Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (112 commits)
  ACPI: fix build warning
  Revert "cpuidle: build fix for non-x86"
  ACPI: update intrd DSDT override console messages
  ACPI: update DSDT override documentation
  ACPI: Add "acpi_no_initrd_override" kernel parameter
  ACPI: its a directory not a folder....
  ACPI: misc cleanups
  ACPI: add missing prink prefix strings
  ACPI: cleanup acpi.h
  ACPICA: fix CONFIG_ACPI_DEBUG_FUNC_TRACE build
  ACPI: video: Ignore ACPI video devices that aren't present in hardware
  ACPI: video: reset brightness on resume
  ACPI: video: call ACPI notifier chain for ACPI video notifications
  ACPI: create notifier chain to get hotkey events to graphics driver
  ACPI: video: delete unused display switch on hotkey event code
  ACPI: video: create "brightness_switch_enabled" modparam
  cpuidle: Add a poll_idle method
  ACPI: cpuidle: Support C1 idle time accounting
  ACPI: enable MWAIT for C1 idle
  ACPI: idle: Fix acpi_safe_halt usages and interrupt enabling/disabling
  ...

95 files changed, 9009 insertions, 2486 deletions

diff --git a/Documentation/00-INDEX b/Documentation/00-INDEX
index d273b557a934..6e9c4050a41b 100644
--- a/Documentation/00-INDEX
+++ b/Documentation/00-INDEX
@@ -14,6 +14,7 @@ Following translations are available on the WWW:
         - this file.
 ABI/
         - info on kernel <-> userspace ABI and relative interface stability.
+
 BUG-HUNTING
         - brute force method of doing binary search of patches to find bug.
 Changes
@@ -66,6 +67,8 @@ VGA-softcursor.txt
         - how to change your VGA cursor from a blinking underscore.
 accounting/
         - documentation on accounting and taskstats.
+acpi/
+        - info on ACPI-specific hooks in the kernel.
 aoe/
         - description of AoE (ATA over Ethernet) along with config examples.
 applying-patches.txt
diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi
new file mode 100644
index 000000000000..9470ed9afcc0
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-acpi
@@ -0,0 +1,99 @@
+What:           /sys/firmware/acpi/interrupts/
+Date:           February 2008
+Contact:        Len Brown <lenb@kernel.org>
+Description:
+                All ACPI interrupts are handled via a single IRQ,
+                the System Control Interrupt (SCI), which appears
+                as "acpi" in /proc/interrupts.
+
+                However, one of the main functions of ACPI is to make
+                the platform understand random hardware without
+                special driver support.  So while the SCI handles a few
+                well known (fixed feature) interrupts sources, such
+                as the power button, it can also handle a variable
+                number of a "General Purpose Events" (GPE).
+
+                A GPE vectors to a specified handler in AML, which
+                can do a anything the BIOS writer wants from
+                OS context.  GPE 0x12, for example, would vector
+                to a level or edge handler called _L12 or _E12.
+                The handler may do its business and return.
+                Or the handler may send send a Notify event
+                to a Linux device driver registered on an ACPI device,
+                such as a battery, or a processor.
+
+                To figure out where all the SCI's are coming from,
+                /sys/firmware/acpi/interrupts contains a file listing
+                every possible source, and the count of how many
+                times it has triggered.
+
+                $ cd /sys/firmware/acpi/interrupts
+                $ grep . *
+                error:0
+                ff_gbl_lock:0
+                ff_pmtimer:0
+                ff_pwr_btn:0
+                ff_rt_clk:0
+                ff_slp_btn:0
+                gpe00:0
+                gpe01:0
+                gpe02:0
+                gpe03:0
+                gpe04:0
+                gpe05:0
+                gpe06:0
+                gpe07:0
+                gpe08:0
+                gpe09:174
+                gpe0A:0
+                gpe0B:0
+                gpe0C:0
+                gpe0D:0
+                gpe0E:0
+                gpe0F:0
+                gpe10:0
+                gpe11:60
+                gpe12:0
+                gpe13:0
+                gpe14:0
+                gpe15:0
+                gpe16:0
+                gpe17:0
+                gpe18:0
+                gpe19:7
+                gpe1A:0
+                gpe1B:0
+                gpe1C:0
+                gpe1D:0
+                gpe1E:0
+                gpe1F:0
+                gpe_all:241
+                sci:241
+
+                sci - The total number of times the ACPI SCI
+                has claimed an interrupt.
+
+                gpe_all - count of SCI caused by GPEs.
+
+                gpeXX - count for individual GPE source
+
+                ff_gbl_lock - Global Lock
+
+                ff_pmtimer - PM Timer
+
+                ff_pwr_btn - Power Button
+
+                ff_rt_clk - Real Time Clock
+
+                ff_slp_btn - Sleep Button
+
+                error - an interrupt that can't be accounted for above.
+
+                Root has permission to clear any of these counters.  Eg.
+                # echo 0 > gpe11
+
+                All counters can be cleared by clearing the total "sci":
+                # echo 0 > sci
+
+                None of these counters has an effect on the function
+                of the system, they are simply statistics.
diff --git a/Documentation/acpi/dsdt-override.txt b/Documentation/acpi/dsdt-override.txt
new file mode 100644
index 000000000000..5008f256a2db
--- /dev/null
+++ b/Documentation/acpi/dsdt-override.txt
@@ -0,0 +1,15 @@
+Linux supports two methods of overriding the BIOS DSDT:
+
+CONFIG_ACPI_CUSTOM_DSDT builds the image into the kernel.
+
+CONFIG_ACPI_CUSTOM_DSDT_INITRD adds the image to the initrd.
+
+When to use these methods is described in detail on the
+Linux/ACPI home page:
+http://www.lesswatts.org/projects/acpi/overridingDSDT.php
+
+Note that if both options are used, the DSDT supplied
+by the INITRD method takes precedence.
+
+Documentation/initramfs-add-dsdt.sh is provided for convenience
+for use with the CONFIG_ACPI_CUSTOM_DSDT_INITRD method.
diff --git a/Documentation/acpi/initramfs-add-dsdt.sh b/Documentation/acpi/initramfs-add-dsdt.sh
new file mode 100755
index 000000000000..17ef6e838e14
--- /dev/null
+++ b/Documentation/acpi/initramfs-add-dsdt.sh
@@ -0,0 +1,43 @@
+#!/bin/bash
+# Adds a DSDT file to the initrd (if it's an initramfs)
+# first argument is the name of archive
+# second argument is the name of the file to add
+# The file will be copied as /DSDT.aml
+
+# 20060126: fix "Premature end of file" with some old cpio (Roland Robic)
+# 20060205: this time it should really work
+
+# check the arguments
+if [ $# -ne 2 ]; then
+        program_name=$(basename $0)
+        echo "\
+$program_name: too few arguments
+Usage: $program_name initrd-name.img DSDT-to-add.aml
+Adds a DSDT file to an initrd (in initramfs format)
+
+  initrd-name.img: filename of the initrd in initramfs format
+  DSDT-to-add.aml: filename of the DSDT file to add
+  " 1>&2
+    exit 1
+fi
+
+# we should check it's an initramfs
+
+tempcpio=$(mktemp -d)
+# cleanup on exit, hangup, interrupt, quit, termination
+trap 'rm -rf $tempcpio' 0 1 2 3 15
+
+# extract the archive
+gunzip -c "$1" > "$tempcpio"/initramfs.cpio || exit 1
+
+# copy the DSDT file at the root of the directory so that we can call it "/DSDT.aml"
+cp -f "$2" "$tempcpio"/DSDT.aml
+
+# add the file
+cd "$tempcpio"
+(echo DSDT.aml | cpio --quiet -H newc -o -A -O "$tempcpio"/initramfs.cpio) || exit 1
+cd "$OLDPWD"
+
+# re-compress the archive
+gzip -c "$tempcpio"/initramfs.cpio > "$1"
+
diff --git a/Documentation/acpi/method-tracing.txt b/Documentation/acpi/method-tracing.txt
new file mode 100644
index 000000000000..f6efb1ea559a
--- /dev/null
+++ b/Documentation/acpi/method-tracing.txt
@@ -0,0 +1,26 @@
+/sys/module/acpi/parameters/:
+
+trace_method_name
+        The AML method name that the user wants to trace
+
+trace_debug_layer
+        The temporary debug_layer used when tracing the method.
+        Using 0xffffffff by default if it is 0.
+
+trace_debug_level
+        The temporary debug_level used when tracing the method.
+        Using 0x00ffffff by default if it is 0.
+
+trace_state
+        The status of the tracing feature.
+
+        "enabled" means this feature is enabled
+        and the AML method is traced every time it's executed.
+
+        "1" means this feature is enabled and the AML method
+        will only be traced during the next execution.
+
+        "disabled" means this feature is disabled.
+        Users can enable/disable this debug tracing feature by
+        "echo string > /sys/module/acpi/parameters/trace_state".
+        "string" should be one of "enable", "disable" and "1".
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 8fd5aa40585f..0dcbd266b442 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -147,8 +147,10 @@ and is between 256 and 4096 characters. It is defined in the file
                         default: 0
 
         acpi_sleep=     [HW,ACPI] Sleep options
-                        Format: { s3_bios, s3_mode }
-                        See Documentation/power/video.txt
+                        Format: { s3_bios, s3_mode, s3_beep }
+                        See Documentation/power/video.txt for s3_bios and s3_mode.
+                        s3_beep is for debugging; it makes the PC's speaker beep
+                        as soon as the kernel's real-mode entry point is called.
 
         acpi_sci=       [HW,ACPI] ACPI System Control Interrupt trigger mode
                         Format: { level | edge | high | low }
@@ -175,6 +177,9 @@ and is between 256 and 4096 characters. It is defined in the file
 
         acpi_no_auto_ssdt       [HW,ACPI] Disable automatic loading of SSDT
 
+        acpi_no_initrd_override [KNL,ACPI]
+                        Disable loading custom ACPI tables from the initramfs
+
         acpi_os_name=   [HW,ACPI] Tell ACPI BIOS the name of the OS
                         Format: To spoof as Windows 98: ="Microsoft Windows"
 
diff --git a/Documentation/power/swsusp.txt b/Documentation/power/swsusp.txt
index aea7e9209667..9d60ab717a7b 100644
--- a/Documentation/power/swsusp.txt
+++ b/Documentation/power/swsusp.txt
@@ -386,6 +386,11 @@ before suspending; then remount them after resuming.
 There is a work-around for this problem.  For more information, see
 Documentation/usb/persist.txt.
 
+Q: Can I suspend-to-disk using a swap partition under LVM?
+
+A: No. You can suspend successfully, but you'll not be able to
+resume. uswsusp should be able to work with LVM. See suspend.sf.net.
+
 Q: I upgraded the kernel from 2.6.15 to 2.6.16. Both kernels were
 compiled with the similar configuration files. Anyway I found that
 suspend to disk (and resume) is much slower on 2.6.16 compared to
diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt
new file mode 100644
index 000000000000..5776e090359d
--- /dev/null
+++ b/Documentation/thermal/sysfs-api.txt
@@ -0,0 +1,246 @@
+Generic Thermal Sysfs driver How To
+=========================
+
+Written by Sujith Thomas <sujith.thomas@intel.com>, Zhang Rui <rui.zhang@intel.com>
+
+Updated: 2 January 2008
+
+Copyright (c)  2008 Intel Corporation
+
+
+0. Introduction
+
+The generic thermal sysfs provides a set of interfaces for thermal zone devices (sensors)
+and thermal cooling devices (fan, processor...) to register with the thermal management
+solution and to be a part of it.
+
+This how-to focusses on enabling new thermal zone and cooling devices to participate
+in thermal management.
+This solution is platform independent and any type of thermal zone devices and
+cooling devices should be able to make use of the infrastructure.
+
+The main task of the thermal sysfs driver is to expose thermal zone attributes as well
+as cooling device attributes to the user space.
+An intelligent thermal management application can make decisions based on inputs
+from thermal zone attributes (the current temperature and trip point temperature)
+and throttle appropriate devices.
+
+[0-*]   denotes any positive number starting from 0
+[1-*]   denotes any positive number starting from 1
+
+1. thermal sysfs driver interface functions
+
+1.1 thermal zone device interface
+1.1.1 struct thermal_zone_device *thermal_zone_device_register(char *name, int trips,
+                                void *devdata, struct thermal_zone_device_ops *ops)
+
+        This interface function adds a new thermal zone device (sensor) to
+        /sys/class/thermal folder as thermal_zone[0-*].
+        It tries to bind all the thermal cooling devices registered at the same time.
+
+        name: the thermal zone name.
+        trips: the total number of trip points this thermal zone supports.
+        devdata: device private data
+        ops: thermal zone device callbacks.
+                .bind: bind the thermal zone device with a thermal cooling device.
+                .unbind: unbing the thermal zone device with a thermal cooling device.
+                .get_temp: get the current temperature of the thermal zone.
+                .get_mode: get the current mode (user/kernel) of the thermal zone.
+                           "kernel" means thermal management is done in kernel.
+                           "user" will prevent kernel thermal driver actions upon trip points
+                           so that user applications can take charge of thermal management.
+                .set_mode: set the mode (user/kernel) of the thermal zone.
+                .get_trip_type: get the type of certain trip point.
+                .get_trip_temp: get the temperature above which the certain trip point
+                                will be fired.
+
+1.1.2 void thermal_zone_device_unregister(struct thermal_zone_device *tz)
+
+        This interface function removes the thermal zone device.
+        It deletes the corresponding entry form /sys/class/thermal folder and unbind all
+        the thermal cooling devices it uses.
+
+1.2 thermal cooling device interface
+1.2.1 struct thermal_cooling_device *thermal_cooling_device_register(char *name,
+                                        void *devdata, struct thermal_cooling_device_ops *)
+
+        This interface function adds a new thermal cooling device (fan/processor/...) to
+        /sys/class/thermal/ folder as cooling_device[0-*].
+        It tries to bind itself to all the thermal zone devices register at the same time.
+        name: the cooling device name.
+        devdata: device private data.
+        ops: thermal cooling devices callbacks.
+                .get_max_state: get the Maximum throttle state of the cooling device.
+                .get_cur_state: get the Current throttle state of the cooling device.
+                .set_cur_state: set the Current throttle state of the cooling device.
+
+1.2.2 void thermal_cooling_device_unregister(struct thermal_cooling_device *cdev)
+
+        This interface function remove the thermal cooling device.
+        It deletes the corresponding entry form /sys/class/thermal folder and unbind
+        itself from all the thermal zone devices using it.
+
+1.3 interface for binding a thermal zone device with a thermal cooling device
+1.3.1 int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
+                        int trip, struct thermal_cooling_device *cdev);
+
+        This interface function bind a thermal cooling device to the certain trip point
+        of a thermal zone device.
+        This function is usually called in the thermal zone device .bind callback.
+        tz: the thermal zone device
+        cdev: thermal cooling device
+        trip: indicates which trip point the cooling devices is associated with
+                 in this thermal zone.
+
+1.3.2 int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
+                                int trip, struct thermal_cooling_device *cdev);
+
+        This interface function unbind a thermal cooling device from the certain trip point
+        of a thermal zone device.
+        This function is usually called in the thermal zone device .unbind callback.
+        tz: the thermal zone device
+        cdev: thermal cooling device
+        trip: indicates which trip point the cooling devices is associated with
+                in this thermal zone.
+
+2. sysfs attributes structure
+
+RO      read only value
+RW      read/write value
+
+All thermal sysfs attributes will be represented under /sys/class/thermal
+/sys/class/thermal/
+
+Thermal zone device sys I/F, created once it's registered:
+|thermal_zone[0-*]:
+        |-----type:                     Type of the thermal zone
+        |-----temp:                     Current temperature
+        |-----mode:                     Working mode of the thermal zone
+        |-----trip_point_[0-*]_temp:    Trip point temperature
+        |-----trip_point_[0-*]_type:    Trip point type
+
+Thermal cooling device sys I/F, created once it's registered:
+|cooling_device[0-*]:
+        |-----type :                    Type of the cooling device(processor/fan/...)
+        |-----max_state:                Maximum cooling state of the cooling device
+        |-----cur_state:                Current cooling state of the cooling device
+
+
+These two dynamic attributes are created/removed in pairs.
+They represent the relationship between a thermal zone and its associated cooling device.
+They are created/removed for each
+thermal_zone_bind_cooling_device/thermal_zone_unbind_cooling_device successful exection.
+
+|thermal_zone[0-*]
+        |-----cdev[0-*]:                The [0-*]th cooling device in the current thermal zone
+        |-----cdev[0-*]_trip_point:     Trip point that cdev[0-*] is associated with
+
+
+***************************
+* Thermal zone attributes *
+***************************
+
+type                            Strings which represent the thermal zone type.
+                                This is given by thermal zone driver as part of registration.
+                                Eg: "ACPI thermal zone" indicates it's a ACPI thermal device
+                                RO
+                                Optional
+
+temp                            Current temperature as reported by thermal zone (sensor)
+                                Unit: degree celsius
+                                RO
+                                Required
+
+mode                            One of the predifned values in [kernel, user]
+                                This file gives information about the algorithm
+                                that is currently managing the thermal zone.
+                                It can be either default kernel based algorithm
+                                or user space application.
+                                RW
+                                Optional
+                                kernel  = Thermal management in kernel thermal zone driver.
+                                user    = Preventing kernel thermal zone driver actions upon
+                                          trip points so that user application can take full
+                                          charge of the thermal management.
+
+trip_point_[0-*]_temp           The temperature above which trip point will be fired
+                                Unit: degree celsius
+                                RO
+                                Optional
+
+trip_point_[0-*]_type           Strings which indicate the type of the trip point
+                                Eg. it can be one of critical, hot, passive,
+                                    active[0-*] for ACPI thermal zone.
+                                RO
+                                Optional
+
+cdev[0-*]                       Sysfs link to the thermal cooling device node where the sys I/F
+                                for cooling device throttling control represents.
+                                RO
+                                Optional
+
+cdev[0-*]_trip_point            The trip point with which cdev[0-*] is assocated in this thermal zone
+                                -1 means the cooling device is not associated with any trip point.
+                                RO
+                                Optional
+
+******************************
+* Cooling device  attributes *
+******************************
+
+type                            String which represents the type of device
+                                eg: For generic ACPI: this should be "Fan",
+                                "Processor" or "LCD"
+                                eg. For memory controller device on intel_menlow platform:
+                                this should be "Memory controller"
+                                RO
+                                Optional
+
+max_state                       The maximum permissible cooling state of this cooling device.
+                                RO
+                                Required
+
+cur_state                       The current cooling state of this cooling device.
+                                the value can any integer numbers between 0 and max_state,
+                                cur_state == 0 means no cooling
+                                cur_state == max_state means the maximum cooling.
+                                RW
+                                Required
+
+3. A simple implementation
+
+ACPI thermal zone may support multiple trip points like critical/hot/passive/active.
+If an ACPI thermal zone supports critical, passive, active[0] and active[1] at the same time,
+it may register itself as a thermale_zone_device (thermal_zone1) with 4 trip points in all.
+It has one processor and one fan, which are both registered as thermal_cooling_device.
+If the processor is listed in _PSL method, and the fan is listed in _AL0 method,
+the sys I/F structure will be built like this:
+
+/sys/class/thermal:
+
+|thermal_zone1:
+        |-----type:                     ACPI thermal zone
+        |-----temp:                     37
+        |-----mode:                     kernel
+        |-----trip_point_0_temp:        100
+        |-----trip_point_0_type:        critical
+        |-----trip_point_1_temp:        80
+        |-----trip_point_1_type:        passive
+        |-----trip_point_2_temp:        70
+        |-----trip_point_2_type:        active[0]
+        |-----trip_point_3_temp:        60
+        |-----trip_point_3_type:        active[1]
+        |-----cdev0:                    --->/sys/class/thermal/cooling_device0
+        |-----cdev0_trip_point:         1       /* cdev0 can be used for passive */
+        |-----cdev1:                    --->/sys/class/thermal/cooling_device3
+        |-----cdev1_trip_point:         2       /* cdev1 can be used for active[0]*/
+
+|cooling_device0:
+        |-----type:                     Processor
+        |-----max_state:                8
+        |-----cur_state:                0
+
+|cooling_device3:
+        |-----type:                     Fan
+        |-----max_state:                2
+        |-----cur_state:                0
diff --git a/Documentation/thinkpad-acpi.txt b/Documentation/thinkpad-acpi.txt
index 10c041ca13c7..6c2477754a2a 100644
--- a/Documentation/thinkpad-acpi.txt
+++ b/Documentation/thinkpad-acpi.txt
@@ -1,7 +1,7 @@
                      ThinkPad ACPI Extras Driver
 
-                            Version 0.17
-                         October 04th, 2007
+                            Version 0.19
+                         January 06th, 2008
 
                Borislav Deianov <borislav@users.sf.net>
              Henrique de Moraes Holschuh <hmh@hmh.eng.br>
@@ -215,6 +215,11 @@ The following commands can be written to the /proc/acpi/ibm/hotkey file:
         ... any other 8-hex-digit mask ...
         echo reset > /proc/acpi/ibm/hotkey -- restore the original mask
 
+The procfs interface does not support NVRAM polling control.  So as to
+maintain maximum bug-to-bug compatibility, it does not report any masks,
+nor does it allow one to manipulate the hot key mask when the firmware
+does not support masks at all, even if NVRAM polling is in use.
+
 sysfs notes:
 
         hotkey_bios_enabled:
@@ -231,17 +236,26 @@ sysfs notes:
                 to this value.
 
         hotkey_enable:
-                Enables/disables the hot keys feature, and reports
-                current status of the hot keys feature.
+                Enables/disables the hot keys feature in the ACPI
+                firmware, and reports current status of the hot keys
+                feature.  Has no effect on the NVRAM hot key polling
+                functionality.
 
                 0: disables the hot keys feature / feature disabled
                 1: enables the hot keys feature / feature enabled
 
         hotkey_mask:
-                bit mask to enable driver-handling and ACPI event
-                generation for each hot key (see above).  Returns the
-                current status of the hot keys mask, and allows one to
-                modify it.
+                bit mask to enable driver-handling (and depending on
+                the firmware, ACPI event generation) for each hot key
+                (see above).  Returns the current status of the hot keys
+                mask, and allows one to modify it.
+
+                Note: when NVRAM polling is active, the firmware mask
+                will be different from the value returned by
+                hotkey_mask.  The driver will retain enabled bits for
+                hotkeys that are under NVRAM polling even if the
+                firmware refuses them, and will not set these bits on
+                the firmware hot key mask.
 
         hotkey_all_mask:
                 bit mask that should enable event reporting for all
@@ -257,12 +271,48 @@ sysfs notes:
                 handled by the firmware anyway.  Echo it to
                 hotkey_mask above, to use.
 
+        hotkey_source_mask:
+                bit mask that selects which hot keys will the driver
+                poll the NVRAM for.  This is auto-detected by the driver
+                based on the capabilities reported by the ACPI firmware,
+                but it can be overridden at runtime.
+
+                Hot keys whose bits are set in both hotkey_source_mask
+                and also on hotkey_mask are polled for in NVRAM.  Only a
+                few hot keys are available through CMOS NVRAM polling.
+
+                Warning: when in NVRAM mode, the volume up/down/mute
+                keys are synthesized according to changes in the mixer,
+                so you have to use volume up or volume down to unmute,
+                as per the ThinkPad volume mixer user interface.  When
+                in ACPI event mode, volume up/down/mute are reported as
+                separate events, but this behaviour may be corrected in
+                future releases of this driver, in which case the
+                ThinkPad volume mixer user interface semanthics will be
+                enforced.
+
+        hotkey_poll_freq:
+                frequency in Hz for hot key polling. It must be between
+                0 and 25 Hz.  Polling is only carried out when strictly
+                needed.
+
+                Setting hotkey_poll_freq to zero disables polling, and
+                will cause hot key presses that require NVRAM polling
+                to never be reported.
+
+                Setting hotkey_poll_freq too low will cause repeated
+                pressings of the same hot key to be misreported as a
+                single key press, or to not even be detected at all.
+                The recommended polling frequency is 10Hz.
+
         hotkey_radio_sw:
                 if the ThinkPad has a hardware radio switch, this
                 attribute will read 0 if the switch is in the "radios
                 disabled" postition, and 1 if the switch is in the
                 "radios enabled" position.
 
+                This attribute has poll()/select() support.
+
         hotkey_report_mode:
                 Returns the state of the procfs ACPI event report mode
                 filter for hot keys.  If it is set to 1 (the default),
@@ -277,6 +327,25 @@ sysfs notes:
                 May return -EPERM (write access locked out by module
                 parameter) or -EACCES (read-only).
 
+        wakeup_reason:
+                Set to 1 if the system is waking up because the user
+                requested a bay ejection.  Set to 2 if the system is
+                waking up because the user requested the system to
+                undock.  Set to zero for normal wake-ups or wake-ups
+                due to unknown reasons.
+
+                This attribute has poll()/select() support.
+
+        wakeup_hotunplug_complete:
+                Set to 1 if the system was waken up because of an
+                undock or bay ejection request, and that request
+                was sucessfully completed.  At this point, it might
+                be useful to send the system back to sleep, at the
+                user's choice.  Refer to HKEY events 0x4003 and
+                0x3003, below.
+
+                This attribute has poll()/select() support.
+
 input layer notes:
 
 A Hot key is mapped to a single input layer EV_KEY event, possibly
@@ -427,6 +496,23 @@ Non hot-key ACPI HKEY event map:
 The above events are not propagated by the driver, except for legacy
 compatibility purposes when hotkey_report_mode is set to 1.
 
+0x2304          System is waking up from suspend to undock
+0x2305          System is waking up from suspend to eject bay
+0x2404          System is waking up from hibernation to undock
+0x2405          System is waking up from hibernation to eject bay
+
+The above events are never propagated by the driver.
+
+0x3003          Bay ejection (see 0x2x05) complete, can sleep again
+0x4003          Undocked (see 0x2x04), can sleep again
+0x5009          Tablet swivel: switched to tablet mode
+0x500A          Tablet swivel: switched to normal mode
+0x500B          Tablet pen insterted into its storage bay
+0x500C          Tablet pen removed from its storage bay
+0x5010          Brightness level changed (newer Lenovo BIOSes)
+
+The above events are propagated by the driver.
+
 Compatibility notes:
 
 ibm-acpi and thinkpad-acpi 0.15 (mainline kernels before 2.6.23) never
@@ -1263,3 +1349,17 @@ Sysfs interface changelog:
                 and the hwmon class for libsensors4 (lm-sensors 3)
                 compatibility.  Moved all hwmon attributes to this
                 new platform device.
+
+0x020100:       Marker for thinkpad-acpi with hot key NVRAM polling
+                support.  If you must, use it to know you should not
+                start an userspace NVRAM poller (allows to detect when
+                NVRAM is compiled out by the user because it is
+                unneeded/undesired in the first place).
+0x020101:       Marker for thinkpad-acpi with hot key NVRAM polling
+                and proper hotkey_mask semanthics (version 8 of the
+                NVRAM polling patch).  Some development snapshots of
+                0.18 had an earlier version that did strange things
+                to hotkey_mask.
+
+0x020200:       Add poll()/select() support to the following attributes:
+                hotkey_radio_sw, wakeup_hotunplug_complete, wakeup_reason
diff --git a/MAINTAINERS b/MAINTAINERS
index a372c86fd07b..aefd23f892ba 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -202,6 +202,13 @@ L:	linux-scsi@vger.kernel.org
 W:      http://www.adaptec.com/
 S:      Supported
 
+ACER WMI LAPTOP EXTRAS
+P:      Carlos Corbacho
+M:      carlos@strangeworlds.co.uk
+L:      aceracpi@googlegroups.com (subscribers-only)
+W:      http://code.google.com/p/aceracpi
+S:      Maintained
+
 ACPI
 P:      Len Brown
 M:      len.brown@intel.com
@@ -252,6 +259,13 @@ L:	linux-acpi@vger.kernel.org
 W:      http://acpi.sourceforge.net/
 S:      Supported
 
+ACPI WMI DRIVER
+P:      Carlos Corbacho
+M:      carlos@strangeworlds.co.uk
+L:      linux-acpi@vger.kernel.org
+W:      http://www.lesswatts.org/projects/acpi/
+S:      Maintained
+
 ADM1025 HARDWARE MONITOR DRIVER
 P:      Jean Delvare
 M:      khali@linux-fr.org
@@ -1790,6 +1804,11 @@ P:	Jaroslav Kysela
 M:      perex@perex.cz
 S:      Maintained
 
+HP COMPAQ TC1100 TABLET WMI EXTRAS DRIVER
+P:      Carlos Corbacho
+M:      carlos@strangeworlds.co.uk
+S:      Odd Fixes
+
 HPET:   High Precision Event Timers driver (hpet.c)
 P:      Clemens Ladisch
 M:      clemens@ladisch.de
diff --git a/arch/ia64/kernel/acpi-processor.c b/arch/ia64/kernel/acpi-processor.c
index 5a216c019924..cbe6cee5a550 100644
--- a/arch/ia64/kernel/acpi-processor.c
+++ b/arch/ia64/kernel/acpi-processor.c
@@ -45,6 +45,12 @@ static void init_intel_pdc(struct acpi_processor *pr)
         buf[0] = ACPI_PDC_REVISION_ID;
         buf[1] = 1;
         buf[2] = ACPI_PDC_EST_CAPABILITY_SMP;
+        /*
+         * The default of PDC_SMP_T_SWCOORD bit is set for IA64 cpu so
+         * that OSPM is capable of native ACPI throttling software
+         * coordination using BIOS supplied _TSD info.
+         */
+        buf[2] |= ACPI_PDC_SMP_T_SWCOORD;
 
         obj->type = ACPI_TYPE_BUFFER;
         obj->buffer.length = 12;
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 00b5d08f6da8..78f28d825f30 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -69,6 +69,20 @@ unsigned int acpi_cpei_phys_cpuid;
 
 unsigned long acpi_wakeup_address = 0;
 
+#ifdef CONFIG_IA64_GENERIC
+static unsigned long __init acpi_find_rsdp(void)
+{
+        unsigned long rsdp_phys = 0;
+
+        if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
+                rsdp_phys = efi.acpi20;
+        else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
+                printk(KERN_WARNING PREFIX
+                       "v1.0/r0.71 tables no longer supported\n");
+        return rsdp_phys;
+}
+#endif
+
 const char __init *
 acpi_get_sysname(void)
 {
@@ -152,7 +166,7 @@ int acpi_request_vector(u32 int_type)
         return vector;
 }
 
-char *__acpi_map_table(unsigned long phys_addr, unsigned long size)
+char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size)
 {
         return __va(phys_addr);
 }
@@ -601,8 +615,6 @@ int acpi_register_gsi(u32 gsi, int triggering, int polarity)
                                      IOSAPIC_LEVEL);
 }
 
-EXPORT_SYMBOL(acpi_register_gsi);
-
 void acpi_unregister_gsi(u32 gsi)
 {
         if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
@@ -611,8 +623,6 @@ void acpi_unregister_gsi(u32 gsi)
         iosapic_unregister_intr(gsi);
 }
 
-EXPORT_SYMBOL(acpi_unregister_gsi);
-
 static int __init acpi_parse_fadt(struct acpi_table_header *table)
 {
         struct acpi_table_header *fadt_header;
@@ -631,18 +641,6 @@ static int __init acpi_parse_fadt(struct acpi_table_header *table)
         return 0;
 }
 
-unsigned long __init acpi_find_rsdp(void)
-{
-        unsigned long rsdp_phys = 0;
-
-        if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
-                rsdp_phys = efi.acpi20;
-        else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
-                printk(KERN_WARNING PREFIX
-                       "v1.0/r0.71 tables no longer supported\n");
-        return rsdp_phys;
-}
-
 int __init acpi_boot_init(void)
 {
 
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 923c3babd667..c95482b6b6dd 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -105,6 +105,9 @@ config GENERIC_TIME_VSYSCALL
         bool
         default X86_64
 
+config ARCH_HAS_CPU_RELAX
+        def_bool y
+
 config HAVE_SETUP_PER_CPU_AREA
         def_bool X86_64
 
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index d2a58431a074..680b7300a489 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -78,7 +78,6 @@ int acpi_ht __initdata = 1;	/* enable HT */
 int acpi_lapic;
 int acpi_ioapic;
 int acpi_strict;
-EXPORT_SYMBOL(acpi_strict);
 
 u8 acpi_sci_flags __initdata;
 int acpi_sci_override_gsi __initdata;
@@ -106,7 +105,7 @@ enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
 #ifdef  CONFIG_X86_64
 
 /* rely on all ACPI tables being in the direct mapping */
-char *__acpi_map_table(unsigned long phys_addr, unsigned long size)
+char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size)
 {
         if (!phys_addr || !size)
                 return NULL;
@@ -131,7 +130,7 @@ char *__acpi_map_table(unsigned long phys_addr, unsigned long size)
  * from the fixed base.  That's why we start at FIX_IO_APIC_BASE_END and
  * count idx down while incrementing the phys address.
  */
-char *__acpi_map_table(unsigned long phys, unsigned long size)
+char *__init __acpi_map_table(unsigned long phys, unsigned long size)
 {
         unsigned long base, offset, mapped_size;
         int idx;
@@ -490,8 +489,6 @@ int acpi_register_gsi(u32 gsi, int triggering, int polarity)
         return irq;
 }
 
-EXPORT_SYMBOL(acpi_register_gsi);
-
 /*
  *  ACPI based hotplug support for CPU
  */
@@ -587,25 +584,6 @@ int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
 
 EXPORT_SYMBOL(acpi_unregister_ioapic);
 
-static unsigned long __init
-acpi_scan_rsdp(unsigned long start, unsigned long length)
-{
-        unsigned long offset = 0;
-        unsigned long sig_len = sizeof("RSD PTR ") - 1;
-
-        /*
-         * Scan all 16-byte boundaries of the physical memory region for the
-         * RSDP signature.
-         */
-        for (offset = 0; offset < length; offset += 16) {
-                if (strncmp((char *)(phys_to_virt(start) + offset), "RSD PTR ", sig_len))
-                        continue;
-                return (start + offset);
-        }
-
-        return 0;
-}
-
 static int __init acpi_parse_sbf(struct acpi_table_header *table)
 {
         struct acpi_table_boot *sb;
@@ -748,27 +726,6 @@ static int __init acpi_parse_fadt(struct acpi_table_header *table)
         return 0;
 }
 
-unsigned long __init acpi_find_rsdp(void)
-{
-        unsigned long rsdp_phys = 0;
-
-        if (efi_enabled) {
-                if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
-                        return efi.acpi20;
-                else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
-                        return efi.acpi;
-        }
-        /*
-         * Scan memory looking for the RSDP signature. First search EBDA (low
-         * memory) paragraphs and then search upper memory (E0000-FFFFF).
-         */
-        rsdp_phys = acpi_scan_rsdp(0, 0x400);
-        if (!rsdp_phys)
-                rsdp_phys = acpi_scan_rsdp(0xE0000, 0x20000);
-
-        return rsdp_phys;
-}
-
 #ifdef  CONFIG_X86_LOCAL_APIC
 /*
  * Parse LAPIC entries in MADT
diff --git a/arch/x86/kernel/acpi/processor.c b/arch/x86/kernel/acpi/processor.c
index a25db514c719..324eb0cab19c 100644
--- a/arch/x86/kernel/acpi/processor.c
+++ b/arch/x86/kernel/acpi/processor.c
@@ -46,6 +46,12 @@ static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c)
         buf[1] = 1;
         buf[2] = ACPI_PDC_C_CAPABILITY_SMP;
 
+        /*
+         * The default of PDC_SMP_T_SWCOORD bit is set for intel x86 cpu so
+         * that OSPM is capable of native ACPI throttling software
+         * coordination using BIOS supplied _TSD info.
+         */
+        buf[2] |= ACPI_PDC_SMP_T_SWCOORD;
         if (cpu_has(c, X86_FEATURE_EST))
                 buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
 
diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c b/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
index 76c3ab0da468..98d4fdb7dc04 100644
--- a/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
+++ b/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
@@ -189,10 +189,7 @@ static unsigned int pentium4_get_frequency(void)
                 printk(KERN_DEBUG "speedstep-lib: couldn't detect FSB speed. Please send an e-mail to <linux@brodo.de>\n");
 
         /* Multiplier. */
-        if (c->x86_model < 2)
-                mult = msr_lo >> 27;
-        else
-                mult = msr_lo >> 24;
+        mult = msr_lo >> 24;
 
         dprintk("P4 - FSB %u kHz; Multiplier %u; Speed %u kHz\n", fsb, mult, (fsb * mult));
 
diff --git a/arch/x86/kernel/srat_32.c b/arch/x86/kernel/srat_32.c
index 2bf6903cb444..b72e61359c36 100644
--- a/arch/x86/kernel/srat_32.c
+++ b/arch/x86/kernel/srat_32.c
@@ -274,7 +274,7 @@ int __init get_memcfg_from_srat(void)
         int tables = 0;
         int i = 0;
 
-        rsdp_address = acpi_find_rsdp();
+        rsdp_address = acpi_os_get_root_pointer();
         if (!rsdp_address) {
                 printk("%s: System description tables not found\n",
                        __FUNCTION__);
diff --git a/drivers/Kconfig b/drivers/Kconfig
index d74d9fbb9fd2..b86877bdc7ac 100644
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -60,6 +60,8 @@ source "drivers/power/Kconfig"
 
 source "drivers/hwmon/Kconfig"
 
+source "drivers/thermal/Kconfig"
+
 source "drivers/watchdog/Kconfig"
 
 source "drivers/ssb/Kconfig"
diff --git a/drivers/Makefile b/drivers/Makefile
index f1c11db52a57..30ba97ec5eb5 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -65,6 +65,7 @@ obj-y				+= i2c/
 obj-$(CONFIG_W1)                += w1/
 obj-$(CONFIG_POWER_SUPPLY)      += power/
 obj-$(CONFIG_HWMON)             += hwmon/
+obj-$(CONFIG_THERMAL)           += thermal/
 obj-$(CONFIG_WATCHDOG)          += watchdog/
 obj-$(CONFIG_PHONE)             += telephony/
 obj-$(CONFIG_MD)                += md/
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index ccf6ea95f68c..7ef172c2a1d6 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -68,26 +68,28 @@ config ACPI_PROCFS
 
           Say N to delete /proc/acpi/ files that have moved to /sys/
 config ACPI_PROCFS_POWER
-        bool "Deprecated power /proc/acpi folders"
+        bool "Deprecated power /proc/acpi directories"
         depends on PROC_FS
         default y
         ---help---
           For backwards compatibility, this option allows
-          deprecated power /proc/acpi/ folders to exist, even when
+          deprecated power /proc/acpi/ directories to exist, even when
           they have been replaced by functions in /sys.
-          The deprecated folders (and their replacements) include:
+          The deprecated directories (and their replacements) include:
           /proc/acpi/battery/* (/sys/class/power_supply/*)
           /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
-          This option has no effect on /proc/acpi/ folders
+          This option has no effect on /proc/acpi/ directories
           and functions, which do not yet exist in /sys
 
-          Say N to delete power /proc/acpi/ folders that have moved to /sys/
+          Say N to delete power /proc/acpi/ directories that have moved to /sys/
+
 config ACPI_SYSFS_POWER
         bool "Future power /sys interface"
         select POWER_SUPPLY
         default y
         ---help---
           Say N to disable power /sys interface
+
 config ACPI_PROC_EVENT
         bool "Deprecated /proc/acpi/event support"
         depends on PROC_FS
@@ -186,6 +188,7 @@ config ACPI_HOTPLUG_CPU
 config ACPI_THERMAL
         tristate "Thermal Zone"
         depends on ACPI_PROCESSOR
+        select THERMAL
         default y
         help
           This driver adds support for ACPI thermal zones.  Most mobile and
@@ -199,6 +202,16 @@ config ACPI_NUMA
         depends on (X86 || IA64)
         default y if IA64_GENERIC || IA64_SGI_SN2
 
+config ACPI_WMI
+        tristate "WMI (EXPERIMENTAL)"
+        depends on EXPERIMENTAL
+        help
+          This driver adds support for the ACPI-WMI mapper device (PNP0C14)
+          found on some systems.
+
+          NOTE: You will need another driver or userspace application on top of
+          this to actually use anything defined in the ACPI-WMI mapper.
+
 config ACPI_ASUS
         tristate "ASUS/Medion Laptop Extras"
         depends on X86
@@ -263,8 +276,10 @@ config ACPI_CUSTOM_DSDT
         depends on !STANDALONE
         default n 
         help
-          This option is to load a custom ACPI DSDT
-          If you don't know what that is, say N.
+          This option supports a custom DSDT by linking it into the kernel.
+          See Documentation/acpi/dsdt-override.txt
+
+          If unsure, say N.
 
 config ACPI_CUSTOM_DSDT_FILE
         string "Custom DSDT Table file to include"
@@ -274,6 +289,17 @@ config ACPI_CUSTOM_DSDT_FILE
           Enter the full path name to the file which includes the AmlCode
           declaration.
 
+config ACPI_CUSTOM_DSDT_INITRD
+        bool "Read Custom DSDT from initramfs"
+        depends on BLK_DEV_INITRD
+        default n
+        help
+          This option supports a custom DSDT by optionally loading it from initrd.
+          See Documentation/acpi/dsdt-override.txt
+
+          If you are not using this feature now, but may use it later,
+          it is safe to say Y here.
+
 config ACPI_BLACKLIST_YEAR
         int "Disable ACPI for systems before Jan 1st this year" if X86_32
         default 0
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 456446f90077..f29812a86533 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -55,6 +55,7 @@ obj-$(CONFIG_ACPI_THERMAL)	+= thermal.o
 obj-$(CONFIG_ACPI_SYSTEM)       += system.o event.o
 obj-$(CONFIG_ACPI_DEBUG)        += debug.o
 obj-$(CONFIG_ACPI_NUMA)         += numa.o
+obj-$(CONFIG_ACPI_WMI)          += wmi.o
 obj-$(CONFIG_ACPI_ASUS)         += asus_acpi.o
 obj-$(CONFIG_ACPI_TOSHIBA)      += toshiba_acpi.o
 obj-$(CONFIG_ACPI_HOTPLUG_MEMORY)       += acpi_memhotplug.o
diff --git a/drivers/acpi/asus_acpi.c b/drivers/acpi/asus_acpi.c
index d915fec9bf63..d25ef961415c 100644
--- a/drivers/acpi/asus_acpi.c
+++ b/drivers/acpi/asus_acpi.c
@@ -142,6 +142,7 @@ struct asus_hotk {
                 xxN,            //M2400N, M3700N, M5200N, M6800N, S1300N, S5200N
                 A4S,            //Z81sp
                 //(Centrino)
+                F3Sa,
                 END_MODEL
         } model;                //Models currently supported
         u16 event_count[128];   //count for each event TODO make this better
@@ -405,7 +406,20 @@ static struct model_data model_conf[END_MODEL] = {
                 .brightness_get    = "GPLV",
                 .mt_bt_switch      = "BLED",
                 .mt_wled           = "WLED"
-        }
+        },
+
+        {
+                .name           = "F3Sa",
+                .mt_bt_switch   = "BLED",
+                .mt_wled        = "WLED",
+                .mt_mled        = "MLED",
+                .brightness_get = "GPLV",
+                .brightness_set = "SPLV",
+                .mt_lcd_switch  = "\\_SB.PCI0.SBRG.EC0._Q10",
+                .lcd_status     = "\\_SB.PCI0.SBRG.EC0.RPIN",
+                .display_get    = "\\ADVG",
+                .display_set    = "SDSP",
+        },
 
 };
 
@@ -710,15 +724,8 @@ static int get_lcd_state(void)
 {
         int lcd = 0;
 
-        if (hotk->model != L3H) {
-                /* We don't have to check anything if we are here */
-                if (!read_acpi_int(NULL, hotk->methods->lcd_status, &lcd))
-                        printk(KERN_WARNING
-                               "Asus ACPI: Error reading LCD status\n");
-
-                if (hotk->model == L2D)
-                        lcd = ~lcd;
-        } else {                /* L3H and the like have to be handled differently */
+        if (hotk->model == L3H) {
+                /* L3H and the like have to be handled differently */
                 acpi_status status = 0;
                 struct acpi_object_list input;
                 union acpi_object mt_params[2];
@@ -745,6 +752,32 @@ static int get_lcd_state(void)
                 if (out_obj.type == ACPI_TYPE_INTEGER)
                         /* That's what the AML code does */
                         lcd = out_obj.integer.value >> 8;
+        } else if (hotk->model == F3Sa) {
+                unsigned long tmp;
+                union acpi_object param;
+                struct acpi_object_list input;
+                acpi_status status;
+
+                /* Read pin 11 */
+                param.type = ACPI_TYPE_INTEGER;
+                param.integer.value = 0x11;
+                input.count = 1;
+                input.pointer = &param;
+
+                status = acpi_evaluate_integer(NULL, hotk->methods->lcd_status,
+                                                &input, &tmp);
+                if (status != AE_OK)
+                        return -1;
+
+                lcd = tmp;
+        } else {
+                /* We don't have to check anything if we are here */
+                if (!read_acpi_int(NULL, hotk->methods->lcd_status, &lcd))
+                        printk(KERN_WARNING
+                               "Asus ACPI: Error reading LCD status\n");
+
+                if (hotk->model == L2D)
+                        lcd = ~lcd;
         }
 
         return (lcd & 1);
@@ -1134,6 +1167,8 @@ static int asus_model_match(char *model)
                 return W5A;
         else if (strncmp(model, "A4S", 3) == 0)
                 return A4S;
+        else if (strncmp(model, "F3Sa", 4) == 0)
+                return F3Sa;
         else
                 return END_MODEL;
 }
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index c4a769d1ba85..f6215e809808 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -194,6 +194,9 @@ static int acpi_battery_get_property(struct power_supply *psy,
         case POWER_SUPPLY_PROP_MANUFACTURER:
                 val->strval = battery->oem_info;
                 break;
+        case POWER_SUPPLY_PROP_SERIAL_NUMBER:
+                val->strval = battery->serial_number;
+                break;
         default:
                 return -EINVAL;
         }
@@ -212,6 +215,7 @@ static enum power_supply_property charge_battery_props[] = {
         POWER_SUPPLY_PROP_CHARGE_NOW,
         POWER_SUPPLY_PROP_MODEL_NAME,
         POWER_SUPPLY_PROP_MANUFACTURER,
+        POWER_SUPPLY_PROP_SERIAL_NUMBER,
 };
 
 static enum power_supply_property energy_battery_props[] = {
@@ -226,6 +230,7 @@ static enum power_supply_property energy_battery_props[] = {
         POWER_SUPPLY_PROP_ENERGY_NOW,
         POWER_SUPPLY_PROP_MODEL_NAME,
         POWER_SUPPLY_PROP_MANUFACTURER,
+        POWER_SUPPLY_PROP_SERIAL_NUMBER,
 };
 #endif
 
diff --git a/drivers/acpi/bay.c b/drivers/acpi/bay.c
index 6daf6088ac88..1fa86811b8ee 100644
--- a/drivers/acpi/bay.c
+++ b/drivers/acpi/bay.c
@@ -46,6 +46,12 @@ MODULE_LICENSE("GPL");
         printk(KERN_DEBUG PREFIX "%s: %s\n", prefix, s); }
 static void bay_notify(acpi_handle handle, u32 event, void *data);
 
+static const struct acpi_device_id bay_device_ids[] = {
+        {"LNXIOBAY", 0},
+        {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, bay_device_ids);
+
 struct bay {
         acpi_handle handle;
         char *name;
@@ -128,7 +134,7 @@ static ssize_t show_present(struct device *dev,
         return snprintf(buf, PAGE_SIZE, "%d\n", bay_present(bay));
 
 }
-DEVICE_ATTR(present, S_IRUGO, show_present, NULL);
+static DEVICE_ATTR(present, S_IRUGO, show_present, NULL);
 
 /*
  * write_eject - write method for "eject" file in sysfs
@@ -144,7 +150,7 @@ static ssize_t write_eject(struct device *dev, struct device_attribute *attr,
         eject_device(bay->handle);
         return count;
 }
-DEVICE_ATTR(eject, S_IWUSR, NULL, write_eject);
+static DEVICE_ATTR(eject, S_IWUSR, NULL, write_eject);
 
 /**
  * is_ata - see if a device is an ata device
diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
index 8809654d6cc9..6dbaa2d15fe0 100644
--- a/drivers/acpi/blacklist.c
+++ b/drivers/acpi/blacklist.c
@@ -70,8 +70,6 @@ static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
         /* IBM 600E - _ADR should return 7, but it returns 1 */
         {"IBM   ", "TP600E  ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
          "Incorrect _ADR", 1},
-        {"ASUS\0\0", "P2B-S   ", 0, ACPI_SIG_DSDT, all_versions,
-         "Bogus PCI routing", 1},
 
         {""}
 };
@@ -208,33 +206,35 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
          * Disable OSI(Linux) warnings on all "Acer, inc."
          *
          * _OSI(Linux) disables the latest Windows BIOS code:
+         * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
          * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5050"),
+         * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
          * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5580"),
          * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 3010"),
          * _OSI(Linux) effect unknown:
          * DMI_MATCH(DMI_PRODUCT_NAME, "Ferrari 5000"),
          */
-        {
-        .callback = dmi_disable_osi_linux,
-        .ident = "Acer, inc.",
-        .matches = {
-                     DMI_MATCH(DMI_SYS_VENDOR, "Acer, inc."),
-                },
-        },
+        /*
+         * note that dmi_check_system() uses strstr()
+         * to match sub-strings rather than !strcmp(),
+         * so "Acer" below matches "Acer, inc." above.
+         */
         /*
          * Disable OSI(Linux) warnings on all "Acer"
          *
          * _OSI(Linux) effect unknown:
-         * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
          * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
          * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720Z"),
          * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5520"),
          * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 6460"),
          * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 7510"),
          * DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5220"),
+         *
+         * _OSI(Linux) is a NOP:
+         * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"),
          */
         {
-        .callback = dmi_unknown_osi_linux,
+        .callback = dmi_disable_osi_linux,
         .ident = "Acer",
         .matches = {
                      DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
@@ -242,21 +242,22 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
         },
         /*
          * Disable OSI(Linux) warnings on all "Apple Computer, Inc."
+         * Disable OSI(Linux) warnings on all "Apple Inc."
          *
          * _OSI(Linux) confirmed to be a NOP:
          * DMI_MATCH(DMI_PRODUCT_NAME, "MacBook1,1"),
          * DMI_MATCH(DMI_PRODUCT_NAME, "MacBook2,1"),
          * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,2"),
+         * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,1"),
          * _OSI(Linux) effect unknown:
          * DMI_MATCH(DMI_PRODUCT_NAME, "MacPro2,1"),
          * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,1"),
-         * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,1"),
          */
         {
         .callback = dmi_disable_osi_linux,
         .ident = "Apple",
         .matches = {
-                     DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
+                     DMI_MATCH(DMI_SYS_VENDOR, "Apple"),
                 },
         },
         /*
@@ -294,13 +295,13 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
          * DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
          */
         {
-        .callback = dmi_unknown_osi_linux,
+        .callback = dmi_disable_osi_linux,
         .ident = "Compal",
         .matches = {
                      DMI_MATCH(DMI_BIOS_VENDOR, "COMPAL"),
                 },
         },
-        { /* OSI(Linux) touches USB, breaks suspend to disk */
+        { /* OSI(Linux) touches USB, unknown side-effect */
         .callback = dmi_disable_osi_linux,
         .ident = "Dell Dimension 5150",
         .matches = {
@@ -310,7 +311,7 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
         },
         { /* OSI(Linux) is a NOP */
         .callback = dmi_disable_osi_linux,
-        .ident = "Dell",
+        .ident = "Dell i1501",
         .matches = {
                      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
                      DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1501"),
@@ -318,7 +319,7 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
         },
         { /* OSI(Linux) effect unknown */
         .callback = dmi_unknown_osi_linux,
-        .ident = "Dell",
+        .ident = "Dell Latitude D830",
         .matches = {
                      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
                      DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D830"),
@@ -326,7 +327,7 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
         },
         { /* OSI(Linux) effect unknown */
         .callback = dmi_unknown_osi_linux,
-        .ident = "Dell",
+        .ident = "Dell OP GX620",
         .matches = {
                      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
                      DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex GX620"),
@@ -334,15 +335,23 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
         },
         { /* OSI(Linux) effect unknown */
         .callback = dmi_unknown_osi_linux,
-        .ident = "Dell",
+        .ident = "Dell PE 1900",
         .matches = {
                      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
                      DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1900"),
                 },
         },
+        { /* OSI(Linux) is a NOP */
+        .callback = dmi_disable_osi_linux,
+        .ident = "Dell PE R200",
+        .matches = {
+                     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+                     DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge R200"),
+                },
+        },
         { /* OSI(Linux) touches USB */
         .callback = dmi_disable_osi_linux,
-        .ident = "Dell",
+        .ident = "Dell PR 390",
         .matches = {
                      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
                      DMI_MATCH(DMI_PRODUCT_NAME, "Precision WorkStation 390"),
@@ -358,7 +367,7 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
         },
         { /* OSI(Linux) effect unknown */
         .callback = dmi_unknown_osi_linux,
-        .ident = "Dell",
+        .ident = "Dell PE SC440",
         .matches = {
                      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
                      DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge SC440"),
@@ -474,6 +483,11 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
          *
          * _OSI(Linux) confirmed to be a NOP:
          * DMI_MATCH(DMI_PRODUCT_NAME, "P1-J150B"),
+         * with DMI_MATCH(DMI_BOARD_NAME, "ROCKY"),
+         *
+         * unknown:
+         * DMI_MATCH(DMI_PRODUCT_NAME, "S1-MDGDG"),
+         * with DMI_MATCH(DMI_BOARD_NAME, "ROCKY"),
          */
         {
         .callback = dmi_disable_osi_linux,
@@ -516,7 +530,7 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
          * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FZ11M"),
          */
         {
-        .callback = dmi_unknown_osi_linux,
+        .callback = dmi_disable_osi_linux,
         .ident = "Sony",
         .matches = {
                      DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 1b4cf984b081..8b0d4b7d188a 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -122,6 +122,31 @@ int acpi_bus_get_status(struct acpi_device *device)
 
 EXPORT_SYMBOL(acpi_bus_get_status);
 
+void acpi_bus_private_data_handler(acpi_handle handle,
+                                   u32 function, void *context)
+{
+        return;
+}
+EXPORT_SYMBOL(acpi_bus_private_data_handler);
+
+int acpi_bus_get_private_data(acpi_handle handle, void **data)
+{
+        acpi_status status = AE_OK;
+
+        if (!*data)
+                return -EINVAL;
+
+        status = acpi_get_data(handle, acpi_bus_private_data_handler, data);
+        if (ACPI_FAILURE(status) || !*data) {
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n",
+                                handle));
+                return -ENODEV;
+        }
+
+        return 0;
+}
+EXPORT_SYMBOL(acpi_bus_get_private_data);
+
 /* --------------------------------------------------------------------------
                                  Power Management
    -------------------------------------------------------------------------- */
@@ -366,7 +391,6 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
         return 0;
 }
 
-EXPORT_SYMBOL(acpi_bus_receive_event);
 #endif  /* CONFIG_ACPI_PROC_EVENT */
 
 /* --------------------------------------------------------------------------
diff --git a/drivers/acpi/debug.c b/drivers/acpi/debug.c
index bf513e07b773..6df564f4ca6e 100644
--- a/drivers/acpi/debug.c
+++ b/drivers/acpi/debug.c
@@ -130,6 +130,63 @@ static int param_get_debug_level(char *buffer, struct kernel_param *kp) {
 module_param_call(debug_layer, param_set_uint, param_get_debug_layer, &acpi_dbg_layer, 0644);
 module_param_call(debug_level, param_set_uint, param_get_debug_level, &acpi_dbg_level, 0644);
 
+static char trace_method_name[6];
+module_param_string(trace_method_name, trace_method_name, 6, 0644);
+static unsigned int trace_debug_layer;
+module_param(trace_debug_layer, uint, 0644);
+static unsigned int trace_debug_level;
+module_param(trace_debug_level, uint, 0644);
+
+static int param_set_trace_state(const char *val, struct kernel_param *kp)
+{
+        int result = 0;
+
+        if (!strncmp(val, "enable", strlen("enable") - 1)) {
+                result = acpi_debug_trace(trace_method_name, trace_debug_level,
+                                          trace_debug_layer, 0);
+                if (result)
+                        result = -EBUSY;
+                goto exit;
+        }
+
+        if (!strncmp(val, "disable", strlen("disable") - 1)) {
+                int name = 0;
+                result = acpi_debug_trace((char *)&name, trace_debug_level,
+                                          trace_debug_layer, 0);
+                if (result)
+                        result = -EBUSY;
+                goto exit;
+        }
+
+        if (!strncmp(val, "1", 1)) {
+                result = acpi_debug_trace(trace_method_name, trace_debug_level,
+                                          trace_debug_layer, 1);
+                if (result)
+                        result = -EBUSY;
+                goto exit;
+        }
+
+        result = -EINVAL;
+exit:
+        return result;
+}
+
+static int param_get_trace_state(char *buffer, struct kernel_param *kp)
+{
+        if (!acpi_gbl_trace_method_name)
+                return sprintf(buffer, "disable");
+        else {
+                if (acpi_gbl_trace_flags & 1)
+                        return sprintf(buffer, "1");
+                else
+                        return sprintf(buffer, "enable");
+        }
+        return 0;
+}
+
+module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
+                  NULL, 0644);
+
 /* --------------------------------------------------------------------------
                               FS Interface (/proc)
    -------------------------------------------------------------------------- */
diff --git a/drivers/acpi/dispatcher/dsopcode.c b/drivers/acpi/dispatcher/dsopcode.c
index fc9da4879cbf..f501e083aac7 100644
--- a/drivers/acpi/dispatcher/dsopcode.c
+++ b/drivers/acpi/dispatcher/dsopcode.c
@@ -359,7 +359,9 @@ acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc)
 
         status = acpi_os_validate_address(obj_desc->region.space_id,
                                           obj_desc->region.address,
-                                          (acpi_size) obj_desc->region.length);
+                                          (acpi_size) obj_desc->region.length,
+                                          acpi_ut_get_node_name(node));
+
         if (ACPI_FAILURE(status)) {
                 /*
                  * Invalid address/length. We will emit an error message and mark
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 1dabdf4c07b3..307cef65c247 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -51,6 +51,12 @@ static struct atomic_notifier_head dock_notifier_list;
 static struct platform_device *dock_device;
 static char dock_device_name[] = "dock";
 
+static const struct acpi_device_id dock_device_ids[] = {
+        {"LNXDOCK", 0},
+        {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, dock_device_ids);
+
 struct dock_station {
         acpi_handle handle;
         unsigned long last_dock_time;
@@ -680,7 +686,7 @@ static ssize_t show_docked(struct device *dev,
         return snprintf(buf, PAGE_SIZE, "%d\n", dock_present(dock_station));
 
 }
-DEVICE_ATTR(docked, S_IRUGO, show_docked, NULL);
+static DEVICE_ATTR(docked, S_IRUGO, show_docked, NULL);
 
 /*
  * show_flags - read method for flags file in sysfs
@@ -691,7 +697,7 @@ static ssize_t show_flags(struct device *dev,
         return snprintf(buf, PAGE_SIZE, "%d\n", dock_station->flags);
 
 }
-DEVICE_ATTR(flags, S_IRUGO, show_flags, NULL);
+static DEVICE_ATTR(flags, S_IRUGO, show_flags, NULL);
 
 /*
  * write_undock - write method for "undock" file in sysfs
@@ -707,7 +713,7 @@ static ssize_t write_undock(struct device *dev, struct device_attribute *attr,
         ret = handle_eject_request(dock_station, ACPI_NOTIFY_EJECT_REQUEST);
         return ret ? ret: count;
 }
-DEVICE_ATTR(undock, S_IWUSR, NULL, write_undock);
+static DEVICE_ATTR(undock, S_IWUSR, NULL, write_undock);
 
 /*
  * show_dock_uid - read method for "uid" file in sysfs
@@ -723,7 +729,7 @@ static ssize_t show_dock_uid(struct device *dev,
 
         return snprintf(buf, PAGE_SIZE, "%lx\n", lbuf);
 }
-DEVICE_ATTR(uid, S_IRUGO, show_dock_uid, NULL);
+static DEVICE_ATTR(uid, S_IRUGO, show_dock_uid, NULL);
 
 /**
  * dock_add - add a new dock station
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 987b967c7467..7222a18a0319 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -573,7 +573,7 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
                       void *handler_context, void *region_context)
 {
         struct acpi_ec *ec = handler_context;
-        int result = 0, i = 0;
+        int result = 0, i;
         u8 temp = 0;
 
         if ((address > 0xFF) || !value || !handler_context)
@@ -585,7 +585,18 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
         if (bits != 8 && acpi_strict)
                 return AE_BAD_PARAMETER;
 
-        while (bits - i > 0) {
+        acpi_ec_burst_enable(ec);
+
+        if (function == ACPI_READ) {
+                result = acpi_ec_read(ec, address, &temp);
+                *value = temp;
+        } else {
+                temp = 0xff & (*value);
+                result = acpi_ec_write(ec, address, temp);
+        }
+
+        for (i = 8; unlikely(bits - i > 0); i += 8) {
+                ++address;
                 if (function == ACPI_READ) {
                         result = acpi_ec_read(ec, address, &temp);
                         (*value) |= ((acpi_integer)temp) << i;
@@ -593,10 +604,10 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
                         temp = 0xff & ((*value) >> i);
                         result = acpi_ec_write(ec, address, temp);
                 }
-                i += 8;
-                ++address;
         }
 
+        acpi_ec_burst_disable(ec);
+
         switch (result) {
         case -EINVAL:
                 return AE_BAD_PARAMETER;
diff --git a/drivers/acpi/event.c b/drivers/acpi/event.c
index 5c95863f8fa9..5479dc0eeeec 100644
--- a/drivers/acpi/event.c
+++ b/drivers/acpi/event.c
@@ -109,6 +109,34 @@ static const struct file_operations acpi_system_event_ops = {
 };
 #endif  /* CONFIG_ACPI_PROC_EVENT */
 
+/* ACPI notifier chain */
+BLOCKING_NOTIFIER_HEAD(acpi_chain_head);
+
+int acpi_notifier_call_chain(struct acpi_device *dev, u32 type, u32 data)
+{
+        struct acpi_bus_event event;
+
+        strcpy(event.device_class, dev->pnp.device_class);
+        strcpy(event.bus_id, dev->pnp.bus_id);
+        event.type = type;
+        event.data = data;
+        return (blocking_notifier_call_chain(&acpi_chain_head, 0, (void *)&event)
+                        == NOTIFY_BAD) ? -EINVAL : 0;
+}
+EXPORT_SYMBOL(acpi_notifier_call_chain);
+
+int register_acpi_notifier(struct notifier_block *nb)
+{
+        return blocking_notifier_chain_register(&acpi_chain_head, nb);
+}
+EXPORT_SYMBOL(register_acpi_notifier);
+
+int unregister_acpi_notifier(struct notifier_block *nb)
+{
+        return blocking_notifier_chain_unregister(&acpi_chain_head, nb);
+}
+EXPORT_SYMBOL(unregister_acpi_notifier);
+
 #ifdef CONFIG_NET
 static unsigned int acpi_event_seqnum;
 struct acpi_genl_event {
diff --git a/drivers/acpi/events/evevent.c b/drivers/acpi/events/evevent.c
index e41287815ea1..3048801a37b5 100644
--- a/drivers/acpi/events/evevent.c
+++ b/drivers/acpi/events/evevent.c
@@ -259,7 +259,7 @@ u32 acpi_ev_fixed_event_detect(void)
                         enable_bit_mask)) {
 
                         /* Found an active (signalled) event */
-
+                        acpi_os_fixed_event_count(i);
                         int_status |= acpi_ev_fixed_event_dispatch((u32) i);
                 }
         }
diff --git a/drivers/acpi/events/evgpe.c b/drivers/acpi/events/evgpe.c
index e22f4a973c0f..0dadd2adc800 100644
--- a/drivers/acpi/events/evgpe.c
+++ b/drivers/acpi/events/evgpe.c
@@ -270,18 +270,18 @@ acpi_status acpi_ev_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
         case ACPI_GPE_TYPE_WAKE_RUN:
                 ACPI_CLEAR_BIT(gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED);
 
-                /*lint -fallthrough */
+                /* fallthrough */
 
         case ACPI_GPE_TYPE_RUNTIME:
 
                 /* Disable the requested runtime GPE */
 
                 ACPI_CLEAR_BIT(gpe_event_info->flags, ACPI_GPE_RUN_ENABLED);
-                status = acpi_hw_write_gpe_enable_reg(gpe_event_info);
-                break;
+
+                /* fallthrough */
 
         default:
-                return_ACPI_STATUS(AE_BAD_PARAMETER);
+                acpi_hw_write_gpe_enable_reg(gpe_event_info);
         }
 
         return_ACPI_STATUS(AE_OK);
@@ -501,6 +501,7 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
  *              an interrupt handler.
  *
  ******************************************************************************/
+static void acpi_ev_asynch_enable_gpe(void *context);
 
 static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
 {
@@ -576,22 +577,30 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
                                          method_node)));
                 }
         }
+        /* Defer enabling of GPE until all notify handlers are done */
+        acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_ev_asynch_enable_gpe,
+                                gpe_event_info);
+        return_VOID;
+}
 
-        if ((local_gpe_event_info.flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
+static void acpi_ev_asynch_enable_gpe(void *context)
+{
+        struct acpi_gpe_event_info *gpe_event_info = context;
+        acpi_status status;
+        if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
             ACPI_GPE_LEVEL_TRIGGERED) {
                 /*
                  * GPE is level-triggered, we clear the GPE status bit after
                  * handling the event.
                  */
-                status = acpi_hw_clear_gpe(&local_gpe_event_info);
+                status = acpi_hw_clear_gpe(gpe_event_info);
                 if (ACPI_FAILURE(status)) {
                         return_VOID;
                 }
         }
 
         /* Enable this GPE */
-
-        (void)acpi_hw_write_gpe_enable_reg(&local_gpe_event_info);
+        (void)acpi_hw_write_gpe_enable_reg(gpe_event_info);
         return_VOID;
 }
 
@@ -618,7 +627,7 @@ acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
 
         ACPI_FUNCTION_TRACE(ev_gpe_dispatch);
 
-        acpi_gpe_count++;
+        acpi_os_gpe_count(gpe_number);
 
         /*
          * If edge-triggered, clear the GPE status bit now.  Note that
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index a6e149d692cb..48cb705b274a 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -30,7 +30,7 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <asm/uaccess.h>
-
+#include <linux/thermal.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 
@@ -68,9 +68,55 @@ static struct acpi_driver acpi_fan_driver = {
                 },
 };
 
+/* thermal cooling device callbacks */
+static int fan_get_max_state(struct thermal_cooling_device *cdev, char *buf)
+{
+        /* ACPI fan device only support two states: ON/OFF */
+        return sprintf(buf, "1\n");
+}
+
+static int fan_get_cur_state(struct thermal_cooling_device *cdev, char *buf)
+{
+        struct acpi_device *device = cdev->devdata;
+        int state;
+        int result;
+
+        if (!device)
+                return -EINVAL;
+
+        result = acpi_bus_get_power(device->handle, &state);
+        if (result)
+                return result;
+
+        return sprintf(buf, "%s\n", state == ACPI_STATE_D3 ? "0" :
+                         (state == ACPI_STATE_D0 ? "1" : "unknown"));
+}
+
+static int
+fan_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state)
+{
+        struct acpi_device *device = cdev->devdata;
+        int result;
+
+        if (!device || (state != 0 && state != 1))
+                return -EINVAL;
+
+        result = acpi_bus_set_power(device->handle,
+                                state ? ACPI_STATE_D0 : ACPI_STATE_D3);
+
+        return result;
+}
+
+static struct thermal_cooling_device_ops fan_cooling_ops = {
+        .get_max_state = fan_get_max_state,
+        .get_cur_state = fan_get_cur_state,
+        .set_cur_state = fan_set_cur_state,
+};
+
 /* --------------------------------------------------------------------------
                               FS Interface (/proc)
    -------------------------------------------------------------------------- */
+#ifdef CONFIG_ACPI_PROCFS
 
 static struct proc_dir_entry *acpi_fan_dir;
 
@@ -171,7 +217,17 @@ static int acpi_fan_remove_fs(struct acpi_device *device)
 
         return 0;
 }
+#else
+static int acpi_fan_add_fs(struct acpi_device *device)
+{
+        return 0;
+}
 
+static int acpi_fan_remove_fs(struct acpi_device *device)
+{
+        return 0;
+}
+#endif
 /* --------------------------------------------------------------------------
                                  Driver Interface
    -------------------------------------------------------------------------- */
@@ -179,9 +235,8 @@ static int acpi_fan_remove_fs(struct acpi_device *device)
 static int acpi_fan_add(struct acpi_device *device)
 {
         int result = 0;
-        struct acpi_fan *fan = NULL;
         int state = 0;
-
+        struct thermal_cooling_device *cdev;
 
         if (!device)
                 return -EINVAL;
@@ -199,6 +254,25 @@ static int acpi_fan_add(struct acpi_device *device)
         acpi_bus_set_power(device->handle, state);
         device->flags.force_power_state = 0;
 
+        cdev = thermal_cooling_device_register("Fan", device,
+                                                &fan_cooling_ops);
+        if (cdev)
+                printk(KERN_INFO PREFIX
+                        "%s is registered as cooling_device%d\n",
+                        device->dev.bus_id, cdev->id);
+        else
+                goto end;
+        acpi_driver_data(device) = cdev;
+        result = sysfs_create_link(&device->dev.kobj, &cdev->device.kobj,
+                                        "thermal_cooling");
+        if (result)
+                return result;
+
+        result = sysfs_create_link(&cdev->device.kobj, &device->dev.kobj,
+                                       "device");
+        if (result)
+                return result;
+
         result = acpi_fan_add_fs(device);
         if (result)
                 goto end;
@@ -208,18 +282,20 @@ static int acpi_fan_add(struct acpi_device *device)
                !device->power.state ? "on" : "off");
 
       end:
-        if (result)
-                kfree(fan);
-
         return result;
 }
 
 static int acpi_fan_remove(struct acpi_device *device, int type)
 {
-        if (!device || !acpi_driver_data(device))
+        struct thermal_cooling_device *cdev = acpi_driver_data(device);
+
+        if (!device || !cdev)
                 return -EINVAL;
 
         acpi_fan_remove_fs(device);
+        sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
+        sysfs_remove_link(&cdev->device.kobj, "device");
+        thermal_cooling_device_unregister(cdev);
 
         return 0;
 }
@@ -261,10 +337,12 @@ static int __init acpi_fan_init(void)
         int result = 0;
 
 
+#ifdef CONFIG_ACPI_PROCFS
         acpi_fan_dir = proc_mkdir(ACPI_FAN_CLASS, acpi_root_dir);
         if (!acpi_fan_dir)
                 return -ENODEV;
         acpi_fan_dir->owner = THIS_MODULE;
+#endif
 
         result = acpi_bus_register_driver(&acpi_fan_driver);
         if (result < 0) {
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 4893e256e399..eda0978b57c6 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -36,8 +36,6 @@ int register_acpi_bus_type(struct acpi_bus_type *type)
         return -ENODEV;
 }
 
-EXPORT_SYMBOL(register_acpi_bus_type);
-
 int unregister_acpi_bus_type(struct acpi_bus_type *type)
 {
         if (acpi_disabled)
@@ -53,8 +51,6 @@ int unregister_acpi_bus_type(struct acpi_bus_type *type)
         return -ENODEV;
 }
 
-EXPORT_SYMBOL(unregister_acpi_bus_type);
-
 static struct acpi_bus_type *acpi_get_bus_type(struct bus_type *type)
 {
         struct acpi_bus_type *tmp, *ret = NULL;
diff --git a/drivers/acpi/hardware/hwsleep.c b/drivers/acpi/hardware/hwsleep.c
index fd1c4ba63367..058d0be5cbe2 100644
--- a/drivers/acpi/hardware/hwsleep.c
+++ b/drivers/acpi/hardware/hwsleep.c
@@ -286,13 +286,13 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state)
         }
 
         /*
+         * 1) Disable/Clear all GPEs
          * 2) Enable all wakeup GPEs
          */
         status = acpi_hw_disable_all_gpes();
         if (ACPI_FAILURE(status)) {
                 return_ACPI_STATUS(status);
         }
-
         acpi_gbl_system_awake_and_running = FALSE;
 
         status = acpi_hw_enable_all_wakeup_gpes();
diff --git a/drivers/acpi/namespace/nsxfeval.c b/drivers/acpi/namespace/nsxfeval.c
index f39fbc6b9237..b92133faf5b7 100644
--- a/drivers/acpi/namespace/nsxfeval.c
+++ b/drivers/acpi/namespace/nsxfeval.c
@@ -443,6 +443,7 @@ acpi_ns_get_device_callback(acpi_handle obj_handle,
         struct acpica_device_id hid;
         struct acpi_compatible_id_list *cid;
         acpi_native_uint i;
+        int found;
 
         status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
         if (ACPI_FAILURE(status)) {
@@ -496,16 +497,19 @@ acpi_ns_get_device_callback(acpi_handle obj_handle,
 
                         /* Walk the CID list */
 
+                        found = 0;
                         for (i = 0; i < cid->count; i++) {
                                 if (ACPI_STRNCMP(cid->id[i].value, info->hid,
                                                  sizeof(struct
-                                                        acpi_compatible_id)) !=
+                                                        acpi_compatible_id)) ==
                                     0) {
-                                        ACPI_FREE(cid);
-                                        return (AE_OK);
+                                        found = 1;
+                                        break;
                                 }
                         }
                         ACPI_FREE(cid);
+                        if (!found)
+                                return (AE_OK);
                 }
         }
 
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index 0822d9fc1cb4..5d59cb33b1a5 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -78,6 +78,7 @@ int acpi_map_pxm_to_node(int pxm)
         return node;
 }
 
+#if 0
 void __cpuinit acpi_unmap_pxm_to_node(int node)
 {
         int pxm = node_to_pxm_map[node];
@@ -85,6 +86,7 @@ void __cpuinit acpi_unmap_pxm_to_node(int node)
         node_to_pxm_map[node] = PXM_INVAL;
         node_clear(node, nodes_found_map);
 }
+#endif  /*  0  */
 
 static void __init
 acpi_table_print_srat_entry(struct acpi_subtable_header *header)
@@ -247,7 +249,6 @@ int acpi_get_pxm(acpi_handle h)
         } while (ACPI_SUCCESS(status));
         return -1;
 }
-EXPORT_SYMBOL(acpi_get_pxm);
 
 int acpi_get_node(acpi_handle *handle)
 {
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index e53fb516f9d4..27ccd68b8f46 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -44,6 +44,8 @@
 #include <asm/uaccess.h>
 
 #include <linux/efi.h>
+#include <linux/ioport.h>
+#include <linux/list.h>
 
 #define _COMPONENT              ACPI_OS_SERVICES
 ACPI_MODULE_NAME("osl");
@@ -74,9 +76,25 @@ static void *acpi_irq_context;
 static struct workqueue_struct *kacpid_wq;
 static struct workqueue_struct *kacpi_notify_wq;
 
+struct acpi_res_list {
+        resource_size_t start;
+        resource_size_t end;
+        acpi_adr_space_type resource_type; /* IO port, System memory, ...*/
+        char name[5];   /* only can have a length of 4 chars, make use of this
+                           one instead of res->name, no need to kalloc then */
+        struct list_head resource_list;
+};
+
+static LIST_HEAD(resource_list_head);
+static DEFINE_SPINLOCK(acpi_res_lock);
+
 #define OSI_STRING_LENGTH_MAX 64        /* arbitrary */
 static char osi_additional_string[OSI_STRING_LENGTH_MAX];
 
+#ifdef CONFIG_ACPI_CUSTOM_DSDT_INITRD
+static int acpi_no_initrd_override;
+#endif
+
 /*
  * "Ode to _OSI(Linux)"
  *
@@ -120,7 +138,7 @@ static char osi_additional_string[OSI_STRING_LENGTH_MAX];
  */
 #define OSI_LINUX_ENABLE 0
 
-struct osi_linux {
+static struct osi_linux {
         unsigned int    enable:1;
         unsigned int    dmi:1;
         unsigned int    cmdline:1;
@@ -219,8 +237,6 @@ void acpi_os_printf(const char *fmt, ...)
         va_end(args);
 }
 
-EXPORT_SYMBOL(acpi_os_printf);
-
 void acpi_os_vprintf(const char *fmt, va_list args)
 {
         static char buffer[512];
@@ -250,11 +266,16 @@ acpi_physical_address __init acpi_os_get_root_pointer(void)
                                "System description tables not found\n");
                         return 0;
                 }
-        } else
-                return acpi_find_rsdp();
+        } else {
+                acpi_physical_address pa = 0;
+
+                acpi_find_root_pointer(&pa);
+                return pa;
+        }
 }
 
-void __iomem *acpi_os_map_memory(acpi_physical_address phys, acpi_size size)
+void __iomem *__init_refok
+acpi_os_map_memory(acpi_physical_address phys, acpi_size size)
 {
         if (phys > ULONG_MAX) {
                 printk(KERN_ERR PREFIX "Cannot map memory that high\n");
@@ -312,6 +333,67 @@ acpi_os_predefined_override(const struct acpi_predefined_names *init_val,
         return AE_OK;
 }
 
+#ifdef CONFIG_ACPI_CUSTOM_DSDT_INITRD
+struct acpi_table_header *acpi_find_dsdt_initrd(void)
+{
+        struct file *firmware_file;
+        mm_segment_t oldfs;
+        unsigned long len, len2;
+        struct acpi_table_header *dsdt_buffer, *ret = NULL;
+        struct kstat stat;
+        char *ramfs_dsdt_name = "/DSDT.aml";
+
+        printk(KERN_INFO PREFIX "Checking initramfs for custom DSDT");
+
+        /*
+         * Never do this at home, only the user-space is allowed to open a file.
+         * The clean way would be to use the firmware loader.
+         * But this code must be run before there is any userspace available.
+         * A static/init firmware infrastructure doesn't exist yet...
+         */
+        if (vfs_stat(ramfs_dsdt_name, &stat) < 0)
+                return ret;
+
+        len = stat.size;
+        /* check especially against empty files */
+        if (len <= 4) {
+                printk(KERN_ERR PREFIX "Failed: DSDT only %lu bytes.\n", len);
+                return ret;
+        }
+
+        firmware_file = filp_open(ramfs_dsdt_name, O_RDONLY, 0);
+        if (IS_ERR(firmware_file)) {
+                printk(KERN_ERR PREFIX "Failed to open %s.\n", ramfs_dsdt_name);
+                return ret;
+        }
+
+        dsdt_buffer = kmalloc(len, GFP_ATOMIC);
+        if (!dsdt_buffer) {
+                printk(KERN_ERR PREFIX "Failed to allocate %lu bytes.\n", len);
+                goto err;
+        }
+
+        oldfs = get_fs();
+        set_fs(KERNEL_DS);
+        len2 = vfs_read(firmware_file, (char __user *)dsdt_buffer, len,
+                &firmware_file->f_pos);
+        set_fs(oldfs);
+        if (len2 < len) {
+                printk(KERN_ERR PREFIX "Failed to read %lu bytes from %s.\n",
+                        len, ramfs_dsdt_name);
+                ACPI_FREE(dsdt_buffer);
+                goto err;
+        }
+
+        printk(KERN_INFO PREFIX "Found %lu byte DSDT in %s.\n",
+                        len, ramfs_dsdt_name);
+        ret = dsdt_buffer;
+err:
+        filp_close(firmware_file, NULL);
+        return ret;
+}
+#endif
+
 acpi_status
 acpi_os_table_override(struct acpi_table_header * existing_table,
                        struct acpi_table_header ** new_table)
@@ -319,20 +401,52 @@ acpi_os_table_override(struct acpi_table_header * existing_table,
         if (!existing_table || !new_table)
                 return AE_BAD_PARAMETER;
 
+        *new_table = NULL;
+
 #ifdef CONFIG_ACPI_CUSTOM_DSDT
         if (strncmp(existing_table->signature, "DSDT", 4) == 0)
                 *new_table = (struct acpi_table_header *)AmlCode;
-        else
-                *new_table = NULL;
-#else
-        *new_table = NULL;
 #endif
+#ifdef CONFIG_ACPI_CUSTOM_DSDT_INITRD
+        if ((strncmp(existing_table->signature, "DSDT", 4) == 0) &&
+            !acpi_no_initrd_override) {
+                struct acpi_table_header *initrd_table;
+
+                initrd_table = acpi_find_dsdt_initrd();
+                if (initrd_table)
+                        *new_table = initrd_table;
+        }
+#endif
+        if (*new_table != NULL) {
+                printk(KERN_WARNING PREFIX "Override [%4.4s-%8.8s], "
+                           "this is unsafe: tainting kernel\n",
+                       existing_table->signature,
+                       existing_table->oem_table_id);
+                add_taint(TAINT_OVERRIDDEN_ACPI_TABLE);
+        }
         return AE_OK;
 }
 
+#ifdef CONFIG_ACPI_CUSTOM_DSDT_INITRD
+int __init acpi_no_initrd_override_setup(char *s)
+{
+        acpi_no_initrd_override = 1;
+        return 1;
+}
+__setup("acpi_no_initrd_override", acpi_no_initrd_override_setup);
+#endif
+
 static irqreturn_t acpi_irq(int irq, void *dev_id)
 {
-        return (*acpi_irq_handler) (acpi_irq_context) ? IRQ_HANDLED : IRQ_NONE;
+        u32 handled;
+
+        handled = (*acpi_irq_handler) (acpi_irq_context);
+
+        if (handled) {
+                acpi_irq_handled++;
+                return IRQ_HANDLED;
+        } else
+                return IRQ_NONE;
 }
 
 acpi_status
@@ -341,6 +455,8 @@ acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler,
 {
         unsigned int irq;
 
+        acpi_irq_stats_init();
+
         /*
          * Ignore the GSI from the core, and use the value in our copy of the
          * FADT. It may not be the same if an interrupt source override exists
@@ -384,8 +500,6 @@ void acpi_os_sleep(acpi_integer ms)
         schedule_timeout_interruptible(msecs_to_jiffies(ms));
 }
 
-EXPORT_SYMBOL(acpi_os_sleep);
-
 void acpi_os_stall(u32 us)
 {
         while (us) {
@@ -399,8 +513,6 @@ void acpi_os_stall(u32 us)
         }
 }
 
-EXPORT_SYMBOL(acpi_os_stall);
-
 /*
  * Support ACPI 3.0 AML Timer operand
  * Returns 64-bit free-running, monotonically increasing timer
@@ -550,8 +662,6 @@ acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg,
         return (result ? AE_ERROR : AE_OK);
 }
 
-EXPORT_SYMBOL(acpi_os_read_pci_configuration);
-
 acpi_status
 acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg,
                                 acpi_integer value, u32 width)
@@ -661,25 +771,6 @@ static void acpi_os_execute_deferred(struct work_struct *work)
         dpc->function(dpc->context);
         kfree(dpc);
 
-        /* Yield cpu to notify thread */
-        cond_resched();
-
-        return;
-}
-
-static void acpi_os_execute_notify(struct work_struct *work)
-{
-        struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work);
-
-        if (!dpc) {
-                printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
-                return;
-        }
-
-        dpc->function(dpc->context);
-
-        kfree(dpc);
-
         return;
 }
 
@@ -703,7 +794,7 @@ acpi_status acpi_os_execute(acpi_execute_type type,
 {
         acpi_status status = AE_OK;
         struct acpi_os_dpc *dpc;
-
+        struct workqueue_struct *queue;
         ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
                           "Scheduling function [%p(%p)] for deferred execution.\n",
                           function, context));
@@ -727,20 +818,13 @@ acpi_status acpi_os_execute(acpi_execute_type type,
         dpc->function = function;
         dpc->context = context;
 
-        if (type == OSL_NOTIFY_HANDLER) {
-                INIT_WORK(&dpc->work, acpi_os_execute_notify);
-                if (!queue_work(kacpi_notify_wq, &dpc->work)) {
-                        status = AE_ERROR;
-                        kfree(dpc);
-                }
-        } else {
-                INIT_WORK(&dpc->work, acpi_os_execute_deferred);
-                if (!queue_work(kacpid_wq, &dpc->work)) {
-                        ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-                                  "Call to queue_work() failed.\n"));
-                        status = AE_ERROR;
-                        kfree(dpc);
-                }
+        INIT_WORK(&dpc->work, acpi_os_execute_deferred);
+        queue = (type == OSL_NOTIFY_HANDLER) ? kacpi_notify_wq : kacpid_wq;
+        if (!queue_work(queue, &dpc->work)) {
+                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                          "Call to queue_work() failed.\n"));
+                status = AE_ERROR;
+                kfree(dpc);
         }
         return_ACPI_STATUS(status);
 }
@@ -793,8 +877,6 @@ acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle)
         return AE_OK;
 }
 
-EXPORT_SYMBOL(acpi_os_create_semaphore);
-
 /*
  * TODO: A better way to delete semaphores?  Linux doesn't have a
  * 'delete_semaphore()' function -- may result in an invalid
@@ -818,8 +900,6 @@ acpi_status acpi_os_delete_semaphore(acpi_handle handle)
         return AE_OK;
 }
 
-EXPORT_SYMBOL(acpi_os_delete_semaphore);
-
 /*
  * TODO: The kernel doesn't have a 'down_timeout' function -- had to
  * improvise.  The process is to sleep for one scheduler quantum
@@ -912,8 +992,6 @@ acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout)
         return status;
 }
 
-EXPORT_SYMBOL(acpi_os_wait_semaphore);
-
 /*
  * TODO: Support for units > 1?
  */
@@ -936,8 +1014,6 @@ acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units)
         return AE_OK;
 }
 
-EXPORT_SYMBOL(acpi_os_signal_semaphore);
-
 #ifdef ACPI_FUTURE_USAGE
 u32 acpi_os_get_line(char *buffer)
 {
@@ -981,8 +1057,6 @@ acpi_status acpi_os_signal(u32 function, void *info)
         return AE_OK;
 }
 
-EXPORT_SYMBOL(acpi_os_signal);
-
 static int __init acpi_os_name_setup(char *str)
 {
         char *p = acpi_os_name;
@@ -1102,6 +1176,128 @@ static int __init acpi_wake_gpes_always_on_setup(char *str)
 
 __setup("acpi_wake_gpes_always_on", acpi_wake_gpes_always_on_setup);
 
+/* Check of resource interference between native drivers and ACPI
+ * OperationRegions (SystemIO and System Memory only).
+ * IO ports and memory declared in ACPI might be used by the ACPI subsystem
+ * in arbitrary AML code and can interfere with legacy drivers.
+ * acpi_enforce_resources= can be set to:
+ *
+ *   - strict           (2)
+ *     -> further driver trying to access the resources will not load
+ *   - lax (default)    (1)
+ *     -> further driver trying to access the resources will load, but you
+ *     get a system message that something might go wrong...
+ *
+ *   - no               (0)
+ *     -> ACPI Operation Region resources will not be registered
+ *
+ */
+#define ENFORCE_RESOURCES_STRICT 2
+#define ENFORCE_RESOURCES_LAX    1
+#define ENFORCE_RESOURCES_NO     0
+
+static unsigned int acpi_enforce_resources = ENFORCE_RESOURCES_LAX;
+
+static int __init acpi_enforce_resources_setup(char *str)
+{
+        if (str == NULL || *str == '\0')
+                return 0;
+
+        if (!strcmp("strict", str))
+                acpi_enforce_resources = ENFORCE_RESOURCES_STRICT;
+        else if (!strcmp("lax", str))
+                acpi_enforce_resources = ENFORCE_RESOURCES_LAX;
+        else if (!strcmp("no", str))
+                acpi_enforce_resources = ENFORCE_RESOURCES_NO;
+
+        return 1;
+}
+
+__setup("acpi_enforce_resources=", acpi_enforce_resources_setup);
+
+/* Check for resource conflicts between ACPI OperationRegions and native
+ * drivers */
+int acpi_check_resource_conflict(struct resource *res)
+{
+        struct acpi_res_list *res_list_elem;
+        int ioport;
+        int clash = 0;
+
+        if (acpi_enforce_resources == ENFORCE_RESOURCES_NO)
+                return 0;
+        if (!(res->flags & IORESOURCE_IO) && !(res->flags & IORESOURCE_MEM))
+                return 0;
+
+        ioport = res->flags & IORESOURCE_IO;
+
+        spin_lock(&acpi_res_lock);
+        list_for_each_entry(res_list_elem, &resource_list_head,
+                            resource_list) {
+                if (ioport && (res_list_elem->resource_type
+                               != ACPI_ADR_SPACE_SYSTEM_IO))
+                        continue;
+                if (!ioport && (res_list_elem->resource_type
+                                != ACPI_ADR_SPACE_SYSTEM_MEMORY))
+                        continue;
+
+                if (res->end < res_list_elem->start
+                    || res_list_elem->end < res->start)
+                        continue;
+                clash = 1;
+                break;
+        }
+        spin_unlock(&acpi_res_lock);
+
+        if (clash) {
+                if (acpi_enforce_resources != ENFORCE_RESOURCES_NO) {
+                        printk(KERN_INFO "%sACPI: %s resource %s [0x%llx-0x%llx]"
+                               " conflicts with ACPI region %s"
+                               " [0x%llx-0x%llx]\n",
+                               acpi_enforce_resources == ENFORCE_RESOURCES_LAX
+                               ? KERN_WARNING : KERN_ERR,
+                               ioport ? "I/O" : "Memory", res->name,
+                               (long long) res->start, (long long) res->end,
+                               res_list_elem->name,
+                               (long long) res_list_elem->start,
+                               (long long) res_list_elem->end);
+                        printk(KERN_INFO "ACPI: Device needs an ACPI driver\n");
+                }
+                if (acpi_enforce_resources == ENFORCE_RESOURCES_STRICT)
+                        return -EBUSY;
+        }
+        return 0;
+}
+EXPORT_SYMBOL(acpi_check_resource_conflict);
+
+int acpi_check_region(resource_size_t start, resource_size_t n,
+                      const char *name)
+{
+        struct resource res = {
+                .start = start,
+                .end   = start + n - 1,
+                .name  = name,
+                .flags = IORESOURCE_IO,
+        };
+
+        return acpi_check_resource_conflict(&res);
+}
+EXPORT_SYMBOL(acpi_check_region);
+
+int acpi_check_mem_region(resource_size_t start, resource_size_t n,
+                      const char *name)
+{
+        struct resource res = {
+                .start = start,
+                .end   = start + n - 1,
+                .name  = name,
+                .flags = IORESOURCE_MEM,
+        };
+
+        return acpi_check_resource_conflict(&res);
+
+}
+EXPORT_SYMBOL(acpi_check_mem_region);
+
 /*
  * Acquire a spinlock.
  *
@@ -1213,24 +1409,24 @@ acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object)
  *
  *      Returns 0 on success
  */
-int acpi_dmi_dump(void)
+static int acpi_dmi_dump(void)
 {
 
         if (!dmi_available)
                 return -1;
 
         printk(KERN_NOTICE PREFIX "DMI System Vendor: %s\n",
-                dmi_get_slot(DMI_SYS_VENDOR));
+                dmi_get_system_info(DMI_SYS_VENDOR));
         printk(KERN_NOTICE PREFIX "DMI Product Name: %s\n",
-                dmi_get_slot(DMI_PRODUCT_NAME));
+                dmi_get_system_info(DMI_PRODUCT_NAME));
         printk(KERN_NOTICE PREFIX "DMI Product Version: %s\n",
-                dmi_get_slot(DMI_PRODUCT_VERSION));
+                dmi_get_system_info(DMI_PRODUCT_VERSION));
         printk(KERN_NOTICE PREFIX "DMI Board Name: %s\n",
-                dmi_get_slot(DMI_BOARD_NAME));
+                dmi_get_system_info(DMI_BOARD_NAME));
         printk(KERN_NOTICE PREFIX "DMI BIOS Vendor: %s\n",
-                dmi_get_slot(DMI_BIOS_VENDOR));
+                dmi_get_system_info(DMI_BIOS_VENDOR));
         printk(KERN_NOTICE PREFIX "DMI BIOS Date: %s\n",
-                dmi_get_slot(DMI_BIOS_DATE));
+                dmi_get_system_info(DMI_BIOS_DATE));
 
         return 0;
 }
@@ -1303,10 +1499,46 @@ acpi_status
 acpi_os_validate_address (
     u8                   space_id,
     acpi_physical_address   address,
-    acpi_size               length)
+    acpi_size               length,
+    char *name)
 {
+        struct acpi_res_list *res;
+        if (acpi_enforce_resources == ENFORCE_RESOURCES_NO)
+                return AE_OK;
 
-    return AE_OK;
+        switch (space_id) {
+        case ACPI_ADR_SPACE_SYSTEM_IO:
+        case ACPI_ADR_SPACE_SYSTEM_MEMORY:
+                /* Only interference checks against SystemIO and SytemMemory
+                   are needed */
+                res = kzalloc(sizeof(struct acpi_res_list), GFP_KERNEL);
+                if (!res)
+                        return AE_OK;
+                /* ACPI names are fixed to 4 bytes, still better use strlcpy */
+                strlcpy(res->name, name, 5);
+                res->start = address;
+                res->end = address + length - 1;
+                res->resource_type = space_id;
+                spin_lock(&acpi_res_lock);
+                list_add(&res->resource_list, &resource_list_head);
+                spin_unlock(&acpi_res_lock);
+                pr_debug("Added %s resource: start: 0x%llx, end: 0x%llx, "
+                         "name: %s\n", (space_id == ACPI_ADR_SPACE_SYSTEM_IO)
+                         ? "SystemIO" : "System Memory",
+                         (unsigned long long)res->start,
+                         (unsigned long long)res->end,
+                         res->name);
+                break;
+        case ACPI_ADR_SPACE_PCI_CONFIG:
+        case ACPI_ADR_SPACE_EC:
+        case ACPI_ADR_SPACE_SMBUS:
+        case ACPI_ADR_SPACE_CMOS:
+        case ACPI_ADR_SPACE_PCI_BAR_TARGET:
+        case ACPI_ADR_SPACE_DATA_TABLE:
+        case ACPI_ADR_SPACE_FIXED_HARDWARE:
+                break;
+        }
+        return AE_OK;
 }
 
 #endif
diff --git a/drivers/acpi/pci_bind.c b/drivers/acpi/pci_bind.c
index 388300de005d..4b252ea0e952 100644
--- a/drivers/acpi/pci_bind.c
+++ b/drivers/acpi/pci_bind.c
@@ -44,6 +44,8 @@ struct acpi_pci_data {
         struct pci_dev *dev;
 };
 
+static int acpi_pci_unbind(struct acpi_device *device);
+
 static void acpi_pci_data_handler(acpi_handle handle, u32 function,
                                   void *context)
 {
@@ -267,7 +269,7 @@ int acpi_pci_bind(struct acpi_device *device)
         return result;
 }
 
-int acpi_pci_unbind(struct acpi_device *device)
+static int acpi_pci_unbind(struct acpi_device *device)
 {
         int result = 0;
         acpi_status status = AE_OK;
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index 62010c2481b3..7f19859580c7 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -51,10 +51,8 @@ static struct acpi_prt_entry *acpi_pci_irq_find_prt_entry(int segment,
                                                           int bus,
                                                           int device, int pin)
 {
-        struct list_head *node = NULL;
         struct acpi_prt_entry *entry = NULL;
 
-
         if (!acpi_prt.count)
                 return NULL;
 
@@ -64,8 +62,7 @@ static struct acpi_prt_entry *acpi_pci_irq_find_prt_entry(int segment,
          *
          */
         spin_lock(&acpi_prt_lock);
-        list_for_each(node, &acpi_prt.entries) {
-                entry = list_entry(node, struct acpi_prt_entry, node);
+        list_for_each_entry(entry, &acpi_prt.entries, node) {
                 if ((segment == entry->id.segment)
                     && (bus == entry->id.bus)
                     && (device == entry->id.device)
@@ -478,8 +475,6 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
         return 0;
 }
 
-EXPORT_SYMBOL(acpi_pci_irq_enable);
-
 /* FIXME: implement x86/x86_64 version */
 void __attribute__ ((weak)) acpi_unregister_gsi(u32 i)
 {
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index 5400ea173f6f..233c40c51684 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -95,7 +95,7 @@ static struct {
         int count;
         struct list_head entries;
 } acpi_link;
-DEFINE_MUTEX(acpi_link_lock);
+static DEFINE_MUTEX(acpi_link_lock);
 
 /* --------------------------------------------------------------------------
                             PCI Link Device Management
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index af1769a20c7a..76bf6d90c700 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -458,11 +458,9 @@ int acpi_power_transition(struct acpi_device *device, int state)
         }
 
      end:
-        if (result) {
+        if (result)
                 device->power.state = ACPI_STATE_UNKNOWN;
-                printk(KERN_WARNING PREFIX "Transitioning device [%s] to D%d\n",
-                              device->pnp.bus_id, state);
-        } else {
+        else {
         /* We shouldn't change the state till all above operations succeed */
                 device->power.state = state;
         }
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index e48ee4f8749f..75ccf5d18bf4 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -668,6 +668,24 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device)
 
         acpi_processor_power_init(pr, device);
 
+        pr->cdev = thermal_cooling_device_register("Processor", device,
+                                                &processor_cooling_ops);
+        if (pr->cdev)
+                printk(KERN_INFO PREFIX
+                        "%s is registered as cooling_device%d\n",
+                        device->dev.bus_id, pr->cdev->id);
+        else
+                goto end;
+
+        result = sysfs_create_link(&device->dev.kobj, &pr->cdev->device.kobj,
+                                        "thermal_cooling");
+        if (result)
+                return result;
+        result = sysfs_create_link(&pr->cdev->device.kobj, &device->dev.kobj,
+                                        "device");
+        if (result)
+                return result;
+
         if (pr->flags.throttling) {
                 printk(KERN_INFO PREFIX "%s [%s] (supports",
                        acpi_device_name(device), acpi_device_bid(device));
@@ -791,6 +809,11 @@ static int acpi_processor_remove(struct acpi_device *device, int type)
 
         acpi_processor_remove_fs(device);
 
+        sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
+        sysfs_remove_link(&pr->cdev->device.kobj, "device");
+        thermal_cooling_device_unregister(pr->cdev);
+        pr->cdev = NULL;
+
         processors[pr->id] = NULL;
 
         kfree(pr);
@@ -812,11 +835,18 @@ static int is_processor_present(acpi_handle handle)
 
 
         status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
-        if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_PRESENT)) {
-                ACPI_EXCEPTION((AE_INFO, status, "Processor Device is not present"));
-                return 0;
-        }
-        return 1;
+        /*
+         * if a processor object does not have an _STA object,
+         * OSPM assumes that the processor is present.
+         */
+        if (status == AE_NOT_FOUND)
+                return 1;
+
+        if (ACPI_SUCCESS(status) && (sta & ACPI_STA_DEVICE_PRESENT))
+                return 1;
+
+        ACPI_EXCEPTION((AE_INFO, status, "Processor Device is not present"));
+        return 0;
 }
 
 static
@@ -1061,6 +1091,8 @@ static int __init acpi_processor_init(void)
 
         acpi_processor_ppc_init();
 
+        acpi_processor_throttling_init();
+
         return 0;
 
 out_cpuidle:
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 199ea2146153..32003fdc91e8 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -98,6 +98,9 @@ module_param(bm_history, uint, 0644);
 
 static int acpi_processor_set_power_policy(struct acpi_processor *pr);
 
+#else   /* CONFIG_CPU_IDLE */
+static unsigned int latency_factor __read_mostly = 2;
+module_param(latency_factor, uint, 0644);
 #endif
 
 /*
@@ -201,6 +204,10 @@ static inline u32 ticks_elapsed_in_us(u32 t1, u32 t2)
                 return PM_TIMER_TICKS_TO_US((0xFFFFFFFF - t1) + t2);
 }
 
+/*
+ * Callers should disable interrupts before the call and enable
+ * interrupts after return.
+ */
 static void acpi_safe_halt(void)
 {
         current_thread_info()->status &= ~TS_POLLING;
@@ -261,7 +268,7 @@ static atomic_t c3_cpu_count;
 /* Common C-state entry for C2, C3, .. */
 static void acpi_cstate_enter(struct acpi_processor_cx *cstate)
 {
-        if (cstate->space_id == ACPI_CSTATE_FFH) {
+        if (cstate->entry_method == ACPI_CSTATE_FFH) {
                 /* Call into architectural FFH based C-state */
                 acpi_processor_ffh_cstate_enter(cstate);
         } else {
@@ -413,6 +420,8 @@ static void acpi_processor_idle(void)
                         pm_idle_save();
                 else
                         acpi_safe_halt();
+
+                local_irq_enable();
                 return;
         }
 
@@ -521,6 +530,7 @@ static void acpi_processor_idle(void)
                  *       skew otherwise.
                  */
                 sleep_ticks = 0xFFFFFFFF;
+                local_irq_enable();
                 break;
 
         case ACPI_STATE_C2:
@@ -922,20 +932,20 @@ static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
                 cx.address = reg->address;
                 cx.index = current_count + 1;
 
-                cx.space_id = ACPI_CSTATE_SYSTEMIO;
+                cx.entry_method = ACPI_CSTATE_SYSTEMIO;
                 if (reg->space_id == ACPI_ADR_SPACE_FIXED_HARDWARE) {
                         if (acpi_processor_ffh_cstate_probe
                                         (pr->id, &cx, reg) == 0) {
-                                cx.space_id = ACPI_CSTATE_FFH;
-                        } else if (cx.type != ACPI_STATE_C1) {
+                                cx.entry_method = ACPI_CSTATE_FFH;
+                        } else if (cx.type == ACPI_STATE_C1) {
                                 /*
                                  * C1 is a special case where FIXED_HARDWARE
                                  * can be handled in non-MWAIT way as well.
                                  * In that case, save this _CST entry info.
-                                 * That is, we retain space_id of SYSTEM_IO for
-                                 * halt based C1.
                                  * Otherwise, ignore this info and continue.
                                  */
+                                cx.entry_method = ACPI_CSTATE_HALT;
+                        } else {
                                 continue;
                         }
                 }
@@ -1369,12 +1379,16 @@ static inline void acpi_idle_update_bm_rld(struct acpi_processor *pr,
 /**
  * acpi_idle_do_entry - a helper function that does C2 and C3 type entry
  * @cx: cstate data
+ *
+ * Caller disables interrupt before call and enables interrupt after return.
  */
 static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx)
 {
-        if (cx->space_id == ACPI_CSTATE_FFH) {
+        if (cx->entry_method == ACPI_CSTATE_FFH) {
                 /* Call into architectural FFH based C-state */
                 acpi_processor_ffh_cstate_enter(cx);
+        } else if (cx->entry_method == ACPI_CSTATE_HALT) {
+                acpi_safe_halt();
         } else {
                 int unused;
                 /* IO port based C-state */
@@ -1396,21 +1410,27 @@ static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx)
 static int acpi_idle_enter_c1(struct cpuidle_device *dev,
                               struct cpuidle_state *state)
 {
+        u32 t1, t2;
         struct acpi_processor *pr;
         struct acpi_processor_cx *cx = cpuidle_get_statedata(state);
+
         pr = processors[smp_processor_id()];
 
         if (unlikely(!pr))
                 return 0;
 
+        local_irq_disable();
         if (pr->flags.bm_check)
                 acpi_idle_update_bm_rld(pr, cx);
 
-        acpi_safe_halt();
+        t1 = inl(acpi_gbl_FADT.xpm_timer_block.address);
+        acpi_idle_do_entry(cx);
+        t2 = inl(acpi_gbl_FADT.xpm_timer_block.address);
 
+        local_irq_enable();
         cx->usage++;
 
-        return 0;
+        return ticks_elapsed_in_us(t1, t2);
 }
 
 /**
@@ -1517,7 +1537,9 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
                 if (dev->safe_state) {
                         return dev->safe_state->enter(dev, dev->safe_state);
                 } else {
+                        local_irq_disable();
                         acpi_safe_halt();
+                        local_irq_enable();
                         return 0;
                 }
         }
@@ -1609,7 +1631,7 @@ struct cpuidle_driver acpi_idle_driver = {
  */
 static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
 {
-        int i, count = 0;
+        int i, count = CPUIDLE_DRIVER_STATE_START;
         struct acpi_processor_cx *cx;
         struct cpuidle_state *state;
         struct cpuidle_device *dev = &pr->power.dev;
@@ -1638,13 +1660,14 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
 
                 snprintf(state->name, CPUIDLE_NAME_LEN, "C%d", i);
                 state->exit_latency = cx->latency;
-                state->target_residency = cx->latency * 6;
+                state->target_residency = cx->latency * latency_factor;
                 state->power_usage = cx->power;
 
                 state->flags = 0;
                 switch (cx->type) {
                         case ACPI_STATE_C1:
                         state->flags |= CPUIDLE_FLAG_SHALLOW;
+                        state->flags |= CPUIDLE_FLAG_TIME_VALID;
                         state->enter = acpi_idle_enter_c1;
                         dev->safe_state = state;
                         break;
@@ -1667,6 +1690,8 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
                 }
 
                 count++;
+                if (count == CPUIDLE_STATE_MAX)
+                        break;
         }
 
         dev->state_count = count;
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 463b0247cbc5..f32010bee4d5 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -60,6 +60,11 @@ static DEFINE_MUTEX(performance_mutex);
  * policy is adjusted accordingly.
  */
 
+static unsigned int ignore_ppc = 0;
+module_param(ignore_ppc, uint, 0644);
+MODULE_PARM_DESC(ignore_ppc, "If the frequency of your machine gets wrongly" \
+                 "limited by BIOS, this should help");
+
 #define PPC_REGISTERED   1
 #define PPC_IN_USE       2
 
@@ -72,6 +77,9 @@ static int acpi_processor_ppc_notifier(struct notifier_block *nb,
         struct acpi_processor *pr;
         unsigned int ppc = 0;
 
+        if (ignore_ppc)
+                return 0;
+
         mutex_lock(&performance_mutex);
 
         if (event != CPUFREQ_INCOMPATIBLE)
@@ -130,7 +138,13 @@ static int acpi_processor_get_platform_limit(struct acpi_processor *pr)
 
 int acpi_processor_ppc_has_changed(struct acpi_processor *pr)
 {
-        int ret = acpi_processor_get_platform_limit(pr);
+        int ret;
+
+        if (ignore_ppc)
+                return 0;
+
+        ret = acpi_processor_get_platform_limit(pr);
+
         if (ret < 0)
                 return (ret);
         else
diff --git a/drivers/acpi/processor_thermal.c b/drivers/acpi/processor_thermal.c
index 06e6f3fb8825..9cb43f52f7b6 100644
--- a/drivers/acpi/processor_thermal.c
+++ b/drivers/acpi/processor_thermal.c
@@ -32,6 +32,7 @@
 #include <linux/cpufreq.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/sysdev.h>
 
 #include <asm/uaccess.h>
 
@@ -93,6 +94,9 @@ static int acpi_processor_apply_limit(struct acpi_processor *pr)
  * _any_ cpufreq driver and not only the acpi-cpufreq driver.
  */
 
+#define CPUFREQ_THERMAL_MIN_STEP 0
+#define CPUFREQ_THERMAL_MAX_STEP 3
+
 static unsigned int cpufreq_thermal_reduction_pctg[NR_CPUS];
 static unsigned int acpi_thermal_cpufreq_is_init = 0;
 
@@ -109,8 +113,9 @@ static int acpi_thermal_cpufreq_increase(unsigned int cpu)
         if (!cpu_has_cpufreq(cpu))
                 return -ENODEV;
 
-        if (cpufreq_thermal_reduction_pctg[cpu] < 60) {
-                cpufreq_thermal_reduction_pctg[cpu] += 20;
+        if (cpufreq_thermal_reduction_pctg[cpu] <
+                CPUFREQ_THERMAL_MAX_STEP) {
+                cpufreq_thermal_reduction_pctg[cpu]++;
                 cpufreq_update_policy(cpu);
                 return 0;
         }
@@ -123,8 +128,9 @@ static int acpi_thermal_cpufreq_decrease(unsigned int cpu)
         if (!cpu_has_cpufreq(cpu))
                 return -ENODEV;
 
-        if (cpufreq_thermal_reduction_pctg[cpu] > 20)
-                cpufreq_thermal_reduction_pctg[cpu] -= 20;
+        if (cpufreq_thermal_reduction_pctg[cpu] >
+                (CPUFREQ_THERMAL_MIN_STEP + 1))
+                cpufreq_thermal_reduction_pctg[cpu]--;
         else
                 cpufreq_thermal_reduction_pctg[cpu] = 0;
         cpufreq_update_policy(cpu);
@@ -143,7 +149,7 @@ static int acpi_thermal_cpufreq_notifier(struct notifier_block *nb,
 
         max_freq =
             (policy->cpuinfo.max_freq *
-             (100 - cpufreq_thermal_reduction_pctg[policy->cpu])) / 100;
+             (100 - cpufreq_thermal_reduction_pctg[policy->cpu] * 20)) / 100;
 
         cpufreq_verify_within_limits(policy, 0, max_freq);
 
@@ -155,6 +161,32 @@ static struct notifier_block acpi_thermal_cpufreq_notifier_block = {
         .notifier_call = acpi_thermal_cpufreq_notifier,
 };
 
+static int cpufreq_get_max_state(unsigned int cpu)
+{
+        if (!cpu_has_cpufreq(cpu))
+                return 0;
+
+        return CPUFREQ_THERMAL_MAX_STEP;
+}
+
+static int cpufreq_get_cur_state(unsigned int cpu)
+{
+        if (!cpu_has_cpufreq(cpu))
+                return 0;
+
+        return cpufreq_thermal_reduction_pctg[cpu];
+}
+
+static int cpufreq_set_cur_state(unsigned int cpu, int state)
+{
+        if (!cpu_has_cpufreq(cpu))
+                return 0;
+
+        cpufreq_thermal_reduction_pctg[cpu] = state;
+        cpufreq_update_policy(cpu);
+        return 0;
+}
+
 void acpi_thermal_cpufreq_init(void)
 {
         int i;
@@ -179,6 +211,20 @@ void acpi_thermal_cpufreq_exit(void)
 }
 
 #else                           /* ! CONFIG_CPU_FREQ */
+static int cpufreq_get_max_state(unsigned int cpu)
+{
+        return 0;
+}
+
+static int cpufreq_get_cur_state(unsigned int cpu)
+{
+        return 0;
+}
+
+static int cpufreq_set_cur_state(unsigned int cpu, int state)
+{
+        return 0;
+}
 
 static int acpi_thermal_cpufreq_increase(unsigned int cpu)
 {
@@ -310,6 +356,84 @@ int acpi_processor_get_limit_info(struct acpi_processor *pr)
         return 0;
 }
 
+/* thermal coolign device callbacks */
+static int acpi_processor_max_state(struct acpi_processor *pr)
+{
+        int max_state = 0;
+
+        /*
+         * There exists four states according to
+         * cpufreq_thermal_reduction_ptg. 0, 1, 2, 3
+         */
+        max_state += cpufreq_get_max_state(pr->id);
+        if (pr->flags.throttling)
+                max_state += (pr->throttling.state_count -1);
+
+        return max_state;
+}
+static int
+processor_get_max_state(struct thermal_cooling_device *cdev, char *buf)
+{
+        struct acpi_device *device = cdev->devdata;
+        struct acpi_processor *pr = acpi_driver_data(device);
+
+        if (!device || !pr)
+                return -EINVAL;
+
+        return sprintf(buf, "%d\n", acpi_processor_max_state(pr));
+}
+
+static int
+processor_get_cur_state(struct thermal_cooling_device *cdev, char *buf)
+{
+        struct acpi_device *device = cdev->devdata;
+        struct acpi_processor *pr = acpi_driver_data(device);
+        int cur_state;
+
+        if (!device || !pr)
+                return -EINVAL;
+
+        cur_state = cpufreq_get_cur_state(pr->id);
+        if (pr->flags.throttling)
+                cur_state += pr->throttling.state;
+
+        return sprintf(buf, "%d\n", cur_state);
+}
+
+static int
+processor_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state)
+{
+        struct acpi_device *device = cdev->devdata;
+        struct acpi_processor *pr = acpi_driver_data(device);
+        int result = 0;
+        int max_pstate;
+
+        if (!device || !pr)
+                return -EINVAL;
+
+        max_pstate = cpufreq_get_max_state(pr->id);
+
+        if (state > acpi_processor_max_state(pr))
+                return -EINVAL;
+
+        if (state <= max_pstate) {
+                if (pr->flags.throttling && pr->throttling.state)
+                        result = acpi_processor_set_throttling(pr, 0);
+                cpufreq_set_cur_state(pr->id, state);
+        } else {
+                cpufreq_set_cur_state(pr->id, max_pstate);
+                result = acpi_processor_set_throttling(pr,
+                                state - max_pstate);
+        }
+        return result;
+}
+
+struct thermal_cooling_device_ops processor_cooling_ops = {
+        .get_max_state = processor_get_max_state,
+        .get_cur_state = processor_get_cur_state,
+        .set_cur_state = processor_set_cur_state,
+};
+
 /* /proc interface */
 
 static int acpi_processor_limit_seq_show(struct seq_file *seq, void *offset)
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index 1685b40abda7..1b8e592a8241 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -45,9 +45,229 @@
 #define _COMPONENT              ACPI_PROCESSOR_COMPONENT
 ACPI_MODULE_NAME("processor_throttling");
 
+struct throttling_tstate {
+        unsigned int cpu;               /* cpu nr */
+        int target_state;               /* target T-state */
+};
+
+#define THROTTLING_PRECHANGE       (1)
+#define THROTTLING_POSTCHANGE      (2)
+
 static int acpi_processor_get_throttling(struct acpi_processor *pr);
 int acpi_processor_set_throttling(struct acpi_processor *pr, int state);
 
+static int acpi_processor_update_tsd_coord(void)
+{
+        int count, count_target;
+        int retval = 0;
+        unsigned int i, j;
+        cpumask_t covered_cpus;
+        struct acpi_processor *pr, *match_pr;
+        struct acpi_tsd_package *pdomain, *match_pdomain;
+        struct acpi_processor_throttling *pthrottling, *match_pthrottling;
+
+        /*
+         * Now that we have _TSD data from all CPUs, lets setup T-state
+         * coordination between all CPUs.
+         */
+        for_each_possible_cpu(i) {
+                pr = processors[i];
+                if (!pr)
+                        continue;
+
+                /* Basic validity check for domain info */
+                pthrottling = &(pr->throttling);
+
+                /*
+                 * If tsd package for one cpu is invalid, the coordination
+                 * among all CPUs is thought as invalid.
+                 * Maybe it is ugly.
+                 */
+                if (!pthrottling->tsd_valid_flag) {
+                        retval = -EINVAL;
+                        break;
+                }
+        }
+        if (retval)
+                goto err_ret;
+
+        cpus_clear(covered_cpus);
+        for_each_possible_cpu(i) {
+                pr = processors[i];
+                if (!pr)
+                        continue;
+
+                if (cpu_isset(i, covered_cpus))
+                        continue;
+                pthrottling = &pr->throttling;
+
+                pdomain = &(pthrottling->domain_info);
+                cpu_set(i, pthrottling->shared_cpu_map);
+                cpu_set(i, covered_cpus);
+                /*
+                 * If the number of processor in the TSD domain is 1, it is
+                 * unnecessary to parse the coordination for this CPU.
+                 */
+                if (pdomain->num_processors <= 1)
+                        continue;
+
+                /* Validate the Domain info */
+                count_target = pdomain->num_processors;
+                count = 1;
+
+                for_each_possible_cpu(j) {
+                        if (i == j)
+                                continue;
+
+                        match_pr = processors[j];
+                        if (!match_pr)
+                                continue;
+
+                        match_pthrottling = &(match_pr->throttling);
+                        match_pdomain = &(match_pthrottling->domain_info);
+                        if (match_pdomain->domain != pdomain->domain)
+                                continue;
+
+                        /* Here i and j are in the same domain.
+                         * If two TSD packages have the same domain, they
+                         * should have the same num_porcessors and
+                         * coordination type. Otherwise it will be regarded
+                         * as illegal.
+                         */
+                        if (match_pdomain->num_processors != count_target) {
+                                retval = -EINVAL;
+                                goto err_ret;
+                        }
+
+                        if (pdomain->coord_type != match_pdomain->coord_type) {
+                                retval = -EINVAL;
+                                goto err_ret;
+                        }
+
+                        cpu_set(j, covered_cpus);
+                        cpu_set(j, pthrottling->shared_cpu_map);
+                        count++;
+                }
+                for_each_possible_cpu(j) {
+                        if (i == j)
+                                continue;
+
+                        match_pr = processors[j];
+                        if (!match_pr)
+                                continue;
+
+                        match_pthrottling = &(match_pr->throttling);
+                        match_pdomain = &(match_pthrottling->domain_info);
+                        if (match_pdomain->domain != pdomain->domain)
+                                continue;
+
+                        /*
+                         * If some CPUS have the same domain, they
+                         * will have the same shared_cpu_map.
+                         */
+                        match_pthrottling->shared_cpu_map =
+                                pthrottling->shared_cpu_map;
+                }
+        }
+
+err_ret:
+        for_each_possible_cpu(i) {
+                pr = processors[i];
+                if (!pr)
+                        continue;
+
+                /*
+                 * Assume no coordination on any error parsing domain info.
+                 * The coordination type will be forced as SW_ALL.
+                 */
+                if (retval) {
+                        pthrottling = &(pr->throttling);
+                        cpus_clear(pthrottling->shared_cpu_map);
+                        cpu_set(i, pthrottling->shared_cpu_map);
+                        pthrottling->shared_type = DOMAIN_COORD_TYPE_SW_ALL;
+                }
+        }
+
+        return retval;
+}
+
+/*
+ * Update the T-state coordination after the _TSD
+ * data for all cpus is obtained.
+ */
+void acpi_processor_throttling_init(void)
+{
+        if (acpi_processor_update_tsd_coord())
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                        "Assume no T-state coordination\n"));
+
+        return;
+}
+
+static int acpi_processor_throttling_notifier(unsigned long event, void *data)
+{
+        struct throttling_tstate *p_tstate = data;
+        struct acpi_processor *pr;
+        unsigned int cpu ;
+        int target_state;
+        struct acpi_processor_limit *p_limit;
+        struct acpi_processor_throttling *p_throttling;
+
+        cpu = p_tstate->cpu;
+        pr = processors[cpu];
+        if (!pr) {
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Invalid pr pointer\n"));
+                return 0;
+        }
+        if (!pr->flags.throttling) {
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Throttling control is "
+                                "unsupported on CPU %d\n", cpu));
+                return 0;
+        }
+        target_state = p_tstate->target_state;
+        p_throttling = &(pr->throttling);
+        switch (event) {
+        case THROTTLING_PRECHANGE:
+                /*
+                 * Prechange event is used to choose one proper t-state,
+                 * which meets the limits of thermal, user and _TPC.
+                 */
+                p_limit = &pr->limit;
+                if (p_limit->thermal.tx > target_state)
+                        target_state = p_limit->thermal.tx;
+                if (p_limit->user.tx > target_state)
+                        target_state = p_limit->user.tx;
+                if (pr->throttling_platform_limit > target_state)
+                        target_state = pr->throttling_platform_limit;
+                if (target_state >= p_throttling->state_count) {
+                        printk(KERN_WARNING
+                                "Exceed the limit of T-state \n");
+                        target_state = p_throttling->state_count - 1;
+                }
+                p_tstate->target_state = target_state;
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "PreChange Event:"
+                                "target T-state of CPU %d is T%d\n",
+                                cpu, target_state));
+                break;
+        case THROTTLING_POSTCHANGE:
+                /*
+                 * Postchange event is only used to update the
+                 * T-state flag of acpi_processor_throttling.
+                 */
+                p_throttling->state = target_state;
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "PostChange Event:"
+                                "CPU %d is switched to T%d\n",
+                                cpu, target_state));
+                break;
+        default:
+                printk(KERN_WARNING
+                        "Unsupported Throttling notifier event\n");
+                break;
+        }
+
+        return 0;
+}
+
 /*
  * _TPC - Throttling Present Capabilities
  */
@@ -293,6 +513,10 @@ static int acpi_processor_get_tsd(struct acpi_processor *pr)
         struct acpi_buffer state = { 0, NULL };
         union acpi_object *tsd = NULL;
         struct acpi_tsd_package *pdomain;
+        struct acpi_processor_throttling *pthrottling;
+
+        pthrottling = &pr->throttling;
+        pthrottling->tsd_valid_flag = 0;
 
         status = acpi_evaluate_object(pr->handle, "_TSD", NULL, &buffer);
         if (ACPI_FAILURE(status)) {
@@ -340,6 +564,22 @@ static int acpi_processor_get_tsd(struct acpi_processor *pr)
                 goto end;
         }
 
+        pthrottling = &pr->throttling;
+        pthrottling->tsd_valid_flag = 1;
+        pthrottling->shared_type = pdomain->coord_type;
+        cpu_set(pr->id, pthrottling->shared_cpu_map);
+        /*
+         * If the coordination type is not defined in ACPI spec,
+         * the tsd_valid_flag will be clear and coordination type
+         * will be forecd as DOMAIN_COORD_TYPE_SW_ALL.
+         */
+        if (pdomain->coord_type != DOMAIN_COORD_TYPE_SW_ALL &&
+                pdomain->coord_type != DOMAIN_COORD_TYPE_SW_ANY &&
+                pdomain->coord_type != DOMAIN_COORD_TYPE_HW_ALL) {
+                pthrottling->tsd_valid_flag = 0;
+                pthrottling->shared_type = DOMAIN_COORD_TYPE_SW_ALL;
+        }
+
       end:
         kfree(buffer.pointer);
         return result;
@@ -589,6 +829,11 @@ static int acpi_processor_get_throttling(struct acpi_processor *pr)
         cpumask_t saved_mask;
         int ret;
 
+        if (!pr)
+                return -EINVAL;
+
+        if (!pr->flags.throttling)
+                return -ENODEV;
         /*
          * Migrate task to the cpu pointed by pr.
          */
@@ -742,13 +987,92 @@ static int acpi_processor_set_throttling_ptc(struct acpi_processor *pr,
 int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
 {
         cpumask_t saved_mask;
-        int ret;
+        int ret = 0;
+        unsigned int i;
+        struct acpi_processor *match_pr;
+        struct acpi_processor_throttling *p_throttling;
+        struct throttling_tstate t_state;
+        cpumask_t online_throttling_cpus;
+
+        if (!pr)
+                return -EINVAL;
+
+        if (!pr->flags.throttling)
+                return -ENODEV;
+
+        if ((state < 0) || (state > (pr->throttling.state_count - 1)))
+                return -EINVAL;
+
+        saved_mask = current->cpus_allowed;
+        t_state.target_state = state;
+        p_throttling = &(pr->throttling);
+        cpus_and(online_throttling_cpus, cpu_online_map,
+                        p_throttling->shared_cpu_map);
         /*
-         * Migrate task to the cpu pointed by pr.
+         * The throttling notifier will be called for every
+         * affected cpu in order to get one proper T-state.
+         * The notifier event is THROTTLING_PRECHANGE.
          */
-        saved_mask = current->cpus_allowed;
-        set_cpus_allowed(current, cpumask_of_cpu(pr->id));
-        ret = pr->throttling.acpi_processor_set_throttling(pr, state);
+        for_each_cpu_mask(i, online_throttling_cpus) {
+                t_state.cpu = i;
+                acpi_processor_throttling_notifier(THROTTLING_PRECHANGE,
+                                                        &t_state);
+        }
+        /*
+         * The function of acpi_processor_set_throttling will be called
+         * to switch T-state. If the coordination type is SW_ALL or HW_ALL,
+         * it is necessary to call it for every affected cpu. Otherwise
+         * it can be called only for the cpu pointed by pr.
+         */
+        if (p_throttling->shared_type == DOMAIN_COORD_TYPE_SW_ANY) {
+                set_cpus_allowed(current, cpumask_of_cpu(pr->id));
+                ret = p_throttling->acpi_processor_set_throttling(pr,
+                                                t_state.target_state);
+        } else {
+                /*
+                 * When the T-state coordination is SW_ALL or HW_ALL,
+                 * it is necessary to set T-state for every affected
+                 * cpus.
+                 */
+                for_each_cpu_mask(i, online_throttling_cpus) {
+                        match_pr = processors[i];
+                        /*
+                         * If the pointer is invalid, we will report the
+                         * error message and continue.
+                         */
+                        if (!match_pr) {
+                                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                                        "Invalid Pointer for CPU %d\n", i));
+                                continue;
+                        }
+                        /*
+                         * If the throttling control is unsupported on CPU i,
+                         * we will report the error message and continue.
+                         */
+                        if (!match_pr->flags.throttling) {
+                                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                                        "Throttling Controll is unsupported "
+                                        "on CPU %d\n", i));
+                                continue;
+                        }
+                        t_state.cpu = i;
+                        set_cpus_allowed(current, cpumask_of_cpu(i));
+                        ret = match_pr->throttling.
+                                acpi_processor_set_throttling(
+                                match_pr, t_state.target_state);
+                }
+        }
+        /*
+         * After the set_throttling is called, the
+         * throttling notifier is called for every
+         * affected cpu to update the T-states.
+         * The notifier event is THROTTLING_POSTCHANGE
+         */
+        for_each_cpu_mask(i, online_throttling_cpus) {
+                t_state.cpu = i;
+                acpi_processor_throttling_notifier(THROTTLING_POSTCHANGE,
+                                                        &t_state);
+        }
         /* restore the previous state */
         set_cpus_allowed(current, saved_mask);
         return ret;
@@ -757,6 +1081,7 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
 int acpi_processor_get_throttling_info(struct acpi_processor *pr)
 {
         int result = 0;
+        struct acpi_processor_throttling *pthrottling;
 
         ACPI_DEBUG_PRINT((ACPI_DB_INFO,
                           "pblk_address[0x%08x] duty_offset[%d] duty_width[%d]\n",
@@ -788,7 +1113,16 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr)
                     &acpi_processor_set_throttling_ptc;
         }
 
-        acpi_processor_get_tsd(pr);
+        /*
+         * If TSD package for one CPU can't be parsed successfully, it means
+         * that this CPU will have no coordination with other CPUs.
+         */
+        if (acpi_processor_get_tsd(pr)) {
+                pthrottling = &pr->throttling;
+                pthrottling->tsd_valid_flag = 0;
+                cpu_set(pr->id, pthrottling->shared_cpu_map);
+                pthrottling->shared_type = DOMAIN_COORD_TYPE_SW_ALL;
+        }
 
         /*
          * PIIX4 Errata: We don't support throttling on the original PIIX4.
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index f136c7d3b3c2..1194105cc3ca 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -888,7 +888,7 @@ static void acpi_charger_remove(struct acpi_sbs *sbs)
 #endif
 }
 
-void acpi_sbs_callback(void *context)
+static void acpi_sbs_callback(void *context)
 {
         int id;
         struct acpi_sbs *sbs = context;
diff --git a/drivers/acpi/sbshc.c b/drivers/acpi/sbshc.c
index fd40b6a1d639..ae9a90438e2f 100644
--- a/drivers/acpi/sbshc.c
+++ b/drivers/acpi/sbshc.c
@@ -111,8 +111,8 @@ static int wait_transaction_complete(struct acpi_smb_hc *hc, int timeout)
                 return -ETIME;
 }
 
-int acpi_smbus_transaction(struct acpi_smb_hc *hc, u8 protocol, u8 address,
-                    u8 command, u8 *data, u8 length)
+static int acpi_smbus_transaction(struct acpi_smb_hc *hc, u8 protocol,
+                                  u8 address, u8 command, u8 *data, u8 length)
 {
         int ret = -EFAULT, i;
         u8 temp, sz = 0;
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index d9d531cce27f..3fac011f9cf9 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -59,7 +59,7 @@ static int create_modalias(struct acpi_device *acpi_dev, char *modalias,
                         count = snprintf(&modalias[len], size, "%s:",
                                          cid_list->id[i].value);
                         if (count < 0 || count >= size) {
-                                printk(KERN_ERR "acpi: %s cid[%i] exceeds event buffer size",
+                                printk(KERN_ERR PREFIX "%s cid[%i] exceeds event buffer size",
                                        acpi_dev->pnp.device_name, i);
                                 break;
                         }
@@ -453,7 +453,7 @@ static int acpi_device_register(struct acpi_device *device,
         device->dev.release = &acpi_device_release;
         result = device_add(&device->dev);
         if(result) {
-                printk("Error adding device %s", device->dev.bus_id);
+                printk(KERN_ERR PREFIX "Error adding device %s", device->dev.bus_id);
                 goto end;
         }
 
@@ -941,6 +941,15 @@ static int acpi_bay_match(struct acpi_device *device){
         return -ENODEV;
 }
 
+/*
+ * acpi_dock_match - see if a device has a _DCK method
+ */
+static int acpi_dock_match(struct acpi_device *device)
+{
+        acpi_handle tmp;
+        return acpi_get_handle(device->handle, "_DCK", &tmp);
+}
+
 static void acpi_device_set_id(struct acpi_device *device,
                                struct acpi_device *parent, acpi_handle handle,
                                int type)
@@ -950,13 +959,14 @@ static void acpi_device_set_id(struct acpi_device *device,
         char *hid = NULL;
         char *uid = NULL;
         struct acpi_compatible_id_list *cid_list = NULL;
+        const char *cid_add = NULL;
         acpi_status status;
 
         switch (type) {
         case ACPI_BUS_TYPE_DEVICE:
                 status = acpi_get_object_info(handle, &buffer);
                 if (ACPI_FAILURE(status)) {
-                        printk("%s: Error reading device info\n", __FUNCTION__);
+                        printk(KERN_ERR PREFIX "%s: Error reading device info\n", __FUNCTION__);
                         return;
                 }
 
@@ -972,15 +982,18 @@ static void acpi_device_set_id(struct acpi_device *device,
                         device->flags.bus_address = 1;
                 }
 
-                if(!(info->valid & (ACPI_VALID_HID | ACPI_VALID_CID))){
-                        status = acpi_video_bus_match(device);
-                        if(ACPI_SUCCESS(status))
-                                hid = ACPI_VIDEO_HID;
+                /* If we have a video/bay/dock device, add our selfdefined
+                   HID to the CID list. Like that the video/bay/dock drivers
+                   will get autoloaded and the device might still match
+                   against another driver.
+                */
+                if (ACPI_SUCCESS(acpi_video_bus_match(device)))
+                        cid_add = ACPI_VIDEO_HID;
+                else if (ACPI_SUCCESS(acpi_bay_match(device)))
+                        cid_add = ACPI_BAY_HID;
+                else if (ACPI_SUCCESS(acpi_dock_match(device)))
+                        cid_add = ACPI_DOCK_HID;
 
-                        status = acpi_bay_match(device);
-                        if (ACPI_SUCCESS(status))
-                                hid = ACPI_BAY_HID;
-                }
                 break;
         case ACPI_BUS_TYPE_POWER:
                 hid = ACPI_POWER_HID;
@@ -1021,12 +1034,45 @@ static void acpi_device_set_id(struct acpi_device *device,
                 strcpy(device->pnp.unique_id, uid);
                 device->flags.unique_id = 1;
         }
-        if (cid_list) {
-                device->pnp.cid_list = kmalloc(cid_list->size, GFP_KERNEL);
-                if (device->pnp.cid_list)
-                        memcpy(device->pnp.cid_list, cid_list, cid_list->size);
-                else
-                        printk(KERN_ERR "Memory allocation error\n");
+        if (cid_list || cid_add) {
+                struct  acpi_compatible_id_list *list;
+                int size = 0;
+                int count = 0;
+
+                if (cid_list) {
+                        size = cid_list->size;
+                } else if (cid_add) {
+                        size = sizeof(struct acpi_compatible_id_list);
+                        cid_list = ACPI_ALLOCATE_ZEROED((acpi_size) size);
+                        if (!cid_list) {
+                                printk(KERN_ERR "Memory allocation error\n");
+                                kfree(buffer.pointer);
+                                return;
+                        } else {
+                                cid_list->count = 0;
+                                cid_list->size = size;
+                        }
+                }
+                if (cid_add)
+                        size += sizeof(struct acpi_compatible_id);
+                list = kmalloc(size, GFP_KERNEL);
+
+                if (list) {
+                        if (cid_list) {
+                                memcpy(list, cid_list, cid_list->size);
+                                count = cid_list->count;
+                        }
+                        if (cid_add) {
+                                strncpy(list->id[count].value, cid_add,
+                                        ACPI_MAX_CID_LENGTH);
+                                count++;
+                                device->flags.compatible_ids = 1;
+                        }
+                        list->size = size;
+                        list->count = count;
+                        device->pnp.cid_list = list;
+                } else
+                        printk(KERN_ERR PREFIX "Memory allocation error\n");
         }
 
         kfree(buffer.pointer);
@@ -1050,7 +1096,7 @@ static int acpi_device_set_context(struct acpi_device *device, int type)
                                           acpi_bus_data_handler, device);
 
                 if (ACPI_FAILURE(status)) {
-                        printk("Error attaching device data\n");
+                        printk(KERN_ERR PREFIX "Error attaching device data\n");
                         result = -ENODEV;
                 }
         }
@@ -1081,6 +1127,20 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
 }
 
 static int
+acpi_is_child_device(struct acpi_device *device,
+                        int (*matcher)(struct acpi_device *))
+{
+        int result = -ENODEV;
+
+        do {
+                if (ACPI_SUCCESS(matcher(device)))
+                        return AE_OK;
+        } while ((device = device->parent));
+
+        return result;
+}
+
+static int
 acpi_add_single_object(struct acpi_device **child,
                        struct acpi_device *parent, acpi_handle handle, int type,
                         struct acpi_bus_ops *ops)
@@ -1131,10 +1191,20 @@ acpi_add_single_object(struct acpi_device **child,
         case ACPI_BUS_TYPE_PROCESSOR:
         case ACPI_BUS_TYPE_DEVICE:
                 result = acpi_bus_get_status(device);
-                if (ACPI_FAILURE(result) || !device->status.present) {
-                        result = -ENOENT;
+                if (ACPI_FAILURE(result)) {
+                        result = -ENODEV;
                         goto end;
                 }
+                if (!device->status.present) {
+                        /* Bay and dock should be handled even if absent */
+                        if (!ACPI_SUCCESS(
+                             acpi_is_child_device(device, acpi_bay_match)) &&
+                            !ACPI_SUCCESS(
+                             acpi_is_child_device(device, acpi_dock_match))) {
+                                        result = -ENODEV;
+                                        goto end;
+                        }
+                }
                 break;
         default:
                 STRUCT_TO_INT(device->status) =
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index 485de1347075..293a1cbb47c0 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -170,7 +170,7 @@ static int acpi_pm_enter(suspend_state_t pm_state)
         /* Reprogram control registers and execute _BFS */
         acpi_leave_sleep_state_prep(acpi_state);
 
-        /* ACPI 3.0 specs (P62) says that it's the responsabilty
+        /* ACPI 3.0 specs (P62) says that it's the responsibility
          * of the OSPM to clear the status bit [ implying that the
          * POWER_BUTTON event should not reach userspace ]
          */
@@ -472,11 +472,20 @@ int acpi_pm_device_sleep_state(struct device *dev, int wake, int *d_min_p)
         if (acpi_target_sleep_state == ACPI_STATE_S0 ||
             (wake && adev->wakeup.state.enabled &&
              adev->wakeup.sleep_state <= acpi_target_sleep_state)) {
+                acpi_status status;
+
                 acpi_method[3] = 'W';
-                acpi_evaluate_integer(handle, acpi_method, NULL, &d_max);
-                /* Sanity check */
-                if (d_max < d_min)
+                status = acpi_evaluate_integer(handle, acpi_method, NULL,
+                                                &d_max);
+                if (ACPI_FAILURE(status)) {
+                        d_max = d_min;
+                } else if (d_max < d_min) {
+                        /* Warn the user of the broken DSDT */
+                        printk(KERN_WARNING "ACPI: Wrong value from %s\n",
+                                acpi_method);
+                        /* Sanitize it */
                         d_min = d_max;
+                }
         }
 
         if (d_min_p)
diff --git a/drivers/acpi/sleep/proc.c b/drivers/acpi/sleep/proc.c
index 1538355c266b..f8df5217d477 100644
--- a/drivers/acpi/sleep/proc.c
+++ b/drivers/acpi/sleep/proc.c
@@ -178,6 +178,9 @@ static int get_date_field(char **p, u32 * value)
          * Try to find delimeter, only to insert null.  The end of the
          * string won't have one, but is still valid.
          */
+        if (*p == NULL)
+                return result;
+
         next = strpbrk(*p, "- :");
         if (next)
                 *next++ = '\0';
@@ -190,6 +193,8 @@ static int get_date_field(char **p, u32 * value)
 
         if (next)
                 *p = next;
+        else
+                *p = NULL;
 
         return result;
 }
@@ -251,27 +256,6 @@ acpi_system_write_alarm(struct file *file,
         if ((result = get_date_field(&p, &sec)))
                 goto end;
 
-        if (sec > 59) {
-                min += 1;
-                sec -= 60;
-        }
-        if (min > 59) {
-                hr += 1;
-                min -= 60;
-        }
-        if (hr > 23) {
-                day += 1;
-                hr -= 24;
-        }
-        if (day > 31) {
-                mo += 1;
-                day -= 31;
-        }
-        if (mo > 12) {
-                yr += 1;
-                mo -= 12;
-        }
-
         spin_lock_irq(&rtc_lock);
 
         rtc_control = CMOS_READ(RTC_CONTROL);
@@ -288,24 +272,24 @@ acpi_system_write_alarm(struct file *file,
         spin_unlock_irq(&rtc_lock);
 
         if (sec > 59) {
-                min++;
-                sec -= 60;
+                min += sec/60;
+                sec = sec%60;
         }
         if (min > 59) {
-                hr++;
-                min -= 60;
+                hr += min/60;
+                min = min%60;
         }
         if (hr > 23) {
-                day++;
-                hr -= 24;
+                day += hr/24;
+                hr = hr%24;
         }
         if (day > 31) {
-                mo++;
-                day -= 31;
+                mo += day/32;
+                day = day%32;
         }
         if (mo > 12) {
-                yr++;
-                mo -= 12;
+                yr += mo/13;
+                mo = mo%13;
         }
 
         spin_lock_irq(&rtc_lock);
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 5ffe0ea18967..55cf4c05bb74 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -40,6 +40,8 @@ ACPI_MODULE_NAME("system");
 #define ACPI_SYSTEM_CLASS               "system"
 #define ACPI_SYSTEM_DEVICE_NAME         "System"
 
+u32 acpi_irq_handled;
+
 /*
  * Make ACPICA version work as module param
  */
@@ -166,6 +168,212 @@ static int acpi_system_sysfs_init(void)
         return 0;
 }
 
+/*
+ * Detailed ACPI IRQ counters in /sys/firmware/acpi/interrupts/
+ * See Documentation/ABI/testing/sysfs-firmware-acpi
+ */
+
+#define COUNT_GPE 0
+#define COUNT_SCI 1     /* acpi_irq_handled */
+#define COUNT_ERROR 2   /* other */
+#define NUM_COUNTERS_EXTRA 3
+
+static u32 *all_counters;
+static u32 num_gpes;
+static u32 num_counters;
+static struct attribute **all_attrs;
+static u32 acpi_gpe_count;
+
+static struct attribute_group interrupt_stats_attr_group = {
+        .name = "interrupts",
+};
+static struct kobj_attribute *counter_attrs;
+
+static int count_num_gpes(void)
+{
+        int count = 0;
+        struct acpi_gpe_xrupt_info *gpe_xrupt_info;
+        struct acpi_gpe_block_info *gpe_block;
+        acpi_cpu_flags flags;
+
+        flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
+
+        gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
+        while (gpe_xrupt_info) {
+                gpe_block = gpe_xrupt_info->gpe_block_list_head;
+                while (gpe_block) {
+                        count += gpe_block->register_count *
+                            ACPI_GPE_REGISTER_WIDTH;
+                        gpe_block = gpe_block->next;
+                }
+                gpe_xrupt_info = gpe_xrupt_info->next;
+        }
+        acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+
+        return count;
+}
+
+static void delete_gpe_attr_array(void)
+{
+        u32 *tmp = all_counters;
+
+        all_counters = NULL;
+        kfree(tmp);
+
+        if (counter_attrs) {
+                int i;
+
+                for (i = 0; i < num_gpes; i++)
+                        kfree(counter_attrs[i].attr.name);
+
+                kfree(counter_attrs);
+        }
+        kfree(all_attrs);
+
+        return;
+}
+
+void acpi_os_gpe_count(u32 gpe_number)
+{
+        acpi_gpe_count++;
+
+        if (!all_counters)
+                return;
+
+        if (gpe_number < num_gpes)
+                all_counters[gpe_number]++;
+        else
+                all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR]++;
+
+        return;
+}
+
+void acpi_os_fixed_event_count(u32 event_number)
+{
+        if (!all_counters)
+                return;
+
+        if (event_number < ACPI_NUM_FIXED_EVENTS)
+                all_counters[num_gpes + event_number]++;
+        else
+                all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR]++;
+
+        return;
+}
+
+static ssize_t counter_show(struct kobject *kobj,
+        struct kobj_attribute *attr, char *buf)
+{
+        all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI] =
+                acpi_irq_handled;
+        all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE] =
+                acpi_gpe_count;
+
+        return sprintf(buf, "%d\n", all_counters[attr - counter_attrs]);
+}
+
+/*
+ * counter_set() sets the specified counter.
+ * setting the total "sci" file to any value clears all counters.
+ */
+static ssize_t counter_set(struct kobject *kobj,
+        struct kobj_attribute *attr, const char *buf, size_t size)
+{
+        int index = attr - counter_attrs;
+
+        if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
+                int i;
+                for (i = 0; i < num_counters; ++i)
+                        all_counters[i] = 0;
+                acpi_gpe_count = 0;
+                acpi_irq_handled = 0;
+
+        } else
+                all_counters[index] = strtoul(buf, NULL, 0);
+
+        return size;
+}
+
+void acpi_irq_stats_init(void)
+{
+        int i;
+
+        if (all_counters)
+                return;
+
+        num_gpes = count_num_gpes();
+        num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
+
+        all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1),
+                        GFP_KERNEL);
+        if (all_attrs == NULL)
+                return;
+
+        all_counters = kzalloc(sizeof(u32) * (num_counters), GFP_KERNEL);
+        if (all_counters == NULL)
+                goto fail;
+
+        counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters),
+                        GFP_KERNEL);
+        if (counter_attrs == NULL)
+                goto fail;
+
+        for (i = 0; i < num_counters; ++i) {
+                char buffer[10];
+                char *name;
+
+                if (i < num_gpes)
+                        sprintf(buffer, "gpe%02X", i);
+                else if (i == num_gpes + ACPI_EVENT_PMTIMER)
+                        sprintf(buffer, "ff_pmtimer");
+                else if (i == num_gpes + ACPI_EVENT_GLOBAL)
+                        sprintf(buffer, "ff_gbl_lock");
+                else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
+                        sprintf(buffer, "ff_pwr_btn");
+                else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
+                        sprintf(buffer, "ff_slp_btn");
+                else if (i == num_gpes + ACPI_EVENT_RTC)
+                        sprintf(buffer, "ff_rt_clk");
+                else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
+                        sprintf(buffer, "gpe_all");
+                else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
+                        sprintf(buffer, "sci");
+                else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
+                        sprintf(buffer, "error");
+                else
+                        sprintf(buffer, "bug%02X", i);
+
+                name = kzalloc(strlen(buffer) + 1, GFP_KERNEL);
+                if (name == NULL)
+                        goto fail;
+                strncpy(name, buffer, strlen(buffer) + 1);
+
+                counter_attrs[i].attr.name = name;
+                counter_attrs[i].attr.mode = 0644;
+                counter_attrs[i].show = counter_show;
+                counter_attrs[i].store = counter_set;
+
+                all_attrs[i] = &counter_attrs[i].attr;
+        }
+
+        interrupt_stats_attr_group.attrs = all_attrs;
+        if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
+                return;
+
+fail:
+        delete_gpe_attr_array();
+        return;
+}
+
+static void __exit interrupt_stats_exit(void)
+{
+        sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);
+
+        delete_gpe_attr_array();
+
+        return;
+}
+
 /* --------------------------------------------------------------------------
                               FS Interface (/proc)
    -------------------------------------------------------------------------- */
diff --git a/drivers/acpi/tables/Makefile b/drivers/acpi/tables/Makefile
index 0a7d7afac255..7385efa61622 100644
--- a/drivers/acpi/tables/Makefile
+++ b/drivers/acpi/tables/Makefile
@@ -2,6 +2,6 @@
 # Makefile for all Linux ACPI interpreter subdirectories
 #
 
-obj-y := tbxface.o tbinstal.o  tbutils.o tbfind.o tbfadt.o
+obj-y := tbxface.o tbinstal.o tbutils.o tbfind.o tbfadt.o tbxfroot.o
 
 EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/tables/tbxfroot.c b/drivers/acpi/tables/tbxfroot.c
index cf8fa514189f..9ecb4b6c1e7d 100644
--- a/drivers/acpi/tables/tbxfroot.c
+++ b/drivers/acpi/tables/tbxfroot.c
@@ -100,7 +100,7 @@ static acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp)
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_tb_find_rsdp
+ * FUNCTION:    acpi_find_root_pointer
  *
  * PARAMETERS:  table_address           - Where the table pointer is returned
  *
@@ -219,8 +219,6 @@ acpi_status acpi_find_root_pointer(acpi_native_uint * table_address)
         return_ACPI_STATUS(AE_NOT_FOUND);
 }
 
-ACPI_EXPORT_SYMBOL(acpi_find_root_pointer)
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_tb_scan_memory_for_rsdp
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 5f79b4451212..8d4b79b4f933 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -43,7 +43,7 @@
 #include <linux/seq_file.h>
 #include <linux/reboot.h>
 #include <asm/uaccess.h>
-
+#include <linux/thermal.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 
@@ -65,9 +65,6 @@
 #define ACPI_THERMAL_MAX_ACTIVE 10
 #define ACPI_THERMAL_MAX_LIMIT_STR_LEN 65
 
-#define KELVIN_TO_CELSIUS(t)    (long)(((long)t-2732>=0) ? ((long)t-2732+5)/10 : ((long)t-2732-5)/10)
-#define CELSIUS_TO_KELVIN(t)    ((t+273)*10)
-
 #define _COMPONENT              ACPI_THERMAL_COMPONENT
 ACPI_MODULE_NAME("thermal");
 
@@ -195,6 +192,8 @@ struct acpi_thermal {
         struct acpi_thermal_trips trips;
         struct acpi_handle_list devices;
         struct timer_list timer;
+        struct thermal_zone_device *thermal_zone;
+        int tz_enabled;
         struct mutex lock;
 };
 
@@ -321,178 +320,226 @@ static int acpi_thermal_set_cooling_mode(struct acpi_thermal *tz, int mode)
         return 0;
 }
 
-static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
-{
-        acpi_status status = AE_OK;
-        int i = 0;
+#define ACPI_TRIPS_CRITICAL     0x01
+#define ACPI_TRIPS_HOT          0x02
+#define ACPI_TRIPS_PASSIVE      0x04
+#define ACPI_TRIPS_ACTIVE       0x08
+#define ACPI_TRIPS_DEVICES      0x10
 
+#define ACPI_TRIPS_REFRESH_THRESHOLDS   (ACPI_TRIPS_PASSIVE | ACPI_TRIPS_ACTIVE)
+#define ACPI_TRIPS_REFRESH_DEVICES      ACPI_TRIPS_DEVICES
 
-        if (!tz)
-                return -EINVAL;
+#define ACPI_TRIPS_INIT      (ACPI_TRIPS_CRITICAL | ACPI_TRIPS_HOT |    \
+                              ACPI_TRIPS_PASSIVE | ACPI_TRIPS_ACTIVE |  \
+                              ACPI_TRIPS_DEVICES)
 
-        /* Critical Shutdown (required) */
-
-        status = acpi_evaluate_integer(tz->device->handle, "_CRT", NULL,
-                                       &tz->trips.critical.temperature);
-        if (ACPI_FAILURE(status)) {
-                tz->trips.critical.flags.valid = 0;
-                ACPI_EXCEPTION((AE_INFO, status, "No critical threshold"));
-                return -ENODEV;
-        } else {
-                tz->trips.critical.flags.valid = 1;
-                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                                  "Found critical threshold [%lu]\n",
-                                  tz->trips.critical.temperature));
-        }
+/*
+ * This exception is thrown out in two cases:
+ * 1.An invalid trip point becomes invalid or a valid trip point becomes invalid
+ *   when re-evaluating the AML code.
+ * 2.TODO: Devices listed in _PSL, _ALx, _TZD may change.
+ *   We need to re-bind the cooling devices of a thermal zone when this occurs.
+ */
+#define ACPI_THERMAL_TRIPS_EXCEPTION(flags, str)        \
+do {    \
+        if (flags != ACPI_TRIPS_INIT)   \
+                ACPI_EXCEPTION((AE_INFO, AE_ERROR,      \
+                "ACPI thermal trip point %s changed\n"  \
+                "Please send acpidump to linux-acpi@vger.kernel.org\n", str)); \
+} while (0)
+
+static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
+{
+        acpi_status status = AE_OK;
+        struct acpi_handle_list devices;
+        int valid = 0;
+        int i;
 
-        if (tz->trips.critical.flags.valid == 1) {
-                if (crt == -1) {
+        /* Critical Shutdown (required) */
+        if (flag & ACPI_TRIPS_CRITICAL) {
+                status = acpi_evaluate_integer(tz->device->handle,
+                                "_CRT", NULL, &tz->trips.critical.temperature);
+                if (ACPI_FAILURE(status)) {
                         tz->trips.critical.flags.valid = 0;
-                } else if (crt > 0) {
-                        unsigned long crt_k = CELSIUS_TO_KELVIN(crt);
-
-                        /*
-                         * Allow override to lower critical threshold
-                         */
-                        if (crt_k < tz->trips.critical.temperature)
-                                tz->trips.critical.temperature = crt_k;
+                        ACPI_EXCEPTION((AE_INFO, status,
+                                        "No critical threshold"));
+                        return -ENODEV;
+                } else {
+                        tz->trips.critical.flags.valid = 1;
+                        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                                        "Found critical threshold [%lu]\n",
+                                        tz->trips.critical.temperature));
+                }
+                if (tz->trips.critical.flags.valid == 1) {
+                        if (crt == -1) {
+                                tz->trips.critical.flags.valid = 0;
+                        } else if (crt > 0) {
+                                unsigned long crt_k = CELSIUS_TO_KELVIN(crt);
+                                /*
+                                 * Allow override to lower critical threshold
+                                 */
+                                if (crt_k < tz->trips.critical.temperature)
+                                        tz->trips.critical.temperature = crt_k;
+                        }
                 }
         }
 
         /* Critical Sleep (optional) */
-
-        status =
-            acpi_evaluate_integer(tz->device->handle, "_HOT", NULL,
-                                  &tz->trips.hot.temperature);
-        if (ACPI_FAILURE(status)) {
-                tz->trips.hot.flags.valid = 0;
-                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No hot threshold\n"));
-        } else {
-                tz->trips.hot.flags.valid = 1;
-                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found hot threshold [%lu]\n",
-                                  tz->trips.hot.temperature));
-        }
-
-        /* Passive: Processors (optional) */
-
-        if (psv == -1) {
-                status = AE_SUPPORT;
-        } else if (psv > 0) {
-                tz->trips.passive.temperature = CELSIUS_TO_KELVIN(psv);
-                status = AE_OK;
-        } else {
+        if (flag & ACPI_TRIPS_HOT) {
                 status = acpi_evaluate_integer(tz->device->handle,
-                        "_PSV", NULL, &tz->trips.passive.temperature);
+                                "_HOT", NULL, &tz->trips.hot.temperature);
+                if (ACPI_FAILURE(status)) {
+                        tz->trips.hot.flags.valid = 0;
+                        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                                        "No hot threshold\n"));
+                } else {
+                        tz->trips.hot.flags.valid = 1;
+                        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                                        "Found hot threshold [%lu]\n",
+                                        tz->trips.critical.temperature));
+                }
         }
 
-        if (ACPI_FAILURE(status)) {
-                tz->trips.passive.flags.valid = 0;
-                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No passive threshold\n"));
-        } else {
-                tz->trips.passive.flags.valid = 1;
-
-                status =
-                    acpi_evaluate_integer(tz->device->handle, "_TC1", NULL,
-                                          &tz->trips.passive.tc1);
-                if (ACPI_FAILURE(status))
-                        tz->trips.passive.flags.valid = 0;
-
-                status =
-                    acpi_evaluate_integer(tz->device->handle, "_TC2", NULL,
-                                          &tz->trips.passive.tc2);
-                if (ACPI_FAILURE(status))
-                        tz->trips.passive.flags.valid = 0;
+        /* Passive (optional) */
+        if (flag & ACPI_TRIPS_PASSIVE) {
+                valid = tz->trips.passive.flags.valid;
+                if (psv == -1) {
+                        status = AE_SUPPORT;
+                } else if (psv > 0) {
+                        tz->trips.passive.temperature = CELSIUS_TO_KELVIN(psv);
+                        status = AE_OK;
+                } else {
+                        status = acpi_evaluate_integer(tz->device->handle,
+                                "_PSV", NULL, &tz->trips.passive.temperature);
+                }
 
-                status =
-                    acpi_evaluate_integer(tz->device->handle, "_TSP", NULL,
-                                          &tz->trips.passive.tsp);
                 if (ACPI_FAILURE(status))
                         tz->trips.passive.flags.valid = 0;
-
-                status =
-                    acpi_evaluate_reference(tz->device->handle, "_PSL", NULL,
-                                            &tz->trips.passive.devices);
+                else {
+                        tz->trips.passive.flags.valid = 1;
+                        if (flag == ACPI_TRIPS_INIT) {
+                                status = acpi_evaluate_integer(
+                                                tz->device->handle, "_TC1",
+                                                NULL, &tz->trips.passive.tc1);
+                                if (ACPI_FAILURE(status))
+                                        tz->trips.passive.flags.valid = 0;
+                                status = acpi_evaluate_integer(
+                                                tz->device->handle, "_TC2",
+                                                NULL, &tz->trips.passive.tc2);
+                                if (ACPI_FAILURE(status))
+                                        tz->trips.passive.flags.valid = 0;
+                                status = acpi_evaluate_integer(
+                                                tz->device->handle, "_TSP",
+                                                NULL, &tz->trips.passive.tsp);
+                                if (ACPI_FAILURE(status))
+                                        tz->trips.passive.flags.valid = 0;
+                        }
+                }
+        }
+        if ((flag & ACPI_TRIPS_DEVICES) && tz->trips.passive.flags.valid) {
+                memset(&devices, 0, sizeof(struct acpi_handle_list));
+                status = acpi_evaluate_reference(tz->device->handle, "_PSL",
+                                                        NULL, &devices);
                 if (ACPI_FAILURE(status))
                         tz->trips.passive.flags.valid = 0;
-
-                if (!tz->trips.passive.flags.valid)
-                        printk(KERN_WARNING PREFIX "Invalid passive threshold\n");
                 else
-                        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                                          "Found passive threshold [%lu]\n",
-                                          tz->trips.passive.temperature));
-        }
+                        tz->trips.passive.flags.valid = 1;
 
-        /* Active: Fans, etc. (optional) */
+                if (memcmp(&tz->trips.passive.devices, &devices,
+                                sizeof(struct acpi_handle_list))) {
+                        memcpy(&tz->trips.passive.devices, &devices,
+                                sizeof(struct acpi_handle_list));
+                        ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device");
+                }
+        }
+        if ((flag & ACPI_TRIPS_PASSIVE) || (flag & ACPI_TRIPS_DEVICES)) {
+                if (valid != tz->trips.passive.flags.valid)
+                                ACPI_THERMAL_TRIPS_EXCEPTION(flag, "state");
+        }
 
+        /* Active (optional) */
         for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
-
                 char name[5] = { '_', 'A', 'C', ('0' + i), '\0' };
+                valid = tz->trips.active[i].flags.valid;
 
                 if (act == -1)
-                        break;  /* disable all active trip points */
-
-                status = acpi_evaluate_integer(tz->device->handle,
-                        name, NULL, &tz->trips.active[i].temperature);
-
-                if (ACPI_FAILURE(status)) {
-                        if (i == 0)     /* no active trip points */
+                        break; /* disable all active trip points */
+
+                if (flag & ACPI_TRIPS_ACTIVE) {
+                        status = acpi_evaluate_integer(tz->device->handle,
+                                name, NULL, &tz->trips.active[i].temperature);
+                        if (ACPI_FAILURE(status)) {
+                                tz->trips.active[i].flags.valid = 0;
+                                if (i == 0)
+                                        break;
+                                if (act <= 0)
+                                        break;
+                                if (i == 1)
+                                        tz->trips.active[0].temperature =
+                                                CELSIUS_TO_KELVIN(act);
+                                else
+                                        /*
+                                         * Don't allow override higher than
+                                         * the next higher trip point
+                                         */
+                                        tz->trips.active[i - 1].temperature =
+                                                (tz->trips.active[i - 2].temperature <
+                                                CELSIUS_TO_KELVIN(act) ?
+                                                tz->trips.active[i - 2].temperature :
+                                                CELSIUS_TO_KELVIN(act));
                                 break;
-                        if (act <= 0)   /* no override requested */
-                                break;
-                        if (i == 1) {   /* 1 trip point */
-                                tz->trips.active[0].temperature =
-                                        CELSIUS_TO_KELVIN(act);
-                        } else {        /* multiple trips */
-                                /*
-                                 * Don't allow override higher than
-                                 * the next higher trip point
-                                 */
-                                tz->trips.active[i - 1].temperature =
-                                    (tz->trips.active[i - 2].temperature <
-                                        CELSIUS_TO_KELVIN(act) ?
-                                        tz->trips.active[i - 2].temperature :
-                                        CELSIUS_TO_KELVIN(act));
-                        }
-                        break;
+                        } else
+                                tz->trips.active[i].flags.valid = 1;
                 }
 
                 name[2] = 'L';
-                status =
-                    acpi_evaluate_reference(tz->device->handle, name, NULL,
-                                            &tz->trips.active[i].devices);
-                if (ACPI_SUCCESS(status)) {
-                        tz->trips.active[i].flags.valid = 1;
-                        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                                          "Found active threshold [%d]:[%lu]\n",
-                                          i, tz->trips.active[i].temperature));
-                } else
-                        ACPI_EXCEPTION((AE_INFO, status,
-                                        "Invalid active threshold [%d]", i));
+                if ((flag & ACPI_TRIPS_DEVICES) && tz->trips.active[i].flags.valid ) {
+                        memset(&devices, 0, sizeof(struct acpi_handle_list));
+                        status = acpi_evaluate_reference(tz->device->handle,
+                                                name, NULL, &devices);
+                        if (ACPI_FAILURE(status))
+                                tz->trips.active[i].flags.valid = 0;
+                        else
+                                tz->trips.active[i].flags.valid = 1;
+
+                        if (memcmp(&tz->trips.active[i].devices, &devices,
+                                        sizeof(struct acpi_handle_list))) {
+                                memcpy(&tz->trips.active[i].devices, &devices,
+                                        sizeof(struct acpi_handle_list));
+                                ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device");
+                        }
+                }
+                if ((flag & ACPI_TRIPS_ACTIVE) || (flag & ACPI_TRIPS_DEVICES))
+                        if (valid != tz->trips.active[i].flags.valid)
+                                ACPI_THERMAL_TRIPS_EXCEPTION(flag, "state");
+
+                if (!tz->trips.active[i].flags.valid)
+                        break;
+        }
+
+        if (flag & ACPI_TRIPS_DEVICES) {
+                memset(&devices, 0, sizeof(struct acpi_handle_list));
+                status = acpi_evaluate_reference(tz->device->handle, "_TZD",
+                                                NULL, &devices);
+                if (memcmp(&tz->devices, &devices,
+                                sizeof(struct acpi_handle_list))) {
+                        memcpy(&tz->devices, &devices,
+                                sizeof(struct acpi_handle_list));
+                        ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device");
+                }
         }
 
         return 0;
 }
 
-static int acpi_thermal_get_devices(struct acpi_thermal *tz)
+static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
 {
-        acpi_status status = AE_OK;
-
-
-        if (!tz)
-                return -EINVAL;
-
-        status =
-            acpi_evaluate_reference(tz->device->handle, "_TZD", NULL, &tz->devices);
-        if (ACPI_FAILURE(status))
-                return -ENODEV;
-
-        return 0;
+        return acpi_thermal_trips_update(tz, ACPI_TRIPS_INIT);
 }
 
 static int acpi_thermal_critical(struct acpi_thermal *tz)
 {
-        if (!tz || !tz->trips.critical.flags.valid || nocrt)
+        if (!tz || !tz->trips.critical.flags.valid)
                 return -EINVAL;
 
         if (tz->temperature >= tz->trips.critical.temperature) {
@@ -501,9 +548,6 @@ static int acpi_thermal_critical(struct acpi_thermal *tz)
         } else if (tz->trips.critical.flags.enabled)
                 tz->trips.critical.flags.enabled = 0;
 
-        printk(KERN_EMERG
-               "Critical temperature reached (%ld C), shutting down.\n",
-               KELVIN_TO_CELSIUS(tz->temperature));
         acpi_bus_generate_proc_event(tz->device, ACPI_THERMAL_NOTIFY_CRITICAL,
                                 tz->trips.critical.flags.enabled);
         acpi_bus_generate_netlink_event(tz->device->pnp.device_class,
@@ -511,14 +555,20 @@ static int acpi_thermal_critical(struct acpi_thermal *tz)
                                           ACPI_THERMAL_NOTIFY_CRITICAL,
                                           tz->trips.critical.flags.enabled);
 
-        orderly_poweroff(true);
+        /* take no action if nocrt is set */
+        if(!nocrt) {
+                printk(KERN_EMERG
+                        "Critical temperature reached (%ld C), shutting down.\n",
+                        KELVIN_TO_CELSIUS(tz->temperature));
+                orderly_poweroff(true);
+        }
 
         return 0;
 }
 
 static int acpi_thermal_hot(struct acpi_thermal *tz)
 {
-        if (!tz || !tz->trips.hot.flags.valid || nocrt)
+        if (!tz || !tz->trips.hot.flags.valid)
                 return -EINVAL;
 
         if (tz->temperature >= tz->trips.hot.temperature) {
@@ -534,7 +584,7 @@ static int acpi_thermal_hot(struct acpi_thermal *tz)
                                           ACPI_THERMAL_NOTIFY_HOT,
                                           tz->trips.hot.flags.enabled);
 
-        /* TBD: Call user-mode "sleep(S4)" function */
+        /* TBD: Call user-mode "sleep(S4)" function if nocrt is cleared */
 
         return 0;
 }
@@ -732,6 +782,9 @@ static void acpi_thermal_check(void *data)
         if (result)
                 goto unlock;
 
+        if (!tz->tz_enabled)
+                goto unlock;
+
         memset(&tz->state, 0, sizeof(tz->state));
 
         /*
@@ -825,6 +878,290 @@ static void acpi_thermal_check(void *data)
         mutex_unlock(&tz->lock);
 }
 
+/* sys I/F for generic thermal sysfs support */
+static int thermal_get_temp(struct thermal_zone_device *thermal, char *buf)
+{
+        struct acpi_thermal *tz = thermal->devdata;
+
+        if (!tz)
+                return -EINVAL;
+
+        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(tz->temperature));
+}
+
+static const char enabled[] = "kernel";
+static const char disabled[] = "user";
+static int thermal_get_mode(struct thermal_zone_device *thermal,
+                                char *buf)
+{
+        struct acpi_thermal *tz = thermal->devdata;
+
+        if (!tz)
+                return -EINVAL;
+
+        return sprintf(buf, "%s\n", tz->tz_enabled ?
+                        enabled : disabled);
+}
+
+static int thermal_set_mode(struct thermal_zone_device *thermal,
+                                const char *buf)
+{
+        struct acpi_thermal *tz = thermal->devdata;
+        int enable;
+
+        if (!tz)
+                return -EINVAL;
+
+        /*
+         * enable/disable thermal management from ACPI thermal driver
+         */
+        if (!strncmp(buf, enabled, sizeof enabled - 1))
+                enable = 1;
+        else if (!strncmp(buf, disabled, sizeof disabled - 1))
+                enable = 0;
+        else
+                return -EINVAL;
+
+        if (enable != tz->tz_enabled) {
+                tz->tz_enabled = enable;
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                        "%s ACPI thermal control\n",
+                        tz->tz_enabled ? enabled : disabled));
+                acpi_thermal_check(tz);
+        }
+        return 0;
+}
+
+static int thermal_get_trip_type(struct thermal_zone_device *thermal,
+                                 int trip, char *buf)
+{
+        struct acpi_thermal *tz = thermal->devdata;
+        int i;
+
+        if (!tz || trip < 0)
+                return -EINVAL;
+
+        if (tz->trips.critical.flags.valid) {
+                if (!trip)
+                        return sprintf(buf, "critical\n");
+                trip--;
+        }
+
+        if (tz->trips.hot.flags.valid) {
+                if (!trip)
+                        return sprintf(buf, "hot\n");
+                trip--;
+        }
+
+        if (tz->trips.passive.flags.valid) {
+                if (!trip)
+                        return sprintf(buf, "passive\n");
+                trip--;
+        }
+
+        for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE &&
+                tz->trips.active[i].flags.valid; i++) {
+                if (!trip)
+                        return sprintf(buf, "active%d\n", i);
+                trip--;
+        }
+
+        return -EINVAL;
+}
+
+static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
+                                 int trip, char *buf)
+{
+        struct acpi_thermal *tz = thermal->devdata;
+        int i;
+
+        if (!tz || trip < 0)
+                return -EINVAL;
+
+        if (tz->trips.critical.flags.valid) {
+                if (!trip)
+                        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(
+                                tz->trips.critical.temperature));
+                trip--;
+        }
+
+        if (tz->trips.hot.flags.valid) {
+                if (!trip)
+                        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(
+                                        tz->trips.hot.temperature));
+                trip--;
+        }
+
+        if (tz->trips.passive.flags.valid) {
+                if (!trip)
+                        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(
+                                        tz->trips.passive.temperature));
+                trip--;
+        }
+
+        for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE &&
+                tz->trips.active[i].flags.valid; i++) {
+                if (!trip)
+                        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(
+                                        tz->trips.active[i].temperature));
+                trip--;
+        }
+
+        return -EINVAL;
+}
+
+typedef int (*cb)(struct thermal_zone_device *, int,
+                  struct thermal_cooling_device *);
+static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
+                                        struct thermal_cooling_device *cdev,
+                                        cb action)
+{
+        struct acpi_device *device = cdev->devdata;
+        struct acpi_thermal *tz = thermal->devdata;
+        struct acpi_device *dev;
+        acpi_status status;
+        acpi_handle handle;
+        int i;
+        int j;
+        int trip = -1;
+        int result = 0;
+
+        if (tz->trips.critical.flags.valid)
+                trip++;
+
+        if (tz->trips.hot.flags.valid)
+                trip++;
+
+        if (tz->trips.passive.flags.valid) {
+                trip++;
+                for (i = 0; i < tz->trips.passive.devices.count;
+                    i++) {
+                        handle = tz->trips.passive.devices.handles[i];
+                        status = acpi_bus_get_device(handle, &dev);
+                        if (ACPI_SUCCESS(status) && (dev == device)) {
+                                result = action(thermal, trip, cdev);
+                                if (result)
+                                        goto failed;
+                        }
+                }
+        }
+
+        for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
+                if (!tz->trips.active[i].flags.valid)
+                        break;
+                trip++;
+                for (j = 0;
+                    j < tz->trips.active[i].devices.count;
+                    j++) {
+                        handle = tz->trips.active[i].devices.handles[j];
+                        status = acpi_bus_get_device(handle, &dev);
+                        if (ACPI_SUCCESS(status) && (dev == device)) {
+                                result = action(thermal, trip, cdev);
+                                if (result)
+                                        goto failed;
+                        }
+                }
+        }
+
+        for (i = 0; i < tz->devices.count; i++) {
+                handle = tz->devices.handles[i];
+                status = acpi_bus_get_device(handle, &dev);
+                if (ACPI_SUCCESS(status) && (dev == device)) {
+                        result = action(thermal, -1, cdev);
+                        if (result)
+                                goto failed;
+                }
+        }
+
+failed:
+        return result;
+}
+
+static int
+acpi_thermal_bind_cooling_device(struct thermal_zone_device *thermal,
+                                        struct thermal_cooling_device *cdev)
+{
+        return acpi_thermal_cooling_device_cb(thermal, cdev,
+                                thermal_zone_bind_cooling_device);
+}
+
+static int
+acpi_thermal_unbind_cooling_device(struct thermal_zone_device *thermal,
+                                        struct thermal_cooling_device *cdev)
+{
+        return acpi_thermal_cooling_device_cb(thermal, cdev,
+                                thermal_zone_unbind_cooling_device);
+}
+
+static struct thermal_zone_device_ops acpi_thermal_zone_ops = {
+        .bind = acpi_thermal_bind_cooling_device,
+        .unbind = acpi_thermal_unbind_cooling_device,
+        .get_temp = thermal_get_temp,
+        .get_mode = thermal_get_mode,
+        .set_mode = thermal_set_mode,
+        .get_trip_type = thermal_get_trip_type,
+        .get_trip_temp = thermal_get_trip_temp,
+};
+
+static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
+{
+        int trips = 0;
+        int result;
+        acpi_status status;
+        int i;
+
+        if (tz->trips.critical.flags.valid)
+                trips++;
+
+        if (tz->trips.hot.flags.valid)
+                trips++;
+
+        if (tz->trips.passive.flags.valid)
+                trips++;
+
+        for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE &&
+                        tz->trips.active[i].flags.valid; i++, trips++);
+        tz->thermal_zone = thermal_zone_device_register("ACPI thermal zone",
+                                        trips, tz, &acpi_thermal_zone_ops);
+        if (!tz->thermal_zone)
+                return -ENODEV;
+
+        result = sysfs_create_link(&tz->device->dev.kobj,
+                                   &tz->thermal_zone->device.kobj, "thermal_zone");
+        if (result)
+                return result;
+
+        result = sysfs_create_link(&tz->thermal_zone->device.kobj,
+                                   &tz->device->dev.kobj, "device");
+        if (result)
+                return result;
+
+        status = acpi_attach_data(tz->device->handle,
+                                  acpi_bus_private_data_handler,
+                                  tz->thermal_zone);
+        if (ACPI_FAILURE(status)) {
+                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                                "Error attaching device data\n"));
+                return -ENODEV;
+        }
+
+        tz->tz_enabled = 1;
+
+        printk(KERN_INFO PREFIX "%s is registered as thermal_zone%d\n",
+                        tz->device->dev.bus_id, tz->thermal_zone->id);
+        return 0;
+}
+
+static void acpi_thermal_unregister_thermal_zone(struct acpi_thermal *tz)
+{
+        sysfs_remove_link(&tz->device->dev.kobj, "thermal_zone");
+        sysfs_remove_link(&tz->thermal_zone->device.kobj, "device");
+        thermal_zone_device_unregister(tz->thermal_zone);
+        tz->thermal_zone = NULL;
+        acpi_detach_data(tz->device->handle, acpi_bus_private_data_handler);
+}
+
+
 /* --------------------------------------------------------------------------
                               FS Interface (/proc)
    -------------------------------------------------------------------------- */
@@ -1181,15 +1518,15 @@ static void acpi_thermal_notify(acpi_handle handle, u32 event, void *data)
                 acpi_thermal_check(tz);
                 break;
         case ACPI_THERMAL_NOTIFY_THRESHOLDS:
-                acpi_thermal_get_trip_points(tz);
+                acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_THRESHOLDS);
                 acpi_thermal_check(tz);
                 acpi_bus_generate_proc_event(device, event, 0);
                 acpi_bus_generate_netlink_event(device->pnp.device_class,
                                                   device->dev.bus_id, event, 0);
                 break;
         case ACPI_THERMAL_NOTIFY_DEVICES:
-                if (tz->flags.devices)
-                        acpi_thermal_get_devices(tz);
+                acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_DEVICES);
+                acpi_thermal_check(tz);
                 acpi_bus_generate_proc_event(device, event, 0);
                 acpi_bus_generate_netlink_event(device->pnp.device_class,
                                                   device->dev.bus_id, event, 0);
@@ -1232,11 +1569,6 @@ static int acpi_thermal_get_info(struct acpi_thermal *tz)
         else
                 acpi_thermal_get_polling_frequency(tz);
 
-        /* Get devices in this thermal zone [_TZD] (optional) */
-        result = acpi_thermal_get_devices(tz);
-        if (!result)
-                tz->flags.devices = 1;
-
         return 0;
 }
 
@@ -1260,13 +1592,19 @@ static int acpi_thermal_add(struct acpi_device *device)
         strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS);
         acpi_driver_data(device) = tz;
         mutex_init(&tz->lock);
+
+
         result = acpi_thermal_get_info(tz);
         if (result)
-                goto end;
+                goto free_memory;
+
+        result = acpi_thermal_register_thermal_zone(tz);
+        if (result)
+                goto free_memory;
 
         result = acpi_thermal_add_fs(device);
         if (result)
-                goto end;
+                goto unregister_thermal_zone;
 
         init_timer(&tz->timer);
 
@@ -1277,19 +1615,21 @@ static int acpi_thermal_add(struct acpi_device *device)
                                              acpi_thermal_notify, tz);
         if (ACPI_FAILURE(status)) {
                 result = -ENODEV;
-                goto end;
+                goto remove_fs;
         }
 
         printk(KERN_INFO PREFIX "%s [%s] (%ld C)\n",
                acpi_device_name(device), acpi_device_bid(device),
                KELVIN_TO_CELSIUS(tz->temperature));
+        goto end;
 
-      end:
-        if (result) {
-                acpi_thermal_remove_fs(device);
-                kfree(tz);
-        }
-
+remove_fs:
+        acpi_thermal_remove_fs(device);
+unregister_thermal_zone:
+        thermal_zone_device_unregister(tz->thermal_zone);
+free_memory:
+        kfree(tz);
+end:
         return result;
 }
 
@@ -1329,6 +1669,7 @@ static int acpi_thermal_remove(struct acpi_device *device, int type)
         }
 
         acpi_thermal_remove_fs(device);
+        acpi_thermal_unregister_thermal_zone(tz);
         mutex_destroy(&tz->lock);
         kfree(tz);
         return 0;
diff --git a/drivers/acpi/utilities/utglobal.c b/drivers/acpi/utilities/utglobal.c
index 93ea8290b4f7..630c9a2c5b7b 100644
--- a/drivers/acpi/utilities/utglobal.c
+++ b/drivers/acpi/utilities/utglobal.c
@@ -671,7 +671,6 @@ void acpi_ut_init_globals(void)
 
         /* GPE support */
 
-        acpi_gpe_count = 0;
         acpi_gbl_gpe_xrupt_list_head = NULL;
         acpi_gbl_gpe_fadt_blocks[0] = NULL;
         acpi_gbl_gpe_fadt_blocks[1] = NULL;
@@ -735,4 +734,3 @@ void acpi_ut_init_globals(void)
 
 ACPI_EXPORT_SYMBOL(acpi_dbg_level)
     ACPI_EXPORT_SYMBOL(acpi_dbg_layer)
-    ACPI_EXPORT_SYMBOL(acpi_gpe_count)
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index bd77e81e81c1..7f714fa2a454 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -34,6 +34,7 @@
 #include <linux/seq_file.h>
 #include <linux/input.h>
 #include <linux/backlight.h>
+#include <linux/thermal.h>
 #include <linux/video_output.h>
 #include <asm/uaccess.h>
 
@@ -72,8 +73,12 @@ MODULE_AUTHOR("Bruno Ducrot");
 MODULE_DESCRIPTION("ACPI Video Driver");
 MODULE_LICENSE("GPL");
 
+static int brightness_switch_enabled = 1;
+module_param(brightness_switch_enabled, bool, 0644);
+
 static int acpi_video_bus_add(struct acpi_device *device);
 static int acpi_video_bus_remove(struct acpi_device *device, int type);
+static int acpi_video_resume(struct acpi_device *device);
 
 static const struct acpi_device_id video_device_ids[] = {
         {ACPI_VIDEO_HID, 0},
@@ -88,6 +93,7 @@ static struct acpi_driver acpi_video_bus = {
         .ops = {
                 .add = acpi_video_bus_add,
                 .remove = acpi_video_bus_remove,
+                .resume = acpi_video_resume,
                 },
 };
 
@@ -179,6 +185,7 @@ struct acpi_video_device {
         struct acpi_device *dev;
         struct acpi_video_device_brightness *brightness;
         struct backlight_device *backlight;
+        struct thermal_cooling_device *cdev;
         struct output_device *output_dev;
 };
 
@@ -273,7 +280,6 @@ static void acpi_video_device_rebind(struct acpi_video_bus *video);
 static void acpi_video_device_bind(struct acpi_video_bus *video,
                                    struct acpi_video_device *device);
 static int acpi_video_device_enumerate(struct acpi_video_bus *video);
-static int acpi_video_switch_output(struct acpi_video_bus *video, int event);
 static int acpi_video_device_lcd_set_level(struct acpi_video_device *device,
                         int level);
 static int acpi_video_device_lcd_get_level_current(
@@ -292,18 +298,26 @@ static int acpi_video_device_set_state(struct acpi_video_device *device, int sta
 static int acpi_video_get_brightness(struct backlight_device *bd)
 {
         unsigned long cur_level;
+        int i;
         struct acpi_video_device *vd =
                 (struct acpi_video_device *)bl_get_data(bd);
         acpi_video_device_lcd_get_level_current(vd, &cur_level);
-        return (int) cur_level;
+        for (i = 2; i < vd->brightness->count; i++) {
+                if (vd->brightness->levels[i] == cur_level)
+                        /* The first two entries are special - see page 575
+                           of the ACPI spec 3.0 */
+                        return i-2;
+        }
+        return 0;
 }
 
 static int acpi_video_set_brightness(struct backlight_device *bd)
 {
-        int request_level = bd->props.brightness;
+        int request_level = bd->props.brightness+2;
         struct acpi_video_device *vd =
                 (struct acpi_video_device *)bl_get_data(bd);
-        acpi_video_device_lcd_set_level(vd, request_level);
+        acpi_video_device_lcd_set_level(vd,
+                                        vd->brightness->levels[request_level]);
         return 0;
 }
 
@@ -334,6 +348,54 @@ static struct output_properties acpi_output_properties = {
         .set_state = acpi_video_output_set,
         .get_status = acpi_video_output_get,
 };
+
+
+/* thermal cooling device callbacks */
+static int video_get_max_state(struct thermal_cooling_device *cdev, char *buf)
+{
+        struct acpi_device *device = cdev->devdata;
+        struct acpi_video_device *video = acpi_driver_data(device);
+
+        return sprintf(buf, "%d\n", video->brightness->count - 3);
+}
+
+static int video_get_cur_state(struct thermal_cooling_device *cdev, char *buf)
+{
+        struct acpi_device *device = cdev->devdata;
+        struct acpi_video_device *video = acpi_driver_data(device);
+        unsigned long level;
+        int state;
+
+        acpi_video_device_lcd_get_level_current(video, &level);
+        for (state = 2; state < video->brightness->count; state++)
+                if (level == video->brightness->levels[state])
+                        return sprintf(buf, "%d\n",
+                                       video->brightness->count - state - 1);
+
+        return -EINVAL;
+}
+
+static int
+video_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state)
+{
+        struct acpi_device *device = cdev->devdata;
+        struct acpi_video_device *video = acpi_driver_data(device);
+        int level;
+
+        if ( state >= video->brightness->count - 2)
+                return -EINVAL;
+
+        state = video->brightness->count - state;
+        level = video->brightness->levels[state -1];
+        return acpi_video_device_lcd_set_level(video, level);
+}
+
+static struct thermal_cooling_device_ops video_cooling_ops = {
+        .get_max_state = video_get_max_state,
+        .get_cur_state = video_get_cur_state,
+        .set_cur_state = video_set_cur_state,
+};
+
 /* --------------------------------------------------------------------------
                                Video Management
    -------------------------------------------------------------------------- */
@@ -652,7 +714,7 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
         kfree(obj);
 
         if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level > 0){
-                unsigned long tmp;
+                int result;
                 static int count = 0;
                 char *name;
                 name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
@@ -660,14 +722,30 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
                         return;
 
                 sprintf(name, "acpi_video%d", count++);
-                acpi_video_device_lcd_get_level_current(device, &tmp);
                 device->backlight = backlight_device_register(name,
                         NULL, device, &acpi_backlight_ops);
-                device->backlight->props.max_brightness = max_level;
-                device->backlight->props.brightness = (int)tmp;
+                device->backlight->props.max_brightness = device->brightness->count-3;
+                device->backlight->props.brightness = acpi_video_get_brightness(device->backlight);
                 backlight_update_status(device->backlight);
-
                 kfree(name);
+
+                device->cdev = thermal_cooling_device_register("LCD",
+                                        device->dev, &video_cooling_ops);
+                if (device->cdev) {
+                        printk(KERN_INFO PREFIX
+                                "%s is registered as cooling_device%d\n",
+                                device->dev->dev.bus_id, device->cdev->id);
+                        result = sysfs_create_link(&device->dev->dev.kobj,
+                                          &device->cdev->device.kobj,
+                                          "thermal_cooling");
+                        if (result)
+                                printk(KERN_ERR PREFIX "Create sysfs link\n");
+                        result = sysfs_create_link(&device->cdev->device.kobj,
+                                          &device->dev->dev.kobj,
+                                          "device");
+                        if (result)
+                                printk(KERN_ERR PREFIX "Create sysfs link\n");
+                }
         }
         if (device->cap._DCS && device->cap._DSS){
                 static int count = 0;
@@ -726,11 +804,40 @@ static void acpi_video_bus_find_cap(struct acpi_video_bus *video)
 static int acpi_video_bus_check(struct acpi_video_bus *video)
 {
         acpi_status status = -ENOENT;
-
+        long device_id;
+        struct device *dev;
+        struct acpi_device *device;
 
         if (!video)
                 return -EINVAL;
 
+        device = video->device;
+
+        status =
+            acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id);
+
+        if (!ACPI_SUCCESS(status))
+                return -ENODEV;
+
+        /* We need to attempt to determine whether the _ADR refers to a
+           PCI device or not. There's no terribly good way to do this,
+           so the best we can hope for is to assume that there'll never
+           be a video device in the host bridge */
+        if (device_id >= 0x10000) {
+                /* It looks like a PCI device. Does it exist? */
+                dev = acpi_get_physical_device(device->handle);
+        } else {
+                /* It doesn't look like a PCI device. Does its parent
+                   exist? */
+                acpi_handle phandle;
+                if (acpi_get_parent(device->handle, &phandle))
+                        return -ENODEV;
+                dev = acpi_get_physical_device(phandle);
+        }
+        if (!dev)
+                return -ENODEV;
+        put_device(dev);
+
         /* Since there is no HID, CID and so on for VGA driver, we have
          * to check well known required nodes.
          */
@@ -1256,8 +1363,37 @@ acpi_video_bus_write_DOS(struct file *file,
 
 static int acpi_video_bus_add_fs(struct acpi_device *device)
 {
+        long device_id;
+        int status;
         struct proc_dir_entry *entry = NULL;
         struct acpi_video_bus *video;
+        struct device *dev;
+
+        status =
+            acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id);
+
+        if (!ACPI_SUCCESS(status))
+                return -ENODEV;
+
+        /* We need to attempt to determine whether the _ADR refers to a
+           PCI device or not. There's no terribly good way to do this,
+           so the best we can hope for is to assume that there'll never
+           be a video device in the host bridge */
+        if (device_id >= 0x10000) {
+                /* It looks like a PCI device. Does it exist? */
+                dev = acpi_get_physical_device(device->handle);
+        } else {
+                /* It doesn't look like a PCI device. Does its parent
+                   exist? */
+                acpi_handle phandle;
+                if (acpi_get_parent(device->handle, &phandle))
+                        return -ENODEV;
+                dev = acpi_get_physical_device(phandle);
+        }
+        if (!dev)
+                return -ENODEV;
+        put_device(dev);
+
 
 
         video = acpi_driver_data(device);
@@ -1580,64 +1716,6 @@ static int acpi_video_device_enumerate(struct acpi_video_bus *video)
         return status;
 }
 
-/*
- *  Arg:
- *      video   : video bus device 
- *      event   : notify event
- *
- *  Return:
- *      < 0     : error
- *  
- *      1. Find out the current active output device.
- *      2. Identify the next output device to switch to.
- *      3. call _DSS to do actual switch.
- */
-
-static int acpi_video_switch_output(struct acpi_video_bus *video, int event)
-{
-        struct list_head *node;
-        struct acpi_video_device *dev = NULL;
-        struct acpi_video_device *dev_next = NULL;
-        struct acpi_video_device *dev_prev = NULL;
-        unsigned long state;
-        int status = 0;
-
-        mutex_lock(&video->device_list_lock);
-
-        list_for_each(node, &video->video_device_list) {
-                dev = container_of(node, struct acpi_video_device, entry);
-                status = acpi_video_device_get_state(dev, &state);
-                if (state & 0x2) {
-                        dev_next = container_of(node->next,
-                                        struct acpi_video_device, entry);
-                        dev_prev = container_of(node->prev,
-                                        struct acpi_video_device, entry);
-                        goto out;
-                }
-        }
-
-        dev_next = container_of(node->next, struct acpi_video_device, entry);
-        dev_prev = container_of(node->prev, struct acpi_video_device, entry);
-
- out:
-        mutex_unlock(&video->device_list_lock);
-
-        switch (event) {
-        case ACPI_VIDEO_NOTIFY_CYCLE:
-        case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT:
-                acpi_video_device_set_state(dev, 0);
-                acpi_video_device_set_state(dev_next, 0x80000001);
-                break;
-        case ACPI_VIDEO_NOTIFY_PREV_OUTPUT:
-                acpi_video_device_set_state(dev, 0);
-                acpi_video_device_set_state(dev_prev, 0x80000001);
-        default:
-                break;
-        }
-
-        return status;
-}
-
 static int
 acpi_video_get_next_level(struct acpi_video_device *device,
                           u32 level_current, u32 event)
@@ -1729,6 +1807,14 @@ static int acpi_video_bus_put_one_device(struct acpi_video_device *device)
                                             ACPI_DEVICE_NOTIFY,
                                             acpi_video_device_notify);
         backlight_device_unregister(device->backlight);
+        if (device->cdev) {
+                sysfs_remove_link(&device->dev->dev.kobj,
+                                  "thermal_cooling");
+                sysfs_remove_link(&device->cdev->device.kobj,
+                                  "device");
+                thermal_cooling_device_unregister(device->cdev);
+                device->cdev = NULL;
+        }
         video_output_unregister(device->output_dev);
 
         return 0;
@@ -1797,23 +1883,19 @@ static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
                                          * connector. */
                 acpi_video_device_enumerate(video);
                 acpi_video_device_rebind(video);
-                acpi_video_switch_output(video, event);
                 acpi_bus_generate_proc_event(device, event, 0);
                 keycode = KEY_SWITCHVIDEOMODE;
                 break;
 
         case ACPI_VIDEO_NOTIFY_CYCLE:   /* Cycle Display output hotkey pressed. */
-                acpi_video_switch_output(video, event);
                 acpi_bus_generate_proc_event(device, event, 0);
                 keycode = KEY_SWITCHVIDEOMODE;
                 break;
         case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT:     /* Next Display output hotkey pressed. */
-                acpi_video_switch_output(video, event);
                 acpi_bus_generate_proc_event(device, event, 0);
                 keycode = KEY_VIDEO_NEXT;
                 break;
         case ACPI_VIDEO_NOTIFY_PREV_OUTPUT:     /* previous Display output hotkey pressed. */
-                acpi_video_switch_output(video, event);
                 acpi_bus_generate_proc_event(device, event, 0);
                 keycode = KEY_VIDEO_PREV;
                 break;
@@ -1825,6 +1907,7 @@ static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
                 break;
         }
 
+        acpi_notifier_call_chain(device, event, 0);
         input_report_key(input, keycode, 1);
         input_sync(input);
         input_report_key(input, keycode, 0);
@@ -1850,27 +1933,32 @@ static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data)
 
         switch (event) {
         case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS:        /* Cycle brightness */
-                acpi_video_switch_brightness(video_device, event);
+                if (brightness_switch_enabled)
+                        acpi_video_switch_brightness(video_device, event);
                 acpi_bus_generate_proc_event(device, event, 0);
                 keycode = KEY_BRIGHTNESS_CYCLE;
                 break;
         case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS:  /* Increase brightness */
-                acpi_video_switch_brightness(video_device, event);
+                if (brightness_switch_enabled)
+                        acpi_video_switch_brightness(video_device, event);
                 acpi_bus_generate_proc_event(device, event, 0);
                 keycode = KEY_BRIGHTNESSUP;
                 break;
         case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS:  /* Decrease brightness */
-                acpi_video_switch_brightness(video_device, event);
+                if (brightness_switch_enabled)
+                        acpi_video_switch_brightness(video_device, event);
                 acpi_bus_generate_proc_event(device, event, 0);
                 keycode = KEY_BRIGHTNESSDOWN;
                 break;
         case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */
-                acpi_video_switch_brightness(video_device, event);
+                if (brightness_switch_enabled)
+                        acpi_video_switch_brightness(video_device, event);
                 acpi_bus_generate_proc_event(device, event, 0);
                 keycode = KEY_BRIGHTNESS_ZERO;
                 break;
         case ACPI_VIDEO_NOTIFY_DISPLAY_OFF:     /* display device off */
-                acpi_video_switch_brightness(video_device, event);
+                if (brightness_switch_enabled)
+                        acpi_video_switch_brightness(video_device, event);
                 acpi_bus_generate_proc_event(device, event, 0);
                 keycode = KEY_DISPLAY_OFF;
                 break;
@@ -1881,6 +1969,7 @@ static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data)
                 break;
         }
 
+        acpi_notifier_call_chain(device, event, 0);
         input_report_key(input, keycode, 1);
         input_sync(input);
         input_report_key(input, keycode, 0);
@@ -1890,6 +1979,25 @@ static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data)
 }
 
 static int instance;
+static int acpi_video_resume(struct acpi_device *device)
+{
+        struct acpi_video_bus *video;
+        struct acpi_video_device *video_device;
+        int i;
+
+        if (!device || !acpi_driver_data(device))
+                return -EINVAL;
+
+        video = acpi_driver_data(device);
+
+        for (i = 0; i < video->attached_count; i++) {
+                video_device = video->attached_array[i].bind_info;
+                if (video_device && video_device->backlight)
+                        acpi_video_set_brightness(video_device->backlight);
+        }
+        return AE_OK;
+}
+
 static int acpi_video_bus_add(struct acpi_device *device)
 {
         acpi_status status;
diff --git a/drivers/acpi/wmi.c b/drivers/acpi/wmi.c
new file mode 100644
index 000000000000..36b84ab418dd
--- /dev/null
+++ b/drivers/acpi/wmi.c
@@ -0,0 +1,710 @@
+/*
+ *  ACPI-WMI mapping driver
+ *
+ *  Copyright (C) 2007-2008 Carlos Corbacho <carlos@strangeworlds.co.uk>
+ *
+ *  GUID parsing code from ldm.c is:
+ *   Copyright (C) 2001,2002 Richard Russon <ldm@flatcap.org>
+ *   Copyright (c) 2001-2007 Anton Altaparmakov
+ *   Copyright (C) 2001,2002 Jakob Kemi <jakob.kemi@telia.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or (at
+ *  your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful, but
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/acpi.h>
+#include <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
+
+ACPI_MODULE_NAME("wmi");
+MODULE_AUTHOR("Carlos Corbacho");
+MODULE_DESCRIPTION("ACPI-WMI Mapping Driver");
+MODULE_LICENSE("GPL");
+
+#define ACPI_WMI_CLASS "wmi"
+
+#undef PREFIX
+#define PREFIX "ACPI: WMI: "
+
+static DEFINE_MUTEX(wmi_data_lock);
+
+struct guid_block {
+        char guid[16];
+        union {
+                char object_id[2];
+                struct {
+                        unsigned char notify_id;
+                        unsigned char reserved;
+                };
+        };
+        u8 instance_count;
+        u8 flags;
+};
+
+struct wmi_block {
+        struct list_head list;
+        struct guid_block gblock;
+        acpi_handle handle;
+        wmi_notify_handler handler;
+        void *handler_data;
+};
+
+static struct wmi_block wmi_blocks;
+
+/*
+ * If the GUID data block is marked as expensive, we must enable and
+ * explicitily disable data collection.
+ */
+#define ACPI_WMI_EXPENSIVE   0x1
+#define ACPI_WMI_METHOD      0x2        /* GUID is a method */
+#define ACPI_WMI_STRING      0x4        /* GUID takes & returns a string */
+#define ACPI_WMI_EVENT       0x8        /* GUID is an event */
+
+static int acpi_wmi_remove(struct acpi_device *device, int type);
+static int acpi_wmi_add(struct acpi_device *device);
+
+static const struct acpi_device_id wmi_device_ids[] = {
+        {"PNP0C14", 0},
+        {"pnp0c14", 0},
+        {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, wmi_device_ids);
+
+static struct acpi_driver acpi_wmi_driver = {
+        .name = "wmi",
+        .class = ACPI_WMI_CLASS,
+        .ids = wmi_device_ids,
+        .ops = {
+                .add = acpi_wmi_add,
+                .remove = acpi_wmi_remove,
+                },
+};
+
+/*
+ * GUID parsing functions
+ */
+
+/**
+ * wmi_parse_hexbyte - Convert a ASCII hex number to a byte
+ * @src:  Pointer to at least 2 characters to convert.
+ *
+ * Convert a two character ASCII hex string to a number.
+ *
+ * Return:  0-255  Success, the byte was parsed correctly
+ *          -1     Error, an invalid character was supplied
+ */
+static int wmi_parse_hexbyte(const u8 *src)
+{
+        unsigned int x; /* For correct wrapping */
+        int h;
+
+        /* high part */
+        x = src[0];
+        if (x - '0' <= '9' - '0') {
+                h = x - '0';
+        } else if (x - 'a' <= 'f' - 'a') {
+                h = x - 'a' + 10;
+        } else if (x - 'A' <= 'F' - 'A') {
+                h = x - 'A' + 10;
+        } else {
+                return -1;
+        }
+        h <<= 4;
+
+        /* low part */
+        x = src[1];
+        if (x - '0' <= '9' - '0')
+                return h | (x - '0');
+        if (x - 'a' <= 'f' - 'a')
+                return h | (x - 'a' + 10);
+        if (x - 'A' <= 'F' - 'A')
+                return h | (x - 'A' + 10);
+        return -1;
+}
+
+/**
+ * wmi_swap_bytes - Rearrange GUID bytes to match GUID binary
+ * @src:   Memory block holding binary GUID (16 bytes)
+ * @dest:  Memory block to hold byte swapped binary GUID (16 bytes)
+ *
+ * Byte swap a binary GUID to match it's real GUID value
+ */
+static void wmi_swap_bytes(u8 *src, u8 *dest)
+{
+        int i;
+
+        for (i = 0; i <= 3; i++)
+                memcpy(dest + i, src + (3 - i), 1);
+
+        for (i = 0; i <= 1; i++)
+                memcpy(dest + 4 + i, src + (5 - i), 1);
+
+        for (i = 0; i <= 1; i++)
+                memcpy(dest + 6 + i, src + (7 - i), 1);
+
+        memcpy(dest + 8, src + 8, 8);
+}
+
+/**
+ * wmi_parse_guid - Convert GUID from ASCII to binary
+ * @src:   36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
+ * @dest:  Memory block to hold binary GUID (16 bytes)
+ *
+ * N.B. The GUID need not be NULL terminated.
+ *
+ * Return:  'true'   @dest contains binary GUID
+ *          'false'  @dest contents are undefined
+ */
+static bool wmi_parse_guid(const u8 *src, u8 *dest)
+{
+        static const int size[] = { 4, 2, 2, 2, 6 };
+        int i, j, v;
+
+        if (src[8]  != '-' || src[13] != '-' ||
+                src[18] != '-' || src[23] != '-')
+                return false;
+
+        for (j = 0; j < 5; j++, src++) {
+                for (i = 0; i < size[j]; i++, src += 2, *dest++ = v) {
+                        v = wmi_parse_hexbyte(src);
+                        if (v < 0)
+                                return false;
+                }
+        }
+
+        return true;
+}
+
+static bool find_guid(const char *guid_string, struct wmi_block **out)
+{
+        char tmp[16], guid_input[16];
+        struct wmi_block *wblock;
+        struct guid_block *block;
+        struct list_head *p;
+
+        wmi_parse_guid(guid_string, tmp);
+        wmi_swap_bytes(tmp, guid_input);
+
+        list_for_each(p, &wmi_blocks.list) {
+                wblock = list_entry(p, struct wmi_block, list);
+                block = &wblock->gblock;
+
+                if (memcmp(block->guid, guid_input, 16) == 0) {
+                        if (out)
+                                *out = wblock;
+                        return 1;
+                }
+        }
+        return 0;
+}
+
+/*
+ * Exported WMI functions
+ */
+/**
+ * wmi_evaluate_method - Evaluate a WMI method
+ * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
+ * @instance: Instance index
+ * @method_id: Method ID to call
+ * &in: Buffer containing input for the method call
+ * &out: Empty buffer to return the method results
+ *
+ * Call an ACPI-WMI method
+ */
+acpi_status wmi_evaluate_method(const char *guid_string, u8 instance,
+u32 method_id, const struct acpi_buffer *in, struct acpi_buffer *out)
+{
+        struct guid_block *block = NULL;
+        struct wmi_block *wblock = NULL;
+        acpi_handle handle;
+        acpi_status status;
+        struct acpi_object_list input;
+        union acpi_object params[3];
+        char method[4] = "WM";
+
+        if (!find_guid(guid_string, &wblock))
+                return AE_BAD_ADDRESS;
+
+        block = &wblock->gblock;
+        handle = wblock->handle;
+
+        if (!block->flags & ACPI_WMI_METHOD)
+                return AE_BAD_DATA;
+
+        if (block->instance_count < instance)
+                return AE_BAD_PARAMETER;
+
+        input.count = 2;
+        input.pointer = params;
+        params[0].type = ACPI_TYPE_INTEGER;
+        params[0].integer.value = instance;
+        params[1].type = ACPI_TYPE_INTEGER;
+        params[1].integer.value = method_id;
+
+        if (in) {
+                input.count = 3;
+
+                if (block->flags & ACPI_WMI_STRING) {
+                        params[2].type = ACPI_TYPE_STRING;
+                } else {
+                        params[2].type = ACPI_TYPE_BUFFER;
+                }
+                params[2].buffer.length = in->length;
+                params[2].buffer.pointer = in->pointer;
+        }
+
+        strncat(method, block->object_id, 2);
+
+        status = acpi_evaluate_object(handle, method, &input, out);
+
+        return status;
+}
+EXPORT_SYMBOL_GPL(wmi_evaluate_method);
+
+/**
+ * wmi_query_block - Return contents of a WMI block
+ * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
+ * @instance: Instance index
+ * &out: Empty buffer to return the contents of the data block to
+ *
+ * Return the contents of an ACPI-WMI data block to a buffer
+ */
+acpi_status wmi_query_block(const char *guid_string, u8 instance,
+struct acpi_buffer *out)
+{
+        struct guid_block *block = NULL;
+        struct wmi_block *wblock = NULL;
+        acpi_handle handle;
+        acpi_status status, wc_status = AE_ERROR;
+        struct acpi_object_list input, wc_input;
+        union acpi_object wc_params[1], wq_params[1];
+        char method[4];
+        char wc_method[4] = "WC";
+
+        if (!guid_string || !out)
+                return AE_BAD_PARAMETER;
+
+        if (!find_guid(guid_string, &wblock))
+                return AE_BAD_ADDRESS;
+
+        block = &wblock->gblock;
+        handle = wblock->handle;
+
+        if (block->instance_count < instance)
+                return AE_BAD_PARAMETER;
+
+        /* Check GUID is a data block */
+        if (block->flags & (ACPI_WMI_EVENT | ACPI_WMI_METHOD))
+                return AE_BAD_ADDRESS;
+
+        input.count = 1;
+        input.pointer = wq_params;
+        wq_params[0].type = ACPI_TYPE_INTEGER;
+        wq_params[0].integer.value = instance;
+
+        /*
+         * If ACPI_WMI_EXPENSIVE, call the relevant WCxx method first to
+         * enable collection.
+         */
+        if (block->flags & ACPI_WMI_EXPENSIVE) {
+                wc_input.count = 1;
+                wc_input.pointer = wc_params;
+                wc_params[0].type = ACPI_TYPE_INTEGER;
+                wc_params[0].integer.value = 1;
+
+                strncat(wc_method, block->object_id, 2);
+
+                /*
+                 * Some GUIDs break the specification by declaring themselves
+                 * expensive, but have no corresponding WCxx method. So we
+                 * should not fail if this happens.
+                 */
+                wc_status = acpi_evaluate_object(handle, wc_method,
+                        &wc_input, NULL);
+        }
+
+        strcpy(method, "WQ");
+        strncat(method, block->object_id, 2);
+
+        status = acpi_evaluate_object(handle, method, NULL, out);
+
+        /*
+         * If ACPI_WMI_EXPENSIVE, call the relevant WCxx method, even if
+         * the WQxx method failed - we should disable collection anyway.
+         */
+        if ((block->flags & ACPI_WMI_EXPENSIVE) && wc_status) {
+                wc_params[0].integer.value = 0;
+                status = acpi_evaluate_object(handle,
+                wc_method, &wc_input, NULL);
+        }
+
+        return status;
+}
+EXPORT_SYMBOL_GPL(wmi_query_block);
+
+/**
+ * wmi_set_block - Write to a WMI block
+ * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
+ * @instance: Instance index
+ * &in: Buffer containing new values for the data block
+ *
+ * Write the contents of the input buffer to an ACPI-WMI data block
+ */
+acpi_status wmi_set_block(const char *guid_string, u8 instance,
+const struct acpi_buffer *in)
+{
+        struct guid_block *block = NULL;
+        struct wmi_block *wblock = NULL;
+        acpi_handle handle;
+        struct acpi_object_list input;
+        union acpi_object params[2];
+        char method[4] = "WS";
+
+        if (!guid_string || !in)
+                return AE_BAD_DATA;
+
+        if (!find_guid(guid_string, &wblock))
+                return AE_BAD_ADDRESS;
+
+        block = &wblock->gblock;
+        handle = wblock->handle;
+
+        if (block->instance_count < instance)
+                return AE_BAD_PARAMETER;
+
+        /* Check GUID is a data block */
+        if (block->flags & (ACPI_WMI_EVENT | ACPI_WMI_METHOD))
+                return AE_BAD_ADDRESS;
+
+        input.count = 2;
+        input.pointer = params;
+        params[0].type = ACPI_TYPE_INTEGER;
+        params[0].integer.value = instance;
+
+        if (block->flags & ACPI_WMI_STRING) {
+                params[1].type = ACPI_TYPE_STRING;
+        } else {
+                params[1].type = ACPI_TYPE_BUFFER;
+        }
+        params[1].buffer.length = in->length;
+        params[1].buffer.pointer = in->pointer;
+
+        strncat(method, block->object_id, 2);
+
+        return acpi_evaluate_object(handle, method, &input, NULL);
+}
+EXPORT_SYMBOL_GPL(wmi_set_block);
+
+/**
+ * wmi_install_notify_handler - Register handler for WMI events
+ * @handler: Function to handle notifications
+ * @data: Data to be returned to handler when event is fired
+ *
+ * Register a handler for events sent to the ACPI-WMI mapper device.
+ */
+acpi_status wmi_install_notify_handler(const char *guid,
+wmi_notify_handler handler, void *data)
+{
+        struct wmi_block *block;
+
+        if (!guid || !handler)
+                return AE_BAD_PARAMETER;
+
+        find_guid(guid, &block);
+        if (!block)
+                return AE_NOT_EXIST;
+
+        if (block->handler)
+                return AE_ALREADY_ACQUIRED;
+
+        block->handler = handler;
+        block->handler_data = data;
+
+        return AE_OK;
+}
+EXPORT_SYMBOL_GPL(wmi_install_notify_handler);
+
+/**
+ * wmi_uninstall_notify_handler - Unregister handler for WMI events
+ *
+ * Unregister handler for events sent to the ACPI-WMI mapper device.
+ */
+acpi_status wmi_remove_notify_handler(const char *guid)
+{
+        struct wmi_block *block;
+
+        if (!guid)
+                return AE_BAD_PARAMETER;
+
+        find_guid(guid, &block);
+        if (!block)
+                return AE_NOT_EXIST;
+
+        if (!block->handler)
+                return AE_NULL_ENTRY;
+
+        block->handler = NULL;
+        block->handler_data = NULL;
+
+        return AE_OK;
+}
+EXPORT_SYMBOL_GPL(wmi_remove_notify_handler);
+
+/**
+ * wmi_get_event_data - Get WMI data associated with an event
+ *
+ * @event - Event to find
+ * &out - Buffer to hold event data
+ *
+ * Returns extra data associated with an event in WMI.
+ */
+acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out)
+{
+        struct acpi_object_list input;
+        union acpi_object params[1];
+        struct guid_block *gblock;
+        struct wmi_block *wblock;
+        struct list_head *p;
+
+        input.count = 1;
+        input.pointer = params;
+        params[0].type = ACPI_TYPE_INTEGER;
+        params[0].integer.value = event;
+
+        list_for_each(p, &wmi_blocks.list) {
+                wblock = list_entry(p, struct wmi_block, list);
+                gblock = &wblock->gblock;
+
+                if ((gblock->flags & ACPI_WMI_EVENT) &&
+                        (gblock->notify_id == event))
+                        return acpi_evaluate_object(wblock->handle, "_WED",
+                                &input, out);
+        }
+
+        return AE_NOT_FOUND;
+}
+EXPORT_SYMBOL_GPL(wmi_get_event_data);
+
+/**
+ * wmi_has_guid - Check if a GUID is available
+ * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
+ *
+ * Check if a given GUID is defined by _WDG
+ */
+bool wmi_has_guid(const char *guid_string)
+{
+        return find_guid(guid_string, NULL);
+}
+EXPORT_SYMBOL_GPL(wmi_has_guid);
+
+/*
+ * Parse the _WDG method for the GUID data blocks
+ */
+static __init acpi_status parse_wdg(acpi_handle handle)
+{
+        struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
+        union acpi_object *obj;
+        struct guid_block *gblock;
+        struct wmi_block *wblock;
+        acpi_status status;
+        u32 i, total;
+
+        status = acpi_evaluate_object(handle, "_WDG", NULL, &out);
+
+        if (ACPI_FAILURE(status))
+                return status;
+
+        obj = (union acpi_object *) out.pointer;
+
+        if (obj->type != ACPI_TYPE_BUFFER)
+                return AE_ERROR;
+
+        total = obj->buffer.length / sizeof(struct guid_block);
+
+        gblock = kzalloc(obj->buffer.length, GFP_KERNEL);
+        if (!gblock)
+                return AE_NO_MEMORY;
+
+        memcpy(gblock, obj->buffer.pointer, obj->buffer.length);
+
+        for (i = 0; i < total; i++) {
+                wblock = kzalloc(sizeof(struct wmi_block), GFP_KERNEL);
+                if (!wblock)
+                        return AE_NO_MEMORY;
+
+                wblock->gblock = gblock[i];
+                wblock->handle = handle;
+                list_add_tail(&wblock->list, &wmi_blocks.list);
+        }
+
+        kfree(out.pointer);
+        kfree(gblock);
+
+        return status;
+}
+
+/*
+ * WMI can have EmbeddedControl access regions. In which case, we just want to
+ * hand these off to the EC driver.
+ */
+static acpi_status
+acpi_wmi_ec_space_handler(u32 function, acpi_physical_address address,
+                      u32 bits, acpi_integer * value,
+                      void *handler_context, void *region_context)
+{
+        int result = 0, i = 0;
+        u8 temp = 0;
+
+        if ((address > 0xFF) || !value)
+                return AE_BAD_PARAMETER;
+
+        if (function != ACPI_READ && function != ACPI_WRITE)
+                return AE_BAD_PARAMETER;
+
+        if (bits != 8)
+                return AE_BAD_PARAMETER;
+
+        if (function == ACPI_READ) {
+                result = ec_read(address, &temp);
+                (*value) |= ((acpi_integer)temp) << i;
+        } else {
+                temp = 0xff & ((*value) >> i);
+                result = ec_write(address, temp);
+        }
+
+        switch (result) {
+        case -EINVAL:
+                return AE_BAD_PARAMETER;
+                break;
+        case -ENODEV:
+                return AE_NOT_FOUND;
+                break;
+        case -ETIME:
+                return AE_TIME;
+                break;
+        default:
+                return AE_OK;
+        }
+}
+
+static void acpi_wmi_notify(acpi_handle handle, u32 event, void *data)
+{
+        struct guid_block *block;
+        struct wmi_block *wblock;
+        struct list_head *p;
+        struct acpi_device *device = data;
+
+        list_for_each(p, &wmi_blocks.list) {
+                wblock = list_entry(p, struct wmi_block, list);
+                block = &wblock->gblock;
+
+                if ((block->flags & ACPI_WMI_EVENT) &&
+                        (block->notify_id == event)) {
+                        if (wblock->handler)
+                                wblock->handler(event, wblock->handler_data);
+
+                        acpi_bus_generate_netlink_event(
+                                device->pnp.device_class, device->dev.bus_id,
+                                event, 0);
+                        break;
+                }
+        }
+}
+
+static int acpi_wmi_remove(struct acpi_device *device, int type)
+{
+        acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
+                acpi_wmi_notify);
+
+        acpi_remove_address_space_handler(device->handle,
+                                ACPI_ADR_SPACE_EC, &acpi_wmi_ec_space_handler);
+
+        return 0;
+}
+
+static int __init acpi_wmi_add(struct acpi_device *device)
+{
+        acpi_status status;
+        int result = 0;
+
+        status = acpi_install_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
+                acpi_wmi_notify, device);
+        if (ACPI_FAILURE(status)) {
+                printk(KERN_ERR PREFIX "Error installing notify handler\n");
+                return -ENODEV;
+        }
+
+        status = acpi_install_address_space_handler(device->handle,
+                                                    ACPI_ADR_SPACE_EC,
+                                                    &acpi_wmi_ec_space_handler,
+                                                    NULL, NULL);
+        if (ACPI_FAILURE(status))
+                return -ENODEV;
+
+        status = parse_wdg(device->handle);
+        if (ACPI_FAILURE(status)) {
+                printk(KERN_ERR PREFIX "Error installing EC region handler\n");
+                return -ENODEV;
+        }
+
+        return result;
+}
+
+static int __init acpi_wmi_init(void)
+{
+        acpi_status result;
+
+        if (acpi_disabled)
+                return -ENODEV;
+
+        INIT_LIST_HEAD(&wmi_blocks.list);
+
+        result = acpi_bus_register_driver(&acpi_wmi_driver);
+
+        if (result < 0) {
+                printk(KERN_INFO PREFIX "Error loading mapper\n");
+        } else {
+                printk(KERN_INFO PREFIX "Mapper loaded\n");
+        }
+
+        return result;
+}
+
+static void __exit acpi_wmi_exit(void)
+{
+        struct list_head *p, *tmp;
+        struct wmi_block *wblock;
+
+        acpi_bus_unregister_driver(&acpi_wmi_driver);
+
+        list_for_each_safe(p, tmp, &wmi_blocks.list) {
+                wblock = list_entry(p, struct wmi_block, list);
+
+                list_del(p);
+                kfree(wblock);
+        }
+
+        printk(KERN_INFO PREFIX "Mapper unloaded\n");
+}
+
+subsys_initcall(acpi_wmi_init);
+module_exit(acpi_wmi_exit);
diff --git a/drivers/cpuidle/Kconfig b/drivers/cpuidle/Kconfig
index 3bed4127d4ad..7dbc4a83c45c 100644
--- a/drivers/cpuidle/Kconfig
+++ b/drivers/cpuidle/Kconfig
@@ -1,13 +1,13 @@
 
 config CPU_IDLE
         bool "CPU idle PM support"
+        default ACPI
         help
           CPU idle is a generic framework for supporting software-controlled
           idle processor power management.  It includes modular cross-platform
           governors that can be swapped during runtime.
 
-          If you're using a mobile platform that supports CPU idle PM (e.g.
-          an ACPI-capable notebook), you should say Y here.
+          If you're using an ACPI-enabled platform, you should say Y here.
 
 config CPU_IDLE_GOV_LADDER
         bool
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 2a98d99cbd46..2c4b2d47973e 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -15,6 +15,7 @@
 #include <linux/pm_qos_params.h>
 #include <linux/cpu.h>
 #include <linux/cpuidle.h>
+#include <linux/ktime.h>
 
 #include "cpuidle.h"
 
@@ -180,6 +181,44 @@ void cpuidle_disable_device(struct cpuidle_device *dev)
 
 EXPORT_SYMBOL_GPL(cpuidle_disable_device);
 
+#ifdef CONFIG_ARCH_HAS_CPU_RELAX
+static int poll_idle(struct cpuidle_device *dev, struct cpuidle_state *st)
+{
+        ktime_t t1, t2;
+        s64 diff;
+        int ret;
+
+        t1 = ktime_get();
+        local_irq_enable();
+        while (!need_resched())
+                cpu_relax();
+
+        t2 = ktime_get();
+        diff = ktime_to_us(ktime_sub(t2, t1));
+        if (diff > INT_MAX)
+                diff = INT_MAX;
+
+        ret = (int) diff;
+        return ret;
+}
+
+static void poll_idle_init(struct cpuidle_device *dev)
+{
+        struct cpuidle_state *state = &dev->states[0];
+
+        cpuidle_set_statedata(state, NULL);
+
+        snprintf(state->name, CPUIDLE_NAME_LEN, "C0 (poll idle)");
+        state->exit_latency = 0;
+        state->target_residency = 0;
+        state->power_usage = -1;
+        state->flags = CPUIDLE_FLAG_POLL | CPUIDLE_FLAG_TIME_VALID;
+        state->enter = poll_idle;
+}
+#else
+static void poll_idle_init(struct cpuidle_device *dev) {}
+#endif /* CONFIG_ARCH_HAS_CPU_RELAX */
+
 /**
  * cpuidle_register_device - registers a CPU's idle PM feature
  * @dev: the cpu
@@ -198,6 +237,8 @@ int cpuidle_register_device(struct cpuidle_device *dev)
 
         mutex_lock(&cpuidle_lock);
 
+        poll_idle_init(dev);
+
         per_cpu(cpuidle_devices, dev->cpu) = dev;
         list_add(&dev->device_list, &cpuidle_detected_devices);
         if ((ret = cpuidle_add_sysfs(sys_dev))) {
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 9008ed5ef4ce..e0bade732376 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -489,12 +489,3 @@ int dmi_get_year(int field)
 
         return year;
 }
-
-/**
- *      dmi_get_slot - return dmi_ident[slot]
- *      @slot:  index into dmi_ident[]
- */
-char *dmi_get_slot(int slot)
-{
-        return(dmi_ident[slot]);
-}
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index b5e67c0ff433..78cd33861766 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -92,6 +92,22 @@ config TIFM_7XX1
           To compile this driver as a module, choose M here: the module will
           be called tifm_7xx1.
 
+config ACER_WMI
+        tristate "Acer WMI Laptop Extras (EXPERIMENTAL)"
+        depends on X86
+        depends on EXPERIMENTAL
+        depends on ACPI
+        depends on ACPI_WMI
+        depends on LEDS_CLASS
+        depends on BACKLIGHT_CLASS_DEVICE
+        ---help---
+          This is a driver for newer Acer (and Wistron) laptops. It adds
+          wireless radio and bluetooth control, and on some laptops,
+          exposes the mail LED and LCD backlight.
+
+          If you have an ACPI-WMI compatible Acer/ Wistron laptop, say Y or M
+          here.
+
 config ASUS_LAPTOP
         tristate "Asus Laptop Extras (EXPERIMENTAL)"
         depends on X86
@@ -126,6 +142,15 @@ config FUJITSU_LAPTOP
 
           If you have a Fujitsu laptop, say Y or M here.
 
+config TC1100_WMI
+        tristate "HP Compaq TC1100 Tablet WMI Extras"
+        depends on X86 && !X86_64
+        depends on ACPI
+        depends on ACPI_WMI
+        ---help---
+          This is a driver for the WMI extensions (wireless and bluetooth power
+          control) of the HP Compaq TC1100 tablet.
+
 config MSI_LAPTOP
         tristate "MSI Laptop Extras"
         depends on X86
@@ -219,6 +244,25 @@ config THINKPAD_ACPI_BAY
 
           If you are not sure, say Y here.
 
+config THINKPAD_ACPI_HOTKEY_POLL
+        bool "Suport NVRAM polling for hot keys"
+        depends on THINKPAD_ACPI
+        default y
+        ---help---
+          Some thinkpad models benefit from NVRAM polling to detect a few of
+          the hot key press events.  If you know your ThinkPad model does not
+          need to do NVRAM polling to support any of the hot keys you use,
+          unselecting this option will save about 1kB of memory.
+
+          ThinkPads T40 and newer, R52 and newer, and X31 and newer are
+          unlikely to need NVRAM polling in their latest BIOS versions.
+
+          NVRAM polling can detect at most the following keys: ThinkPad/Access
+          IBM, Zoom, Switch Display (fn+F7), ThinkLight, Volume up/down/mute,
+          Brightness up/down, Display Expand (fn+F8), Hibernate (fn+F12).
+
+          If you are not sure, say Y here.  The driver enables polling only if
+          it is strictly necessary to do so.
 
 config ATMEL_SSC
         tristate "Device driver for Atmel SSC peripheral"
@@ -232,4 +276,13 @@ config ATMEL_SSC
 
           If unsure, say N.
 
+config INTEL_MENLOW
+        tristate "Thermal Management driver for Intel menlow platform"
+        depends on ACPI_THERMAL
+        ---help---
+          ACPI thermal management enhancement driver on
+          Intel Menlow platform.
+
+          If unsure, say N.
+
 endif # MISC_DEVICES
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 87f2685d728f..1f41654aae4d 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -6,8 +6,10 @@ obj- := misc.o	# Dummy rule to force built-in.o to be made
 obj-$(CONFIG_IBM_ASM)           += ibmasm/
 obj-$(CONFIG_HDPU_FEATURES)     += hdpuftrs/
 obj-$(CONFIG_MSI_LAPTOP)     += msi-laptop.o
+obj-$(CONFIG_ACER_WMI)     += acer-wmi.o
 obj-$(CONFIG_ASUS_LAPTOP)     += asus-laptop.o
 obj-$(CONFIG_ATMEL_SSC)         += atmel-ssc.o
+obj-$(CONFIG_TC1100_WMI)        += tc1100-wmi.o
 obj-$(CONFIG_LKDTM)             += lkdtm.o
 obj-$(CONFIG_TIFM_CORE)         += tifm_core.o
 obj-$(CONFIG_TIFM_7XX1)         += tifm_7xx1.o
@@ -17,3 +19,4 @@ obj-$(CONFIG_SONY_LAPTOP)	+= sony-laptop.o
 obj-$(CONFIG_THINKPAD_ACPI)     += thinkpad_acpi.o
 obj-$(CONFIG_FUJITSU_LAPTOP)    += fujitsu-laptop.o
 obj-$(CONFIG_EEPROM_93CX6)      += eeprom_93cx6.o
+obj-$(CONFIG_INTEL_MENLOW)      += intel_menlow.o
diff --git a/drivers/misc/acer-wmi.c b/drivers/misc/acer-wmi.c
new file mode 100644
index 000000000000..a4d677504250
--- /dev/null
+++ b/drivers/misc/acer-wmi.c
@@ -0,0 +1,1109 @@
+/*
+ *  Acer WMI Laptop Extras
+ *
+ *  Copyright (C) 2007-2008     Carlos Corbacho <carlos@strangeworlds.co.uk>
+ *
+ *  Based on acer_acpi:
+ *    Copyright (C) 2005-2007   E.M. Smith
+ *    Copyright (C) 2007-2008   Carlos Corbacho <cathectic@gmail.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#define ACER_WMI_VERSION        "0.1"
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/dmi.h>
+#include <linux/backlight.h>
+#include <linux/leds.h>
+#include <linux/platform_device.h>
+#include <linux/acpi.h>
+#include <linux/i8042.h>
+
+#include <acpi/acpi_drivers.h>
+
+MODULE_AUTHOR("Carlos Corbacho");
+MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
+MODULE_LICENSE("GPL");
+
+#define ACER_LOGPREFIX "acer-wmi: "
+#define ACER_ERR KERN_ERR ACER_LOGPREFIX
+#define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
+#define ACER_INFO KERN_INFO ACER_LOGPREFIX
+
+/*
+ * The following defines quirks to get some specific functions to work
+ * which are known to not be supported over ACPI-WMI (such as the mail LED
+ * on WMID based Acer's)
+ */
+struct acer_quirks {
+        const char *vendor;
+        const char *model;
+        u16 quirks;
+};
+
+/*
+ * Magic Number
+ * Meaning is unknown - this number is required for writing to ACPI for AMW0
+ * (it's also used in acerhk when directly accessing the BIOS)
+ */
+#define ACER_AMW0_WRITE 0x9610
+
+/*
+ * Bit masks for the AMW0 interface
+ */
+#define ACER_AMW0_WIRELESS_MASK  0x35
+#define ACER_AMW0_BLUETOOTH_MASK 0x34
+#define ACER_AMW0_MAILLED_MASK   0x31
+
+/*
+ * Method IDs for WMID interface
+ */
+#define ACER_WMID_GET_WIRELESS_METHODID         1
+#define ACER_WMID_GET_BLUETOOTH_METHODID        2
+#define ACER_WMID_GET_BRIGHTNESS_METHODID       3
+#define ACER_WMID_SET_WIRELESS_METHODID         4
+#define ACER_WMID_SET_BLUETOOTH_METHODID        5
+#define ACER_WMID_SET_BRIGHTNESS_METHODID       6
+#define ACER_WMID_GET_THREEG_METHODID           10
+#define ACER_WMID_SET_THREEG_METHODID           11
+
+/*
+ * Acer ACPI method GUIDs
+ */
+#define AMW0_GUID1              "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
+#define WMID_GUID1              "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"
+#define WMID_GUID2              "95764E09-FB56-4e83-B31A-37761F60994A"
+
+MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
+MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3");
+
+/* Temporary workaround until the WMI sysfs interface goes in */
+MODULE_ALIAS("dmi:*:*Acer*:*:");
+
+/*
+ * Interface capability flags
+ */
+#define ACER_CAP_MAILLED                (1<<0)
+#define ACER_CAP_WIRELESS               (1<<1)
+#define ACER_CAP_BLUETOOTH              (1<<2)
+#define ACER_CAP_BRIGHTNESS             (1<<3)
+#define ACER_CAP_THREEG                 (1<<4)
+#define ACER_CAP_ANY                    (0xFFFFFFFF)
+
+/*
+ * Interface type flags
+ */
+enum interface_flags {
+        ACER_AMW0,
+        ACER_AMW0_V2,
+        ACER_WMID,
+};
+
+#define ACER_DEFAULT_WIRELESS  0
+#define ACER_DEFAULT_BLUETOOTH 0
+#define ACER_DEFAULT_MAILLED   0
+#define ACER_DEFAULT_THREEG    0
+
+static int max_brightness = 0xF;
+
+static int wireless = -1;
+static int bluetooth = -1;
+static int mailled = -1;
+static int brightness = -1;
+static int threeg = -1;
+static int force_series;
+
+module_param(mailled, int, 0444);
+module_param(wireless, int, 0444);
+module_param(bluetooth, int, 0444);
+module_param(brightness, int, 0444);
+module_param(threeg, int, 0444);
+module_param(force_series, int, 0444);
+MODULE_PARM_DESC(wireless, "Set initial state of Wireless hardware");
+MODULE_PARM_DESC(bluetooth, "Set initial state of Bluetooth hardware");
+MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
+MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
+MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
+MODULE_PARM_DESC(force_series, "Force a different laptop series");
+
+struct acer_data {
+        int mailled;
+        int wireless;
+        int bluetooth;
+        int threeg;
+        int brightness;
+};
+
+/* Each low-level interface must define at least some of the following */
+struct wmi_interface {
+        /* The WMI device type */
+        u32 type;
+
+        /* The capabilities this interface provides */
+        u32 capability;
+
+        /* Private data for the current interface */
+        struct acer_data data;
+};
+
+/* The static interface pointer, points to the currently detected interface */
+static struct wmi_interface *interface;
+
+/*
+ * Embedded Controller quirks
+ * Some laptops require us to directly access the EC to either enable or query
+ * features that are not available through WMI.
+ */
+
+struct quirk_entry {
+        u8 wireless;
+        u8 mailled;
+        u8 brightness;
+        u8 bluetooth;
+};
+
+static struct quirk_entry *quirks;
+
+static void set_quirks(void)
+{
+        if (quirks->mailled)
+                interface->capability |= ACER_CAP_MAILLED;
+
+        if (quirks->brightness)
+                interface->capability |= ACER_CAP_BRIGHTNESS;
+}
+
+static int dmi_matched(const struct dmi_system_id *dmi)
+{
+        quirks = dmi->driver_data;
+        return 0;
+}
+
+static struct quirk_entry quirk_unknown = {
+};
+
+static struct quirk_entry quirk_acer_travelmate_2490 = {
+        .mailled = 1,
+};
+
+/* This AMW0 laptop has no bluetooth */
+static struct quirk_entry quirk_medion_md_98300 = {
+        .wireless = 1,
+};
+
+static struct dmi_system_id acer_quirks[] = {
+        {
+                .callback = dmi_matched,
+                .ident = "Acer Aspire 3100",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
+                },
+                .driver_data = &quirk_acer_travelmate_2490,
+        },
+        {
+                .callback = dmi_matched,
+                .ident = "Acer Aspire 5100",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
+                },
+                .driver_data = &quirk_acer_travelmate_2490,
+        },
+        {
+                .callback = dmi_matched,
+                .ident = "Acer Aspire 5630",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
+                },
+                .driver_data = &quirk_acer_travelmate_2490,
+        },
+        {
+                .callback = dmi_matched,
+                .ident = "Acer Aspire 5650",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
+                },
+                .driver_data = &quirk_acer_travelmate_2490,
+        },
+        {
+                .callback = dmi_matched,
+                .ident = "Acer Aspire 5680",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
+                },
+                .driver_data = &quirk_acer_travelmate_2490,
+        },
+        {
+                .callback = dmi_matched,
+                .ident = "Acer Aspire 9110",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
+                },
+                .driver_data = &quirk_acer_travelmate_2490,
+        },
+        {
+                .callback = dmi_matched,
+                .ident = "Acer TravelMate 2490",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
+                },
+                .driver_data = &quirk_acer_travelmate_2490,
+        },
+        {
+                .callback = dmi_matched,
+                .ident = "Medion MD 98300",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
+                },
+                .driver_data = &quirk_medion_md_98300,
+        },
+        {}
+};
+
+/* Find which quirks are needed for a particular vendor/ model pair */
+static void find_quirks(void)
+{
+        if (!force_series) {
+                dmi_check_system(acer_quirks);
+        } else if (force_series == 2490) {
+                quirks = &quirk_acer_travelmate_2490;
+        }
+
+        if (quirks == NULL)
+                quirks = &quirk_unknown;
+
+        set_quirks();
+}
+
+/*
+ * General interface convenience methods
+ */
+
+static bool has_cap(u32 cap)
+{
+        if ((interface->capability & cap) != 0)
+                return 1;
+
+        return 0;
+}
+
+/*
+ * AMW0 (V1) interface
+ */
+struct wmab_args {
+        u32 eax;
+        u32 ebx;
+        u32 ecx;
+        u32 edx;
+};
+
+struct wmab_ret {
+        u32 eax;
+        u32 ebx;
+        u32 ecx;
+        u32 edx;
+        u32 eex;
+};
+
+static acpi_status wmab_execute(struct wmab_args *regbuf,
+struct acpi_buffer *result)
+{
+        struct acpi_buffer input;
+        acpi_status status;
+        input.length = sizeof(struct wmab_args);
+        input.pointer = (u8 *)regbuf;
+
+        status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
+
+        return status;
+}
+
+static acpi_status AMW0_get_u32(u32 *value, u32 cap,
+struct wmi_interface *iface)
+{
+        int err;
+        u8 result;
+
+        switch (cap) {
+        case ACER_CAP_MAILLED:
+                switch (quirks->mailled) {
+                default:
+                        err = ec_read(0xA, &result);
+                        if (err)
+                                return AE_ERROR;
+                        *value = (result >> 7) & 0x1;
+                        return AE_OK;
+                }
+                break;
+        case ACER_CAP_WIRELESS:
+                switch (quirks->wireless) {
+                case 1:
+                        err = ec_read(0x7B, &result);
+                        if (err)
+                                return AE_ERROR;
+                        *value = result & 0x1;
+                        return AE_OK;
+                default:
+                        err = ec_read(0xA, &result);
+                        if (err)
+                                return AE_ERROR;
+                        *value = (result >> 2) & 0x1;
+                        return AE_OK;
+                }
+                break;
+        case ACER_CAP_BLUETOOTH:
+                switch (quirks->bluetooth) {
+                default:
+                        err = ec_read(0xA, &result);
+                        if (err)
+                                return AE_ERROR;
+                        *value = (result >> 4) & 0x1;
+                        return AE_OK;
+                }
+                break;
+        case ACER_CAP_BRIGHTNESS:
+                switch (quirks->brightness) {
+                default:
+                        err = ec_read(0x83, &result);
+                        if (err)
+                                return AE_ERROR;
+                        *value = result;
+                        return AE_OK;
+                }
+                break;
+        default:
+                return AE_BAD_ADDRESS;
+        }
+        return AE_OK;
+}
+
+static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
+{
+        struct wmab_args args;
+
+        args.eax = ACER_AMW0_WRITE;
+        args.ebx = value ? (1<<8) : 0;
+        args.ecx = args.edx = 0;
+
+        switch (cap) {
+        case ACER_CAP_MAILLED:
+                if (value > 1)
+                        return AE_BAD_PARAMETER;
+                args.ebx |= ACER_AMW0_MAILLED_MASK;
+                break;
+        case ACER_CAP_WIRELESS:
+                if (value > 1)
+                        return AE_BAD_PARAMETER;
+                args.ebx |= ACER_AMW0_WIRELESS_MASK;
+                break;
+        case ACER_CAP_BLUETOOTH:
+                if (value > 1)
+                        return AE_BAD_PARAMETER;
+                args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
+                break;
+        case ACER_CAP_BRIGHTNESS:
+                if (value > max_brightness)
+                        return AE_BAD_PARAMETER;
+                switch (quirks->brightness) {
+                case 1:
+                        return ec_write(0x83, value);
+                default:
+                        return AE_BAD_ADDRESS;
+                break;
+                }
+        default:
+                return AE_BAD_ADDRESS;
+        }
+
+        /* Actually do the set */
+        return wmab_execute(&args, NULL);
+}
+
+static acpi_status AMW0_find_mailled(void)
+{
+        struct wmab_args args;
+        struct wmab_ret ret;
+        acpi_status status = AE_OK;
+        struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
+        union acpi_object *obj;
+
+        args.eax = 0x86;
+        args.ebx = args.ecx = args.edx = 0;
+
+        status = wmab_execute(&args, &out);
+        if (ACPI_FAILURE(status))
+                return status;
+
+        obj = (union acpi_object *) out.pointer;
+        if (obj && obj->type == ACPI_TYPE_BUFFER &&
+        obj->buffer.length == sizeof(struct wmab_ret)) {
+                ret = *((struct wmab_ret *) obj->buffer.pointer);
+        } else {
+                return AE_ERROR;
+        }
+
+        if (ret.eex & 0x1)
+                interface->capability |= ACER_CAP_MAILLED;
+
+        kfree(out.pointer);
+
+        return AE_OK;
+}
+
+static acpi_status AMW0_set_capabilities(void)
+{
+        struct wmab_args args;
+        struct wmab_ret ret;
+        acpi_status status = AE_OK;
+        struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
+        union acpi_object *obj;
+
+        args.eax = ACER_AMW0_WRITE;
+        args.ecx = args.edx = 0;
+
+        args.ebx = 0xa2 << 8;
+        args.ebx |= ACER_AMW0_WIRELESS_MASK;
+
+        status = wmab_execute(&args, &out);
+        if (ACPI_FAILURE(status))
+                return status;
+
+        obj = (union acpi_object *) out.pointer;
+        if (obj && obj->type == ACPI_TYPE_BUFFER &&
+        obj->buffer.length == sizeof(struct wmab_ret)) {
+                ret = *((struct wmab_ret *) obj->buffer.pointer);
+        } else {
+                return AE_ERROR;
+        }
+
+        if (ret.eax & 0x1)
+                interface->capability |= ACER_CAP_WIRELESS;
+
+        args.ebx = 2 << 8;
+        args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
+
+        status = wmab_execute(&args, &out);
+        if (ACPI_FAILURE(status))
+                return status;
+
+        obj = (union acpi_object *) out.pointer;
+        if (obj && obj->type == ACPI_TYPE_BUFFER
+        && obj->buffer.length == sizeof(struct wmab_ret)) {
+                ret = *((struct wmab_ret *) obj->buffer.pointer);
+        } else {
+                return AE_ERROR;
+        }
+
+        if (ret.eax & 0x1)
+                interface->capability |= ACER_CAP_BLUETOOTH;
+
+        kfree(out.pointer);
+
+        /*
+         * This appears to be safe to enable, since all Wistron based laptops
+         * appear to use the same EC register for brightness, even if they
+         * differ for wireless, etc
+         */
+        interface->capability |= ACER_CAP_BRIGHTNESS;
+
+        return AE_OK;
+}
+
+static struct wmi_interface AMW0_interface = {
+        .type = ACER_AMW0,
+};
+
+static struct wmi_interface AMW0_V2_interface = {
+        .type = ACER_AMW0_V2,
+};
+
+/*
+ * New interface (The WMID interface)
+ */
+static acpi_status
+WMI_execute_u32(u32 method_id, u32 in, u32 *out)
+{
+        struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
+        struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
+        union acpi_object *obj;
+        u32 tmp;
+        acpi_status status;
+
+        status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
+
+        if (ACPI_FAILURE(status))
+                return status;
+
+        obj = (union acpi_object *) result.pointer;
+        if (obj && obj->type == ACPI_TYPE_BUFFER &&
+                obj->buffer.length == sizeof(u32)) {
+                tmp = *((u32 *) obj->buffer.pointer);
+        } else {
+                tmp = 0;
+        }
+
+        if (out)
+                *out = tmp;
+
+        kfree(result.pointer);
+
+        return status;
+}
+
+static acpi_status WMID_get_u32(u32 *value, u32 cap,
+struct wmi_interface *iface)
+{
+        acpi_status status;
+        u8 tmp;
+        u32 result, method_id = 0;
+
+        switch (cap) {
+        case ACER_CAP_WIRELESS:
+                method_id = ACER_WMID_GET_WIRELESS_METHODID;
+                break;
+        case ACER_CAP_BLUETOOTH:
+                method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
+                break;
+        case ACER_CAP_BRIGHTNESS:
+                method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
+                break;
+        case ACER_CAP_THREEG:
+                method_id = ACER_WMID_GET_THREEG_METHODID;
+                break;
+        case ACER_CAP_MAILLED:
+                if (quirks->mailled == 1) {
+                        ec_read(0x9f, &tmp);
+                        *value = tmp & 0x1;
+                        return 0;
+                }
+        default:
+                return AE_BAD_ADDRESS;
+        }
+        status = WMI_execute_u32(method_id, 0, &result);
+
+        if (ACPI_SUCCESS(status))
+                *value = (u8)result;
+
+        return status;
+}
+
+static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
+{
+        u32 method_id = 0;
+        char param;
+
+        switch (cap) {
+        case ACER_CAP_BRIGHTNESS:
+                if (value > max_brightness)
+                        return AE_BAD_PARAMETER;
+                method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
+                break;
+        case ACER_CAP_WIRELESS:
+                if (value > 1)
+                        return AE_BAD_PARAMETER;
+                method_id = ACER_WMID_SET_WIRELESS_METHODID;
+                break;
+        case ACER_CAP_BLUETOOTH:
+                if (value > 1)
+                        return AE_BAD_PARAMETER;
+                method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
+                break;
+        case ACER_CAP_THREEG:
+                if (value > 1)
+                        return AE_BAD_PARAMETER;
+                method_id = ACER_WMID_SET_THREEG_METHODID;
+                break;
+        case ACER_CAP_MAILLED:
+                if (value > 1)
+                        return AE_BAD_PARAMETER;
+                if (quirks->mailled == 1) {
+                        param = value ? 0x92 : 0x93;
+                        i8042_command(&param, 0x1059);
+                        return 0;
+                }
+                break;
+        default:
+                return AE_BAD_ADDRESS;
+        }
+        return WMI_execute_u32(method_id, (u32)value, NULL);
+}
+
+static acpi_status WMID_set_capabilities(void)
+{
+        struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
+        union acpi_object *obj;
+        acpi_status status;
+        u32 devices;
+
+        status = wmi_query_block(WMID_GUID2, 1, &out);
+        if (ACPI_FAILURE(status))
+                return status;
+
+        obj = (union acpi_object *) out.pointer;
+        if (obj && obj->type == ACPI_TYPE_BUFFER &&
+                obj->buffer.length == sizeof(u32)) {
+                devices = *((u32 *) obj->buffer.pointer);
+        } else {
+                return AE_ERROR;
+        }
+
+        /* Not sure on the meaning of the relevant bits yet to detect these */
+        interface->capability |= ACER_CAP_WIRELESS;
+        interface->capability |= ACER_CAP_THREEG;
+
+        /* WMID always provides brightness methods */
+        interface->capability |= ACER_CAP_BRIGHTNESS;
+
+        if (devices & 0x10)
+                interface->capability |= ACER_CAP_BLUETOOTH;
+
+        if (!(devices & 0x20))
+                max_brightness = 0x9;
+
+        return status;
+}
+
+static struct wmi_interface wmid_interface = {
+        .type = ACER_WMID,
+};
+
+/*
+ * Generic Device (interface-independent)
+ */
+
+static acpi_status get_u32(u32 *value, u32 cap)
+{
+        acpi_status status = AE_BAD_ADDRESS;
+
+        switch (interface->type) {
+        case ACER_AMW0:
+                status = AMW0_get_u32(value, cap, interface);
+                break;
+        case ACER_AMW0_V2:
+                if (cap == ACER_CAP_MAILLED) {
+                        status = AMW0_get_u32(value, cap, interface);
+                        break;
+                }
+        case ACER_WMID:
+                status = WMID_get_u32(value, cap, interface);
+                break;
+        }
+
+        return status;
+}
+
+static acpi_status set_u32(u32 value, u32 cap)
+{
+        if (interface->capability & cap) {
+                switch (interface->type) {
+                case ACER_AMW0:
+                        return AMW0_set_u32(value, cap, interface);
+                case ACER_AMW0_V2:
+                case ACER_WMID:
+                        return WMID_set_u32(value, cap, interface);
+                default:
+                        return AE_BAD_PARAMETER;
+                }
+        }
+        return AE_BAD_PARAMETER;
+}
+
+static void __init acer_commandline_init(void)
+{
+        /*
+         * These will all fail silently if the value given is invalid, or the
+         * capability isn't available on the given interface
+         */
+        set_u32(mailled, ACER_CAP_MAILLED);
+        set_u32(wireless, ACER_CAP_WIRELESS);
+        set_u32(bluetooth, ACER_CAP_BLUETOOTH);
+        set_u32(threeg, ACER_CAP_THREEG);
+        set_u32(brightness, ACER_CAP_BRIGHTNESS);
+}
+
+/*
+ * LED device (Mail LED only, no other LEDs known yet)
+ */
+static void mail_led_set(struct led_classdev *led_cdev,
+enum led_brightness value)
+{
+        set_u32(value, ACER_CAP_MAILLED);
+}
+
+static struct led_classdev mail_led = {
+        .name = "acer-mail:green",
+        .brightness_set = mail_led_set,
+};
+
+static int __init acer_led_init(struct device *dev)
+{
+        return led_classdev_register(dev, &mail_led);
+}
+
+static void acer_led_exit(void)
+{
+        led_classdev_unregister(&mail_led);
+}
+
+/*
+ * Backlight device
+ */
+static struct backlight_device *acer_backlight_device;
+
+static int read_brightness(struct backlight_device *bd)
+{
+        u32 value;
+        get_u32(&value, ACER_CAP_BRIGHTNESS);
+        return value;
+}
+
+static int update_bl_status(struct backlight_device *bd)
+{
+        set_u32(bd->props.brightness, ACER_CAP_BRIGHTNESS);
+        return 0;
+}
+
+static struct backlight_ops acer_bl_ops = {
+        .get_brightness = read_brightness,
+        .update_status = update_bl_status,
+};
+
+static int __init acer_backlight_init(struct device *dev)
+{
+        struct backlight_device *bd;
+
+        bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops);
+        if (IS_ERR(bd)) {
+                printk(ACER_ERR "Could not register Acer backlight device\n");
+                acer_backlight_device = NULL;
+                return PTR_ERR(bd);
+        }
+
+        acer_backlight_device = bd;
+
+        bd->props.max_brightness = max_brightness;
+        bd->props.brightness = read_brightness(NULL);
+        backlight_update_status(bd);
+        return 0;
+}
+
+static void __exit acer_backlight_exit(void)
+{
+        backlight_device_unregister(acer_backlight_device);
+}
+
+/*
+ * Read/ write bool sysfs macro
+ */
+#define show_set_bool(value, cap) \
+static ssize_t \
+show_bool_##value(struct device *dev, struct device_attribute *attr, \
+        char *buf) \
+{ \
+        u32 result; \
+        acpi_status status = get_u32(&result, cap); \
+        if (ACPI_SUCCESS(status)) \
+                return sprintf(buf, "%u\n", result); \
+        return sprintf(buf, "Read error\n"); \
+} \
+\
+static ssize_t \
+set_bool_##value(struct device *dev, struct device_attribute *attr, \
+        const char *buf, size_t count) \
+{ \
+        u32 tmp = simple_strtoul(buf, NULL, 10); \
+        acpi_status status = set_u32(tmp, cap); \
+                if (ACPI_FAILURE(status)) \
+                        return -EINVAL; \
+        return count; \
+} \
+static DEVICE_ATTR(value, S_IWUGO | S_IRUGO | S_IWUSR, \
+        show_bool_##value, set_bool_##value);
+
+show_set_bool(wireless, ACER_CAP_WIRELESS);
+show_set_bool(bluetooth, ACER_CAP_BLUETOOTH);
+show_set_bool(threeg, ACER_CAP_THREEG);
+
+/*
+ * Read interface sysfs macro
+ */
+static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
+        char *buf)
+{
+        switch (interface->type) {
+        case ACER_AMW0:
+                return sprintf(buf, "AMW0\n");
+        case ACER_AMW0_V2:
+                return sprintf(buf, "AMW0 v2\n");
+        case ACER_WMID:
+                return sprintf(buf, "WMID\n");
+        default:
+                return sprintf(buf, "Error!\n");
+        }
+}
+
+static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR,
+        show_interface, NULL);
+
+/*
+ * Platform device
+ */
+static int __devinit acer_platform_probe(struct platform_device *device)
+{
+        int err;
+
+        if (has_cap(ACER_CAP_MAILLED)) {
+                err = acer_led_init(&device->dev);
+                if (err)
+                        goto error_mailled;
+        }
+
+        if (has_cap(ACER_CAP_BRIGHTNESS)) {
+                err = acer_backlight_init(&device->dev);
+                if (err)
+                        goto error_brightness;
+        }
+
+        return 0;
+
+error_brightness:
+        acer_led_exit();
+error_mailled:
+        return err;
+}
+
+static int acer_platform_remove(struct platform_device *device)
+{
+        if (has_cap(ACER_CAP_MAILLED))
+                acer_led_exit();
+        if (has_cap(ACER_CAP_BRIGHTNESS))
+                acer_backlight_exit();
+        return 0;
+}
+
+static int acer_platform_suspend(struct platform_device *dev,
+pm_message_t state)
+{
+        u32 value;
+        struct acer_data *data = &interface->data;
+
+        if (!data)
+                return -ENOMEM;
+
+        if (has_cap(ACER_CAP_WIRELESS)) {
+                get_u32(&value, ACER_CAP_WIRELESS);
+                data->wireless = value;
+        }
+
+        if (has_cap(ACER_CAP_BLUETOOTH)) {
+                get_u32(&value, ACER_CAP_BLUETOOTH);
+                data->bluetooth = value;
+        }
+
+        if (has_cap(ACER_CAP_MAILLED)) {
+                get_u32(&value, ACER_CAP_MAILLED);
+                data->mailled = value;
+        }
+
+        if (has_cap(ACER_CAP_BRIGHTNESS)) {
+                get_u32(&value, ACER_CAP_BRIGHTNESS);
+                data->brightness = value;
+        }
+
+        return 0;
+}
+
+static int acer_platform_resume(struct platform_device *device)
+{
+        struct acer_data *data = &interface->data;
+
+        if (!data)
+                return -ENOMEM;
+
+        if (has_cap(ACER_CAP_WIRELESS))
+                set_u32(data->wireless, ACER_CAP_WIRELESS);
+
+        if (has_cap(ACER_CAP_BLUETOOTH))
+                set_u32(data->bluetooth, ACER_CAP_BLUETOOTH);
+
+        if (has_cap(ACER_CAP_THREEG))
+                set_u32(data->threeg, ACER_CAP_THREEG);
+
+        if (has_cap(ACER_CAP_MAILLED))
+                set_u32(data->mailled, ACER_CAP_MAILLED);
+
+        if (has_cap(ACER_CAP_BRIGHTNESS))
+                set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
+
+        return 0;
+}
+
+static struct platform_driver acer_platform_driver = {
+        .driver = {
+                .name = "acer-wmi",
+                .owner = THIS_MODULE,
+        },
+        .probe = acer_platform_probe,
+        .remove = acer_platform_remove,
+        .suspend = acer_platform_suspend,
+        .resume = acer_platform_resume,
+};
+
+static struct platform_device *acer_platform_device;
+
+static int remove_sysfs(struct platform_device *device)
+{
+        if (has_cap(ACER_CAP_WIRELESS))
+                device_remove_file(&device->dev, &dev_attr_wireless);
+
+        if (has_cap(ACER_CAP_BLUETOOTH))
+                device_remove_file(&device->dev, &dev_attr_bluetooth);
+
+        if (has_cap(ACER_CAP_THREEG))
+                device_remove_file(&device->dev, &dev_attr_threeg);
+
+        device_remove_file(&device->dev, &dev_attr_interface);
+
+        return 0;
+}
+
+static int create_sysfs(void)
+{
+        int retval = -ENOMEM;
+
+        if (has_cap(ACER_CAP_WIRELESS)) {
+                retval = device_create_file(&acer_platform_device->dev,
+                        &dev_attr_wireless);
+                if (retval)
+                        goto error_sysfs;
+        }
+
+        if (has_cap(ACER_CAP_BLUETOOTH)) {
+                retval = device_create_file(&acer_platform_device->dev,
+                        &dev_attr_bluetooth);
+                if (retval)
+                        goto error_sysfs;
+        }
+
+        if (has_cap(ACER_CAP_THREEG)) {
+                retval = device_create_file(&acer_platform_device->dev,
+                        &dev_attr_threeg);
+                if (retval)
+                        goto error_sysfs;
+        }
+
+        retval = device_create_file(&acer_platform_device->dev,
+                &dev_attr_interface);
+        if (retval)
+                goto error_sysfs;
+
+        return 0;
+
+error_sysfs:
+                remove_sysfs(acer_platform_device);
+        return retval;
+}
+
+static int __init acer_wmi_init(void)
+{
+        int err;
+
+        printk(ACER_INFO "Acer Laptop ACPI-WMI Extras version %s\n",
+                        ACER_WMI_VERSION);
+
+        /*
+         * Detect which ACPI-WMI interface we're using.
+         */
+        if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
+                interface = &AMW0_V2_interface;
+
+        if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
+                interface = &wmid_interface;
+
+        if (wmi_has_guid(WMID_GUID2) && interface) {
+                if (ACPI_FAILURE(WMID_set_capabilities())) {
+                        printk(ACER_ERR "Unable to detect available devices\n");
+                        return -ENODEV;
+                }
+        } else if (!wmi_has_guid(WMID_GUID2) && interface) {
+                printk(ACER_ERR "Unable to detect available devices\n");
+                return -ENODEV;
+        }
+
+        if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
+                interface = &AMW0_interface;
+
+                if (ACPI_FAILURE(AMW0_set_capabilities())) {
+                        printk(ACER_ERR "Unable to detect available devices\n");
+                        return -ENODEV;
+                }
+        }
+
+        if (wmi_has_guid(AMW0_GUID1)) {
+                if (ACPI_FAILURE(AMW0_find_mailled()))
+                        printk(ACER_ERR "Unable to detect mail LED\n");
+        }
+
+        find_quirks();
+
+        if (!interface) {
+                printk(ACER_ERR "No or unsupported WMI interface, unable to ");
+                printk(KERN_CONT "load.\n");
+                return -ENODEV;
+        }
+
+        if (platform_driver_register(&acer_platform_driver)) {
+                printk(ACER_ERR "Unable to register platform driver.\n");
+                goto error_platform_register;
+        }
+        acer_platform_device = platform_device_alloc("acer-wmi", -1);
+        platform_device_add(acer_platform_device);
+
+        err = create_sysfs();
+        if (err)
+                return err;
+
+        /* Override any initial settings with values from the commandline */
+        acer_commandline_init();
+
+        return 0;
+
+error_platform_register:
+        return -ENODEV;
+}
+
+static void __exit acer_wmi_exit(void)
+{
+        remove_sysfs(acer_platform_device);
+        platform_device_del(acer_platform_device);
+        platform_driver_unregister(&acer_platform_driver);
+
+        printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
+        return;
+}
+
+module_init(acer_wmi_init);
+module_exit(acer_wmi_exit);
diff --git a/drivers/misc/asus-laptop.c b/drivers/misc/asus-laptop.c
index 3a36a294e91b..7c6dfd03de9f 100644
--- a/drivers/misc/asus-laptop.c
+++ b/drivers/misc/asus-laptop.c
@@ -254,7 +254,7 @@ ASUS_LED(gled, "gaming");
  * method is searched within the scope of the handle, can be NULL. The output
  * of the method is written is output, which can also be NULL
  *
- * returns 1 if write is successful, 0 else.
+ * returns 0 if write is successful, -1 else.
  */
 static int write_acpi_int(acpi_handle handle, const char *method, int val,
                           struct acpi_buffer *output)
@@ -263,13 +263,19 @@ static int write_acpi_int(acpi_handle handle, const char *method, int val,
         union acpi_object in_obj;       //the only param we use
         acpi_status status;
 
+        if (!handle)
+                return 0;
+
         params.count = 1;
         params.pointer = &in_obj;
         in_obj.type = ACPI_TYPE_INTEGER;
         in_obj.integer.value = val;
 
         status = acpi_evaluate_object(handle, (char *)method, &params, output);
-        return (status == AE_OK);
+        if (status == AE_OK)
+                return 0;
+        else
+                return -1;
 }
 
 static int read_wireless_status(int mask)
@@ -321,7 +327,7 @@ static void write_status(acpi_handle handle, int out, int mask)
 
         switch (mask) {
         case MLED_ON:
-                out = !out & 0x1;
+                out = !(out & 0x1);
                 break;
         case GLED_ON:
                 out = (out & 0x1) + 1;
@@ -335,7 +341,7 @@ static void write_status(acpi_handle handle, int out, int mask)
                 break;
         }
 
-        if (handle && !write_acpi_int(handle, NULL, out, NULL))
+        if (write_acpi_int(handle, NULL, out, NULL))
                 printk(ASUS_WARNING " write failed %x\n", mask);
 }
 
@@ -415,7 +421,7 @@ static int set_brightness(struct backlight_device *bd, int value)
         value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
         /* 0 <= value <= 15 */
 
-        if (!write_acpi_int(brightness_set_handle, NULL, value, NULL)) {
+        if (write_acpi_int(brightness_set_handle, NULL, value, NULL)) {
                 printk(ASUS_WARNING "Error changing brightness\n");
                 ret = -EIO;
         }
@@ -545,7 +551,7 @@ static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
 
         rv = parse_arg(buf, count, &value);
         if (rv > 0) {
-                if (!write_acpi_int(ledd_set_handle, NULL, value, NULL))
+                if (write_acpi_int(ledd_set_handle, NULL, value, NULL))
                         printk(ASUS_WARNING "LED display write failed\n");
                 else
                         hotk->ledd_status = (u32) value;
@@ -590,7 +596,7 @@ static ssize_t store_bluetooth(struct device *dev,
 static void set_display(int value)
 {
         /* no sanity check needed for now */
-        if (!write_acpi_int(display_set_handle, NULL, value, NULL))
+        if (write_acpi_int(display_set_handle, NULL, value, NULL))
                 printk(ASUS_WARNING "Error setting display\n");
         return;
 }
@@ -647,7 +653,7 @@ static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
  */
 static void set_light_sens_switch(int value)
 {
-        if (!write_acpi_int(ls_switch_handle, NULL, value, NULL))
+        if (write_acpi_int(ls_switch_handle, NULL, value, NULL))
                 printk(ASUS_WARNING "Error setting light sensor switch\n");
         hotk->light_switch = value;
 }
@@ -672,7 +678,7 @@ static ssize_t store_lssw(struct device *dev, struct device_attribute *attr,
 
 static void set_light_sens_level(int value)
 {
-        if (!write_acpi_int(ls_level_handle, NULL, value, NULL))
+        if (write_acpi_int(ls_level_handle, NULL, value, NULL))
                 printk(ASUS_WARNING "Error setting light sensor level\n");
         hotk->light_level = value;
 }
@@ -860,7 +866,7 @@ static int asus_hotk_get_info(void)
                 printk(ASUS_WARNING "Couldn't get the DSDT table header\n");
 
         /* We have to write 0 on init this far for all ASUS models */
-        if (!write_acpi_int(hotk->handle, "INIT", 0, &buffer)) {
+        if (write_acpi_int(hotk->handle, "INIT", 0, &buffer)) {
                 printk(ASUS_ERR "Hotkey initialization failed\n");
                 return -ENODEV;
         }
diff --git a/drivers/misc/intel_menlow.c b/drivers/misc/intel_menlow.c
new file mode 100644
index 000000000000..f70984ab1e1b
--- /dev/null
+++ b/drivers/misc/intel_menlow.c
@@ -0,0 +1,526 @@
+/*
+ *  intel_menlow.c - Intel menlow Driver for thermal management extension
+ *
+ *  Copyright (C) 2008 Intel Corp
+ *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
+ *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
+ *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful, but
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This driver creates the sys I/F for programming the sensors.
+ *  It also implements the driver for intel menlow memory controller (hardware
+ *  id is INT0002) which makes use of the platform specific ACPI methods
+ *  to get/set bandwidth.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/pm.h>
+
+#include <linux/thermal.h>
+#include <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
+
+MODULE_AUTHOR("Thomas Sujith");
+MODULE_AUTHOR("Zhang Rui");
+MODULE_DESCRIPTION("Intel Menlow platform specific driver");
+MODULE_LICENSE("GPL");
+
+/*
+ * Memory controller device control
+ */
+
+#define MEMORY_GET_BANDWIDTH "GTHS"
+#define MEMORY_SET_BANDWIDTH "STHS"
+#define MEMORY_ARG_CUR_BANDWIDTH 1
+#define MEMORY_ARG_MAX_BANDWIDTH 0
+
+static int memory_get_int_max_bandwidth(struct thermal_cooling_device *cdev,
+                                        unsigned long *max_state)
+{
+        struct acpi_device *device = cdev->devdata;
+        acpi_handle handle = device->handle;
+        unsigned long value;
+        struct acpi_object_list arg_list;
+        union acpi_object arg;
+        acpi_status status = AE_OK;
+
+        arg_list.count = 1;
+        arg_list.pointer = &arg;
+        arg.type = ACPI_TYPE_INTEGER;
+        arg.integer.value = MEMORY_ARG_MAX_BANDWIDTH;
+        status = acpi_evaluate_integer(handle, MEMORY_GET_BANDWIDTH,
+                                       &arg_list, &value);
+        if (ACPI_FAILURE(status))
+                return -EFAULT;
+
+        *max_state = value - 1;
+        return 0;
+}
+
+static int memory_get_max_bandwidth(struct thermal_cooling_device *cdev,
+                                    char *buf)
+{
+        unsigned long value;
+        if (memory_get_int_max_bandwidth(cdev, &value))
+                return -EINVAL;
+
+        return sprintf(buf, "%ld\n", value);
+}
+
+static int memory_get_cur_bandwidth(struct thermal_cooling_device *cdev,
+                                    char *buf)
+{
+        struct acpi_device *device = cdev->devdata;
+        acpi_handle handle = device->handle;
+        unsigned long value;
+        struct acpi_object_list arg_list;
+        union acpi_object arg;
+        acpi_status status = AE_OK;
+
+        arg_list.count = 1;
+        arg_list.pointer = &arg;
+        arg.type = ACPI_TYPE_INTEGER;
+        arg.integer.value = MEMORY_ARG_CUR_BANDWIDTH;
+        status = acpi_evaluate_integer(handle, MEMORY_GET_BANDWIDTH,
+                                       &arg_list, &value);
+        if (ACPI_FAILURE(status))
+                return -EFAULT;
+
+        return sprintf(buf, "%ld\n", value);
+}
+
+static int memory_set_cur_bandwidth(struct thermal_cooling_device *cdev,
+                                    unsigned int state)
+{
+        struct acpi_device *device = cdev->devdata;
+        acpi_handle handle = device->handle;
+        struct acpi_object_list arg_list;
+        union acpi_object arg;
+        acpi_status status;
+        int temp;
+        unsigned long max_state;
+
+        if (memory_get_int_max_bandwidth(cdev, &max_state))
+                return -EFAULT;
+
+        if (max_state < 0 || state > max_state)
+                return -EINVAL;
+
+        arg_list.count = 1;
+        arg_list.pointer = &arg;
+        arg.type = ACPI_TYPE_INTEGER;
+        arg.integer.value = state;
+
+        status =
+            acpi_evaluate_integer(handle, MEMORY_SET_BANDWIDTH, &arg_list,
+                                  (unsigned long *)&temp);
+
+        printk(KERN_INFO
+               "Bandwidth value was %d: status is %d\n", state, status);
+        if (ACPI_FAILURE(status))
+                return -EFAULT;
+
+        return 0;
+}
+
+static struct thermal_cooling_device_ops memory_cooling_ops = {
+        .get_max_state = memory_get_max_bandwidth,
+        .get_cur_state = memory_get_cur_bandwidth,
+        .set_cur_state = memory_set_cur_bandwidth,
+};
+
+/*
+ * Memory Device Management
+ */
+static int intel_menlow_memory_add(struct acpi_device *device)
+{
+        int result = -ENODEV;
+        acpi_status status = AE_OK;
+        acpi_handle dummy;
+        struct thermal_cooling_device *cdev;
+
+        if (!device)
+                return -EINVAL;
+
+        status = acpi_get_handle(device->handle, MEMORY_GET_BANDWIDTH, &dummy);
+        if (ACPI_FAILURE(status))
+                goto end;
+
+        status = acpi_get_handle(device->handle, MEMORY_SET_BANDWIDTH, &dummy);
+        if (ACPI_FAILURE(status))
+                goto end;
+
+        cdev = thermal_cooling_device_register("Memory controller", device,
+                                               &memory_cooling_ops);
+        acpi_driver_data(device) = cdev;
+        if (!cdev)
+                result = -ENODEV;
+        else {
+                result = sysfs_create_link(&device->dev.kobj,
+                                        &cdev->device.kobj, "thermal_cooling");
+                if (result)
+                        goto unregister;
+
+                result = sysfs_create_link(&cdev->device.kobj,
+                                        &device->dev.kobj, "device");
+                if (result) {
+                        sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
+                        goto unregister;
+                }
+        }
+
+ end:
+        return result;
+
+ unregister:
+        thermal_cooling_device_unregister(cdev);
+        return result;
+
+}
+
+static int intel_menlow_memory_remove(struct acpi_device *device, int type)
+{
+        struct thermal_cooling_device *cdev = acpi_driver_data(device);
+
+        if (!device || !cdev)
+                return -EINVAL;
+
+        sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
+        sysfs_remove_link(&cdev->device.kobj, "device");
+        thermal_cooling_device_unregister(cdev);
+
+        return 0;
+}
+
+const static struct acpi_device_id intel_menlow_memory_ids[] = {
+        {"INT0002", 0},
+        {"", 0},
+};
+
+static struct acpi_driver intel_menlow_memory_driver = {
+        .name = "intel_menlow_thermal_control",
+        .ids = intel_menlow_memory_ids,
+        .ops = {
+                .add = intel_menlow_memory_add,
+                .remove = intel_menlow_memory_remove,
+                },
+};
+
+/*
+ * Sensor control on menlow platform
+ */
+
+#define THERMAL_AUX0 0
+#define THERMAL_AUX1 1
+#define GET_AUX0 "GAX0"
+#define GET_AUX1 "GAX1"
+#define SET_AUX0 "SAX0"
+#define SET_AUX1 "SAX1"
+
+struct intel_menlow_attribute {
+        struct device_attribute attr;
+        struct device *device;
+        acpi_handle handle;
+        struct list_head node;
+};
+
+static LIST_HEAD(intel_menlow_attr_list);
+static DEFINE_MUTEX(intel_menlow_attr_lock);
+
+/*
+ * sensor_get_auxtrip - get the current auxtrip value from sensor
+ * @name: Thermalzone name
+ * @auxtype : AUX0/AUX1
+ * @buf: syfs buffer
+ */
+static int sensor_get_auxtrip(acpi_handle handle, int index, int *value)
+{
+        acpi_status status;
+
+        if ((index != 0 && index != 1) || !value)
+                return -EINVAL;
+
+        status = acpi_evaluate_integer(handle, index ? GET_AUX1 : GET_AUX0,
+                                       NULL, (unsigned long *)value);
+        if (ACPI_FAILURE(status))
+                return -EIO;
+
+        return 0;
+}
+
+/*
+ * sensor_set_auxtrip - set the new auxtrip value to sensor
+ * @name: Thermalzone name
+ * @auxtype : AUX0/AUX1
+ * @buf: syfs buffer
+ */
+static int sensor_set_auxtrip(acpi_handle handle, int index, int value)
+{
+        acpi_status status;
+        union acpi_object arg = {
+                ACPI_TYPE_INTEGER
+        };
+        struct acpi_object_list args = {
+                1, &arg
+        };
+        int temp;
+
+        if (index != 0 && index != 1)
+                return -EINVAL;
+
+        status = acpi_evaluate_integer(handle, index ? GET_AUX0 : GET_AUX1,
+                                       NULL, (unsigned long *)&temp);
+        if (ACPI_FAILURE(status))
+                return -EIO;
+        if ((index && value < temp) || (!index && value > temp))
+                return -EINVAL;
+
+        arg.integer.value = value;
+        status = acpi_evaluate_integer(handle, index ? SET_AUX1 : SET_AUX0,
+                                       &args, (unsigned long *)&temp);
+        if (ACPI_FAILURE(status))
+                return -EIO;
+
+        /* do we need to check the return value of SAX0/SAX1 ? */
+
+        return 0;
+}
+
+#define to_intel_menlow_attr(_attr)     \
+        container_of(_attr, struct intel_menlow_attribute, attr)
+
+static ssize_t aux0_show(struct device *dev,
+                         struct device_attribute *dev_attr, char *buf)
+{
+        struct intel_menlow_attribute *attr = to_intel_menlow_attr(dev_attr);
+        int value;
+        int result;
+
+        result = sensor_get_auxtrip(attr->handle, 0, &value);
+
+        return result ? result : sprintf(buf, "%lu", KELVIN_TO_CELSIUS(value));
+}
+
+static ssize_t aux1_show(struct device *dev,
+                         struct device_attribute *dev_attr, char *buf)
+{
+        struct intel_menlow_attribute *attr = to_intel_menlow_attr(dev_attr);
+        int value;
+        int result;
+
+        result = sensor_get_auxtrip(attr->handle, 1, &value);
+
+        return result ? result : sprintf(buf, "%lu", KELVIN_TO_CELSIUS(value));
+}
+
+static ssize_t aux0_store(struct device *dev,
+                          struct device_attribute *dev_attr,
+                          const char *buf, size_t count)
+{
+        struct intel_menlow_attribute *attr = to_intel_menlow_attr(dev_attr);
+        int value;
+        int result;
+
+        /*Sanity check; should be a positive integer */
+        if (!sscanf(buf, "%d", &value))
+                return -EINVAL;
+
+        if (value < 0)
+                return -EINVAL;
+
+        result = sensor_set_auxtrip(attr->handle, 0, CELSIUS_TO_KELVIN(value));
+        return result ? result : count;
+}
+
+static ssize_t aux1_store(struct device *dev,
+                          struct device_attribute *dev_attr,
+                          const char *buf, size_t count)
+{
+        struct intel_menlow_attribute *attr = to_intel_menlow_attr(dev_attr);
+        int value;
+        int result;
+
+        /*Sanity check; should be a positive integer */
+        if (!sscanf(buf, "%d", &value))
+                return -EINVAL;
+
+        if (value < 0)
+                return -EINVAL;
+
+        result = sensor_set_auxtrip(attr->handle, 1, CELSIUS_TO_KELVIN(value));
+        return result ? result : count;
+}
+
+/* BIOS can enable/disable the thermal user application in dabney platform */
+#define BIOS_ENABLED "\\_TZ.GSTS"
+static ssize_t bios_enabled_show(struct device *dev,
+                                 struct device_attribute *attr, char *buf)
+{
+        acpi_status status;
+        unsigned long bios_enabled;
+
+        status = acpi_evaluate_integer(NULL, BIOS_ENABLED, NULL, &bios_enabled);
+        if (ACPI_FAILURE(status))
+                return -ENODEV;
+
+        return sprintf(buf, "%s\n", bios_enabled ? "enabled" : "disabled");
+}
+
+static int intel_menlow_add_one_attribute(char *name, int mode, void *show,
+                                          void *store, struct device *dev,
+                                          acpi_handle handle)
+{
+        struct intel_menlow_attribute *attr;
+        int result;
+
+        attr = kzalloc(sizeof(struct intel_menlow_attribute), GFP_KERNEL);
+        if (!attr)
+                return -ENOMEM;
+
+        attr->attr.attr.name = name;
+        attr->attr.attr.mode = mode;
+        attr->attr.show = show;
+        attr->attr.store = store;
+        attr->device = dev;
+        attr->handle = handle;
+
+        result = device_create_file(dev, &attr->attr);
+        if (result)
+                return result;
+
+        mutex_lock(&intel_menlow_attr_lock);
+        list_add_tail(&attr->node, &intel_menlow_attr_list);
+        mutex_unlock(&intel_menlow_attr_lock);
+
+        return 0;
+}
+
+static acpi_status intel_menlow_register_sensor(acpi_handle handle, u32 lvl,
+                                                void *context, void **rv)
+{
+        acpi_status status;
+        acpi_handle dummy;
+        struct thermal_zone_device *thermal;
+        int result;
+
+        result = acpi_bus_get_private_data(handle, (void **)&thermal);
+        if (result)
+                return 0;
+
+        /* _TZ must have the AUX0/1 methods */
+        status = acpi_get_handle(handle, GET_AUX0, &dummy);
+        if (ACPI_FAILURE(status))
+                goto not_found;
+
+        status = acpi_get_handle(handle, SET_AUX0, &dummy);
+        if (ACPI_FAILURE(status))
+                goto not_found;
+
+        result = intel_menlow_add_one_attribute("aux0", 0644,
+                                                aux0_show, aux0_store,
+                                                &thermal->device, handle);
+        if (result)
+                return AE_ERROR;
+
+        status = acpi_get_handle(handle, GET_AUX1, &dummy);
+        if (ACPI_FAILURE(status))
+                goto not_found;
+
+        status = acpi_get_handle(handle, SET_AUX1, &dummy);
+        if (ACPI_FAILURE(status))
+                goto not_found;
+
+        result = intel_menlow_add_one_attribute("aux1", 0644,
+                                                aux1_show, aux1_store,
+                                                &thermal->device, handle);
+        if (result)
+                return AE_ERROR;
+
+        /*
+         * create the "dabney_enabled" attribute which means the user app
+         * should be loaded or not
+         */
+
+        result = intel_menlow_add_one_attribute("bios_enabled", 0444,
+                                                bios_enabled_show, NULL,
+                                                &thermal->device, handle);
+        if (result)
+                return AE_ERROR;
+
+ not_found:
+        if (status == AE_NOT_FOUND)
+                return AE_OK;
+        else
+                return status;
+}
+
+static void intel_menlow_unregister_sensor(void)
+{
+        struct intel_menlow_attribute *pos, *next;
+
+        mutex_lock(&intel_menlow_attr_lock);
+        list_for_each_entry_safe(pos, next, &intel_menlow_attr_list, node) {
+                list_del(&pos->node);
+                device_remove_file(pos->device, &pos->attr);
+                kfree(pos);
+        }
+        mutex_unlock(&intel_menlow_attr_lock);
+
+        return;
+}
+
+static int __init intel_menlow_module_init(void)
+{
+        int result = -ENODEV;
+        acpi_status status;
+        unsigned long enable;
+
+        if (acpi_disabled)
+                return result;
+
+        /* Looking for the \_TZ.GSTS method */
+        status = acpi_evaluate_integer(NULL, BIOS_ENABLED, NULL, &enable);
+        if (ACPI_FAILURE(status) || !enable)
+                return -ENODEV;
+
+        /* Looking for ACPI device MEM0 with hardware id INT0002 */
+        result = acpi_bus_register_driver(&intel_menlow_memory_driver);
+        if (result)
+                return result;
+
+        /* Looking for sensors in each ACPI thermal zone */
+        status = acpi_walk_namespace(ACPI_TYPE_THERMAL, ACPI_ROOT_OBJECT,
+                                     ACPI_UINT32_MAX,
+                                     intel_menlow_register_sensor, NULL, NULL);
+        if (ACPI_FAILURE(status))
+                return -ENODEV;
+
+        return 0;
+}
+
+static void __exit intel_menlow_module_exit(void)
+{
+        acpi_bus_unregister_driver(&intel_menlow_memory_driver);
+        intel_menlow_unregister_sensor();
+}
+
+module_init(intel_menlow_module_init);
+module_exit(intel_menlow_module_exit);
diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c
index b0f68031b49d..899e3f75f288 100644
--- a/drivers/misc/sony-laptop.c
+++ b/drivers/misc/sony-laptop.c
@@ -73,7 +73,7 @@
         if (debug) printk(KERN_WARNING DRV_PFX  msg);   \
 } while (0)
 
-#define SONY_LAPTOP_DRIVER_VERSION      "0.5"
+#define SONY_LAPTOP_DRIVER_VERSION      "0.6"
 
 #define SONY_NC_CLASS           "sony-nc"
 #define SONY_NC_HID             "SNY5001"
@@ -146,68 +146,70 @@ struct sony_laptop_keypress {
  * and input layer indexes in the keymap
  */
 static int sony_laptop_input_index[] = {
-        -1,     /* no event */
-        -1,     /* SONYPI_EVENT_JOGDIAL_DOWN */
-        -1,     /* SONYPI_EVENT_JOGDIAL_UP */
-        -1,     /* SONYPI_EVENT_JOGDIAL_DOWN_PRESSED */
-        -1,     /* SONYPI_EVENT_JOGDIAL_UP_PRESSED */
-        -1,     /* SONYPI_EVENT_JOGDIAL_PRESSED */
-        -1,     /* SONYPI_EVENT_JOGDIAL_RELEASED */
-         0,     /* SONYPI_EVENT_CAPTURE_PRESSED */
-         1,     /* SONYPI_EVENT_CAPTURE_RELEASED */
-         2,     /* SONYPI_EVENT_CAPTURE_PARTIALPRESSED */
-         3,     /* SONYPI_EVENT_CAPTURE_PARTIALRELEASED */
-         4,     /* SONYPI_EVENT_FNKEY_ESC */
-         5,     /* SONYPI_EVENT_FNKEY_F1 */
-         6,     /* SONYPI_EVENT_FNKEY_F2 */
-         7,     /* SONYPI_EVENT_FNKEY_F3 */
-         8,     /* SONYPI_EVENT_FNKEY_F4 */
-         9,     /* SONYPI_EVENT_FNKEY_F5 */
-        10,     /* SONYPI_EVENT_FNKEY_F6 */
-        11,     /* SONYPI_EVENT_FNKEY_F7 */
-        12,     /* SONYPI_EVENT_FNKEY_F8 */
-        13,     /* SONYPI_EVENT_FNKEY_F9 */
-        14,     /* SONYPI_EVENT_FNKEY_F10 */
-        15,     /* SONYPI_EVENT_FNKEY_F11 */
-        16,     /* SONYPI_EVENT_FNKEY_F12 */
-        17,     /* SONYPI_EVENT_FNKEY_1 */
-        18,     /* SONYPI_EVENT_FNKEY_2 */
-        19,     /* SONYPI_EVENT_FNKEY_D */
-        20,     /* SONYPI_EVENT_FNKEY_E */
-        21,     /* SONYPI_EVENT_FNKEY_F */
-        22,     /* SONYPI_EVENT_FNKEY_S */
-        23,     /* SONYPI_EVENT_FNKEY_B */
-        24,     /* SONYPI_EVENT_BLUETOOTH_PRESSED */
-        25,     /* SONYPI_EVENT_PKEY_P1 */
-        26,     /* SONYPI_EVENT_PKEY_P2 */
-        27,     /* SONYPI_EVENT_PKEY_P3 */
-        28,     /* SONYPI_EVENT_BACK_PRESSED */
-        -1,     /* SONYPI_EVENT_LID_CLOSED */
-        -1,     /* SONYPI_EVENT_LID_OPENED */
-        29,     /* SONYPI_EVENT_BLUETOOTH_ON */
-        30,     /* SONYPI_EVENT_BLUETOOTH_OFF */
-        31,     /* SONYPI_EVENT_HELP_PRESSED */
-        32,     /* SONYPI_EVENT_FNKEY_ONLY */
-        33,     /* SONYPI_EVENT_JOGDIAL_FAST_DOWN */
-        34,     /* SONYPI_EVENT_JOGDIAL_FAST_UP */
-        35,     /* SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED */
-        36,     /* SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED */
-        37,     /* SONYPI_EVENT_JOGDIAL_VFAST_DOWN */
-        38,     /* SONYPI_EVENT_JOGDIAL_VFAST_UP */
-        39,     /* SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED */
-        40,     /* SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED */
-        41,     /* SONYPI_EVENT_ZOOM_PRESSED */
-        42,     /* SONYPI_EVENT_THUMBPHRASE_PRESSED */
-        43,     /* SONYPI_EVENT_MEYE_FACE */
-        44,     /* SONYPI_EVENT_MEYE_OPPOSITE */
-        45,     /* SONYPI_EVENT_MEMORYSTICK_INSERT */
-        46,     /* SONYPI_EVENT_MEMORYSTICK_EJECT */
-        -1,     /* SONYPI_EVENT_ANYBUTTON_RELEASED */
-        -1,     /* SONYPI_EVENT_BATTERY_INSERT */
-        -1,     /* SONYPI_EVENT_BATTERY_REMOVE */
-        -1,     /* SONYPI_EVENT_FNKEY_RELEASED */
-        47,     /* SONYPI_EVENT_WIRELESS_ON */
-        48,     /* SONYPI_EVENT_WIRELESS_OFF */
+        -1,     /*  0 no event */
+        -1,     /*  1 SONYPI_EVENT_JOGDIAL_DOWN */
+        -1,     /*  2 SONYPI_EVENT_JOGDIAL_UP */
+        -1,     /*  3 SONYPI_EVENT_JOGDIAL_DOWN_PRESSED */
+        -1,     /*  4 SONYPI_EVENT_JOGDIAL_UP_PRESSED */
+        -1,     /*  5 SONYPI_EVENT_JOGDIAL_PRESSED */
+        -1,     /*  6 SONYPI_EVENT_JOGDIAL_RELEASED */
+         0,     /*  7 SONYPI_EVENT_CAPTURE_PRESSED */
+         1,     /*  8 SONYPI_EVENT_CAPTURE_RELEASED */
+         2,     /*  9 SONYPI_EVENT_CAPTURE_PARTIALPRESSED */
+         3,     /* 10 SONYPI_EVENT_CAPTURE_PARTIALRELEASED */
+         4,     /* 11 SONYPI_EVENT_FNKEY_ESC */
+         5,     /* 12 SONYPI_EVENT_FNKEY_F1 */
+         6,     /* 13 SONYPI_EVENT_FNKEY_F2 */
+         7,     /* 14 SONYPI_EVENT_FNKEY_F3 */
+         8,     /* 15 SONYPI_EVENT_FNKEY_F4 */
+         9,     /* 16 SONYPI_EVENT_FNKEY_F5 */
+        10,     /* 17 SONYPI_EVENT_FNKEY_F6 */
+        11,     /* 18 SONYPI_EVENT_FNKEY_F7 */
+        12,     /* 19 SONYPI_EVENT_FNKEY_F8 */
+        13,     /* 20 SONYPI_EVENT_FNKEY_F9 */
+        14,     /* 21 SONYPI_EVENT_FNKEY_F10 */
+        15,     /* 22 SONYPI_EVENT_FNKEY_F11 */
+        16,     /* 23 SONYPI_EVENT_FNKEY_F12 */
+        17,     /* 24 SONYPI_EVENT_FNKEY_1 */
+        18,     /* 25 SONYPI_EVENT_FNKEY_2 */
+        19,     /* 26 SONYPI_EVENT_FNKEY_D */
+        20,     /* 27 SONYPI_EVENT_FNKEY_E */
+        21,     /* 28 SONYPI_EVENT_FNKEY_F */
+        22,     /* 29 SONYPI_EVENT_FNKEY_S */
+        23,     /* 30 SONYPI_EVENT_FNKEY_B */
+        24,     /* 31 SONYPI_EVENT_BLUETOOTH_PRESSED */
+        25,     /* 32 SONYPI_EVENT_PKEY_P1 */
+        26,     /* 33 SONYPI_EVENT_PKEY_P2 */
+        27,     /* 34 SONYPI_EVENT_PKEY_P3 */
+        28,     /* 35 SONYPI_EVENT_BACK_PRESSED */
+        -1,     /* 36 SONYPI_EVENT_LID_CLOSED */
+        -1,     /* 37 SONYPI_EVENT_LID_OPENED */
+        29,     /* 38 SONYPI_EVENT_BLUETOOTH_ON */
+        30,     /* 39 SONYPI_EVENT_BLUETOOTH_OFF */
+        31,     /* 40 SONYPI_EVENT_HELP_PRESSED */
+        32,     /* 41 SONYPI_EVENT_FNKEY_ONLY */
+        33,     /* 42 SONYPI_EVENT_JOGDIAL_FAST_DOWN */
+        34,     /* 43 SONYPI_EVENT_JOGDIAL_FAST_UP */
+        35,     /* 44 SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED */
+        36,     /* 45 SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED */
+        37,     /* 46 SONYPI_EVENT_JOGDIAL_VFAST_DOWN */
+        38,     /* 47 SONYPI_EVENT_JOGDIAL_VFAST_UP */
+        39,     /* 48 SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED */
+        40,     /* 49 SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED */
+        41,     /* 50 SONYPI_EVENT_ZOOM_PRESSED */
+        42,     /* 51 SONYPI_EVENT_THUMBPHRASE_PRESSED */
+        43,     /* 52 SONYPI_EVENT_MEYE_FACE */
+        44,     /* 53 SONYPI_EVENT_MEYE_OPPOSITE */
+        45,     /* 54 SONYPI_EVENT_MEMORYSTICK_INSERT */
+        46,     /* 55 SONYPI_EVENT_MEMORYSTICK_EJECT */
+        -1,     /* 56 SONYPI_EVENT_ANYBUTTON_RELEASED */
+        -1,     /* 57 SONYPI_EVENT_BATTERY_INSERT */
+        -1,     /* 58 SONYPI_EVENT_BATTERY_REMOVE */
+        -1,     /* 59 SONYPI_EVENT_FNKEY_RELEASED */
+        47,     /* 60 SONYPI_EVENT_WIRELESS_ON */
+        48,     /* 61 SONYPI_EVENT_WIRELESS_OFF */
+        49,     /* 62 SONYPI_EVENT_ZOOM_IN_PRESSED */
+        50,     /* 63 SONYPI_EVENT_ZOOM_OUT_PRESSED */
 };
 
 static int sony_laptop_input_keycode_map[] = {
@@ -260,6 +262,8 @@ static int sony_laptop_input_keycode_map[] = {
         KEY_RESERVED,   /* 46 SONYPI_EVENT_MEMORYSTICK_EJECT */
         KEY_WLAN,       /* 47 SONYPI_EVENT_WIRELESS_ON */
         KEY_WLAN,       /* 48 SONYPI_EVENT_WIRELESS_OFF */
+        KEY_ZOOMIN,     /* 49 SONYPI_EVENT_ZOOM_IN_PRESSED */
+        KEY_ZOOMOUT     /* 50 SONYPI_EVENT_ZOOM_OUT_PRESSED */
 };
 
 /* release buttons after a short delay if pressed */
@@ -311,7 +315,7 @@ static void sony_laptop_report_input_event(u8 event)
                 break;
 
         default:
-                if (event > ARRAY_SIZE (sony_laptop_input_keycode_map)) {
+                if (event > ARRAY_SIZE(sony_laptop_input_index)) {
                         dprintk("sony_laptop_report_input_event, event not known: %d\n", event);
                         break;
                 }
@@ -875,6 +879,15 @@ static const struct dmi_system_id sony_nc_ids[] = {
                                 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-C"),
                         },
                 },
+                {
+                        .ident = "Sony Vaio N Series",
+                        .callback = sony_nc_C_enable,
+                        .driver_data = sony_C_events,
+                        .matches = {
+                                DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+                                DMI_MATCH(DMI_PRODUCT_NAME, "VGN-N"),
+                        },
+                },
                 { }
 };
 
@@ -1169,10 +1182,12 @@ static struct acpi_driver sony_nc_driver = {
 #define SONYPI_DEVICE_TYPE1     0x00000001
 #define SONYPI_DEVICE_TYPE2     0x00000002
 #define SONYPI_DEVICE_TYPE3     0x00000004
+#define SONYPI_DEVICE_TYPE4     0x00000008
 
 #define SONYPI_TYPE1_OFFSET     0x04
 #define SONYPI_TYPE2_OFFSET     0x12
 #define SONYPI_TYPE3_OFFSET     0x12
+#define SONYPI_TYPE4_OFFSET     0x12
 
 struct sony_pic_ioport {
         struct acpi_resource_io io1;
@@ -1185,18 +1200,33 @@ struct sony_pic_irq {
         struct list_head                list;
 };
 
+struct sonypi_eventtypes {
+        u8                      data;
+        unsigned long           mask;
+        struct sonypi_event     *events;
+};
+
+struct device_ctrl {
+        int                             model;
+        int                             (*handle_irq)(const u8, const u8);
+        u16                             evport_offset;
+        u8                              has_camera;
+        u8                              has_bluetooth;
+        u8                              has_wwan;
+        struct sonypi_eventtypes        *event_types;
+};
+
 struct sony_pic_dev {
-        int                     model;
-        u16                     evport_offset;
-        u8                      camera_power;
-        u8                      bluetooth_power;
-        u8                      wwan_power;
+        struct device_ctrl      *control;
         struct acpi_device      *acpi_dev;
         struct sony_pic_irq     *cur_irq;
         struct sony_pic_ioport  *cur_ioport;
         struct list_head        interrupts;
         struct list_head        ioports;
         struct mutex            lock;
+        u8                      camera_power;
+        u8                      bluetooth_power;
+        u8                      wwan_power;
 };
 
 static struct sony_pic_dev spic_dev = {
@@ -1253,6 +1283,7 @@ static struct sonypi_event sonypi_joggerev[] = {
 static struct sonypi_event sonypi_captureev[] = {
         { 0x05, SONYPI_EVENT_CAPTURE_PARTIALPRESSED },
         { 0x07, SONYPI_EVENT_CAPTURE_PRESSED },
+        { 0x40, SONYPI_EVENT_CAPTURE_PRESSED },
         { 0x01, SONYPI_EVENT_CAPTURE_PARTIALRELEASED },
         { 0, 0 }
 };
@@ -1289,7 +1320,6 @@ static struct sonypi_event sonypi_pkeyev[] = {
         { 0x01, SONYPI_EVENT_PKEY_P1 },
         { 0x02, SONYPI_EVENT_PKEY_P2 },
         { 0x04, SONYPI_EVENT_PKEY_P3 },
-        { 0x5c, SONYPI_EVENT_PKEY_P1 },
         { 0, 0 }
 };
 
@@ -1331,6 +1361,8 @@ static struct sonypi_event sonypi_lidev[] = {
 /* The set of possible zoom events */
 static struct sonypi_event sonypi_zoomev[] = {
         { 0x39, SONYPI_EVENT_ZOOM_PRESSED },
+        { 0x10, SONYPI_EVENT_ZOOM_IN_PRESSED },
+        { 0x20, SONYPI_EVENT_ZOOM_OUT_PRESSED },
         { 0, 0 }
 };
 
@@ -1361,76 +1393,58 @@ static struct sonypi_event sonypi_batteryev[] = {
         { 0, 0 }
 };
 
-static struct sonypi_eventtypes {
-        int                     model;
-        u8                      data;
-        unsigned long           mask;
-        struct sonypi_event *   events;
-} sony_pic_eventtypes[] = {
-        { SONYPI_DEVICE_TYPE1, 0, 0xffffffff, sonypi_releaseev },
-        { SONYPI_DEVICE_TYPE1, 0x70, SONYPI_MEYE_MASK, sonypi_meyeev },
-        { SONYPI_DEVICE_TYPE1, 0x30, SONYPI_LID_MASK, sonypi_lidev },
-        { SONYPI_DEVICE_TYPE1, 0x60, SONYPI_CAPTURE_MASK, sonypi_captureev },
-        { SONYPI_DEVICE_TYPE1, 0x10, SONYPI_JOGGER_MASK, sonypi_joggerev },
-        { SONYPI_DEVICE_TYPE1, 0x20, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
-        { SONYPI_DEVICE_TYPE1, 0x30, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
-        { SONYPI_DEVICE_TYPE1, 0x40, SONYPI_PKEY_MASK, sonypi_pkeyev },
-        { SONYPI_DEVICE_TYPE1, 0x30, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
-        { SONYPI_DEVICE_TYPE1, 0x40, SONYPI_BATTERY_MASK, sonypi_batteryev },
-
-        { SONYPI_DEVICE_TYPE2, 0, 0xffffffff, sonypi_releaseev },
-        { SONYPI_DEVICE_TYPE2, 0x38, SONYPI_LID_MASK, sonypi_lidev },
-        { SONYPI_DEVICE_TYPE2, 0x11, SONYPI_JOGGER_MASK, sonypi_joggerev },
-        { SONYPI_DEVICE_TYPE2, 0x61, SONYPI_CAPTURE_MASK, sonypi_captureev },
-        { SONYPI_DEVICE_TYPE2, 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
-        { SONYPI_DEVICE_TYPE2, 0x31, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
-        { SONYPI_DEVICE_TYPE2, 0x08, SONYPI_PKEY_MASK, sonypi_pkeyev },
-        { SONYPI_DEVICE_TYPE2, 0x11, SONYPI_BACK_MASK, sonypi_backev },
-        { SONYPI_DEVICE_TYPE2, 0x21, SONYPI_HELP_MASK, sonypi_helpev },
-        { SONYPI_DEVICE_TYPE2, 0x21, SONYPI_ZOOM_MASK, sonypi_zoomev },
-        { SONYPI_DEVICE_TYPE2, 0x20, SONYPI_THUMBPHRASE_MASK, sonypi_thumbphraseev },
-        { SONYPI_DEVICE_TYPE2, 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
-        { SONYPI_DEVICE_TYPE2, 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
-        { SONYPI_DEVICE_TYPE2, 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
-
-        { SONYPI_DEVICE_TYPE3, 0, 0xffffffff, sonypi_releaseev },
-        { SONYPI_DEVICE_TYPE3, 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
-        { SONYPI_DEVICE_TYPE3, 0x31, SONYPI_WIRELESS_MASK, sonypi_wlessev },
-        { SONYPI_DEVICE_TYPE3, 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
-        { SONYPI_DEVICE_TYPE3, 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
-        { SONYPI_DEVICE_TYPE3, 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
-        { 0 }
+static struct sonypi_eventtypes type1_events[] = {
+        { 0, 0xffffffff, sonypi_releaseev },
+        { 0x70, SONYPI_MEYE_MASK, sonypi_meyeev },
+        { 0x30, SONYPI_LID_MASK, sonypi_lidev },
+        { 0x60, SONYPI_CAPTURE_MASK, sonypi_captureev },
+        { 0x10, SONYPI_JOGGER_MASK, sonypi_joggerev },
+        { 0x20, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
+        { 0x30, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
+        { 0x40, SONYPI_PKEY_MASK, sonypi_pkeyev },
+        { 0x30, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
+        { 0x40, SONYPI_BATTERY_MASK, sonypi_batteryev },
+        { 0 },
+};
+static struct sonypi_eventtypes type2_events[] = {
+        { 0, 0xffffffff, sonypi_releaseev },
+        { 0x38, SONYPI_LID_MASK, sonypi_lidev },
+        { 0x11, SONYPI_JOGGER_MASK, sonypi_joggerev },
+        { 0x61, SONYPI_CAPTURE_MASK, sonypi_captureev },
+        { 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
+        { 0x31, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
+        { 0x08, SONYPI_PKEY_MASK, sonypi_pkeyev },
+        { 0x11, SONYPI_BACK_MASK, sonypi_backev },
+        { 0x21, SONYPI_HELP_MASK, sonypi_helpev },
+        { 0x21, SONYPI_ZOOM_MASK, sonypi_zoomev },
+        { 0x20, SONYPI_THUMBPHRASE_MASK, sonypi_thumbphraseev },
+        { 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
+        { 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
+        { 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
+        { 0 },
+};
+static struct sonypi_eventtypes type3_events[] = {
+        { 0, 0xffffffff, sonypi_releaseev },
+        { 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
+        { 0x31, SONYPI_WIRELESS_MASK, sonypi_wlessev },
+        { 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
+        { 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
+        { 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
+        { 0 },
+};
+static struct sonypi_eventtypes type4_events[] = {
+        { 0, 0xffffffff, sonypi_releaseev },
+        { 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
+        { 0x31, SONYPI_WIRELESS_MASK, sonypi_wlessev },
+        { 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
+        { 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
+        { 0x05, SONYPI_PKEY_MASK, sonypi_pkeyev },
+        { 0x05, SONYPI_ZOOM_MASK, sonypi_zoomev },
+        { 0x05, SONYPI_CAPTURE_MASK, sonypi_captureev },
+        { 0 },
 };
 
-static int sony_pic_detect_device_type(void)
-{
-        struct pci_dev *pcidev;
-        int model = 0;
-
-        if ((pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
-                                     PCI_DEVICE_ID_INTEL_82371AB_3, NULL)))
-                model = SONYPI_DEVICE_TYPE1;
-
-        else if ((pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
-                                          PCI_DEVICE_ID_INTEL_ICH6_1, NULL)))
-                model = SONYPI_DEVICE_TYPE3;
-
-        else if ((pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
-                                          PCI_DEVICE_ID_INTEL_ICH7_1, NULL)))
-                model = SONYPI_DEVICE_TYPE3;
-
-        else
-                model = SONYPI_DEVICE_TYPE2;
-
-        if (pcidev)
-                pci_dev_put(pcidev);
-
-        printk(KERN_INFO DRV_PFX "detected Type%d model\n",
-                        model == SONYPI_DEVICE_TYPE1 ? 1 :
-                        model == SONYPI_DEVICE_TYPE2 ? 2 : 3);
-        return model;
-}
-
+/* low level spic calls */
 #define ITERATIONS_LONG         10000
 #define ITERATIONS_SHORT        10
 #define wait_on_command(command, iterations) {                          \
@@ -1451,7 +1465,7 @@ static u8 sony_pic_call1(u8 dev)
         outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
         v1 = inb_p(spic_dev.cur_ioport->io1.minimum + 4);
         v2 = inb_p(spic_dev.cur_ioport->io1.minimum);
-        dprintk("sony_pic_call1: 0x%.4x\n", (v2 << 8) | v1);
+        dprintk("sony_pic_call1(0x%.2x): 0x%.4x\n", dev, (v2 << 8) | v1);
         return v2;
 }
 
@@ -1466,7 +1480,7 @@ static u8 sony_pic_call2(u8 dev, u8 fn)
                         ITERATIONS_LONG);
         outb(fn, spic_dev.cur_ioport->io1.minimum);
         v1 = inb_p(spic_dev.cur_ioport->io1.minimum);
-        dprintk("sony_pic_call2: 0x%.4x\n", v1);
+        dprintk("sony_pic_call2(0x%.2x - 0x%.2x): 0x%.4x\n", dev, fn, v1);
         return v1;
 }
 
@@ -1481,10 +1495,105 @@ static u8 sony_pic_call3(u8 dev, u8 fn, u8 v)
         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
         outb(v, spic_dev.cur_ioport->io1.minimum);
         v1 = inb_p(spic_dev.cur_ioport->io1.minimum);
-        dprintk("sony_pic_call3: 0x%.4x\n", v1);
+        dprintk("sony_pic_call3(0x%.2x - 0x%.2x - 0x%.2x): 0x%.4x\n",
+                        dev, fn, v, v1);
         return v1;
 }
 
+/*
+ * minidrivers for SPIC models
+ */
+static int type4_handle_irq(const u8 data_mask, const u8 ev)
+{
+        /*
+         * 0x31 could mean we have to take some extra action and wait for
+         * the next irq for some Type4 models, it will generate a new
+         * irq and we can read new data from the device:
+         *  - 0x5c and 0x5f requires 0xA0
+         *  - 0x61 requires 0xB3
+         */
+        if (data_mask == 0x31) {
+                if (ev == 0x5c || ev == 0x5f)
+                        sony_pic_call1(0xA0);
+                else if (ev == 0x61)
+                        sony_pic_call1(0xB3);
+                return 0;
+        }
+        return 1;
+}
+
+static struct device_ctrl spic_types[] = {
+        {
+                .model = SONYPI_DEVICE_TYPE1,
+                .handle_irq = NULL,
+                .evport_offset = SONYPI_TYPE1_OFFSET,
+                .event_types = type1_events,
+        },
+        {
+                .model = SONYPI_DEVICE_TYPE2,
+                .handle_irq = NULL,
+                .evport_offset = SONYPI_TYPE2_OFFSET,
+                .event_types = type2_events,
+        },
+        {
+                .model = SONYPI_DEVICE_TYPE3,
+                .handle_irq = NULL,
+                .evport_offset = SONYPI_TYPE3_OFFSET,
+                .event_types = type3_events,
+        },
+        {
+                .model = SONYPI_DEVICE_TYPE4,
+                .handle_irq = type4_handle_irq,
+                .evport_offset = SONYPI_TYPE4_OFFSET,
+                .event_types = type4_events,
+        },
+};
+
+static void sony_pic_detect_device_type(struct sony_pic_dev *dev)
+{
+        struct pci_dev *pcidev;
+
+        pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
+                        PCI_DEVICE_ID_INTEL_82371AB_3, NULL);
+        if (pcidev) {
+                dev->control = &spic_types[0];
+                goto out;
+        }
+
+        pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
+                        PCI_DEVICE_ID_INTEL_ICH6_1, NULL);
+        if (pcidev) {
+                dev->control = &spic_types[2];
+                goto out;
+        }
+
+        pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
+                        PCI_DEVICE_ID_INTEL_ICH7_1, NULL);
+        if (pcidev) {
+                dev->control = &spic_types[3];
+                goto out;
+        }
+
+        pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
+                        PCI_DEVICE_ID_INTEL_ICH8_4, NULL);
+        if (pcidev) {
+                dev->control = &spic_types[3];
+                goto out;
+        }
+
+        /* default */
+        dev->control = &spic_types[1];
+
+out:
+        if (pcidev)
+                pci_dev_put(pcidev);
+
+        printk(KERN_INFO DRV_PFX "detected Type%d model\n",
+                        dev->control->model == SONYPI_DEVICE_TYPE1 ? 1 :
+                        dev->control->model == SONYPI_DEVICE_TYPE2 ? 2 :
+                        dev->control->model == SONYPI_DEVICE_TYPE3 ? 3 : 4);
+}
+
 /* camera tests and poweron/poweroff */
 #define SONYPI_CAMERA_PICTURE           5
 #define SONYPI_CAMERA_CONTROL           0x10
@@ -2253,7 +2362,7 @@ static int sony_pic_enable(struct acpi_device *device,
         buffer.pointer = resource;
 
         /* setup Type 1 resources */
-        if (spic_dev.model == SONYPI_DEVICE_TYPE1) {
+        if (spic_dev.control->model == SONYPI_DEVICE_TYPE1) {
 
                 /* setup io resources */
                 resource->res1.type = ACPI_RESOURCE_TYPE_IO;
@@ -2335,39 +2444,49 @@ static irqreturn_t sony_pic_irq(int irq, void *dev_id)
         if (dev->cur_ioport->io2.minimum)
                 data_mask = inb_p(dev->cur_ioport->io2.minimum);
         else
-                data_mask = inb_p(dev->cur_ioport->io1.minimum + dev->evport_offset);
+                data_mask = inb_p(dev->cur_ioport->io1.minimum +
+                                dev->control->evport_offset);
 
         dprintk("event ([%.2x] [%.2x]) at port 0x%.4x(+0x%.2x)\n",
-                        ev, data_mask, dev->cur_ioport->io1.minimum, dev->evport_offset);
+                        ev, data_mask, dev->cur_ioport->io1.minimum,
+                        dev->control->evport_offset);
 
         if (ev == 0x00 || ev == 0xff)
                 return IRQ_HANDLED;
 
-        for (i = 0; sony_pic_eventtypes[i].model; i++) {
-
-                if (spic_dev.model != sony_pic_eventtypes[i].model)
-                        continue;
+        for (i = 0; dev->control->event_types[i].mask; i++) {
 
-                if ((data_mask & sony_pic_eventtypes[i].data) !=
-                    sony_pic_eventtypes[i].data)
+                if ((data_mask & dev->control->event_types[i].data) !=
+                    dev->control->event_types[i].data)
                         continue;
 
-                if (!(mask & sony_pic_eventtypes[i].mask))
+                if (!(mask & dev->control->event_types[i].mask))
                         continue;
 
-                for (j = 0; sony_pic_eventtypes[i].events[j].event; j++) {
-                        if (ev == sony_pic_eventtypes[i].events[j].data) {
+                for (j = 0; dev->control->event_types[i].events[j].event; j++) {
+                        if (ev == dev->control->event_types[i].events[j].data) {
                                 device_event =
-                                        sony_pic_eventtypes[i].events[j].event;
+                                        dev->control->
+                                                event_types[i].events[j].event;
                                 goto found;
                         }
                 }
         }
+        /* Still not able to decode the event try to pass
+         * it over to the minidriver
+         */
+        if (dev->control->handle_irq &&
+                        dev->control->handle_irq(data_mask, ev) == 0)
+                return IRQ_HANDLED;
+
+        dprintk("unknown event ([%.2x] [%.2x]) at port 0x%.4x(+0x%.2x)\n",
+                        ev, data_mask, dev->cur_ioport->io1.minimum,
+                        dev->control->evport_offset);
         return IRQ_HANDLED;
 
 found:
         sony_laptop_report_input_event(device_event);
-        acpi_bus_generate_proc_event(spic_dev.acpi_dev, 1, device_event);
+        acpi_bus_generate_proc_event(dev->acpi_dev, 1, device_event);
         sonypi_compat_report_event(device_event);
 
         return IRQ_HANDLED;
@@ -2429,23 +2548,9 @@ static int sony_pic_add(struct acpi_device *device)
 
         spic_dev.acpi_dev = device;
         strcpy(acpi_device_class(device), "sony/hotkey");
-        spic_dev.model = sony_pic_detect_device_type();
+        sony_pic_detect_device_type(&spic_dev);
         mutex_init(&spic_dev.lock);
 
-        /* model specific characteristics */
-        switch(spic_dev.model) {
-                case SONYPI_DEVICE_TYPE1:
-                        spic_dev.evport_offset = SONYPI_TYPE1_OFFSET;
-                        break;
-                case SONYPI_DEVICE_TYPE3:
-                        spic_dev.evport_offset = SONYPI_TYPE3_OFFSET;
-                        break;
-                case SONYPI_DEVICE_TYPE2:
-                default:
-                        spic_dev.evport_offset = SONYPI_TYPE2_OFFSET;
-                        break;
-        }
-
         /* read _PRS resources */
         result = sony_pic_possible_resources(device);
         if (result) {
diff --git a/drivers/misc/tc1100-wmi.c b/drivers/misc/tc1100-wmi.c
new file mode 100644
index 000000000000..f25e4c974dcf
--- /dev/null
+++ b/drivers/misc/tc1100-wmi.c
@@ -0,0 +1,290 @@
+/*
+ *  HP Compaq TC1100 Tablet WMI Extras Driver
+ *
+ *  Copyright (C) 2007 Carlos Corbacho <carlos@strangeworlds.co.uk>
+ *  Copyright (C) 2004 Jamey Hicks <jamey.hicks@hp.com>
+ *  Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
+ *  Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or (at
+ *  your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful, but
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <acpi/acpi.h>
+#include <acpi/actypes.h>
+#include <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
+#include <linux/platform_device.h>
+
+#define GUID "C364AC71-36DB-495A-8494-B439D472A505"
+
+#define TC1100_INSTANCE_WIRELESS                1
+#define TC1100_INSTANCE_JOGDIAL         2
+
+#define TC1100_LOGPREFIX "tc1100-wmi: "
+#define TC1100_INFO KERN_INFO TC1100_LOGPREFIX
+
+MODULE_AUTHOR("Jamey Hicks, Carlos Corbacho");
+MODULE_DESCRIPTION("HP Compaq TC1100 Tablet WMI Extras");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("wmi:C364AC71-36DB-495A-8494-B439D472A505");
+
+static int tc1100_probe(struct platform_device *device);
+static int tc1100_remove(struct platform_device *device);
+static int tc1100_suspend(struct platform_device *device, pm_message_t state);
+static int tc1100_resume(struct platform_device *device);
+
+static struct platform_driver tc1100_driver = {
+        .driver = {
+                .name = "tc1100-wmi",
+                .owner = THIS_MODULE,
+        },
+        .probe = tc1100_probe,
+        .remove = tc1100_remove,
+        .suspend = tc1100_suspend,
+        .resume = tc1100_resume,
+};
+
+static struct platform_device *tc1100_device;
+
+struct tc1100_data {
+        u32 wireless;
+        u32 jogdial;
+};
+
+static struct tc1100_data suspend_data;
+
+/* --------------------------------------------------------------------------
+                                Device Management
+   -------------------------------------------------------------------------- */
+
+static int get_state(u32 *out, u8 instance)
+{
+        u32 tmp;
+        acpi_status status;
+        struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
+        union acpi_object *obj;
+
+        if (!out)
+                return -EINVAL;
+
+        if (instance > 2)
+                return -ENODEV;
+
+        status = wmi_query_block(GUID, instance, &result);
+        if (ACPI_FAILURE(status))
+                return -ENODEV;
+
+        obj = (union acpi_object *) result.pointer;
+        if (obj && obj->type == ACPI_TYPE_BUFFER &&
+                obj->buffer.length == sizeof(u32)) {
+                tmp = *((u32 *) obj->buffer.pointer);
+        } else {
+                tmp = 0;
+        }
+
+        if (result.length > 0 && result.pointer)
+                kfree(result.pointer);
+
+        switch (instance) {
+        case TC1100_INSTANCE_WIRELESS:
+                *out = (tmp == 3) ? 1 : 0;
+                return 0;
+        case TC1100_INSTANCE_JOGDIAL:
+                *out = (tmp == 1) ? 1 : 0;
+                return 0;
+        default:
+                return -ENODEV;
+        }
+}
+
+static int set_state(u32 *in, u8 instance)
+{
+        u32 value;
+        acpi_status status;
+        struct acpi_buffer input;
+
+        if (!in)
+                return -EINVAL;
+
+        if (instance > 2)
+                return -ENODEV;
+
+        switch (instance) {
+        case TC1100_INSTANCE_WIRELESS:
+                value = (*in) ? 1 : 2;
+                break;
+        case TC1100_INSTANCE_JOGDIAL:
+                value = (*in) ? 0 : 1;
+                break;
+        default:
+                return -ENODEV;
+        }
+
+        input.length = sizeof(u32);
+        input.pointer = &value;
+
+        status = wmi_set_block(GUID, instance, &input);
+        if (ACPI_FAILURE(status))
+                return -ENODEV;
+
+        return 0;
+}
+
+/* --------------------------------------------------------------------------
+                                FS Interface (/sys)
+   -------------------------------------------------------------------------- */
+
+/*
+ * Read/ write bool sysfs macro
+ */
+#define show_set_bool(value, instance) \
+static ssize_t \
+show_bool_##value(struct device *dev, struct device_attribute *attr, \
+        char *buf) \
+{ \
+        u32 result; \
+        acpi_status status = get_state(&result, instance); \
+        if (ACPI_SUCCESS(status)) \
+                return sprintf(buf, "%d\n", result); \
+        return sprintf(buf, "Read error\n"); \
+} \
+\
+static ssize_t \
+set_bool_##value(struct device *dev, struct device_attribute *attr, \
+        const char *buf, size_t count) \
+{ \
+        u32 tmp = simple_strtoul(buf, NULL, 10); \
+        acpi_status status = set_state(&tmp, instance); \
+                if (ACPI_FAILURE(status)) \
+                        return -EINVAL; \
+        return count; \
+} \
+static DEVICE_ATTR(value, S_IWUGO | S_IRUGO | S_IWUSR, \
+        show_bool_##value, set_bool_##value);
+
+show_set_bool(wireless, TC1100_INSTANCE_WIRELESS);
+show_set_bool(jogdial, TC1100_INSTANCE_JOGDIAL);
+
+static void remove_fs(void)
+{
+        device_remove_file(&tc1100_device->dev, &dev_attr_wireless);
+        device_remove_file(&tc1100_device->dev, &dev_attr_jogdial);
+}
+
+static int add_fs(void)
+{
+        int ret;
+
+        ret = device_create_file(&tc1100_device->dev, &dev_attr_wireless);
+        if (ret)
+                goto add_sysfs_error;
+
+        ret = device_create_file(&tc1100_device->dev, &dev_attr_jogdial);
+        if (ret)
+                goto add_sysfs_error;
+
+        return ret;
+
+add_sysfs_error:
+        remove_fs();
+        return ret;
+}
+
+/* --------------------------------------------------------------------------
+                                Driver Model
+   -------------------------------------------------------------------------- */
+
+static int tc1100_probe(struct platform_device *device)
+{
+        int result = 0;
+
+        result = add_fs();
+        return result;
+}
+
+
+static int tc1100_remove(struct platform_device *device)
+{
+        remove_fs();
+        return 0;
+}
+
+static int tc1100_suspend(struct platform_device *dev, pm_message_t state)
+{
+        int ret;
+
+        ret = get_state(&suspend_data.wireless, TC1100_INSTANCE_WIRELESS);
+        if (ret)
+                return ret;
+
+        ret = get_state(&suspend_data.jogdial, TC1100_INSTANCE_JOGDIAL);
+        if (ret)
+                return ret;
+
+        return ret;
+}
+
+static int tc1100_resume(struct platform_device *dev)
+{
+        int ret;
+
+        ret = set_state(&suspend_data.wireless, TC1100_INSTANCE_WIRELESS);
+        if (ret)
+                return ret;
+
+        ret = set_state(&suspend_data.jogdial, TC1100_INSTANCE_JOGDIAL);
+        if (ret)
+                return ret;
+
+        return ret;
+}
+
+static int __init tc1100_init(void)
+{
+        int result = 0;
+
+        if (!wmi_has_guid(GUID))
+                return -ENODEV;
+
+        result = platform_driver_register(&tc1100_driver);
+        if (result)
+                return result;
+
+        tc1100_device = platform_device_alloc("tc1100-wmi", -1);
+        platform_device_add(tc1100_device);
+
+        printk(TC1100_INFO "HP Compaq TC1100 Tablet WMI Extras loaded\n");
+
+        return result;
+}
+
+static void __exit tc1100_exit(void)
+{
+        platform_device_del(tc1100_device);
+        platform_driver_unregister(&tc1100_driver);
+
+        printk(TC1100_INFO "HP Compaq TC1100 Tablet WMI Extras unloaded\n");
+}
+
+module_init(tc1100_init);
+module_exit(tc1100_exit);
diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index cf56647a6ca4..7ba1acad5402 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -3,7 +3,7 @@
  *
  *
  *  Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
- *  Copyright (C) 2006-2007 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
+ *  Copyright (C) 2006-2008 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -21,11 +21,13 @@
  *  02110-1301, USA.
  */
 
-#define IBM_VERSION "0.17"
-#define TPACPI_SYSFS_VERSION 0x020000
+#define TPACPI_VERSION "0.19"
+#define TPACPI_SYSFS_VERSION 0x020200
 
 /*
  *  Changelog:
+ *  2007-10-20          changelog trimmed down
+ *
  *  2007-03-27  0.14    renamed to thinkpad_acpi and moved to
  *                      drivers/misc.
  *
@@ -33,89 +35,219 @@
  *                      changelog now lives in git commit history, and will
  *                      not be updated further in-file.
  *
- *  2005-08-17  0.12    fix compilation on 2.6.13-rc kernels
  *  2005-03-17  0.11    support for 600e, 770x
  *                          thanks to Jamie Lentin <lentinj@dial.pipex.com>
- *                      support for 770e, G41
- *                      G40 and G41 don't have a thinklight
- *                      temperatures no longer experimental
- *                      experimental brightness control
- *                      experimental volume control
- *                      experimental fan enable/disable
- *  2005-01-16  0.10    fix module loading on R30, R31
- *  2005-01-16  0.9     support for 570, R30, R31
- *                      ultrabay support on A22p, A3x
- *                      limit arg for cmos, led, beep, drop experimental status
- *                      more capable led control on A21e, A22p, T20-22, X20
- *                      experimental temperatures and fan speed
- *                      experimental embedded controller register dump
- *                      mark more functions as __init, drop incorrect __exit
- *                      use MODULE_VERSION
+ *
+ *  2005-01-16  0.9     use MODULE_VERSION
  *                          thanks to Henrik Brix Andersen <brix@gentoo.org>
  *                      fix parameter passing on module loading
  *                          thanks to Rusty Russell <rusty@rustcorp.com.au>
  *                          thanks to Jim Radford <radford@blackbean.org>
  *  2004-11-08  0.8     fix init error case, don't return from a macro
  *                          thanks to Chris Wright <chrisw@osdl.org>
- *  2004-10-23  0.7     fix module loading on A21e, A22p, T20, T21, X20
- *                      fix led control on A21e
- *  2004-10-19  0.6     use acpi_bus_register_driver() to claim HKEY device
- *  2004-10-18  0.5     thinklight support on A21e, G40, R32, T20, T21, X20
- *                      proc file format changed
- *                      video_switch command
- *                      experimental cmos control
- *                      experimental led control
- *                      experimental acpi sounds
- *  2004-09-16  0.4     support for module parameters
- *                      hotkey mask can be prefixed by 0x
- *                      video output switching
- *                      video expansion control
- *                      ultrabay eject support
- *                      removed lcd brightness/on/off control, didn't work
- *  2004-08-17  0.3     support for R40
- *                      lcd off, brightness control
- *                      thinklight on/off
- *  2004-08-14  0.2     support for T series, X20
- *                      bluetooth enable/disable
- *                      hotkey events disabled by default
- *                      removed fan control, currently useless
- *  2004-08-09  0.1     initial release, support for X series
  */
 
-#include "thinkpad_acpi.h"
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/kthread.h>
+#include <linux/freezer.h>
+#include <linux/delay.h>
+
+#include <linux/nvram.h>
+#include <linux/proc_fs.h>
+#include <linux/sysfs.h>
+#include <linux/backlight.h>
+#include <linux/fb.h>
+#include <linux/platform_device.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/input.h>
+#include <asm/uaccess.h>
+
+#include <linux/dmi.h>
+#include <linux/jiffies.h>
+#include <linux/workqueue.h>
+
+#include <acpi/acpi_drivers.h>
+#include <acpi/acnamesp.h>
+
+#include <linux/pci_ids.h>
+
+
+/* ThinkPad CMOS commands */
+#define TP_CMOS_VOLUME_DOWN     0
+#define TP_CMOS_VOLUME_UP       1
+#define TP_CMOS_VOLUME_MUTE     2
+#define TP_CMOS_BRIGHTNESS_UP   4
+#define TP_CMOS_BRIGHTNESS_DOWN 5
+
+/* NVRAM Addresses */
+enum tp_nvram_addr {
+        TP_NVRAM_ADDR_HK2               = 0x57,
+        TP_NVRAM_ADDR_THINKLIGHT        = 0x58,
+        TP_NVRAM_ADDR_VIDEO             = 0x59,
+        TP_NVRAM_ADDR_BRIGHTNESS        = 0x5e,
+        TP_NVRAM_ADDR_MIXER             = 0x60,
+};
 
-MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
-MODULE_DESCRIPTION(IBM_DESC);
-MODULE_VERSION(IBM_VERSION);
-MODULE_LICENSE("GPL");
+/* NVRAM bit masks */
+enum {
+        TP_NVRAM_MASK_HKT_THINKPAD      = 0x08,
+        TP_NVRAM_MASK_HKT_ZOOM          = 0x20,
+        TP_NVRAM_MASK_HKT_DISPLAY       = 0x40,
+        TP_NVRAM_MASK_HKT_HIBERNATE     = 0x80,
+        TP_NVRAM_MASK_THINKLIGHT        = 0x10,
+        TP_NVRAM_MASK_HKT_DISPEXPND     = 0x30,
+        TP_NVRAM_MASK_HKT_BRIGHTNESS    = 0x20,
+        TP_NVRAM_MASK_LEVEL_BRIGHTNESS  = 0x0f,
+        TP_NVRAM_POS_LEVEL_BRIGHTNESS   = 0,
+        TP_NVRAM_MASK_MUTE              = 0x40,
+        TP_NVRAM_MASK_HKT_VOLUME        = 0x80,
+        TP_NVRAM_MASK_LEVEL_VOLUME      = 0x0f,
+        TP_NVRAM_POS_LEVEL_VOLUME       = 0,
+};
 
-/* Please remove this in year 2009 */
-MODULE_ALIAS("ibm_acpi");
+/* ACPI HIDs */
+#define TPACPI_ACPI_HKEY_HID            "IBM0068"
 
-/*
- * DMI matching for module autoloading
- *
- * See http://thinkwiki.org/wiki/List_of_DMI_IDs
- * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
- *
- * Only models listed in thinkwiki will be supported, so add yours
- * if it is not there yet.
+/* Input IDs */
+#define TPACPI_HKEY_INPUT_PRODUCT       0x5054 /* "TP" */
+#define TPACPI_HKEY_INPUT_VERSION       0x4101
+
+
+/****************************************************************************
+ * Main driver
  */
-#define IBM_BIOS_MODULE_ALIAS(__type) \
-        MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW")
 
-/* Non-ancient thinkpads */
-MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
-MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
+#define TPACPI_NAME "thinkpad"
+#define TPACPI_DESC "ThinkPad ACPI Extras"
+#define TPACPI_FILE TPACPI_NAME "_acpi"
+#define TPACPI_URL "http://ibm-acpi.sf.net/"
+#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
+
+#define TPACPI_PROC_DIR "ibm"
+#define TPACPI_ACPI_EVENT_PREFIX "ibm"
+#define TPACPI_DRVR_NAME TPACPI_FILE
+#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
+
+#define TPACPI_MAX_ACPI_ARGS 3
+
+/* Debugging */
+#define TPACPI_LOG TPACPI_FILE ": "
+#define TPACPI_ERR         KERN_ERR    TPACPI_LOG
+#define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
+#define TPACPI_INFO   KERN_INFO   TPACPI_LOG
+#define TPACPI_DEBUG  KERN_DEBUG  TPACPI_LOG
+
+#define TPACPI_DBG_ALL          0xffff
+#define TPACPI_DBG_ALL          0xffff
+#define TPACPI_DBG_INIT         0x0001
+#define TPACPI_DBG_EXIT         0x0002
+#define dbg_printk(a_dbg_level, format, arg...) \
+        do { if (dbg_level & a_dbg_level) \
+                printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
+        } while (0)
+#ifdef CONFIG_THINKPAD_ACPI_DEBUG
+#define vdbg_printk(a_dbg_level, format, arg...) \
+        dbg_printk(a_dbg_level, format, ## arg)
+static const char *str_supported(int is_supported);
+#else
+#define vdbg_printk(a_dbg_level, format, arg...)
+#endif
 
-/* Ancient thinkpad BIOSes have to be identified by
- * BIOS type or model number, and there are far less
- * BIOS types than model numbers... */
-IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]");
-IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]");
-IBM_BIOS_MODULE_ALIAS("K[U,X-Z]");
+#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
+#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
+#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
+
+
+/****************************************************************************
+ * Driver-wide structs and misc. variables
+ */
+
+struct ibm_struct;
+
+struct tp_acpi_drv_struct {
+        const struct acpi_device_id *hid;
+        struct acpi_driver *driver;
 
-#define __unused __attribute__ ((unused))
+        void (*notify) (struct ibm_struct *, u32);
+        acpi_handle *handle;
+        u32 type;
+        struct acpi_device *device;
+};
+
+struct ibm_struct {
+        char *name;
+
+        int (*read) (char *);
+        int (*write) (char *);
+        void (*exit) (void);
+        void (*resume) (void);
+        void (*suspend) (pm_message_t state);
+
+        struct list_head all_drivers;
+
+        struct tp_acpi_drv_struct *acpi;
+
+        struct {
+                u8 acpi_driver_registered:1;
+                u8 acpi_notify_installed:1;
+                u8 proc_created:1;
+                u8 init_called:1;
+                u8 experimental:1;
+        } flags;
+};
+
+struct ibm_init_struct {
+        char param[32];
+
+        int (*init) (struct ibm_init_struct *);
+        struct ibm_struct *data;
+};
+
+static struct {
+#ifdef CONFIG_THINKPAD_ACPI_BAY
+        u32 bay_status:1;
+        u32 bay_eject:1;
+        u32 bay_status2:1;
+        u32 bay_eject2:1;
+#endif
+        u32 bluetooth:1;
+        u32 hotkey:1;
+        u32 hotkey_mask:1;
+        u32 hotkey_wlsw:1;
+        u32 light:1;
+        u32 light_status:1;
+        u32 bright_16levels:1;
+        u32 wan:1;
+        u32 fan_ctrl_status_undef:1;
+        u32 input_device_registered:1;
+        u32 platform_drv_registered:1;
+        u32 platform_drv_attrs_registered:1;
+        u32 sensors_pdrv_registered:1;
+        u32 sensors_pdrv_attrs_registered:1;
+        u32 sensors_pdev_attrs_registered:1;
+        u32 hotkey_poll_active:1;
+} tp_features;
+
+struct thinkpad_id_data {
+        unsigned int vendor;    /* ThinkPad vendor:
+                                 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
+
+        char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
+        char *ec_version_str;   /* Something like 1ZHT51WW-1.04a */
+
+        u16 bios_model;         /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
+        u16 ec_model;
+
+        char *model_str;
+};
+static struct thinkpad_id_data thinkpad_id;
 
 static enum {
         TPACPI_LIFE_INIT = 0,
@@ -123,6 +255,9 @@ static enum {
         TPACPI_LIFE_EXITING,
 } tpacpi_lifecycle;
 
+static int experimental;
+static u32 dbg_level;
+
 /****************************************************************************
  ****************************************************************************
  *
@@ -137,13 +272,13 @@ static enum {
 
 static acpi_handle root_handle;
 
-#define IBM_HANDLE(object, parent, paths...)                    \
+#define TPACPI_HANDLE(object, parent, paths...)                 \
         static acpi_handle  object##_handle;                    \
         static acpi_handle *object##_parent = &parent##_handle; \
         static char        *object##_path;                      \
         static char        *object##_paths[] = { paths }
 
-IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0",      /* 240, 240x */
+TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0",   /* 240, 240x */
            "\\_SB.PCI.ISA.EC",  /* 570 */
            "\\_SB.PCI0.ISA0.EC0",       /* 600e/x, 770e, 770x */
            "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
@@ -152,20 +287,16 @@ IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0",	/* 240, 240x */
            "\\_SB.PCI0.LPC.EC", /* all others */
            );
 
-IBM_HANDLE(ecrd, ec, "ECRD");   /* 570 */
-IBM_HANDLE(ecwr, ec, "ECWR");   /* 570 */
-
-
-/*************************************************************************
- * Misc ACPI handles
- */
+TPACPI_HANDLE(ecrd, ec, "ECRD");        /* 570 */
+TPACPI_HANDLE(ecwr, ec, "ECWR");        /* 570 */
 
-IBM_HANDLE(cmos, root, "\\UCMS",        /* R50, R50e, R50p, R51, T4x, X31, X40 */
+TPACPI_HANDLE(cmos, root, "\\UCMS",     /* R50, R50e, R50p, R51, */
+                                        /* T4x, X31, X40 */
            "\\CMOS",            /* A3x, G4x, R32, T23, T30, X22-24, X30 */
            "\\CMS",             /* R40, R40e */
            );                   /* all others */
 
-IBM_HANDLE(hkey, ec, "\\_SB.HKEY",      /* 600e/x, 770e, 770x */
+TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY",   /* 600e/x, 770e, 770x */
            "^HKEY",             /* R30, R31 */
            "HKEY",              /* all others */
            );                   /* 570 */
@@ -180,7 +311,7 @@ static int acpi_evalf(acpi_handle handle,
 {
         char *fmt0 = fmt;
         struct acpi_object_list params;
-        union acpi_object in_objs[IBM_MAX_ACPI_ARGS];
+        union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
         struct acpi_buffer result, *resultp;
         union acpi_object out_obj;
         acpi_status status;
@@ -190,7 +321,7 @@ static int acpi_evalf(acpi_handle handle,
         int quiet;
 
         if (!*fmt) {
-                printk(IBM_ERR "acpi_evalf() called with empty format\n");
+                printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
                 return 0;
         }
 
@@ -215,7 +346,7 @@ static int acpi_evalf(acpi_handle handle,
                         break;
                         /* add more types as needed */
                 default:
-                        printk(IBM_ERR "acpi_evalf() called "
+                        printk(TPACPI_ERR "acpi_evalf() called "
                                "with invalid format character '%c'\n", c);
                         return 0;
                 }
@@ -242,29 +373,19 @@ static int acpi_evalf(acpi_handle handle,
                 break;
                 /* add more types as needed */
         default:
-                printk(IBM_ERR "acpi_evalf() called "
+                printk(TPACPI_ERR "acpi_evalf() called "
                        "with invalid format character '%c'\n", res_type);
                 return 0;
         }
 
         if (!success && !quiet)
-                printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
+                printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
                        method, fmt0, status);
 
         return success;
 }
 
-static void __unused acpi_print_int(acpi_handle handle, char *method)
-{
-        int i;
-
-        if (acpi_evalf(handle, &i, method, "d"))
-                printk(IBM_INFO "%s = 0x%x\n", method, i);
-        else
-                printk(IBM_ERR "error calling %s\n", method);
-}
-
-static int acpi_ec_read(int i, u8 * p)
+static int acpi_ec_read(int i, u8 *p)
 {
         int v;
 
@@ -293,6 +414,7 @@ static int acpi_ec_write(int i, u8 v)
         return 1;
 }
 
+#if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY)
 static int _sta(acpi_handle handle)
 {
         int status;
@@ -302,6 +424,7 @@ static int _sta(acpi_handle handle)
 
         return status;
 }
+#endif
 
 static int issue_thinkpad_cmos_command(int cmos_cmd)
 {
@@ -318,6 +441,10 @@ static int issue_thinkpad_cmos_command(int cmos_cmd)
  * ACPI device model
  */
 
+#define TPACPI_ACPIHANDLE_INIT(object) \
+        drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
+                object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
+
 static void drv_acpi_handle_init(char *name,
                            acpi_handle *handle, acpi_handle parent,
                            char **paths, int num_paths, char **path)
@@ -372,25 +499,27 @@ static int __init setup_acpi_notify(struct ibm_struct *ibm)
 
         rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
         if (rc < 0) {
-                printk(IBM_ERR "acpi_bus_get_device(%s) failed: %d\n",
+                printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
                         ibm->name, rc);
                 return -ENODEV;
         }
 
         acpi_driver_data(ibm->acpi->device) = ibm;
         sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
-                IBM_ACPI_EVENT_PREFIX,
+                TPACPI_ACPI_EVENT_PREFIX,
                 ibm->name);
 
         status = acpi_install_notify_handler(*ibm->acpi->handle,
                         ibm->acpi->type, dispatch_acpi_notify, ibm);
         if (ACPI_FAILURE(status)) {
                 if (status == AE_ALREADY_EXISTS) {
-                        printk(IBM_NOTICE "another device driver is already handling %s events\n",
-                                ibm->name);
+                        printk(TPACPI_NOTICE
+                               "another device driver is already "
+                               "handling %s events\n", ibm->name);
                 } else {
-                        printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
-                                ibm->name, status);
+                        printk(TPACPI_ERR
+                               "acpi_install_notify_handler(%s) failed: %d\n",
+                               ibm->name, status);
                 }
                 return -ENODEV;
         }
@@ -414,18 +543,18 @@ static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
 
         ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
         if (!ibm->acpi->driver) {
-                printk(IBM_ERR "kzalloc(ibm->driver) failed\n");
+                printk(TPACPI_ERR "kzalloc(ibm->driver) failed\n");
                 return -ENOMEM;
         }
 
-        sprintf(ibm->acpi->driver->name, "%s_%s", IBM_NAME, ibm->name);
+        sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
         ibm->acpi->driver->ids = ibm->acpi->hid;
 
         ibm->acpi->driver->ops.add = &tpacpi_device_add;
 
         rc = acpi_bus_register_driver(ibm->acpi->driver);
         if (rc < 0) {
-                printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
+                printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
                        ibm->name, rc);
                 kfree(ibm->acpi->driver);
                 ibm->acpi->driver = NULL;
@@ -470,7 +599,7 @@ static int dispatch_procfs_read(char *page, char **start, off_t off,
 }
 
 static int dispatch_procfs_write(struct file *file,
-                        const char __user * userbuf,
+                        const char __user *userbuf,
                         unsigned long count, void *data)
 {
         struct ibm_struct *ibm = data;
@@ -530,7 +659,22 @@ static struct platform_device *tpacpi_sensors_pdev;
 static struct device *tpacpi_hwmon;
 static struct input_dev *tpacpi_inputdev;
 static struct mutex tpacpi_inputdev_send_mutex;
+static LIST_HEAD(tpacpi_all_drivers);
+
+static int tpacpi_suspend_handler(struct platform_device *pdev,
+                                  pm_message_t state)
+{
+        struct ibm_struct *ibm, *itmp;
+
+        list_for_each_entry_safe(ibm, itmp,
+                                 &tpacpi_all_drivers,
+                                 all_drivers) {
+                if (ibm->suspend)
+                        (ibm->suspend)(state);
+        }
 
+        return 0;
+}
 
 static int tpacpi_resume_handler(struct platform_device *pdev)
 {
@@ -548,107 +692,36 @@ static int tpacpi_resume_handler(struct platform_device *pdev)
 
 static struct platform_driver tpacpi_pdriver = {
         .driver = {
-                .name = IBM_DRVR_NAME,
+                .name = TPACPI_DRVR_NAME,
                 .owner = THIS_MODULE,
         },
+        .suspend = tpacpi_suspend_handler,
         .resume = tpacpi_resume_handler,
 };
 
 static struct platform_driver tpacpi_hwmon_pdriver = {
         .driver = {
-                .name = IBM_HWMON_DRVR_NAME,
+                .name = TPACPI_HWMON_DRVR_NAME,
                 .owner = THIS_MODULE,
         },
 };
 
 /*************************************************************************
- * thinkpad-acpi driver attributes
+ * sysfs support helpers
  */
 
-/* interface_version --------------------------------------------------- */
-static ssize_t tpacpi_driver_interface_version_show(
-                                struct device_driver *drv,
-                                char *buf)
-{
-        return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
-}
-
-static DRIVER_ATTR(interface_version, S_IRUGO,
-                tpacpi_driver_interface_version_show, NULL);
-
-/* debug_level --------------------------------------------------------- */
-static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
-                                                char *buf)
-{
-        return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
-}
-
-static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
-                                                const char *buf, size_t count)
-{
-        unsigned long t;
-
-        if (parse_strtoul(buf, 0xffff, &t))
-                return -EINVAL;
-
-        dbg_level = t;
-
-        return count;
-}
-
-static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
-                tpacpi_driver_debug_show, tpacpi_driver_debug_store);
-
-/* version ------------------------------------------------------------- */
-static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
-                                                char *buf)
-{
-        return snprintf(buf, PAGE_SIZE, "%s v%s\n", IBM_DESC, IBM_VERSION);
-}
-
-static DRIVER_ATTR(version, S_IRUGO,
-                tpacpi_driver_version_show, NULL);
-
-/* --------------------------------------------------------------------- */
-
-static struct driver_attribute* tpacpi_driver_attributes[] = {
-        &driver_attr_debug_level, &driver_attr_version,
-        &driver_attr_interface_version,
+struct attribute_set {
+        unsigned int members, max_members;
+        struct attribute_group group;
 };
 
-static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
-{
-        int i, res;
-
-        i = 0;
-        res = 0;
-        while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
-                res = driver_create_file(drv, tpacpi_driver_attributes[i]);
-                i++;
-        }
-
-        return res;
-}
-
-static void tpacpi_remove_driver_attributes(struct device_driver *drv)
-{
-        int i;
-
-        for(i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
-                driver_remove_file(drv, tpacpi_driver_attributes[i]);
-}
-
-/*************************************************************************
- * sysfs support helpers
- */
-
 struct attribute_set_obj {
         struct attribute_set s;
         struct attribute *a;
 } __attribute__((packed));
 
 static struct attribute_set *create_attr_set(unsigned int max_members,
-                                                const char* name)
+                                                const char *name)
 {
         struct attribute_set_obj *sobj;
 
@@ -668,8 +741,11 @@ static struct attribute_set *create_attr_set(unsigned int max_members,
         return &sobj->s;
 }
 
+#define destroy_attr_set(_set) \
+        kfree(_set);
+
 /* not multi-threaded safe, use it in a single thread per set */
-static int add_to_attr_set(struct attribute_set* s, struct attribute *attr)
+static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
 {
         if (!s || !attr)
                 return -EINVAL;
@@ -683,7 +759,7 @@ static int add_to_attr_set(struct attribute_set* s, struct attribute *attr)
         return 0;
 }
 
-static int add_many_to_attr_set(struct attribute_set* s,
+static int add_many_to_attr_set(struct attribute_set *s,
                         struct attribute **attr,
                         unsigned int count)
 {
@@ -698,12 +774,15 @@ static int add_many_to_attr_set(struct attribute_set* s,
         return 0;
 }
 
-static void delete_attr_set(struct attribute_set* s, struct kobject *kobj)
+static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
 {
         sysfs_remove_group(kobj, &s->group);
         destroy_attr_set(s);
 }
 
+#define register_attr_set_with_sysfs(_attr_set, _kobj) \
+        sysfs_create_group(_kobj, &_attr_set->group)
+
 static int parse_strtoul(const char *buf,
                 unsigned long max, unsigned long *value)
 {
@@ -720,6 +799,84 @@ static int parse_strtoul(const char *buf,
         return 0;
 }
 
+/*************************************************************************
+ * thinkpad-acpi driver attributes
+ */
+
+/* interface_version --------------------------------------------------- */
+static ssize_t tpacpi_driver_interface_version_show(
+                                struct device_driver *drv,
+                                char *buf)
+{
+        return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
+}
+
+static DRIVER_ATTR(interface_version, S_IRUGO,
+                tpacpi_driver_interface_version_show, NULL);
+
+/* debug_level --------------------------------------------------------- */
+static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
+                                                char *buf)
+{
+        return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
+}
+
+static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
+                                                const char *buf, size_t count)
+{
+        unsigned long t;
+
+        if (parse_strtoul(buf, 0xffff, &t))
+                return -EINVAL;
+
+        dbg_level = t;
+
+        return count;
+}
+
+static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
+                tpacpi_driver_debug_show, tpacpi_driver_debug_store);
+
+/* version ------------------------------------------------------------- */
+static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
+                                                char *buf)
+{
+        return snprintf(buf, PAGE_SIZE, "%s v%s\n",
+                        TPACPI_DESC, TPACPI_VERSION);
+}
+
+static DRIVER_ATTR(version, S_IRUGO,
+                tpacpi_driver_version_show, NULL);
+
+/* --------------------------------------------------------------------- */
+
+static struct driver_attribute *tpacpi_driver_attributes[] = {
+        &driver_attr_debug_level, &driver_attr_version,
+        &driver_attr_interface_version,
+};
+
+static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
+{
+        int i, res;
+
+        i = 0;
+        res = 0;
+        while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
+                res = driver_create_file(drv, tpacpi_driver_attributes[i]);
+                i++;
+        }
+
+        return res;
+}
+
+static void tpacpi_remove_driver_attributes(struct device_driver *drv)
+{
+        int i;
+
+        for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
+                driver_remove_file(drv, tpacpi_driver_attributes[i]);
+}
+
 /****************************************************************************
  ****************************************************************************
  *
@@ -734,17 +891,17 @@ static int parse_strtoul(const char *buf,
 
 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
 {
-        printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
-        printk(IBM_INFO "%s\n", IBM_URL);
+        printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
+        printk(TPACPI_INFO "%s\n", TPACPI_URL);
 
-        printk(IBM_INFO "ThinkPad BIOS %s, EC %s\n",
+        printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
                 (thinkpad_id.bios_version_str) ?
                         thinkpad_id.bios_version_str : "unknown",
                 (thinkpad_id.ec_version_str) ?
                         thinkpad_id.ec_version_str : "unknown");
 
         if (thinkpad_id.vendor && thinkpad_id.model_str)
-                printk(IBM_INFO "%s %s\n",
+                printk(TPACPI_INFO "%s %s\n",
                         (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
                                 "IBM" : ((thinkpad_id.vendor ==
                                                 PCI_VENDOR_ID_LENOVO) ?
@@ -758,8 +915,8 @@ static int thinkpad_acpi_driver_read(char *p)
 {
         int len = 0;
 
-        len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
-        len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
+        len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC);
+        len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION);
 
         return len;
 }
@@ -773,15 +930,129 @@ static struct ibm_struct thinkpad_acpi_driver_data = {
  * Hotkey subdriver
  */
 
+enum {  /* hot key scan codes (derived from ACPI DSDT) */
+        TP_ACPI_HOTKEYSCAN_FNF1         = 0,
+        TP_ACPI_HOTKEYSCAN_FNF2,
+        TP_ACPI_HOTKEYSCAN_FNF3,
+        TP_ACPI_HOTKEYSCAN_FNF4,
+        TP_ACPI_HOTKEYSCAN_FNF5,
+        TP_ACPI_HOTKEYSCAN_FNF6,
+        TP_ACPI_HOTKEYSCAN_FNF7,
+        TP_ACPI_HOTKEYSCAN_FNF8,
+        TP_ACPI_HOTKEYSCAN_FNF9,
+        TP_ACPI_HOTKEYSCAN_FNF10,
+        TP_ACPI_HOTKEYSCAN_FNF11,
+        TP_ACPI_HOTKEYSCAN_FNF12,
+        TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
+        TP_ACPI_HOTKEYSCAN_FNINSERT,
+        TP_ACPI_HOTKEYSCAN_FNDELETE,
+        TP_ACPI_HOTKEYSCAN_FNHOME,
+        TP_ACPI_HOTKEYSCAN_FNEND,
+        TP_ACPI_HOTKEYSCAN_FNPAGEUP,
+        TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
+        TP_ACPI_HOTKEYSCAN_FNSPACE,
+        TP_ACPI_HOTKEYSCAN_VOLUMEUP,
+        TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
+        TP_ACPI_HOTKEYSCAN_MUTE,
+        TP_ACPI_HOTKEYSCAN_THINKPAD,
+};
+
+enum {  /* Keys available through NVRAM polling */
+        TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
+        TPACPI_HKEY_NVRAM_GOOD_MASK  = 0x00fb8000U,
+};
+
+enum {  /* Positions of some of the keys in hotkey masks */
+        TP_ACPI_HKEY_DISPSWTCH_MASK     = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
+        TP_ACPI_HKEY_DISPXPAND_MASK     = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
+        TP_ACPI_HKEY_HIBERNATE_MASK     = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
+        TP_ACPI_HKEY_BRGHTUP_MASK       = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
+        TP_ACPI_HKEY_BRGHTDWN_MASK      = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
+        TP_ACPI_HKEY_THNKLGHT_MASK      = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
+        TP_ACPI_HKEY_ZOOM_MASK          = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
+        TP_ACPI_HKEY_VOLUP_MASK         = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
+        TP_ACPI_HKEY_VOLDWN_MASK        = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
+        TP_ACPI_HKEY_MUTE_MASK          = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
+        TP_ACPI_HKEY_THINKPAD_MASK      = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
+};
+
+enum {  /* NVRAM to ACPI HKEY group map */
+        TP_NVRAM_HKEY_GROUP_HK2         = TP_ACPI_HKEY_THINKPAD_MASK |
+                                          TP_ACPI_HKEY_ZOOM_MASK |
+                                          TP_ACPI_HKEY_DISPSWTCH_MASK |
+                                          TP_ACPI_HKEY_HIBERNATE_MASK,
+        TP_NVRAM_HKEY_GROUP_BRIGHTNESS  = TP_ACPI_HKEY_BRGHTUP_MASK |
+                                          TP_ACPI_HKEY_BRGHTDWN_MASK,
+        TP_NVRAM_HKEY_GROUP_VOLUME      = TP_ACPI_HKEY_VOLUP_MASK |
+                                          TP_ACPI_HKEY_VOLDWN_MASK |
+                                          TP_ACPI_HKEY_MUTE_MASK,
+};
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+struct tp_nvram_state {
+       u16 thinkpad_toggle:1;
+       u16 zoom_toggle:1;
+       u16 display_toggle:1;
+       u16 thinklight_toggle:1;
+       u16 hibernate_toggle:1;
+       u16 displayexp_toggle:1;
+       u16 display_state:1;
+       u16 brightness_toggle:1;
+       u16 volume_toggle:1;
+       u16 mute:1;
+
+       u8 brightness_level;
+       u8 volume_level;
+};
+
+static struct task_struct *tpacpi_hotkey_task;
+static u32 hotkey_source_mask;          /* bit mask 0=ACPI,1=NVRAM */
+static int hotkey_poll_freq = 10;       /* Hz */
+static struct mutex hotkey_thread_mutex;
+static struct mutex hotkey_thread_data_mutex;
+static unsigned int hotkey_config_change;
+
+#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
+
+#define hotkey_source_mask 0U
+
+#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
+
+static struct mutex hotkey_mutex;
+
+static enum {   /* Reasons for waking up */
+        TP_ACPI_WAKEUP_NONE = 0,        /* None or unknown */
+        TP_ACPI_WAKEUP_BAYEJ,           /* Bay ejection request */
+        TP_ACPI_WAKEUP_UNDOCK,          /* Undock request */
+} hotkey_wakeup_reason;
+
+static int hotkey_autosleep_ack;
+
 static int hotkey_orig_status;
 static u32 hotkey_orig_mask;
 static u32 hotkey_all_mask;
 static u32 hotkey_reserved_mask;
+static u32 hotkey_mask;
+
+static unsigned int hotkey_report_mode;
 
 static u16 *hotkey_keycode_map;
 
 static struct attribute_set *hotkey_dev_attributes;
 
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+#define HOTKEY_CONFIG_CRITICAL_START \
+        do { \
+                mutex_lock(&hotkey_thread_data_mutex); \
+                hotkey_config_change++; \
+        } while (0);
+#define HOTKEY_CONFIG_CRITICAL_END \
+        mutex_unlock(&hotkey_thread_data_mutex);
+#else
+#define HOTKEY_CONFIG_CRITICAL_START
+#define HOTKEY_CONFIG_CRITICAL_END
+#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
+
 static int hotkey_get_wlsw(int *status)
 {
         if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
@@ -789,15 +1060,400 @@ static int hotkey_get_wlsw(int *status)
         return 0;
 }
 
+/*
+ * Call with hotkey_mutex held
+ */
+static int hotkey_mask_get(void)
+{
+        u32 m = 0;
+
+        if (tp_features.hotkey_mask) {
+                if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
+                        return -EIO;
+        }
+        hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
+
+        return 0;
+}
+
+/*
+ * Call with hotkey_mutex held
+ */
+static int hotkey_mask_set(u32 mask)
+{
+        int i;
+        int rc = 0;
+
+        if (tp_features.hotkey_mask) {
+                HOTKEY_CONFIG_CRITICAL_START
+                for (i = 0; i < 32; i++) {
+                        u32 m = 1 << i;
+                        /* enable in firmware mask only keys not in NVRAM
+                         * mode, but enable the key in the cached hotkey_mask
+                         * regardless of mode, or the key will end up
+                         * disabled by hotkey_mask_get() */
+                        if (!acpi_evalf(hkey_handle,
+                                        NULL, "MHKM", "vdd", i + 1,
+                                        !!((mask & ~hotkey_source_mask) & m))) {
+                                rc = -EIO;
+                                break;
+                        } else {
+                                hotkey_mask = (hotkey_mask & ~m) | (mask & m);
+                        }
+                }
+                HOTKEY_CONFIG_CRITICAL_END
+
+                /* hotkey_mask_get must be called unconditionally below */
+                if (!hotkey_mask_get() && !rc &&
+                    (hotkey_mask & ~hotkey_source_mask) !=
+                     (mask & ~hotkey_source_mask)) {
+                        printk(TPACPI_NOTICE
+                               "requested hot key mask 0x%08x, but "
+                               "firmware forced it to 0x%08x\n",
+                               mask, hotkey_mask);
+                }
+        } else {
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+                HOTKEY_CONFIG_CRITICAL_START
+                hotkey_mask = mask & hotkey_source_mask;
+                HOTKEY_CONFIG_CRITICAL_END
+                hotkey_mask_get();
+                if (hotkey_mask != mask) {
+                        printk(TPACPI_NOTICE
+                               "requested hot key mask 0x%08x, "
+                               "forced to 0x%08x (NVRAM poll mask is "
+                               "0x%08x): no firmware mask support\n",
+                               mask, hotkey_mask, hotkey_source_mask);
+                }
+#else
+                hotkey_mask_get();
+                rc = -ENXIO;
+#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
+        }
+
+        return rc;
+}
+
+static int hotkey_status_get(int *status)
+{
+        if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
+                return -EIO;
+
+        return 0;
+}
+
+static int hotkey_status_set(int status)
+{
+        if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
+                return -EIO;
+
+        return 0;
+}
+
+static void tpacpi_input_send_radiosw(void)
+{
+        int wlsw;
+
+        mutex_lock(&tpacpi_inputdev_send_mutex);
+
+        if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
+                input_report_switch(tpacpi_inputdev,
+                                    SW_RADIO, !!wlsw);
+                input_sync(tpacpi_inputdev);
+        }
+
+        mutex_unlock(&tpacpi_inputdev_send_mutex);
+}
+
+static void tpacpi_input_send_key(unsigned int scancode)
+{
+        unsigned int keycode;
+
+        keycode = hotkey_keycode_map[scancode];
+
+        if (keycode != KEY_RESERVED) {
+                mutex_lock(&tpacpi_inputdev_send_mutex);
+
+                input_report_key(tpacpi_inputdev, keycode, 1);
+                if (keycode == KEY_UNKNOWN)
+                        input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
+                                    scancode);
+                input_sync(tpacpi_inputdev);
+
+                input_report_key(tpacpi_inputdev, keycode, 0);
+                if (keycode == KEY_UNKNOWN)
+                        input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
+                                    scancode);
+                input_sync(tpacpi_inputdev);
+
+                mutex_unlock(&tpacpi_inputdev_send_mutex);
+        }
+}
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
+
+static void tpacpi_hotkey_send_key(unsigned int scancode)
+{
+        tpacpi_input_send_key(scancode);
+        if (hotkey_report_mode < 2) {
+                acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
+                                                0x80, 0x1001 + scancode);
+        }
+}
+
+static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
+{
+        u8 d;
+
+        if (m & TP_NVRAM_HKEY_GROUP_HK2) {
+                d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
+                n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
+                n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
+                n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
+                n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
+        }
+        if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
+                d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
+                n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
+        }
+        if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
+                d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
+                n->displayexp_toggle =
+                                !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
+        }
+        if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
+                d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
+                n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
+                                >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
+                n->brightness_toggle =
+                                !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
+        }
+        if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
+                d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
+                n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
+                                >> TP_NVRAM_POS_LEVEL_VOLUME;
+                n->mute = !!(d & TP_NVRAM_MASK_MUTE);
+                n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
+        }
+}
+
+#define TPACPI_COMPARE_KEY(__scancode, __member) \
+        do { \
+                if ((mask & (1 << __scancode)) && \
+                    oldn->__member != newn->__member) \
+                tpacpi_hotkey_send_key(__scancode); \
+        } while (0)
+
+#define TPACPI_MAY_SEND_KEY(__scancode) \
+        do { if (mask & (1 << __scancode)) \
+                tpacpi_hotkey_send_key(__scancode); } while (0)
+
+static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
+                                           struct tp_nvram_state *newn,
+                                           u32 mask)
+{
+        TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
+        TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
+        TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
+        TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
+
+        TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
+
+        TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
+
+        /* handle volume */
+        if (oldn->volume_toggle != newn->volume_toggle) {
+                if (oldn->mute != newn->mute) {
+                        TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
+                }
+                if (oldn->volume_level > newn->volume_level) {
+                        TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
+                } else if (oldn->volume_level < newn->volume_level) {
+                        TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
+                } else if (oldn->mute == newn->mute) {
+                        /* repeated key presses that didn't change state */
+                        if (newn->mute) {
+                                TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
+                        } else if (newn->volume_level != 0) {
+                                TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
+                        } else {
+                                TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
+                        }
+                }
+        }
+
+        /* handle brightness */
+        if (oldn->brightness_toggle != newn->brightness_toggle) {
+                if (oldn->brightness_level < newn->brightness_level) {
+                        TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
+                } else if (oldn->brightness_level > newn->brightness_level) {
+                        TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
+                } else {
+                        /* repeated key presses that didn't change state */
+                        if (newn->brightness_level != 0) {
+                                TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
+                        } else {
+                                TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
+                        }
+                }
+        }
+}
+
+#undef TPACPI_COMPARE_KEY
+#undef TPACPI_MAY_SEND_KEY
+
+static int hotkey_kthread(void *data)
+{
+        struct tp_nvram_state s[2];
+        u32 mask;
+        unsigned int si, so;
+        unsigned long t;
+        unsigned int change_detector, must_reset;
+
+        mutex_lock(&hotkey_thread_mutex);
+
+        if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
+                goto exit;
+
+        set_freezable();
+
+        so = 0;
+        si = 1;
+        t = 0;
+
+        /* Initial state for compares */
+        mutex_lock(&hotkey_thread_data_mutex);
+        change_detector = hotkey_config_change;
+        mask = hotkey_source_mask & hotkey_mask;
+        mutex_unlock(&hotkey_thread_data_mutex);
+        hotkey_read_nvram(&s[so], mask);
+
+        while (!kthread_should_stop() && hotkey_poll_freq) {
+                if (t == 0)
+                        t = 1000/hotkey_poll_freq;
+                t = msleep_interruptible(t);
+                if (unlikely(kthread_should_stop()))
+                        break;
+                must_reset = try_to_freeze();
+                if (t > 0 && !must_reset)
+                        continue;
+
+                mutex_lock(&hotkey_thread_data_mutex);
+                if (must_reset || hotkey_config_change != change_detector) {
+                        /* forget old state on thaw or config change */
+                        si = so;
+                        t = 0;
+                        change_detector = hotkey_config_change;
+                }
+                mask = hotkey_source_mask & hotkey_mask;
+                mutex_unlock(&hotkey_thread_data_mutex);
+
+                if (likely(mask)) {
+                        hotkey_read_nvram(&s[si], mask);
+                        if (likely(si != so)) {
+                                hotkey_compare_and_issue_event(&s[so], &s[si],
+                                                                mask);
+                        }
+                }
+
+                so = si;
+                si ^= 1;
+        }
+
+exit:
+        mutex_unlock(&hotkey_thread_mutex);
+        return 0;
+}
+
+static void hotkey_poll_stop_sync(void)
+{
+        if (tpacpi_hotkey_task) {
+                if (frozen(tpacpi_hotkey_task) ||
+                    freezing(tpacpi_hotkey_task))
+                        thaw_process(tpacpi_hotkey_task);
+
+                kthread_stop(tpacpi_hotkey_task);
+                tpacpi_hotkey_task = NULL;
+                mutex_lock(&hotkey_thread_mutex);
+                /* at this point, the thread did exit */
+                mutex_unlock(&hotkey_thread_mutex);
+        }
+}
+
+/* call with hotkey_mutex held */
+static void hotkey_poll_setup(int may_warn)
+{
+        if ((hotkey_source_mask & hotkey_mask) != 0 &&
+            hotkey_poll_freq > 0 &&
+            (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
+                if (!tpacpi_hotkey_task) {
+                        tpacpi_hotkey_task = kthread_run(hotkey_kthread,
+                                                         NULL,
+                                                         TPACPI_FILE "d");
+                        if (IS_ERR(tpacpi_hotkey_task)) {
+                                tpacpi_hotkey_task = NULL;
+                                printk(TPACPI_ERR
+                                       "could not create kernel thread "
+                                       "for hotkey polling\n");
+                        }
+                }
+        } else {
+                hotkey_poll_stop_sync();
+                if (may_warn &&
+                    hotkey_source_mask != 0 && hotkey_poll_freq == 0) {
+                        printk(TPACPI_NOTICE
+                                "hot keys 0x%08x require polling, "
+                                "which is currently disabled\n",
+                                hotkey_source_mask);
+                }
+        }
+}
+
+static void hotkey_poll_setup_safe(int may_warn)
+{
+        mutex_lock(&hotkey_mutex);
+        hotkey_poll_setup(may_warn);
+        mutex_unlock(&hotkey_mutex);
+}
+
+static int hotkey_inputdev_open(struct input_dev *dev)
+{
+        switch (tpacpi_lifecycle) {
+        case TPACPI_LIFE_INIT:
+                /*
+                 * hotkey_init will call hotkey_poll_setup_safe
+                 * at the appropriate moment
+                 */
+                return 0;
+        case TPACPI_LIFE_EXITING:
+                return -EBUSY;
+        case TPACPI_LIFE_RUNNING:
+                hotkey_poll_setup_safe(0);
+                return 0;
+        }
+
+        /* Should only happen if tpacpi_lifecycle is corrupt */
+        BUG();
+        return -EBUSY;
+}
+
+static void hotkey_inputdev_close(struct input_dev *dev)
+{
+        /* disable hotkey polling when possible */
+        if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
+                hotkey_poll_setup_safe(0);
+}
+#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
+
 /* sysfs hotkey enable ------------------------------------------------- */
 static ssize_t hotkey_enable_show(struct device *dev,
                            struct device_attribute *attr,
                            char *buf)
 {
         int res, status;
-        u32 mask;
 
-        res = hotkey_get(&status, &mask);
+        res = hotkey_status_get(&status);
         if (res)
                 return res;
 
@@ -809,15 +1465,12 @@ static ssize_t hotkey_enable_store(struct device *dev,
                             const char *buf, size_t count)
 {
         unsigned long t;
-        int res, status;
-        u32 mask;
+        int res;
 
         if (parse_strtoul(buf, 1, &t))
                 return -EINVAL;
 
-        res = hotkey_get(&status, &mask);
-        if (!res)
-                res = hotkey_set(t, mask);
+        res = hotkey_status_set(t);
 
         return (res) ? res : count;
 }
@@ -831,14 +1484,15 @@ static ssize_t hotkey_mask_show(struct device *dev,
                            struct device_attribute *attr,
                            char *buf)
 {
-        int res, status;
-        u32 mask;
+        int res;
 
-        res = hotkey_get(&status, &mask);
-        if (res)
-                return res;
+        if (mutex_lock_interruptible(&hotkey_mutex))
+                return -ERESTARTSYS;
+        res = hotkey_mask_get();
+        mutex_unlock(&hotkey_mutex);
 
-        return snprintf(buf, PAGE_SIZE, "0x%08x\n", mask);
+        return (res)?
+                res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
 }
 
 static ssize_t hotkey_mask_store(struct device *dev,
@@ -846,15 +1500,21 @@ static ssize_t hotkey_mask_store(struct device *dev,
                             const char *buf, size_t count)
 {
         unsigned long t;
-        int res, status;
-        u32 mask;
+        int res;
 
         if (parse_strtoul(buf, 0xffffffffUL, &t))
                 return -EINVAL;
 
-        res = hotkey_get(&status, &mask);
-        if (!res)
-                hotkey_set(status, t);
+        if (mutex_lock_interruptible(&hotkey_mutex))
+                return -ERESTARTSYS;
+
+        res = hotkey_mask_set(t);
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+        hotkey_poll_setup(1);
+#endif
+
+        mutex_unlock(&hotkey_mutex);
 
         return (res) ? res : count;
 }
@@ -890,7 +1550,8 @@ static ssize_t hotkey_all_mask_show(struct device *dev,
                            struct device_attribute *attr,
                            char *buf)
 {
-        return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_all_mask);
+        return snprintf(buf, PAGE_SIZE, "0x%08x\n",
+                                hotkey_all_mask | hotkey_source_mask);
 }
 
 static struct device_attribute dev_attr_hotkey_all_mask =
@@ -902,14 +1563,87 @@ static ssize_t hotkey_recommended_mask_show(struct device *dev,
                                             char *buf)
 {
         return snprintf(buf, PAGE_SIZE, "0x%08x\n",
-                        hotkey_all_mask & ~hotkey_reserved_mask);
+                        (hotkey_all_mask | hotkey_source_mask)
+                        & ~hotkey_reserved_mask);
 }
 
 static struct device_attribute dev_attr_hotkey_recommended_mask =
         __ATTR(hotkey_recommended_mask, S_IRUGO,
                 hotkey_recommended_mask_show, NULL);
 
-/* sysfs hotkey radio_sw ----------------------------------------------- */
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+
+/* sysfs hotkey hotkey_source_mask ------------------------------------- */
+static ssize_t hotkey_source_mask_show(struct device *dev,
+                           struct device_attribute *attr,
+                           char *buf)
+{
+        return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
+}
+
+static ssize_t hotkey_source_mask_store(struct device *dev,
+                            struct device_attribute *attr,
+                            const char *buf, size_t count)
+{
+        unsigned long t;
+
+        if (parse_strtoul(buf, 0xffffffffUL, &t) ||
+                ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
+                return -EINVAL;
+
+        if (mutex_lock_interruptible(&hotkey_mutex))
+                return -ERESTARTSYS;
+
+        HOTKEY_CONFIG_CRITICAL_START
+        hotkey_source_mask = t;
+        HOTKEY_CONFIG_CRITICAL_END
+
+        hotkey_poll_setup(1);
+
+        mutex_unlock(&hotkey_mutex);
+
+        return count;
+}
+
+static struct device_attribute dev_attr_hotkey_source_mask =
+        __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
+                hotkey_source_mask_show, hotkey_source_mask_store);
+
+/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
+static ssize_t hotkey_poll_freq_show(struct device *dev,
+                           struct device_attribute *attr,
+                           char *buf)
+{
+        return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
+}
+
+static ssize_t hotkey_poll_freq_store(struct device *dev,
+                            struct device_attribute *attr,
+                            const char *buf, size_t count)
+{
+        unsigned long t;
+
+        if (parse_strtoul(buf, 25, &t))
+                return -EINVAL;
+
+        if (mutex_lock_interruptible(&hotkey_mutex))
+                return -ERESTARTSYS;
+
+        hotkey_poll_freq = t;
+
+        hotkey_poll_setup(1);
+        mutex_unlock(&hotkey_mutex);
+
+        return count;
+}
+
+static struct device_attribute dev_attr_hotkey_poll_freq =
+        __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
+                hotkey_poll_freq_show, hotkey_poll_freq_store);
+
+#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
+
+/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
 static ssize_t hotkey_radio_sw_show(struct device *dev,
                            struct device_attribute *attr,
                            char *buf)
@@ -925,6 +1659,13 @@ static ssize_t hotkey_radio_sw_show(struct device *dev,
 static struct device_attribute dev_attr_hotkey_radio_sw =
         __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
 
+static void hotkey_radio_sw_notify_change(void)
+{
+        if (tp_features.hotkey_wlsw)
+                sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
+                             "hotkey_radio_sw");
+}
+
 /* sysfs hotkey report_mode -------------------------------------------- */
 static ssize_t hotkey_report_mode_show(struct device *dev,
                            struct device_attribute *attr,
@@ -937,43 +1678,132 @@ static ssize_t hotkey_report_mode_show(struct device *dev,
 static struct device_attribute dev_attr_hotkey_report_mode =
         __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
 
+/* sysfs wakeup reason (pollable) -------------------------------------- */
+static ssize_t hotkey_wakeup_reason_show(struct device *dev,
+                           struct device_attribute *attr,
+                           char *buf)
+{
+        return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
+}
+
+static struct device_attribute dev_attr_hotkey_wakeup_reason =
+        __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
+
+void hotkey_wakeup_reason_notify_change(void)
+{
+        if (tp_features.hotkey_mask)
+                sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
+                             "wakeup_reason");
+}
+
+/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
+static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
+                           struct device_attribute *attr,
+                           char *buf)
+{
+        return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
+}
+
+static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
+        __ATTR(wakeup_hotunplug_complete, S_IRUGO,
+               hotkey_wakeup_hotunplug_complete_show, NULL);
+
+void hotkey_wakeup_hotunplug_complete_notify_change(void)
+{
+        if (tp_features.hotkey_mask)
+                sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
+                             "wakeup_hotunplug_complete");
+}
+
 /* --------------------------------------------------------------------- */
 
 static struct attribute *hotkey_attributes[] __initdata = {
         &dev_attr_hotkey_enable.attr,
+        &dev_attr_hotkey_bios_enabled.attr,
         &dev_attr_hotkey_report_mode.attr,
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+        &dev_attr_hotkey_mask.attr,
+        &dev_attr_hotkey_all_mask.attr,
+        &dev_attr_hotkey_recommended_mask.attr,
+        &dev_attr_hotkey_source_mask.attr,
+        &dev_attr_hotkey_poll_freq.attr,
+#endif
 };
 
 static struct attribute *hotkey_mask_attributes[] __initdata = {
-        &dev_attr_hotkey_mask.attr,
-        &dev_attr_hotkey_bios_enabled.attr,
         &dev_attr_hotkey_bios_mask.attr,
+#ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+        &dev_attr_hotkey_mask.attr,
         &dev_attr_hotkey_all_mask.attr,
         &dev_attr_hotkey_recommended_mask.attr,
+#endif
+        &dev_attr_hotkey_wakeup_reason.attr,
+        &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
 };
 
 static int __init hotkey_init(struct ibm_init_struct *iibm)
 {
-
+        /* Requirements for changing the default keymaps:
+         *
+         * 1. Many of the keys are mapped to KEY_RESERVED for very
+         *    good reasons.  Do not change them unless you have deep
+         *    knowledge on the IBM and Lenovo ThinkPad firmware for
+         *    the various ThinkPad models.  The driver behaves
+         *    differently for KEY_RESERVED: such keys have their
+         *    hot key mask *unset* in mask_recommended, and also
+         *    in the initial hot key mask programmed into the
+         *    firmware at driver load time, which means the firm-
+         *    ware may react very differently if you change them to
+         *    something else;
+         *
+         * 2. You must be subscribed to the linux-thinkpad and
+         *    ibm-acpi-devel mailing lists, and you should read the
+         *    list archives since 2007 if you want to change the
+         *    keymaps.  This requirement exists so that you will
+         *    know the past history of problems with the thinkpad-
+         *    acpi driver keymaps, and also that you will be
+         *    listening to any bug reports;
+         *
+         * 3. Do not send thinkpad-acpi specific patches directly to
+         *    for merging, *ever*.  Send them to the linux-acpi
+         *    mailinglist for comments.  Merging is to be done only
+         *    through acpi-test and the ACPI maintainer.
+         *
+         * If the above is too much to ask, don't change the keymap.
+         * Ask the thinkpad-acpi maintainer to do it, instead.
+         */
         static u16 ibm_keycode_map[] __initdata = {
                 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
                 KEY_FN_F1,      KEY_FN_F2,      KEY_COFFEE,     KEY_SLEEP,
                 KEY_WLAN,       KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
                 KEY_FN_F9,      KEY_FN_F10,     KEY_FN_F11,     KEY_SUSPEND,
-                /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
+
+                /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
                 KEY_UNKNOWN,    /* 0x0C: FN+BACKSPACE */
                 KEY_UNKNOWN,    /* 0x0D: FN+INSERT */
                 KEY_UNKNOWN,    /* 0x0E: FN+DELETE */
+
+                /* brightness: firmware always reacts to them, unless
+                 * X.org did some tricks in the radeon BIOS scratch
+                 * registers of *some* models */
                 KEY_RESERVED,   /* 0x0F: FN+HOME (brightness up) */
-                /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
                 KEY_RESERVED,   /* 0x10: FN+END (brightness down) */
+
+                /* Thinklight: firmware always react to it */
                 KEY_RESERVED,   /* 0x11: FN+PGUP (thinklight toggle) */
+
                 KEY_UNKNOWN,    /* 0x12: FN+PGDOWN */
                 KEY_ZOOM,       /* 0x13: FN+SPACE (zoom) */
+
+                /* Volume: firmware always react to it and reprograms
+                 * the built-in *extra* mixer.  Never map it to control
+                 * another mixer by default. */
                 KEY_RESERVED,   /* 0x14: VOLUME UP */
                 KEY_RESERVED,   /* 0x15: VOLUME DOWN */
                 KEY_RESERVED,   /* 0x16: MUTE */
+
                 KEY_VENDOR,     /* 0x17: Thinkpad/AccessIBM/Lenovo */
+
                 /* (assignments unknown, please report if found) */
                 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
                 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
@@ -983,20 +1813,37 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
                 KEY_FN_F1,      KEY_COFFEE,     KEY_BATTERY,    KEY_SLEEP,
                 KEY_WLAN,       KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
                 KEY_FN_F9,      KEY_FN_F10,     KEY_FN_F11,     KEY_SUSPEND,
-                /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
+
+                /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
                 KEY_UNKNOWN,    /* 0x0C: FN+BACKSPACE */
                 KEY_UNKNOWN,    /* 0x0D: FN+INSERT */
                 KEY_UNKNOWN,    /* 0x0E: FN+DELETE */
+
                 KEY_RESERVED,   /* 0x0F: FN+HOME (brightness up) */
-                /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
                 KEY_RESERVED,   /* 0x10: FN+END (brightness down) */
+
                 KEY_RESERVED,   /* 0x11: FN+PGUP (thinklight toggle) */
+
                 KEY_UNKNOWN,    /* 0x12: FN+PGDOWN */
                 KEY_ZOOM,       /* 0x13: FN+SPACE (zoom) */
+
+                /* Volume: z60/z61, T60 (BIOS version?): firmware always
+                 * react to it and reprograms the built-in *extra* mixer.
+                 * Never map it to control another mixer by default.
+                 *
+                 * T60?, T61, R60?, R61: firmware and EC tries to send
+                 * these over the regular keyboard, so these are no-ops,
+                 * but there are still weird bugs re. MUTE, so do not
+                 * change unless you get test reports from all Lenovo
+                 * models.  May cause the BIOS to interfere with the
+                 * HDA mixer.
+                 */
                 KEY_RESERVED,   /* 0x14: VOLUME UP */
                 KEY_RESERVED,   /* 0x15: VOLUME DOWN */
                 KEY_RESERVED,   /* 0x16: MUTE */
+
                 KEY_VENDOR,     /* 0x17: Thinkpad/AccessIBM/Lenovo */
+
                 /* (assignments unknown, please report if found) */
                 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
                 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
@@ -1013,10 +1860,17 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
         vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
 
         BUG_ON(!tpacpi_inputdev);
+        BUG_ON(tpacpi_inputdev->open != NULL ||
+               tpacpi_inputdev->close != NULL);
 
-        IBM_ACPIHANDLE_INIT(hkey);
+        TPACPI_ACPIHANDLE_INIT(hkey);
         mutex_init(&hotkey_mutex);
 
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+        mutex_init(&hotkey_thread_mutex);
+        mutex_init(&hotkey_thread_data_mutex);
+#endif
+
         /* hotkey not supported on 570 */
         tp_features.hotkey = hkey_handle != NULL;
 
@@ -1024,7 +1878,7 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
                 str_supported(tp_features.hotkey));
 
         if (tp_features.hotkey) {
-                hotkey_dev_attributes = create_attr_set(8, NULL);
+                hotkey_dev_attributes = create_attr_set(12, NULL);
                 if (!hotkey_dev_attributes)
                         return -ENOMEM;
                 res = add_many_to_attr_set(hotkey_dev_attributes,
@@ -1038,15 +1892,15 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
                    for HKEY interface version 0x100 */
                 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
                         if ((hkeyv >> 8) != 1) {
-                                printk(IBM_ERR "unknown version of the "
+                                printk(TPACPI_ERR "unknown version of the "
                                        "HKEY interface: 0x%x\n", hkeyv);
-                                printk(IBM_ERR "please report this to %s\n",
-                                       IBM_MAIL);
+                                printk(TPACPI_ERR "please report this to %s\n",
+                                       TPACPI_MAIL);
                         } else {
                                 /*
                                  * MHKV 0x100 in A31, R40, R40e,
                                  * T4x, X31, and later
-                                 * */
+                                 */
                                 tp_features.hotkey_mask = 1;
                         }
                 }
@@ -1057,25 +1911,46 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
                 if (tp_features.hotkey_mask) {
                         if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
                                         "MHKA", "qd")) {
-                                printk(IBM_ERR
+                                printk(TPACPI_ERR
                                        "missing MHKA handler, "
                                        "please report this to %s\n",
-                                       IBM_MAIL);
-                                hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
+                                       TPACPI_MAIL);
+                                /* FN+F12, FN+F4, FN+F3 */
+                                hotkey_all_mask = 0x080cU;
                         }
                 }
 
-                res = hotkey_get(&hotkey_orig_status, &hotkey_orig_mask);
+                /* hotkey_source_mask *must* be zero for
+                 * the first hotkey_mask_get */
+                res = hotkey_status_get(&hotkey_orig_status);
                 if (!res && tp_features.hotkey_mask) {
-                        res = add_many_to_attr_set(hotkey_dev_attributes,
-                                hotkey_mask_attributes,
-                                ARRAY_SIZE(hotkey_mask_attributes));
+                        res = hotkey_mask_get();
+                        hotkey_orig_mask = hotkey_mask;
+                        if (!res) {
+                                res = add_many_to_attr_set(
+                                        hotkey_dev_attributes,
+                                        hotkey_mask_attributes,
+                                        ARRAY_SIZE(hotkey_mask_attributes));
+                        }
+                }
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+                if (tp_features.hotkey_mask) {
+                        hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
+                                                & ~hotkey_all_mask;
+                } else {
+                        hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
                 }
 
+                vdbg_printk(TPACPI_DBG_INIT,
+                            "hotkey source mask 0x%08x, polling freq %d\n",
+                            hotkey_source_mask, hotkey_poll_freq);
+#endif
+
                 /* Not all thinkpads have a hardware radio switch */
                 if (!res && acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
                         tp_features.hotkey_wlsw = 1;
-                        printk(IBM_INFO
+                        printk(TPACPI_INFO
                                 "radio switch found; radios are %s\n",
                                 enabled(status, 0));
                         res = add_to_attr_set(hotkey_dev_attributes,
@@ -1094,7 +1969,8 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
                 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
                                                 GFP_KERNEL);
                 if (!hotkey_keycode_map) {
-                        printk(IBM_ERR "failed to allocate memory for key map\n");
+                        printk(TPACPI_ERR
+                                "failed to allocate memory for key map\n");
                         return -ENOMEM;
                 }
 
@@ -1133,15 +2009,26 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
 
                 dbg_printk(TPACPI_DBG_INIT,
                                 "enabling hot key handling\n");
-                res = hotkey_set(1, (hotkey_all_mask & ~hotkey_reserved_mask)
-                                        | hotkey_orig_mask);
+                res = hotkey_status_set(1);
                 if (res)
                         return res;
+                res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
+                                        & ~hotkey_reserved_mask)
+                                        | hotkey_orig_mask);
+                if (res < 0 && res != -ENXIO)
+                        return res;
 
                 dbg_printk(TPACPI_DBG_INIT,
                                 "legacy hot key reporting over procfs %s\n",
                                 (hotkey_report_mode < 2) ?
                                         "enabled" : "disabled");
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+                tpacpi_inputdev->open = &hotkey_inputdev_open;
+                tpacpi_inputdev->close = &hotkey_inputdev_close;
+
+                hotkey_poll_setup_safe(1);
+#endif
         }
 
         return (tp_features.hotkey)? 0 : 1;
@@ -1149,13 +2036,19 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
 
 static void hotkey_exit(void)
 {
-        int res;
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+        hotkey_poll_stop_sync();
+#endif
 
         if (tp_features.hotkey) {
-                dbg_printk(TPACPI_DBG_EXIT, "restoring original hotkey mask\n");
-                res = hotkey_set(hotkey_orig_status, hotkey_orig_mask);
-                if (res)
-                        printk(IBM_ERR "failed to restore hotkey to BIOS defaults\n");
+                dbg_printk(TPACPI_DBG_EXIT,
+                           "restoring original hot key mask\n");
+                /* no short-circuit boolean operator below! */
+                if ((hotkey_mask_set(hotkey_orig_mask) |
+                     hotkey_status_set(hotkey_orig_status)) != 0)
+                        printk(TPACPI_ERR
+                               "failed to restore hot key mask "
+                               "to BIOS defaults\n");
         }
 
         if (hotkey_dev_attributes) {
@@ -1164,62 +2057,28 @@ static void hotkey_exit(void)
         }
 }
 
-static void tpacpi_input_send_key(unsigned int scancode,
-                                  unsigned int keycode)
-{
-        if (keycode != KEY_RESERVED) {
-                mutex_lock(&tpacpi_inputdev_send_mutex);
-
-                input_report_key(tpacpi_inputdev, keycode, 1);
-                if (keycode == KEY_UNKNOWN)
-                        input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
-                                    scancode);
-                input_sync(tpacpi_inputdev);
-
-                input_report_key(tpacpi_inputdev, keycode, 0);
-                if (keycode == KEY_UNKNOWN)
-                        input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
-                                    scancode);
-                input_sync(tpacpi_inputdev);
-
-                mutex_unlock(&tpacpi_inputdev_send_mutex);
-        }
-}
-
-static void tpacpi_input_send_radiosw(void)
-{
-        int wlsw;
-
-        mutex_lock(&tpacpi_inputdev_send_mutex);
-
-        if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
-                input_report_switch(tpacpi_inputdev,
-                                    SW_RADIO, !!wlsw);
-                input_sync(tpacpi_inputdev);
-        }
-
-        mutex_unlock(&tpacpi_inputdev_send_mutex);
-}
-
 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
 {
         u32 hkey;
-        unsigned int keycode, scancode;
+        unsigned int scancode;
         int send_acpi_ev;
         int ignore_acpi_ev;
+        int unk_ev;
 
         if (event != 0x80) {
-                printk(IBM_ERR "unknown HKEY notification event %d\n", event);
+                printk(TPACPI_ERR
+                       "unknown HKEY notification event %d\n", event);
                 /* forward it to userspace, maybe it knows how to handle it */
-                acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
-                                                ibm->acpi->device->dev.bus_id,
-                                                event, 0);
+                acpi_bus_generate_netlink_event(
+                                        ibm->acpi->device->pnp.device_class,
+                                        ibm->acpi->device->dev.bus_id,
+                                        event, 0);
                 return;
         }
 
         while (1) {
                 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
-                        printk(IBM_ERR "failed to retrieve HKEY event\n");
+                        printk(TPACPI_ERR "failed to retrieve HKEY event\n");
                         return;
                 }
 
@@ -1228,8 +2087,9 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
                         return;
                 }
 
-                send_acpi_ev = 0;
+                send_acpi_ev = 1;
                 ignore_acpi_ev = 0;
+                unk_ev = 0;
 
                 switch (hkey >> 12) {
                 case 1:
@@ -1237,104 +2097,139 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
                         scancode = hkey & 0xfff;
                         if (scancode > 0 && scancode < 0x21) {
                                 scancode--;
-                                keycode = hotkey_keycode_map[scancode];
-                                tpacpi_input_send_key(scancode, keycode);
+                                if (!(hotkey_source_mask & (1 << scancode))) {
+                                        tpacpi_input_send_key(scancode);
+                                        send_acpi_ev = 0;
+                                } else {
+                                        ignore_acpi_ev = 1;
+                                }
                         } else {
-                                printk(IBM_ERR
-                                       "hotkey 0x%04x out of range for keyboard map\n",
-                                       hkey);
-                                send_acpi_ev = 1;
+                                unk_ev = 1;
                         }
                         break;
-                case 5:
-                        /* 0x5000-0x5FFF: LID */
-                        /* we don't handle it through this path, just
-                         * eat up known LID events */
-                        if (hkey != 0x5001 && hkey != 0x5002) {
-                                printk(IBM_ERR
-                                       "unknown LID-related HKEY event: 0x%04x\n",
-                                       hkey);
-                                send_acpi_ev = 1;
+                case 2:
+                        /* Wakeup reason */
+                        switch (hkey) {
+                        case 0x2304: /* suspend, undock */
+                        case 0x2404: /* hibernation, undock */
+                                hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
+                                ignore_acpi_ev = 1;
+                                break;
+                        case 0x2305: /* suspend, bay eject */
+                        case 0x2405: /* hibernation, bay eject */
+                                hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
+                                ignore_acpi_ev = 1;
+                                break;
+                        default:
+                                unk_ev = 1;
+                        }
+                        if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
+                                printk(TPACPI_INFO
+                                       "woke up due to a hot-unplug "
+                                       "request...\n");
+                                hotkey_wakeup_reason_notify_change();
+                        }
+                        break;
+                case 3:
+                        /* bay-related wakeups */
+                        if (hkey == 0x3003) {
+                                hotkey_autosleep_ack = 1;
+                                printk(TPACPI_INFO
+                                       "bay ejected\n");
+                                hotkey_wakeup_hotunplug_complete_notify_change();
                         } else {
+                                unk_ev = 1;
+                        }
+                        break;
+                case 4:
+                        /* dock-related wakeups */
+                        if (hkey == 0x4003) {
+                                hotkey_autosleep_ack = 1;
+                                printk(TPACPI_INFO
+                                       "undocked\n");
+                                hotkey_wakeup_hotunplug_complete_notify_change();
+                        } else {
+                                unk_ev = 1;
+                        }
+                        break;
+                case 5:
+                        /* 0x5000-0x5FFF: human interface helpers */
+                        switch (hkey) {
+                        case 0x5010: /* Lenovo new BIOS: brightness changed */
+                        case 0x5009: /* X61t: swivel up (tablet mode) */
+                        case 0x500a: /* X61t: swivel down (normal mode) */
+                        case 0x500b: /* X61t: tablet pen inserted into bay */
+                        case 0x500c: /* X61t: tablet pen removed from bay */
+                                break;
+                        case 0x5001:
+                        case 0x5002:
+                                /* LID switch events.  Do not propagate */
                                 ignore_acpi_ev = 1;
+                                break;
+                        default:
+                                unk_ev = 1;
                         }
                         break;
                 case 7:
                         /* 0x7000-0x7FFF: misc */
                         if (tp_features.hotkey_wlsw && hkey == 0x7000) {
                                 tpacpi_input_send_radiosw();
+                                hotkey_radio_sw_notify_change();
+                                send_acpi_ev = 0;
                                 break;
                         }
                         /* fallthrough to default */
                 default:
-                        /* case 2: dock-related */
-                        /*      0x2305 - T43 waking up due to bay lever eject while aslept */
-                        /* case 3: ultra-bay related. maybe bay in dock? */
-                        /*      0x3003 - T43 after wake up by bay lever eject (0x2305) */
-                        printk(IBM_NOTICE "unhandled HKEY event 0x%04x\n", hkey);
-                        send_acpi_ev = 1;
+                        unk_ev = 1;
+                }
+                if (unk_ev) {
+                        printk(TPACPI_NOTICE
+                               "unhandled HKEY event 0x%04x\n", hkey);
                 }
 
                 /* Legacy events */
-                if (!ignore_acpi_ev && (send_acpi_ev || hotkey_report_mode < 2)) {
-                        acpi_bus_generate_proc_event(ibm->acpi->device, event, hkey);
+                if (!ignore_acpi_ev &&
+                    (send_acpi_ev || hotkey_report_mode < 2)) {
+                        acpi_bus_generate_proc_event(ibm->acpi->device,
+                                                     event, hkey);
                 }
 
                 /* netlink events */
                 if (!ignore_acpi_ev && send_acpi_ev) {
-                        acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
-                                                        ibm->acpi->device->dev.bus_id,
-                                                        event, hkey);
+                        acpi_bus_generate_netlink_event(
+                                        ibm->acpi->device->pnp.device_class,
+                                        ibm->acpi->device->dev.bus_id,
+                                        event, hkey);
                 }
         }
 }
 
-static void hotkey_resume(void)
+static void hotkey_suspend(pm_message_t state)
 {
-        tpacpi_input_send_radiosw();
+        /* Do these on suspend, we get the events on early resume! */
+        hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
+        hotkey_autosleep_ack = 0;
 }
 
-/*
- * Call with hotkey_mutex held
- */
-static int hotkey_get(int *status, u32 *mask)
-{
-        if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
-                return -EIO;
-
-        if (tp_features.hotkey_mask)
-                if (!acpi_evalf(hkey_handle, mask, "DHKN", "d"))
-                        return -EIO;
-
-        return 0;
-}
-
-/*
- * Call with hotkey_mutex held
- */
-static int hotkey_set(int status, u32 mask)
+static void hotkey_resume(void)
 {
-        int i;
-
-        if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
-                return -EIO;
-
-        if (tp_features.hotkey_mask)
-                for (i = 0; i < 32; i++) {
-                        int bit = ((1 << i) & mask) != 0;
-                        if (!acpi_evalf(hkey_handle,
-                                        NULL, "MHKM", "vdd", i + 1, bit))
-                                return -EIO;
-                }
-
-        return 0;
+        if (hotkey_mask_get())
+                printk(TPACPI_ERR
+                       "error while trying to read hot key mask "
+                       "from firmware\n");
+        tpacpi_input_send_radiosw();
+        hotkey_radio_sw_notify_change();
+        hotkey_wakeup_reason_notify_change();
+        hotkey_wakeup_hotunplug_complete_notify_change();
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+        hotkey_poll_setup_safe(0);
+#endif
 }
 
 /* procfs -------------------------------------------------------------- */
 static int hotkey_read(char *p)
 {
         int res, status;
-        u32 mask;
         int len = 0;
 
         if (!tp_features.hotkey) {
@@ -1344,14 +2239,16 @@ static int hotkey_read(char *p)
 
         if (mutex_lock_interruptible(&hotkey_mutex))
                 return -ERESTARTSYS;
-        res = hotkey_get(&status, &mask);
+        res = hotkey_status_get(&status);
+        if (!res)
+                res = hotkey_mask_get();
         mutex_unlock(&hotkey_mutex);
         if (res)
                 return res;
 
         len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
         if (tp_features.hotkey_mask) {
-                len += sprintf(p + len, "mask:\t\t0x%08x\n", mask);
+                len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
                 len += sprintf(p + len,
                                "commands:\tenable, disable, reset, <mask>\n");
         } else {
@@ -1367,7 +2264,6 @@ static int hotkey_write(char *buf)
         int res, status;
         u32 mask;
         char *cmd;
-        int do_cmd = 0;
 
         if (!tp_features.hotkey)
                 return -ENODEV;
@@ -1375,9 +2271,8 @@ static int hotkey_write(char *buf)
         if (mutex_lock_interruptible(&hotkey_mutex))
                 return -ERESTARTSYS;
 
-        res = hotkey_get(&status, &mask);
-        if (res)
-                goto errexit;
+        status = -1;
+        mask = hotkey_mask;
 
         res = 0;
         while ((cmd = next_cmd(&buf))) {
@@ -1396,11 +2291,12 @@ static int hotkey_write(char *buf)
                         res = -EINVAL;
                         goto errexit;
                 }
-                do_cmd = 1;
         }
+        if (status != -1)
+                res = hotkey_status_set(status);
 
-        if (do_cmd)
-                res = hotkey_set(status, mask);
+        if (!res && mask != hotkey_mask)
+                res = hotkey_mask_set(mask);
 
 errexit:
         mutex_unlock(&hotkey_mutex);
@@ -1408,7 +2304,7 @@ errexit:
 }
 
 static const struct acpi_device_id ibm_htk_device_ids[] = {
-        {IBM_HKEY_HID, 0},
+        {TPACPI_ACPI_HKEY_HID, 0},
         {"", 0},
 };
 
@@ -1425,6 +2321,7 @@ static struct ibm_struct hotkey_driver_data = {
         .write = hotkey_write,
         .exit = hotkey_exit,
         .resume = hotkey_resume,
+        .suspend = hotkey_suspend,
         .acpi = &ibm_hotkey_acpidriver,
 };
 
@@ -1432,6 +2329,16 @@ static struct ibm_struct hotkey_driver_data = {
  * Bluetooth subdriver
  */
 
+enum {
+        /* ACPI GBDC/SBDC bits */
+        TP_ACPI_BLUETOOTH_HWPRESENT     = 0x01, /* Bluetooth hw available */
+        TP_ACPI_BLUETOOTH_RADIOSSW      = 0x02, /* Bluetooth radio enabled */
+        TP_ACPI_BLUETOOTH_UNK           = 0x04, /* unknown function */
+};
+
+static int bluetooth_get_radiosw(void);
+static int bluetooth_set_radiosw(int radio_on);
+
 /* sysfs bluetooth enable ---------------------------------------------- */
 static ssize_t bluetooth_enable_show(struct device *dev,
                            struct device_attribute *attr,
@@ -1483,7 +2390,7 @@ static int __init bluetooth_init(struct ibm_init_struct *iibm)
 
         vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
 
-        IBM_ACPIHANDLE_INIT(hkey);
+        TPACPI_ACPIHANDLE_INIT(hkey);
 
         /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
            G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
@@ -1596,6 +2503,16 @@ static struct ibm_struct bluetooth_driver_data = {
  * Wan subdriver
  */
 
+enum {
+        /* ACPI GWAN/SWAN bits */
+        TP_ACPI_WANCARD_HWPRESENT       = 0x01, /* Wan hw available */
+        TP_ACPI_WANCARD_RADIOSSW        = 0x02, /* Wan radio enabled */
+        TP_ACPI_WANCARD_UNK             = 0x04, /* unknown function */
+};
+
+static int wan_get_radiosw(void);
+static int wan_set_radiosw(int radio_on);
+
 /* sysfs wan enable ---------------------------------------------------- */
 static ssize_t wan_enable_show(struct device *dev,
                            struct device_attribute *attr,
@@ -1647,7 +2564,7 @@ static int __init wan_init(struct ibm_init_struct *iibm)
 
         vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
 
-        IBM_ACPIHANDLE_INIT(hkey);
+        TPACPI_ACPIHANDLE_INIT(hkey);
 
         tp_features.wan = hkey_handle &&
             acpi_evalf(hkey_handle, &status, "GWAN", "qd");
@@ -1759,17 +2676,41 @@ static struct ibm_struct wan_driver_data = {
  * Video subdriver
  */
 
+enum video_access_mode {
+        TPACPI_VIDEO_NONE = 0,
+        TPACPI_VIDEO_570,       /* 570 */
+        TPACPI_VIDEO_770,       /* 600e/x, 770e, 770x */
+        TPACPI_VIDEO_NEW,       /* all others */
+};
+
+enum {  /* video status flags, based on VIDEO_570 */
+        TP_ACPI_VIDEO_S_LCD = 0x01,     /* LCD output enabled */
+        TP_ACPI_VIDEO_S_CRT = 0x02,     /* CRT output enabled */
+        TP_ACPI_VIDEO_S_DVI = 0x08,     /* DVI output enabled */
+};
+
+enum {  /* TPACPI_VIDEO_570 constants */
+        TP_ACPI_VIDEO_570_PHSCMD = 0x87,        /* unknown magic constant :( */
+        TP_ACPI_VIDEO_570_PHSMASK = 0x03,       /* PHS bits that map to
+                                                 * video_status_flags */
+        TP_ACPI_VIDEO_570_PHS2CMD = 0x8b,       /* unknown magic constant :( */
+        TP_ACPI_VIDEO_570_PHS2SET = 0x80,       /* unknown magic constant :( */
+};
+
 static enum video_access_mode video_supported;
 static int video_orig_autosw;
 
-IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA",      /* 570 */
+static int video_autosw_get(void);
+static int video_autosw_set(int enable);
+
+TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA",   /* 570 */
            "\\_SB.PCI0.AGP0.VID0",      /* 600e/x, 770x */
            "\\_SB.PCI0.VID0",   /* 770e */
            "\\_SB.PCI0.VID",    /* A21e, G4x, R50e, X30, X40 */
            "\\_SB.PCI0.AGP.VID",        /* all others */
            );                           /* R30, R31 */
 
-IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID");  /* G41 */
+TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID");       /* G41 */
 
 static int __init video_init(struct ibm_init_struct *iibm)
 {
@@ -1777,8 +2718,8 @@ static int __init video_init(struct ibm_init_struct *iibm)
 
         vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
 
-        IBM_ACPIHANDLE_INIT(vid);
-        IBM_ACPIHANDLE_INIT(vid2);
+        TPACPI_ACPIHANDLE_INIT(vid);
+        TPACPI_ACPIHANDLE_INIT(vid2);
 
         if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
                 /* G41, assume IVGA doesn't change */
@@ -1809,7 +2750,7 @@ static void video_exit(void)
         dbg_printk(TPACPI_DBG_EXIT,
                    "restoring original video autoswitch mode\n");
         if (video_autosw_set(video_orig_autosw))
-                printk(IBM_ERR "error while trying to restore original "
+                printk(TPACPI_ERR "error while trying to restore original "
                         "video autoswitch mode\n");
 }
 
@@ -1882,13 +2823,14 @@ static int video_outputsw_set(int status)
                 res = acpi_evalf(vid_handle, NULL,
                                  "ASWT", "vdd", status * 0x100, 0);
                 if (!autosw && video_autosw_set(autosw)) {
-                        printk(IBM_ERR "video auto-switch left enabled due to error\n");
+                        printk(TPACPI_ERR
+                               "video auto-switch left enabled due to error\n");
                         return -EIO;
                 }
                 break;
         case TPACPI_VIDEO_NEW:
                 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
-                        acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
+                      acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
                 break;
         default:
                 return -ENOSYS;
@@ -1951,7 +2893,8 @@ static int video_outputsw_cycle(void)
                 return -ENOSYS;
         }
         if (!autosw && video_autosw_set(autosw)) {
-                printk(IBM_ERR "video auto-switch left enabled due to error\n");
+                printk(TPACPI_ERR
+                       "video auto-switch left enabled due to error\n");
                 return -EIO;
         }
 
@@ -2080,16 +3023,16 @@ static struct ibm_struct video_driver_data = {
  * Light (thinklight) subdriver
  */
 
-IBM_HANDLE(lght, root, "\\LGHT");       /* A21e, A2xm/p, T20-22, X20-21 */
-IBM_HANDLE(ledb, ec, "LEDB");           /* G4x */
+TPACPI_HANDLE(lght, root, "\\LGHT");    /* A21e, A2xm/p, T20-22, X20-21 */
+TPACPI_HANDLE(ledb, ec, "LEDB");                /* G4x */
 
 static int __init light_init(struct ibm_init_struct *iibm)
 {
         vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
 
-        IBM_ACPIHANDLE_INIT(ledb);
-        IBM_ACPIHANDLE_INIT(lght);
-        IBM_ACPIHANDLE_INIT(cmos);
+        TPACPI_ACPIHANDLE_INIT(ledb);
+        TPACPI_ACPIHANDLE_INIT(lght);
+        TPACPI_ACPIHANDLE_INIT(cmos);
 
         /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
         tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
@@ -2167,14 +3110,18 @@ static struct ibm_struct light_driver_data = {
 
 #ifdef CONFIG_THINKPAD_ACPI_DOCK
 
-IBM_HANDLE(dock, root, "\\_SB.GDCK",    /* X30, X31, X40 */
+static void dock_notify(struct ibm_struct *ibm, u32 event);
+static int dock_read(char *p);
+static int dock_write(char *buf);
+
+TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
            "\\_SB.PCI0.DOCK",   /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
            "\\_SB.PCI0.PCI1.DOCK",      /* all others */
            "\\_SB.PCI.ISA.SLCE",        /* 570 */
     );                          /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
 
 /* don't list other alternatives as we install a notify handler on the 570 */
-IBM_HANDLE(pci, root, "\\_SB.PCI");     /* 570 */
+TPACPI_HANDLE(pci, root, "\\_SB.PCI");  /* 570 */
 
 static const struct acpi_device_id ibm_pci_device_ids[] = {
         {PCI_ROOT_HID_STRING, 0},
@@ -2217,7 +3164,7 @@ static int __init dock_init(struct ibm_init_struct *iibm)
 {
         vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
 
-        IBM_ACPIHANDLE_INIT(dock);
+        TPACPI_ACPIHANDLE_INIT(dock);
 
         vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
                 str_supported(dock_handle != NULL));
@@ -2233,7 +3180,7 @@ static int __init dock_init2(struct ibm_init_struct *iibm)
 
         if (dock_driver_data[0].flags.acpi_driver_registered &&
             dock_driver_data[0].flags.acpi_notify_installed) {
-                IBM_ACPIHANDLE_INIT(pci);
+                TPACPI_ACPIHANDLE_INIT(pci);
                 dock2_needed = (pci_handle != NULL);
                 vdbg_printk(TPACPI_DBG_INIT,
                             "dock PCI handler for the TP 570 is %s\n",
@@ -2265,7 +3212,7 @@ static void dock_notify(struct ibm_struct *ibm, u32 event)
         else if (event == 0 && docked)
                 data = 3;       /* dock */
         else {
-                printk(IBM_ERR "unknown dock event %d, status %d\n",
+                printk(TPACPI_ERR "unknown dock event %d, status %d\n",
                        event, _sta(dock_handle));
                 data = 0;       /* unknown */
         }
@@ -2321,18 +3268,19 @@ static int dock_write(char *buf)
  */
 
 #ifdef CONFIG_THINKPAD_ACPI_BAY
-IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST",        /* 570 */
+
+TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST",     /* 570 */
            "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
            "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
            "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
            );                           /* A21e, R30, R31 */
-IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
+TPACPI_HANDLE(bay_ej, bay, "_EJ3",      /* 600e/x, A2xm/p, A3x */
            "_EJ0",              /* all others */
            );                   /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
-IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV",     /* A3x, R32 */
+TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV",  /* A3x, R32 */
            "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
            );                           /* all others */
-IBM_HANDLE(bay2_ej, bay2, "_EJ3",       /* 600e/x, 770e, A3x */
+TPACPI_HANDLE(bay2_ej, bay2, "_EJ3",    /* 600e/x, 770e, A3x */
            "_EJ0",                      /* 770x */
            );                           /* all others */
 
@@ -2340,12 +3288,12 @@ static int __init bay_init(struct ibm_init_struct *iibm)
 {
         vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
 
-        IBM_ACPIHANDLE_INIT(bay);
+        TPACPI_ACPIHANDLE_INIT(bay);
         if (bay_handle)
-                IBM_ACPIHANDLE_INIT(bay_ej);
-        IBM_ACPIHANDLE_INIT(bay2);
+                TPACPI_ACPIHANDLE_INIT(bay_ej);
+        TPACPI_ACPIHANDLE_INIT(bay2);
         if (bay2_handle)
-                IBM_ACPIHANDLE_INIT(bay2_ej);
+                TPACPI_ACPIHANDLE_INIT(bay2_ej);
 
         tp_features.bay_status = bay_handle &&
                 acpi_evalf(bay_handle, NULL, "_STA", "qv");
@@ -2474,7 +3422,7 @@ static int __init cmos_init(struct ibm_init_struct *iibm)
         vdbg_printk(TPACPI_DBG_INIT,
                 "initializing cmos commands subdriver\n");
 
-        IBM_ACPIHANDLE_INIT(cmos);
+        TPACPI_ACPIHANDLE_INIT(cmos);
 
         vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
                 str_supported(cmos_handle != NULL));
@@ -2538,10 +3486,24 @@ static struct ibm_struct cmos_driver_data = {
  * LED subdriver
  */
 
+enum led_access_mode {
+        TPACPI_LED_NONE = 0,
+        TPACPI_LED_570, /* 570 */
+        TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
+        TPACPI_LED_NEW, /* all others */
+};
+
+enum {  /* For TPACPI_LED_OLD */
+        TPACPI_LED_EC_HLCL = 0x0c,      /* EC reg to get led to power on */
+        TPACPI_LED_EC_HLBL = 0x0d,      /* EC reg to blink a lit led */
+        TPACPI_LED_EC_HLMS = 0x0e,      /* EC reg to select led to command */
+};
+
 static enum led_access_mode led_supported;
 
-IBM_HANDLE(led, ec, "SLED",     /* 570 */
-           "SYSL",              /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
+TPACPI_HANDLE(led, ec, "SLED",  /* 570 */
+           "SYSL",              /* 600e/x, 770e, 770x, A21e, A2xm/p, */
+                                /* T20-22, X20-21 */
            "LED",               /* all others */
            );                   /* R30, R31 */
 
@@ -2549,7 +3511,7 @@ static int __init led_init(struct ibm_init_struct *iibm)
 {
         vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
 
-        IBM_ACPIHANDLE_INIT(led);
+        TPACPI_ACPIHANDLE_INIT(led);
 
         if (!led_handle)
                 /* led not supported on R30, R31 */
@@ -2638,13 +3600,11 @@ static int led_write(char *buf)
                         led = 1 << led;
                         ret = ec_write(TPACPI_LED_EC_HLMS, led);
                         if (ret >= 0)
-                                ret =
-                                    ec_write(TPACPI_LED_EC_HLBL,
-                                             led * led_exp_hlbl[ind]);
+                                ret = ec_write(TPACPI_LED_EC_HLBL,
+                                                led * led_exp_hlbl[ind]);
                         if (ret >= 0)
-                                ret =
-                                    ec_write(TPACPI_LED_EC_HLCL,
-                                             led * led_exp_hlcl[ind]);
+                                ret = ec_write(TPACPI_LED_EC_HLCL,
+                                                led * led_exp_hlcl[ind]);
                         if (ret < 0)
                                 return ret;
                 } else {
@@ -2668,13 +3628,13 @@ static struct ibm_struct led_driver_data = {
  * Beep subdriver
  */
 
-IBM_HANDLE(beep, ec, "BEEP");   /* all except R30, R31 */
+TPACPI_HANDLE(beep, ec, "BEEP");        /* all except R30, R31 */
 
 static int __init beep_init(struct ibm_init_struct *iibm)
 {
         vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
 
-        IBM_ACPIHANDLE_INIT(beep);
+        TPACPI_ACPIHANDLE_INIT(beep);
 
         vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
                 str_supported(beep_handle != NULL));
@@ -2727,8 +3687,109 @@ static struct ibm_struct beep_driver_data = {
  * Thermal subdriver
  */
 
+enum thermal_access_mode {
+        TPACPI_THERMAL_NONE = 0,        /* No thermal support */
+        TPACPI_THERMAL_ACPI_TMP07,      /* Use ACPI TMP0-7 */
+        TPACPI_THERMAL_ACPI_UPDT,       /* Use ACPI TMP0-7 with UPDT */
+        TPACPI_THERMAL_TPEC_8,          /* Use ACPI EC regs, 8 sensors */
+        TPACPI_THERMAL_TPEC_16,         /* Use ACPI EC regs, 16 sensors */
+};
+
+enum { /* TPACPI_THERMAL_TPEC_* */
+        TP_EC_THERMAL_TMP0 = 0x78,      /* ACPI EC regs TMP 0..7 */
+        TP_EC_THERMAL_TMP8 = 0xC0,      /* ACPI EC regs TMP 8..15 */
+        TP_EC_THERMAL_TMP_NA = -128,    /* ACPI EC sensor not available */
+};
+
+#define TPACPI_MAX_THERMAL_SENSORS 16   /* Max thermal sensors supported */
+struct ibm_thermal_sensors_struct {
+        s32 temp[TPACPI_MAX_THERMAL_SENSORS];
+};
+
 static enum thermal_access_mode thermal_read_mode;
 
+/* idx is zero-based */
+static int thermal_get_sensor(int idx, s32 *value)
+{
+        int t;
+        s8 tmp;
+        char tmpi[5];
+
+        t = TP_EC_THERMAL_TMP0;
+
+        switch (thermal_read_mode) {
+#if TPACPI_MAX_THERMAL_SENSORS >= 16
+        case TPACPI_THERMAL_TPEC_16:
+                if (idx >= 8 && idx <= 15) {
+                        t = TP_EC_THERMAL_TMP8;
+                        idx -= 8;
+                }
+                /* fallthrough */
+#endif
+        case TPACPI_THERMAL_TPEC_8:
+                if (idx <= 7) {
+                        if (!acpi_ec_read(t + idx, &tmp))
+                                return -EIO;
+                        *value = tmp * 1000;
+                        return 0;
+                }
+                break;
+
+        case TPACPI_THERMAL_ACPI_UPDT:
+                if (idx <= 7) {
+                        snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
+                        if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
+                                return -EIO;
+                        if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
+                                return -EIO;
+                        *value = (t - 2732) * 100;
+                        return 0;
+                }
+                break;
+
+        case TPACPI_THERMAL_ACPI_TMP07:
+                if (idx <= 7) {
+                        snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
+                        if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
+                                return -EIO;
+                        if (t > 127 || t < -127)
+                                t = TP_EC_THERMAL_TMP_NA;
+                        *value = t * 1000;
+                        return 0;
+                }
+                break;
+
+        case TPACPI_THERMAL_NONE:
+        default:
+                return -ENOSYS;
+        }
+
+        return -EINVAL;
+}
+
+static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
+{
+        int res, i;
+        int n;
+
+        n = 8;
+        i = 0;
+
+        if (!s)
+                return -EINVAL;
+
+        if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
+                n = 16;
+
+        for (i = 0 ; i < n; i++) {
+                res = thermal_get_sensor(i, &s->temp[i]);
+                if (res)
+                        return res;
+        }
+
+        return n;
+}
+
 /* sysfs temp##_input -------------------------------------------------- */
 
 static ssize_t thermal_temp_input_show(struct device *dev,
@@ -2751,7 +3812,8 @@ static ssize_t thermal_temp_input_show(struct device *dev,
 }
 
 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
-         SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, thermal_temp_input_show, NULL, _idxB)
+         SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
+                     thermal_temp_input_show, NULL, _idxB)
 
 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
         THERMAL_SENSOR_ATTR_TEMP(1, 0),
@@ -2845,12 +3907,13 @@ static int __init thermal_init(struct ibm_init_struct *iibm)
                 if (ta1 == 0) {
                         /* This is sheer paranoia, but we handle it anyway */
                         if (acpi_tmp7) {
-                                printk(IBM_ERR
+                                printk(TPACPI_ERR
                                        "ThinkPad ACPI EC access misbehaving, "
-                                       "falling back to ACPI TMPx access mode\n");
+                                       "falling back to ACPI TMPx access "
+                                       "mode\n");
                                 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
                         } else {
-                                printk(IBM_ERR
+                                printk(TPACPI_ERR
                                        "ThinkPad ACPI EC access misbehaving, "
                                        "disabling thermal sensors access\n");
                                 thermal_read_mode = TPACPI_THERMAL_NONE;
@@ -2877,7 +3940,7 @@ static int __init thermal_init(struct ibm_init_struct *iibm)
                 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
                 thermal_read_mode);
 
-        switch(thermal_read_mode) {
+        switch (thermal_read_mode) {
         case TPACPI_THERMAL_TPEC_16:
                 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
                                 &thermal_temp_input16_group);
@@ -2902,7 +3965,7 @@ static int __init thermal_init(struct ibm_init_struct *iibm)
 
 static void thermal_exit(void)
 {
-        switch(thermal_read_mode) {
+        switch (thermal_read_mode) {
         case TPACPI_THERMAL_TPEC_16:
                 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
                                    &thermal_temp_input16_group);
@@ -2919,88 +3982,6 @@ static void thermal_exit(void)
         }
 }
 
-/* idx is zero-based */
-static int thermal_get_sensor(int idx, s32 *value)
-{
-        int t;
-        s8 tmp;
-        char tmpi[5];
-
-        t = TP_EC_THERMAL_TMP0;
-
-        switch (thermal_read_mode) {
-#if TPACPI_MAX_THERMAL_SENSORS >= 16
-        case TPACPI_THERMAL_TPEC_16:
-                if (idx >= 8 && idx <= 15) {
-                        t = TP_EC_THERMAL_TMP8;
-                        idx -= 8;
-                }
-                /* fallthrough */
-#endif
-        case TPACPI_THERMAL_TPEC_8:
-                if (idx <= 7) {
-                        if (!acpi_ec_read(t + idx, &tmp))
-                                return -EIO;
-                        *value = tmp * 1000;
-                        return 0;
-                }
-                break;
-
-        case TPACPI_THERMAL_ACPI_UPDT:
-                if (idx <= 7) {
-                        snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
-                        if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
-                                return -EIO;
-                        if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
-                                return -EIO;
-                        *value = (t - 2732) * 100;
-                        return 0;
-                }
-                break;
-
-        case TPACPI_THERMAL_ACPI_TMP07:
-                if (idx <= 7) {
-                        snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
-                        if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
-                                return -EIO;
-                        if (t > 127 || t < -127)
-                                t = TP_EC_THERMAL_TMP_NA;
-                        *value = t * 1000;
-                        return 0;
-                }
-                break;
-
-        case TPACPI_THERMAL_NONE:
-        default:
-                return -ENOSYS;
-        }
-
-        return -EINVAL;
-}
-
-static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
-{
-        int res, i;
-        int n;
-
-        n = 8;
-        i = 0;
-
-        if (!s)
-                return -EINVAL;
-
-        if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
-                n = 16;
-
-        for(i = 0 ; i < n; i++) {
-                res = thermal_get_sensor(i, &s->temp[i]);
-                if (res)
-                        return res;
-        }
-
-        return n;
-}
-
 static int thermal_read(char *p)
 {
         int len = 0;
@@ -3103,14 +4084,110 @@ static struct ibm_struct ecdump_driver_data = {
  * Backlight/brightness subdriver
  */
 
+#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
+
 static struct backlight_device *ibm_backlight_device;
+static int brightness_offset = 0x31;
+static int brightness_mode;
+static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
+
+static struct mutex brightness_mutex;
+
+/*
+ * ThinkPads can read brightness from two places: EC 0x31, or
+ * CMOS NVRAM byte 0x5E, bits 0-3.
+ */
+static int brightness_get(struct backlight_device *bd)
+{
+        u8 lec = 0, lcmos = 0, level = 0;
+
+        if (brightness_mode & 1) {
+                if (!acpi_ec_read(brightness_offset, &lec))
+                        return -EIO;
+                lec &= (tp_features.bright_16levels)? 0x0f : 0x07;
+                level = lec;
+        };
+        if (brightness_mode & 2) {
+                lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
+                         & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
+                        >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
+                lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07;
+                level = lcmos;
+        }
+
+        if (brightness_mode == 3 && lec != lcmos) {
+                printk(TPACPI_ERR
+                        "CMOS NVRAM (%u) and EC (%u) do not agree "
+                        "on display brightness level\n",
+                        (unsigned int) lcmos,
+                        (unsigned int) lec);
+                return -EIO;
+        }
+
+        return level;
+}
+
+/* May return EINTR which can always be mapped to ERESTARTSYS */
+static int brightness_set(int value)
+{
+        int cmos_cmd, inc, i, res;
+        int current_value;
+
+        if (value > ((tp_features.bright_16levels)? 15 : 7))
+                return -EINVAL;
+
+        res = mutex_lock_interruptible(&brightness_mutex);
+        if (res < 0)
+                return res;
+
+        current_value = brightness_get(NULL);
+        if (current_value < 0) {
+                res = current_value;
+                goto errout;
+        }
+
+        cmos_cmd = value > current_value ?
+                        TP_CMOS_BRIGHTNESS_UP :
+                        TP_CMOS_BRIGHTNESS_DOWN;
+        inc = (value > current_value)? 1 : -1;
+
+        res = 0;
+        for (i = current_value; i != value; i += inc) {
+                if ((brightness_mode & 2) &&
+                    issue_thinkpad_cmos_command(cmos_cmd)) {
+                        res = -EIO;
+                        goto errout;
+                }
+                if ((brightness_mode & 1) &&
+                    !acpi_ec_write(brightness_offset, i + inc)) {
+                        res = -EIO;
+                        goto errout;;
+                }
+        }
+
+errout:
+        mutex_unlock(&brightness_mutex);
+        return res;
+}
+
+/* sysfs backlight class ----------------------------------------------- */
+
+static int brightness_update_status(struct backlight_device *bd)
+{
+        /* it is the backlight class's job (caller) to handle
+         * EINTR and other errors properly */
+        return brightness_set(
+                (bd->props.fb_blank == FB_BLANK_UNBLANK &&
+                 bd->props.power == FB_BLANK_UNBLANK) ?
+                                bd->props.brightness : 0);
+}
 
 static struct backlight_ops ibm_backlight_data = {
-        .get_brightness = brightness_get,
-        .update_status  = brightness_update_status,
+        .get_brightness = brightness_get,
+        .update_status  = brightness_update_status,
 };
 
-static struct mutex brightness_mutex;
+/* --------------------------------------------------------------------- */
 
 static int __init tpacpi_query_bcll_levels(acpi_handle handle)
 {
@@ -3121,8 +4198,8 @@ static int __init tpacpi_query_bcll_levels(acpi_handle handle)
         if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
                 obj = (union acpi_object *)buffer.pointer;
                 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
-                        printk(IBM_ERR "Unknown BCLL data, "
-                               "please report this to %s\n", IBM_MAIL);
+                        printk(TPACPI_ERR "Unknown BCLL data, "
+                               "please report this to %s\n", TPACPI_MAIL);
                         rc = 0;
                 } else {
                         rc = obj->package.count;
@@ -3160,14 +4237,15 @@ static int __init brightness_check_levels(void)
         void *found_node = NULL;
 
         if (!vid_handle) {
-                IBM_ACPIHANDLE_INIT(vid);
+                TPACPI_ACPIHANDLE_INIT(vid);
         }
         if (!vid_handle)
                 return 0;
 
         /* Search for a BCLL package with 16 levels */
         status = acpi_walk_namespace(ACPI_TYPE_PACKAGE, vid_handle, 3,
-                                        brightness_find_bcll, NULL, &found_node);
+                                        brightness_find_bcll, NULL,
+                                        &found_node);
 
         return (ACPI_SUCCESS(status) && found_node != NULL);
 }
@@ -3193,14 +4271,14 @@ static int __init brightness_check_std_acpi_support(void)
         void *found_node = NULL;
 
         if (!vid_handle) {
-                IBM_ACPIHANDLE_INIT(vid);
+                TPACPI_ACPIHANDLE_INIT(vid);
         }
         if (!vid_handle)
                 return 0;
 
         /* Search for a _BCL method, but don't execute it */
         status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
-                                     brightness_find_bcl, NULL, &found_node);
+                                     brightness_find_bcl, NULL, &found_node);
 
         return (ACPI_SUCCESS(status) && found_node != NULL);
 }
@@ -3215,12 +4293,14 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
 
         if (!brightness_enable) {
                 dbg_printk(TPACPI_DBG_INIT,
-                           "brightness support disabled by module parameter\n");
+                           "brightness support disabled by "
+                           "module parameter\n");
                 return 1;
         } else if (brightness_enable > 1) {
                 if (brightness_check_std_acpi_support()) {
-                        printk(IBM_NOTICE
-                               "standard ACPI backlight interface available, not loading native one...\n");
+                        printk(TPACPI_NOTICE
+                               "standard ACPI backlight interface "
+                               "available, not loading native one...\n");
                         return 1;
                 }
         }
@@ -3247,13 +4327,14 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
                 return 1;
 
         if (tp_features.bright_16levels)
-                printk(IBM_INFO "detected a 16-level brightness capable ThinkPad\n");
+                printk(TPACPI_INFO
+                       "detected a 16-level brightness capable ThinkPad\n");
 
         ibm_backlight_device = backlight_device_register(
                                         TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
                                         &ibm_backlight_data);
         if (IS_ERR(ibm_backlight_device)) {
-                printk(IBM_ERR "Could not register backlight device\n");
+                printk(TPACPI_ERR "Could not register backlight device\n");
                 return PTR_ERR(ibm_backlight_device);
         }
         vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
@@ -3276,99 +4357,13 @@ static void brightness_exit(void)
         }
 }
 
-static int brightness_update_status(struct backlight_device *bd)
-{
-        /* it is the backlight class's job (caller) to handle
-         * EINTR and other errors properly */
-        return brightness_set(
-                (bd->props.fb_blank == FB_BLANK_UNBLANK &&
-                 bd->props.power == FB_BLANK_UNBLANK) ?
-                                bd->props.brightness : 0);
-}
-
-/*
- * ThinkPads can read brightness from two places: EC 0x31, or
- * CMOS NVRAM byte 0x5E, bits 0-3.
- */
-static int brightness_get(struct backlight_device *bd)
-{
-        u8 lec = 0, lcmos = 0, level = 0;
-
-        if (brightness_mode & 1) {
-                if (!acpi_ec_read(brightness_offset, &lec))
-                        return -EIO;
-                lec &= (tp_features.bright_16levels)? 0x0f : 0x07;
-                level = lec;
-        };
-        if (brightness_mode & 2) {
-                lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
-                         & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
-                        >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
-                lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07;
-                level = lcmos;
-        }
-
-        if (brightness_mode == 3 && lec != lcmos) {
-                printk(IBM_ERR
-                        "CMOS NVRAM (%u) and EC (%u) do not agree "
-                        "on display brightness level\n",
-                        (unsigned int) lcmos,
-                        (unsigned int) lec);
-                return -EIO;
-        }
-
-        return level;
-}
-
-/* May return EINTR which can always be mapped to ERESTARTSYS */
-static int brightness_set(int value)
-{
-        int cmos_cmd, inc, i, res;
-        int current_value;
-
-        if (value > ((tp_features.bright_16levels)? 15 : 7))
-                return -EINVAL;
-
-        res = mutex_lock_interruptible(&brightness_mutex);
-        if (res < 0)
-                return res;
-
-        current_value = brightness_get(NULL);
-        if (current_value < 0) {
-                res = current_value;
-                goto errout;
-        }
-
-        cmos_cmd = value > current_value ?
-                        TP_CMOS_BRIGHTNESS_UP :
-                        TP_CMOS_BRIGHTNESS_DOWN;
-        inc = (value > current_value)? 1 : -1;
-
-        res = 0;
-        for (i = current_value; i != value; i += inc) {
-                if ((brightness_mode & 2) &&
-                    issue_thinkpad_cmos_command(cmos_cmd)) {
-                        res = -EIO;
-                        goto errout;
-                }
-                if ((brightness_mode & 1) &&
-                    !acpi_ec_write(brightness_offset, i + inc)) {
-                        res = -EIO;
-                        goto errout;;
-                }
-        }
-
-errout:
-        mutex_unlock(&brightness_mutex);
-        return res;
-}
-
 static int brightness_read(char *p)
 {
         int len = 0;
         int level;
 
-        if ((level = brightness_get(NULL)) < 0) {
+        level = brightness_get(NULL);
+        if (level < 0) {
                 len += sprintf(p + len, "level:\t\tunreadable\n");
         } else {
                 len += sprintf(p + len, "level:\t\t%d\n", level);
@@ -3425,6 +4420,8 @@ static struct ibm_struct brightness_driver_data = {
  * Volume subdriver
  */
 
+static int volume_offset = 0x30;
+
 static int volume_read(char *p)
 {
         int len = 0;
@@ -3474,8 +4471,11 @@ static int volume_write(char *buf)
                 } else
                         return -EINVAL;
 
-                if (new_level != level) {       /* mute doesn't change */
-                        cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
+                if (new_level != level) {
+                        /* mute doesn't change */
+
+                        cmos_cmd = (new_level > level) ?
+                                        TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
                         inc = new_level > level ? 1 : -1;
 
                         if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
@@ -3487,14 +4487,18 @@ static int volume_write(char *buf)
                                     !acpi_ec_write(volume_offset, i + inc))
                                         return -EIO;
 
-                        if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
-                                     !acpi_ec_write(volume_offset,
-                                                    new_level + mute)))
+                        if (mute &&
+                            (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
+                             !acpi_ec_write(volume_offset, new_level + mute))) {
                                 return -EIO;
+                        }
                 }
 
-                if (new_mute != mute) { /* level doesn't change */
-                        cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
+                if (new_mute != mute) {
+                        /* level doesn't change */
+
+                        cmos_cmd = (new_mute) ?
+                                   TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
 
                         if (issue_thinkpad_cmos_command(cmos_cmd) ||
                             !acpi_ec_write(volume_offset, level + new_mute))
@@ -3616,26 +4620,377 @@ static struct ibm_struct volume_driver_data = {
  *      but the ACPI tables just mention level 7.
  */
 
+enum {                                  /* Fan control constants */
+        fan_status_offset = 0x2f,       /* EC register 0x2f */
+        fan_rpm_offset = 0x84,          /* EC register 0x84: LSB, 0x85 MSB (RPM)
+                                         * 0x84 must be read before 0x85 */
+
+        TP_EC_FAN_FULLSPEED = 0x40,     /* EC fan mode: full speed */
+        TP_EC_FAN_AUTO      = 0x80,     /* EC fan mode: auto fan control */
+
+        TPACPI_FAN_LAST_LEVEL = 0x100,  /* Use cached last-seen fan level */
+};
+
+enum fan_status_access_mode {
+        TPACPI_FAN_NONE = 0,            /* No fan status or control */
+        TPACPI_FAN_RD_ACPI_GFAN,        /* Use ACPI GFAN */
+        TPACPI_FAN_RD_TPEC,             /* Use ACPI EC regs 0x2f, 0x84-0x85 */
+};
+
+enum fan_control_access_mode {
+        TPACPI_FAN_WR_NONE = 0,         /* No fan control */
+        TPACPI_FAN_WR_ACPI_SFAN,        /* Use ACPI SFAN */
+        TPACPI_FAN_WR_TPEC,             /* Use ACPI EC reg 0x2f */
+        TPACPI_FAN_WR_ACPI_FANS,        /* Use ACPI FANS and EC reg 0x2f */
+};
+
+enum fan_control_commands {
+        TPACPI_FAN_CMD_SPEED    = 0x0001,       /* speed command */
+        TPACPI_FAN_CMD_LEVEL    = 0x0002,       /* level command  */
+        TPACPI_FAN_CMD_ENABLE   = 0x0004,       /* enable/disable cmd,
+                                                 * and also watchdog cmd */
+};
+
+static int fan_control_allowed;
+
 static enum fan_status_access_mode fan_status_access_mode;
 static enum fan_control_access_mode fan_control_access_mode;
 static enum fan_control_commands fan_control_commands;
 
 static u8 fan_control_initial_status;
 static u8 fan_control_desired_level;
+static int fan_watchdog_maxinterval;
+
+static struct mutex fan_mutex;
 
 static void fan_watchdog_fire(struct work_struct *ignored);
-static int fan_watchdog_maxinterval;
 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
 
-IBM_HANDLE(fans, ec, "FANS");   /* X31, X40, X41 */
-IBM_HANDLE(gfan, ec, "GFAN",    /* 570 */
+TPACPI_HANDLE(fans, ec, "FANS");        /* X31, X40, X41 */
+TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
            "\\FSPD",            /* 600e/x, 770e, 770x */
            );                   /* all others */
-IBM_HANDLE(sfan, ec, "SFAN",    /* 570 */
+TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
            "JFNS",              /* 770x-JL */
            );                   /* all others */
 
 /*
+ * Call with fan_mutex held
+ */
+static void fan_update_desired_level(u8 status)
+{
+        if ((status &
+             (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
+                if (status > 7)
+                        fan_control_desired_level = 7;
+                else
+                        fan_control_desired_level = status;
+        }
+}
+
+static int fan_get_status(u8 *status)
+{
+        u8 s;
+
+        /* TODO:
+         * Add TPACPI_FAN_RD_ACPI_FANS ? */
+
+        switch (fan_status_access_mode) {
+        case TPACPI_FAN_RD_ACPI_GFAN:
+                /* 570, 600e/x, 770e, 770x */
+
+                if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
+                        return -EIO;
+
+                if (likely(status))
+                        *status = s & 0x07;
+
+                break;
+
+        case TPACPI_FAN_RD_TPEC:
+                /* all except 570, 600e/x, 770e, 770x */
+                if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
+                        return -EIO;
+
+                if (likely(status))
+                        *status = s;
+
+                break;
+
+        default:
+                return -ENXIO;
+        }
+
+        return 0;
+}
+
+static int fan_get_status_safe(u8 *status)
+{
+        int rc;
+        u8 s;
+
+        if (mutex_lock_interruptible(&fan_mutex))
+                return -ERESTARTSYS;
+        rc = fan_get_status(&s);
+        if (!rc)
+                fan_update_desired_level(s);
+        mutex_unlock(&fan_mutex);
+
+        if (status)
+                *status = s;
+
+        return rc;
+}
+
+static int fan_get_speed(unsigned int *speed)
+{
+        u8 hi, lo;
+
+        switch (fan_status_access_mode) {
+        case TPACPI_FAN_RD_TPEC:
+                /* all except 570, 600e/x, 770e, 770x */
+                if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
+                             !acpi_ec_read(fan_rpm_offset + 1, &hi)))
+                        return -EIO;
+
+                if (likely(speed))
+                        *speed = (hi << 8) | lo;
+
+                break;
+
+        default:
+                return -ENXIO;
+        }
+
+        return 0;
+}
+
+static int fan_set_level(int level)
+{
+        if (!fan_control_allowed)
+                return -EPERM;
+
+        switch (fan_control_access_mode) {
+        case TPACPI_FAN_WR_ACPI_SFAN:
+                if (level >= 0 && level <= 7) {
+                        if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
+                                return -EIO;
+                } else
+                        return -EINVAL;
+                break;
+
+        case TPACPI_FAN_WR_ACPI_FANS:
+        case TPACPI_FAN_WR_TPEC:
+                if ((level != TP_EC_FAN_AUTO) &&
+                    (level != TP_EC_FAN_FULLSPEED) &&
+                    ((level < 0) || (level > 7)))
+                        return -EINVAL;
+
+                /* safety net should the EC not support AUTO
+                 * or FULLSPEED mode bits and just ignore them */
+                if (level & TP_EC_FAN_FULLSPEED)
+                        level |= 7;     /* safety min speed 7 */
+                else if (level & TP_EC_FAN_AUTO)
+                        level |= 4;     /* safety min speed 4 */
+
+                if (!acpi_ec_write(fan_status_offset, level))
+                        return -EIO;
+                else
+                        tp_features.fan_ctrl_status_undef = 0;
+                break;
+
+        default:
+                return -ENXIO;
+        }
+        return 0;
+}
+
+static int fan_set_level_safe(int level)
+{
+        int rc;
+
+        if (!fan_control_allowed)
+                return -EPERM;
+
+        if (mutex_lock_interruptible(&fan_mutex))
+                return -ERESTARTSYS;
+
+        if (level == TPACPI_FAN_LAST_LEVEL)
+                level = fan_control_desired_level;
+
+        rc = fan_set_level(level);
+        if (!rc)
+                fan_update_desired_level(level);
+
+        mutex_unlock(&fan_mutex);
+        return rc;
+}
+
+static int fan_set_enable(void)
+{
+        u8 s;
+        int rc;
+
+        if (!fan_control_allowed)
+                return -EPERM;
+
+        if (mutex_lock_interruptible(&fan_mutex))
+                return -ERESTARTSYS;
+
+        switch (fan_control_access_mode) {
+        case TPACPI_FAN_WR_ACPI_FANS:
+        case TPACPI_FAN_WR_TPEC:
+                rc = fan_get_status(&s);
+                if (rc < 0)
+                        break;
+
+                /* Don't go out of emergency fan mode */
+                if (s != 7) {
+                        s &= 0x07;
+                        s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
+                }
+
+                if (!acpi_ec_write(fan_status_offset, s))
+                        rc = -EIO;
+                else {
+                        tp_features.fan_ctrl_status_undef = 0;
+                        rc = 0;
+                }
+                break;
+
+        case TPACPI_FAN_WR_ACPI_SFAN:
+                rc = fan_get_status(&s);
+                if (rc < 0)
+                        break;
+
+                s &= 0x07;
+
+                /* Set fan to at least level 4 */
+                s |= 4;
+
+                if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
+                        rc = -EIO;
+                else
+                        rc = 0;
+                break;
+
+        default:
+                rc = -ENXIO;
+        }
+
+        mutex_unlock(&fan_mutex);
+        return rc;
+}
+
+static int fan_set_disable(void)
+{
+        int rc;
+
+        if (!fan_control_allowed)
+                return -EPERM;
+
+        if (mutex_lock_interruptible(&fan_mutex))
+                return -ERESTARTSYS;
+
+        rc = 0;
+        switch (fan_control_access_mode) {
+        case TPACPI_FAN_WR_ACPI_FANS:
+        case TPACPI_FAN_WR_TPEC:
+                if (!acpi_ec_write(fan_status_offset, 0x00))
+                        rc = -EIO;
+                else {
+                        fan_control_desired_level = 0;
+                        tp_features.fan_ctrl_status_undef = 0;
+                }
+                break;
+
+        case TPACPI_FAN_WR_ACPI_SFAN:
+                if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
+                        rc = -EIO;
+                else
+                        fan_control_desired_level = 0;
+                break;
+
+        default:
+                rc = -ENXIO;
+        }
+
+
+        mutex_unlock(&fan_mutex);
+        return rc;
+}
+
+static int fan_set_speed(int speed)
+{
+        int rc;
+
+        if (!fan_control_allowed)
+                return -EPERM;
+
+        if (mutex_lock_interruptible(&fan_mutex))
+                return -ERESTARTSYS;
+
+        rc = 0;
+        switch (fan_control_access_mode) {
+        case TPACPI_FAN_WR_ACPI_FANS:
+                if (speed >= 0 && speed <= 65535) {
+                        if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
+                                        speed, speed, speed))
+                                rc = -EIO;
+                } else
+                        rc = -EINVAL;
+                break;
+
+        default:
+                rc = -ENXIO;
+        }
+
+        mutex_unlock(&fan_mutex);
+        return rc;
+}
+
+static void fan_watchdog_reset(void)
+{
+        static int fan_watchdog_active;
+
+        if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
+                return;
+
+        if (fan_watchdog_active)
+                cancel_delayed_work(&fan_watchdog_task);
+
+        if (fan_watchdog_maxinterval > 0 &&
+            tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
+                fan_watchdog_active = 1;
+                if (!schedule_delayed_work(&fan_watchdog_task,
+                                msecs_to_jiffies(fan_watchdog_maxinterval
+                                                 * 1000))) {
+                        printk(TPACPI_ERR
+                               "failed to schedule the fan watchdog, "
+                               "watchdog will not trigger\n");
+                }
+        } else
+                fan_watchdog_active = 0;
+}
+
+static void fan_watchdog_fire(struct work_struct *ignored)
+{
+        int rc;
+
+        if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
+                return;
+
+        printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
+        rc = fan_set_enable();
+        if (rc < 0) {
+                printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
+                        "will try again later...\n", -rc);
+                /* reschedule for later */
+                fan_watchdog_reset();
+        }
+}
+
+/*
  * SYSFS fan layout: hwmon compatible (device)
  *
  * pwm*_enable:
@@ -3868,9 +5223,9 @@ static int __init fan_init(struct ibm_init_struct *iibm)
         tp_features.fan_ctrl_status_undef = 0;
         fan_control_desired_level = 7;
 
-        IBM_ACPIHANDLE_INIT(fans);
-        IBM_ACPIHANDLE_INIT(gfan);
-        IBM_ACPIHANDLE_INIT(sfan);
+        TPACPI_ACPIHANDLE_INIT(fans);
+        TPACPI_ACPIHANDLE_INIT(gfan);
+        TPACPI_ACPIHANDLE_INIT(sfan);
 
         if (gfan_handle) {
                 /* 570, 600e/x, 770e, 770x */
@@ -3896,16 +5251,16 @@ static int __init fan_init(struct ibm_init_struct *iibm)
                                 case 0x3837: /* TP-78 */
                                 case 0x3637: /* TP-76 */
                                 case 0x3037: /* TP-70 */
-                                        printk(IBM_NOTICE
-                                               "fan_init: initial fan status is "
-                                               "unknown, assuming it is in auto "
-                                               "mode\n");
+                                        printk(TPACPI_NOTICE
+                                               "fan_init: initial fan status "
+                                               "is unknown, assuming it is "
+                                               "in auto mode\n");
                                         tp_features.fan_ctrl_status_undef = 1;
                                         ;;
                                 }
                         }
                 } else {
-                        printk(IBM_ERR
+                        printk(TPACPI_ERR
                                "ThinkPad ACPI EC access misbehaving, "
                                "fan status and control unavailable\n");
                         return 1;
@@ -3970,333 +5325,20 @@ static int __init fan_init(struct ibm_init_struct *iibm)
                 return 1;
 }
 
-/*
- * Call with fan_mutex held
- */
-static void fan_update_desired_level(u8 status)
-{
-        if ((status &
-             (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
-                if (status > 7)
-                        fan_control_desired_level = 7;
-                else
-                        fan_control_desired_level = status;
-        }
-}
-
-static int fan_get_status(u8 *status)
-{
-        u8 s;
-
-        /* TODO:
-         * Add TPACPI_FAN_RD_ACPI_FANS ? */
-
-        switch (fan_status_access_mode) {
-        case TPACPI_FAN_RD_ACPI_GFAN:
-                /* 570, 600e/x, 770e, 770x */
-
-                if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
-                        return -EIO;
-
-                if (likely(status))
-                        *status = s & 0x07;
-
-                break;
-
-        case TPACPI_FAN_RD_TPEC:
-                /* all except 570, 600e/x, 770e, 770x */
-                if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
-                        return -EIO;
-
-                if (likely(status))
-                        *status = s;
-
-                break;
-
-        default:
-                return -ENXIO;
-        }
-
-        return 0;
-}
-
-static int fan_get_status_safe(u8 *status)
-{
-        int rc;
-        u8 s;
-
-        if (mutex_lock_interruptible(&fan_mutex))
-                return -ERESTARTSYS;
-        rc = fan_get_status(&s);
-        if (!rc)
-                fan_update_desired_level(s);
-        mutex_unlock(&fan_mutex);
-
-        if (status)
-                *status = s;
-
-        return rc;
-}
-
 static void fan_exit(void)
 {
-        vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n");
+        vdbg_printk(TPACPI_DBG_EXIT,
+                    "cancelling any pending fan watchdog tasks\n");
 
         /* FIXME: can we really do this unconditionally? */
         sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
-        driver_remove_file(&tpacpi_hwmon_pdriver.driver, &driver_attr_fan_watchdog);
+        driver_remove_file(&tpacpi_hwmon_pdriver.driver,
+                           &driver_attr_fan_watchdog);
 
         cancel_delayed_work(&fan_watchdog_task);
         flush_scheduled_work();
 }
 
-static int fan_get_speed(unsigned int *speed)
-{
-        u8 hi, lo;
-
-        switch (fan_status_access_mode) {
-        case TPACPI_FAN_RD_TPEC:
-                /* all except 570, 600e/x, 770e, 770x */
-                if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
-                             !acpi_ec_read(fan_rpm_offset + 1, &hi)))
-                        return -EIO;
-
-                if (likely(speed))
-                        *speed = (hi << 8) | lo;
-
-                break;
-
-        default:
-                return -ENXIO;
-        }
-
-        return 0;
-}
-
-static void fan_watchdog_fire(struct work_struct *ignored)
-{
-        int rc;
-
-        if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
-                return;
-
-        printk(IBM_NOTICE "fan watchdog: enabling fan\n");
-        rc = fan_set_enable();
-        if (rc < 0) {
-                printk(IBM_ERR "fan watchdog: error %d while enabling fan, "
-                        "will try again later...\n", -rc);
-                /* reschedule for later */
-                fan_watchdog_reset();
-        }
-}
-
-static void fan_watchdog_reset(void)
-{
-        static int fan_watchdog_active;
-
-        if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
-                return;
-
-        if (fan_watchdog_active)
-                cancel_delayed_work(&fan_watchdog_task);
-
-        if (fan_watchdog_maxinterval > 0 &&
-            tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
-                fan_watchdog_active = 1;
-                if (!schedule_delayed_work(&fan_watchdog_task,
-                                msecs_to_jiffies(fan_watchdog_maxinterval
-                                                 * 1000))) {
-                        printk(IBM_ERR "failed to schedule the fan watchdog, "
-                               "watchdog will not trigger\n");
-                }
-        } else
-                fan_watchdog_active = 0;
-}
-
-static int fan_set_level(int level)
-{
-        if (!fan_control_allowed)
-                return -EPERM;
-
-        switch (fan_control_access_mode) {
-        case TPACPI_FAN_WR_ACPI_SFAN:
-                if (level >= 0 && level <= 7) {
-                        if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
-                                return -EIO;
-                } else
-                        return -EINVAL;
-                break;
-
-        case TPACPI_FAN_WR_ACPI_FANS:
-        case TPACPI_FAN_WR_TPEC:
-                if ((level != TP_EC_FAN_AUTO) &&
-                    (level != TP_EC_FAN_FULLSPEED) &&
-                    ((level < 0) || (level > 7)))
-                        return -EINVAL;
-
-                /* safety net should the EC not support AUTO
-                 * or FULLSPEED mode bits and just ignore them */
-                if (level & TP_EC_FAN_FULLSPEED)
-                        level |= 7;     /* safety min speed 7 */
-                else if (level & TP_EC_FAN_FULLSPEED)
-                        level |= 4;     /* safety min speed 4 */
-
-                if (!acpi_ec_write(fan_status_offset, level))
-                        return -EIO;
-                else
-                        tp_features.fan_ctrl_status_undef = 0;
-                break;
-
-        default:
-                return -ENXIO;
-        }
-        return 0;
-}
-
-static int fan_set_level_safe(int level)
-{
-        int rc;
-
-        if (!fan_control_allowed)
-                return -EPERM;
-
-        if (mutex_lock_interruptible(&fan_mutex))
-                return -ERESTARTSYS;
-
-        if (level == TPACPI_FAN_LAST_LEVEL)
-                level = fan_control_desired_level;
-
-        rc = fan_set_level(level);
-        if (!rc)
-                fan_update_desired_level(level);
-
-        mutex_unlock(&fan_mutex);
-        return rc;
-}
-
-static int fan_set_enable(void)
-{
-        u8 s;
-        int rc;
-
-        if (!fan_control_allowed)
-                return -EPERM;
-
-        if (mutex_lock_interruptible(&fan_mutex))
-                return -ERESTARTSYS;
-
-        switch (fan_control_access_mode) {
-        case TPACPI_FAN_WR_ACPI_FANS:
-        case TPACPI_FAN_WR_TPEC:
-                rc = fan_get_status(&s);
-                if (rc < 0)
-                        break;
-
-                /* Don't go out of emergency fan mode */
-                if (s != 7) {
-                        s &= 0x07;
-                        s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
-                }
-
-                if (!acpi_ec_write(fan_status_offset, s))
-                        rc = -EIO;
-                else {
-                        tp_features.fan_ctrl_status_undef = 0;
-                        rc = 0;
-                }
-                break;
-
-        case TPACPI_FAN_WR_ACPI_SFAN:
-                rc = fan_get_status(&s);
-                if (rc < 0)
-                        break;
-
-                s &= 0x07;
-
-                /* Set fan to at least level 4 */
-                s |= 4;
-
-                if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
-                        rc= -EIO;
-                else
-                        rc = 0;
-                break;
-
-        default:
-                rc = -ENXIO;
-        }
-
-        mutex_unlock(&fan_mutex);
-        return rc;
-}
-
-static int fan_set_disable(void)
-{
-        int rc;
-
-        if (!fan_control_allowed)
-                return -EPERM;
-
-        if (mutex_lock_interruptible(&fan_mutex))
-                return -ERESTARTSYS;
-
-        rc = 0;
-        switch (fan_control_access_mode) {
-        case TPACPI_FAN_WR_ACPI_FANS:
-        case TPACPI_FAN_WR_TPEC:
-                if (!acpi_ec_write(fan_status_offset, 0x00))
-                        rc = -EIO;
-                else {
-                        fan_control_desired_level = 0;
-                        tp_features.fan_ctrl_status_undef = 0;
-                }
-                break;
-
-        case TPACPI_FAN_WR_ACPI_SFAN:
-                if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
-                        rc = -EIO;
-                else
-                        fan_control_desired_level = 0;
-                break;
-
-        default:
-                rc = -ENXIO;
-        }
-
-
-        mutex_unlock(&fan_mutex);
-        return rc;
-}
-
-static int fan_set_speed(int speed)
-{
-        int rc;
-
-        if (!fan_control_allowed)
-                return -EPERM;
-
-        if (mutex_lock_interruptible(&fan_mutex))
-                return -ERESTARTSYS;
-
-        rc = 0;
-        switch (fan_control_access_mode) {
-        case TPACPI_FAN_WR_ACPI_FANS:
-                if (speed >= 0 && speed <= 65535) {
-                        if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
-                                        speed, speed, speed))
-                                rc = -EIO;
-                } else
-                        rc = -EINVAL;
-                break;
-
-        default:
-                rc = -ENXIO;
-        }
-
-        mutex_unlock(&fan_mutex);
-        return rc;
-}
-
 static int fan_read(char *p)
 {
         int len = 0;
@@ -4307,7 +5349,8 @@ static int fan_read(char *p)
         switch (fan_status_access_mode) {
         case TPACPI_FAN_RD_ACPI_GFAN:
                 /* 570, 600e/x, 770e, 770x */
-                if ((rc = fan_get_status_safe(&status)) < 0)
+                rc = fan_get_status_safe(&status);
+                if (rc < 0)
                         return rc;
 
                 len += sprintf(p + len, "status:\t\t%s\n"
@@ -4317,7 +5360,8 @@ static int fan_read(char *p)
 
         case TPACPI_FAN_RD_TPEC:
                 /* all except 570, 600e/x, 770e, 770x */
-                if ((rc = fan_get_status_safe(&status)) < 0)
+                rc = fan_get_status_safe(&status);
+                if (rc < 0)
                         return rc;
 
                 if (unlikely(tp_features.fan_ctrl_status_undef)) {
@@ -4332,7 +5376,8 @@ static int fan_read(char *p)
                 len += sprintf(p + len, "status:\t\t%s\n",
                                (status != 0) ? "enabled" : "disabled");
 
-                if ((rc = fan_get_speed(&speed)) < 0)
+                rc = fan_get_speed(&speed);
+                if (rc < 0)
                         return rc;
 
                 len += sprintf(p + len, "speed:\t\t%d\n", speed);
@@ -4368,8 +5413,8 @@ static int fan_read(char *p)
 
         if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
                 len += sprintf(p + len, "commands:\tenable, disable\n"
-                               "commands:\twatchdog <timeout> (<timeout> is 0 (off), "
-                               "1-120 (seconds))\n");
+                               "commands:\twatchdog <timeout> (<timeout> "
+                               "is 0 (off), 1-120 (seconds))\n");
 
         if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
                 len += sprintf(p + len, "commands:\tspeed <speed>"
@@ -4385,13 +5430,14 @@ static int fan_write_cmd_level(const char *cmd, int *rc)
         if (strlencmp(cmd, "level auto") == 0)
                 level = TP_EC_FAN_AUTO;
         else if ((strlencmp(cmd, "level disengaged") == 0) |
-                 (strlencmp(cmd, "level full-speed") == 0))
+                        (strlencmp(cmd, "level full-speed") == 0))
                 level = TP_EC_FAN_FULLSPEED;
         else if (sscanf(cmd, "level %d", &level) != 1)
                 return 0;
 
-        if ((*rc = fan_set_level_safe(level)) == -ENXIO)
-                printk(IBM_ERR "level command accepted for unsupported "
+        *rc = fan_set_level_safe(level);
+        if (*rc == -ENXIO)
+                printk(TPACPI_ERR "level command accepted for unsupported "
                        "access mode %d", fan_control_access_mode);
 
         return 1;
@@ -4402,8 +5448,9 @@ static int fan_write_cmd_enable(const char *cmd, int *rc)
         if (strlencmp(cmd, "enable") != 0)
                 return 0;
 
-        if ((*rc = fan_set_enable()) == -ENXIO)
-                printk(IBM_ERR "enable command accepted for unsupported "
+        *rc = fan_set_enable();
+        if (*rc == -ENXIO)
+                printk(TPACPI_ERR "enable command accepted for unsupported "
                        "access mode %d", fan_control_access_mode);
 
         return 1;
@@ -4414,8 +5461,9 @@ static int fan_write_cmd_disable(const char *cmd, int *rc)
         if (strlencmp(cmd, "disable") != 0)
                 return 0;
 
-        if ((*rc = fan_set_disable()) == -ENXIO)
-                printk(IBM_ERR "disable command accepted for unsupported "
+        *rc = fan_set_disable();
+        if (*rc == -ENXIO)
+                printk(TPACPI_ERR "disable command accepted for unsupported "
                        "access mode %d", fan_control_access_mode);
 
         return 1;
@@ -4431,8 +5479,9 @@ static int fan_write_cmd_speed(const char *cmd, int *rc)
         if (sscanf(cmd, "speed %d", &speed) != 1)
                 return 0;
 
-        if ((*rc = fan_set_speed(speed)) == -ENXIO)
-                printk(IBM_ERR "speed command accepted for unsupported "
+        *rc = fan_set_speed(speed);
+        if (*rc == -ENXIO)
+                printk(TPACPI_ERR "speed command accepted for unsupported "
                        "access mode %d", fan_control_access_mode);
 
         return 1;
@@ -4496,7 +5545,7 @@ static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
                            struct device_attribute *attr,
                            char *buf)
 {
-        return snprintf(buf, PAGE_SIZE, "%s\n", IBM_NAME);
+        return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
 }
 
 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
@@ -4507,14 +5556,12 @@ static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
 /* /proc support */
 static struct proc_dir_entry *proc_dir;
 
-/* Subdriver registry */
-static LIST_HEAD(tpacpi_all_drivers);
-
-
 /*
  * Module and infrastructure proble, init and exit handling
  */
 
+static int force_load;
+
 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
 static const char * __init str_supported(int is_supported)
 {
@@ -4524,6 +5571,48 @@ static const char * __init str_supported(int is_supported)
 }
 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
 
+static void ibm_exit(struct ibm_struct *ibm)
+{
+        dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
+
+        list_del_init(&ibm->all_drivers);
+
+        if (ibm->flags.acpi_notify_installed) {
+                dbg_printk(TPACPI_DBG_EXIT,
+                        "%s: acpi_remove_notify_handler\n", ibm->name);
+                BUG_ON(!ibm->acpi);
+                acpi_remove_notify_handler(*ibm->acpi->handle,
+                                           ibm->acpi->type,
+                                           dispatch_acpi_notify);
+                ibm->flags.acpi_notify_installed = 0;
+                ibm->flags.acpi_notify_installed = 0;
+        }
+
+        if (ibm->flags.proc_created) {
+                dbg_printk(TPACPI_DBG_EXIT,
+                        "%s: remove_proc_entry\n", ibm->name);
+                remove_proc_entry(ibm->name, proc_dir);
+                ibm->flags.proc_created = 0;
+        }
+
+        if (ibm->flags.acpi_driver_registered) {
+                dbg_printk(TPACPI_DBG_EXIT,
+                        "%s: acpi_bus_unregister_driver\n", ibm->name);
+                BUG_ON(!ibm->acpi);
+                acpi_bus_unregister_driver(ibm->acpi->driver);
+                kfree(ibm->acpi->driver);
+                ibm->acpi->driver = NULL;
+                ibm->flags.acpi_driver_registered = 0;
+        }
+
+        if (ibm->flags.init_called && ibm->exit) {
+                ibm->exit();
+                ibm->flags.init_called = 0;
+        }
+
+        dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
+}
+
 static int __init ibm_init(struct ibm_init_struct *iibm)
 {
         int ret;
@@ -4560,7 +5649,7 @@ static int __init ibm_init(struct ibm_init_struct *iibm)
                 if (ibm->acpi->notify) {
                         ret = setup_acpi_notify(ibm);
                         if (ret == -ENODEV) {
-                                printk(IBM_NOTICE "disabling subdriver %s\n",
+                                printk(TPACPI_NOTICE "disabling subdriver %s\n",
                                         ibm->name);
                                 ret = 0;
                                 goto err_out;
@@ -4578,7 +5667,7 @@ static int __init ibm_init(struct ibm_init_struct *iibm)
                                           S_IFREG | S_IRUGO | S_IWUSR,
                                           proc_dir);
                 if (!entry) {
-                        printk(IBM_ERR "unable to create proc entry %s\n",
+                        printk(TPACPI_ERR "unable to create proc entry %s\n",
                                ibm->name);
                         ret = -ENODEV;
                         goto err_out;
@@ -4604,48 +5693,6 @@ err_out:
         return (ret < 0)? ret : 0;
 }
 
-static void ibm_exit(struct ibm_struct *ibm)
-{
-        dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
-
-        list_del_init(&ibm->all_drivers);
-
-        if (ibm->flags.acpi_notify_installed) {
-                dbg_printk(TPACPI_DBG_EXIT,
-                        "%s: acpi_remove_notify_handler\n", ibm->name);
-                BUG_ON(!ibm->acpi);
-                acpi_remove_notify_handler(*ibm->acpi->handle,
-                                           ibm->acpi->type,
-                                           dispatch_acpi_notify);
-                ibm->flags.acpi_notify_installed = 0;
-                ibm->flags.acpi_notify_installed = 0;
-        }
-
-        if (ibm->flags.proc_created) {
-                dbg_printk(TPACPI_DBG_EXIT,
-                        "%s: remove_proc_entry\n", ibm->name);
-                remove_proc_entry(ibm->name, proc_dir);
-                ibm->flags.proc_created = 0;
-        }
-
-        if (ibm->flags.acpi_driver_registered) {
-                dbg_printk(TPACPI_DBG_EXIT,
-                        "%s: acpi_bus_unregister_driver\n", ibm->name);
-                BUG_ON(!ibm->acpi);
-                acpi_bus_unregister_driver(ibm->acpi->driver);
-                kfree(ibm->acpi->driver);
-                ibm->acpi->driver = NULL;
-                ibm->flags.acpi_driver_registered = 0;
-        }
-
-        if (ibm->flags.init_called && ibm->exit) {
-                ibm->exit();
-                ibm->flags.init_called = 0;
-        }
-
-        dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
-}
-
 /* Probing */
 
 static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp)
@@ -4715,10 +5762,10 @@ static int __init probe_for_thinkpad(void)
         is_thinkpad = (thinkpad_id.model_str != NULL);
 
         /* ec is required because many other handles are relative to it */
-        IBM_ACPIHANDLE_INIT(ec);
+        TPACPI_ACPIHANDLE_INIT(ec);
         if (!ec_handle) {
                 if (is_thinkpad)
-                        printk(IBM_ERR
+                        printk(TPACPI_ERR
                                 "Not yet supported ThinkPad detected!\n");
                 return -ENODEV;
         }
@@ -4839,47 +5886,110 @@ static int __init set_ibm_param(const char *val, struct kernel_param *kp)
         return -EINVAL;
 }
 
-static int experimental;
 module_param(experimental, int, 0);
+MODULE_PARM_DESC(experimental,
+                 "Enables experimental features when non-zero");
 
-static u32 dbg_level;
 module_param_named(debug, dbg_level, uint, 0);
+MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
 
-static int force_load;
 module_param(force_load, bool, 0);
+MODULE_PARM_DESC(force_load,
+                 "Attempts to load the driver even on a "
+                 "mis-identified ThinkPad when true");
 
-static int fan_control_allowed;
 module_param_named(fan_control, fan_control_allowed, bool, 0);
+MODULE_PARM_DESC(fan_control,
+                 "Enables setting fan parameters features when true");
 
-static int brightness_mode;
 module_param_named(brightness_mode, brightness_mode, int, 0);
+MODULE_PARM_DESC(brightness_mode,
+                 "Selects brightness control strategy: "
+                 "0=auto, 1=EC, 2=CMOS, 3=both");
 
-static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
 module_param(brightness_enable, uint, 0);
+MODULE_PARM_DESC(brightness_enable,
+                 "Enables backlight control when 1, disables when 0");
 
-static unsigned int hotkey_report_mode;
 module_param(hotkey_report_mode, uint, 0);
-
-#define IBM_PARAM(feature) \
-        module_param_call(feature, set_ibm_param, NULL, NULL, 0)
-
-IBM_PARAM(hotkey);
-IBM_PARAM(bluetooth);
-IBM_PARAM(video);
-IBM_PARAM(light);
+MODULE_PARM_DESC(hotkey_report_mode,
+                 "used for backwards compatibility with userspace, "
+                 "see documentation");
+
+#define TPACPI_PARAM(feature) \
+        module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
+        MODULE_PARM_DESC(feature, "Simulates thinkpad-aci procfs command " \
+                         "at module load, see documentation")
+
+TPACPI_PARAM(hotkey);
+TPACPI_PARAM(bluetooth);
+TPACPI_PARAM(video);
+TPACPI_PARAM(light);
 #ifdef CONFIG_THINKPAD_ACPI_DOCK
-IBM_PARAM(dock);
+TPACPI_PARAM(dock);
 #endif
 #ifdef CONFIG_THINKPAD_ACPI_BAY
-IBM_PARAM(bay);
+TPACPI_PARAM(bay);
 #endif /* CONFIG_THINKPAD_ACPI_BAY */
-IBM_PARAM(cmos);
-IBM_PARAM(led);
-IBM_PARAM(beep);
-IBM_PARAM(ecdump);
-IBM_PARAM(brightness);
-IBM_PARAM(volume);
-IBM_PARAM(fan);
+TPACPI_PARAM(cmos);
+TPACPI_PARAM(led);
+TPACPI_PARAM(beep);
+TPACPI_PARAM(ecdump);
+TPACPI_PARAM(brightness);
+TPACPI_PARAM(volume);
+TPACPI_PARAM(fan);
+
+static void thinkpad_acpi_module_exit(void)
+{
+        struct ibm_struct *ibm, *itmp;
+
+        tpacpi_lifecycle = TPACPI_LIFE_EXITING;
+
+        list_for_each_entry_safe_reverse(ibm, itmp,
+                                         &tpacpi_all_drivers,
+                                         all_drivers) {
+                ibm_exit(ibm);
+        }
+
+        dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
+
+        if (tpacpi_inputdev) {
+                if (tp_features.input_device_registered)
+                        input_unregister_device(tpacpi_inputdev);
+                else
+                        input_free_device(tpacpi_inputdev);
+        }
+
+        if (tpacpi_hwmon)
+                hwmon_device_unregister(tpacpi_hwmon);
+
+        if (tp_features.sensors_pdev_attrs_registered)
+                device_remove_file(&tpacpi_sensors_pdev->dev,
+                                   &dev_attr_thinkpad_acpi_pdev_name);
+        if (tpacpi_sensors_pdev)
+                platform_device_unregister(tpacpi_sensors_pdev);
+        if (tpacpi_pdev)
+                platform_device_unregister(tpacpi_pdev);
+
+        if (tp_features.sensors_pdrv_attrs_registered)
+                tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
+        if (tp_features.platform_drv_attrs_registered)
+                tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
+
+        if (tp_features.sensors_pdrv_registered)
+                platform_driver_unregister(&tpacpi_hwmon_pdriver);
+
+        if (tp_features.platform_drv_registered)
+                platform_driver_unregister(&tpacpi_pdriver);
+
+        if (proc_dir)
+                remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
+
+        kfree(thinkpad_id.bios_version_str);
+        kfree(thinkpad_id.ec_version_str);
+        kfree(thinkpad_id.model_str);
+}
+
 
 static int __init thinkpad_acpi_module_init(void)
 {
@@ -4902,12 +6012,13 @@ static int __init thinkpad_acpi_module_init(void)
 
         /* Driver initialization */
 
-        IBM_ACPIHANDLE_INIT(ecrd);
-        IBM_ACPIHANDLE_INIT(ecwr);
+        TPACPI_ACPIHANDLE_INIT(ecrd);
+        TPACPI_ACPIHANDLE_INIT(ecwr);
 
-        proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir);
+        proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
         if (!proc_dir) {
-                printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR);
+                printk(TPACPI_ERR
+                       "unable to create proc dir " TPACPI_PROC_DIR);
                 thinkpad_acpi_module_exit();
                 return -ENODEV;
         }
@@ -4915,7 +6026,8 @@ static int __init thinkpad_acpi_module_init(void)
 
         ret = platform_driver_register(&tpacpi_pdriver);
         if (ret) {
-                printk(IBM_ERR "unable to register main platform driver\n");
+                printk(TPACPI_ERR
+                       "unable to register main platform driver\n");
                 thinkpad_acpi_module_exit();
                 return ret;
         }
@@ -4923,7 +6035,8 @@ static int __init thinkpad_acpi_module_init(void)
 
         ret = platform_driver_register(&tpacpi_hwmon_pdriver);
         if (ret) {
-                printk(IBM_ERR "unable to register hwmon platform driver\n");
+                printk(TPACPI_ERR
+                       "unable to register hwmon platform driver\n");
                 thinkpad_acpi_module_exit();
                 return ret;
         }
@@ -4932,10 +6045,12 @@ static int __init thinkpad_acpi_module_init(void)
         ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
         if (!ret) {
                 tp_features.platform_drv_attrs_registered = 1;
-                ret = tpacpi_create_driver_attributes(&tpacpi_hwmon_pdriver.driver);
+                ret = tpacpi_create_driver_attributes(
+                                        &tpacpi_hwmon_pdriver.driver);
         }
         if (ret) {
-                printk(IBM_ERR "unable to create sysfs driver attributes\n");
+                printk(TPACPI_ERR
+                       "unable to create sysfs driver attributes\n");
                 thinkpad_acpi_module_exit();
                 return ret;
         }
@@ -4943,30 +6058,31 @@ static int __init thinkpad_acpi_module_init(void)
 
 
         /* Device initialization */
-        tpacpi_pdev = platform_device_register_simple(IBM_DRVR_NAME, -1,
+        tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
                                                         NULL, 0);
         if (IS_ERR(tpacpi_pdev)) {
                 ret = PTR_ERR(tpacpi_pdev);
                 tpacpi_pdev = NULL;
-                printk(IBM_ERR "unable to register platform device\n");
+                printk(TPACPI_ERR "unable to register platform device\n");
                 thinkpad_acpi_module_exit();
                 return ret;
         }
         tpacpi_sensors_pdev = platform_device_register_simple(
-                                                        IBM_HWMON_DRVR_NAME,
-                                                        -1, NULL, 0);
+                                                TPACPI_HWMON_DRVR_NAME,
+                                                -1, NULL, 0);
         if (IS_ERR(tpacpi_sensors_pdev)) {
                 ret = PTR_ERR(tpacpi_sensors_pdev);
                 tpacpi_sensors_pdev = NULL;
-                printk(IBM_ERR "unable to register hwmon platform device\n");
+                printk(TPACPI_ERR
+                       "unable to register hwmon platform device\n");
                 thinkpad_acpi_module_exit();
                 return ret;
         }
         ret = device_create_file(&tpacpi_sensors_pdev->dev,
                                  &dev_attr_thinkpad_acpi_pdev_name);
         if (ret) {
-                printk(IBM_ERR
-                        "unable to create sysfs hwmon device attributes\n");
+                printk(TPACPI_ERR
+                       "unable to create sysfs hwmon device attributes\n");
                 thinkpad_acpi_module_exit();
                 return ret;
         }
@@ -4975,20 +6091,20 @@ static int __init thinkpad_acpi_module_init(void)
         if (IS_ERR(tpacpi_hwmon)) {
                 ret = PTR_ERR(tpacpi_hwmon);
                 tpacpi_hwmon = NULL;
-                printk(IBM_ERR "unable to register hwmon device\n");
+                printk(TPACPI_ERR "unable to register hwmon device\n");
                 thinkpad_acpi_module_exit();
                 return ret;
         }
         mutex_init(&tpacpi_inputdev_send_mutex);
         tpacpi_inputdev = input_allocate_device();
         if (!tpacpi_inputdev) {
-                printk(IBM_ERR "unable to allocate input device\n");
+                printk(TPACPI_ERR "unable to allocate input device\n");
                 thinkpad_acpi_module_exit();
                 return -ENOMEM;
         } else {
                 /* Prepare input device, but don't register */
                 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
-                tpacpi_inputdev->phys = IBM_DRVR_NAME "/input0";
+                tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
                 tpacpi_inputdev->id.bustype = BUS_HOST;
                 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
                                                 thinkpad_id.vendor :
@@ -5007,7 +6123,7 @@ static int __init thinkpad_acpi_module_init(void)
         }
         ret = input_register_device(tpacpi_inputdev);
         if (ret < 0) {
-                printk(IBM_ERR "unable to register input device\n");
+                printk(TPACPI_ERR "unable to register input device\n");
                 thinkpad_acpi_module_exit();
                 return ret;
         } else {
@@ -5018,56 +6134,36 @@ static int __init thinkpad_acpi_module_init(void)
         return 0;
 }
 
-static void thinkpad_acpi_module_exit(void)
-{
-        struct ibm_struct *ibm, *itmp;
-
-        tpacpi_lifecycle = TPACPI_LIFE_EXITING;
-
-        list_for_each_entry_safe_reverse(ibm, itmp,
-                                         &tpacpi_all_drivers,
-                                         all_drivers) {
-                ibm_exit(ibm);
-        }
-
-        dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
-
-        if (tpacpi_inputdev) {
-                if (tp_features.input_device_registered)
-                        input_unregister_device(tpacpi_inputdev);
-                else
-                        input_free_device(tpacpi_inputdev);
-        }
-
-        if (tpacpi_hwmon)
-                hwmon_device_unregister(tpacpi_hwmon);
-
-        if (tp_features.sensors_pdev_attrs_registered)
-                device_remove_file(&tpacpi_sensors_pdev->dev,
-                                   &dev_attr_thinkpad_acpi_pdev_name);
-        if (tpacpi_sensors_pdev)
-                platform_device_unregister(tpacpi_sensors_pdev);
-        if (tpacpi_pdev)
-                platform_device_unregister(tpacpi_pdev);
-
-        if (tp_features.sensors_pdrv_attrs_registered)
-                tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
-        if (tp_features.platform_drv_attrs_registered)
-                tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
+/* Please remove this in year 2009 */
+MODULE_ALIAS("ibm_acpi");
 
-        if (tp_features.sensors_pdrv_registered)
-                platform_driver_unregister(&tpacpi_hwmon_pdriver);
+/*
+ * DMI matching for module autoloading
+ *
+ * See http://thinkwiki.org/wiki/List_of_DMI_IDs
+ * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
+ *
+ * Only models listed in thinkwiki will be supported, so add yours
+ * if it is not there yet.
+ */
+#define IBM_BIOS_MODULE_ALIAS(__type) \
+        MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW")
 
-        if (tp_features.platform_drv_registered)
-                platform_driver_unregister(&tpacpi_pdriver);
+/* Non-ancient thinkpads */
+MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
+MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
 
-        if (proc_dir)
-                remove_proc_entry(IBM_PROC_DIR, acpi_root_dir);
+/* Ancient thinkpad BIOSes have to be identified by
+ * BIOS type or model number, and there are far less
+ * BIOS types than model numbers... */
+IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]");
+IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]");
+IBM_BIOS_MODULE_ALIAS("K[U,X-Z]");
 
-        kfree(thinkpad_id.bios_version_str);
-        kfree(thinkpad_id.ec_version_str);
-        kfree(thinkpad_id.model_str);
-}
+MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
+MODULE_DESCRIPTION(TPACPI_DESC);
+MODULE_VERSION(TPACPI_VERSION);
+MODULE_LICENSE("GPL");
 
 module_init(thinkpad_acpi_module_init);
 module_exit(thinkpad_acpi_module_exit);
diff --git a/drivers/misc/thinkpad_acpi.h b/drivers/misc/thinkpad_acpi.h
deleted file mode 100644
index 8fba2bbe345e..000000000000
--- a/drivers/misc/thinkpad_acpi.h
+++ /dev/null
@@ -1,606 +0,0 @@
-/*
- *  thinkpad_acpi.h - ThinkPad ACPI Extras
- *
- *
- *  Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
- *  Copyright (C) 2006-2007 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- *  02110-1301, USA.
- */
-
-#ifndef __THINKPAD_ACPI_H__
-#define __THINKPAD_ACPI_H__
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/list.h>
-#include <linux/mutex.h>
-
-#include <linux/nvram.h>
-#include <linux/proc_fs.h>
-#include <linux/sysfs.h>
-#include <linux/backlight.h>
-#include <linux/fb.h>
-#include <linux/platform_device.h>
-#include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
-#include <linux/input.h>
-#include <asm/uaccess.h>
-
-#include <linux/dmi.h>
-#include <linux/jiffies.h>
-#include <linux/workqueue.h>
-
-#include <acpi/acpi_drivers.h>
-#include <acpi/acnamesp.h>
-
-#include <linux/pci_ids.h>
-
-/****************************************************************************
- * Main driver
- */
-
-#define IBM_NAME "thinkpad"
-#define IBM_DESC "ThinkPad ACPI Extras"
-#define IBM_FILE IBM_NAME "_acpi"
-#define IBM_URL "http://ibm-acpi.sf.net/"
-#define IBM_MAIL "ibm-acpi-devel@lists.sourceforge.net"
-
-#define IBM_PROC_DIR "ibm"
-#define IBM_ACPI_EVENT_PREFIX "ibm"
-#define IBM_DRVR_NAME IBM_FILE
-#define IBM_HWMON_DRVR_NAME IBM_NAME "_hwmon"
-
-#define IBM_LOG IBM_FILE ": "
-#define IBM_ERR    KERN_ERR    IBM_LOG
-#define IBM_NOTICE KERN_NOTICE IBM_LOG
-#define IBM_INFO   KERN_INFO   IBM_LOG
-#define IBM_DEBUG  KERN_DEBUG  IBM_LOG
-
-#define IBM_MAX_ACPI_ARGS 3
-
-/* ThinkPad CMOS commands */
-#define TP_CMOS_VOLUME_DOWN     0
-#define TP_CMOS_VOLUME_UP       1
-#define TP_CMOS_VOLUME_MUTE     2
-#define TP_CMOS_BRIGHTNESS_UP   4
-#define TP_CMOS_BRIGHTNESS_DOWN 5
-
-/* ThinkPad CMOS NVRAM constants */
-#define TP_NVRAM_ADDR_BRIGHTNESS       0x5e
-#define TP_NVRAM_MASK_LEVEL_BRIGHTNESS 0x0f
-#define TP_NVRAM_POS_LEVEL_BRIGHTNESS 0
-
-#define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off")
-#define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
-#define strlencmp(a,b) (strncmp((a), (b), strlen(b)))
-
-/* Debugging */
-#define TPACPI_DBG_ALL          0xffff
-#define TPACPI_DBG_ALL          0xffff
-#define TPACPI_DBG_INIT         0x0001
-#define TPACPI_DBG_EXIT         0x0002
-#define dbg_printk(a_dbg_level, format, arg...) \
-        do { if (dbg_level & a_dbg_level) \
-                printk(IBM_DEBUG "%s: " format, __func__ , ## arg); } while (0)
-#ifdef CONFIG_THINKPAD_ACPI_DEBUG
-#define vdbg_printk(a_dbg_level, format, arg...) \
-        dbg_printk(a_dbg_level, format, ## arg)
-static const char *str_supported(int is_supported);
-#else
-#define vdbg_printk(a_dbg_level, format, arg...)
-#endif
-
-/* Input IDs */
-#define TPACPI_HKEY_INPUT_VENDOR        PCI_VENDOR_ID_IBM
-#define TPACPI_HKEY_INPUT_PRODUCT       0x5054 /* "TP" */
-#define TPACPI_HKEY_INPUT_VERSION       0x4101
-
-/* ACPI HIDs */
-#define IBM_HKEY_HID    "IBM0068"
-
-/* ACPI helpers */
-static int __must_check acpi_evalf(acpi_handle handle,
-                      void *res, char *method, char *fmt, ...);
-static int __must_check acpi_ec_read(int i, u8 * p);
-static int __must_check acpi_ec_write(int i, u8 v);
-static int __must_check _sta(acpi_handle handle);
-
-/* ACPI handles */
-static acpi_handle root_handle;                 /* root namespace */
-static acpi_handle ec_handle;                   /* EC */
-static acpi_handle ecrd_handle, ecwr_handle;    /* 570 EC access */
-static acpi_handle cmos_handle, hkey_handle;    /* basic thinkpad handles */
-
-static void drv_acpi_handle_init(char *name,
-                   acpi_handle *handle, acpi_handle parent,
-                   char **paths, int num_paths, char **path);
-#define IBM_ACPIHANDLE_INIT(object)                                             \
-        drv_acpi_handle_init(#object, &object##_handle, *object##_parent,       \
-                object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
-
-/* ThinkPad ACPI helpers */
-static int issue_thinkpad_cmos_command(int cmos_cmd);
-
-/* procfs support */
-static struct proc_dir_entry *proc_dir;
-
-/* procfs helpers */
-static int dispatch_procfs_read(char *page, char **start, off_t off,
-                int count, int *eof, void *data);
-static int dispatch_procfs_write(struct file *file,
-                const char __user * userbuf,
-                unsigned long count, void *data);
-static char *next_cmd(char **cmds);
-
-/* sysfs support */
-struct attribute_set {
-        unsigned int members, max_members;
-        struct attribute_group group;
-};
-
-static struct attribute_set *create_attr_set(unsigned int max_members,
-                                                const char* name);
-#define destroy_attr_set(_set) \
-        kfree(_set);
-static int add_to_attr_set(struct attribute_set* s, struct attribute *attr);
-static int add_many_to_attr_set(struct attribute_set* s,
-                        struct attribute **attr,
-                        unsigned int count);
-#define register_attr_set_with_sysfs(_attr_set, _kobj) \
-        sysfs_create_group(_kobj, &_attr_set->group)
-static void delete_attr_set(struct attribute_set* s, struct kobject *kobj);
-
-static int parse_strtoul(const char *buf, unsigned long max,
-                        unsigned long *value);
-
-/* Device model */
-static struct platform_device *tpacpi_pdev;
-static struct platform_device *tpacpi_sensors_pdev;
-static struct device *tpacpi_hwmon;
-static struct platform_driver tpacpi_pdriver;
-static struct input_dev *tpacpi_inputdev;
-static int tpacpi_create_driver_attributes(struct device_driver *drv);
-static void tpacpi_remove_driver_attributes(struct device_driver *drv);
-
-/* Module */
-static int experimental;
-static u32 dbg_level;
-static int force_load;
-static unsigned int hotkey_report_mode;
-
-static int thinkpad_acpi_module_init(void);
-static void thinkpad_acpi_module_exit(void);
-
-
-/****************************************************************************
- * Subdrivers
- */
-
-struct ibm_struct;
-
-struct tp_acpi_drv_struct {
-        const struct acpi_device_id *hid;
-        struct acpi_driver *driver;
-
-        void (*notify) (struct ibm_struct *, u32);
-        acpi_handle *handle;
-        u32 type;
-        struct acpi_device *device;
-};
-
-struct ibm_struct {
-        char *name;
-
-        int (*read) (char *);
-        int (*write) (char *);
-        void (*exit) (void);
-        void (*resume) (void);
-
-        struct list_head all_drivers;
-
-        struct tp_acpi_drv_struct *acpi;
-
-        struct {
-                u8 acpi_driver_registered:1;
-                u8 acpi_notify_installed:1;
-                u8 proc_created:1;
-                u8 init_called:1;
-                u8 experimental:1;
-        } flags;
-};
-
-struct ibm_init_struct {
-        char param[32];
-
-        int (*init) (struct ibm_init_struct *);
-        struct ibm_struct *data;
-};
-
-static struct {
-#ifdef CONFIG_THINKPAD_ACPI_BAY
-        u32 bay_status:1;
-        u32 bay_eject:1;
-        u32 bay_status2:1;
-        u32 bay_eject2:1;
-#endif
-        u32 bluetooth:1;
-        u32 hotkey:1;
-        u32 hotkey_mask:1;
-        u32 hotkey_wlsw:1;
-        u32 light:1;
-        u32 light_status:1;
-        u32 bright_16levels:1;
-        u32 wan:1;
-        u32 fan_ctrl_status_undef:1;
-        u32 input_device_registered:1;
-        u32 platform_drv_registered:1;
-        u32 platform_drv_attrs_registered:1;
-        u32 sensors_pdrv_registered:1;
-        u32 sensors_pdrv_attrs_registered:1;
-        u32 sensors_pdev_attrs_registered:1;
-} tp_features;
-
-struct thinkpad_id_data {
-        unsigned int vendor;    /* ThinkPad vendor:
-                                 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
-
-        char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
-        char *ec_version_str;   /* Something like 1ZHT51WW-1.04a */
-
-        u16 bios_model;         /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
-        u16 ec_model;
-
-        char *model_str;
-};
-
-static struct thinkpad_id_data thinkpad_id;
-
-static struct list_head tpacpi_all_drivers;
-
-static struct ibm_init_struct ibms_init[];
-static int set_ibm_param(const char *val, struct kernel_param *kp);
-static int ibm_init(struct ibm_init_struct *iibm);
-static void ibm_exit(struct ibm_struct *ibm);
-
-
-/*
- * procfs master subdriver
- */
-static int thinkpad_acpi_driver_init(struct ibm_init_struct *iibm);
-static int thinkpad_acpi_driver_read(char *p);
-
-
-/*
- * Bay subdriver
- */
-
-#ifdef CONFIG_THINKPAD_ACPI_BAY
-static acpi_handle bay_handle, bay_ej_handle;
-static acpi_handle bay2_handle, bay2_ej_handle;
-
-static int bay_init(struct ibm_init_struct *iibm);
-static void bay_notify(struct ibm_struct *ibm, u32 event);
-static int bay_read(char *p);
-static int bay_write(char *buf);
-#endif /* CONFIG_THINKPAD_ACPI_BAY */
-
-
-/*
- * Beep subdriver
- */
-
-static acpi_handle beep_handle;
-
-static int beep_read(char *p);
-static int beep_write(char *buf);
-
-
-/*
- * Bluetooth subdriver
- */
-
-enum {
-        /* ACPI GBDC/SBDC bits */
-        TP_ACPI_BLUETOOTH_HWPRESENT     = 0x01, /* Bluetooth hw available */
-        TP_ACPI_BLUETOOTH_RADIOSSW      = 0x02, /* Bluetooth radio enabled */
-        TP_ACPI_BLUETOOTH_UNK           = 0x04, /* unknown function */
-};
-
-static int bluetooth_init(struct ibm_init_struct *iibm);
-static int bluetooth_get_radiosw(void);
-static int bluetooth_set_radiosw(int radio_on);
-static int bluetooth_read(char *p);
-static int bluetooth_write(char *buf);
-
-
-/*
- * Brightness (backlight) subdriver
- */
-
-#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
-
-static struct backlight_device *ibm_backlight_device;
-static int brightness_offset = 0x31;
-static int brightness_mode;
-static unsigned int brightness_enable;  /* 0 = no, 1 = yes, 2 = auto */
-
-static int brightness_init(struct ibm_init_struct *iibm);
-static void brightness_exit(void);
-static int brightness_get(struct backlight_device *bd);
-static int brightness_set(int value);
-static int brightness_update_status(struct backlight_device *bd);
-static int brightness_read(char *p);
-static int brightness_write(char *buf);
-
-
-/*
- * CMOS subdriver
- */
-
-static int cmos_read(char *p);
-static int cmos_write(char *buf);
-
-
-/*
- * Dock subdriver
- */
-
-#ifdef CONFIG_THINKPAD_ACPI_DOCK
-static acpi_handle pci_handle;
-static acpi_handle dock_handle;
-
-static void dock_notify(struct ibm_struct *ibm, u32 event);
-static int dock_read(char *p);
-static int dock_write(char *buf);
-#endif /* CONFIG_THINKPAD_ACPI_DOCK */
-
-
-/*
- * EC dump subdriver
- */
-
-static int ecdump_read(char *p) ;
-static int ecdump_write(char *buf);
-
-
-/*
- * Fan subdriver
- */
-
-enum {                                  /* Fan control constants */
-        fan_status_offset = 0x2f,       /* EC register 0x2f */
-        fan_rpm_offset = 0x84,          /* EC register 0x84: LSB, 0x85 MSB (RPM)
-                                         * 0x84 must be read before 0x85 */
-
-        TP_EC_FAN_FULLSPEED = 0x40,     /* EC fan mode: full speed */
-        TP_EC_FAN_AUTO      = 0x80,     /* EC fan mode: auto fan control */
-
-        TPACPI_FAN_LAST_LEVEL = 0x100,  /* Use cached last-seen fan level */
-};
-
-enum fan_status_access_mode {
-        TPACPI_FAN_NONE = 0,            /* No fan status or control */
-        TPACPI_FAN_RD_ACPI_GFAN,        /* Use ACPI GFAN */
-        TPACPI_FAN_RD_TPEC,             /* Use ACPI EC regs 0x2f, 0x84-0x85 */
-};
-
-enum fan_control_access_mode {
-        TPACPI_FAN_WR_NONE = 0,         /* No fan control */
-        TPACPI_FAN_WR_ACPI_SFAN,        /* Use ACPI SFAN */
-        TPACPI_FAN_WR_TPEC,             /* Use ACPI EC reg 0x2f */
-        TPACPI_FAN_WR_ACPI_FANS,        /* Use ACPI FANS and EC reg 0x2f */
-};
-
-enum fan_control_commands {
-        TPACPI_FAN_CMD_SPEED    = 0x0001,       /* speed command */
-        TPACPI_FAN_CMD_LEVEL    = 0x0002,       /* level command  */
-        TPACPI_FAN_CMD_ENABLE   = 0x0004,       /* enable/disable cmd,
-                                                 * and also watchdog cmd */
-};
-
-static int fan_control_allowed;
-
-static enum fan_status_access_mode fan_status_access_mode;
-static enum fan_control_access_mode fan_control_access_mode;
-static enum fan_control_commands fan_control_commands;
-static u8 fan_control_initial_status;
-static u8 fan_control_desired_level;
-static int fan_watchdog_maxinterval;
-
-static struct mutex fan_mutex;
-
-static acpi_handle fans_handle, gfan_handle, sfan_handle;
-
-static int fan_init(struct ibm_init_struct *iibm);
-static void fan_exit(void);
-static int fan_get_status(u8 *status);
-static int fan_get_status_safe(u8 *status);
-static int fan_get_speed(unsigned int *speed);
-static void fan_update_desired_level(u8 status);
-static void fan_watchdog_fire(struct work_struct *ignored);
-static void fan_watchdog_reset(void);
-static int fan_set_level(int level);
-static int fan_set_level_safe(int level);
-static int fan_set_enable(void);
-static int fan_set_disable(void);
-static int fan_set_speed(int speed);
-static int fan_read(char *p);
-static int fan_write(char *buf);
-static int fan_write_cmd_level(const char *cmd, int *rc);
-static int fan_write_cmd_enable(const char *cmd, int *rc);
-static int fan_write_cmd_disable(const char *cmd, int *rc);
-static int fan_write_cmd_speed(const char *cmd, int *rc);
-static int fan_write_cmd_watchdog(const char *cmd, int *rc);
-
-
-/*
- * Hotkey subdriver
- */
-
-static int hotkey_orig_status;
-static u32 hotkey_orig_mask;
-
-static struct mutex hotkey_mutex;
-
-static int hotkey_init(struct ibm_init_struct *iibm);
-static void hotkey_exit(void);
-static int hotkey_get(int *status, u32 *mask);
-static int hotkey_set(int status, u32 mask);
-static void hotkey_notify(struct ibm_struct *ibm, u32 event);
-static int hotkey_read(char *p);
-static int hotkey_write(char *buf);
-
-
-/*
- * LED subdriver
- */
-
-enum led_access_mode {
-        TPACPI_LED_NONE = 0,
-        TPACPI_LED_570, /* 570 */
-        TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
-        TPACPI_LED_NEW, /* all others */
-};
-
-enum {  /* For TPACPI_LED_OLD */
-        TPACPI_LED_EC_HLCL = 0x0c,      /* EC reg to get led to power on */
-        TPACPI_LED_EC_HLBL = 0x0d,      /* EC reg to blink a lit led */
-        TPACPI_LED_EC_HLMS = 0x0e,      /* EC reg to select led to command */
-};
-
-static enum led_access_mode led_supported;
-static acpi_handle led_handle;
-
-static int led_init(struct ibm_init_struct *iibm);
-static int led_read(char *p);
-static int led_write(char *buf);
-
-/*
- * Light (thinklight) subdriver
- */
-
-static acpi_handle lght_handle, ledb_handle;
-
-static int light_init(struct ibm_init_struct *iibm);
-static int light_read(char *p);
-static int light_write(char *buf);
-
-
-/*
- * Thermal subdriver
- */
-
-enum thermal_access_mode {
-        TPACPI_THERMAL_NONE = 0,        /* No thermal support */
-        TPACPI_THERMAL_ACPI_TMP07,      /* Use ACPI TMP0-7 */
-        TPACPI_THERMAL_ACPI_UPDT,       /* Use ACPI TMP0-7 with UPDT */
-        TPACPI_THERMAL_TPEC_8,          /* Use ACPI EC regs, 8 sensors */
-        TPACPI_THERMAL_TPEC_16,         /* Use ACPI EC regs, 16 sensors */
-};
-
-enum { /* TPACPI_THERMAL_TPEC_* */
-        TP_EC_THERMAL_TMP0 = 0x78,      /* ACPI EC regs TMP 0..7 */
-        TP_EC_THERMAL_TMP8 = 0xC0,      /* ACPI EC regs TMP 8..15 */
-        TP_EC_THERMAL_TMP_NA = -128,    /* ACPI EC sensor not available */
-};
-
-#define TPACPI_MAX_THERMAL_SENSORS 16   /* Max thermal sensors supported */
-struct ibm_thermal_sensors_struct {
-        s32 temp[TPACPI_MAX_THERMAL_SENSORS];
-};
-
-static enum thermal_access_mode thermal_read_mode;
-
-static int thermal_init(struct ibm_init_struct *iibm);
-static int thermal_get_sensor(int idx, s32 *value);
-static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s);
-static int thermal_read(char *p);
-
-
-/*
- * Video subdriver
- */
-
-enum video_access_mode {
-        TPACPI_VIDEO_NONE = 0,
-        TPACPI_VIDEO_570,       /* 570 */
-        TPACPI_VIDEO_770,       /* 600e/x, 770e, 770x */
-        TPACPI_VIDEO_NEW,       /* all others */
-};
-
-enum {  /* video status flags, based on VIDEO_570 */
-        TP_ACPI_VIDEO_S_LCD = 0x01,     /* LCD output enabled */
-        TP_ACPI_VIDEO_S_CRT = 0x02,     /* CRT output enabled */
-        TP_ACPI_VIDEO_S_DVI = 0x08,     /* DVI output enabled */
-};
-
-enum {  /* TPACPI_VIDEO_570 constants */
-        TP_ACPI_VIDEO_570_PHSCMD = 0x87,        /* unknown magic constant :( */
-        TP_ACPI_VIDEO_570_PHSMASK = 0x03,       /* PHS bits that map to
-                                                 * video_status_flags */
-        TP_ACPI_VIDEO_570_PHS2CMD = 0x8b,       /* unknown magic constant :( */
-        TP_ACPI_VIDEO_570_PHS2SET = 0x80,       /* unknown magic constant :( */
-};
-
-static enum video_access_mode video_supported;
-static int video_orig_autosw;
-static acpi_handle vid_handle, vid2_handle;
-
-static int video_init(struct ibm_init_struct *iibm);
-static void video_exit(void);
-static int video_outputsw_get(void);
-static int video_outputsw_set(int status);
-static int video_autosw_get(void);
-static int video_autosw_set(int enable);
-static int video_outputsw_cycle(void);
-static int video_expand_toggle(void);
-static int video_read(char *p);
-static int video_write(char *buf);
-
-
-/*
- * Volume subdriver
- */
-
-static int volume_offset = 0x30;
-
-static int volume_read(char *p);
-static int volume_write(char *buf);
-
-
-/*
- * Wan subdriver
- */
-
-enum {
-        /* ACPI GWAN/SWAN bits */
-        TP_ACPI_WANCARD_HWPRESENT       = 0x01, /* Wan hw available */
-        TP_ACPI_WANCARD_RADIOSSW        = 0x02, /* Wan radio enabled */
-        TP_ACPI_WANCARD_UNK             = 0x04, /* unknown function */
-};
-
-static int wan_init(struct ibm_init_struct *iibm);
-static int wan_get_radiosw(void);
-static int wan_set_radiosw(int radio_on);
-static int wan_read(char *p);
-static int wan_write(char *buf);
-
-
-#endif /* __THINKPAD_ACPI_H */
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index dada89906314..662b4c279cfc 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -183,7 +183,7 @@ static int __init pnpacpi_add_device(struct acpi_device *device)
         if (ACPI_SUCCESS(status))
                 dev->capabilities |= PNP_CONFIGURABLE;
         dev->capabilities |= PNP_READ;
-        if (device->flags.dynamic_status)
+        if (device->flags.dynamic_status && (dev->capabilities & PNP_CONFIGURABLE))
                 dev->capabilities |= PNP_WRITE;
         if (device->flags.removable)
                 dev->capabilities |= PNP_REMOVABLE;
diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c
index 13399d133b94..c444d6b10c58 100644
--- a/drivers/power/power_supply_sysfs.c
+++ b/drivers/power/power_supply_sysfs.c
@@ -115,6 +115,7 @@ static struct device_attribute power_supply_attrs[] = {
         /* Properties of type `const char *' */
         POWER_SUPPLY_ATTR(model_name),
         POWER_SUPPLY_ATTR(manufacturer),
+        POWER_SUPPLY_ATTR(serial_number),
 };
 
 static ssize_t power_supply_show_static_attrs(struct device *dev,
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
new file mode 100644
index 000000000000..9b3f61200000
--- /dev/null
+++ b/drivers/thermal/Kconfig
@@ -0,0 +1,15 @@
+#
+# Generic thermal sysfs drivers configuration
+#
+
+menuconfig THERMAL
+        bool "Generic Thermal sysfs driver"
+        default y
+        help
+          Generic Thermal Sysfs driver offers a generic mechanism for
+          thermal management. Usually it's made up of one or more thermal
+          zone and cooling device.
+          each thermal zone contains its own temperature, trip points,
+          cooling devices.
+          All platforms with ACPI thermal support can use this driver.
+          If you want this support, you should say Y here
diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
new file mode 100644
index 000000000000..8ef1232de376
--- /dev/null
+++ b/drivers/thermal/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for sensor chip drivers.
+#
+
+obj-$(CONFIG_THERMAL)           += thermal.o
diff --git a/drivers/thermal/thermal.c b/drivers/thermal/thermal.c
new file mode 100644
index 000000000000..3273e348fd14
--- /dev/null
+++ b/drivers/thermal/thermal.c
@@ -0,0 +1,714 @@
+/*
+ *  thermal.c - Generic Thermal Management Sysfs support.
+ *
+ *  Copyright (C) 2008 Intel Corp
+ *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
+ *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
+ *
+ *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful, but
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/kdev_t.h>
+#include <linux/idr.h>
+#include <linux/thermal.h>
+#include <linux/spinlock.h>
+
+MODULE_AUTHOR("Zhang Rui")
+MODULE_DESCRIPTION("Generic thermal management sysfs support");
+MODULE_LICENSE("GPL");
+
+#define PREFIX "Thermal: "
+
+struct thermal_cooling_device_instance {
+        int id;
+        char name[THERMAL_NAME_LENGTH];
+        struct thermal_zone_device *tz;
+        struct thermal_cooling_device *cdev;
+        int trip;
+        char attr_name[THERMAL_NAME_LENGTH];
+        struct device_attribute attr;
+        struct list_head node;
+};
+
+static DEFINE_IDR(thermal_tz_idr);
+static DEFINE_IDR(thermal_cdev_idr);
+static DEFINE_MUTEX(thermal_idr_lock);
+
+static LIST_HEAD(thermal_tz_list);
+static LIST_HEAD(thermal_cdev_list);
+static DEFINE_MUTEX(thermal_list_lock);
+
+static int get_idr(struct idr *idr, struct mutex *lock, int *id)
+{
+        int err;
+
+      again:
+        if (unlikely(idr_pre_get(idr, GFP_KERNEL) == 0))
+                return -ENOMEM;
+
+        if (lock)
+                mutex_lock(lock);
+        err = idr_get_new(idr, NULL, id);
+        if (lock)
+                mutex_unlock(lock);
+        if (unlikely(err == -EAGAIN))
+                goto again;
+        else if (unlikely(err))
+                return err;
+
+        *id = *id & MAX_ID_MASK;
+        return 0;
+}
+
+static void release_idr(struct idr *idr, struct mutex *lock, int id)
+{
+        if (lock)
+                mutex_lock(lock);
+        idr_remove(idr, id);
+        if (lock)
+                mutex_unlock(lock);
+}
+
+/* sys I/F for thermal zone */
+
+#define to_thermal_zone(_dev) \
+        container_of(_dev, struct thermal_zone_device, device)
+
+static ssize_t
+type_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct thermal_zone_device *tz = to_thermal_zone(dev);
+
+        return sprintf(buf, "%s\n", tz->type);
+}
+
+static ssize_t
+temp_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct thermal_zone_device *tz = to_thermal_zone(dev);
+
+        if (!tz->ops->get_temp)
+                return -EPERM;
+
+        return tz->ops->get_temp(tz, buf);
+}
+
+static ssize_t
+mode_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct thermal_zone_device *tz = to_thermal_zone(dev);
+
+        if (!tz->ops->get_mode)
+                return -EPERM;
+
+        return tz->ops->get_mode(tz, buf);
+}
+
+static ssize_t
+mode_store(struct device *dev, struct device_attribute *attr,
+           const char *buf, size_t count)
+{
+        struct thermal_zone_device *tz = to_thermal_zone(dev);
+        int result;
+
+        if (!tz->ops->set_mode)
+                return -EPERM;
+
+        result = tz->ops->set_mode(tz, buf);
+        if (result)
+                return result;
+
+        return count;
+}
+
+static ssize_t
+trip_point_type_show(struct device *dev, struct device_attribute *attr,
+                     char *buf)
+{
+        struct thermal_zone_device *tz = to_thermal_zone(dev);
+        int trip;
+
+        if (!tz->ops->get_trip_type)
+                return -EPERM;
+
+        if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
+                return -EINVAL;
+
+        return tz->ops->get_trip_type(tz, trip, buf);
+}
+
+static ssize_t
+trip_point_temp_show(struct device *dev, struct device_attribute *attr,
+                     char *buf)
+{
+        struct thermal_zone_device *tz = to_thermal_zone(dev);
+        int trip;
+
+        if (!tz->ops->get_trip_temp)
+                return -EPERM;
+
+        if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
+                return -EINVAL;
+
+        return tz->ops->get_trip_temp(tz, trip, buf);
+}
+
+static DEVICE_ATTR(type, 0444, type_show, NULL);
+static DEVICE_ATTR(temp, 0444, temp_show, NULL);
+static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
+
+static struct device_attribute trip_point_attrs[] = {
+        __ATTR(trip_point_0_type, 0444, trip_point_type_show, NULL),
+        __ATTR(trip_point_0_temp, 0444, trip_point_temp_show, NULL),
+        __ATTR(trip_point_1_type, 0444, trip_point_type_show, NULL),
+        __ATTR(trip_point_1_temp, 0444, trip_point_temp_show, NULL),
+        __ATTR(trip_point_2_type, 0444, trip_point_type_show, NULL),
+        __ATTR(trip_point_2_temp, 0444, trip_point_temp_show, NULL),
+        __ATTR(trip_point_3_type, 0444, trip_point_type_show, NULL),
+        __ATTR(trip_point_3_temp, 0444, trip_point_temp_show, NULL),
+        __ATTR(trip_point_4_type, 0444, trip_point_type_show, NULL),
+        __ATTR(trip_point_4_temp, 0444, trip_point_temp_show, NULL),
+        __ATTR(trip_point_5_type, 0444, trip_point_type_show, NULL),
+        __ATTR(trip_point_5_temp, 0444, trip_point_temp_show, NULL),
+        __ATTR(trip_point_6_type, 0444, trip_point_type_show, NULL),
+        __ATTR(trip_point_6_temp, 0444, trip_point_temp_show, NULL),
+        __ATTR(trip_point_7_type, 0444, trip_point_type_show, NULL),
+        __ATTR(trip_point_7_temp, 0444, trip_point_temp_show, NULL),
+        __ATTR(trip_point_8_type, 0444, trip_point_type_show, NULL),
+        __ATTR(trip_point_8_temp, 0444, trip_point_temp_show, NULL),
+        __ATTR(trip_point_9_type, 0444, trip_point_type_show, NULL),
+        __ATTR(trip_point_9_temp, 0444, trip_point_temp_show, NULL),
+};
+
+#define TRIP_POINT_ATTR_ADD(_dev, _index, result)     \
+do {    \
+        result = device_create_file(_dev,       \
+                                &trip_point_attrs[_index * 2]); \
+        if (result)     \
+                break;  \
+        result = device_create_file(_dev,       \
+                        &trip_point_attrs[_index * 2 + 1]);     \
+} while (0)
+
+#define TRIP_POINT_ATTR_REMOVE(_dev, _index)    \
+do {    \
+        device_remove_file(_dev, &trip_point_attrs[_index * 2]);        \
+        device_remove_file(_dev, &trip_point_attrs[_index * 2 + 1]);    \
+} while (0)
+
+/* sys I/F for cooling device */
+#define to_cooling_device(_dev) \
+        container_of(_dev, struct thermal_cooling_device, device)
+
+static ssize_t
+thermal_cooling_device_type_show(struct device *dev,
+                                 struct device_attribute *attr, char *buf)
+{
+        struct thermal_cooling_device *cdev = to_cooling_device(dev);
+
+        return sprintf(buf, "%s\n", cdev->type);
+}
+
+static ssize_t
+thermal_cooling_device_max_state_show(struct device *dev,
+                                      struct device_attribute *attr, char *buf)
+{
+        struct thermal_cooling_device *cdev = to_cooling_device(dev);
+
+        return cdev->ops->get_max_state(cdev, buf);
+}
+
+static ssize_t
+thermal_cooling_device_cur_state_show(struct device *dev,
+                                      struct device_attribute *attr, char *buf)
+{
+        struct thermal_cooling_device *cdev = to_cooling_device(dev);
+
+        return cdev->ops->get_cur_state(cdev, buf);
+}
+
+static ssize_t
+thermal_cooling_device_cur_state_store(struct device *dev,
+                                       struct device_attribute *attr,
+                                       const char *buf, size_t count)
+{
+        struct thermal_cooling_device *cdev = to_cooling_device(dev);
+        int state;
+        int result;
+
+        if (!sscanf(buf, "%d\n", &state))
+                return -EINVAL;
+
+        if (state < 0)
+                return -EINVAL;
+
+        result = cdev->ops->set_cur_state(cdev, state);
+        if (result)
+                return result;
+        return count;
+}
+
+static struct device_attribute dev_attr_cdev_type =
+                __ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
+static DEVICE_ATTR(max_state, 0444,
+                   thermal_cooling_device_max_state_show, NULL);
+static DEVICE_ATTR(cur_state, 0644,
+                   thermal_cooling_device_cur_state_show,
+                   thermal_cooling_device_cur_state_store);
+
+static ssize_t
+thermal_cooling_device_trip_point_show(struct device *dev,
+                                    struct device_attribute *attr, char *buf)
+{
+        struct thermal_cooling_device_instance *instance;
+
+        instance =
+            container_of(attr, struct thermal_cooling_device_instance, attr);
+
+        if (instance->trip == THERMAL_TRIPS_NONE)
+                return sprintf(buf, "-1\n");
+        else
+                return sprintf(buf, "%d\n", instance->trip);
+}
+
+/* Device management */
+
+/**
+ * thermal_zone_bind_cooling_device - bind a cooling device to a thermal zone
+ * this function is usually called in the thermal zone device .bind callback.
+ * @tz:         thermal zone device
+ * @trip:       indicates which trip point the cooling devices is
+ *              associated with in this thermal zone.
+ * @cdev:       thermal cooling device
+ */
+int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
+                                     int trip,
+                                     struct thermal_cooling_device *cdev)
+{
+        struct thermal_cooling_device_instance *dev;
+        struct thermal_cooling_device_instance *pos;
+        int result;
+
+        if (trip >= tz->trips ||
+            (trip < 0 && trip != THERMAL_TRIPS_NONE))
+                return -EINVAL;
+
+        if (!tz || !cdev)
+                return -EINVAL;
+
+        dev =
+            kzalloc(sizeof(struct thermal_cooling_device_instance), GFP_KERNEL);
+        if (!dev)
+                return -ENOMEM;
+        dev->tz = tz;
+        dev->cdev = cdev;
+        dev->trip = trip;
+        result = get_idr(&tz->idr, &tz->lock, &dev->id);
+        if (result)
+                goto free_mem;
+
+        sprintf(dev->name, "cdev%d", dev->id);
+        result =
+            sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev->name);
+        if (result)
+                goto release_idr;
+
+        sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
+        dev->attr.attr.name = dev->attr_name;
+        dev->attr.attr.mode = 0444;
+        dev->attr.show = thermal_cooling_device_trip_point_show;
+        result = device_create_file(&tz->device, &dev->attr);
+        if (result)
+                goto remove_symbol_link;
+
+        mutex_lock(&tz->lock);
+        list_for_each_entry(pos, &tz->cooling_devices, node)
+            if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
+                result = -EEXIST;
+                break;
+        }
+        if (!result)
+                list_add_tail(&dev->node, &tz->cooling_devices);
+        mutex_unlock(&tz->lock);
+
+        if (!result)
+                return 0;
+
+        device_remove_file(&tz->device, &dev->attr);
+      remove_symbol_link:
+        sysfs_remove_link(&tz->device.kobj, dev->name);
+      release_idr:
+        release_idr(&tz->idr, &tz->lock, dev->id);
+      free_mem:
+        kfree(dev);
+        return result;
+}
+EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
+
+/**
+ * thermal_zone_unbind_cooling_device - unbind a cooling device from a thermal zone
+ * this function is usually called in the thermal zone device .unbind callback.
+ * @tz:         thermal zone device
+ * @trip:       indicates which trip point the cooling devices is
+ *              associated with in this thermal zone.
+ * @cdev:       thermal cooling device
+ */
+int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
+                                       int trip,
+                                       struct thermal_cooling_device *cdev)
+{
+        struct thermal_cooling_device_instance *pos, *next;
+
+        mutex_lock(&tz->lock);
+        list_for_each_entry_safe(pos, next, &tz->cooling_devices, node) {
+                if (pos->tz == tz && pos->trip == trip
+                    && pos->cdev == cdev) {
+                        list_del(&pos->node);
+                        mutex_unlock(&tz->lock);
+                        goto unbind;
+                }
+        }
+        mutex_unlock(&tz->lock);
+
+        return -ENODEV;
+
+      unbind:
+        device_remove_file(&tz->device, &pos->attr);
+        sysfs_remove_link(&tz->device.kobj, pos->name);
+        release_idr(&tz->idr, &tz->lock, pos->id);
+        kfree(pos);
+        return 0;
+}
+EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
+
+static void thermal_release(struct device *dev)
+{
+        struct thermal_zone_device *tz;
+        struct thermal_cooling_device *cdev;
+
+        if (!strncmp(dev->bus_id, "thermal_zone", sizeof "thermal_zone" - 1)) {
+                tz = to_thermal_zone(dev);
+                kfree(tz);
+        } else {
+                cdev = to_cooling_device(dev);
+                kfree(cdev);
+        }
+}
+
+static struct class thermal_class = {
+        .name = "thermal",
+        .dev_release = thermal_release,
+};
+
+/**
+ * thermal_cooling_device_register - register a new thermal cooling device
+ * @type:       the thermal cooling device type.
+ * @devdata:    device private data.
+ * @ops:                standard thermal cooling devices callbacks.
+ */
+struct thermal_cooling_device *thermal_cooling_device_register(char *type,
+                       void *devdata, struct thermal_cooling_device_ops *ops)
+{
+        struct thermal_cooling_device *cdev;
+        struct thermal_zone_device *pos;
+        int result;
+
+        if (strlen(type) >= THERMAL_NAME_LENGTH)
+                return NULL;
+
+        if (!ops || !ops->get_max_state || !ops->get_cur_state ||
+                !ops->set_cur_state)
+                return NULL;
+
+        cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
+        if (!cdev)
+                return NULL;
+
+        result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
+        if (result) {
+                kfree(cdev);
+                return NULL;
+        }
+
+        strcpy(cdev->type, type);
+        cdev->ops = ops;
+        cdev->device.class = &thermal_class;
+        cdev->devdata = devdata;
+        sprintf(cdev->device.bus_id, "cooling_device%d", cdev->id);
+        result = device_register(&cdev->device);
+        if (result) {
+                release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
+                kfree(cdev);
+                return NULL;
+        }
+
+        /* sys I/F */
+        if (type) {
+                result = device_create_file(&cdev->device,
+                                            &dev_attr_cdev_type);
+                if (result)
+                        goto unregister;
+        }
+
+        result = device_create_file(&cdev->device, &dev_attr_max_state);
+        if (result)
+                goto unregister;
+
+        result = device_create_file(&cdev->device, &dev_attr_cur_state);
+        if (result)
+                goto unregister;
+
+        mutex_lock(&thermal_list_lock);
+        list_add(&cdev->node, &thermal_cdev_list);
+        list_for_each_entry(pos, &thermal_tz_list, node) {
+                if (!pos->ops->bind)
+                        continue;
+                result = pos->ops->bind(pos, cdev);
+                if (result)
+                        break;
+
+        }
+        mutex_unlock(&thermal_list_lock);
+
+        if (!result)
+                return cdev;
+
+      unregister:
+        release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
+        device_unregister(&cdev->device);
+        return NULL;
+}
+EXPORT_SYMBOL(thermal_cooling_device_register);
+
+/**
+ * thermal_cooling_device_unregister - removes the registered thermal cooling device
+ *
+ * @cdev:       the thermal cooling device to remove.
+ *
+ * thermal_cooling_device_unregister() must be called when the device is no
+ * longer needed.
+ */
+void thermal_cooling_device_unregister(struct
+                                       thermal_cooling_device
+                                       *cdev)
+{
+        struct thermal_zone_device *tz;
+        struct thermal_cooling_device *pos = NULL;
+
+        if (!cdev)
+                return;
+
+        mutex_lock(&thermal_list_lock);
+        list_for_each_entry(pos, &thermal_cdev_list, node)
+            if (pos == cdev)
+                break;
+        if (pos != cdev) {
+                /* thermal cooling device not found */
+                mutex_unlock(&thermal_list_lock);
+                return;
+        }
+        list_del(&cdev->node);
+        list_for_each_entry(tz, &thermal_tz_list, node) {
+                if (!tz->ops->unbind)
+                        continue;
+                tz->ops->unbind(tz, cdev);
+        }
+        mutex_unlock(&thermal_list_lock);
+        if (cdev->type[0])
+                device_remove_file(&cdev->device,
+                                   &dev_attr_cdev_type);
+        device_remove_file(&cdev->device, &dev_attr_max_state);
+        device_remove_file(&cdev->device, &dev_attr_cur_state);
+
+        release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
+        device_unregister(&cdev->device);
+        return;
+}
+EXPORT_SYMBOL(thermal_cooling_device_unregister);
+
+/**
+ * thermal_zone_device_register - register a new thermal zone device
+ * @type:       the thermal zone device type
+ * @trips:      the number of trip points the thermal zone support
+ * @devdata:    private device data
+ * @ops:        standard thermal zone device callbacks
+ *
+ * thermal_zone_device_unregister() must be called when the device is no
+ * longer needed.
+ */
+struct thermal_zone_device *thermal_zone_device_register(char *type,
+                                        int trips, void *devdata,
+                                        struct thermal_zone_device_ops *ops)
+{
+        struct thermal_zone_device *tz;
+        struct thermal_cooling_device *pos;
+        int result;
+        int count;
+
+        if (strlen(type) >= THERMAL_NAME_LENGTH)
+                return NULL;
+
+        if (trips > THERMAL_MAX_TRIPS || trips < 0)
+                return NULL;
+
+        if (!ops || !ops->get_temp)
+                return NULL;
+
+        tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
+        if (!tz)
+                return NULL;
+
+        INIT_LIST_HEAD(&tz->cooling_devices);
+        idr_init(&tz->idr);
+        mutex_init(&tz->lock);
+        result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
+        if (result) {
+                kfree(tz);
+                return NULL;
+        }
+
+        strcpy(tz->type, type);
+        tz->ops = ops;
+        tz->device.class = &thermal_class;
+        tz->devdata = devdata;
+        tz->trips = trips;
+        sprintf(tz->device.bus_id, "thermal_zone%d", tz->id);
+        result = device_register(&tz->device);
+        if (result) {
+                release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
+                kfree(tz);
+                return NULL;
+        }
+
+        /* sys I/F */
+        if (type) {
+                result = device_create_file(&tz->device, &dev_attr_type);
+                if (result)
+                        goto unregister;
+        }
+
+        result = device_create_file(&tz->device, &dev_attr_temp);
+        if (result)
+                goto unregister;
+
+        if (ops->get_mode) {
+                result = device_create_file(&tz->device, &dev_attr_mode);
+                if (result)
+                        goto unregister;
+        }
+
+        for (count = 0; count < trips; count++) {
+                TRIP_POINT_ATTR_ADD(&tz->device, count, result);
+                if (result)
+                        goto unregister;
+        }
+
+        mutex_lock(&thermal_list_lock);
+        list_add_tail(&tz->node, &thermal_tz_list);
+        if (ops->bind)
+                list_for_each_entry(pos, &thermal_cdev_list, node) {
+                        result = ops->bind(tz, pos);
+                        if (result)
+                                break;
+                }
+        mutex_unlock(&thermal_list_lock);
+
+        if (!result)
+                return tz;
+
+      unregister:
+        release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
+        device_unregister(&tz->device);
+        return NULL;
+}
+EXPORT_SYMBOL(thermal_zone_device_register);
+
+/**
+ * thermal_device_unregister - removes the registered thermal zone device
+ *
+ * @tz: the thermal zone device to remove
+ */
+void thermal_zone_device_unregister(struct thermal_zone_device *tz)
+{
+        struct thermal_cooling_device *cdev;
+        struct thermal_zone_device *pos = NULL;
+        int count;
+
+        if (!tz)
+                return;
+
+        mutex_lock(&thermal_list_lock);
+        list_for_each_entry(pos, &thermal_tz_list, node)
+            if (pos == tz)
+                break;
+        if (pos != tz) {
+                /* thermal zone device not found */
+                mutex_unlock(&thermal_list_lock);
+                return;
+        }
+        list_del(&tz->node);
+        if (tz->ops->unbind)
+                list_for_each_entry(cdev, &thermal_cdev_list, node)
+                    tz->ops->unbind(tz, cdev);
+        mutex_unlock(&thermal_list_lock);
+
+        if (tz->type[0])
+                device_remove_file(&tz->device, &dev_attr_type);
+        device_remove_file(&tz->device, &dev_attr_temp);
+        if (tz->ops->get_mode)
+                device_remove_file(&tz->device, &dev_attr_mode);
+
+        for (count = 0; count < tz->trips; count++)
+                TRIP_POINT_ATTR_REMOVE(&tz->device, count);
+
+        release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
+        idr_destroy(&tz->idr);
+        mutex_destroy(&tz->lock);
+        device_unregister(&tz->device);
+        return;
+}
+EXPORT_SYMBOL(thermal_zone_device_unregister);
+
+static int __init thermal_init(void)
+{
+        int result = 0;
+
+        result = class_register(&thermal_class);
+        if (result) {
+                idr_destroy(&thermal_tz_idr);
+                idr_destroy(&thermal_cdev_idr);
+                mutex_destroy(&thermal_idr_lock);
+                mutex_destroy(&thermal_list_lock);
+        }
+        return result;
+}
+
+static void __exit thermal_exit(void)
+{
+        class_unregister(&thermal_class);
+        idr_destroy(&thermal_tz_idr);
+        idr_destroy(&thermal_cdev_idr);
+        mutex_destroy(&thermal_idr_lock);
+        mutex_destroy(&thermal_list_lock);
+}
+
+subsys_initcall(thermal_init);
+module_exit(thermal_exit);
diff --git a/include/acpi/acglobal.h b/include/acpi/acglobal.h
index 347a911d8237..47a1fd8f2d8a 100644
--- a/include/acpi/acglobal.h
+++ b/include/acpi/acglobal.h
@@ -117,10 +117,6 @@ extern u32 acpi_dbg_layer;
 
 extern u32 acpi_gbl_nesting_level;
 
-/* Event counters */
-
-ACPI_EXTERN u32 acpi_gpe_count;
-
 /* Support for dynamic control method tracing mechanism */
 
 ACPI_EXTERN u32 acpi_gbl_original_dbg_level;
diff --git a/include/acpi/acmacros.h b/include/acpi/acmacros.h
index 45662f6dbdb6..99d171c87c84 100644
--- a/include/acpi/acmacros.h
+++ b/include/acpi/acmacros.h
@@ -486,7 +486,7 @@
 #define ACPI_FUNCTION_NAME(name)
 #endif
 
-#ifdef DEBUG_FUNC_TRACE
+#ifdef CONFIG_ACPI_DEBUG_FUNC_TRACE
 
 #define ACPI_FUNCTION_TRACE(a)          ACPI_FUNCTION_NAME(a) \
                           acpi_ut_trace(ACPI_DEBUG_PARAMETERS)
@@ -565,7 +565,7 @@
 
 #endif                          /* ACPI_SIMPLE_RETURN_MACROS */
 
-#else /* !DEBUG_FUNC_TRACE */
+#else /* !CONFIG_ACPI_DEBUG_FUNC_TRACE */
 
 #define ACPI_FUNCTION_TRACE(a)
 #define ACPI_FUNCTION_TRACE_PTR(a,b)
@@ -584,7 +584,7 @@
 #define return_UINT32(s)                return(s)
 #define return_PTR(s)                   return(s)
 
-#endif /* DEBUG_FUNC_TRACE */
+#endif /* CONFIG_ACPI_DEBUG_FUNC_TRACE */
 
 /* Conditional execution */
 
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index fb7171b1bd22..2f1c68c7a727 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -321,6 +321,11 @@ struct acpi_bus_event {
 
 extern struct kobject *acpi_kobj;
 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
+void acpi_bus_private_data_handler(acpi_handle, u32, void *);
+int acpi_bus_get_private_data(acpi_handle, void **);
+extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
+extern int register_acpi_notifier(struct notifier_block *);
+extern int unregister_acpi_notifier(struct notifier_block *);
 /*
  * External Functions
  */
diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h
index f85f77a538aa..9757a040a505 100644
--- a/include/acpi/acpi_drivers.h
+++ b/include/acpi/acpi_drivers.h
@@ -48,6 +48,7 @@
 #define ACPI_BUTTON_HID_SLEEPF          "LNXSLPBN"
 #define ACPI_VIDEO_HID                  "LNXVIDEO"
 #define ACPI_BAY_HID                    "LNXIOBAY"
+#define ACPI_DOCK_HID                   "LNXDOCK"
 
 /* --------------------------------------------------------------------------
                                        PCI
@@ -73,7 +74,6 @@ struct pci_bus;
 
 acpi_status acpi_get_pci_id(acpi_handle handle, struct acpi_pci_id *id);
 int acpi_pci_bind(struct acpi_device *device);
-int acpi_pci_unbind(struct acpi_device *device);
 int acpi_pci_bind_root(struct acpi_device *device, struct acpi_pci_id *id,
                        struct pci_bus *bus);
 
diff --git a/include/acpi/acpi_numa.h b/include/acpi/acpi_numa.h
index 62c5ee4311da..173972672175 100644
--- a/include/acpi/acpi_numa.h
+++ b/include/acpi/acpi_numa.h
@@ -15,7 +15,6 @@ extern int pxm_to_node(int);
 extern int node_to_pxm(int);
 extern void __acpi_map_pxm_to_node(int, int);
 extern int acpi_map_pxm_to_node(int);
-extern void __cpuinit acpi_unmap_pxm_to_node(int);
 
 #endif                          /* CONFIG_ACPI_NUMA */
 #endif                          /* __ACP_NUMA_H */
diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h
index ca882b8e7d10..022a5fd80c8e 100644
--- a/include/acpi/acpiosxf.h
+++ b/include/acpi/acpiosxf.h
@@ -181,6 +181,9 @@ acpi_os_install_interrupt_handler(u32 gsi,
 acpi_status
 acpi_os_remove_interrupt_handler(u32 gsi, acpi_osd_handler service_routine);
 
+void acpi_os_gpe_count(u32 gpe_number);
+void acpi_os_fixed_event_count(u32 fixed_event_number);
+
 /*
  * Threads and Scheduling
  */
@@ -239,8 +242,8 @@ acpi_status acpi_os_validate_interface(char *interface);
 acpi_status acpi_osi_invalidate(char* interface);
 
 acpi_status
-acpi_os_validate_address(u8 space_id,
-                         acpi_physical_address address, acpi_size length);
+acpi_os_validate_address(u8 space_id, acpi_physical_address address,
+                         acpi_size length, char *name);
 
 u64 acpi_os_get_timer(void);
 
diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index 6e253b5b0f3b..cdc8004cfd12 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -4,7 +4,7 @@
 #include <linux/kernel.h>
 #include <linux/cpu.h>
 #include <linux/cpuidle.h>
-
+#include <linux/thermal.h>
 #include <asm/acpi.h>
 
 #define ACPI_PROCESSOR_BUSY_METRIC      10
@@ -34,6 +34,7 @@
 
 #define ACPI_CSTATE_SYSTEMIO    (0)
 #define ACPI_CSTATE_FFH         (1)
+#define ACPI_CSTATE_HALT        (2)
 
 /* Power Management */
 
@@ -64,7 +65,7 @@ struct acpi_processor_cx {
         u8 valid;
         u8 type;
         u32 address;
-        u8 space_id;
+        u8 entry_method;
         u8 index;
         u32 latency;
         u32 latency_ticks;
@@ -176,6 +177,8 @@ struct acpi_processor_throttling {
         u32 address;
         u8 duty_offset;
         u8 duty_width;
+        u8 tsd_valid_flag;
+        unsigned int shared_type;
         struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING];
 };
 
@@ -218,7 +221,7 @@ struct acpi_processor {
         struct acpi_processor_performance *performance;
         struct acpi_processor_throttling throttling;
         struct acpi_processor_limit limit;
-
+        struct thermal_cooling_device *cdev;
         /* the _PDC objects for this processor, if any */
         struct acpi_object_list *pdc;
 };
@@ -316,7 +319,7 @@ static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr)
 int acpi_processor_get_throttling_info(struct acpi_processor *pr);
 extern int acpi_processor_set_throttling(struct acpi_processor *pr, int state);
 extern struct file_operations acpi_processor_throttling_fops;
-
+extern void acpi_processor_throttling_init(void);
 /* in processor_idle.c */
 int acpi_processor_power_init(struct acpi_processor *pr,
                               struct acpi_device *device);
@@ -330,7 +333,7 @@ extern struct cpuidle_driver acpi_idle_driver;
 /* in processor_thermal.c */
 int acpi_processor_get_limit_info(struct acpi_processor *pr);
 extern struct file_operations acpi_processor_limit_fops;
-
+extern struct thermal_cooling_device_ops processor_cooling_ops;
 #ifdef CONFIG_CPU_FREQ
 void acpi_thermal_cpufreq_init(void);
 void acpi_thermal_cpufreq_exit(void);
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 63f2e6ed698f..ddbe7efe590e 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -25,6 +25,7 @@
 #ifndef _LINUX_ACPI_H
 #define _LINUX_ACPI_H
 
+#include <linux/ioport.h>       /* for struct resource */
 
 #ifdef  CONFIG_ACPI
 
@@ -43,8 +44,6 @@
 #include <linux/dmi.h>
 
 
-#ifdef CONFIG_ACPI
-
 enum acpi_irq_model_id {
         ACPI_IRQ_MODEL_PIC = 0,
         ACPI_IRQ_MODEL_IOAPIC,
@@ -80,7 +79,6 @@ typedef int (*acpi_table_handler) (struct acpi_table_header *table);
 typedef int (*acpi_table_entry_handler) (struct acpi_subtable_header *header, const unsigned long end);
 
 char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
-unsigned long acpi_find_rsdp (void);
 int acpi_boot_init (void);
 int acpi_boot_table_init (void);
 int acpi_numa_init (void);
@@ -115,8 +113,8 @@ int acpi_unmap_lsapic(int cpu);
 
 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base);
 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);
-
-extern int acpi_mp_config;
+void acpi_irq_stats_init(void);
+extern u32 acpi_irq_handled;
 
 extern struct acpi_mcfg_allocation *pci_mmcfg_config;
 extern int pci_mmcfg_config_num;
@@ -124,12 +122,6 @@ extern int pci_mmcfg_config_num;
 extern int sbf_port;
 extern unsigned long acpi_realmode_flags;
 
-#else   /* !CONFIG_ACPI */
-
-#define acpi_mp_config  0
-
-#endif  /* !CONFIG_ACPI */
-
 int acpi_register_gsi (u32 gsi, int triggering, int polarity);
 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
 
@@ -145,8 +137,6 @@ extern int acpi_get_override_irq(int bus_irq, int *trigger, int *polarity);
  */
 void acpi_unregister_gsi (u32 gsi);
 
-#ifdef CONFIG_ACPI
-
 struct acpi_prt_entry {
         struct list_head        node;
         struct acpi_pci_id      id;
@@ -179,8 +169,6 @@ struct acpi_pci_driver {
 int acpi_pci_register_driver(struct acpi_pci_driver *driver);
 void acpi_pci_unregister_driver(struct acpi_pci_driver *driver);
 
-#endif /* CONFIG_ACPI */
-
 #ifdef CONFIG_ACPI_EC
 
 extern int ec_read(u8 addr, u8 *val);
@@ -192,6 +180,26 @@ extern int ec_transaction(u8 command,
 
 #endif /*CONFIG_ACPI_EC*/
 
+#if defined(CONFIG_ACPI_WMI) || defined(CONFIG_ACPI_WMI_MODULE)
+
+typedef void (*wmi_notify_handler) (u32 value, void *context);
+
+extern acpi_status wmi_evaluate_method(const char *guid, u8 instance,
+                                        u32 method_id,
+                                        const struct acpi_buffer *in,
+                                        struct acpi_buffer *out);
+extern acpi_status wmi_query_block(const char *guid, u8 instance,
+                                        struct acpi_buffer *out);
+extern acpi_status wmi_set_block(const char *guid, u8 instance,
+                                        const struct acpi_buffer *in);
+extern acpi_status wmi_install_notify_handler(const char *guid,
+                                        wmi_notify_handler handler, void *data);
+extern acpi_status wmi_remove_notify_handler(const char *guid);
+extern acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out);
+extern bool wmi_has_guid(const char *guid);
+
+#endif  /* CONFIG_ACPI_WMI */
+
 extern int acpi_blacklisted(void);
 #ifdef CONFIG_DMI
 extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);
@@ -217,6 +225,13 @@ extern int pnpacpi_disabled;
 #define PXM_INVAL       (-1)
 #define NID_INVAL       (-1)
 
+int acpi_check_resource_conflict(struct resource *res);
+
+int acpi_check_region(resource_size_t start, resource_size_t n,
+                      const char *name);
+int acpi_check_mem_region(resource_size_t start, resource_size_t n,
+                      const char *name);
+
 #else   /* CONFIG_ACPI */
 
 static inline int acpi_boot_init(void)
@@ -229,5 +244,22 @@ static inline int acpi_boot_table_init(void)
         return 0;
 }
 
+static inline int acpi_check_resource_conflict(struct resource *res)
+{
+        return 0;
+}
+
+static inline int acpi_check_region(resource_size_t start, resource_size_t n,
+                                    const char *name)
+{
+        return 0;
+}
+
+static inline int acpi_check_mem_region(resource_size_t start,
+                                        resource_size_t n, const char *name)
+{
+        return 0;
+}
+
 #endif  /* !CONFIG_ACPI */
 #endif  /*_LINUX_ACPI_H*/
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index b0fd85ab9efb..385d45b616db 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -46,9 +46,10 @@ struct cpuidle_state {
 /* Idle State Flags */
 #define CPUIDLE_FLAG_TIME_VALID (0x01) /* is residency time measurable? */
 #define CPUIDLE_FLAG_CHECK_BM   (0x02) /* BM activity will exit state */
-#define CPUIDLE_FLAG_SHALLOW    (0x10) /* low latency, minimal savings */
-#define CPUIDLE_FLAG_BALANCED   (0x20) /* medium latency, moderate savings */
-#define CPUIDLE_FLAG_DEEP       (0x40) /* high latency, large savings */
+#define CPUIDLE_FLAG_POLL       (0x10) /* no latency, no savings */
+#define CPUIDLE_FLAG_SHALLOW    (0x20) /* low latency, minimal savings */
+#define CPUIDLE_FLAG_BALANCED   (0x40) /* medium latency, moderate savings */
+#define CPUIDLE_FLAG_DEEP       (0x80) /* high latency, large savings */
 
 #define CPUIDLE_DRIVER_FLAGS_MASK (0xFFFF0000)
 
@@ -178,4 +179,10 @@ static inline void cpuidle_unregister_governor(struct cpuidle_governor *gov) { }
 
 #endif
 
+#ifdef CONFIG_ARCH_HAS_CPU_RELAX
+#define CPUIDLE_DRIVER_STATE_START      1
+#else
+#define CPUIDLE_DRIVER_STATE_START      0
+#endif
+
 #endif /* _LINUX_CPUIDLE_H */
diff --git a/include/linux/dmi.h b/include/linux/dmi.h
index 5b42a659a308..b1251b2af568 100644
--- a/include/linux/dmi.h
+++ b/include/linux/dmi.h
@@ -79,7 +79,6 @@ extern void dmi_scan_machine(void);
 extern int dmi_get_year(int field);
 extern int dmi_name_in_vendors(const char *str);
 extern int dmi_available;
-extern char *dmi_get_slot(int slot);
 
 #else
 
@@ -90,7 +89,6 @@ static inline const struct dmi_device * dmi_find_device(int type, const char *na
 static inline int dmi_get_year(int year) { return 0; }
 static inline int dmi_name_in_vendors(const char *s) { return 0; }
 #define dmi_available 0
-static inline char *dmi_get_slot(int slot) { return NULL; }
 
 #endif
 
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 18222f267bc4..9e01f376840a 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -243,6 +243,7 @@ extern enum system_states {
 #define TAINT_BAD_PAGE                  (1<<5)
 #define TAINT_USER                      (1<<6)
 #define TAINT_DIE                       (1<<7)
+#define TAINT_OVERRIDDEN_ACPI_TABLE     (1<<8)
 
 extern void dump_stack(void) __cold;
 
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 5cbf3e371012..68ed19ccf1f7 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -94,6 +94,7 @@ enum power_supply_property {
         /* Properties of type `const char *' */
         POWER_SUPPLY_PROP_MODEL_NAME,
         POWER_SUPPLY_PROP_MANUFACTURER,
+        POWER_SUPPLY_PROP_SERIAL_NUMBER,
 };
 
 enum power_supply_type {
diff --git a/include/linux/sonypi.h b/include/linux/sonypi.h
index 40c7b5d993b9..f41ffd7c2dd9 100644
--- a/include/linux/sonypi.h
+++ b/include/linux/sonypi.h
@@ -101,6 +101,8 @@
 #define SONYPI_EVENT_FNKEY_RELEASED             59
 #define SONYPI_EVENT_WIRELESS_ON                60
 #define SONYPI_EVENT_WIRELESS_OFF               61
+#define SONYPI_EVENT_ZOOM_IN_PRESSED            62
+#define SONYPI_EVENT_ZOOM_OUT_PRESSED           63
 
 /* get/set brightness */
 #define SONYPI_IOCGBRT          _IOR('v', 0, __u8)
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
new file mode 100644
index 000000000000..bba7712cadc7
--- /dev/null
+++ b/include/linux/thermal.h
@@ -0,0 +1,94 @@
+/*
+ *  thermal.h  ($Revision: 0 $)
+ *
+ *  Copyright (C) 2008  Intel Corp
+ *  Copyright (C) 2008  Zhang Rui <rui.zhang@intel.com>
+ *  Copyright (C) 2008  Sujith Thomas <sujith.thomas@intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful, but
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#ifndef __THERMAL_H__
+#define __THERMAL_H__
+
+#include <linux/idr.h>
+#include <linux/device.h>
+
+struct thermal_zone_device;
+struct thermal_cooling_device;
+
+struct thermal_zone_device_ops {
+        int (*bind) (struct thermal_zone_device *,
+                     struct thermal_cooling_device *);
+        int (*unbind) (struct thermal_zone_device *,
+                       struct thermal_cooling_device *);
+        int (*get_temp) (struct thermal_zone_device *, char *);
+        int (*get_mode) (struct thermal_zone_device *, char *);
+        int (*set_mode) (struct thermal_zone_device *, const char *);
+        int (*get_trip_type) (struct thermal_zone_device *, int, char *);
+        int (*get_trip_temp) (struct thermal_zone_device *, int, char *);
+};
+
+struct thermal_cooling_device_ops {
+        int (*get_max_state) (struct thermal_cooling_device *, char *);
+        int (*get_cur_state) (struct thermal_cooling_device *, char *);
+        int (*set_cur_state) (struct thermal_cooling_device *, unsigned int);
+};
+
+#define THERMAL_TRIPS_NONE -1
+#define THERMAL_MAX_TRIPS 10
+#define THERMAL_NAME_LENGTH 20
+struct thermal_cooling_device {
+        int id;
+        char type[THERMAL_NAME_LENGTH];
+        struct device device;
+        void *devdata;
+        struct thermal_cooling_device_ops *ops;
+        struct list_head node;
+};
+
+#define KELVIN_TO_CELSIUS(t)    (long)(((long)t-2732 >= 0) ?    \
+                                ((long)t-2732+5)/10 : ((long)t-2732-5)/10)
+#define CELSIUS_TO_KELVIN(t)    ((t)*10+2732)
+
+struct thermal_zone_device {
+        int id;
+        char type[THERMAL_NAME_LENGTH];
+        struct device device;
+        void *devdata;
+        int trips;
+        struct thermal_zone_device_ops *ops;
+        struct list_head cooling_devices;
+        struct idr idr;
+        struct mutex lock;      /* protect cooling devices list */
+        struct list_head node;
+};
+
+struct thermal_zone_device *thermal_zone_device_register(char *, int, void *,
+                                        struct thermal_zone_device_ops *);
+void thermal_zone_device_unregister(struct thermal_zone_device *);
+
+int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
+                                     struct thermal_cooling_device *);
+int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
+                                       struct thermal_cooling_device *);
+
+struct thermal_cooling_device *thermal_cooling_device_register(char *, void *,
+                                        struct thermal_cooling_device_ops *);
+void thermal_cooling_device_unregister(struct thermal_cooling_device *);
+
+#endif                          /* __THERMAL_H__ */
diff --git a/init/initramfs.c b/init/initramfs.c
index d53fee8d8604..c0b1e0533d80 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -538,7 +538,7 @@ skip:
         initrd_end = 0;
 }
 
-static int __init populate_rootfs(void)
+int __init populate_rootfs(void)
 {
         char *err = unpack_to_rootfs(__initramfs_start,
                          __initramfs_end - __initramfs_start, 0);
@@ -577,4 +577,10 @@ static int __init populate_rootfs(void)
         }
         return 0;
 }
+#ifndef CONFIG_ACPI_CUSTOM_DSDT_INITRD
+/*
+ * if this option is enabled, populate_rootfs() is called _earlier_ in the
+ * boot sequence. This insures that the ACPI initialisation can find the file.
+ */
 rootfs_initcall(populate_rootfs);
+#endif
diff --git a/init/main.c b/init/main.c
index c691f5f7fc27..2a78932f6c07 100644
--- a/init/main.c
+++ b/init/main.c
@@ -102,6 +102,12 @@ static inline void mark_rodata_ro(void) { }
 extern void tc_init(void);
 #endif
 
+#ifdef CONFIG_ACPI_CUSTOM_DSDT_INITRD
+extern int populate_rootfs(void);
+#else
+static inline void populate_rootfs(void) {}
+#endif
+
 enum system_states system_state;
 EXPORT_SYMBOL(system_state);
 
@@ -648,6 +654,7 @@ asmlinkage void __init start_kernel(void)
 
         check_bugs();
 
+        populate_rootfs(); /* For DSDT override from initramfs */
         acpi_early_init(); /* before LAPIC and SMP init */
 
         /* Do the rest non-__init'ed, we're now alive */
diff --git a/kernel/panic.c b/kernel/panic.c
index d9e90cfe3298..24af9f8bac99 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -161,7 +161,7 @@ const char *print_tainted(void)
 {
         static char buf[20];
         if (tainted) {
-                snprintf(buf, sizeof(buf), "Tainted: %c%c%c%c%c%c%c%c",
+                snprintf(buf, sizeof(buf), "Tainted: %c%c%c%c%c%c%c%c%c",
                         tainted & TAINT_PROPRIETARY_MODULE ? 'P' : 'G',
                         tainted & TAINT_FORCED_MODULE ? 'F' : ' ',
                         tainted & TAINT_UNSAFE_SMP ? 'S' : ' ',
@@ -169,7 +169,8 @@ const char *print_tainted(void)
                         tainted & TAINT_MACHINE_CHECK ? 'M' : ' ',
                         tainted & TAINT_BAD_PAGE ? 'B' : ' ',
                         tainted & TAINT_USER ? 'U' : ' ',
-                        tainted & TAINT_DIE ? 'D' : ' ');
+                        tainted & TAINT_DIE ? 'D' : ' ',
+                        tainted & TAINT_OVERRIDDEN_ACPI_TABLE ? 'A' : ' ');
         }
         else
                 snprintf(buf, sizeof(buf), "Not tainted");
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index ef9b802738a5..79833170bb9c 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -74,8 +74,8 @@ config PM_TRACE_RTC
         RTC across reboots, so that you can debug a machine that just hangs
         during suspend (or more commonly, during resume).
 
-        To use this debugging feature you should attempt to suspend the machine,
-        then reboot it, then run
+        To use this debugging feature you should attempt to suspend the
+        machine, reboot it and then run
 
                 dmesg -s 1000000 | grep 'hash matches'
 
@@ -123,7 +123,10 @@ config HIBERNATION
           called "hibernation" in user interfaces.  STD checkpoints the
           system and powers it off; and restores that checkpoint on reboot.
 
-          You can suspend your machine with 'echo disk > /sys/power/state'.
+          You can suspend your machine with 'echo disk > /sys/power/state'
+          after placing resume=/dev/swappartition on the kernel command line
+          in your bootloader's configuration file.
+
           Alternatively, you can use the additional userland tools available
           from <http://suspend.sf.net>.