7 files changed, 452 insertions, 4 deletions

diff --git a/Documentation/ABI/stable/sysfs-class-backlight b/Documentation/ABI/stable/sysfs-class-backlight
new file mode 100644
index 000000000000..4d637e1c4ff7
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-class-backlight
@@ -0,0 +1,36 @@
+What:           /sys/class/backlight/<backlight>/bl_power
+Date:           April 2005
+KernelVersion:  2.6.12
+Contact:        Richard Purdie <rpurdie@rpsys.net>
+Description:
+                Control BACKLIGHT power, values are FB_BLANK_* from fb.h
+                 - FB_BLANK_UNBLANK (0)   : power on.
+                 - FB_BLANK_POWERDOWN (4) : power off
+Users:          HAL
+
+What:           /sys/class/backlight/<backlight>/brightness
+Date:           April 2005
+KernelVersion:  2.6.12
+Contact:        Richard Purdie <rpurdie@rpsys.net>
+Description:
+                Control the brightness for this <backlight>. Values
+                are between 0 and max_brightness. This file will also
+                show the brightness level stored in the driver, which
+                may not be the actual brightness (see actual_brightness).
+Users:          HAL
+
+What:           /sys/class/backlight/<backlight>/actual_brightness
+Date:           March 2006
+KernelVersion:  2.6.17
+Contact:        Richard Purdie <rpurdie@rpsys.net>
+Description:
+                Show the actual brightness by querying the hardware.
+Users:          HAL
+
+What:           /sys/class/backlight/<backlight>/max_brightness
+Date:           April 2005
+KernelVersion:  2.6.12
+Contact:        Richard Purdie <rpurdie@rpsys.net>
+Description:
+                Maximum brightness for <backlight>.
+Users:          HAL
diff --git a/Documentation/ABI/testing/sysfs-class-lcd b/Documentation/ABI/testing/sysfs-class-lcd
new file mode 100644
index 000000000000..35906bf7aa70
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-lcd
@@ -0,0 +1,23 @@
+What:           /sys/class/lcd/<lcd>/lcd_power
+Date:           April 2005
+KernelVersion:  2.6.12
+Contact:        Richard Purdie <rpurdie@rpsys.net>
+Description:
+                Control LCD power, values are FB_BLANK_* from fb.h
+                 - FB_BLANK_UNBLANK (0)   : power on.
+                 - FB_BLANK_POWERDOWN (4) : power off
+
+What:           /sys/class/lcd/<lcd>/contrast
+Date:           April 2005
+KernelVersion:  2.6.12
+Contact:        Richard Purdie <rpurdie@rpsys.net>
+Description:
+                Current contrast of this LCD device. Value is between 0 and
+                /sys/class/lcd/<lcd>/max_contrast.
+
+What:           /sys/class/lcd/<lcd>/max_contrast
+Date:           April 2005
+KernelVersion:  2.6.12
+Contact:        Richard Purdie <rpurdie@rpsys.net>
+Description:
+                Maximum contrast for this LCD device.
diff --git a/Documentation/ABI/testing/sysfs-class-led b/Documentation/ABI/testing/sysfs-class-led
new file mode 100644
index 000000000000..9e4541d71cb6
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-led
@@ -0,0 +1,28 @@
+What:           /sys/class/leds/<led>/brightness
+Date:           March 2006
+KernelVersion:  2.6.17
+Contact:        Richard Purdie <rpurdie@rpsys.net>
+Description:
+                Set the brightness of the LED. Most LEDs don't
+                have hardware brightness support so will just be turned on for
+                non-zero brightness settings. The value is between 0 and
+                /sys/class/leds/<led>/max_brightness.
+
+What:           /sys/class/leds/<led>/max_brightness
+Date:           March 2006
+KernelVersion:  2.6.17
+Contact:        Richard Purdie <rpurdie@rpsys.net>
+Description:
+                Maximum brightness level for this led, default is 255 (LED_FULL).
+
+What:           /sys/class/leds/<led>/trigger
+Date:           March 2006
+KernelVersion:  2.6.17
+Contact:        Richard Purdie <rpurdie@rpsys.net>
+Description:
+                Set the trigger for this LED. A trigger is a kernel based source
+                of led events.
+                You can change triggers in a similar manner to the way an IO
+                scheduler is chosen. Trigger specific parameters can appear in
+                /sys/class/leds/<led> once a given trigger is selected.
+
diff --git a/Documentation/ABI/testing/sysfs-platform-asus-laptop b/Documentation/ABI/testing/sysfs-platform-asus-laptop
new file mode 100644
index 000000000000..a1cb660c50cf
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-asus-laptop
@@ -0,0 +1,52 @@
+What:           /sys/devices/platform/asus-laptop/display
+Date:           January 2007
+KernelVersion:  2.6.20
+Contact:        "Corentin Chary" <corentincj@iksaif.net>
+Description:
+                This file allows display switching. The value
+                is composed by 4 bits and defined as follow:
+                4321
+                |||`- LCD
+                ||`-- CRT
+                |`--- TV
+                `---- DVI
+                Ex: - 0 (0000b) means no display
+                    - 3 (0011b) CRT+LCD.
+
+What:           /sys/devices/platform/asus-laptop/gps
+Date:           January 2007
+KernelVersion:  2.6.20
+Contact:        "Corentin Chary" <corentincj@iksaif.net>
+Description:
+                Control the gps device. 1 means on, 0 means off.
+Users:          Lapsus
+
+What:           /sys/devices/platform/asus-laptop/ledd
+Date:           January 2007
+KernelVersion:  2.6.20
+Contact:        "Corentin Chary" <corentincj@iksaif.net>
+Description:
+                Some models like the W1N have a LED display that can be
+                used to display several informations.
+                To control the LED display, use the following :
+                    echo 0x0T000DDD > /sys/devices/platform/asus-laptop/
+                where T control the 3 letters display, and DDD the 3 digits display.
+                The DDD table can be found in Documentation/laptops/asus-laptop.txt
+
+What:           /sys/devices/platform/asus-laptop/bluetooth
+Date:           January 2007
+KernelVersion:  2.6.20
+Contact:        "Corentin Chary" <corentincj@iksaif.net>
+Description:
+                Control the bluetooth device. 1 means on, 0 means off.
+                This may control the led, the device or both.
+Users:          Lapsus
+
+What:           /sys/devices/platform/asus-laptop/wlan
+Date:           January 2007
+KernelVersion:  2.6.20
+Contact:        "Corentin Chary" <corentincj@iksaif.net>
+Description:
+                Control the bluetooth device. 1 means on, 0 means off.
+                This may control the led, the device or both.
+Users:          Lapsus
diff --git a/Documentation/ABI/testing/sysfs-platform-eeepc-laptop b/Documentation/ABI/testing/sysfs-platform-eeepc-laptop
new file mode 100644
index 000000000000..7445dfb321b5
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-eeepc-laptop
@@ -0,0 +1,50 @@
+What:           /sys/devices/platform/eeepc-laptop/disp
+Date:           May 2008
+KernelVersion:  2.6.26
+Contact:        "Corentin Chary" <corentincj@iksaif.net>
+Description:
+                This file allows display switching.
+                - 1 = LCD
+                - 2 = CRT
+                - 3 = LCD+CRT
+                If you run X11, you should use xrandr instead.
+
+What:           /sys/devices/platform/eeepc-laptop/camera
+Date:           May 2008
+KernelVersion:  2.6.26
+Contact:        "Corentin Chary" <corentincj@iksaif.net>
+Description:
+                Control the camera. 1 means on, 0 means off.
+
+What:           /sys/devices/platform/eeepc-laptop/cardr
+Date:           May 2008
+KernelVersion:  2.6.26
+Contact:        "Corentin Chary" <corentincj@iksaif.net>
+Description:
+                Control the card reader. 1 means on, 0 means off.
+
+What:           /sys/devices/platform/eeepc-laptop/cpufv
+Date:           Jun 2009
+KernelVersion:  2.6.31
+Contact:        "Corentin Chary" <corentincj@iksaif.net>
+Description:
+                Change CPU clock configuration.
+                On the Eee PC 1000H there are three available clock configuration:
+                    * 0 -> Super Performance Mode
+                    * 1 -> High Performance Mode
+                    * 2 -> Power Saving Mode
+                On Eee PC 701 there is only 2 available clock configurations.
+                Available configuration are listed in available_cpufv file.
+                Reading this file will show the raw hexadecimal value which
+                is defined as follow:
+                | 8 bit | 8 bit |
+                    |       `---- Current mode
+                    `------------ Availables modes
+                For example, 0x301 means: mode 1 selected, 3 available modes.
+
+What:           /sys/devices/platform/eeepc-laptop/available_cpufv
+Date:           Jun 2009
+KernelVersion:  2.6.31
+Contact:        "Corentin Chary" <corentincj@iksaif.net>
+Description:
+                List available cpufv modes.
diff --git a/Documentation/laptops/asus-laptop.txt b/Documentation/laptops/asus-laptop.txt
new file mode 100644
index 000000000000..c1c5be84e4b1
--- /dev/null
+++ b/Documentation/laptops/asus-laptop.txt
@@ -0,0 +1,258 @@
+Asus Laptop Extras
+
+Version 0.1
+August 6, 2009
+
+Corentin Chary <corentincj@iksaif.net>
+http://acpi4asus.sf.net/
+
+ This driver provides support for extra features of ACPI-compatible ASUS laptops.
+ It may also support some MEDION, JVC or VICTOR laptops (such as MEDION 9675 or
+ VICTOR XP7210 for example). It makes all the extra buttons generate standard
+ ACPI events that go through /proc/acpi/events and input events (like keyboards).
+ On some models adds support for changing the display brightness and output,
+ switching the LCD backlight on and off, and most importantly, allows you to
+ blink those fancy LEDs intended for reporting mail and wireless status.
+
+This driver supercedes the old asus_acpi driver.
+
+Requirements
+------------
+
+  Kernel 2.6.X sources, configured for your computer, with ACPI support.
+  You also need CONFIG_INPUT and CONFIG_ACPI.
+
+Status
+------
+
+ The features currently supported are the following (see below for
+ detailed description):
+
+ - Fn key combinations
+ - Bluetooth enable and disable
+ - Wlan enable and disable
+ - GPS enable and disable
+ - Video output switching
+ - Ambient Light Sensor on and off
+ - LED control
+ - LED Display control
+ - LCD brightness control
+ - LCD on and off
+
+ A compatibility table by model and feature is maintained on the web
+ site, http://acpi4asus.sf.net/.
+
+Usage
+-----
+
+  Try "modprobe asus_acpi". Check your dmesg (simply type dmesg). You should
+  see some lines like this :
+
+      Asus Laptop Extras version 0.42
+        L2D model detected.
+
+  If it is not the output you have on your laptop, send it (and the laptop's
+  DSDT) to me.
+
+  That's all, now, all the events generated by the hotkeys of your laptop
+  should be reported in your /proc/acpi/event entry. You can check with
+  "acpi_listen".
+
+  Hotkeys are also reported as input keys (like keyboards) you can check
+  which key are supported using "xev" under X11.
+
+  You can get informations on the version of your DSDT table by reading the
+  /sys/devices/platform/asus-laptop/infos entry. If you have a question or a
+  bug report to do, please include the output of this entry.
+
+LEDs
+----
+
+  You can modify LEDs be echoing values to /sys/class/leds/asus::*/brightness :
+    echo 1 >  /sys/class/leds/asus::mail/brightness
+  will switch the mail LED on.
+  You can also know if they are on/off by reading their content and use
+  kernel triggers like ide-disk or heartbeat.
+
+Backlight
+---------
+
+  You can control lcd backlight power and brightness with
+  /sys/class/backlight/asus-laptop/. Brightness Values are between 0 and 15.
+
+Wireless devices
+---------------
+
+  You can turn the internal Bluetooth adapter on/off with the bluetooth entry
+  (only on models with Bluetooth). This usually controls the associated LED.
+  Same for Wlan adapter.
+
+Display switching
+-----------------
+
+  Note: the display switching code is currently considered EXPERIMENTAL.
+
+  Switching works for the following models:
+    L3800C
+    A2500H
+    L5800C
+    M5200N
+    W1000N (albeit with some glitches)
+    M6700R
+    A6JC
+    F3J
+
+  Switching doesn't work for the following:
+    M3700N
+    L2X00D (locks the laptop under certain conditions)
+
+  To switch the displays, echo values from 0 to 15 to
+  /sys/devices/platform/asus-laptop/display. The significance of those values
+  is as follows:
+
+  +-------+-----+-----+-----+-----+-----+
+  | Bin   | Val | DVI | TV  | CRT | LCD |
+  +-------+-----+-----+-----+-----+-----+
+  + 0000  +   0 +     +     +     +     +
+  +-------+-----+-----+-----+-----+-----+
+  + 0001  +   1 +     +     +     +  X  +
+  +-------+-----+-----+-----+-----+-----+
+  + 0010  +   2 +     +     +  X  +     +
+  +-------+-----+-----+-----+-----+-----+
+  + 0011  +   3 +     +     +  X  +  X  +
+  +-------+-----+-----+-----+-----+-----+
+  + 0100  +   4 +     +  X  +     +     +
+  +-------+-----+-----+-----+-----+-----+
+  + 0101  +   5 +     +  X  +     + X   +
+  +-------+-----+-----+-----+-----+-----+
+  + 0110  +   6 +     +  X  +  X  +     +
+  +-------+-----+-----+-----+-----+-----+
+  + 0111  +   7 +     +  X  +  X  +  X  +
+  +-------+-----+-----+-----+-----+-----+
+  + 1000  +   8 +  X  +     +     +     +
+  +-------+-----+-----+-----+-----+-----+
+  + 1001  +   9 +  X  +     +     +  X  +
+  +-------+-----+-----+-----+-----+-----+
+  + 1010  +  10 +  X  +     +  X  +     +
+  +-------+-----+-----+-----+-----+-----+
+  + 1011  +  11 +  X  +     +  X  +  X  +
+  +-------+-----+-----+-----+-----+-----+
+  + 1100  +  12 +  X  +  X  +     +     +
+  +-------+-----+-----+-----+-----+-----+
+  + 1101  +  13 +  X  +  X  +     +  X  +
+  +-------+-----+-----+-----+-----+-----+
+  + 1110  +  14 +  X  +  X  +  X  +     +
+  +-------+-----+-----+-----+-----+-----+
+  + 1111  +  15 +  X  +  X  +  X  +  X  +
+  +-------+-----+-----+-----+-----+-----+
+
+  In most cases, the appropriate displays must be plugged in for the above
+  combinations to work. TV-Out may need to be initialized at boot time.
+
+  Debugging:
+  1) Check whether the Fn+F8 key:
+     a) does not lock the laptop (try disabling CONFIG_X86_UP_APIC or boot with
+        noapic / nolapic if it does)
+     b) generates events (0x6n, where n is the value corresponding to the
+        configuration above)
+     c) actually works
+     Record the disp value at every configuration.
+  2) Echo values from 0 to 15 to /sys/devices/platform/asus-laptop/display.
+     Record its value, note any change. If nothing changes, try a broader range,
+     up to 65535.
+  3) Send ANY output (both positive and negative reports are needed, unless your
+     machine is already listed above) to the acpi4asus-user mailing list.
+
+  Note: on some machines (e.g. L3C), after the module has been loaded, only 0x6n
+  events are generated and no actual switching occurs. In such a case, a line
+  like:
+
+    echo $((10#$arg-60)) > /sys/devices/platform/asus-laptop/display
+
+  will usually do the trick ($arg is the 0000006n-like event passed to acpid).
+
+  Note: there is currently no reliable way to read display status on xxN
+  (Centrino) models.
+
+LED display
+-----------
+
+  Some models like the W1N have a LED display that can be used to display
+  several informations.
+
+  LED display works for the following models:
+    W1000N
+    W1J
+
+  To control the LED display, use the following :
+
+    echo 0x0T000DDD > /sys/devices/platform/asus-laptop/
+
+  where T control the 3 letters display, and DDD the 3 digits display,
+  according to the tables below.
+
+         DDD (digits)
+         000 to 999 = display digits
+         AAA        = ---
+         BBB to FFF = turn-off
+
+         T  (type)
+         0 = off
+         1 = dvd
+         2 = vcd
+         3 = mp3
+         4 = cd
+         5 = tv
+         6 = cpu
+         7 = vol
+
+  For example "echo 0x01000001 >/sys/devices/platform/asus-laptop/ledd"
+  would display "DVD001".
+
+Driver options:
+---------------
+
+ Options can be passed to the asus-laptop driver using the standard
+ module argument syntax (<param>=<value> when passing the option to the
+ module or asus-laptop.<param>=<value> on the kernel boot line when
+ asus-laptop is statically linked into the kernel).
+
+             wapf: WAPF defines the behavior of the Fn+Fx wlan key
+                   The significance of values is yet to be found, but
+                   most of the time:
+                   - 0x0 should do nothing
+                   - 0x1 should allow to control the device with Fn+Fx key.
+                   - 0x4 should send an ACPI event (0x88) while pressing the Fn+Fx key
+                   - 0x5 like 0x1 or 0x4
+
+ The default value is 0x1.
+
+Unsupported models
+------------------
+
+ These models will never be supported by this module, as they use a completely
+ different mechanism to handle LEDs and extra stuff (meaning we have no clue
+ how it works):
+
+ - ASUS A1300 (A1B), A1370D
+ - ASUS L7300G
+ - ASUS L8400
+
+Patches, Errors, Questions:
+--------------------------
+
+ I appreciate any success or failure
+ reports, especially if they add to or correct the compatibility table.
+ Please include the following information in your report:
+
+ - Asus model name
+ - a copy of your ACPI tables, using the "acpidump" utility
+ - a copy of /sys/devices/platform/asus-laptop/infos
+ - which driver features work and which don't
+ - the observed behavior of non-working features
+
+ Any other comments or patches are also more than welcome.
+
+ acpi4asus-user@lists.sourceforge.net
+ http://sourceforge.net/projects/acpi4asus
+
diff --git a/Documentation/leds-class.txt b/Documentation/leds-class.txt
index 6399557cdab3..8fd5ca2ae32d 100644
--- a/Documentation/leds-class.txt
+++ b/Documentation/leds-class.txt
@@ -1,3 +1,4 @@
+
 LED handling under Linux
 ========================
 
@@ -5,10 +6,10 @@ If you're reading this and thinking about keyboard leds, these are
 handled by the input subsystem and the led class is *not* needed.
 
 In its simplest form, the LED class just allows control of LEDs from
-userspace. LEDs appear in /sys/class/leds/. The brightness file will
-set the brightness of the LED (taking a value 0-255). Most LEDs don't
-have hardware brightness support so will just be turned on for non-zero
-brightness settings.
+userspace. LEDs appear in /sys/class/leds/. The maximum brightness of the
+LED is defined in max_brightness file. The brightness file will set the brightness
+of the LED (taking a value 0-max_brightness). Most LEDs don't have hardware
+brightness support so will just be turned on for non-zero brightness settings.
 
 The class also introduces the optional concept of an LED trigger. A trigger
 is a kernel based source of led events. Triggers can either be simple or