8 files changed, 222 insertions, 92 deletions

diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index 591e94448e63..2a4d77946c7d 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -483,3 +483,10 @@ Why:	With the recent innovations in CPU hardware acceleration technologies
 Who:    Alok N Kataria <akataria@vmware.com>
 
 ----------------------------
+
+What:   adt7473 hardware monitoring driver
+When:   February 2010
+Why:    Obsoleted by the adt7475 driver.
+Who:    Jean Delvare <khali@linux-fr.org>
+
+---------------------------
diff --git a/Documentation/hwmon/adt7473 b/Documentation/hwmon/adt7473
index 1cbf671822e2..446612bd1fb9 100644
--- a/Documentation/hwmon/adt7473
+++ b/Documentation/hwmon/adt7473
@@ -9,6 +9,8 @@ Supported chips:
 
 Author: Darrick J. Wong
 
+This driver is depreacted, please use the adt7475 driver instead.
+
 Description
 -----------
 
diff --git a/Documentation/hwmon/adt7475 b/Documentation/hwmon/adt7475
index a2b1abec850e..0502f2b464e1 100644
--- a/Documentation/hwmon/adt7475
+++ b/Documentation/hwmon/adt7475
@@ -1,87 +1,117 @@
-This describes the interface for the ADT7475 driver:
-
-(there are 4 fans, numbered fan1 to fan4):
-
-fanX_input              Read the current speed of the fan (in RPMs)
-fanX_min                Read/write the minimum speed of the fan.  Dropping
-                        below this sets an alarm.
-
-(there are three PWMs, numbered pwm1 to pwm3):
-
-pwmX                    Read/write the current duty cycle of the PWM.  Writes
-                        only have effect when auto mode is turned off (see
-                        below).  Range is 0 - 255.
-
-pwmX_enable             Fan speed control method:
-
-                        0 - No control (fan at full speed)
-                        1 - Manual fan speed control (using pwm[1-*])
-                        2 - Automatic fan speed control
-
-pwmX_auto_channels_temp Select which channels affect this PWM
-
-                        1 - TEMP1 controls PWM
-                        2 - TEMP2 controls PWM
-                        4 - TEMP3 controls PWM
-                        6 - TEMP2 and TEMP3 control PWM
-                        7 - All three inputs control PWM
-
-pwmX_freq               Read/write the PWM frequency in Hz. The number
-                        should be one of the following:
-
-                        11 Hz
-                        14 Hz
-                        22 Hz
-                        29 Hz
-                        35 Hz
-                        44 Hz
-                        58 Hz
-                        88 Hz
-
-pwmX_auto_point1_pwm    Read/write the minimum PWM duty cycle in automatic mode
-
-pwmX_auto_point2_pwm    Read/write the maximum PWM duty cycle in automatic mode
-
-(there are three temperature settings numbered temp1 to temp3):
-
-tempX_input             Read the current temperature.  The value is in milli
-                        degrees of Celsius.
-
-tempX_max               Read/write the upper temperature limit - exceeding this
-                        will cause an alarm.
-
-tempX_min               Read/write the lower temperature limit - exceeding this
-                        will cause an alarm.
-
-tempX_offset            Read/write the temperature adjustment offset
-
-tempX_crit              Read/write the THERM limit for remote1.
-
-tempX_crit_hyst         Set the temperature value below crit where the
-                        fans will stay on - this helps drive the temperature
-                        low enough so it doesn't stay near the edge and
-                        cause THERM to keep tripping.
-
-tempX_auto_point1_temp  Read/write the minimum temperature where the fans will
-                        turn on in automatic mode.
-
-tempX_auto_point2_temp  Read/write the maximum temperature over which the fans
-                        will run in automatic mode.  tempX_auto_point1_temp
-                        and tempX_auto_point2_temp together define the
-                        range of automatic control.
-
-tempX_alarm             Read a 1 if the max/min alarm is set
-tempX_fault             Read a 1 if either temp1 or temp3 diode has a fault
-
-(There are two voltage settings, in1 and in2):
-
-inX_input               Read the current voltage on VCC.  Value is in
-                        millivolts.
-
-inX_min                 read/write the minimum voltage limit.
-                        Dropping below this causes an alarm.
-
-inX_max                 read/write the maximum voltage limit.
-                        Exceeding this causes an alarm.
-
-inX_alarm               Read a 1 if the max/min alarm is set.
+Kernel driver adt7475
+=====================
+
+Supported chips:
+  * Analog Devices ADT7473
+    Prefix: 'adt7473'
+    Addresses scanned: I2C 0x2C, 0x2D, 0x2E
+    Datasheet: Publicly available at the On Semiconductors website
+  * Analog Devices ADT7475
+    Prefix: 'adt7475'
+    Addresses scanned: I2C 0x2E
+    Datasheet: Publicly available at the On Semiconductors website
+  * Analog Devices ADT7476
+    Prefix: 'adt7476'
+    Addresses scanned: I2C 0x2C, 0x2D, 0x2E
+    Datasheet: Publicly available at the On Semiconductors website
+  * Analog Devices ADT7490
+    Prefix: 'adt7490'
+    Addresses scanned: I2C 0x2C, 0x2D, 0x2E
+    Datasheet: Publicly available at the On Semiconductors website
+
+Authors:
+        Jordan Crouse
+        Hans de Goede
+        Darrick J. Wong (documentation)
+        Jean Delvare
+
+
+Description
+-----------
+
+This driver implements support for the Analog Devices ADT7473, ADT7475,
+ADT7476 and ADT7490 chip family. The ADT7473 and ADT7475 differ only in
+minor details. The ADT7476 has additional features, including extra voltage
+measurement inputs and VID support. The ADT7490 also has additional
+features, including extra voltage measurement inputs and PECI support. All
+the supported chips will be collectively designed by the name "ADT747x" in
+the rest of this document.
+
+The ADT747x uses the 2-wire interface compatible with the SMBus 2.0
+specification. Using an analog to digital converter it measures three (3)
+temperatures and two (2) or more voltages. It has four (4) 16-bit counters
+for measuring fan speed. There are three (3) PWM outputs that can be used
+to control fan speed.
+
+A sophisticated control system for the PWM outputs is designed into the
+ADT747x that allows fan speed to be adjusted automatically based on any of the
+three temperature sensors. Each PWM output is individually adjustable and
+programmable. Once configured, the ADT747x will adjust the PWM outputs in
+response to the measured temperatures without further host intervention.
+This feature can also be disabled for manual control of the PWM's.
+
+Each of the measured inputs (voltage, temperature, fan speed) has
+corresponding high/low limit values. The ADT747x will signal an ALARM if
+any measured value exceeds either limit.
+
+The ADT747x samples all inputs continuously. The driver will not read
+the registers more often than once every other second. Further,
+configuration data is only read once per minute.
+
+Chip Differences Summary
+------------------------
+
+ADT7473:
+  * 2 voltage inputs
+  * system acoustics optimizations (not implemented)
+
+ADT7475:
+  * 2 voltage inputs
+
+ADT7476:
+  * 5 voltage inputs
+  * VID support
+
+ADT7490:
+  * 6 voltage inputs
+  * 1 Imon input (not implemented)
+  * PECI support (not implemented)
+  * 2 GPIO pins (not implemented)
+  * system acoustics optimizations (not implemented)
+
+Special Features
+----------------
+
+The ADT747x has a 10-bit ADC and can therefore measure temperatures
+with a resolution of 0.25 degree Celsius. Temperature readings can be
+configured either for two's complement format or "Offset 64" format,
+wherein 64 is subtracted from the raw value to get the temperature value.
+
+The datasheet is very detailed and describes a procedure for determining
+an optimal configuration for the automatic PWM control.
+
+Fan Speed Control
+-----------------
+
+The driver exposes two trip points per PWM channel.
+
+point1: Set the PWM speed at the lower temperature bound
+point2: Set the PWM speed at the higher temperature bound
+
+The ADT747x will scale the PWM linearly between the lower and higher PWM
+speed when the temperature is between the two temperature boundaries.
+Temperature boundaries are associated to temperature channels rather than
+PWM outputs, and a given PWM output can be controlled by several temperature
+channels. As a result, the ADT747x may compute more than one PWM value
+for a channel at a given time, in which case the maximum value (fastest
+fan speed) is applied. PWM values range from 0 (off) to 255 (full speed).
+
+Fan speed may be set to maximum when the temperature sensor associated with
+the PWM control exceeds temp#_max.
+
+Notes
+-----
+
+The nVidia binary driver presents an ADT7473 chip via an on-card i2c bus.
+Unfortunately, they fail to set the i2c adapter class, so this driver may
+fail to find the chip until the nvidia driver is patched.
diff --git a/Documentation/hwmon/f71882fg b/Documentation/hwmon/f71882fg
index bee4c30bc1e2..a7952c2bd959 100644
--- a/Documentation/hwmon/f71882fg
+++ b/Documentation/hwmon/f71882fg
@@ -14,6 +14,10 @@ Supported chips:
     Prefix: 'f71882fg'
     Addresses scanned: none, address read from Super I/O config space
     Datasheet: Available from the Fintek website
+  * Fintek F71889FG
+    Prefix: 'f71889fg'
+    Addresses scanned: none, address read from Super I/O config space
+    Datasheet: Should become available on the Fintek website soon
   * Fintek F8000
     Prefix: 'f8000'
     Addresses scanned: none, address read from Super I/O config space
@@ -51,6 +55,12 @@ supported. The right one to use depends on external circuitry on the
 motherboard, so the driver assumes that the BIOS set the method
 properly.
 
+Note that the lowest numbered temperature zone trip point corresponds to
+to the border between the highest and one but highest temperature zones, and
+vica versa. So the temperature zone trip points 1-4 (or 1-2) go from high temp
+to low temp! This is how things are implemented in the IC, and the driver
+mimicks this.
+
 There are 2 modes to specify the speed of the fan, PWM duty cycle (or DC
 voltage) mode, where 0-100% duty cycle (0-100% of 12V) is specified. And RPM
 mode where the actual RPM of the fan (as measured) is controlled and the speed
diff --git a/Documentation/hwmon/it87 b/Documentation/hwmon/it87
index 659315d98e00..f9ba96c0ac4a 100644
--- a/Documentation/hwmon/it87
+++ b/Documentation/hwmon/it87
@@ -86,7 +86,6 @@ The IT8712F and IT8716F additionally feature VID inputs, used to report
 the Vcore voltage of the processor. The early IT8712F have 5 VID pins,
 the IT8716F and late IT8712F have 6. They are shared with other functions
 though, so the functionality may not be available on a given system.
-The driver dumbly assume it is there.
 
 The IT8718F and IT8720F also features VID inputs (up to 8 pins) but the value
 is stored in the Super-I/O configuration space. Due to technical limitations,
diff --git a/Documentation/hwmon/mc13783-adc b/Documentation/hwmon/mc13783-adc
new file mode 100644
index 000000000000..044531a86405
--- /dev/null
+++ b/Documentation/hwmon/mc13783-adc
@@ -0,0 +1,50 @@
+Kernel driver mc13783-adc
+=========================
+
+Supported chips:
+  * Freescale Atlas MC13783
+    Prefix: 'mc13783_adc'
+    Datasheet: http://www.freescale.com/files/rf_if/doc/data_sheet/MC13783.pdf?fsrch=1
+
+Authors:
+    Sascha Hauer <s.hauer@pengutronix.de>
+    Luotao Fu <l.fu@pengutronix.de>
+
+Description
+-----------
+
+The Freescale MC13783 is a Power Management and Audio Circuit. Among
+other things it contains a 10-bit A/D converter. The converter has 16
+channels which can be used in different modes.
+The A/D converter has a resolution of 2.25mV. Channels 0-4 have
+a dedicated meaning with chip internal scaling applied. Channels 5-7
+can be used as general purpose inputs or alternatively in a dedicated
+mode. Channels 12-15 are occupied by the touchscreen if it's active.
+
+Currently the driver only supports channels 2 and 5-15 with no alternative
+modes for channels 5-7.
+
+See this table for the meaning of the different channels and their chip
+internal scaling:
+
+Channel Signal                                          Input Range     Scaling
+-------------------------------------------------------------------------------
+0       Battery Voltage (BATT)                          2.50 - 4.65V    -2.40V
+1       Battery Current (BATT - BATTISNS)               -50 - 50 mV     x20
+2       Application Supply (BP)                         2.50 - 4.65V    -2.40V
+3       Charger Voltage (CHRGRAW)                       0 - 10V /       /5
+                                                        0 - 20V         /10
+4       Charger Current (CHRGISNSP-CHRGISNSN)           -0.25V - 0.25V  x4
+5       General Purpose ADIN5 / Battery Pack Thermistor 0 - 2.30V       No
+6       General Purpose ADIN6 / Backup Voltage (LICELL) 0 - 2.30V /     No /
+                                                        1.50 - 3.50V    -1.20V
+7       General Purpose ADIN7 / UID / Die Temperature   0 - 2.30V /     No /
+                                                        0 - 2.55V /     x0.9 / No
+8       General Purpose ADIN8                           0 - 2.30V       No
+9       General Purpose ADIN9                           0 - 2.30V       No
+10      General Purpose ADIN10                          0 - 2.30V       No
+11      General Purpose ADIN11                          0 - 2.30V       No
+12      General Purpose TSX1 / Touchscreen X-plate 1    0 - 2.30V       No
+13      General Purpose TSX2 / Touchscreen X-plate 2    0 - 2.30V       No
+14      General Purpose TSY1 / Touchscreen Y-plate 1    0 - 2.30V       No
+15      General Purpose TSY2 / Touchscreen Y-plate 2    0 - 2.30V       No
diff --git a/Documentation/hwmon/sysfs-interface b/Documentation/hwmon/sysfs-interface
index 82def883361b..3de6b0bcb147 100644
--- a/Documentation/hwmon/sysfs-interface
+++ b/Documentation/hwmon/sysfs-interface
@@ -225,8 +225,6 @@ pwm[1-*]_auto_point[1-*]_temp_hyst
                 to PWM output channels.
                 RW
 
-OR
-
 temp[1-*]_auto_point[1-*]_pwm
 temp[1-*]_auto_point[1-*]_temp
 temp[1-*]_auto_point[1-*]_temp_hyst
@@ -235,6 +233,15 @@ temp[1-*]_auto_point[1-*]_temp_hyst
                 to temperature channels.
                 RW
 
+There is a third case where trip points are associated to both PWM output
+channels and temperature channels: the PWM values are associated to PWM
+output channels while the temperature values are associated to temperature
+channels. In that case, the result is determined by the mapping between
+temperature inputs and PWM outputs. When several temperature inputs are
+mapped to a given PWM output, this leads to several candidate PWM values.
+The actual result is up to the chip, but in general the highest candidate
+value (fastest fan speed) wins.
+
 
 ****************
 * Temperatures *
diff --git a/Documentation/hwmon/w83627hf b/Documentation/hwmon/w83627hf
index 6ee36dbafd64..44dd2bcc72bd 100644
--- a/Documentation/hwmon/w83627hf
+++ b/Documentation/hwmon/w83627hf
@@ -32,8 +32,6 @@ Authors:
 Module Parameters
 -----------------
 
-* force_addr: int
-  Initialize the ISA address of the sensors
 * force_i2c: int
   Initialize the I2C address of the sensors
 * init: int
@@ -70,3 +68,30 @@ doesn't help, you may just ignore the bogus VID reading with no harm done.
 For further information on this driver see the w83781d driver documentation.
 
 [1] http://www.lm-sensors.org/browser/lm-sensors/trunk/doc/vid
+
+Forcing the address
+-------------------
+
+The driver used to have a module parameter named force_addr, which could
+be used to force the base I/O address of the hardware monitoring block.
+This was meant as a workaround for mainboards with a broken BIOS. This
+module parameter is gone for technical reasons. If you need this feature,
+you can obtain the same result by using the isaset tool (part of
+lm-sensors) before loading the driver:
+
+# Enter the Super I/O config space
+isaset -y -f 0x2e 0x87
+isaset -y -f 0x2e 0x87
+
+# Select the hwmon logical device
+isaset -y 0x2e 0x2f 0x07 0x0b
+
+# Set the base I/O address (to 0x290 in this example)
+isaset -y 0x2e 0x2f 0x60 0x02
+isaset -y 0x2e 0x2f 0x61 0x90
+
+# Exit the Super-I/O config space
+isaset -y -f 0x2e 0xaa
+
+The above sequence assumes a Super-I/O config space at 0x2e/0x2f, but
+0x4e/0x4f is also possible.