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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-31 20:40:50 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-31 20:40:50 -0700
commitdd9cd6d4351076c78bb8c0f9146d1904b481fdbb (patch)
treed633c460e2232def1a59b0e6f6c00711d835d911 /Documentation
parent128a2bcf9dddeb8e79a4ba55bf191533f70f39ce (diff)
parent5cccf4a1a258ea5bff20e8440deb3dfcf032b04a (diff)
Merge branch 'release' of git://lm-sensors.org/kernel/mhoffman/hwmon-2.6
* 'release' of git://lm-sensors.org/kernel/mhoffman/hwmon-2.6: hwmon: fscher read control bugfix hwmon: (adm1031) Fix broken links in documentation hwmon: make abituguru3_read_increment_offset() static hwmon: Fix regression caused by typo in lm90.c hwmon: (applesmc) add temperature sensors set for Macbook hwmon: fscher control update bugfix hwmon: fix dme1737 temp fault attribute hwmon: Add missing __devexit tags in various drivers hwmon: clean up duplicate includes hwmon: fix lm78 detection regression hwmon: fix array overruns in lm93.c hwmon: add support for THMC50 and ADM1022
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/hwmon/adm10314
-rw-r--r--Documentation/hwmon/thmc5074
2 files changed, 76 insertions, 2 deletions
diff --git a/Documentation/hwmon/adm1031 b/Documentation/hwmon/adm1031
index 130a38382b9..be92a77da1d 100644
--- a/Documentation/hwmon/adm1031
+++ b/Documentation/hwmon/adm1031
@@ -6,13 +6,13 @@ Supported chips:
Prefix: 'adm1030'
Addresses scanned: I2C 0x2c to 0x2e
Datasheet: Publicly available at the Analog Devices website
- http://products.analog.com/products/info.asp?product=ADM1030
+ http://www.analog.com/en/prod/0%2C2877%2CADM1030%2C00.html
* Analog Devices ADM1031
Prefix: 'adm1031'
Addresses scanned: I2C 0x2c to 0x2e
Datasheet: Publicly available at the Analog Devices website
- http://products.analog.com/products/info.asp?product=ADM1031
+ http://www.analog.com/en/prod/0%2C2877%2CADM1031%2C00.html
Authors:
Alexandre d'Alton <alex@alexdalton.org>
diff --git a/Documentation/hwmon/thmc50 b/Documentation/hwmon/thmc50
new file mode 100644
index 00000000000..9639ca93d55
--- /dev/null
+++ b/Documentation/hwmon/thmc50
@@ -0,0 +1,74 @@
+Kernel driver thmc50
+=====================
+
+Supported chips:
+ * Analog Devices ADM1022
+ Prefix: 'adm1022'
+ Addresses scanned: I2C 0x2c - 0x2e
+ Datasheet: http://www.analog.com/en/prod/0,2877,ADM1022,00.html
+ * Texas Instruments THMC50
+ Prefix: 'thmc50'
+ Addresses scanned: I2C 0x2c - 0x2e
+ Datasheet: http://focus.ti.com/docs/prod/folders/print/thmc50.html
+
+Author: Krzysztof Helt <krzysztof.h1@wp.pl>
+
+This driver was derived from the 2.4 kernel thmc50.c source file.
+
+Credits:
+ thmc50.c (2.4 kernel):
+ Frodo Looijaard <frodol@dds.nl>
+ Philip Edelbrock <phil@netroedge.com>
+
+Module Parameters
+-----------------
+
+* adm1022_temp3: short array
+ List of adapter,address pairs to force chips into ADM1022 mode with
+ second remote temperature. This does not work for original THMC50 chips.
+
+Description
+-----------
+
+The THMC50 implements: an internal temperature sensor, support for an
+external diode-type temperature sensor (compatible w/ the diode sensor inside
+many processors), and a controllable fan/analog_out DAC. For the temperature
+sensors, limits can be set through the appropriate Overtemperature Shutdown
+register and Hysteresis register. Each value can be set and read to half-degree
+accuracy. An alarm is issued (usually to a connected LM78) when the
+temperature gets higher then the Overtemperature Shutdown value; it stays on
+until the temperature falls below the Hysteresis value. All temperatures are in
+degrees Celsius, and are guaranteed within a range of -55 to +125 degrees.
+
+The THMC50 only updates its values each 1.5 seconds; reading it more often
+will do no harm, but will return 'old' values.
+
+The THMC50 is usually used in combination with LM78-like chips, to measure
+the temperature of the processor(s).
+
+The ADM1022 works the same as THMC50 but it is faster (5 Hz instead of
+1 Hz for THMC50). It can be also put in a new mode to handle additional
+remote temperature sensor. The driver use the mode set by BIOS by default.
+
+In case the BIOS is broken and the mode is set incorrectly, you can force
+the mode with additional remote temperature with adm1022_temp3 parameter.
+A typical symptom of wrong setting is a fan forced to full speed.
+
+Driver Features
+---------------
+
+The driver provides up to three temperatures:
+
+temp1 -- internal
+temp2 -- remote
+temp3 -- 2nd remote only for ADM1022
+
+pwm1 -- fan speed (0 = stop, 255 = full)
+pwm1_mode -- always 0 (DC mode)
+
+The value of 0 for pwm1 also forces FAN_OFF signal from the chip,
+so it stops fans even if the value 0 into the ANALOG_OUT register does not.
+
+The driver was tested on Compaq AP550 with two ADM1022 chips (one works
+in the temp3 mode), five temperature readings and two fans.
+