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+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://www.ti.com/
+Author: Krzysztof Helt <krzysztof.h1@wp.pl>
+This driver was derived from the 2.4 kernel thmc50.c source file.
+ 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.
+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.