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authorKevin Lo <kevlo@kevlo.org>2007-11-23 02:31:52 +0100
committerMark M. Hoffman <mhoffman@lightlink.com>2008-02-08 02:39:40 +0100
commit85f03bccd6e0e2ac6ccf017d4bcd5d74bb87a671 (patch)
tree2e71c1f5edbbb9e78237da39f208514656c873a1 /Documentation/hwmon
parenthwmon: (adt7470) Replace power-of-two test (diff)
downloadlinux-85f03bccd6e0e2ac6ccf017d4bcd5d74bb87a671.tar.xz
linux-85f03bccd6e0e2ac6ccf017d4bcd5d74bb87a671.zip
hwmon: Add support for Winbond W83L786NG/NR
Signed-off-by: Kevin Lo <kevlo@kevlo.org> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
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+Kernel driver w83l786ng
+=====================
+
+Supported chips:
+ * Winbond W83L786NG/W83L786NR
+ Prefix: 'w83l786ng'
+ Addresses scanned: I2C 0x2e - 0x2f
+ Datasheet: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83L786NRNG09.pdf
+
+Author: Kevin Lo <kevlo@kevlo.org>
+
+
+Module Parameters
+-----------------
+
+* reset boolean
+ (default 0)
+ Use 'reset=1' to reset the chip (via index 0x40, bit 7). The default
+ behavior is no chip reset to preserve BIOS settings
+
+
+Description
+-----------
+
+This driver implements support for Winbond W83L786NG/W83L786NR chips.
+
+The driver implements two temperature sensors, two fan rotation speed
+sensors, and three voltage sensors.
+
+Temperatures are measured in degrees Celsius and measurement resolution is 1
+degC for temp1 and temp2.
+
+Fan rotation speeds are reported in RPM (rotations per minute). Fan readings
+readings can be divided by a programmable divider (1, 2, 4, 8, 16, 32, 64
+or 128 for fan 1/2) to give the readings more range or accuracy.
+
+Voltage sensors (also known as IN sensors) report their values in millivolts.
+An alarm is triggered if the voltage has crossed a programmable minimum
+or maximum limit.
+
+/sys files
+----------
+
+pwm[1-2] - this file stores PWM duty cycle or DC value (fan speed) in range:
+ 0 (stop) to 255 (full)
+pwm[1-2]_enable - this file controls mode of fan/temperature control:
+ * 0 Manual Mode
+ * 1 Thermal Cruise
+ * 2 Smart Fan II
+ * 4 FAN_SET
+pwm[1-2]_mode - Select PWM of DC mode
+ * 0 DC
+ * 1 PWM
+tolerance[1-2] - Value in degrees of Celsius (degC) for +- T