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1 | Kernel driver w83l786ng | ||
2 | ===================== | ||
3 | |||
4 | Supported chips: | ||
5 | * Winbond W83L786NG/W83L786NR | ||
6 | Prefix: 'w83l786ng' | ||
7 | Addresses scanned: I2C 0x2e - 0x2f | ||
8 | Datasheet: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83L786NRNG09.pdf | ||
9 | |||
10 | Author: Kevin Lo <kevlo@kevlo.org> | ||
11 | |||
12 | |||
13 | Module Parameters | ||
14 | ----------------- | ||
15 | |||
16 | * reset boolean | ||
17 | (default 0) | ||
18 | Use 'reset=1' to reset the chip (via index 0x40, bit 7). The default | ||
19 | behavior is no chip reset to preserve BIOS settings | ||
20 | |||
21 | |||
22 | Description | ||
23 | ----------- | ||
24 | |||
25 | This driver implements support for Winbond W83L786NG/W83L786NR chips. | ||
26 | |||
27 | The driver implements two temperature sensors, two fan rotation speed | ||
28 | sensors, and three voltage sensors. | ||
29 | |||
30 | Temperatures are measured in degrees Celsius and measurement resolution is 1 | ||
31 | degC for temp1 and temp2. | ||
32 | |||
33 | Fan rotation speeds are reported in RPM (rotations per minute). Fan readings | ||
34 | readings can be divided by a programmable divider (1, 2, 4, 8, 16, 32, 64 | ||
35 | or 128 for fan 1/2) to give the readings more range or accuracy. | ||
36 | |||
37 | Voltage sensors (also known as IN sensors) report their values in millivolts. | ||
38 | An alarm is triggered if the voltage has crossed a programmable minimum | ||
39 | or maximum limit. | ||
40 | |||
41 | /sys files | ||
42 | ---------- | ||
43 | |||
44 | pwm[1-2] - this file stores PWM duty cycle or DC value (fan speed) in range: | ||
45 | 0 (stop) to 255 (full) | ||
46 | pwm[1-2]_enable - this file controls mode of fan/temperature control: | ||
47 | * 0 Manual Mode | ||
48 | * 1 Thermal Cruise | ||
49 | * 2 Smart Fan II | ||
50 | * 4 FAN_SET | ||
51 | pwm[1-2]_mode - Select PWM of DC mode | ||
52 | * 0 DC | ||
53 | * 1 PWM | ||
54 | tolerance[1-2] - Value in degrees of Celsius (degC) for +- T | ||