| Kevin Lo | 85f03bc | 2007-11-23 09:31:52 +0800 | [diff] [blame] | 1 | Kernel driver w83l786ng |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 2 | ======================= |
| Kevin Lo | 85f03bc | 2007-11-23 09:31:52 +0800 | [diff] [blame] | 3 | |
| 4 | Supported chips: |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 5 | |
| Kevin Lo | 85f03bc | 2007-11-23 09:31:52 +0800 | [diff] [blame] | 6 | * Winbond W83L786NG/W83L786NR |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 7 | |
| Kevin Lo | 85f03bc | 2007-11-23 09:31:52 +0800 | [diff] [blame] | 8 | Prefix: 'w83l786ng' |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 9 | |
| Kevin Lo | 85f03bc | 2007-11-23 09:31:52 +0800 | [diff] [blame] | 10 | Addresses scanned: I2C 0x2e - 0x2f |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 11 | |
| Kevin Lo | 85f03bc | 2007-11-23 09:31:52 +0800 | [diff] [blame] | 12 | Datasheet: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83L786NRNG09.pdf |
| 13 | |
| 14 | Author: Kevin Lo <kevlo@kevlo.org> |
| 15 | |
| 16 | |
| 17 | Module Parameters |
| 18 | ----------------- |
| 19 | |
| 20 | * reset boolean |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 21 | (default 0) |
| 22 | |
| 23 | Use 'reset=1' to reset the chip (via index 0x40, bit 7). The default |
| 24 | behavior is no chip reset to preserve BIOS settings |
| Kevin Lo | 85f03bc | 2007-11-23 09:31:52 +0800 | [diff] [blame] | 25 | |
| 26 | |
| 27 | Description |
| 28 | ----------- |
| 29 | |
| 30 | This driver implements support for Winbond W83L786NG/W83L786NR chips. |
| 31 | |
| 32 | The driver implements two temperature sensors, two fan rotation speed |
| 33 | sensors, and three voltage sensors. |
| 34 | |
| 35 | Temperatures are measured in degrees Celsius and measurement resolution is 1 |
| 36 | degC for temp1 and temp2. |
| 37 | |
| 38 | Fan rotation speeds are reported in RPM (rotations per minute). Fan readings |
| 39 | readings can be divided by a programmable divider (1, 2, 4, 8, 16, 32, 64 |
| 40 | or 128 for fan 1/2) to give the readings more range or accuracy. |
| 41 | |
| 42 | Voltage sensors (also known as IN sensors) report their values in millivolts. |
| 43 | An alarm is triggered if the voltage has crossed a programmable minimum |
| 44 | or maximum limit. |
| 45 | |
| 46 | /sys files |
| 47 | ---------- |
| 48 | |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 49 | pwm[1-2] |
| 50 | - this file stores PWM duty cycle or DC value (fan speed) in range: |
| 51 | |
| 52 | 0 (stop) to 255 (full) |
| 53 | pwm[1-2]_enable |
| 54 | - this file controls mode of fan/temperature control: |
| 55 | |
| 56 | * 0 Manual Mode |
| 57 | * 1 Thermal Cruise |
| 58 | * 2 Smart Fan II |
| 59 | * 4 FAN_SET |
| 60 | pwm[1-2]_mode |
| 61 | - Select PWM of DC mode |
| 62 | |
| 63 | * 0 DC |
| 64 | * 1 PWM |
| 65 | tolerance[1-2] |
| 66 | - Value in degrees of Celsius (degC) for +- T |