diff options
| author | Tomer Maimon <tmaimon77@gmail.com> | 2018-07-04 02:23:26 +0300 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2018-07-09 06:08:13 +0300 |
| commit | f1fd4a4db777030a2542701fb0d3a261d4472d6d (patch) | |
| tree | d21f458b1efa180252bf8411e31171e4ba7e6e2f /Documentation/hwmon/npcm750-pwm-fan | |
| parent | 68dde6cae6e523dfec8ec097af2c41680fb766c6 (diff) | |
| download | linux-f1fd4a4db777030a2542701fb0d3a261d4472d6d.tar.xz | |
hwmon: Add NPCM7xx PWM and Fan driver
Add Nuvoton BMC NPCM750/730/715/705 Pulse Width Modulation (PWM)
and Fan tacho driver.
The Nuvoton BMC NPCM750/730/715/705 supports 8 PWM controller outputs
and 16 Fan controller inputs.
The driver provides a sysfs entries through which the user can
configure the duty-cycle value from 0(off) and 255(full speed)
and read the fan tacho rpm value.
Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon/npcm750-pwm-fan')
| -rw-r--r-- | Documentation/hwmon/npcm750-pwm-fan | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/Documentation/hwmon/npcm750-pwm-fan b/Documentation/hwmon/npcm750-pwm-fan new file mode 100644 index 000000000000..6156ef7398e6 --- /dev/null +++ b/Documentation/hwmon/npcm750-pwm-fan @@ -0,0 +1,22 @@ +Kernel driver npcm750-pwm-fan +============================= + +Supported chips: + NUVOTON NPCM750/730/715/705 + +Authors: + <tomer.maimon@nuvoton.com> + +Description: +------------ +This driver implements support for NUVOTON NPCM7XX PWM and Fan Tacho +controller. The PWM controller supports up to 8 PWM outputs. The Fan tacho +controller supports up to 16 tachometer inputs. + +The driver provides the following sensor accesses in sysfs: + +fanX_input ro provide current fan rotation value in RPM as reported + by the fan to the device. + +pwmX rw get or set PWM fan control value. This is an integer + value between 0(off) and 255(full speed). |