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| author | Marius Zachmann <mail@mariuszachmann.de> | 2020-07-21 11:54:47 +0300 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2020-07-24 17:44:57 +0300 |
| commit | fa4dac3e1bf7fadb4c5e098dcd721eafe3cd80c5 (patch) | |
| tree | 591905266109c56f8949c00f09ea5bb756bb7163 /Documentation/hwmon | |
| parent | e4922176e1669f174e101d321d76fdc1a134f7ac (diff) | |
| download | linux-fa4dac3e1bf7fadb4c5e098dcd721eafe3cd80c5.tar.xz | |
hwmon: (corsair-cpro) add reading pwm values
This adds the possibility for reading pwm values.
These can not be read if the device is controlled via
fan_target or a fan curve and will return an error in
this case. Since an error is expected, this adds some
rudimentary error handling.
Changes:
- add CTL_GET_FAN_PWM and use it via get_data
- pwm returns -ENODATA if the device returns error 0x12
- fan_target now returns -ENODATA when the driver is
started or a pwm value is set.
- add ccp_get_errno to determine errno from device error.
- get_data now has a parameter to determine whether
to read one or two bytes of data.
- update documentation
- fix missing surname in MAINTAINERS
Signed-off-by: Marius Zachmann <mail@mariuszachmann.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon')
| -rw-r--r-- | Documentation/hwmon/corsair-cpro.rst | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/Documentation/hwmon/corsair-cpro.rst b/Documentation/hwmon/corsair-cpro.rst index 78820156f07d..751f95476b57 100644 --- a/Documentation/hwmon/corsair-cpro.rst +++ b/Documentation/hwmon/corsair-cpro.rst @@ -35,8 +35,7 @@ fan[1-6]_input Connected fan rpm. fan[1-6]_label Shows fan type as detected by the device. fan[1-6]_target Sets fan speed target rpm. When reading, it reports the last value if it was set by the driver. - Otherwise returns 0. -pwm[1-6] Sets the fan speed. Values from 0-255. - When reading, it reports the last value if it was set by the driver. - Otherwise returns 0. + Otherwise returns an error. +pwm[1-6] Sets the fan speed. Values from 0-255. Can only be read if pwm + was set directly. ======================= ===================================================================== |