diff options
| author |   Paul Barker <pbarker@konsulko.com> | 2020-12-12 19:50:08 +0000 |
|---|---|---|
| committer |   Guenter Roeck <linux@roeck-us.net> | 2021-01-27 17:44:18 -0800 |
| commit | f0dc7cb6b4c9cd24a69f80423f6d7a03825b72e4 (patch) | |
| tree | 529d810b651697e960408784d85221b9d2bba88f /drivers/hwmon/aspeed-pwm-tacho.c | |
| parent | hwmon: (pwm-fan) Store tach data separately (diff) | |
| download | wireguard-linux-f0dc7cb6b4c9cd24a69f80423f6d7a03825b72e4.tar.xz wireguard-linux-f0dc7cb6b4c9cd24a69f80423f6d7a03825b72e4.zip | |
hwmon: (pwm-fan) Support multiple fan tachometers
The pwm-fan driver is extended to support multiple fan tachometer
signals connected to GPIO inputs. This is intended to support the case
where a single PWM output signal is routed to multiple fans, each of
which have a tachometer output connected back to a GPIO pin.
The number of fan tachometer inputs is determined by the number of
interrupt sources configured for the pwm-fan device. The number of
pulses-per-revolution entries should match the number of interrupt
sources so that each input has a value assigned.
The fan tachometer measurements are exposed as sysfs files fan1_input,
fan2_input, etc up to the number of configured inputs.
Signed-off-by: Paul Barker <pbarker@konsulko.com>
Link: https://lore.kernel.org/r/20201212195008.6036-3-pbarker@konsulko.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/aspeed-pwm-tacho.c')
0 files changed, 0 insertions, 0 deletions