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Subject[PATCH V3 0/3] hwmon: pwm-fan: Add RPM support
Contrary to the gpio-fan the pwm-fan driver isn't easy to setup
with pwmconfig/fancontrol because of the missing hwmon sysfs entry
for actual revolutions per minute. This series adds this feature.

Changes in V3:
- rename property interrupt-ratio to pulses-per-revolution
to avoid confusion with interrupt binding
- handle error case pulses-per-revolution = 0
- bail out properly in case we are unable to request the irq

Changes in V2:
- address Guenter's comments:
- improve description of interrupts
- use atomic_t to avoid races of the pulse counter
- measure sample time to make rpm more reliable under load
- make sysfs entry fan1_input conditional
- add dt-property to define interrupts per fan revolution
- example for fan with RPM support

Stefan Wahren (3):
dt-bindings: hwmon: Add tachometer interrupt to pwm-fan
Documentation: pwm-fan: Add description for RPM support
hwmon: pwm-fan: Add RPM support via external interrupt

.../devicetree/bindings/hwmon/pwm-fan.txt | 22 ++++-
Documentation/hwmon/pwm-fan | 3 +
drivers/hwmon/pwm-fan.c | 100 ++++++++++++++++++++-
3 files changed, 123 insertions(+), 2 deletions(-)


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