Messages in this thread | | | From | Stefan Wahren <> | Subject | [PATCH RFC V2 0/3] hwmon: pwm-fan: Add RPM support | Date | Mon, 25 Feb 2019 16:59:16 +0100 |
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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 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 | 19 +++++ Documentation/hwmon/pwm-fan | 3 + drivers/hwmon/pwm-fan.c | 94 +++++++++++++++++++++- 3 files changed, 115 insertions(+), 1 deletion(-)
-- 2.7.4
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