hwmon: pwm-fan: Refactor pwm_fan_probe

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Use platform_irq_count to determine the number of fan tachometer inputs
configured in the device tree. At this stage we support either 0 or 1
inputs.

Once we have this information we only need to read the
pulses-per-revolution value if a fan tachometer is actually configured
via an IRQ value.

Also add a debug print of the IRQ number and the pulses-per-revolution
value to aid in investigating issues.

Signed-off-by: Paul Barker <pbarker@konsulko.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20201126174408.755-2-pbarker@konsulko.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

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Paul Barker 2020-11-26 17:44:07 +00:00 • committed by Guenter Roeck

parent 02c155cb32

commit b5fcb8a401

1 changed files with 33 additions and 17 deletions

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drivers/hwmon/pwm-fan.c

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