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[v3,0/6] hwmon: pwm-fan: switch regulator dynamically

Message ID 20220517142620.1523143-1-alexander.stein@ew.tq-group.com
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Series hwmon: pwm-fan: switch regulator dynamically | expand

Message

Alexander Stein May 17, 2022, 2:26 p.m. UTC 
Hello everyone,

this is a new version for supporting switching off the pwm-fan regulator.
This time it is split into several smaller patches for ease of review.
Some organizational changes are inspired/copied by/from pwm_bl.

One big drawback form v2 was that there was no distinction bewteen when
PWM duty == 0:
* keep PWM on inactive level enabled (regulator as well)
* disable PWM and regulator

This is accomplished by using HWMON_PWM_ENABLE attribute. Documentation is
added accordingly.

Best regards,
Alexander

Alexander Stein (6):
  hwmon: pwm-fan: Refactor fan power on/off
  hwmon: pwm-fan: Simplify enable/disable check
  hwmon: pwm-fan: Dynamically switch off regulator if PWM duty is 0
  hwmon: pwm-fan: Remove internal duplicated pwm_state
  hwmon: pwm-fan: Move PWM enable into separate function
  hwmon: pwm-fan: Add hwmon_pwm_enable attribute

 Documentation/hwmon/pwm-fan.rst |  10 ++
 drivers/hwmon/pwm-fan.c         | 263 ++++++++++++++++++++++----------
 2 files changed, 191 insertions(+), 82 deletions(-)