pwm: sifive: Ensure the clk is enabled exactly once per running PWM

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.apply() assumes the clk to be for a given PWM iff the PWM is enabled.
So make sure this is the case when .probe() completes. And in .remove()
disable the according number of times.

This fixes a clk enable/disable imbalance, if some PWMs are already running
at probe time.

Fixes: 9e37a53eb0 (pwm: sifive: Add a driver for SiFive SoC PWM)
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Tested-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

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Uwe Kleine-König 2022-07-21 12:31:28 +02:00 • committed by Thierry Reding

parent 1695b421e1

commit ace41d7564

1 changed files with 37 additions and 9 deletions

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drivers/pwm/pwm-sifive.c

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