[PATCH 1/2] backlight: pwm_bl: configure pwm only once per backlight toggle

[Daniel Thompson]

On Mon, Jan 09, 2023 at 09:47:57PM +0100, Uwe Kleine-König wrote:
> When the function pwm_backlight_update_status() was called with
> brightness > 0, pwm_get_state() was called twice (once directly and once
> in compute_duty_cycle). Also pwm_apply_state() was called twice (once in
> pwm_backlight_power_on() and once directly).
>
> Optimize this to do both calls only once.
>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>

This will reverse the order in which the regulator is toggled versus the
PWM starting/stopping. It would be nice to that in the description.

However I can't see why it would be a problem (since both remain in the
same place relative to the sleeps) so:
Reviewed-by: Daniel Thompson <daniel.thompson at linaro.org>


Daniel.