Most but not all PWMs drive the PWM pin to its inactive state when
disabled. Rely on the lowlevel PWM implementation to implement
duty_cycle = 0 in an energy efficient way and don't disable the PWM.
This fixes backlight disabling e.g. on i.MX6 when an inverted PWM is
used.
Signed-off-by: Uwe Kleine-König <u.kleine-koe...@pengutronix.de>
---
drivers/video/backlight/pwm_bl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index 0509fecd5715..7bdc5d570a12 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -109,7 +109,7 @@ static int pwm_backlight_update_status(struct
backlight_device *bl)
pwm_backlight_power_off(pb);
pwm_get_state(pb->pwm, &state);
- state.enabled = false;
+ state.enabled = true;
state.duty_cycle = 0;
pwm_apply_state(pb->pwm, &state);
}
--
2.39.0
