| Message ID | 20160930070259.5710-3-peter.ujfalusi@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, 30 Sep 2016, Peter Ujfalusi wrote: > If the pwm is not enabled the backlight initially should not be enabled > either if we have booted with DT and there is a phandle pointing to the > backlight node. > > The patch extends the checks to decide if we should keep the backlight off > initially. > > Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> > --- > drivers/video/backlight/pwm_bl.c | 4 ++++ > 1 file changed, 4 insertions(+) Makes sense to me. I'm going to apply this until someone screams at me. > diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c > index 9bc4715bf116..e4326bbf807f 100644 > --- a/drivers/video/backlight/pwm_bl.c > +++ b/drivers/video/backlight/pwm_bl.c > @@ -223,6 +223,10 @@ static int pwm_backlight_initial_power_state(const struct pwm_bl_data *pb) > if (!regulator_is_enabled(pb->power_supply)) > return FB_BLANK_POWERDOWN; > > + /* The pwm is disabled, keep it like this */ > + if (!pwm_is_enabled(pb->pwm)) > + return FB_BLANK_POWERDOWN; > + > return FB_BLANK_UNBLANK; > } >
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index 9bc4715bf116..e4326bbf807f 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -223,6 +223,10 @@ static int pwm_backlight_initial_power_state(const struct pwm_bl_data *pb) if (!regulator_is_enabled(pb->power_supply)) return FB_BLANK_POWERDOWN; + /* The pwm is disabled, keep it like this */ + if (!pwm_is_enabled(pb->pwm)) + return FB_BLANK_POWERDOWN; + return FB_BLANK_UNBLANK; }
If the pwm is not enabled the backlight initially should not be enabled either if we have booted with DT and there is a phandle pointing to the backlight node. The patch extends the checks to decide if we should keep the backlight off initially. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> --- drivers/video/backlight/pwm_bl.c | 4 ++++ 1 file changed, 4 insertions(+)