[PATCH 10/13] drm/dp: Enable backlight control using luminance

[Murthy, Arun R]

> > > Add flag to enable brightness control via luminance value when
> > > enabling edp backlight.
> > >
> > > Signed-off-by: Suraj Kandpal <suraj.kandpal at intel.com>
> > > ---
> > >  drivers/gpu/drm/display/drm_dp_helper.c | 3 +++
> > >  1 file changed, 3 insertions(+)
> > >
> > > diff --git a/drivers/gpu/drm/display/drm_dp_helper.c
> > > b/drivers/gpu/drm/display/drm_dp_helper.c
> > > index 0421b2ed9bd4..4e2caba8311a 100644
> > > --- a/drivers/gpu/drm/display/drm_dp_helper.c
> > > +++ b/drivers/gpu/drm/display/drm_dp_helper.c
> > > @@ -4030,6 +4030,9 @@ int drm_edp_backlight_enable(struct
> > drm_dp_aux
> > > *aux, const struct drm_edp_backli
> > >  	else
> > >  		dpcd_buf = DP_EDP_BACKLIGHT_CONTROL_MODE_PWM;
> > >
> > > +	if (bl->luminance_set)
> > > +		dpcd_buf |=
> > DP_EDP_PANEL_LUMINANCE_CONTROL_ENABLE;
> > Can the backlight control by luminance be used along with PWM or AUX ctl?
> >
> 
> It does work.
> 
Reviewed-by: Arun R Murthy <arun.r.murthy at intel.com>

Thanks and Regards,
Arun R Murthy
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