[PATCH v3 11/13] drm/i915/backlight: Use drm helper to initialize edp backlight

[Murthy, Arun R]

> > > -----Original Message-----
> > > From: Kandpal, Suraj <suraj.kandpal at intel.com>
> > > Sent: Friday, June 20, 2025 12:05 PM
> > > To: intel-xe at lists.freedesktop.org; intel-gfx at lists.freedesktop.org;
> > > dri- devel at lists.freedesktop.org; nouveau at lists.freedesktop.org
> > > Cc: Murthy, Arun R <arun.r.murthy at intel.com>; Kandpal, Suraj
> > > <suraj.kandpal at intel.com>
> > > Subject: [PATCH v3 11/13] drm/i915/backlight: Use drm helper to
> > > initialize edp backlight
> > >
> > > Now that drm_edp_backlight init has been modified to take into
> > > account the setup of lumininace based brightness manipulation we can
> > > just use
> > that.
> > >
> > > --v2
> > > -Fix commit message [Arun]
> > >
> > > Signed-off-by: Suraj Kandpal <suraj.kandpal at intel.com>
> > > ---
> > >  .../drm/i915/display/intel_dp_aux_backlight.c | 98
> > > +++++++++----------
> > >  1 file changed, 48 insertions(+), 50 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
> > > b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
> > > index 800d07c7f041..117c762fa2fe 100644
> > > --- a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
> > > +++ b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
> > > @@ -584,9 +584,37 @@ static int
> > > intel_dp_aux_vesa_setup_backlight(struct
> > > intel_connector *connector,
> > >  	u8 current_mode;
> > >  	int ret;
> > >
> > > -	if (panel->backlight.edp.vesa.luminance_control_support) {
> > > +	ret = drm_edp_backlight_init(&intel_dp->aux, &panel-
> > > >backlight.edp.vesa.info,
> > > +				     luminance_range->max_luminance,
> > > +				     panel->vbt.backlight.pwm_freq_hz,
> > > +				     intel_dp->edp_dpcd, &current_level,
> > > &current_mode,
> > > +				     false);
> > > +	if (ret < 0)
> > > +		return ret;
> > > +
> > > +	drm_dbg_kms(display->drm,
> > > +		    "[CONNECTOR:%d:%s] AUX VESA backlight enable is
> > > controlled through %s\n",
> > > +		    connector->base.base.id, connector->base.name,
> > > +		    dpcd_vs_pwm_str(panel-
> > > >backlight.edp.vesa.info.aux_enable));
> > > +	drm_dbg_kms(display->drm,
> > > +		    "[CONNECTOR:%d:%s] AUX VESA backlight level is
> > controlled
> > > through %s\n",
> > > +		    connector->base.base.id, connector->base.name,
> > > +		    dpcd_vs_pwm_str(panel-
> > >backlight.edp.vesa.info.aux_set));
> > > +
> > Can these both debug prints be combined?
> >
> 
> One talks about backlight enable and other about backlight level do you still
> Want to combine them ?
> 
Yes, can replace with "enable and level controlled by"

Thanks and Regards,
Arun R Murthy
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