Commit ba02bf8e authored by Suraj Kandpal's avatar Suraj Kandpal
Browse files

drm/dp: Enable backlight control using luminance 



Add flag to enable brightness control via luminance value
when enabling edp backlight.

Signed-off-by: default avatarSuraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: default avatarArun R Murthy <arun.r.murthy@intel.com>
Link: https://lore.kernel.org/r/20250620063445.3603086-11-suraj.kandpal@intel.com
parent 05a76aef

drivers/gpu/drm/display/drm_dp_helper.c

+3 −0
Original line number Diff line number Diff line
@@ -4038,6 +4038,9 @@ 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;



	if (bl->pwmgen_bit_count) {

		ret = drm_dp_dpcd_write_byte(aux, DP_EDP_PWMGEN_BIT_COUNT, bl->pwmgen_bit_count);

		if (ret < 0)