From 81fd01414f259ff897054c50750a25cbb0255060 Mon Sep 17 00:00:00 2001 From: Suraj Kandpal Date: Fri, 20 Jun 2025 12:04:35 +0530 Subject: [PATCH 4234/5403] drm/dp: Add argument for max luminance in drm_edp_backlight_init Add new argument to drm_edp_backlight_init which gives the max_luminance which will be needed to set the max values for backlight. --v2 -Use pass only max luminance instead of luminance_range_info struct [Arun] Signed-off-by: Suraj Kandpal Reviewed-by: Arun R Murthy Link: https://lore.kernel.org/r/20250620063445.3603086-4-suraj.kandpal@intel.com --- drivers/gpu/drm/display/drm_dp_helper.c | 4 +++- drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c | 6 ++++-- include/drm/display/drm_dp_helper.h | 1 + 3 files changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/display/drm_dp_helper.c b/drivers/gpu/drm/display/drm_dp_helper.c index 6cbd15ff3a5c..640bf2fe0908 100644 --- a/drivers/gpu/drm/display/drm_dp_helper.c +++ b/drivers/gpu/drm/display/drm_dp_helper.c @@ -4235,6 +4235,7 @@ drm_edp_backlight_probe_state(struct drm_dp_aux *aux, struct drm_edp_backlight_i * interface. * @aux: The DP aux device to use for probing * @bl: The &drm_edp_backlight_info struct to fill out with information on the backlight + * @max_luminance: max luminance when need luminance is set as true * @driver_pwm_freq_hz: Optional PWM frequency from the driver in hz * @edp_dpcd: A cached copy of the eDP DPCD * @current_level: Where to store the probed brightness level, if any @@ -4251,6 +4252,7 @@ drm_edp_backlight_probe_state(struct drm_dp_aux *aux, struct drm_edp_backlight_i */ int drm_edp_backlight_init(struct drm_dp_aux *aux, struct drm_edp_backlight_info *bl, + u32 max_luminance, u16 driver_pwm_freq_hz, const u8 edp_dpcd[EDP_DISPLAY_CTL_CAP_SIZE], u16 *current_level, u8 *current_mode, bool need_luminance) { @@ -4380,7 +4382,7 @@ int drm_panel_dp_aux_backlight(struct drm_panel *panel, struct drm_dp_aux *aux) bl->aux = aux; - ret = drm_edp_backlight_init(aux, &bl->info, 0, edp_dpcd, + ret = drm_edp_backlight_init(aux, &bl->info, 0, 0, edp_dpcd, ¤t_level, ¤t_mode, false); if (ret < 0) return ret; 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 7bf6012902e4..7225029f3b06 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c +++ b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c @@ -599,8 +599,10 @@ static int intel_dp_aux_vesa_setup_backlight(struct intel_connector *connector, connector->base.base.id, connector->base.name); } else { ret = drm_edp_backlight_init(&intel_dp->aux, &panel->backlight.edp.vesa.info, - panel->vbt.backlight.pwm_freq_hz, intel_dp->edp_dpcd, - ¤t_level, ¤t_mode, false); + luminance_range->max_luminance, + panel->vbt.backlight.pwm_freq_hz, + intel_dp->edp_dpcd, ¤t_level, ¤t_mode, + false); if (ret < 0) return ret; diff --git a/include/drm/display/drm_dp_helper.h b/include/drm/display/drm_dp_helper.h index ea38e7807421..0575418f0eb3 100644 --- a/include/drm/display/drm_dp_helper.h +++ b/include/drm/display/drm_dp_helper.h @@ -854,6 +854,7 @@ struct drm_edp_backlight_info { int drm_edp_backlight_init(struct drm_dp_aux *aux, struct drm_edp_backlight_info *bl, + u32 max_luminance, u16 driver_pwm_freq_hz, const u8 edp_dpcd[EDP_DISPLAY_CTL_CAP_SIZE], u16 *current_level, u8 *current_mode, bool need_luminance); int drm_edp_backlight_set_level(struct drm_dp_aux *aux, const struct drm_edp_backlight_info *bl, -- 2.54.0