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drm/i915/backlight: Use drm helper to initialize edp backlight

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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@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Link: https://lore.kernel.org/r/20250620063445.3603086-12-suraj.kandpal@intel.com
This commit is contained in:
Suraj Kandpal 2025-06-20 12:04:43 +05:30
parent ba02bf8e86
commit e13af5166a
1 changed files with 49 additions and 51 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

100
drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
View file

@ -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));
if (!panel->backlight.edp.vesa.info.aux_set ||
!panel->backlight.edp.vesa.info.aux_enable) {
ret = panel->backlight.pwm_funcs->setup(connector, pipe);
if (ret < 0) {
drm_err(display->drm,
"[CONNECTOR:%d:%s] Failed to setup PWM backlight controls for eDP backlight: %d\n",
connector->base.base.id, connector->base.name, ret);
return ret;
}
}
if (panel->backlight.edp.vesa.info.luminance_set) {
if (luminance_range->max_luminance) {
panel->backlight.max = luminance_range->max_luminance;
panel->backlight.max = panel->backlight.edp.vesa.info.max;
panel->backlight.min = luminance_range->min_luminance;
} else {
panel->backlight.max = 512;
@ -597,56 +625,26 @@ static int intel_dp_aux_vesa_setup_backlight(struct intel_connector *connector,
drm_dbg_kms(display->drm,
"[CONNECTOR:%d:%s] AUX VESA Nits backlight level is controlled through DPCD\n",
connector->base.base.id, connector->base.name);
} else {
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));
if (!panel->backlight.edp.vesa.info.aux_set ||
!panel->backlight.edp.vesa.info.aux_enable) {
ret = panel->backlight.pwm_funcs->setup(connector, pipe);
if (ret < 0) {
drm_err(display->drm,
"[CONNECTOR:%d:%s] Failed to setup PWM backlight controls for eDP backlight: %d\n",
connector->base.base.id, connector->base.name, ret);
return ret;
}
}
if (panel->backlight.edp.vesa.info.aux_set) {
panel->backlight.max = panel->backlight.edp.vesa.info.max;
panel->backlight.min = 0;
if (current_mode == DP_EDP_BACKLIGHT_CONTROL_MODE_DPCD) {
panel->backlight.level = current_level;
panel->backlight.enabled = panel->backlight.level != 0;
} else {
panel->backlight.level = panel->backlight.max;
panel->backlight.enabled = false;
}
} else if (panel->backlight.edp.vesa.info.aux_set) {
panel->backlight.max = panel->backlight.edp.vesa.info.max;
panel->backlight.min = 0;
if (current_mode == DP_EDP_BACKLIGHT_CONTROL_MODE_DPCD) {
panel->backlight.level = current_level;
panel->backlight.enabled = panel->backlight.level != 0;
} else {
panel->backlight.max = panel->backlight.pwm_level_max;
panel->backlight.min = panel->backlight.pwm_level_min;
if (current_mode == DP_EDP_BACKLIGHT_CONTROL_MODE_PWM) {
panel->backlight.level =
panel->backlight.pwm_funcs->get(connector, pipe);
panel->backlight.enabled = panel->backlight.pwm_enabled;
} else {
panel->backlight.level = panel->backlight.max;
panel->backlight.enabled = false;
}
panel->backlight.level = panel->backlight.max;
panel->backlight.enabled = false;
}
} else {
panel->backlight.max = panel->backlight.pwm_level_max;
panel->backlight.min = panel->backlight.pwm_level_min;
if (current_mode == DP_EDP_BACKLIGHT_CONTROL_MODE_PWM) {
panel->backlight.level =
panel->backlight.pwm_funcs->get(connector, pipe);
panel->backlight.enabled = panel->backlight.pwm_enabled;
} else {
panel->backlight.level = panel->backlight.max;
panel->backlight.enabled = false;
}
}