diff options
| author | Suraj Kandpal <suraj.kandpal@intel.com> | 2025-06-20 12:04:42 +0530 |
|---|---|---|
| committer | Suraj Kandpal <suraj.kandpal@intel.com> | 2025-06-30 20:41:48 +0530 |
| commit | ba02bf8e868a07163cd1518930181f849f37a752 (patch) | |
| tree | 69a6f46fc636de088162617fbb54c9dc371066f2 | |
| parent | 05a76aef23df031bca3cdc5c46dd67922f3a15f2 (diff) | |
drm/dp: Enable backlight control using luminance
Add flag to enable brightness control via luminance value
when enabling edp backlight.
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/20250620063445.3603086-11-suraj.kandpal@intel.com
| -rw-r--r-- | drivers/gpu/drm/display/drm_dp_helper.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/display/drm_dp_helper.c b/drivers/gpu/drm/display/drm_dp_helper.c index f30a041ec29b..e46c9dfc9753 100644 --- a/drivers/gpu/drm/display/drm_dp_helper.c +++ b/drivers/gpu/drm/display/drm_dp_helper.c @@ -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) |