From a3ae3384be7704fcf41279f13190bd8a11204bea Mon Sep 17 00:00:00 2001 From: Antheas Kapenekakis Date: Fri, 29 Aug 2025 16:55:41 +0200 Subject: [PATCH 4965/5403] drm: panel-backlight-quirks: Log applied panel brightness quirks Currently, when a panel brightness quirk is applied, there is no log indicating that a quirk was applied. Unwrap the drm device on its own and use drm_info() to log when a quirk is applied. Suggested-by: Mario Limonciello Signed-off-by: Antheas Kapenekakis Link: https://lore.kernel.org/r/20250829145541.512671-7-lkml@antheas.dev Acked-by: Alex Deucher Reviewed-by: Mario Limonciello (Correct a missing -1 in the message math) Signed-off-by: Mario Limonciello (AMD) --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 156f2aae6828..18f0e0912ea6 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -3617,13 +3617,15 @@ static void update_connector_ext_caps(struct amdgpu_dm_connector *aconnector) struct drm_connector *conn_base; struct amdgpu_device *adev; struct drm_luminance_range_info *luminance_range; + struct drm_device *drm; if (aconnector->bl_idx == -1 || aconnector->dc_link->connector_signal != SIGNAL_TYPE_EDP) return; conn_base = &aconnector->base; - adev = drm_to_adev(conn_base->dev); + drm = conn_base->dev; + adev = drm_to_adev(drm); caps = &adev->dm.backlight_caps[aconnector->bl_idx]; caps->ext_caps = &aconnector->dc_link->dpcd_sink_ext_caps; @@ -3659,12 +3661,20 @@ static void update_connector_ext_caps(struct amdgpu_dm_connector *aconnector) panel_backlight_quirk = drm_get_panel_backlight_quirk(aconnector->drm_edid); if (!IS_ERR_OR_NULL(panel_backlight_quirk)) { - if (panel_backlight_quirk->min_brightness) + if (panel_backlight_quirk->min_brightness) { caps->min_input_signal = panel_backlight_quirk->min_brightness - 1; - if (panel_backlight_quirk->brightness_mask) + drm_info(drm, + "Applying panel backlight quirk, min_brightness: %d\n", + caps->min_input_signal); + } + if (panel_backlight_quirk->brightness_mask) { + drm_info(drm, + "Applying panel backlight quirk, brightness_mask: 0x%X\n", + panel_backlight_quirk->brightness_mask); caps->brightness_mask = panel_backlight_quirk->brightness_mask; + } } } -- 2.54.0