diff mbox series

[4/4,SRU,M] drm/amd/display: Add monitor patch for specific eDP

Message ID 20240312080624.169161-5-acelan.kao@canonical.com
State New
Headers show
Series The screen brightness is unable to adjust on BOE panel DPN#R6FD8 | expand

Commit Message

AceLan Kao March 12, 2024, 8:06 a.m. UTC 
From: Ryan Lin <tsung-hua.lin@amd.com>

BugLink: https://bugs.launchpad.net/bugs/2057430

[WHY]
Some eDP panels' ext caps don't write initial values. The value of
dpcd_addr (0x317) can be random and the backlight control interface
will be incorrect.

[HOW]
Add new panel patches to remove sink ext caps.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.5.x
Cc: Tsung-hua Lin <tsung-hua.lin@amd.com>
Cc: Chris Chi <moukong.chi@amd.com>
Reviewed-by: Wayne Lin <wayne.lin@amd.com>
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Ryan Lin <tsung-hua.lin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit b7cdccc6a849568775f738b1e233f751a8fed013)
Signed-off-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
index 764dc3ffd91bb..5a51c5156c1ac 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
@@ -66,6 +66,8 @@  static void apply_edid_quirks(struct edid *edid, struct dc_edid_caps *edid_caps)
 	/* Workaround for some monitors that do not clear DPCD 0x317 if FreeSync is unsupported */
 	case drm_edid_encode_panel_id('A', 'U', 'O', 0xA7AB):
 	case drm_edid_encode_panel_id('A', 'U', 'O', 0xE69B):
+	case drm_edid_encode_panel_id('B', 'O', 'E', 0x092A):
+	case drm_edid_encode_panel_id('L', 'G', 'D', 0x06D1):
 		DRM_DEBUG_DRIVER("Clearing DPCD 0x317 on monitor with panel id %X\n", panel_id);
 		edid_caps->panel_patch.remove_sink_ext_caps = true;
 		break;
@@ -119,6 +121,8 @@  enum dc_edid_status dm_helpers_parse_edid_caps(
 
 	edid_caps->edid_hdmi = connector->display_info.is_hdmi;
 
+	apply_edid_quirks(edid_buf, edid_caps);
+
 	sad_count = drm_edid_to_sad((struct edid *) edid->raw_edid, &sads);
 	if (sad_count <= 0)
 		return result;
@@ -145,8 +149,6 @@  enum dc_edid_status dm_helpers_parse_edid_caps(
 	else
 		edid_caps->speaker_flags = DEFAULT_SPEAKER_LOCATION;
 
-	apply_edid_quirks(edid_buf, edid_caps);
-
 	kfree(sads);
 	kfree(sadb);