drm/amd/display: Add HDR workaround for a specific eDP

commit 7d08c3b1731014dd1cfd0bf8b0cb1cef9dfd191e upstream.

[WHY & HOW]
Some eDP panels suffer from flicking when HDR is enabled in KDE or
Gnome.

This add another quirk to worksaround to skip VSC that is incompatible
with an eDP panel.

Link: https://gitlab.freedesktop.org/drm/amd/-/issues/4452
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Wayne Lin <wayne.lin@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 99441824bec63549a076cd86631d138ec9a0c71c)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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 9e3e51a2dc4968c0dcf7b4532ff7cc00e43ad730..7ed7027150d30807d5f937019c466ab720d249c7 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
@@ -82,6 +82,7 @@ static void apply_edid_quirks(struct drm_device *dev, struct edid *edid, struct
                edid_caps->panel_patch.remove_sink_ext_caps = true;
                break;
        case drm_edid_encode_panel_id('S', 'D', 'C', 0x4154):
+       case drm_edid_encode_panel_id('S', 'D', 'C', 0x4171):
                drm_dbg_driver(dev, "Disabling VSC on monitor with panel id %X\n", panel_id);
                edid_caps->panel_patch.disable_colorimetry = true;
                break;