drm/amd/display: Disable PSR-SU on eDP panels

commit e8863f8b0316d8ee1e7e5291e8f2f72c91ac967d upstream.

[Why]
PSR-SU may cause some glitching randomly on several panels.

[How]
Temporarily disable the PSR-SU and fallback to PSR1 for
all eDP panels.

Link: https://gitlab.freedesktop.org/drm/amd/-/issues/3388
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Sun peng Li <sunpeng.li@amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 6deeefb820d0efb0b36753622fb982d03b37b3ad)
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_psr.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c
index 3eb8794807d2b815cbbf1d347b651e45d3798bb8..cb4b17c3b694d3b68d53e2e0cb2d63ff6cc057db 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c
@@ -51,7 +51,8 @@ static bool link_supports_psrsu(struct dc_link *link)
            !link->dpcd_caps.psr_info.psr2_su_y_granularity_cap)
                return false;
 
-       return dc_dmub_check_min_version(dc->ctx->dmub_srv->dmub);
+       /* Temporarily disable PSR-SU to avoid glitches */
+       return false;
 }
 
 /*