diff options
| author | Fangzhi Zuo <Jerry.Zuo@amd.com> | 2022-07-06 22:52:46 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-07-13 18:25:16 +0300 |
| commit | 57b9f3384c64e37bbdad7f127625ac3733d11e5c (patch) | |
| tree | e93aaabf143b9162eeb576167970a6364471b532 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | |
| parent | 50e8ca0b675add8eb0e95938448a4a0f9fb0b6dd (diff) | |
| download | linux-57b9f3384c64e37bbdad7f127625ac3733d11e5c.tar.xz | |
drm/amd/display: Ignore First MST Sideband Message Return Error
[why]
First MST sideband message returns AUX_RET_ERROR_HPD_DISCON
on certain intel platform. Aux transaction considered failure
if HPD unexpected pulled low. The actual aux transaction success
in such case, hence do not return error.
[how]
Not returning error when AUX_RET_ERROR_HPD_DISCON detected
on the first sideband message.
v2: squash in additional DMI entries
v3: squash in static fix
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h index 73755b304299..7bd750e9f891 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h @@ -547,6 +547,14 @@ struct amdgpu_display_manager { * last successfully applied backlight values. */ u32 actual_brightness[AMDGPU_DM_MAX_NUM_EDP]; + + /** + * @aux_hpd_discon_quirk: + * + * quirk for hpd discon while aux is on-going. + * occurred on certain intel platform + */ + bool aux_hpd_discon_quirk; }; enum dsc_clock_force_state { |