diff options
| author | Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com> | 2020-04-24 14:09:23 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-05-05 13:12:20 -0400 |
| commit | 17bdb4a82fe5014c8aa5b2103c80c5729744a096 (patch) | |
| tree | 16fb341c6ec8293ccb0586159eee2a426d84a108 /drivers | |
| parent | 7b353e41b4171c5dcc171306e4790bc328536f49 (diff) | |
drm/amd/display: Check DMCU Exists Before Loading
Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 7 |
1 files changed, 6 insertions, 1 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 26e370986c0c..2e0b86cea879 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1389,9 +1389,14 @@ static int dm_late_init(void *handle) struct dmcu_iram_parameters params; unsigned int linear_lut[16]; int i; - struct dmcu *dmcu = adev->dm.dc->res_pool->dmcu; + struct dmcu *dmcu = NULL; bool ret = false; + if (!adev->dm.fw_dmcu) + return detect_mst_link_for_all_connectors(adev->ddev); + + dmcu = adev->dm.dc->res_pool->dmcu; + for (i = 0; i < 16; i++) linear_lut[i] = 0xFFFF * i / 15; |