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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>
This commit is contained in:
Jerry (Fangzhi) Zuo 2020-04-24 14:09:23 -04:00 committed by Alex Deucher
parent 7b353e41b4
commit 17bdb4a82f
1 changed files with 6 additions and 1 deletions
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7
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@ -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;