From: Nicholas Kazlauskas nicholas.kazlauskas@amd.com

[ Upstream commit 2d673560b7b83f8fe4163610f35c51b4d095525c ]

[Why] This is enabled by default on Renoir but there's userspace/API support to actually make use of this.

Since we're not passing this down through surface updates, let's explicitly disable this for now.

This fixes "dcn20_program_front_end_for_ctx" warnings associated with incorrect/unexpected programming sequences performed while this is enabled.

[How] Disable it at the topmost level in DM in case anyone tries to flip this to enabled for any of the other ASICs like Navi10/14.

Signed-off-by: Nicholas Kazlauskas nicholas.kazlauskas@amd.com Reviewed-by: Hersen Wu hersenxs.wu@amd.com Acked-by: Rodrigo Siqueira Rodrigo.Siqueira@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 +++ 1 file changed, 3 insertions(+)

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 b9853fd724d60..f2850f5b0808c 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2909,6 +2909,9 @@ static int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev) if (adev->asic_type != CHIP_CARRIZO && adev->asic_type != CHIP_STONEY) dm->dc->debug.disable_stutter = amdgpu_pp_feature_mask & PP_STUTTER_MODE ? false : true;

+ /* No userspace support. */ + dm->dc->debug.disable_tri_buf = true; + return 0; fail: kfree(aencoder);