drm/amdgpu: fix gfx hang during suspend with video playback (v2)

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The system will be hang up during S3 suspend because of SMU is pending
for GC not respose the register CP_HQD_ACTIVE access request.This issue
root cause of accessing the GC register under enter GFX CGGPG and can
be fixed by disable GFX CGPG before perform suspend.

v2: Use disable the GFX CGPG instead of RLC safe mode guard.

Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Tested-by: Mengbing Wang <Mengbing.Wang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Prike Liang 2020-04-07 20:21:26 +08:00 • committed by Alex Deucher

parent 5f8693796c

commit a23ca7f76d

1 changed files with 3 additions and 2 deletions

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drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

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