drm/amdgpu: refine uvd4.2 init/stop code.

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1. set uvd_status busy before uvd_start.
2. clear uvd_status to 0 after uvd stop.
   smu firmware may check uvd_status.
3. wait uvd idle before stop uvd.
4. not start uvd when hw_init.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Rex Zhu 2017-01-20 15:56:45 +08:00 • committed by Alex Deucher

parent d01c6236ac

commit 8b55d17eee

1 changed files with 70 additions and 41 deletions

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drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c

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