drm/amd/amdgpu: add mutex locking for both DPM and PP based powergating for UVD/VCE

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This adds a mutex lock for both DPM/PP around the changes in
power gating state so that userspace can poll registers without
a race condition on power state.

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Tom St Denis 2016-07-28 09:40:07 -04:00 • committed by Alex Deucher

parent 70bb246154

commit e95a14a909

1 changed files with 25 additions and 33 deletions

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

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