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| author | Rex Zhu <Rex.Zhu@amd.com> | 2018-07-27 21:06:30 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-08-27 11:09:52 -0500 |
| commit | 1e317b99f0c244bd8830918fdae9715210baf4fe (patch) | |
| tree | 1a58b47f1992f10d20c7d0ce21971ad1b993258b /drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | |
| parent | d23ee13fba23a3039971a976b2c4857cb5ba9c73 (diff) | |
| download | linux-1e317b99f0c244bd8830918fdae9715210baf4fe.tar.gz linux-1e317b99f0c244bd8830918fdae9715210baf4fe.tar.bz2 linux-1e317b99f0c244bd8830918fdae9715210baf4fe.zip | |
drm/amdgpu: Put enable gfx off feature to a delay thread
delay to enable gfx off feature to avoid gfx on/off frequently
suggested by Alex and Evan.
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c index 1cdb26471a03..11d4d9f93b95 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c @@ -26,6 +26,9 @@ #include "amdgpu.h" #include "amdgpu_gfx.h" +/* 0.5 second timeout */ +#define GFX_OFF_DELAY_ENABLE msecs_to_jiffies(500) + /* * GPU scratch registers helpers function. */ @@ -360,6 +363,7 @@ void amdgpu_gfx_off_ctrl(struct amdgpu_device *adev, bool enable) if (!adev->powerplay.pp_funcs->set_powergating_by_smu) return; + mutex_lock(&adev->gfx.gfx_off_mutex); if (!enable) @@ -368,11 +372,11 @@ void amdgpu_gfx_off_ctrl(struct amdgpu_device *adev, bool enable) adev->gfx.gfx_off_req_count--; if (enable && !adev->gfx.gfx_off_state && !adev->gfx.gfx_off_req_count) { - if (!amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_GFX, true)) - adev->gfx.gfx_off_state = true; + schedule_delayed_work(&adev->gfx.gfx_off_delay_work, GFX_OFF_DELAY_ENABLE); } else if (!enable && adev->gfx.gfx_off_state) { if (!amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_GFX, false)) adev->gfx.gfx_off_state = false; } + mutex_unlock(&adev->gfx.gfx_off_mutex); } |