diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c index 239bf2a4b3c6..1cdb26471a03 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c @@ -340,3 +340,39 @@ void amdgpu_gfx_compute_mqd_sw_fini(struct amdgpu_device *adev) &ring->mqd_gpu_addr, &ring->mqd_ptr); } + +/* amdgpu_gfx_off_ctrl - Handle gfx off feature enable/disable + * + * @adev: amdgpu_device pointer + * @bool enable true: enable gfx off feature, false: disable gfx off feature + * + * 1. gfx off feature will be enabled by gfx ip after gfx cg gp enabled. + * 2. other client can send request to disable gfx off feature, the request should be honored. + * 3. other client can cancel their request of disable gfx off feature + * 4. other client should not send request to enable gfx off feature before disable gfx off feature. + */ + +void amdgpu_gfx_off_ctrl(struct amdgpu_device *adev, bool enable) +{ + if (!(adev->powerplay.pp_feature & PP_GFXOFF_MASK)) + return; + + if (!adev->powerplay.pp_funcs->set_powergating_by_smu) + return; + + mutex_lock(&adev->gfx.gfx_off_mutex); + + if (!enable) + adev->gfx.gfx_off_req_count++; + else if (adev->gfx.gfx_off_req_count > 0) + 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; + } 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); +} |