diff options
| author | Huang Rui <ray.huang@amd.com> | 2017-01-05 21:27:31 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-01-27 11:13:11 -0500 |
| commit | c79b55618a9c9fe2b8cd30ab2c9486d3ca3f1ff3 (patch) | |
| tree | 19a088583c85dd35e2882a7c7f8f519a04557cdf /drivers/gpu/drm/amd | |
| parent | c8781f56c85997a42e8ab3254f37c0c301f6b490 (diff) | |
drm/amdgpu: add get clockgating_state method for vce v3
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/vce_v3_0.c | 40 |
2 files changed, 37 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 5fa7c96dd307..393f75f65d4c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1066,6 +1066,7 @@ struct amdgpu_vce { struct amd_sched_entity entity; uint32_t srbm_soft_reset; unsigned num_rings; + bool is_powergated; }; /* diff --git a/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c b/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c index 37ca685e5a9a..afec2e9d01bc 100644 --- a/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c +++ b/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c @@ -777,15 +777,46 @@ static int vce_v3_0_set_powergating_state(void *handle, * the smc and the hw blocks */ struct amdgpu_device *adev = (struct amdgpu_device *)handle; + int ret = 0; if (!(adev->pg_flags & AMD_PG_SUPPORT_VCE)) return 0; - if (state == AMD_PG_STATE_GATE) + if (state == AMD_PG_STATE_GATE) { + adev->vce.is_powergated = true; /* XXX do we need a vce_v3_0_stop()? */ - return 0; - else - return vce_v3_0_start(adev); + } else { + ret = vce_v3_0_start(adev); + if (ret) + goto out; + adev->vce.is_powergated = false; + } + +out: + return ret; +} + +static void vce_v3_0_get_clockgating_state(void *handle, u32 *flags) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + int data; + + mutex_lock(&adev->pm.mutex); + + if (adev->vce.is_powergated) { + DRM_INFO("Cannot get clockgating state when VCE is powergated.\n"); + goto out; + } + + WREG32_FIELD(GRBM_GFX_INDEX, VCE_INSTANCE, 0); + + /* AMD_CG_SUPPORT_VCE_MGCG */ + data = RREG32(mmVCE_CLOCK_GATING_A); + if (data & (0x04 << 4)) + *flags |= AMD_CG_SUPPORT_VCE_MGCG; + +out: + mutex_unlock(&adev->pm.mutex); } static void vce_v3_0_ring_emit_ib(struct amdgpu_ring *ring, @@ -839,6 +870,7 @@ static const struct amd_ip_funcs vce_v3_0_ip_funcs = { .post_soft_reset = vce_v3_0_post_soft_reset, .set_clockgating_state = vce_v3_0_set_clockgating_state, .set_powergating_state = vce_v3_0_set_powergating_state, + .get_clockgating_state = vce_v3_0_get_clockgating_state, }; static const struct amdgpu_ring_funcs vce_v3_0_ring_phys_funcs = { |