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authorHuang Rui <ray.huang@amd.com>2017-01-05 16:07:02 +0300
committerAlex Deucher <alexander.deucher@amd.com>2017-01-27 19:13:10 +0300
commitc8781f56c85997a42e8ab3254f37c0c301f6b490 (patch)
tree4d40ca1dbf030f9a55abe3484cbddde839ff5c3c /drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c
parentabd2c2fe1212698ed326d5746e487abecb2ed325 (diff)
downloadlinux-c8781f56c85997a42e8ab3254f37c0c301f6b490.tar.xz
drm/amdgpu: add get clockgating_state method for uvd v5&v6
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/amdgpu/uvd_v5_0.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c33
1 files changed, 31 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c
index 6de6becce745..9b49824233ae 100644
--- a/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c
@@ -822,16 +822,44 @@ static int uvd_v5_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_UVD))
return 0;
if (state == AMD_PG_STATE_GATE) {
uvd_v5_0_stop(adev);
- return 0;
+ adev->uvd.is_powergated = true;
} else {
- return uvd_v5_0_start(adev);
+ ret = uvd_v5_0_start(adev);
+ if (ret)
+ goto out;
+ adev->uvd.is_powergated = false;
+ }
+
+out:
+ return ret;
+}
+
+static void uvd_v5_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->uvd.is_powergated) {
+ DRM_INFO("Cannot get clockgating state when UVD is powergated.\n");
+ goto out;
}
+
+ /* AMD_CG_SUPPORT_UVD_MGCG */
+ data = RREG32(mmUVD_CGC_CTRL);
+ if (data & UVD_CGC_CTRL__DYN_CLOCK_MODE_MASK)
+ *flags |= AMD_CG_SUPPORT_UVD_MGCG;
+
+out:
+ mutex_unlock(&adev->pm.mutex);
}
static const struct amd_ip_funcs uvd_v5_0_ip_funcs = {
@@ -849,6 +877,7 @@ static const struct amd_ip_funcs uvd_v5_0_ip_funcs = {
.soft_reset = uvd_v5_0_soft_reset,
.set_clockgating_state = uvd_v5_0_set_clockgating_state,
.set_powergating_state = uvd_v5_0_set_powergating_state,
+ .get_clockgating_state = uvd_v5_0_get_clockgating_state,
};
static const struct amdgpu_ring_funcs uvd_v5_0_ring_funcs = {