Signed-off-by: James Zhu <james....@amd.com>
When VCN PG state is unchanged, it is unnecessary to reset
power gate state again.
---
drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
b/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
index 2664bb2..86d98d2 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
@@ -1633,12 +1633,21 @@ static int vcn_v1_0_set_powergating_state(void *handle,
* revisit this when there is a cleaner line between
* the smc and the hw blocks
*/
+ int ret;
+ static enum amd_powergating_state cur_state = AMD_PG_STATE_GATE;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ if (state == cur_state)
+ return 0;
+
if (state == AMD_PG_STATE_GATE)
- return vcn_v1_0_stop(adev);
+ ret = vcn_v1_0_stop(adev);
else
- return vcn_v1_0_start(adev);
+ ret = vcn_v1_0_start(adev);
+
+ if (!ret)
+ cur_state = state;
+ return ret;
}
static const struct amd_ip_funcs vcn_v1_0_ip_funcs = {
--
2.7.4
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