drm/amdgpu:No action when VCN PG state is unchanged (c95f75f4) · Commits · 戴 / test

drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -69,6 +69,7 @@ struct amdgpu_vcn {
		struct amdgpu_ring ring_jpeg;
		struct amdgpu_irq_src irq;
		unsigned num_enc_rings;
		enum amd_powergating_state cur_state;
		};

		int amdgpu_vcn_sw_init(struct amdgpu_device *adev);

+10 −2

Original line number	Diff line number	Diff line
		@@ -1633,12 +1633,20 @@ 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;
		struct amdgpu_device adev = (struct amdgpu_device )handle;

		if(state == adev->vcn.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)
		adev->vcn.cur_state = state;
		return ret;
		}

		static const struct amd_ip_funcs vcn_v1_0_ip_funcs = {