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drm/amdgpu:No action when VCN PG state is unchanged

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When VCN PG state is unchanged, it is unnecessary to reset power
gate state

Signed-off-by: James Zhu <James.Zhu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
James Zhu 2018-09-13 16:55:44 -04:00 • committed by Alex Deucher
parent 2faec55c4d
commit c95f75f4e8
2 changed files with 11 additions and 2 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
View file

@ -69,6 +69,7 @@ struct amdgpu_vcn {
struct amdgpu_ring ring_jpeg; struct amdgpu_ring ring_jpeg;
struct amdgpu_irq_src irq; struct amdgpu_irq_src irq;
unsigned num_enc_rings; unsigned num_enc_rings;
enum amd_powergating_state cur_state;
}; };
int amdgpu_vcn_sw_init(struct amdgpu_device *adev); int amdgpu_vcn_sw_init(struct amdgpu_device *adev);

12
drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
View file

@ -1633,12 +1633,20 @@ static int vcn_v1_0_set_powergating_state(void *handle,
* revisit this when there is a cleaner line between * revisit this when there is a cleaner line between
* the smc and the hw blocks * the smc and the hw blocks
*/ */
int ret;
struct amdgpu_device *adev = (struct amdgpu_device *)handle; struct amdgpu_device *adev = (struct amdgpu_device *)handle;
if(state == adev->vcn.cur_state)
return 0;
if (state == AMD_PG_STATE_GATE) if (state == AMD_PG_STATE_GATE)
return vcn_v1_0_stop(adev); ret = vcn_v1_0_stop(adev);
else 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 = { static const struct amd_ip_funcs vcn_v1_0_ip_funcs = {