[PATCH] drm/amdgpu: remove unused power control for vcn

[Leo Liu]

The power control for vcn has been moved to firmware, kernel'll spins 
"amdgpu: [powerplay] pp_dpm_powergate_uvd was not implemented", each
time when application runs, so let's remove it.

Signed-off-by: Leo Liu <leo.liu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 23 +----------------------
 drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h |  1 -
 drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c   |  4 ++--
 3 files changed, 3 insertions(+), 25 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
index 09190fa..4186f45 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
@@ -207,29 +207,8 @@ static void amdgpu_vcn_idle_work_handler(struct work_struct *work)
 		container_of(work, struct amdgpu_device, vcn.idle_work.work);
 	unsigned fences = amdgpu_fence_count_emitted(&adev->vcn.ring_dec);
 
-	if (fences == 0) {
-		if (adev->pm.dpm_enabled) {
-			amdgpu_dpm_enable_uvd(adev, false);
-		} else {
-			amdgpu_asic_set_uvd_clocks(adev, 0, 0);
-		}
-	} else {
+	if (fences != 0)
 		schedule_delayed_work(&adev->vcn.idle_work, VCN_IDLE_TIMEOUT);
-	}
-}
-
-void amdgpu_vcn_ring_begin_use(struct amdgpu_ring *ring)
-{
-	struct amdgpu_device *adev = ring->adev;
-	bool set_clocks = !cancel_delayed_work_sync(&adev->vcn.idle_work);
-
-	if (set_clocks) {
-		if (adev->pm.dpm_enabled) {
-			amdgpu_dpm_enable_uvd(adev, true);
-		} else {
-			amdgpu_asic_set_uvd_clocks(adev, 53300, 40000);
-		}
-	}
 }
 
 void amdgpu_vcn_ring_end_use(struct amdgpu_ring *ring)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
index d50ba06..930903d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
@@ -65,7 +65,6 @@ int amdgpu_vcn_sw_init(struct amdgpu_device *adev);
 int amdgpu_vcn_sw_fini(struct amdgpu_device *adev);
 int amdgpu_vcn_suspend(struct amdgpu_device *adev);
 int amdgpu_vcn_resume(struct amdgpu_device *adev);
-void amdgpu_vcn_ring_begin_use(struct amdgpu_ring *ring);
 void amdgpu_vcn_ring_end_use(struct amdgpu_ring *ring);
 
 int amdgpu_vcn_dec_ring_test_ring(struct amdgpu_ring *ring);
diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
index 21e7b88..94814f0 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
@@ -1122,7 +1122,7 @@ static const struct amdgpu_ring_funcs vcn_v1_0_dec_ring_vm_funcs = {
 	.insert_start = vcn_v1_0_dec_ring_insert_start,
 	.insert_end = vcn_v1_0_dec_ring_insert_end,
 	.pad_ib = amdgpu_ring_generic_pad_ib,
-	.begin_use = amdgpu_vcn_ring_begin_use,
+	.begin_use = NULL,
 	.end_use = amdgpu_vcn_ring_end_use,
 };
 
@@ -1148,7 +1148,7 @@ static const struct amdgpu_ring_funcs vcn_v1_0_enc_ring_vm_funcs = {
 	.insert_nop = amdgpu_ring_insert_nop,
 	.insert_end = vcn_v1_0_enc_ring_insert_end,
 	.pad_ib = amdgpu_ring_generic_pad_ib,
-	.begin_use = amdgpu_vcn_ring_begin_use,
+	.begin_use = NULL,
 	.end_use = amdgpu_vcn_ring_end_use,
 };
 
-- 
2.7.4