drm/radeon: consolidate cik vce initialization and startup code.

This match the exact same control flow as existing code. It just
use goto instead of multiple levels of if/else. It also clarify
early initialization failures by clearing rdev->has_vce doing so
does not change end result from hardware point of view, it only
avoids printing more error messages down the line and thus only
the original error is reported.
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/cik.c

@@ -8209,6 +8209,92 @@ static void cik_uvd_resume(struct radeon_device *rdev)
 	}
 }
 
+static void cik_vce_init(struct radeon_device *rdev)
+{
+	int r;
+
+	if (!rdev->has_vce)
+		return;
+
+	r = radeon_vce_init(rdev);
+	if (r) {
+		dev_err(rdev->dev, "failed VCE (%d) init.\n", r);
+		/*
+		 * At this point rdev->vce.vcpu_bo is NULL which trickles down
+		 * to early fails cik_vce_start() and thus nothing happens
+		 * there. So it is pointless to try to go through that code
+		 * hence why we disable vce here.
+		 */
+		rdev->has_vce = 0;
+		return;
+	}
+	rdev->ring[TN_RING_TYPE_VCE1_INDEX].ring_obj = NULL;
+	r600_ring_init(rdev, &rdev->ring[TN_RING_TYPE_VCE1_INDEX], 4096);
+	rdev->ring[TN_RING_TYPE_VCE2_INDEX].ring_obj = NULL;
+	r600_ring_init(rdev, &rdev->ring[TN_RING_TYPE_VCE2_INDEX], 4096);
+}
+
+static void cik_vce_start(struct radeon_device *rdev)
+{
+	int r;
+
+	if (!rdev->has_vce)
+		return;
+
+	r = radeon_vce_resume(rdev);
+	if (r) {
+		dev_err(rdev->dev, "failed VCE resume (%d).\n", r);
+		goto error;
+	}
+	r = vce_v2_0_resume(rdev);
+	if (r) {
+		dev_err(rdev->dev, "failed VCE resume (%d).\n", r);
+		goto error;
+	}
+	r = radeon_fence_driver_start_ring(rdev, TN_RING_TYPE_VCE1_INDEX);
+	if (r) {
+		dev_err(rdev->dev, "failed initializing VCE1 fences (%d).\n", r);
+		goto error;
+	}
+	r = radeon_fence_driver_start_ring(rdev, TN_RING_TYPE_VCE2_INDEX);
+	if (r) {
+		dev_err(rdev->dev, "failed initializing VCE2 fences (%d).\n", r);
+		goto error;
+	}
+	return;
+
+error:
+	rdev->ring[TN_RING_TYPE_VCE1_INDEX].ring_size = 0;
+	rdev->ring[TN_RING_TYPE_VCE2_INDEX].ring_size = 0;
+}
+
+static void cik_vce_resume(struct radeon_device *rdev)
+{
+	struct radeon_ring *ring;
+	int r;
+
+	if (!rdev->has_vce || !rdev->ring[TN_RING_TYPE_VCE1_INDEX].ring_size)
+		return;
+
+	ring = &rdev->ring[TN_RING_TYPE_VCE1_INDEX];
+	r = radeon_ring_init(rdev, ring, ring->ring_size, 0, VCE_CMD_NO_OP);
+	if (r) {
+		dev_err(rdev->dev, "failed initializing VCE1 ring (%d).\n", r);
+		return;
+	}
+	ring = &rdev->ring[TN_RING_TYPE_VCE2_INDEX];
+	r = radeon_ring_init(rdev, ring, ring->ring_size, 0, VCE_CMD_NO_OP);
+	if (r) {
+		dev_err(rdev->dev, "failed initializing VCE1 ring (%d).\n", r);
+		return;
+	}
+	r = vce_v1_0_init(rdev);
+	if (r) {
+		dev_err(rdev->dev, "failed initializing VCE (%d).\n", r);
+		return;
+	}
+}
+
 /**
  * cik_startup - program the asic to a functional state
  *
@@ -8312,22 +8398,7 @@ static int cik_startup(struct radeon_device *rdev)
 	}
 
 	cik_uvd_start(rdev);
-
-	r = radeon_vce_resume(rdev);
-	if (!r) {
-		r = vce_v2_0_resume(rdev);
-		if (!r)
-			r = radeon_fence_driver_start_ring(rdev,
-							   TN_RING_TYPE_VCE1_INDEX);
-		if (!r)
-			r = radeon_fence_driver_start_ring(rdev,
-							   TN_RING_TYPE_VCE2_INDEX);
-	}
-	if (r) {
-		dev_err(rdev->dev, "VCE init error (%d).\n", r);
-		rdev->ring[TN_RING_TYPE_VCE1_INDEX].ring_size = 0;
-		rdev->ring[TN_RING_TYPE_VCE2_INDEX].ring_size = 0;
-	}
+	cik_vce_start(rdev);
 
 	/* Enable IRQ */
 	if (!rdev->irq.installed) {
@@ -8404,23 +8475,7 @@ static int cik_startup(struct radeon_device *rdev)
 		return r;
 
 	cik_uvd_resume(rdev);
-
-	r = -ENOENT;
-
-	ring = &rdev->ring[TN_RING_TYPE_VCE1_INDEX];
-	if (ring->ring_size)
-		r = radeon_ring_init(rdev, ring, ring->ring_size, 0,
-				     VCE_CMD_NO_OP);
-
-	ring = &rdev->ring[TN_RING_TYPE_VCE2_INDEX];
-	if (ring->ring_size)
-		r = radeon_ring_init(rdev, ring, ring->ring_size, 0,
-				     VCE_CMD_NO_OP);
-
-	if (!r)
-		r = vce_v1_0_init(rdev);
-	else if (r != -ENOENT)
-		DRM_ERROR("radeon: failed initializing VCE (%d).\n", r);
+	cik_vce_resume(rdev);
 
 	r = radeon_ib_pool_init(rdev);
 	if (r) {
@@ -8500,7 +8555,8 @@ int cik_suspend(struct radeon_device *rdev)
 		uvd_v1_0_fini(rdev);
 		radeon_uvd_suspend(rdev);
 	}
-	radeon_vce_suspend(rdev);
+	if (rdev->has_vce)
+		radeon_vce_suspend(rdev);
 	cik_fini_pg(rdev);
 	cik_fini_cg(rdev);
 	cik_irq_suspend(rdev);
@@ -8627,17 +8683,7 @@ int cik_init(struct radeon_device *rdev)
 	r600_ring_init(rdev, ring, 256 * 1024);
 
 	cik_uvd_init(rdev);
-
-	r = radeon_vce_init(rdev);
-	if (!r) {
-		ring = &rdev->ring[TN_RING_TYPE_VCE1_INDEX];
-		ring->ring_obj = NULL;
-		r600_ring_init(rdev, ring, 4096);
-
-		ring = &rdev->ring[TN_RING_TYPE_VCE2_INDEX];
-		ring->ring_obj = NULL;
-		r600_ring_init(rdev, ring, 4096);
-	}
+	cik_vce_init(rdev);
 
 	rdev->ih.ring_obj = NULL;
 	r600_ih_ring_init(rdev, 64 * 1024);