[PATCH 1/2] drm/radeon/dynpm: wait for fences on all rings when reclocking

[alexdeucher at gmail.com]

From: Alex Deucher <alexander.deucher at amd.com>

1. Drop gui idle stuff, it's not as reliable as fences and only
covers the 3D engine.
2. Wait for fences on all rings.  This makes sure all rings are
idle when reclocking.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/radeon/radeon_pm.c |   17 ++++++-----------
 1 files changed, 6 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index 7ae6066..2c2c901 100644
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -253,18 +253,13 @@ static void radeon_pm_set_clocks(struct radeon_device *rdev)
 	down_write(&rdev->pm.mclk_lock);
 	mutex_lock(&rdev->ring_lock);
 
-	/* gui idle int has issues on older chips it seems */
-	if (rdev->family >= CHIP_R600) {
-		if (rdev->irq.installed) {
-			/* wait for GPU to become idle */
-			radeon_irq_kms_wait_gui_idle(rdev);
-		}
-	} else {
-		struct radeon_ring *ring = &rdev->ring[RADEON_RING_TYPE_GFX_INDEX];
-		if (ring->ready) {
-			radeon_fence_wait_empty_locked(rdev, RADEON_RING_TYPE_GFX_INDEX);
-		}
+	/* wait for the rings to drain */
+	for (i = 0; i < RADEON_NUM_RINGS; i++) {
+		struct radeon_ring *ring = &rdev->ring[i];
+		if (ring->ready)
+			radeon_fence_wait_empty_locked(rdev, i);
 	}
+
 	radeon_unmap_vram_bos(rdev);
 
 	if (rdev->irq.installed) {
-- 
1.7.7.5