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drm/radeon/dynpm: wait for fences on all rings when reclocking

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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@amd.com>
This commit is contained in:
Alex Deucher 2012-08-10 13:12:08 -04:00
parent 62444b7462
commit 95f5a3acfa
1 changed files with 6 additions and 11 deletions
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17
drivers/gpu/drm/radeon/radeon_pm.c
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@ -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) {