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authorMatthew Garrett <mjg@redhat.com>2010-04-30 15:48:23 -0400
committerDave Airlie <airlied@redhat.com>2010-05-18 18:21:47 +1000
commit01434b4bfba17626fe93a602e540f0004694d9df (patch)
tree852129f63829472b7a6f638c9d27fd251a2169a4 /drivers/gpu
parent91700f3cac56a1998a56d41e4459a5cebdb4f752 (diff)
downloadop-kernel-dev-01434b4bfba17626fe93a602e540f0004694d9df.zip
op-kernel-dev-01434b4bfba17626fe93a602e540f0004694d9df.tar.gz
radeon: Use fences to gate entry to reclocking on <r600
GUI idle interrupts don't seem to work terribly well on r500 and earlier, so let's use a fence instead. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/radeon/radeon_pm.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index bded834..1ee7fc9 100644
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -76,6 +76,14 @@ static void radeon_pm_set_clocks(struct radeon_device *rdev, int static_switch)
msecs_to_jiffies(RADEON_WAIT_IDLE_TIMEOUT));
rdev->irq.gui_idle = false;
radeon_irq_set(rdev);
+ } else {
+ struct radeon_fence *fence;
+ radeon_ring_alloc(rdev, 64);
+ radeon_fence_create(rdev, &fence);
+ radeon_fence_emit(rdev, fence);
+ radeon_ring_commit(rdev);
+ radeon_fence_wait(fence, false);
+ radeon_fence_unref(&fence);
}
radeon_unmap_vram_bos(rdev);
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