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radeon: Try harder to ensure we reclock in vblank

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The vblank interrupt on r600 doesn't seem to be especially reliable, so
perform some sanity checks before the actual reclock.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Matthew Garrett
2010-04-28 12:13:06 -04:00
committed by Dave Airlie
parent 612e06ce9c
commit f81f202402
4 changed files with 39 additions and 1 deletions
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11
drivers/gpu/drm/radeon/radeon_pm.c
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@@ -387,7 +387,7 @@ void radeon_pm_compute_clocks(struct radeon_device *rdev)
mutex_unlock(&rdev->pm.mutex);
}
bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish)
bool radeon_pm_in_vbl(struct radeon_device *rdev)
{
u32 stat_crtc = 0;
bool in_vbl = true;
@@ -446,6 +446,15 @@ bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish)
in_vbl = false;
}
}
return in_vbl;
}
bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish)
{
u32 stat_crtc = 0;
bool in_vbl = radeon_pm_in_vbl(rdev);
if (in_vbl == false)
DRM_INFO("not in vbl for pm change %08x at %s\n", stat_crtc,
finish ? "exit" : "entry");