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path: root/drivers/gpu/drm/radeon/rs600.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/rs600.c')
-rw-r--r--drivers/gpu/drm/radeon/rs600.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index ec46eb45e34..fdb56b44dcd 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -46,6 +46,25 @@
void rs600_gpu_init(struct radeon_device *rdev);
int rs600_mc_wait_for_idle(struct radeon_device *rdev);
+void avivo_wait_for_vblank(struct radeon_device *rdev, int crtc)
+{
+ struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc];
+ int i;
+
+ if (RREG32(AVIVO_D1CRTC_CONTROL + radeon_crtc->crtc_offset) & AVIVO_CRTC_EN) {
+ for (i = 0; i < rdev->usec_timeout; i++) {
+ if (!(RREG32(AVIVO_D1CRTC_STATUS + radeon_crtc->crtc_offset) & AVIVO_D1CRTC_V_BLANK))
+ break;
+ udelay(1);
+ }
+ for (i = 0; i < rdev->usec_timeout; i++) {
+ if (RREG32(AVIVO_D1CRTC_STATUS + radeon_crtc->crtc_offset) & AVIVO_D1CRTC_V_BLANK)
+ break;
+ udelay(1);
+ }
+ }
+}
+
void rs600_pre_page_flip(struct radeon_device *rdev, int crtc)
{
/* enable the pflip int */