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drm/radeon/kms: add wait_for_vblank asic callback

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Required for future functionality.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher
2012-02-23 17:53:37 -05:00
committed by Dave Airlie
parent e5bcf23443
commit 3ae19b750b
9 changed files with 100 additions and 1 deletions
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19
drivers/gpu/drm/radeon/rs600.c
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@@ -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 */