diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/r100.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r100.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index 99bb0064935..65fe8e092a1 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -65,6 +65,40 @@ MODULE_FIRMWARE(FIRMWARE_R520); #include "r100_track.h" +void r100_wait_for_vblank(struct radeon_device *rdev, int crtc) +{ + struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc]; + int i; + + if (radeon_crtc->crtc_id == 0) { + if (RREG32(RADEON_CRTC_GEN_CNTL) & RADEON_CRTC_EN) { + for (i = 0; i < rdev->usec_timeout; i++) { + if (!(RREG32(RADEON_CRTC_STATUS) & RADEON_CRTC_VBLANK_CUR)) + break; + udelay(1); + } + for (i = 0; i < rdev->usec_timeout; i++) { + if (RREG32(RADEON_CRTC_STATUS) & RADEON_CRTC_VBLANK_CUR) + break; + udelay(1); + } + } + } else { + if (RREG32(RADEON_CRTC2_GEN_CNTL) & RADEON_CRTC2_EN) { + for (i = 0; i < rdev->usec_timeout; i++) { + if (!(RREG32(RADEON_CRTC2_STATUS) & RADEON_CRTC2_VBLANK_CUR)) + break; + udelay(1); + } + for (i = 0; i < rdev->usec_timeout; i++) { + if (RREG32(RADEON_CRTC2_STATUS) & RADEON_CRTC2_VBLANK_CUR) + break; + udelay(1); + } + } + } +} + /* This files gather functions specifics to: * r100,rv100,rs100,rv200,rs200,r200,rv250,rs300,rv280 */ |