diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/rv515.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/rv515.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/rv515.c b/drivers/gpu/drm/radeon/rv515.c index 6a1e5dd5b5e..ffcba730c57 100644 --- a/drivers/gpu/drm/radeon/rv515.c +++ b/drivers/gpu/drm/radeon/rv515.c @@ -303,8 +303,10 @@ void rv515_mc_stop(struct radeon_device *rdev, struct rv515_mc_save *save) tmp = RREG32(AVIVO_D1CRTC_CONTROL + crtc_offsets[i]); if (!(tmp & AVIVO_CRTC_DISP_READ_REQUEST_DISABLE)) { radeon_wait_for_vblank(rdev, i); + WREG32(AVIVO_D1CRTC_UPDATE_LOCK + crtc_offsets[i], 1); tmp |= AVIVO_CRTC_DISP_READ_REQUEST_DISABLE; WREG32(AVIVO_D1CRTC_CONTROL + crtc_offsets[i], tmp); + WREG32(AVIVO_D1CRTC_UPDATE_LOCK + crtc_offsets[i], 0); } /* wait for the next frame */ frame_count = radeon_get_vblank_counter(rdev, i); @@ -313,6 +315,15 @@ void rv515_mc_stop(struct radeon_device *rdev, struct rv515_mc_save *save) break; udelay(1); } + + /* XXX this is a hack to avoid strange behavior with EFI on certain systems */ + WREG32(AVIVO_D1CRTC_UPDATE_LOCK + crtc_offsets[i], 1); + tmp = RREG32(AVIVO_D1CRTC_CONTROL + crtc_offsets[i]); + tmp &= ~AVIVO_CRTC_EN; + WREG32(AVIVO_D1CRTC_CONTROL + crtc_offsets[i], tmp); + WREG32(AVIVO_D1CRTC_UPDATE_LOCK + crtc_offsets[i], 0); + save->crtc_enabled[i] = false; + /* ***** */ } else { save->crtc_enabled[i] = false; } |