diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/dev/pci/drm/radeon/evergreen.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sys/dev/pci/drm/radeon/evergreen.c b/sys/dev/pci/drm/radeon/evergreen.c index db4d010cbe9..26cef879b92 100644 --- a/sys/dev/pci/drm/radeon/evergreen.c +++ b/sys/dev/pci/drm/radeon/evergreen.c @@ -1341,6 +1341,7 @@ void evergreen_mc_stop(struct radeon_device *rdev, struct evergreen_mc_save *sav tmp = RREG32(EVERGREEN_CRTC_BLANK_CONTROL + crtc_offsets[i]); if (!(tmp & EVERGREEN_CRTC_BLANK_DATA_EN)) { radeon_wait_for_vblank(rdev, i); + WREG32(EVERGREEN_CRTC_UPDATE_LOCK + crtc_offsets[i], 1); tmp |= EVERGREEN_CRTC_BLANK_DATA_EN; WREG32(EVERGREEN_CRTC_UPDATE_LOCK + crtc_offsets[i], 1); WREG32(EVERGREEN_CRTC_BLANK_CONTROL + crtc_offsets[i], tmp); @@ -1350,8 +1351,8 @@ void evergreen_mc_stop(struct radeon_device *rdev, struct evergreen_mc_save *sav tmp = RREG32(EVERGREEN_CRTC_CONTROL + crtc_offsets[i]); if (!(tmp & EVERGREEN_CRTC_DISP_READ_REQUEST_DISABLE)) { radeon_wait_for_vblank(rdev, i); - tmp |= EVERGREEN_CRTC_DISP_READ_REQUEST_DISABLE; WREG32(EVERGREEN_CRTC_UPDATE_LOCK + crtc_offsets[i], 1); + tmp |= EVERGREEN_CRTC_DISP_READ_REQUEST_DISABLE; WREG32(EVERGREEN_CRTC_CONTROL + crtc_offsets[i], tmp); WREG32(EVERGREEN_CRTC_UPDATE_LOCK + crtc_offsets[i], 0); } @@ -1363,6 +1364,15 @@ void evergreen_mc_stop(struct radeon_device *rdev, struct evergreen_mc_save *sav break; DRM_UDELAY(1); } + + /* XXX this is a hack to avoid strange behavior with EFI on certain systems */ + WREG32(EVERGREEN_CRTC_UPDATE_LOCK + crtc_offsets[i], 1); + tmp = RREG32(EVERGREEN_CRTC_CONTROL + crtc_offsets[i]); + tmp &= ~EVERGREEN_CRTC_MASTER_EN; + WREG32(EVERGREEN_CRTC_CONTROL + crtc_offsets[i], tmp); + WREG32(EVERGREEN_CRTC_UPDATE_LOCK + crtc_offsets[i], 0); + save->crtc_enabled[i] = false; + /* ***** */ } else { save->crtc_enabled[i] = false; } |