RADEON_CRTC_DISP_REQ_EN_B
tmp |= RADEON_CRTC_DISP_REQ_EN_B;
tmp &= ~RADEON_CRTC_DISP_REQ_EN_B;
(RADEON_CRTC_DISP_REQ_EN_B |
RADEON_CRTC_DISP_REQ_EN_B));
WREG32_P(RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B, ~(RADEON_CRTC_EN |
RADEON_CRTC_DISP_REQ_EN_B));
| RADEON_CRTC_DISP_REQ_EN_B