RADEON_CRTC_GEN_CNTL
PRINTREG(RADEON_CRTC_GEN_CNTL);
crtcg = radeonfb_get32(sc, RADEON_CRTC_GEN_CNTL);
radeonfb_put32(sc, RADEON_CRTC_GEN_CNTL, ((crtcg & ~RADEON_CRTC_EN) |
radeonfb_put32(sc, RADEON_CRTC_GEN_CNTL, crtcg);
gencntl = RADEON_CRTC_GEN_CNTL;
CLR32(sc, RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B);
PRINTREG(RADEON_CRTC_GEN_CNTL);
gen = GET32(sc, RADEON_CRTC_GEN_CNTL);
PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISP_REQ_EN_B);
PUT32(sc, RADEON_CRTC_GEN_CNTL, gen | RADEON_CRTC_DISPLAY_DIS);
PUT32(sc, RADEON_CRTC_GEN_CNTL, gen);
gencntl = RADEON_CRTC_GEN_CNTL;
PRINTREG(RADEON_CRTC_GEN_CNTL);