diff options
| -rw-r--r-- | src/i830_display.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/i830_display.c b/src/i830_display.c index e4d8e9f3..37a6e32e 100644 --- a/src/i830_display.c +++ b/src/i830_display.c @@ -507,6 +507,7 @@ i830_crtc_dpms(xf86CrtcPtr crtc, int mode) /* Enable the DPLL */ temp = INREG(dpll_reg); OUTREG(dpll_reg, temp | DPLL_VCO_ENABLE); + (void)INREG(dpll_reg); /* write posting */ /* Wait for the clocks to stabilize. */ usleep(150); @@ -538,6 +539,7 @@ i830_crtc_dpms(xf86CrtcPtr crtc, int mode) /* Flush the plane changes */ OUTREG(dspbase_reg, INREG(dspbase_reg)); + (void)INREG(dspbase_reg); /* write posting */ if (!IS_I9XX(pI830)) { /* Wait for vblank for the disable to take effect */ @@ -547,12 +549,17 @@ i830_crtc_dpms(xf86CrtcPtr crtc, int mode) /* Next, disable display pipes */ temp = INREG(pipeconf_reg); OUTREG(pipeconf_reg, temp & ~PIPEACONF_ENABLE); + (void)INREG(pipeconf_reg); /* write posting */ /* Wait for vblank for the disable to take effect. */ i830WaitForVblank(pScrn); temp = INREG(dpll_reg); OUTREG(dpll_reg, temp & ~DPLL_VCO_ENABLE); + (void)INREG(dpll_reg); /* write posting */ + + /* Wait for the clocks to turn off. */ + usleep(150); break; } } @@ -751,6 +758,15 @@ i830_crtc_mode_set(xf86CrtcPtr crtc, DisplayModePtr mode, OUTREG(fp_reg, fp); OUTREG(dpll_reg, dpll); + + /* Magic re-write of the register for the Mac Mini. Without this, the + * first X invocation after a cold boot will stick in 4x pixel multiply + * mode. Alternatives that don't work include sleeping and doing an + * INREG for presumable pci write posting magic before and after the dpll + * write above. + */ + OUTREG(dpll_reg, dpll); + if (IS_I965G(pI830)) { int sdvo_pixel_multiply = adjusted_mode->Clock / mode->Clock; OUTREG(dpll_md_reg, (0 << DPLL_MD_UDI_DIVIDER_SHIFT) | |