diff options
Diffstat (limited to 'drivers/video/matrox/g450_pll.c')
| -rw-r--r-- | drivers/video/matrox/g450_pll.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/drivers/video/matrox/g450_pll.c b/drivers/video/matrox/g450_pll.c index 8073a73f6f3..440272ad10e 100644 --- a/drivers/video/matrox/g450_pll.c +++ b/drivers/video/matrox/g450_pll.c @@ -316,14 +316,24 @@ static int __g450_setclk(WPMINFO unsigned int fout, unsigned int pll, case M_PIXEL_PLL_B: case M_PIXEL_PLL_C: { - u_int8_t tmp; + u_int8_t tmp, xpwrctrl; unsigned long flags; matroxfb_DAC_lock_irqsave(flags); + + xpwrctrl = matroxfb_DAC_in(PMINFO M1064_XPWRCTRL); + matroxfb_DAC_out(PMINFO M1064_XPWRCTRL, xpwrctrl & ~M1064_XPWRCTRL_PANELPDN); + mga_outb(M_SEQ_INDEX, M_SEQ1); + mga_outb(M_SEQ_DATA, mga_inb(M_SEQ_DATA) | M_SEQ1_SCROFF); tmp = matroxfb_DAC_in(PMINFO M1064_XPIXCLKCTRL); + tmp |= M1064_XPIXCLKCTRL_DIS; if (!(tmp & M1064_XPIXCLKCTRL_PLL_UP)) { - matroxfb_DAC_out(PMINFO M1064_XPIXCLKCTRL, tmp | M1064_XPIXCLKCTRL_PLL_UP); + tmp |= M1064_XPIXCLKCTRL_PLL_UP; } + matroxfb_DAC_out(PMINFO M1064_XPIXCLKCTRL, tmp); + matroxfb_DAC_out(PMINFO M1064_XDVICLKCTRL, 0); + matroxfb_DAC_out(PMINFO M1064_XPWRCTRL, xpwrctrl); + matroxfb_DAC_unlock_irqrestore(flags); } { @@ -418,6 +428,15 @@ static int __g450_setclk(WPMINFO unsigned int fout, unsigned int pll, frequency to higher - with <= lowest wins, while with < highest one wins */ if (delta <= deltaarray[idx-1]) { + /* all else being equal except VCO, + * choose VCO not near (within 1/16th or so) VCOmin + * (freqs near VCOmin aren't as stable) + */ + if (delta == deltaarray[idx-1] + && vco != g450_mnp2vco(PMINFO mnparray[idx-1]) + && vco < (pi->vcomin * 17 / 16)) { + break; + } mnparray[idx] = mnparray[idx-1]; deltaarray[idx] = deltaarray[idx-1]; } else { |