diff options
| author | Alex Deucher <agd5f@yahoo.com> | 2004-12-24 18:26:19 +0000 |
|---|---|---|
| committer | Alex Deucher <agd5f@yahoo.com> | 2004-12-24 18:26:19 +0000 |
| commit | 414c035a965b9db15656058c0e9cfeb3acf0158f (patch) | |
| tree | 2f4c843c6ffed682d04f5455aa90394b148dfef5 /src/radeon_driver.c | |
| parent | 7c7b278883676412f5709cf812587b1408628133 (diff) | |
- Fix MCLK / SCLK calculation (Benjamin Herrenschmidt) bug 2144
- formatting cleanup
Diffstat (limited to 'src/radeon_driver.c')
| -rw-r--r-- | src/radeon_driver.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/src/radeon_driver.c b/src/radeon_driver.c index fffcfa8..760560c 100644 --- a/src/radeon_driver.c +++ b/src/radeon_driver.c @@ -1357,23 +1357,19 @@ static Bool RADEONProbePLLParameters(ScrnInfoPtr pScrn) } /* Calculate "base" xclk straight from MPLL, though that isn't - * really useful (hopefully) + * really useful (hopefully). This isn't called XCLK anymore on + * radeon's... */ mpll_fb_div = (tmp & 0xff00) >> 8; spll_fb_div = (tmp & 0xff0000) >> 16; M = (tmp & 0xff); - xclk = RADEONDiv((2 * mpll_fb_div * xtal), (2 * M)); + xclk = RADEONDiv((2 * mpll_fb_div * xtal), (M)); /* - * Calculate MCLK based on MCLK-A and SCLK - * - * NOTE: It is not clear at this point wether we should put in sclk and - * mclk the raw SPLL and MPLL output values, or the divided values according - * to the source selection iN MCLK_CNTL and SCLK_CNTL. I'm putting the divided - * values for now, waiting for a definitive answer from ATI + * Calculate MCLK based on MCLK-A */ - mpll = ((float)mpll_fb_div * (float)(xtal / 100.0)) / (float)M; - spll = ((float)spll_fb_div * (float)(xtal / 100.0)) / (float)M; + mpll = (2.0 * (float)mpll_fb_div * (xtal / 100.0)) / (float)M; + spll = (2.0 * (float)spll_fb_div * (xtal / 100.0)) / (float)M; tmp = INPLL(pScrn, RADEON_MCLK_CNTL) & 0x7; switch(tmp) { @@ -1388,6 +1384,9 @@ static Bool RADEONProbePLLParameters(ScrnInfoPtr pScrn) " setting %d, can't probe MCLK value !\n", tmp); } + /* + * Calculate SCLK + */ tmp = INPLL(pScrn, RADEON_SCLK_CNTL) & 0x7; switch(tmp) { case 1: info->sclk = spll; break; @@ -6844,7 +6843,7 @@ static Bool RADEONInitCrtc2Registers(ScrnInfoPtr pScrn, RADEONSavePtr save, save->fp2_gen_cntl = info->SavedReg.fp2_gen_cntl | RADEON_FP2_ON; save->fp2_gen_cntl &= ~(RADEON_FP2_BLANK_EN); - if (info->ChipFamily == CHIP_FAMILY_R200 || + if ((info->ChipFamily == CHIP_FAMILY_R200) || IS_R300_VARIANT) { save->fp2_gen_cntl &= ~(R200_FP2_SOURCE_SEL_MASK | RADEON_FP2_DVO_RATE_SEL_SDR); |