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author | Ingo Molnar <mingo@elte.hu> | 2010-12-23 09:48:41 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2010-12-23 09:48:41 +0100 |
commit | 26e20a108caca6231c6a5ec659f815a866904751 (patch) | |
tree | 36932c208a9e8994bfd7ed4eaf48b9c33f71fbe3 /drivers/gpu/drm/nouveau/nv50_calc.c | |
parent | 691513f70d3957939a318da970987b876c720861 (diff) | |
parent | 90a8a73c06cc32b609a880d48449d7083327e11a (diff) | |
download | linux-stable-26e20a108caca6231c6a5ec659f815a866904751.tar.gz linux-stable-26e20a108caca6231c6a5ec659f815a866904751.tar.bz2 linux-stable-26e20a108caca6231c6a5ec659f815a866904751.zip |
Merge commit 'v2.6.37-rc7' into x86/security
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_calc.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nv50_calc.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_calc.c b/drivers/gpu/drm/nouveau/nv50_calc.c index 2cdc2bfe7179..de81151648f8 100644 --- a/drivers/gpu/drm/nouveau/nv50_calc.c +++ b/drivers/gpu/drm/nouveau/nv50_calc.c @@ -51,24 +51,28 @@ nv50_calc_pll2(struct drm_device *dev, struct pll_lims *pll, int clk, int *N, int *fN, int *M, int *P) { fixed20_12 fb_div, a, b; + u32 refclk = pll->refclk / 10; + u32 max_vco_freq = pll->vco1.maxfreq / 10; + u32 max_vco_inputfreq = pll->vco1.max_inputfreq / 10; + clk /= 10; - *P = pll->vco1.maxfreq / clk; + *P = max_vco_freq / clk; if (*P > pll->max_p) *P = pll->max_p; if (*P < pll->min_p) *P = pll->min_p; - /* *M = ceil(refclk / pll->vco.max_inputfreq); */ - a.full = dfixed_const(pll->refclk); - b.full = dfixed_const(pll->vco1.max_inputfreq); + /* *M = floor((refclk + max_vco_inputfreq) / max_vco_inputfreq); */ + a.full = dfixed_const(refclk + max_vco_inputfreq); + b.full = dfixed_const(max_vco_inputfreq); a.full = dfixed_div(a, b); - a.full = dfixed_ceil(a); + a.full = dfixed_floor(a); *M = dfixed_trunc(a); /* fb_div = (vco * *M) / refclk; */ fb_div.full = dfixed_const(clk * *P); fb_div.full = dfixed_mul(fb_div, a); - a.full = dfixed_const(pll->refclk); + a.full = dfixed_const(refclk); fb_div.full = dfixed_div(fb_div, a); /* *N = floor(fb_div); */ |