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drm/nva3/pm: fixup for NVAF special 

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2011-07-21 15:54:48 +10:00
parent 64e740bb3d
commit 378f85ed54
1 changed files with 7 additions and 1 deletions
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8
drivers/gpu/drm/nouveau/nva3_pm.c
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@ -46,8 +46,14 @@ read_clk(struct drm_device *dev, int clk, bool ignore_en)
u32 sctl, sdiv, sclk;
/* refclk for the 0xe8xx plls is a fixed frequency */
if (clk >= 0x40)
if (clk >= 0x40) {
if (dev_priv->chipset == 0xaf) {
/* no joke.. seriously.. sigh.. */
return nv_rd32(dev, 0x00471c) * 1000;
}
return dev_priv->crystal;
}
sctl = nv_rd32(dev, 0x4120 + (clk * 4));
if (!ignore_en && !(sctl & 0x00000100))