redonkable/alistair23-linux
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drm/nva3/pm: use crystal freq where appropriate

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2011-07-21 15:52:52 +10:00
parent f2cbe46f14
commit 64e740bb3d
1 changed files with 4 additions and 3 deletions
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7
drivers/gpu/drm/nouveau/nva3_pm.c
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@ -42,11 +42,12 @@ read_vco(struct drm_device *dev, int clk)
static u32
read_clk(struct drm_device *dev, int clk, bool ignore_en)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
u32 sctl, sdiv, sclk;
/* refclk for the 0xe8xx plls always 27KHz */
/* refclk for the 0xe8xx plls is a fixed frequency */
if (clk >= 0x40)
return 27000;
return dev_priv->crystal;
sctl = nv_rd32(dev, 0x4120 + (clk * 4));
if (!ignore_en && !(sctl & 0x00000100))
@ -54,7 +55,7 @@ read_clk(struct drm_device *dev, int clk, bool ignore_en)
switch (sctl & 0x00003000) {
case 0x00000000:
return 27000;
return dev_priv->crystal;
case 0x00002000:
if (sctl & 0x00000040)
return 108000;