diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2011-06-23 16:37:00 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2011-09-20 16:11:55 +1000 |
| commit | 8ce51fcfee2355cc38ea6fd3062d94bb38dfbaf0 (patch) | |
| tree | 0bff98ac2f51951a7676a26b03f003c421b92a51 /drivers/gpu/drm/nouveau/nvc0_pm.c | |
| parent | 59ef9742f6b24d1f3062b975ec959512519f8987 (diff) | |
drm/nvc0/pm: minor clock readback fixes
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvc0_pm.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvc0_pm.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/nvc0_pm.c b/drivers/gpu/drm/nouveau/nvc0_pm.c index 6dc1a974b577..929aded35cb5 100644 --- a/drivers/gpu/drm/nouveau/nvc0_pm.c +++ b/drivers/gpu/drm/nouveau/nvc0_pm.c @@ -42,12 +42,16 @@ read_vco(struct drm_device *dev, u32 dsrc) static u32 read_pll(struct drm_device *dev, u32 pll) { + u32 ctrl = nv_rd32(dev, pll + 0); u32 coef = nv_rd32(dev, pll + 4); u32 P = (coef & 0x003f0000) >> 16; u32 N = (coef & 0x0000ff00) >> 8; u32 M = (coef & 0x000000ff) >> 0; u32 sclk, doff; + if (!(ctrl & 0x00000001)) + return 0; + switch (pll & 0xfff000) { case 0x00e000: sclk = 27000; @@ -91,12 +95,12 @@ read_div(struct drm_device *dev, int doff, u32 dsrc, u32 dctl) return 100000; case 3: if (sctl & 0x80000000) { - u32 sclk = read_vco(dev, dsrc); + u32 sclk = read_vco(dev, dsrc + (doff * 4)); u32 sdiv = (sctl & 0x0000003f) + 2; return (sclk * 2) / sdiv; } - return read_vco(dev, dsrc); + return read_vco(dev, dsrc + (doff * 4)); default: return 0; } |