drm/nv41/pm: implement a second type of fanspeed pwm
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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9232969e19
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04de6a0461
3 changed files with 36 additions and 0 deletions
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@ -58,6 +58,8 @@ void *nv40_pm_clocks_pre(struct drm_device *, struct nouveau_pm_level *);
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void nv40_pm_clocks_set(struct drm_device *, void *);
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int nv40_pm_fanspeed_get(struct drm_device *);
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int nv40_pm_fanspeed_set(struct drm_device *, int percent);
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int nv41_pm_fanspeed_get(struct drm_device *);
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int nv41_pm_fanspeed_set(struct drm_device *, int percent);
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/* nv50_pm.c */
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int nv50_pm_clock_get(struct drm_device *, u32 id);
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@ -298,6 +298,13 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
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engine->pm.fanspeed_get = nv40_pm_fanspeed_get;
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engine->pm.fanspeed_set = nv40_pm_fanspeed_set;
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break;
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case 0x42:
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case 0x43:
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case 0x47:
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case 0x4b:
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engine->pm.fanspeed_get = nv41_pm_fanspeed_get;
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engine->pm.fanspeed_set = nv41_pm_fanspeed_set;
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break;
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default:
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break;
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}
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@ -372,3 +372,30 @@ nv40_pm_fanspeed_set(struct drm_device *dev, int percent)
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nv_wr32(dev, 0x0010f0, 0x80000000 | (duty << 16) | divs);
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return 0;
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}
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int
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nv41_pm_fanspeed_get(struct drm_device *dev)
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{
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u32 reg = nv_rd32(dev, 0x0015f4);
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if (reg & 0x80000000) {
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u32 divs = nv_rd32(dev, 0x0015f8);
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u32 duty = (reg & 0x7fffffff);
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if (divs && divs >= duty)
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return ((divs - duty) * 100) / divs;
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}
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return 100;
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}
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int
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nv41_pm_fanspeed_set(struct drm_device *dev, int percent)
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{
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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u32 divs = pm->pwm_divisor;
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u32 duty = ((100 - percent) * divs) / 100;
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nv_wr32(dev, 0x0015f8, divs);
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nv_wr32(dev, 0x0015f4, duty | 0x80000000);
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return 0;
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}
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