diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv40_pm.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv40_pm.c | 50 |
1 files changed, 48 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/nv40_pm.c b/drivers/gpu/drm/nouveau/nv40_pm.c index e676b0d5347..c7615381c5d 100644 --- a/drivers/gpu/drm/nouveau/nv40_pm.c +++ b/drivers/gpu/drm/nouveau/nv40_pm.c @@ -222,7 +222,7 @@ nv40_pm_gr_idle(void *data) return true; } -void +int nv40_pm_clocks_set(struct drm_device *dev, void *pre_state) { struct drm_nouveau_private *dev_priv = dev->dev_private; @@ -231,7 +231,7 @@ nv40_pm_clocks_set(struct drm_device *dev, void *pre_state) struct bit_entry M; u32 crtc_mask = 0; u8 sr1[2]; - int i; + int i, ret = -EAGAIN; /* determine which CRTCs are active, fetch VGA_SR1 for each */ for (i = 0; i < 2; i++) { @@ -263,6 +263,8 @@ nv40_pm_clocks_set(struct drm_device *dev, void *pre_state) if (!nv_wait_cb(dev, nv40_pm_gr_idle, dev)) goto resume; + ret = 0; + /* set engine clocks */ nv_mask(dev, 0x00c040, 0x00000333, 0x00000000); nv_wr32(dev, 0x004004, info->npll_coef); @@ -345,4 +347,48 @@ resume: spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags); kfree(info); + return ret; +} + +int +nv40_pm_pwm_get(struct drm_device *dev, int line, u32 *divs, u32 *duty) +{ + if (line == 2) { + u32 reg = nv_rd32(dev, 0x0010f0); + if (reg & 0x80000000) { + *duty = (reg & 0x7fff0000) >> 16; + *divs = (reg & 0x00007fff); + return 0; + } + } else + if (line == 9) { + u32 reg = nv_rd32(dev, 0x0015f4); + if (reg & 0x80000000) { + *divs = nv_rd32(dev, 0x0015f8); + *duty = (reg & 0x7fffffff); + return 0; + } + } else { + NV_ERROR(dev, "unknown pwm ctrl for gpio %d\n", line); + return -ENODEV; + } + + return -EINVAL; +} + +int +nv40_pm_pwm_set(struct drm_device *dev, int line, u32 divs, u32 duty) +{ + if (line == 2) { + nv_wr32(dev, 0x0010f0, 0x80000000 | (duty << 16) | divs); + } else + if (line == 9) { + nv_wr32(dev, 0x0015f8, divs); + nv_wr32(dev, 0x0015f4, duty | 0x80000000); + } else { + NV_ERROR(dev, "unknown pwm ctrl for gpio %d\n", line); + return -ENODEV; + } + + return 0; } |