static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct opregion_asle *asle = dev_priv->opregion.asle;
u32 max;
if (!(bclp & ASLE_BCLP_VALID))
return ASLE_BACKLIGHT_FAILED;
bclp &= ASLE_BCLP_MSK;
if (bclp > 255)
return ASLE_BACKLIGHT_FAILED;
max = intel_panel_get_max_backlight(dev);
intel_panel_set_backlight(dev, bclp * max / 255);
asle->cblv = (bclp*0x64)/0xff | ASLE_CBLV_VALID;
return 0;
}
static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
u32 max;
DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);
if (!(bclp & ASLE_BCLP_VALID))
return ASLE_BACKLIGHT_FAILED;
bclp &= ASLE_BCLP_MSK;
if (bclp > 255)
return ASLE_BACKLIGHT_FAILED;
max = intel_panel_get_max_backlight(dev);
intel_panel_set_backlight(dev, bclp * max / 255);
asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;
return 0;
}