Merge branch 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...

[mv-sheeva.git] / drivers / gpu / drm / i915 / intel_panel.c

diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index 7350ec2515c6947ba84dd9da432c6230c0787cdb..c65992df458d6a905c1bab7dcb38f38d9dfeab49 100644 (file)
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -250,3 +250,34 @@ void intel_panel_set_backlight(struct drm_device *dev, u32 level)
                tmp &= ~BACKLIGHT_DUTY_CYCLE_MASK;
        I915_WRITE(BLC_PWM_CTL, tmp | level);
 }
+
+void intel_panel_disable_backlight(struct drm_device *dev)
+{
+       struct drm_i915_private *dev_priv = dev->dev_private;
+
+       if (dev_priv->backlight_enabled) {
+               dev_priv->backlight_level = intel_panel_get_backlight(dev);
+               dev_priv->backlight_enabled = false;
+       }
+
+       intel_panel_set_backlight(dev, 0);
+}
+
+void intel_panel_enable_backlight(struct drm_device *dev)
+{
+       struct drm_i915_private *dev_priv = dev->dev_private;
+
+       if (dev_priv->backlight_level == 0)
+               dev_priv->backlight_level = intel_panel_get_max_backlight(dev);
+
+       intel_panel_set_backlight(dev, dev_priv->backlight_level);
+       dev_priv->backlight_enabled = true;
+}
+
+void intel_panel_setup_backlight(struct drm_device *dev)
+{
+       struct drm_i915_private *dev_priv = dev->dev_private;
+
+       dev_priv->backlight_level = intel_panel_get_backlight(dev);
+       dev_priv->backlight_enabled = dev_priv->backlight_level != 0;
+}