diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index c80bffc..a821949 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -338,78 +338,116 @@
 	return 0;
 }
 
-/* XXX: query mode clock or hardware clock and program max PWM appropriately
- * when it's 0.
- */
-static u32 i915_read_blc_pwm_ctl(struct drm_device *dev, enum pipe pipe)
+static u32 pch_get_max_backlight(struct intel_connector *connector)
 {
+	struct drm_device *dev = connector->base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	u32 val;
 
-	WARN_ON_SMP(!spin_is_locked(&dev_priv->backlight_lock));
-
-	/* Restore the CTL value if it lost, e.g. GPU reset */
-
-	if (HAS_PCH_SPLIT(dev_priv->dev)) {
-		val = I915_READ(BLC_PWM_PCH_CTL2);
-		if (dev_priv->regfile.saveBLC_PWM_CTL2 == 0) {
-			dev_priv->regfile.saveBLC_PWM_CTL2 = val;
-		} else if (val == 0) {
-			val = dev_priv->regfile.saveBLC_PWM_CTL2;
-			I915_WRITE(BLC_PWM_PCH_CTL2, val);
-		}
-	} else if (IS_VALLEYVIEW(dev)) {
-		val = I915_READ(VLV_BLC_PWM_CTL(pipe));
-		if (dev_priv->regfile.saveBLC_PWM_CTL == 0) {
-			dev_priv->regfile.saveBLC_PWM_CTL = val;
-			dev_priv->regfile.saveBLC_PWM_CTL2 =
-				I915_READ(VLV_BLC_PWM_CTL2(pipe));
-		} else if (val == 0) {
-			val = dev_priv->regfile.saveBLC_PWM_CTL;
-			I915_WRITE(VLV_BLC_PWM_CTL(pipe), val);
-			I915_WRITE(VLV_BLC_PWM_CTL2(pipe),
-				   dev_priv->regfile.saveBLC_PWM_CTL2);
-		}
-
-		if (!val)
-			val = 0x0f42ffff;
-	} else {
-		val = I915_READ(BLC_PWM_CTL);
-		if (dev_priv->regfile.saveBLC_PWM_CTL == 0) {
-			dev_priv->regfile.saveBLC_PWM_CTL = val;
-			if (INTEL_INFO(dev)->gen >= 4)
-				dev_priv->regfile.saveBLC_PWM_CTL2 =
-					I915_READ(BLC_PWM_CTL2);
-		} else if (val == 0) {
-			val = dev_priv->regfile.saveBLC_PWM_CTL;
-			I915_WRITE(BLC_PWM_CTL, val);
-			if (INTEL_INFO(dev)->gen >= 4)
-				I915_WRITE(BLC_PWM_CTL2,
-					   dev_priv->regfile.saveBLC_PWM_CTL2);
-		}
+	val = I915_READ(BLC_PWM_PCH_CTL2);
+	if (dev_priv->regfile.saveBLC_PWM_CTL2 == 0) {
+		dev_priv->regfile.saveBLC_PWM_CTL2 = val;
+	} else if (val == 0) {
+		val = dev_priv->regfile.saveBLC_PWM_CTL2;
+		I915_WRITE(BLC_PWM_PCH_CTL2, val);
 	}
 
+	val >>= 16;
+
 	return val;
 }
 
-static u32 intel_panel_get_max_backlight(struct drm_device *dev,
-					 enum pipe pipe)
+static u32 i9xx_get_max_backlight(struct intel_connector *connector)
 {
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	u32 val;
+
+	val = I915_READ(BLC_PWM_CTL);
+	if (dev_priv->regfile.saveBLC_PWM_CTL == 0) {
+		dev_priv->regfile.saveBLC_PWM_CTL = val;
+	} else if (val == 0) {
+		val = dev_priv->regfile.saveBLC_PWM_CTL;
+		I915_WRITE(BLC_PWM_CTL, val);
+	}
+
+	val >>= 17;
+
+	if (is_backlight_combination_mode(dev))
+		val *= 0xff;
+
+	return val;
+}
+
+static u32 i965_get_max_backlight(struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	u32 val;
+
+	val = I915_READ(BLC_PWM_CTL);
+	if (dev_priv->regfile.saveBLC_PWM_CTL == 0) {
+		dev_priv->regfile.saveBLC_PWM_CTL = val;
+		dev_priv->regfile.saveBLC_PWM_CTL2 = I915_READ(BLC_PWM_CTL2);
+	} else if (val == 0) {
+		val = dev_priv->regfile.saveBLC_PWM_CTL;
+		I915_WRITE(BLC_PWM_CTL, val);
+		I915_WRITE(BLC_PWM_CTL2, dev_priv->regfile.saveBLC_PWM_CTL2);
+	}
+
+	val >>= 16;
+
+	if (is_backlight_combination_mode(dev))
+		val *= 0xff;
+
+	return val;
+}
+
+static u32 _vlv_get_max_backlight(struct drm_device *dev, enum pipe pipe)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	u32 val;
+
+	val = I915_READ(VLV_BLC_PWM_CTL(pipe));
+	if (dev_priv->regfile.saveBLC_PWM_CTL == 0) {
+		dev_priv->regfile.saveBLC_PWM_CTL = val;
+		dev_priv->regfile.saveBLC_PWM_CTL2 =
+			I915_READ(VLV_BLC_PWM_CTL2(pipe));
+	} else if (val == 0) {
+		val = dev_priv->regfile.saveBLC_PWM_CTL;
+		I915_WRITE(VLV_BLC_PWM_CTL(pipe), val);
+		I915_WRITE(VLV_BLC_PWM_CTL2(pipe),
+			   dev_priv->regfile.saveBLC_PWM_CTL2);
+	}
+
+	if (!val)
+		val = 0x0f42ffff;
+
+	val >>= 16;
+
+	return val;
+}
+
+static u32 vlv_get_max_backlight(struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+	enum pipe pipe = intel_get_pipe_from_connector(connector);
+
+	return _vlv_get_max_backlight(dev, pipe);
+}
+
+/* XXX: query mode clock or hardware clock and program max PWM appropriately
+ * when it's 0.
+ */
+static u32 intel_panel_get_max_backlight(struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
 	u32 max;
 
-	max = i915_read_blc_pwm_ctl(dev, pipe);
+	WARN_ON_SMP(!spin_is_locked(&dev_priv->backlight_lock));
 
-	if (HAS_PCH_SPLIT(dev)) {
-		max >>= 16;
-	} else {
-		if (INTEL_INFO(dev)->gen < 4)
-			max >>= 17;
-		else
-			max >>= 16;
-
-		if (is_backlight_combination_mode(dev))
-			max *= 0xff;
-	}
+	max = dev_priv->display.get_max_backlight(connector);
 
 	DRM_DEBUG_DRIVER("max backlight PWM = %d\n", max);
 
@@ -423,9 +461,10 @@
 	"to dri-devel@lists.freedesktop.org, if your machine needs it. "
 	"It will then be included in an upcoming module version.");
 module_param_named(invert_brightness, i915_panel_invert_brightness, int, 0600);
-static u32 intel_panel_compute_brightness(struct drm_device *dev,
-					  enum pipe pipe, u32 val)
+static u32 intel_panel_compute_brightness(struct intel_connector *connector,
+					  u32 val)
 {
+	struct drm_device *dev = connector->base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
 	if (i915_panel_invert_brightness < 0)
@@ -433,7 +472,7 @@
 
 	if (i915_panel_invert_brightness > 0 ||
 	    dev_priv->quirks & QUIRK_INVERT_BRIGHTNESS) {
-		u32 max = intel_panel_get_max_backlight(dev, pipe);
+		u32 max = intel_panel_get_max_backlight(connector);
 		if (max)
 			return max - val;
 	}
@@ -441,37 +480,60 @@
 	return val;
 }
 
-static u32 intel_panel_get_backlight(struct drm_device *dev,
-				     enum pipe pipe)
+static u32 pch_get_backlight(struct intel_connector *connector)
 {
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+
+	return I915_READ(BLC_PWM_CPU_CTL) & BACKLIGHT_DUTY_CYCLE_MASK;
+}
+
+static u32 i9xx_get_backlight(struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	u32 val;
+
+	val = I915_READ(BLC_PWM_CTL) & BACKLIGHT_DUTY_CYCLE_MASK;
+	if (INTEL_INFO(dev)->gen < 4)
+		val >>= 1;
+
+	if (is_backlight_combination_mode(dev)) {
+		u8 lbpc;
+
+		pci_read_config_byte(dev->pdev, PCI_LBPC, &lbpc);
+		val *= lbpc;
+	}
+
+	return val;
+}
+
+static u32 _vlv_get_backlight(struct drm_device *dev, enum pipe pipe)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+
+	return I915_READ(VLV_BLC_PWM_CTL(pipe)) & BACKLIGHT_DUTY_CYCLE_MASK;
+}
+
+static u32 vlv_get_backlight(struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+	enum pipe pipe = intel_get_pipe_from_connector(connector);
+
+	return _vlv_get_backlight(dev, pipe);
+}
+
+static u32 intel_panel_get_backlight(struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	u32 val;
 	unsigned long flags;
-	int reg;
 
 	spin_lock_irqsave(&dev_priv->backlight_lock, flags);
 
-	if (HAS_PCH_SPLIT(dev)) {
-		val = I915_READ(BLC_PWM_CPU_CTL) & BACKLIGHT_DUTY_CYCLE_MASK;
-	} else {
-		if (IS_VALLEYVIEW(dev))
-			reg = VLV_BLC_PWM_CTL(pipe);
-		else
-			reg = BLC_PWM_CTL;
-
-		val = I915_READ(reg) & BACKLIGHT_DUTY_CYCLE_MASK;
-		if (INTEL_INFO(dev)->gen < 4)
-			val >>= 1;
-
-		if (is_backlight_combination_mode(dev)) {
-			u8 lbpc;
-
-			pci_read_config_byte(dev->pdev, PCI_LBPC, &lbpc);
-			val *= lbpc;
-		}
-	}
-
-	val = intel_panel_compute_brightness(dev, pipe, val);
+	val = dev_priv->display.get_backlight(connector);
+	val = intel_panel_compute_brightness(connector, val);
 
 	spin_unlock_irqrestore(&dev_priv->backlight_lock, flags);
 
@@ -479,28 +541,24 @@
 	return val;
 }
 
-static void intel_pch_panel_set_backlight(struct drm_device *dev, u32 level)
+static void pch_set_backlight(struct intel_connector *connector, u32 level)
 {
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	u32 val = I915_READ(BLC_PWM_CPU_CTL) & ~BACKLIGHT_DUTY_CYCLE_MASK;
-	I915_WRITE(BLC_PWM_CPU_CTL, val | level);
-}
-
-static void intel_panel_actually_set_backlight(struct drm_device *dev,
-					       enum pipe pipe, u32 level)
-{
+	struct drm_device *dev = connector->base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	u32 tmp;
-	int reg;
 
-	DRM_DEBUG_DRIVER("set backlight PWM = %d\n", level);
-	level = intel_panel_compute_brightness(dev, pipe, level);
+	tmp = I915_READ(BLC_PWM_CPU_CTL) & ~BACKLIGHT_DUTY_CYCLE_MASK;
+	I915_WRITE(BLC_PWM_CPU_CTL, tmp | level);
+}
 
-	if (HAS_PCH_SPLIT(dev))
-		return intel_pch_panel_set_backlight(dev, level);
+static void i9xx_set_backlight(struct intel_connector *connector, u32 level)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	u32 tmp;
 
 	if (is_backlight_combination_mode(dev)) {
-		u32 max = intel_panel_get_max_backlight(dev, pipe);
+		u32 max = intel_panel_get_max_backlight(connector);
 		u8 lbpc;
 
 		/* we're screwed, but keep behaviour backwards compatible */
@@ -512,16 +570,34 @@
 		pci_write_config_byte(dev->pdev, PCI_LBPC, lbpc);
 	}
 
-	if (IS_VALLEYVIEW(dev))
-		reg = VLV_BLC_PWM_CTL(pipe);
-	else
-		reg = BLC_PWM_CTL;
-
-	tmp = I915_READ(reg);
 	if (INTEL_INFO(dev)->gen < 4)
 		level <<= 1;
-	tmp &= ~BACKLIGHT_DUTY_CYCLE_MASK;
-	I915_WRITE(reg, tmp | level);
+
+	tmp = I915_READ(BLC_PWM_CTL) & ~BACKLIGHT_DUTY_CYCLE_MASK;
+	I915_WRITE(BLC_PWM_CTL, tmp | level);
+}
+
+static void vlv_set_backlight(struct intel_connector *connector, u32 level)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	enum pipe pipe = intel_get_pipe_from_connector(connector);
+	u32 tmp;
+
+	tmp = I915_READ(VLV_BLC_PWM_CTL(pipe)) & ~BACKLIGHT_DUTY_CYCLE_MASK;
+	I915_WRITE(VLV_BLC_PWM_CTL(pipe), tmp | level);
+}
+
+static void
+intel_panel_actually_set_backlight(struct intel_connector *connector, u32 level)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+
+	DRM_DEBUG_DRIVER("set backlight PWM = %d\n", level);
+
+	level = intel_panel_compute_brightness(connector, level);
+	dev_priv->display.set_backlight(connector, level);
 }
 
 /* set backlight brightness to level in range [0..max] */
@@ -540,7 +616,7 @@
 
 	spin_lock_irqsave(&dev_priv->backlight_lock, flags);
 
-	freq = intel_panel_get_max_backlight(dev, pipe);
+	freq = intel_panel_get_max_backlight(connector);
 	if (!freq) {
 		/* we are screwed, bail out */
 		goto out;
@@ -557,11 +633,45 @@
 		panel->backlight.device->props.brightness = level;
 
 	if (panel->backlight.enabled)
-		intel_panel_actually_set_backlight(dev, pipe, level);
+		intel_panel_actually_set_backlight(connector, level);
 out:
 	spin_unlock_irqrestore(&dev_priv->backlight_lock, flags);
 }
 
+static void pch_disable_backlight(struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	u32 tmp;
+
+	tmp = I915_READ(BLC_PWM_CPU_CTL2);
+	I915_WRITE(BLC_PWM_CPU_CTL2, tmp & ~BLM_PWM_ENABLE);
+
+	tmp = I915_READ(BLC_PWM_PCH_CTL1);
+	I915_WRITE(BLC_PWM_PCH_CTL1, tmp & ~BLM_PCH_PWM_ENABLE);
+}
+
+static void i965_disable_backlight(struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	u32 tmp;
+
+	tmp = I915_READ(BLC_PWM_CTL2);
+	I915_WRITE(BLC_PWM_CTL2, tmp & ~BLM_PWM_ENABLE);
+}
+
+static void vlv_disable_backlight(struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	enum pipe pipe = intel_get_pipe_from_connector(connector);
+	u32 tmp;
+
+	tmp = I915_READ(VLV_BLC_PWM_CTL2(pipe));
+	I915_WRITE(VLV_BLC_PWM_CTL2(pipe), tmp & ~BLM_PWM_ENABLE);
+}
+
 void intel_panel_disable_backlight(struct intel_connector *connector)
 {
 	struct drm_device *dev = connector->base.dev;
@@ -587,38 +697,108 @@
 	spin_lock_irqsave(&dev_priv->backlight_lock, flags);
 
 	panel->backlight.enabled = false;
-	intel_panel_actually_set_backlight(dev, pipe, 0);
+	intel_panel_actually_set_backlight(connector, 0);
 
-	if (INTEL_INFO(dev)->gen >= 4) {
-		uint32_t reg, tmp;
-
-		if (HAS_PCH_SPLIT(dev))
-			reg = BLC_PWM_CPU_CTL2;
-		else if (IS_VALLEYVIEW(dev))
-			reg = VLV_BLC_PWM_CTL2(pipe);
-		else
-			reg = BLC_PWM_CTL2;
-
-		I915_WRITE(reg, I915_READ(reg) & ~BLM_PWM_ENABLE);
-
-		if (HAS_PCH_SPLIT(dev)) {
-			tmp = I915_READ(BLC_PWM_PCH_CTL1);
-			tmp &= ~BLM_PCH_PWM_ENABLE;
-			I915_WRITE(BLC_PWM_PCH_CTL1, tmp);
-		}
-	}
+	if (dev_priv->display.disable_backlight)
+		dev_priv->display.disable_backlight(connector);
 
 	spin_unlock_irqrestore(&dev_priv->backlight_lock, flags);
 }
 
+static void pch_enable_backlight(struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	enum pipe pipe = intel_get_pipe_from_connector(connector);
+	enum transcoder cpu_transcoder =
+		intel_pipe_to_cpu_transcoder(dev_priv, pipe);
+	u32 tmp;
+
+	tmp = I915_READ(BLC_PWM_CPU_CTL2);
+
+	/* Note that this can also get called through dpms changes. And
+	 * we don't track the backlight dpms state, hence check whether
+	 * we have to do anything first. */
+	if (tmp & BLM_PWM_ENABLE)
+		return;
+
+	if (INTEL_INFO(dev)->num_pipes == 3)
+		tmp &= ~BLM_PIPE_SELECT_IVB;
+	else
+		tmp &= ~BLM_PIPE_SELECT;
+
+	if (cpu_transcoder == TRANSCODER_EDP)
+		tmp |= BLM_TRANSCODER_EDP;
+	else
+		tmp |= BLM_PIPE(cpu_transcoder);
+	tmp &= ~BLM_PWM_ENABLE;
+
+	I915_WRITE(BLC_PWM_CPU_CTL2, tmp);
+	POSTING_READ(BLC_PWM_CPU_CTL2);
+	I915_WRITE(BLC_PWM_CPU_CTL2, tmp | BLM_PWM_ENABLE);
+
+	if (!(dev_priv->quirks & QUIRK_NO_PCH_PWM_ENABLE)) {
+		tmp = I915_READ(BLC_PWM_PCH_CTL1);
+		tmp |= BLM_PCH_PWM_ENABLE;
+		tmp &= ~BLM_PCH_OVERRIDE_ENABLE;
+		I915_WRITE(BLC_PWM_PCH_CTL1, tmp);
+	}
+}
+
+static void i965_enable_backlight(struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	enum pipe pipe = intel_get_pipe_from_connector(connector);
+	u32 tmp;
+
+	tmp = I915_READ(BLC_PWM_CTL2);
+
+	/* Note that this can also get called through dpms changes. And
+	 * we don't track the backlight dpms state, hence check whether
+	 * we have to do anything first. */
+	if (tmp & BLM_PWM_ENABLE)
+		return;
+
+	tmp &= ~BLM_PIPE_SELECT;
+	tmp |= BLM_PIPE(pipe);
+	tmp &= ~BLM_PWM_ENABLE;
+
+	I915_WRITE(BLC_PWM_CTL2, tmp);
+	POSTING_READ(BLC_PWM_CTL2);
+	I915_WRITE(BLC_PWM_CTL2, tmp | BLM_PWM_ENABLE);
+}
+
+static void vlv_enable_backlight(struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	enum pipe pipe = intel_get_pipe_from_connector(connector);
+	u32 tmp;
+
+	tmp = I915_READ(VLV_BLC_PWM_CTL2(pipe));
+
+	/* Note that this can also get called through dpms changes. And
+	 * we don't track the backlight dpms state, hence check whether
+	 * we have to do anything first. */
+	if (tmp & BLM_PWM_ENABLE)
+		return;
+
+	tmp &= ~BLM_PIPE_SELECT;
+	tmp |= BLM_PIPE(pipe);
+	tmp &= ~BLM_PWM_ENABLE;
+
+	I915_WRITE(VLV_BLC_PWM_CTL2(pipe), tmp);
+	POSTING_READ(VLV_BLC_PWM_CTL2(pipe));
+	I915_WRITE(VLV_BLC_PWM_CTL2(pipe), tmp | BLM_PWM_ENABLE);
+}
+
 void intel_panel_enable_backlight(struct intel_connector *connector)
 {
 	struct drm_device *dev = connector->base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_panel *panel = &connector->panel;
 	enum pipe pipe = intel_get_pipe_from_connector(connector);
-	enum transcoder cpu_transcoder =
-		intel_pipe_to_cpu_transcoder(dev_priv, pipe);
 	unsigned long flags;
 
 	if (pipe == INVALID_PIPE)
@@ -629,89 +809,25 @@
 	spin_lock_irqsave(&dev_priv->backlight_lock, flags);
 
 	if (panel->backlight.level == 0) {
-		panel->backlight.level = intel_panel_get_max_backlight(dev,
-								       pipe);
+		panel->backlight.level = intel_panel_get_max_backlight(connector);
 		if (panel->backlight.device)
 			panel->backlight.device->props.brightness =
 				panel->backlight.level;
 	}
 
-	if (INTEL_INFO(dev)->gen >= 4) {
-		uint32_t reg, tmp;
+	if (dev_priv->display.enable_backlight)
+		dev_priv->display.enable_backlight(connector);
 
-		if (HAS_PCH_SPLIT(dev))
-			reg = BLC_PWM_CPU_CTL2;
-		else if (IS_VALLEYVIEW(dev))
-			reg = VLV_BLC_PWM_CTL2(pipe);
-		else
-			reg = BLC_PWM_CTL2;
-
-		tmp = I915_READ(reg);
-
-		/* Note that this can also get called through dpms changes. And
-		 * we don't track the backlight dpms state, hence check whether
-		 * we have to do anything first. */
-		if (tmp & BLM_PWM_ENABLE)
-			goto set_level;
-
-		if (INTEL_INFO(dev)->num_pipes == 3)
-			tmp &= ~BLM_PIPE_SELECT_IVB;
-		else
-			tmp &= ~BLM_PIPE_SELECT;
-
-		if (cpu_transcoder == TRANSCODER_EDP)
-			tmp |= BLM_TRANSCODER_EDP;
-		else
-			tmp |= BLM_PIPE(cpu_transcoder);
-		tmp &= ~BLM_PWM_ENABLE;
-
-		I915_WRITE(reg, tmp);
-		POSTING_READ(reg);
-		I915_WRITE(reg, tmp | BLM_PWM_ENABLE);
-
-		if (HAS_PCH_SPLIT(dev) &&
-		    !(dev_priv->quirks & QUIRK_NO_PCH_PWM_ENABLE)) {
-			tmp = I915_READ(BLC_PWM_PCH_CTL1);
-			tmp |= BLM_PCH_PWM_ENABLE;
-			tmp &= ~BLM_PCH_OVERRIDE_ENABLE;
-			I915_WRITE(BLC_PWM_PCH_CTL1, tmp);
-		}
-	}
-
-set_level:
 	/* Call below after setting BLC_PWM_CPU_CTL2 and BLC_PWM_PCH_CTL1.
 	 * BLC_PWM_CPU_CTL may be cleared to zero automatically when these
 	 * registers are set.
 	 */
 	panel->backlight.enabled = true;
-	intel_panel_actually_set_backlight(dev, pipe,
-					   panel->backlight.level);
+	intel_panel_actually_set_backlight(connector, panel->backlight.level);
 
 	spin_unlock_irqrestore(&dev_priv->backlight_lock, flags);
 }
 
-/* FIXME: use VBT vals to init PWM_CTL and PWM_CTL2 correctly */
-static void intel_panel_init_backlight_regs(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-
-	if (IS_VALLEYVIEW(dev)) {
-		enum pipe pipe;
-
-		for_each_pipe(pipe) {
-			u32 cur_val = I915_READ(VLV_BLC_PWM_CTL(pipe));
-
-			/* Skip if the modulation freq is already set */
-			if (cur_val & ~BACKLIGHT_DUTY_CYCLE_MASK)
-				continue;
-
-			cur_val &= BACKLIGHT_DUTY_CYCLE_MASK;
-			I915_WRITE(VLV_BLC_PWM_CTL(pipe), (0xf42 << 16) |
-				   cur_val);
-		}
-	}
-}
-
 enum drm_connector_status
 intel_panel_detect(struct drm_device *dev)
 {
@@ -753,15 +869,13 @@
 {
 	struct intel_connector *connector = bl_get_data(bd);
 	struct drm_device *dev = connector->base.dev;
-	enum pipe pipe;
+	int ret;
 
 	mutex_lock(&dev->mode_config.mutex);
-	pipe = intel_get_pipe_from_connector(connector);
+	ret = intel_panel_get_backlight(connector);
 	mutex_unlock(&dev->mode_config.mutex);
-	if (pipe == INVALID_PIPE)
-		return 0;
 
-	return intel_panel_get_backlight(connector->base.dev, pipe);
+	return ret;
 }
 
 static const struct backlight_ops intel_backlight_device_ops = {
@@ -771,27 +885,18 @@
 
 static int intel_backlight_device_register(struct intel_connector *connector)
 {
-	struct drm_device *dev = connector->base.dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_panel *panel = &connector->panel;
 	struct backlight_properties props;
-	unsigned long flags;
 
 	if (WARN_ON(panel->backlight.device))
 		return -ENODEV;
 
+	BUG_ON(panel->backlight.max == 0);
+
 	memset(&props, 0, sizeof(props));
 	props.type = BACKLIGHT_RAW;
 	props.brightness = panel->backlight.level;
-
-	spin_lock_irqsave(&dev_priv->backlight_lock, flags);
-	props.max_brightness = intel_panel_get_max_backlight(dev, 0);
-	spin_unlock_irqrestore(&dev_priv->backlight_lock, flags);
-
-	if (props.max_brightness == 0) {
-		DRM_DEBUG_DRIVER("Failed to get maximum backlight value\n");
-		return -ENODEV;
-	}
+	props.max_brightness = panel->backlight.max;
 
 	/*
 	 * Note: using the same name independent of the connector prevents
@@ -831,15 +936,102 @@
 }
 #endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */
 
+/* Note: The setup hooks can't assume pipe is set! */
+static int pch_setup_backlight(struct intel_connector *connector)
+{
+	struct intel_panel *panel = &connector->panel;
+	u32 val;
+
+	panel->backlight.max = pch_get_max_backlight(connector);
+	if (!panel->backlight.max)
+		return -ENODEV;
+
+	val = pch_get_backlight(connector);
+	panel->backlight.level = intel_panel_compute_brightness(connector, val);
+
+	return 0;
+}
+
+static int i9xx_setup_backlight(struct intel_connector *connector)
+{
+	struct intel_panel *panel = &connector->panel;
+	u32 val;
+
+	panel->backlight.max = i9xx_get_max_backlight(connector);
+	if (!panel->backlight.max)
+		return -ENODEV;
+
+	val = i9xx_get_backlight(connector);
+	panel->backlight.level = intel_panel_compute_brightness(connector, val);
+
+	return 0;
+}
+
+static int i965_setup_backlight(struct intel_connector *connector)
+{
+	struct intel_panel *panel = &connector->panel;
+	u32 val;
+
+	panel->backlight.max = i965_get_max_backlight(connector);
+	if (!panel->backlight.max)
+		return -ENODEV;
+
+	val = i9xx_get_backlight(connector);
+	panel->backlight.level = intel_panel_compute_brightness(connector, val);
+
+	return 0;
+}
+
+static int vlv_setup_backlight(struct intel_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_panel *panel = &connector->panel;
+	enum pipe pipe;
+	u32 val;
+
+	for_each_pipe(pipe) {
+		u32 cur_val = I915_READ(VLV_BLC_PWM_CTL(pipe));
+
+		/* Skip if the modulation freq is already set */
+		if (cur_val & ~BACKLIGHT_DUTY_CYCLE_MASK)
+			continue;
+
+		cur_val &= BACKLIGHT_DUTY_CYCLE_MASK;
+		I915_WRITE(VLV_BLC_PWM_CTL(pipe), (0xf42 << 16) |
+			   cur_val);
+	}
+
+	panel->backlight.max = _vlv_get_max_backlight(dev, PIPE_A);
+	if (!panel->backlight.max)
+		return -ENODEV;
+
+	val = _vlv_get_backlight(dev, PIPE_A);
+	panel->backlight.level = intel_panel_compute_brightness(connector, val);
+
+	return 0;
+}
+
 int intel_panel_setup_backlight(struct drm_connector *connector)
 {
 	struct drm_device *dev = connector->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_connector *intel_connector = to_intel_connector(connector);
 	struct intel_panel *panel = &intel_connector->panel;
+	unsigned long flags;
+	int ret;
 
-	intel_panel_init_backlight_regs(dev);
+	/* set level and max in panel struct */
+	spin_lock_irqsave(&dev_priv->backlight_lock, flags);
+	ret = dev_priv->display.setup_backlight(intel_connector);
+	spin_unlock_irqrestore(&dev_priv->backlight_lock, flags);
 
-	panel->backlight.level = intel_panel_get_backlight(dev, 0);
+	if (ret) {
+		DRM_DEBUG_KMS("failed to setup backlight for connector %s\n",
+			      drm_get_connector_name(connector));
+		return ret;
+	}
+
 	panel->backlight.enabled = panel->backlight.level != 0;
 
 	intel_backlight_device_register(intel_connector);
@@ -858,6 +1050,40 @@
 	intel_backlight_device_unregister(intel_connector);
 }
 
+/* Set up chip specific backlight functions */
+void intel_panel_init_backlight_funcs(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+
+	if (HAS_PCH_SPLIT(dev)) {
+		dev_priv->display.setup_backlight = pch_setup_backlight;
+		dev_priv->display.enable_backlight = pch_enable_backlight;
+		dev_priv->display.disable_backlight = pch_disable_backlight;
+		dev_priv->display.set_backlight = pch_set_backlight;
+		dev_priv->display.get_backlight = pch_get_backlight;
+		dev_priv->display.get_max_backlight = pch_get_max_backlight;
+	} else if (IS_VALLEYVIEW(dev)) {
+		dev_priv->display.setup_backlight = vlv_setup_backlight;
+		dev_priv->display.enable_backlight = vlv_enable_backlight;
+		dev_priv->display.disable_backlight = vlv_disable_backlight;
+		dev_priv->display.set_backlight = vlv_set_backlight;
+		dev_priv->display.get_backlight = vlv_get_backlight;
+		dev_priv->display.get_max_backlight = vlv_get_max_backlight;
+	} else if (IS_GEN4(dev)) {
+		dev_priv->display.setup_backlight = i965_setup_backlight;
+		dev_priv->display.enable_backlight = i965_enable_backlight;
+		dev_priv->display.disable_backlight = i965_disable_backlight;
+		dev_priv->display.set_backlight = i9xx_set_backlight;
+		dev_priv->display.get_backlight = i9xx_get_backlight;
+		dev_priv->display.get_max_backlight = i965_get_max_backlight;
+	} else {
+		dev_priv->display.setup_backlight = i9xx_setup_backlight;
+		dev_priv->display.set_backlight = i9xx_set_backlight;
+		dev_priv->display.get_backlight = i9xx_get_backlight;
+		dev_priv->display.get_max_backlight = i9xx_get_max_backlight;
+	}
+}
+
 int intel_panel_init(struct intel_panel *panel,
 		     struct drm_display_mode *fixed_mode)
 {