drm/i915/gen4: Fix interrupt setup ordering

Commit Message

Adam Jackson May 27, 2010, 9:26 p.m. UTC

None

Patch

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index a7e4b1f..f9d2cc0 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1402,29 +1402,10 @@  int i915_driver_irq_postinstall(struct drm_device *dev)
 	dev_priv->pipestat[1] = 0;
 
 	if (I915_HAS_HOTPLUG(dev)) {
-		u32 hotplug_en = I915_READ(PORT_HOTPLUG_EN);
-
-		/* Note HDMI and DP share bits */
-		if (dev_priv->hotplug_supported_mask & HDMIB_HOTPLUG_INT_STATUS)
-			hotplug_en |= HDMIB_HOTPLUG_INT_EN;
-		if (dev_priv->hotplug_supported_mask & HDMIC_HOTPLUG_INT_STATUS)
-			hotplug_en |= HDMIC_HOTPLUG_INT_EN;
-		if (dev_priv->hotplug_supported_mask & HDMID_HOTPLUG_INT_STATUS)
-			hotplug_en |= HDMID_HOTPLUG_INT_EN;
-		if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS)
-			hotplug_en |= SDVOC_HOTPLUG_INT_EN;
-		if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS)
-			hotplug_en |= SDVOB_HOTPLUG_INT_EN;
-		if (dev_priv->hotplug_supported_mask & CRT_HOTPLUG_INT_STATUS)
-			hotplug_en |= CRT_HOTPLUG_INT_EN;
-		/* Ignore TV since it's buggy */
-
-		I915_WRITE(PORT_HOTPLUG_EN, hotplug_en);
-
 		/* Enable in IER... */
 		enable_mask |= I915_DISPLAY_PORT_INTERRUPT;
 		/* and unmask in IMR */
-		i915_enable_irq(dev_priv, I915_DISPLAY_PORT_INTERRUPT);
+		dev_priv->irq_mask_reg &= ~I915_DISPLAY_PORT_INTERRUPT;
 	}
 
 	/*
@@ -1442,16 +1423,31 @@  int i915_driver_irq_postinstall(struct drm_device *dev)
 	}
 	I915_WRITE(EMR, error_mask);
 
-	/* Disable pipe interrupt enables, clear pending pipe status */
-	I915_WRITE(PIPEASTAT, I915_READ(PIPEASTAT) & 0x8000ffff);
-	I915_WRITE(PIPEBSTAT, I915_READ(PIPEBSTAT) & 0x8000ffff);
-	/* Clear pending interrupt status */
-	I915_WRITE(IIR, I915_READ(IIR));
-
-	I915_WRITE(IER, enable_mask);
 	I915_WRITE(IMR, dev_priv->irq_mask_reg);
+	I915_WRITE(IER, enable_mask);
 	(void) I915_READ(IER);
 
+	if (I915_HAS_HOTPLUG(dev)) {
+		u32 hotplug_en = I915_READ(PORT_HOTPLUG_EN);
+
+		/* Note HDMI and DP share bits */
+		if (dev_priv->hotplug_supported_mask & HDMIB_HOTPLUG_INT_STATUS)
+			hotplug_en |= HDMIB_HOTPLUG_INT_EN;
+		if (dev_priv->hotplug_supported_mask & HDMIC_HOTPLUG_INT_STATUS)
+			hotplug_en |= HDMIC_HOTPLUG_INT_EN;
+		if (dev_priv->hotplug_supported_mask & HDMID_HOTPLUG_INT_STATUS)
+			hotplug_en |= HDMID_HOTPLUG_INT_EN;
+		if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS)
+			hotplug_en |= SDVOC_HOTPLUG_INT_EN;
+		if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS)
+			hotplug_en |= SDVOB_HOTPLUG_INT_EN;
+		if (dev_priv->hotplug_supported_mask & CRT_HOTPLUG_INT_STATUS)
+			hotplug_en |= CRT_HOTPLUG_INT_EN;
+		/* Ignore TV since it's buggy */
+
+		I915_WRITE(PORT_HOTPLUG_EN, hotplug_en);
+	}
+
 	opregion_enable_asle(dev);
 
 	return 0;