drm/i915: Rename i915_opregion.c to intel_opregion.c

It's part of the generic Intel driver infrastructure so rename it in
prepreparation for using it for VBT.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 5c8e534..345ca52d 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -32,7 +32,7 @@
 	  dvo_tfp410.o \
 	  dvo_sil164.o
 
-i915-$(CONFIG_ACPI)	+= i915_opregion.o
+i915-$(CONFIG_ACPI)	+= intel_opregion.o
 i915-$(CONFIG_COMPAT)   += i915_ioc32.o
 
 obj-$(CONFIG_DRM_I915)  += i915.o
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 04aada0..980061f 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1054,18 +1054,18 @@
 extern int i915_restore_state(struct drm_device *dev);
 
 #ifdef CONFIG_ACPI
-/* i915_opregion.c */
+/* intel_opregion.c */
 extern int intel_opregion_init(struct drm_device *dev, int resume);
 extern void intel_opregion_free(struct drm_device *dev, int suspend);
-extern void opregion_asle_intr(struct drm_device *dev);
-extern void ironlake_opregion_gse_intr(struct drm_device *dev);
-extern void opregion_enable_asle(struct drm_device *dev);
+extern void intel_opregion_asle_intr(struct drm_device *dev);
+extern void intel_opregion_gse_intr(struct drm_device *dev);
+extern void intel_opregion_enable_asle(struct drm_device *dev);
 #else
 static inline int intel_opregion_init(struct drm_device *dev, int resume) { return 0; }
 static inline void intel_opregion_free(struct drm_device *dev, int suspend) { return; }
-static inline void opregion_asle_intr(struct drm_device *dev) { return; }
-static inline void ironlake_opregion_gse_intr(struct drm_device *dev) { return; }
-static inline void opregion_enable_asle(struct drm_device *dev) { return; }
+static inline void intel_opregion_asle_intr(struct drm_device *dev) { return; }
+static inline void intel_opregion_gse_intr(struct drm_device *dev) { return; }
+static inline void intel_opregion_enable_asle(struct drm_device *dev) { return; }
 #endif
 
 /* modesetting */
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 59457e8..3afd6e5 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -347,7 +347,7 @@
 
 
 	if (de_iir & DE_GSE)
-		ironlake_opregion_gse_intr(dev);
+		intel_opregion_gse_intr(dev);
 
 	if (de_iir & DE_PLANEA_FLIP_DONE) {
 		intel_prepare_page_flip(dev, 0);
@@ -1065,7 +1065,7 @@
 		if ((pipea_stats & PIPE_LEGACY_BLC_EVENT_STATUS) ||
 		    (pipeb_stats & PIPE_LEGACY_BLC_EVENT_STATUS) ||
 		    (iir & I915_ASLE_INTERRUPT))
-			opregion_asle_intr(dev);
+			intel_opregion_asle_intr(dev);
 
 		/* With MSI, interrupts are only generated when iir
 		 * transitions from zero to nonzero.  If another bit got
@@ -1252,7 +1252,7 @@
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
 	if (!HAS_PCH_SPLIT(dev))
-		opregion_enable_asle(dev);
+		intel_opregion_enable_asle(dev);
 	dev_priv->irq_enabled = 1;
 }
 
@@ -1570,7 +1570,7 @@
 		I915_WRITE(PORT_HOTPLUG_EN, hotplug_en);
 	}
 
-	opregion_enable_asle(dev);
+	intel_opregion_enable_asle(dev);
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/i915/i915_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
similarity index 98%
rename from drivers/gpu/drm/i915/i915_opregion.c
rename to drivers/gpu/drm/i915/intel_opregion.c
index ea5d3fe..97d5329 100644
--- a/drivers/gpu/drm/i915/i915_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -211,7 +211,7 @@
 	return 0;
 }
 
-void opregion_asle_intr(struct drm_device *dev)
+void intel_opregion_asle_intr(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct opregion_asle *asle = dev_priv->opregion.asle;
@@ -273,7 +273,8 @@
 	return 0;
 }
 
-void ironlake_opregion_gse_intr(struct drm_device *dev)
+/* Only present on Ironlake+ */
+void intel_opregion_gse_intr(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct opregion_asle *asle = dev_priv->opregion.asle;
@@ -315,7 +316,7 @@
 #define ASLE_PFIT_EN   (1<<2)
 #define ASLE_PFMB_EN   (1<<3)
 
-void opregion_enable_asle(struct drm_device *dev)
+void intel_opregion_enable_asle(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct opregion_asle *asle = dev_priv->opregion.asle;
@@ -510,7 +511,7 @@
 	if (mboxes & MBOX_ASLE) {
 		DRM_DEBUG_DRIVER("ASLE supported\n");
 		opregion->asle = base + OPREGION_ASLE_OFFSET;
-		opregion_enable_asle(dev);
+		intel_opregion_enable_asle(dev);
 	}
 
 	if (!resume)