drm/i915: cleanup opregion asle pipestat enable

Both intel_opregion_enable_asle() and intel_enable_asle() have shrunk
considerably. Merge them together into a static function in i915_irq.c,
and rename to better reflect the purpose and the related platforms.

No functional changes.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_drv.h

@@ -1484,8 +1484,6 @@ i915_enable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask);
 void
 i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask);
 
-void intel_enable_asle(struct drm_device *dev);
-
 #ifdef CONFIG_DEBUG_FS
 extern void i915_destroy_error_state(struct drm_device *dev);
 #else
@@ -1819,12 +1817,10 @@ extern int intel_opregion_setup(struct drm_device *dev);
 extern void intel_opregion_init(struct drm_device *dev);
 extern void intel_opregion_fini(struct drm_device *dev);
 extern void intel_opregion_asle_intr(struct drm_device *dev);
-extern void intel_opregion_enable_asle(struct drm_device *dev);
 #else
 static inline void intel_opregion_init(struct drm_device *dev) { return; }
 static inline void intel_opregion_fini(struct drm_device *dev) { return; }
 static inline void intel_opregion_asle_intr(struct drm_device *dev) { return; }
-static inline void intel_opregion_enable_asle(struct drm_device *dev) { return; }
 #endif
 
 /* intel_acpi.c */

drivers/gpu/drm/i915/i915_irq.c

@@ -349,13 +349,16 @@ i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask)
 }
 
 /**
- * intel_enable_asle - enable ASLE interrupt for OpRegion
+ * i915_enable_asle_pipestat - enable ASLE pipestat for OpRegion
  */
-void intel_enable_asle(struct drm_device *dev)
+static void i915_enable_asle_pipestat(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = dev->dev_private;
 	unsigned long irqflags;
 
+	if (!dev_priv->opregion.asle || !IS_MOBILE(dev))
+		return;
+
 	spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
 
 	i915_enable_pipestat(dev_priv, 1, PIPE_LEGACY_BLC_EVENT_ENABLE);
@@ -2964,7 +2967,7 @@ static int i915_irq_postinstall(struct drm_device *dev)
 	I915_WRITE(IER, enable_mask);
 	POSTING_READ(IER);
 
-	intel_opregion_enable_asle(dev);
+	i915_enable_asle_pipestat(dev);
 
 	return 0;
 }
@@ -3198,7 +3201,7 @@ static int i965_irq_postinstall(struct drm_device *dev)
 	I915_WRITE(PORT_HOTPLUG_EN, 0);
 	POSTING_READ(PORT_HOTPLUG_EN);
 
-	intel_opregion_enable_asle(dev);
+	i915_enable_asle_pipestat(dev);
 
 	return 0;
 }

drivers/gpu/drm/i915/intel_opregion.c

@@ -232,17 +232,6 @@ void intel_opregion_asle_intr(struct drm_device *dev)
 	iowrite32(asle_stat, &asle->aslc);
 }
 
-void intel_opregion_enable_asle(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
-
-	if (asle) {
-		if (IS_MOBILE(dev))
-			intel_enable_asle(dev);
-	}
-}
-
 #define ACPI_EV_DISPLAY_SWITCH (1<<0)
 #define ACPI_EV_LID            (1<<1)
 #define ACPI_EV_DOCK           (1<<2)