[PATCH 4/6] drm/i915/opregion: abstract ASLE presence check

[Jani Nikula]

Add a function to check the opregion ASLE presence instead of accessing
the opregion structures directly.

Reorder the checks in i915_has_asle() to avoid the function call if
possible.

Cc: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_irq.c | 6 +++---
 drivers/gpu/drm/i915/display/intel_opregion.c    | 5 +++++
 drivers/gpu/drm/i915/display/intel_opregion.h    | 6 ++++++
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_irq.c b/drivers/gpu/drm/i915/display/intel_display_irq.c
index 99843883cef7..f846c5b108b5 100644
--- a/drivers/gpu/drm/i915/display/intel_display_irq.c
+++ b/drivers/gpu/drm/i915/display/intel_display_irq.c
@@ -266,12 +266,12 @@ void i915_disable_pipestat(struct drm_i915_private *dev_priv,
 	intel_uncore_posting_read(&dev_priv->uncore, reg);
 }
 
-static bool i915_has_asle(struct drm_i915_private *dev_priv)
+static bool i915_has_asle(struct drm_i915_private *i915)
 {
-	if (!dev_priv->display.opregion.asle)
+	if (!IS_PINEVIEW(i915) && !IS_MOBILE(i915))
 		return false;
 
-	return IS_PINEVIEW(dev_priv) || IS_MOBILE(dev_priv);
+	return intel_opregion_asle_present(i915);
 }
 
 /**
diff --git a/drivers/gpu/drm/i915/display/intel_opregion.c b/drivers/gpu/drm/i915/display/intel_opregion.c
index 8b9e820971cb..26aacb01f9ec 100644
--- a/drivers/gpu/drm/i915/display/intel_opregion.c
+++ b/drivers/gpu/drm/i915/display/intel_opregion.c
@@ -632,6 +632,11 @@ static void asle_work(struct work_struct *work)
 	asle->aslc = aslc_stat;
 }
 
+bool intel_opregion_asle_present(struct drm_i915_private *i915)
+{
+	return i915->display.opregion.asle;
+}
+
 void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
 {
 	if (dev_priv->display.opregion.asle)
diff --git a/drivers/gpu/drm/i915/display/intel_opregion.h b/drivers/gpu/drm/i915/display/intel_opregion.h
index 9efadfb72584..d084b30e8703 100644
--- a/drivers/gpu/drm/i915/display/intel_opregion.h
+++ b/drivers/gpu/drm/i915/display/intel_opregion.h
@@ -69,6 +69,7 @@ void intel_opregion_resume(struct drm_i915_private *dev_priv);
 void intel_opregion_suspend(struct drm_i915_private *dev_priv,
 			    pci_power_t state);
 
+bool intel_opregion_asle_present(struct drm_i915_private *i915);
 void intel_opregion_asle_intr(struct drm_i915_private *dev_priv);
 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
 				  bool enable);
@@ -111,6 +112,11 @@ static inline void intel_opregion_suspend(struct drm_i915_private *dev_priv,
 {
 }
 
+static inline bool intel_opregion_asle_present(struct drm_i915_private *i915)
+{
+	return false;
+}
+
 static inline void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
 {
 }
-- 
2.39.2