[PATCH 5/5] drm/i915/irq: emphasize display_irqs_enabled is only about VLV/CHV

[Jani Nikula]

Rename display_irqs_enabled to vlv_display_irqs_enabled, to emphasize
it's really only about VLV/CHV. Only access it when running on VLV/CHV.

Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 .../gpu/drm/i915/display/intel_display_core.h |  9 ++++++-
 .../gpu/drm/i915/display/intel_display_irq.c  | 26 ++++++-------------
 .../gpu/drm/i915/display/intel_hotplug_irq.c  |  6 ++++-
 3 files changed, 21 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_core.h b/drivers/gpu/drm/i915/display/intel_display_core.h
index 45b7c6900adc..5ad66df1a85e 100644
--- a/drivers/gpu/drm/i915/display/intel_display_core.h
+++ b/drivers/gpu/drm/i915/display/intel_display_core.h
@@ -453,7 +453,14 @@ struct intel_display {
 	} ips;
 
 	struct {
-		bool display_irqs_enabled;
+		/*
+		 * Most platforms treat the display irq block as an always-on
+		 * power domain. vlv/chv can disable it at runtime and need
+		 * special care to avoid writing any of the display block
+		 * registers outside of the power domain. We defer setting up
+		 * the display irqs in this case to the runtime pm.
+		 */
+		bool vlv_display_irqs_enabled;
 
 		/* For i915gm/i945gm vblank irq workaround */
 		u8 vblank_enabled;
diff --git a/drivers/gpu/drm/i915/display/intel_display_irq.c b/drivers/gpu/drm/i915/display/intel_display_irq.c
index d5458b0d976b..50c1ca062b80 100644
--- a/drivers/gpu/drm/i915/display/intel_display_irq.c
+++ b/drivers/gpu/drm/i915/display/intel_display_irq.c
@@ -434,7 +434,8 @@ void i9xx_pipestat_irq_ack(struct drm_i915_private *dev_priv,
 
 	spin_lock(&dev_priv->irq_lock);
 
-	if (!dev_priv->display.irq.display_irqs_enabled) {
+	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
+	    !dev_priv->display.irq.vlv_display_irqs_enabled) {
 		spin_unlock(&dev_priv->irq_lock);
 		return;
 	}
@@ -1499,7 +1500,7 @@ static void _vlv_display_irq_reset(struct drm_i915_private *dev_priv)
 
 void vlv_display_irq_reset(struct drm_i915_private *dev_priv)
 {
-	if (dev_priv->display.irq.display_irqs_enabled)
+	if (dev_priv->display.irq.vlv_display_irqs_enabled)
 		_vlv_display_irq_reset(dev_priv);
 }
 
@@ -1522,7 +1523,7 @@ void vlv_display_irq_postinstall(struct drm_i915_private *dev_priv)
 	u32 enable_mask;
 	enum pipe pipe;
 
-	if (!dev_priv->display.irq.display_irqs_enabled)
+	if (!dev_priv->display.irq.vlv_display_irqs_enabled)
 		return;
 
 	pipestat_mask = PIPE_CRC_DONE_INTERRUPT_STATUS;
@@ -1697,10 +1698,10 @@ void valleyview_enable_display_irqs(struct drm_i915_private *dev_priv)
 {
 	lockdep_assert_held(&dev_priv->irq_lock);
 
-	if (dev_priv->display.irq.display_irqs_enabled)
+	if (dev_priv->display.irq.vlv_display_irqs_enabled)
 		return;
 
-	dev_priv->display.irq.display_irqs_enabled = true;
+	dev_priv->display.irq.vlv_display_irqs_enabled = true;
 
 	if (intel_irqs_enabled(dev_priv)) {
 		_vlv_display_irq_reset(dev_priv);
@@ -1712,10 +1713,10 @@ void valleyview_disable_display_irqs(struct drm_i915_private *dev_priv)
 {
 	lockdep_assert_held(&dev_priv->irq_lock);
 
-	if (!dev_priv->display.irq.display_irqs_enabled)
+	if (!dev_priv->display.irq.vlv_display_irqs_enabled)
 		return;
 
-	dev_priv->display.irq.display_irqs_enabled = false;
+	dev_priv->display.irq.vlv_display_irqs_enabled = false;
 
 	if (intel_irqs_enabled(dev_priv))
 		_vlv_display_irq_reset(dev_priv);
@@ -1911,17 +1912,6 @@ void intel_display_irq_init(struct drm_i915_private *i915)
 {
 	i915->drm.vblank_disable_immediate = true;
 
-	/*
-	 * Most platforms treat the display irq block as an always-on power
-	 * domain. vlv/chv can disable it at runtime and need special care to
-	 * avoid writing any of the display block registers outside of the power
-	 * domain. We defer setting up the display irqs in this case to the
-	 * runtime pm.
-	 */
-	i915->display.irq.display_irqs_enabled = true;
-	if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
-		i915->display.irq.display_irqs_enabled = false;
-
 	intel_hotplug_irq_init(i915);
 
 	INIT_WORK(&i915->display.irq.vblank_dc_work,
diff --git a/drivers/gpu/drm/i915/display/intel_hotplug_irq.c b/drivers/gpu/drm/i915/display/intel_hotplug_irq.c
index cb64c6f0ad1b..476ac88087e0 100644
--- a/drivers/gpu/drm/i915/display/intel_hotplug_irq.c
+++ b/drivers/gpu/drm/i915/display/intel_hotplug_irq.c
@@ -1457,7 +1457,11 @@ void intel_hpd_enable_detection(struct intel_encoder *encoder)
 
 void intel_hpd_irq_setup(struct drm_i915_private *i915)
 {
-	if (i915->display.irq.display_irqs_enabled && i915->display.funcs.hotplug)
+	if ((IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) &&
+	    !i915->display.irq.vlv_display_irqs_enabled)
+		return;
+
+	if (i915->display.funcs.hotplug)
 		i915->display.funcs.hotplug->hpd_irq_setup(i915);
 }
 
-- 
2.39.5