[PATCH 09/14] drm/i915: Warn when display irq functions is executed when display is disabled

[José Roberto de Souza]

With previous changes none of those warnings will be printed but lets
add then so CI can caught regressions.

Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
---
 drivers/gpu/drm/i915/i915_irq.c      | 18 ++++++++++++++++++
 drivers/gpu/drm/i915/intel_hotplug.c |  2 ++
 2 files changed, 20 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index d447d7d508f4..7eec1ceae038 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -2029,6 +2029,8 @@ static u32 i9xx_hpd_irq_ack(struct drm_i915_private *dev_priv)
 	u32 hotplug_status = 0, hotplug_status_mask;
 	int i;
 
+	WARN_ON_ONCE(!HAS_DISPLAY(dev_priv));
+
 	if (IS_G4X(dev_priv) ||
 	    IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
 		hotplug_status_mask = HOTPLUG_INT_STATUS_G4X |
@@ -2067,6 +2069,8 @@ static void i9xx_hpd_irq_handler(struct drm_i915_private *dev_priv,
 {
 	u32 pin_mask = 0, long_mask = 0;
 
+	WARN_ON_ONCE(!HAS_DISPLAY(dev_priv));
+
 	if (IS_G4X(dev_priv) || IS_VALLEYVIEW(dev_priv) ||
 	    IS_CHERRYVIEW(dev_priv)) {
 		u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_G4X;
@@ -2511,6 +2515,8 @@ static void ilk_display_irq_handler(struct drm_i915_private *dev_priv,
 	enum pipe pipe;
 	u32 hotplug_trigger = de_iir & DE_DP_A_HOTPLUG;
 
+	WARN_ON_ONCE(!HAS_DISPLAY(dev_priv));
+
 	if (hotplug_trigger)
 		ilk_hpd_irq_handler(dev_priv, hotplug_trigger, hpd_ilk);
 
@@ -2557,6 +2563,8 @@ static void ivb_display_irq_handler(struct drm_i915_private *dev_priv,
 	enum pipe pipe;
 	u32 hotplug_trigger = de_iir & DE_DP_A_HOTPLUG_IVB;
 
+	WARN_ON_ONCE(!HAS_DISPLAY(dev_priv));
+
 	if (hotplug_trigger)
 		ilk_hpd_irq_handler(dev_priv, hotplug_trigger, hpd_ivb);
 
@@ -2725,6 +2733,8 @@ gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl)
 	u32 iir;
 	enum pipe pipe;
 
+	WARN_ON_ONCE(!HAS_DISPLAY(dev_priv));
+
 	if (master_ctl & GEN8_DE_MISC_IRQ) {
 		iir = I915_READ(GEN8_DE_MISC_IIR);
 		if (iir) {
@@ -3907,6 +3917,8 @@ static void spt_hpd_irq_setup(struct drm_i915_private *dev_priv)
 {
 	u32 hotplug_irqs, enabled_irqs;
 
+	WARN_ON_ONCE(!HAS_DISPLAY(dev_priv));
+
 	hotplug_irqs = SDE_HOTPLUG_MASK_SPT;
 	enabled_irqs = intel_hpd_enabled_irqs(dev_priv, hpd_spt);
 
@@ -3935,6 +3947,8 @@ static void ilk_hpd_irq_setup(struct drm_i915_private *dev_priv)
 {
 	u32 hotplug_irqs, enabled_irqs;
 
+	WARN_ON_ONCE(!HAS_DISPLAY(dev_priv));
+
 	if (INTEL_GEN(dev_priv) >= 8) {
 		hotplug_irqs = GEN8_PORT_DP_A_HOTPLUG;
 		enabled_irqs = intel_hpd_enabled_irqs(dev_priv, hpd_bdw);
@@ -3997,6 +4011,8 @@ static void bxt_hpd_irq_setup(struct drm_i915_private *dev_priv)
 {
 	u32 hotplug_irqs, enabled_irqs;
 
+	WARN_ON_ONCE(!HAS_DISPLAY(dev_priv));
+
 	enabled_irqs = intel_hpd_enabled_irqs(dev_priv, hpd_bxt);
 	hotplug_irqs = BXT_DE_PORT_HOTPLUG_MASK;
 
@@ -4712,6 +4728,8 @@ static void i915_hpd_irq_setup(struct drm_i915_private *dev_priv)
 {
 	u32 hotplug_en;
 
+	WARN_ON_ONCE(!HAS_DISPLAY(dev_priv));
+
 	lockdep_assert_held(&dev_priv->irq_lock);
 
 	/* Note HDMI and DP share hotplug bits */
diff --git a/drivers/gpu/drm/i915/intel_hotplug.c b/drivers/gpu/drm/i915/intel_hotplug.c
index 95d879cb85d0..201aad4b0a18 100644
--- a/drivers/gpu/drm/i915/intel_hotplug.c
+++ b/drivers/gpu/drm/i915/intel_hotplug.c
@@ -421,6 +421,8 @@ void intel_hpd_irq_handler(struct drm_i915_private *dev_priv,
 	if (!pin_mask)
 		return;
 
+	WARN_ON_ONCE(!HAS_DISPLAY(dev_priv));
+
 	spin_lock(&dev_priv->irq_lock);
 
 	/*
-- 
2.19.1