[Intel-gfx] [PATCH 1/3] drm/i915: Warn when display irq functions are called without display

[José Roberto de Souza]

With previous changes none of those warnings will be printed but let's
add them so CI can caught regressions.

Cc: Lucas De Marchi <lucas.demarchi at intel.com>
Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 .../gpu/drm/i915/display/intel_fifo_underrun.c  |  2 ++
 drivers/gpu/drm/i915/display/intel_hotplug.c    |  2 ++
 drivers/gpu/drm/i915/i915_irq.c                 | 17 +++++++++++++++++
 3 files changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_fifo_underrun.c b/drivers/gpu/drm/i915/display/intel_fifo_underrun.c
index 813a4f7033e1..f3631e319e5d 100644
--- a/drivers/gpu/drm/i915/display/intel_fifo_underrun.c
+++ b/drivers/gpu/drm/i915/display/intel_fifo_underrun.c
@@ -373,6 +373,8 @@ void intel_cpu_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
 {
 	struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
 
+	drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_DISPLAY(dev_priv));
+
 	/* We may be called too early in init, thanks BIOS! */
 	if (crtc == NULL)
 		return;
diff --git a/drivers/gpu/drm/i915/display/intel_hotplug.c b/drivers/gpu/drm/i915/display/intel_hotplug.c
index f46a1b7190b8..77ce4a54a137 100644
--- a/drivers/gpu/drm/i915/display/intel_hotplug.c
+++ b/drivers/gpu/drm/i915/display/intel_hotplug.c
@@ -478,6 +478,8 @@ void intel_hpd_irq_handler(struct drm_i915_private *dev_priv,
 	if (!pin_mask)
 		return;
 
+	drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_DISPLAY(dev_priv));
+
 	spin_lock(&dev_priv->irq_lock);
 
 	/*
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 44aed4cbf894..cbb2aae4fc13 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -519,6 +519,8 @@ void i915_enable_pipestat(struct drm_i915_private *dev_priv,
 	i915_reg_t reg = PIPESTAT(pipe);
 	u32 enable_mask;
 
+	drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_DISPLAY(dev_priv));
+
 	drm_WARN_ONCE(&dev_priv->drm, status_mask & ~PIPESTAT_INT_STATUS_MASK,
 		      "pipe %c: status_mask=0x%x\n",
 		      pipe_name(pipe), status_mask);
@@ -1273,6 +1275,7 @@ static u32 intel_hpd_hotplug_enables(struct drm_i915_private *i915,
 
 static void gmbus_irq_handler(struct drm_i915_private *dev_priv)
 {
+	drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_DISPLAY(dev_priv));
 	wake_up_all(&dev_priv->gmbus_wait_queue);
 }
 
@@ -1366,6 +1369,8 @@ static void i9xx_pipe_crc_irq_handler(struct drm_i915_private *dev_priv,
 {
 	u32 res1, res2;
 
+	drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_DISPLAY(dev_priv));
+
 	if (INTEL_GEN(dev_priv) >= 3)
 		res1 = intel_uncore_read(&dev_priv->uncore, PIPE_CRC_RES_RES1_I915(pipe));
 	else
@@ -1558,6 +1563,8 @@ static u32 i9xx_hpd_irq_ack(struct drm_i915_private *dev_priv)
 	u32 hotplug_status = 0, hotplug_status_mask;
 	int i;
 
+	drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_DISPLAY(dev_priv));
+
 	if (IS_G4X(dev_priv) ||
 	    IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
 		hotplug_status_mask = HOTPLUG_INT_STATUS_G4X |
@@ -1597,6 +1604,8 @@ static void i9xx_hpd_irq_handler(struct drm_i915_private *dev_priv,
 	u32 pin_mask = 0, long_mask = 0;
 	u32 hotplug_trigger;
 
+	drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_DISPLAY(dev_priv));
+
 	if (IS_G4X(dev_priv) ||
 	    IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
 		hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_G4X;
@@ -2038,6 +2047,8 @@ static void ilk_display_irq_handler(struct drm_i915_private *dev_priv,
 	enum pipe pipe;
 	u32 hotplug_trigger = de_iir & DE_DP_A_HOTPLUG;
 
+	drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_DISPLAY(dev_priv));
+
 	if (hotplug_trigger)
 		ilk_hpd_irq_handler(dev_priv, hotplug_trigger);
 
@@ -2087,6 +2098,8 @@ 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;
 
+	drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_DISPLAY(dev_priv));
+
 	if (hotplug_trigger)
 		ilk_hpd_irq_handler(dev_priv, hotplug_trigger);
 
@@ -2421,6 +2434,8 @@ gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl)
 	u32 iir;
 	enum pipe pipe;
 
+	drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_DISPLAY(dev_priv));
+
 	if (master_ctl & GEN8_DE_MISC_IRQ) {
 		iir = intel_uncore_read(&dev_priv->uncore, GEN8_DE_MISC_IIR);
 		if (iir) {
@@ -3477,6 +3492,8 @@ static void spt_hpd_irq_setup(struct drm_i915_private *dev_priv)
 {
 	u32 hotplug_irqs, enabled_irqs;
 
+	drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_DISPLAY(dev_priv));
+
 	if (INTEL_PCH_TYPE(dev_priv) >= PCH_CNP)
 		intel_uncore_write(&dev_priv->uncore, SHPD_FILTER_CNT, SHPD_FILTER_CNT_500_ADJ);
 
-- 
2.31.0