[PATCH 11/11] drm/i915: Add SCDC Read Request Interrupt handler

[Ankit Nautiyal]

This patch adds the interrupt handler for SCDC Read requests
from HDMI sinks. The handler is called from SCDC work function
for the HDMI port where interrupt is received.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
---
 drivers/gpu/drm/i915/i915_irq.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 2c0354f092a2..b2eda19f7236 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -242,9 +242,22 @@ static void scdc_rr_work_func(struct work_struct *work)
 {
 	struct drm_i915_private *dev_priv =
 		container_of(work, struct drm_i915_private, scdc_rr.scdc_rr_work);
+	struct intel_encoder *encoder;
+	enum scdc_pin pin;
+
 	/* #TODO Support for SCDC for GLK,CNL */
 	if (DISPLAY_VER(dev_priv) < 11)
 		return;
+
+	for_each_intel_encoder(&dev_priv->drm, encoder) {
+		if (encoder->type != INTEL_OUTPUT_HDMI)
+			continue;
+		pin = intel_hdmi_get_scdc_pin(encoder);
+		if (pin == SCDC_PORT_NONE)
+			continue;
+		if (dev_priv->scdc_rr.event_bits & pin)
+			intel_hdmi_handle_scdc_rr(dev_priv, encoder);
+	}
 }
 
 static void
-- 
2.25.1