+static void pch_irq_handler(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ u32 pch_iir;
+
+ pch_iir = I915_READ(SDEIIR);
+
+ if (pch_iir & SDE_AUDIO_POWER_MASK)
+ DRM_DEBUG_DRIVER("PCH audio power change on port %d\n",
+ (pch_iir & SDE_AUDIO_POWER_MASK) >>
+ SDE_AUDIO_POWER_SHIFT);
+
+ if (pch_iir & SDE_GMBUS)
+ DRM_DEBUG_DRIVER("PCH GMBUS interrupt\n");
+
+ if (pch_iir & SDE_AUDIO_HDCP_MASK)
+ DRM_DEBUG_DRIVER("PCH HDCP audio interrupt\n");
+
+ if (pch_iir & SDE_AUDIO_TRANS_MASK)
+ DRM_DEBUG_DRIVER("PCH transcoder audio interrupt\n");
+
+ if (pch_iir & SDE_POISON)
+ DRM_ERROR("PCH poison interrupt\n");
+
+ if (pch_iir & SDE_FDI_MASK) {
+ u32 fdia, fdib;
+
+ fdia = I915_READ(FDI_RXA_IIR);
+ fdib = I915_READ(FDI_RXB_IIR);
+ DRM_DEBUG_DRIVER("PCH FDI RX interrupt; FDI RXA IIR: 0x%08x, FDI RXB IIR: 0x%08x\n", fdia, fdib);
+ }
+
+ if (pch_iir & (SDE_TRANSB_CRC_DONE | SDE_TRANSA_CRC_DONE))
+ DRM_DEBUG_DRIVER("PCH transcoder CRC done interrupt\n");
+
+ if (pch_iir & (SDE_TRANSB_CRC_ERR | SDE_TRANSA_CRC_ERR))
+ DRM_DEBUG_DRIVER("PCH transcoder CRC error interrupt\n");
+
+ if (pch_iir & SDE_TRANSB_FIFO_UNDER)
+ DRM_DEBUG_DRIVER("PCH transcoder B underrun interrupt\n");
+ if (pch_iir & SDE_TRANSA_FIFO_UNDER)
+ DRM_DEBUG_DRIVER("PCH transcoder A underrun interrupt\n");
+}
+