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authorJesse Barnes <jbarnes@virtuousgeek.org>2011-01-04 15:09:39 -0800
committerChris Wilson <chris@chris-wilson.co.uk>2011-01-11 20:44:01 +0000
commit776ad8062bb77697b8728a9794e3a394b28cf885 (patch)
tree049e99bbdb92533dce7c528bc435ed864e4f1132 /drivers/gpu
parentd5bb081b027b520f9e59b4fb8faea83a136ec15e (diff)
drm/i915: detect & report PCH display error interrupts
FDI and the transcoders can fail for various reasons, so detect those conditions and report on them. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/i915/i915_irq.c54
-rw-r--r--drivers/gpu/drm/i915/i915_reg.h29
2 files changed, 81 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index c9adcdd6ad6a..d431fc4fb84b 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -398,6 +398,50 @@ static void gen6_pm_irq_handler(struct drm_device *dev)
I915_WRITE(GEN6_PMIIR, pm_iir);
}
+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");
+}
+
static irqreturn_t ironlake_irq_handler(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
@@ -465,8 +509,11 @@ static irqreturn_t ironlake_irq_handler(struct drm_device *dev)
drm_handle_vblank(dev, 1);
/* check event from PCH */
- if ((de_iir & DE_PCH_EVENT) && (pch_iir & hotplug_mask))
- queue_work(dev_priv->wq, &dev_priv->hotplug_work);
+ if (de_iir & DE_PCH_EVENT) {
+ if (pch_iir & hotplug_mask)
+ queue_work(dev_priv->wq, &dev_priv->hotplug_work);
+ pch_irq_handler(dev);
+ }
if (de_iir & DE_PCU_EVENT) {
I915_WRITE16(MEMINTRSTS, I915_READ(MEMINTRSTS));
@@ -1656,6 +1703,9 @@ static int ironlake_irq_postinstall(struct drm_device *dev)
} else {
hotplug_mask = SDE_CRT_HOTPLUG | SDE_PORTB_HOTPLUG |
SDE_PORTC_HOTPLUG | SDE_PORTD_HOTPLUG;
+ hotplug_mask |= SDE_AUX_MASK | SDE_FDI_MASK | SDE_TRANS_MASK;
+ I915_WRITE(FDI_RXA_IMR, 0);
+ I915_WRITE(FDI_RXB_IMR, 0);
}
dev_priv->pch_irq_mask = ~hotplug_mask;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 33ddf3120f2f..40a407f41f61 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2778,12 +2778,41 @@
/* PCH */
/* south display engine interrupt */
+#define SDE_AUDIO_POWER_D (1 << 27)
+#define SDE_AUDIO_POWER_C (1 << 26)
+#define SDE_AUDIO_POWER_B (1 << 25)
+#define SDE_AUDIO_POWER_SHIFT (25)
+#define SDE_AUDIO_POWER_MASK (7 << SDE_AUDIO_POWER_SHIFT)
+#define SDE_GMBUS (1 << 24)
+#define SDE_AUDIO_HDCP_TRANSB (1 << 23)
+#define SDE_AUDIO_HDCP_TRANSA (1 << 22)
+#define SDE_AUDIO_HDCP_MASK (3 << 22)
+#define SDE_AUDIO_TRANSB (1 << 21)
+#define SDE_AUDIO_TRANSA (1 << 20)
+#define SDE_AUDIO_TRANS_MASK (3 << 20)
+#define SDE_POISON (1 << 19)
+/* 18 reserved */
+#define SDE_FDI_RXB (1 << 17)
+#define SDE_FDI_RXA (1 << 16)
+#define SDE_FDI_MASK (3 << 16)
+#define SDE_AUXD (1 << 15)
+#define SDE_AUXC (1 << 14)
+#define SDE_AUXB (1 << 13)
+#define SDE_AUX_MASK (7 << 13)
+/* 12 reserved */
#define SDE_CRT_HOTPLUG (1 << 11)
#define SDE_PORTD_HOTPLUG (1 << 10)
#define SDE_PORTC_HOTPLUG (1 << 9)
#define SDE_PORTB_HOTPLUG (1 << 8)
#define SDE_SDVOB_HOTPLUG (1 << 6)
#define SDE_HOTPLUG_MASK (0xf << 8)
+#define SDE_TRANSB_CRC_DONE (1 << 5)
+#define SDE_TRANSB_CRC_ERR (1 << 4)
+#define SDE_TRANSB_FIFO_UNDER (1 << 3)
+#define SDE_TRANSA_CRC_DONE (1 << 2)
+#define SDE_TRANSA_CRC_ERR (1 << 1)
+#define SDE_TRANSA_FIFO_UNDER (1 << 0)
+#define SDE_TRANS_MASK (0x3f)
/* CPT */
#define SDE_CRT_HOTPLUG_CPT (1 << 19)
#define SDE_PORTD_HOTPLUG_CPT (1 << 23)