]> bbs.cooldavid.org Git - net-next-2.6.git/blobdiff - drivers/gpu/drm/i915/i915_irq.c
drm/i915: Add display hotplug event on Ironlake
[net-next-2.6.git] / drivers / gpu / drm / i915 / i915_irq.c
index 4dfeec7cdd42c9a0e0c8b1832cc6c29ae4efa6e2..024fb954db37c9f98fb3df10aac62f217daa9e56 100644 (file)
@@ -156,6 +156,20 @@ i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask)
        }
 }
 
+/**
+ * intel_enable_asle - enable ASLE interrupt for OpRegion
+ */
+void intel_enable_asle (struct drm_device *dev)
+{
+       drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+
+       if (IS_IGDNG(dev))
+               igdng_enable_display_irq(dev_priv, DE_GSE);
+       else
+               i915_enable_pipestat(dev_priv, 1,
+                                    I915_LEGACY_BLC_EVENT_ENABLE);
+}
+
 /**
  * i915_pipe_enabled - check if a pipe is enabled
  * @dev: DRM device
@@ -191,7 +205,8 @@ u32 i915_get_vblank_counter(struct drm_device *dev, int pipe)
        low_frame = pipe ? PIPEBFRAMEPIXEL : PIPEAFRAMEPIXEL;
 
        if (!i915_pipe_enabled(dev, pipe)) {
-               DRM_DEBUG("trying to get vblank count for disabled pipe %d\n", pipe);
+               DRM_DEBUG_DRIVER("trying to get vblank count for disabled "
+                               "pipe %d\n", pipe);
                return 0;
        }
 
@@ -220,7 +235,8 @@ u32 gm45_get_vblank_counter(struct drm_device *dev, int pipe)
        int reg = pipe ? PIPEB_FRMCOUNT_GM45 : PIPEA_FRMCOUNT_GM45;
 
        if (!i915_pipe_enabled(dev, pipe)) {
-               DRM_DEBUG("trying to get vblank count for disabled pipe %d\n", pipe);
+               DRM_DEBUG_DRIVER("trying to get vblank count for disabled "
+                                       "pipe %d\n", pipe);
                return 0;
        }
 
@@ -254,19 +270,24 @@ irqreturn_t igdng_irq_handler(struct drm_device *dev)
 {
        drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
        int ret = IRQ_NONE;
-       u32 de_iir, gt_iir;
-       u32 new_de_iir, new_gt_iir;
+       u32 de_iir, gt_iir, pch_iir;
+       u32 new_de_iir, new_gt_iir, new_pch_iir;
        struct drm_i915_master_private *master_priv;
 
        de_iir = I915_READ(DEIIR);
        gt_iir = I915_READ(GTIIR);
+       pch_iir = I915_READ(SDEIIR);
 
        for (;;) {
-               if (de_iir == 0 && gt_iir == 0)
+               if (de_iir == 0 && gt_iir == 0 && pch_iir == 0)
                        break;
 
                ret = IRQ_HANDLED;
 
+               /* should clear PCH hotplug event before clear CPU irq */
+               I915_WRITE(SDEIIR, pch_iir);
+               new_pch_iir = I915_READ(SDEIIR);
+
                I915_WRITE(DEIIR, de_iir);
                new_de_iir = I915_READ(DEIIR);
                I915_WRITE(GTIIR, gt_iir);
@@ -286,8 +307,18 @@ irqreturn_t igdng_irq_handler(struct drm_device *dev)
                        DRM_WAKEUP(&dev_priv->irq_queue);
                }
 
+               if (de_iir & DE_GSE)
+                       ironlake_opregion_gse_intr(dev);
+
+               /* check event from PCH */
+               if ((de_iir & DE_PCH_EVENT) &&
+                       (pch_iir & SDE_HOTPLUG_MASK)) {
+                       queue_work(dev_priv->wq, &dev_priv->hotplug_work);
+               }
+
                de_iir = new_de_iir;
                gt_iir = new_gt_iir;
+               pch_iir = new_pch_iir;
        }
 
        return ret;
@@ -309,19 +340,19 @@ static void i915_error_work_func(struct work_struct *work)
        char *reset_event[] = { "RESET=1", NULL };
        char *reset_done_event[] = { "ERROR=0", NULL };
 
-       DRM_DEBUG("generating error event\n");
+       DRM_DEBUG_DRIVER("generating error event\n");
        kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, error_event);
 
        if (atomic_read(&dev_priv->mm.wedged)) {
                if (IS_I965G(dev)) {
-                       DRM_DEBUG("resetting chip\n");
+                       DRM_DEBUG_DRIVER("resetting chip\n");
                        kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, reset_event);
                        if (!i965_reset(dev, GDRST_RENDER)) {
                                atomic_set(&dev_priv->mm.wedged, 0);
                                kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, reset_done_event);
                        }
                } else {
-                       printk("reboot required\n");
+                       DRM_DEBUG_DRIVER("reboot required\n");
                }
        }
 }
@@ -347,7 +378,7 @@ static void i915_capture_error_state(struct drm_device *dev)
 
        error = kmalloc(sizeof(*error), GFP_ATOMIC);
        if (!error) {
-               DRM_DEBUG("out ot memory, not capturing error state\n");
+               DRM_DEBUG_DRIVER("out ot memory, not capturing error state\n");
                goto out;
        }
 
@@ -560,14 +591,14 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
                 */
                if (pipea_stats & 0x8000ffff) {
                        if (pipea_stats &  PIPE_FIFO_UNDERRUN_STATUS)
-                               DRM_DEBUG("pipe a underrun\n");
+                               DRM_DEBUG_DRIVER("pipe a underrun\n");
                        I915_WRITE(PIPEASTAT, pipea_stats);
                        irq_received = 1;
                }
 
                if (pipeb_stats & 0x8000ffff) {
                        if (pipeb_stats &  PIPE_FIFO_UNDERRUN_STATUS)
-                               DRM_DEBUG("pipe b underrun\n");
+                               DRM_DEBUG_DRIVER("pipe b underrun\n");
                        I915_WRITE(PIPEBSTAT, pipeb_stats);
                        irq_received = 1;
                }
@@ -583,7 +614,7 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
                    (iir & I915_DISPLAY_PORT_INTERRUPT)) {
                        u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT);
 
-                       DRM_DEBUG("hotplug event received, stat 0x%08x\n",
+                       DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n",
                                  hotplug_status);
                        if (hotplug_status & dev_priv->hotplug_supported_mask)
                                queue_work(dev_priv->wq,
@@ -597,7 +628,7 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
                                (hotplug_status & CRT_EOS_INT_STATUS)) {
                                u32 temp;
 
-                               DRM_DEBUG("EOS interrupt occurs\n");
+                               DRM_DEBUG_DRIVER("EOS interrupt occurs\n");
                                /* status is already cleared */
                                temp = I915_READ(ADPA);
                                temp &= ~ADPA_DAC_ENABLE;
@@ -676,7 +707,7 @@ static int i915_emit_irq(struct drm_device * dev)
 
        i915_kernel_lost_context(dev);
 
-       DRM_DEBUG("\n");
+       DRM_DEBUG_DRIVER("\n");
 
        dev_priv->counter++;
        if (dev_priv->counter > 0x7FFFFFFFUL)
@@ -725,13 +756,23 @@ void i915_user_irq_put(struct drm_device *dev)
        spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags);
 }
 
+void i915_trace_irq_get(struct drm_device *dev, u32 seqno)
+{
+       drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+
+       if (dev_priv->trace_irq_seqno == 0)
+               i915_user_irq_get(dev);
+
+       dev_priv->trace_irq_seqno = seqno;
+}
+
 static int i915_wait_irq(struct drm_device * dev, int irq_nr)
 {
        drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
        struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
        int ret = 0;
 
-       DRM_DEBUG("irq_nr=%d breadcrumb=%d\n", irq_nr,
+       DRM_DEBUG_DRIVER("irq_nr=%d breadcrumb=%d\n", irq_nr,
                  READ_BREADCRUMB(dev_priv));
 
        if (READ_BREADCRUMB(dev_priv) >= irq_nr) {
@@ -974,14 +1015,21 @@ static void igdng_irq_preinstall(struct drm_device *dev)
        I915_WRITE(GTIMR, 0xffffffff);
        I915_WRITE(GTIER, 0x0);
        (void) I915_READ(GTIER);
+
+       /* south display irq */
+       I915_WRITE(SDEIMR, 0xffffffff);
+       I915_WRITE(SDEIER, 0x0);
+       (void) I915_READ(SDEIER);
 }
 
 static int igdng_irq_postinstall(struct drm_device *dev)
 {
        drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
        /* enable kind of interrupts always enabled */
-       u32 display_mask = DE_MASTER_IRQ_CONTROL /*| DE_PCH_EVENT */;
+       u32 display_mask = DE_MASTER_IRQ_CONTROL | DE_GSE | DE_PCH_EVENT;
        u32 render_mask = GT_USER_INTERRUPT;
+       u32 hotplug_mask = SDE_CRT_HOTPLUG | SDE_PORTB_HOTPLUG |
+                          SDE_PORTC_HOTPLUG | SDE_PORTD_HOTPLUG;
 
        dev_priv->irq_mask_reg = ~display_mask;
        dev_priv->de_irq_enable_reg = display_mask;
@@ -1001,6 +1049,14 @@ static int igdng_irq_postinstall(struct drm_device *dev)
        I915_WRITE(GTIER, dev_priv->gt_irq_enable_reg);
        (void) I915_READ(GTIER);
 
+       dev_priv->pch_irq_mask_reg = ~hotplug_mask;
+       dev_priv->pch_irq_enable_reg = hotplug_mask;
+
+       I915_WRITE(SDEIIR, I915_READ(SDEIIR));
+       I915_WRITE(SDEIMR, dev_priv->pch_irq_mask_reg);
+       I915_WRITE(SDEIER, dev_priv->pch_irq_enable_reg);
+       (void) I915_READ(SDEIER);
+
        return 0;
 }