i915 fixes from linux 3.8.3

6 files changed, 51 insertions, 12 deletions

diff --git a/sys/dev/pci/drm/i915/i915_dma.c b/sys/dev/pci/drm/i915/i915_dma.c
index 415508b5a62..1e0dbdb3a99 100644
--- a/sys/dev/pci/drm/i915/i915_dma.c
+++ b/sys/dev/pci/drm/i915/i915_dma.c
@@ -289,23 +289,42 @@ i915_load_modeset_init(struct drm_device *dev)
 	if (IS_GEN3(dev) && (I915_READ(ECOSKPD) & ECO_FLIP_DONE))
 		dev_priv->flip_pending_is_done = true;
 
+#ifdef notyet
+	ret = vga_switcheroo_register_client(dev->pdev, &i915_switcheroo_ops);
+	if (ret)
+		goto cleanup_vga_client;
+
+	/* Initialise stolen first so that we may reserve preallocated
+	 * objects for the BIOS to KMS transition.
+	 */
+	ret = i915_gem_init_stolen(dev);
+	if (ret)
+		goto cleanup_vga_switcheroo;
+#endif
+	ret = drm_irq_install(dev);
+	if (ret)
+		goto cleanup_gem_stolen;
+
+	/* Important: The output setup functions called by modeset_init need
+	 * working irqs for e.g. gmbus and dp aux transfers. */
 	intel_modeset_init(dev);
 
 	ret = i915_gem_init(dev);
-	if (ret != 0)
-		goto cleanup_gem;
+	if (ret)
+		goto cleanup_irq;
 
 	intel_modeset_gem_init(dev);
 
-	ret = drm_irq_install(dev);
-	if (ret)
-		goto cleanup_gem;
-
+	/* Always safe in the mode setting case. */
+	/* FIXME: do pre/post-mode set stuff in core KMS code */
 	dev->vblank_disable_allowed = 1;
 
 	ret = intel_fbdev_init(dev);
 	if (ret)
-		goto cleanup_irq;
+		goto cleanup_gem;
+
+	/* Only enable hotplug handling once the fbdev is fully set up. */
+	dev_priv->enable_hotplug_processing = true;
 
 	drm_kms_helper_poll_init(dev);
 
@@ -314,13 +333,17 @@ i915_load_modeset_init(struct drm_device *dev)
 
 	return (0);
 
-cleanup_irq:
-	drm_irq_uninstall(dev);
 cleanup_gem:
 	DRM_LOCK();
 	i915_gem_cleanup_ringbuffer(dev);
 	DRM_UNLOCK();
 	i915_gem_cleanup_aliasing_ppgtt(dev);
+cleanup_irq:
+	drm_irq_uninstall(dev);
+cleanup_gem_stolen:
+#ifdef notyet
+	i915_gem_cleanup_stolen(dev);
+#endif
 	return (ret);
 }
 
diff --git a/sys/dev/pci/drm/i915/i915_drv.c b/sys/dev/pci/drm/i915/i915_drv.c
index f09895c5cee..608ac579af5 100644
--- a/sys/dev/pci/drm/i915/i915_drv.c
+++ b/sys/dev/pci/drm/i915/i915_drv.c
@@ -528,6 +528,7 @@ i915_drm_freeze(struct drm_device *dev)
 		intel_modeset_disable(dev);
 
 		drm_irq_uninstall(dev);
+		dev_priv->enable_hotplug_processing = false;
 	}
 
 	i915_save_state(dev);
@@ -559,9 +560,19 @@ __i915_drm_thaw(struct drm_device *dev)
 		error = i915_gem_init_hw(dev);
 		DRM_UNLOCK();
 
+		/* We need working interrupts for modeset enabling ... */
+		drm_irq_install(dev);
+
 		intel_modeset_init_hw(dev);
 		intel_modeset_setup_hw_state(dev, false);
-		drm_irq_install(dev);
+
+		/*
+		 * ... but also need to make sure that hotplug processing
+		 * doesn't cause havoc. Like in the driver load code we don't
+		 * bother with the tiny race here where we might loose hotplug
+		 * notifications.
+		 * */
+		dev_priv->enable_hotplug_processing = true;
 	}
 
 	intel_opregion_init(dev);
diff --git a/sys/dev/pci/drm/i915/i915_drv.h b/sys/dev/pci/drm/i915/i915_drv.h
index 042e3ad87d9..b671825a4d8 100644
--- a/sys/dev/pci/drm/i915/i915_drv.h
+++ b/sys/dev/pci/drm/i915/i915_drv.h
@@ -560,6 +560,7 @@ struct inteldrm_softc {
 
 	u_int32_t		 hotplug_supported_mask;
 	struct workq_task	 hotplug_task;
+	bool			 enable_hotplug_processing;
 
 	int			 num_pipe;
 	int			 num_pch_pll;
diff --git a/sys/dev/pci/drm/i915/i915_irq.c b/sys/dev/pci/drm/i915/i915_irq.c
index f550d346774..460e6219a27 100644
--- a/sys/dev/pci/drm/i915/i915_irq.c
+++ b/sys/dev/pci/drm/i915/i915_irq.c
@@ -348,6 +348,10 @@ i915_hotplug_work_func(void *arg1, void *arg2)
 	struct drm_mode_config *mode_config = &dev->mode_config;
 	struct intel_encoder *encoder;
 
+	/* HPD irq before everything is fully set up. */
+	if (!dev_priv->enable_hotplug_processing)
+		return;
+
 	rw_enter_write(&mode_config->rwl);
 	DRM_DEBUG_KMS("running encoder hotplug functions\n");
 
diff --git a/sys/dev/pci/drm/i915/intel_crt.c b/sys/dev/pci/drm/i915/intel_crt.c
index e5569712658..3f25ad0254b 100644
--- a/sys/dev/pci/drm/i915/intel_crt.c
+++ b/sys/dev/pci/drm/i915/intel_crt.c
@@ -121,7 +121,7 @@ intel_disable_crt(struct intel_encoder *encoder)
 	u32 temp;
 
 	temp = I915_READ(crt->adpa_reg);
-	temp &= ~(ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE);
+	temp |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE;
 	temp &= ~ADPA_DAC_ENABLE;
 	I915_WRITE(crt->adpa_reg, temp);
 }
diff --git a/sys/dev/pci/drm/i915/intel_pm.c b/sys/dev/pci/drm/i915/intel_pm.c
index 95b42a29256..9830f2bd03e 100644
--- a/sys/dev/pci/drm/i915/intel_pm.c
+++ b/sys/dev/pci/drm/i915/intel_pm.c
@@ -2755,7 +2755,7 @@ gen6_enable_rps(struct drm_device *dev)
 	I915_WRITE(GEN6_RC_SLEEP, 0);
 	I915_WRITE(GEN6_RC1e_THRESHOLD, 1000);
 	I915_WRITE(GEN6_RC6_THRESHOLD, 50000);
-	I915_WRITE(GEN6_RC6p_THRESHOLD, 100000);
+	I915_WRITE(GEN6_RC6p_THRESHOLD, 150000);
 	I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */
 
 	/* Check if we are enabling RC6 */