Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel…

…/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (55 commits)
  Revert "drm/i915: Try enabling RC6 by default (again)"
  drm/radeon: Extended DDC Probing for ECS A740GM-M DVI-D Connector
  drm/radeon: Log Subsystem Vendor and Device Information
  drm/radeon: Extended DDC Probing for Connectors with Improperly Wired DDC Lines (here: Asus M2A-VM HDMI)
  drm: Separate EDID Header Check from EDID Block Check
  drm: Add NULL check about irq functions
  drm: Fix irq install error handling
  drm/radeon: fix potential NULL dereference in drivers/gpu/drm/radeon/atom.c
  drm/radeon: clean reg header files
  drm/debugfs: Initialise empty variable
  drm/radeon/kms: add thermal chip quirk for asus 9600xt
  drm/radeon: off by one in check_reg() functions
  drm/radeon/kms: fix version comment due to merge timing
  drm/i915: allow cache sharing policy control
  drm/i915/hdmi: HDMI source product description infoframe support
  drm/i915/hdmi: split infoframe setting from infoframe type code
  drm: track CEA version number if present
  drm/i915: Try enabling RC6 by default (again)
  Revert "drm/i915/dp: Zero the DPCD data before connection probe"
  drm/i915/dp: wait for previous AUX channel activity to clear
  ...

drivers/gpu/drm/drm_debugfs.c

@@ -90,7 +90,6 @@ int drm_debugfs_create_files(struct drm_info_list *files, int count,
 	struct drm_device *dev = minor->dev;
 	struct dentry *ent;
 	struct drm_info_node *tmp;
-	char name[64];
 	int i, ret;
 
 	for (i = 0; i < count; i++) {
@@ -108,6 +107,9 @@ int drm_debugfs_create_files(struct drm_info_list *files, int count,
 		ent = debugfs_create_file(files[i].name, S_IFREG | S_IRUGO,
 					  root, tmp, &drm_debugfs_fops);
 		if (!ent) {
+			char name[64];
+			strncpy(name, root->d_name.name,
+						min(root->d_name.len, 64U));
 			DRM_ERROR("Cannot create /sys/kernel/debug/dri/%s/%s\n",
 				  name, files[i].name);
 			kfree(tmp);

drivers/gpu/drm/drm_edid.c

@@ -127,6 +127,23 @@ static const u8 edid_header[] = {
 	0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
 };
 
+ /*
+ * Sanity check the header of the base EDID block.  Return 8 if the header
+ * is perfect, down to 0 if it's totally wrong.
+ */
+int drm_edid_header_is_valid(const u8 *raw_edid)
+{
+	int i, score = 0;
+
+	for (i = 0; i < sizeof(edid_header); i++)
+		if (raw_edid[i] == edid_header[i])
+			score++;
+
+	return score;
+}
+EXPORT_SYMBOL(drm_edid_header_is_valid);
+
+
 /*
  * Sanity check the EDID block (base or extension).  Return 0 if the block
  * doesn't check out, or 1 if it's valid.
@@ -139,12 +156,7 @@ drm_edid_block_valid(u8 *raw_edid)
 	struct edid *edid = (struct edid *)raw_edid;
 
 	if (raw_edid[0] == 0x00) {
-		int score = 0;
-
-		for (i = 0; i < sizeof(edid_header); i++)
-			if (raw_edid[i] == edid_header[i])
-				score++;
-
+		int score = drm_edid_header_is_valid(raw_edid);
 		if (score == 8) ;
 		else if (score >= 6) {
 			DRM_DEBUG("Fixing EDID header, your hardware may be failing\n");
@@ -1439,6 +1451,8 @@ EXPORT_SYMBOL(drm_detect_monitor_audio);
 static void drm_add_display_info(struct edid *edid,
 				 struct drm_display_info *info)
 {
+	u8 *edid_ext;
+
 	info->width_mm = edid->width_cm * 10;
 	info->height_mm = edid->height_cm * 10;
 
@@ -1483,6 +1497,13 @@ static void drm_add_display_info(struct edid *edid,
 		info->color_formats = DRM_COLOR_FORMAT_YCRCB444;
 	if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB422)
 		info->color_formats = DRM_COLOR_FORMAT_YCRCB422;
+
+	/* Get data from CEA blocks if present */
+	edid_ext = drm_find_cea_extension(edid);
+	if (!edid_ext)
+		return;
+
+	info->cea_rev = edid_ext[1];
 }
 
 /**

drivers/gpu/drm/drm_irq.c

@@ -291,11 +291,14 @@ static void drm_irq_vgaarb_nokms(void *cookie, bool state)
 	if (!dev->irq_enabled)
 		return;
 
-	if (state)
-		dev->driver->irq_uninstall(dev);
-	else {
-		dev->driver->irq_preinstall(dev);
-		dev->driver->irq_postinstall(dev);
+	if (state) {
+		if (dev->driver->irq_uninstall)
+			dev->driver->irq_uninstall(dev);
+	} else {
+		if (dev->driver->irq_preinstall)
+			dev->driver->irq_preinstall(dev);
+		if (dev->driver->irq_postinstall)
+			dev->driver->irq_postinstall(dev);
 	}
 }
 
@@ -338,7 +341,8 @@ int drm_irq_install(struct drm_device *dev)
 	DRM_DEBUG("irq=%d\n", drm_dev_to_irq(dev));
 
 	/* Before installing handler */
-	dev->driver->irq_preinstall(dev);
+	if (dev->driver->irq_preinstall)
+		dev->driver->irq_preinstall(dev);
 
 	/* Install handler */
 	if (drm_core_check_feature(dev, DRIVER_IRQ_SHARED))
@@ -363,11 +367,16 @@ int drm_irq_install(struct drm_device *dev)
 		vga_client_register(dev->pdev, (void *)dev, drm_irq_vgaarb_nokms, NULL);
 
 	/* After installing handler */
-	ret = dev->driver->irq_postinstall(dev);
+	if (dev->driver->irq_postinstall)
+		ret = dev->driver->irq_postinstall(dev);
+
 	if (ret < 0) {
 		mutex_lock(&dev->struct_mutex);
 		dev->irq_enabled = 0;
 		mutex_unlock(&dev->struct_mutex);
+		if (!drm_core_check_feature(dev, DRIVER_MODESET))
+			vga_client_register(dev->pdev, NULL, NULL, NULL);
+		free_irq(drm_dev_to_irq(dev), dev);
 	}
 
 	return ret;
@@ -413,7 +422,8 @@ int drm_irq_uninstall(struct drm_device *dev)
 	if (!drm_core_check_feature(dev, DRIVER_MODESET))
 		vga_client_register(dev->pdev, NULL, NULL, NULL);
 
-	dev->driver->irq_uninstall(dev);
+	if (dev->driver->irq_uninstall)
+		dev->driver->irq_uninstall(dev);
 
 	free_irq(drm_dev_to_irq(dev), dev);
 

drivers/gpu/drm/i915/i915_debugfs.c

@@ -1338,6 +1338,155 @@ static const struct file_operations i915_wedged_fops = {
 	.llseek = default_llseek,
 };
 
+static int
+i915_max_freq_open(struct inode *inode,
+		   struct file *filp)
+{
+	filp->private_data = inode->i_private;
+	return 0;
+}
+
+static ssize_t
+i915_max_freq_read(struct file *filp,
+		   char __user *ubuf,
+		   size_t max,
+		   loff_t *ppos)
+{
+	struct drm_device *dev = filp->private_data;
+	drm_i915_private_t *dev_priv = dev->dev_private;
+	char buf[80];
+	int len;
+
+	len = snprintf(buf, sizeof (buf),
+		       "max freq: %d\n", dev_priv->max_delay * 50);
+
+	if (len > sizeof (buf))
+		len = sizeof (buf);
+
+	return simple_read_from_buffer(ubuf, max, ppos, buf, len);
+}
+
+static ssize_t
+i915_max_freq_write(struct file *filp,
+		  const char __user *ubuf,
+		  size_t cnt,
+		  loff_t *ppos)
+{
+	struct drm_device *dev = filp->private_data;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	char buf[20];
+	int val = 1;
+
+	if (cnt > 0) {
+		if (cnt > sizeof (buf) - 1)
+			return -EINVAL;
+
+		if (copy_from_user(buf, ubuf, cnt))
+			return -EFAULT;
+		buf[cnt] = 0;
+
+		val = simple_strtoul(buf, NULL, 0);
+	}
+
+	DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
+
+	/*
+	 * Turbo will still be enabled, but won't go above the set value.
+	 */
+	dev_priv->max_delay = val / 50;
+
+	gen6_set_rps(dev, val / 50);
+
+	return cnt;
+}
+
+static const struct file_operations i915_max_freq_fops = {
+	.owner = THIS_MODULE,
+	.open = i915_max_freq_open,
+	.read = i915_max_freq_read,
+	.write = i915_max_freq_write,
+	.llseek = default_llseek,
+};
+
+static int
+i915_cache_sharing_open(struct inode *inode,
+		   struct file *filp)
+{
+	filp->private_data = inode->i_private;
+	return 0;
+}
+
+static ssize_t
+i915_cache_sharing_read(struct file *filp,
+		   char __user *ubuf,
+		   size_t max,
+		   loff_t *ppos)
+{
+	struct drm_device *dev = filp->private_data;
+	drm_i915_private_t *dev_priv = dev->dev_private;
+	char buf[80];
+	u32 snpcr;
+	int len;
+
+	mutex_lock(&dev_priv->dev->struct_mutex);
+	snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
+	mutex_unlock(&dev_priv->dev->struct_mutex);
+
+	len = snprintf(buf, sizeof (buf),
+		       "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
+		       GEN6_MBC_SNPCR_SHIFT);
+
+	if (len > sizeof (buf))
+		len = sizeof (buf);
+
+	return simple_read_from_buffer(ubuf, max, ppos, buf, len);
+}
+
+static ssize_t
+i915_cache_sharing_write(struct file *filp,
+		  const char __user *ubuf,
+		  size_t cnt,
+		  loff_t *ppos)
+{
+	struct drm_device *dev = filp->private_data;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	char buf[20];
+	u32 snpcr;
+	int val = 1;
+
+	if (cnt > 0) {
+		if (cnt > sizeof (buf) - 1)
+			return -EINVAL;
+
+		if (copy_from_user(buf, ubuf, cnt))
+			return -EFAULT;
+		buf[cnt] = 0;
+
+		val = simple_strtoul(buf, NULL, 0);
+	}
+
+	if (val < 0 || val > 3)
+		return -EINVAL;
+
+	DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
+
+	/* Update the cache sharing policy here as well */
+	snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
+	snpcr &= ~GEN6_MBC_SNPCR_MASK;
+	snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
+	I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
+
+	return cnt;
+}
+
+static const struct file_operations i915_cache_sharing_fops = {
+	.owner = THIS_MODULE,
+	.open = i915_cache_sharing_open,
+	.read = i915_cache_sharing_read,
+	.write = i915_cache_sharing_write,
+	.llseek = default_llseek,
+};
+
 /* As the drm_debugfs_init() routines are called before dev->dev_private is
  * allocated we need to hook into the minor for release. */
 static int
@@ -1437,6 +1586,36 @@ static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
 	return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
 }
 
+static int i915_max_freq_create(struct dentry *root, struct drm_minor *minor)
+{
+	struct drm_device *dev = minor->dev;
+	struct dentry *ent;
+
+	ent = debugfs_create_file("i915_max_freq",
+				  S_IRUGO | S_IWUSR,
+				  root, dev,
+				  &i915_max_freq_fops);
+	if (IS_ERR(ent))
+		return PTR_ERR(ent);
+
+	return drm_add_fake_info_node(minor, ent, &i915_max_freq_fops);
+}
+
+static int i915_cache_sharing_create(struct dentry *root, struct drm_minor *minor)
+{
+	struct drm_device *dev = minor->dev;
+	struct dentry *ent;
+
+	ent = debugfs_create_file("i915_cache_sharing",
+				  S_IRUGO | S_IWUSR,
+				  root, dev,
+				  &i915_cache_sharing_fops);
+	if (IS_ERR(ent))
+		return PTR_ERR(ent);
+
+	return drm_add_fake_info_node(minor, ent, &i915_cache_sharing_fops);
+}
+
 static struct drm_info_list i915_debugfs_list[] = {
 	{"i915_capabilities", i915_capabilities, 0},
 	{"i915_gem_objects", i915_gem_object_info, 0},
@@ -1488,6 +1667,12 @@ int i915_debugfs_init(struct drm_minor *minor)
 		return ret;
 
 	ret = i915_forcewake_create(minor->debugfs_root, minor);
+	if (ret)
+		return ret;
+	ret = i915_max_freq_create(minor->debugfs_root, minor);
+	if (ret)
+		return ret;
+	ret = i915_cache_sharing_create(minor->debugfs_root, minor);
 	if (ret)
 		return ret;
 
@@ -1504,6 +1689,10 @@ void i915_debugfs_cleanup(struct drm_minor *minor)
 				 1, minor);
 	drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
 				 1, minor);
+	drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
+				 1, minor);
+	drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
+				 1, minor);
 }
 
 #endif /* CONFIG_DEBUG_FS */

drivers/gpu/drm/i915/i915_dma.c

@@ -61,7 +61,6 @@ static void i915_write_hws_pga(struct drm_device *dev)
 static int i915_init_phys_hws(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = dev->dev_private;
-	struct intel_ring_buffer *ring = LP_RING(dev_priv);
 
 	/* Program Hardware Status Page */
 	dev_priv->status_page_dmah =
@@ -71,10 +70,9 @@ static int i915_init_phys_hws(struct drm_device *dev)
 		DRM_ERROR("Can not allocate hardware status page\n");
 		return -ENOMEM;
 	}
-	ring->status_page.page_addr =
-		(void __force __iomem *)dev_priv->status_page_dmah->vaddr;
 
-	memset_io(ring->status_page.page_addr, 0, PAGE_SIZE);
+	memset_io((void __force __iomem *)dev_priv->status_page_dmah->vaddr,
+		  0, PAGE_SIZE);
 
 	i915_write_hws_pga(dev);
 

drivers/gpu/drm/i915/i915_drv.h

@@ -544,6 +544,7 @@ typedef struct drm_i915_private {
 	u32 savePIPEB_LINK_M1;
 	u32 savePIPEB_LINK_N1;
 	u32 saveMCHBAR_RENDER_STANDBY;
+	u32 savePCH_PORT_HOTPLUG;
 
 	struct {
 		/** Bridge to intel-gtt-ko */

drivers/gpu/drm/i915/i915_gem.c

@@ -3112,7 +3112,7 @@ i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
 
 	if (pipelined != obj->ring) {
 		ret = i915_gem_object_wait_rendering(obj);
-		if (ret)
+		if (ret == -ERESTARTSYS)
 			return ret;
 	}