1 files changed, 46 insertions, 25 deletions

diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index bd9b8ab4f82b..b01ffa4d6509 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -18,6 +18,7 @@
 #include <linux/gfp.h>
 #include <linux/i2c.h>
 #include <linux/kdev_t.h>
+#include <linux/pci.h>
 #include <linux/property.h>
 #include <linux/slab.h>
 
@@ -30,6 +31,8 @@
 #include <drm/drm_property.h>
 #include <drm/drm_sysfs.h>
 
+#include <asm/video.h>
+
 #include "drm_internal.h"
 #include "drm_crtc_internal.h"
 
@@ -261,34 +264,14 @@ static ssize_t enabled_show(struct device *device,
 }
 
 static ssize_t edid_show(struct file *filp, struct kobject *kobj,
-			 struct bin_attribute *attr, char *buf, loff_t off,
+			 const struct bin_attribute *attr, char *buf, loff_t off,
 			 size_t count)
 {
 	struct device *connector_dev = kobj_to_dev(kobj);
 	struct drm_connector *connector = to_drm_connector(connector_dev);
-	unsigned char *edid;
-	size_t size;
-	ssize_t ret = 0;
-
-	mutex_lock(&connector->dev->mode_config.mutex);
-	if (!connector->edid_blob_ptr)
-		goto unlock;
-
-	edid = connector->edid_blob_ptr->data;
-	size = connector->edid_blob_ptr->length;
-	if (!edid)
-		goto unlock;
+	ssize_t ret;
 
-	if (off >= size)
-		goto unlock;
-
-	if (off + count > size)
-		count = size - off;
-	memcpy(buf, edid + off, count);
-
-	ret = count;
-unlock:
-	mutex_unlock(&connector->dev->mode_config.mutex);
+	ret = drm_edid_connector_property_show(connector, buf, off, count);
 
 	return ret;
 }
@@ -335,14 +318,14 @@ static struct attribute *connector_dev_attrs[] = {
 	NULL
 };
 
-static struct bin_attribute edid_attr = {
+static const struct bin_attribute edid_attr = {
 	.attr.name = "edid",
 	.attr.mode = 0444,
 	.size = 0,
 	.read = edid_show,
 };
 
-static struct bin_attribute *connector_bin_attrs[] = {
+static const struct bin_attribute *const connector_bin_attrs[] = {
 	&edid_attr,
 	NULL
 };
@@ -528,6 +511,43 @@ void drm_sysfs_connector_property_event(struct drm_connector *connector,
 }
 EXPORT_SYMBOL(drm_sysfs_connector_property_event);
 
+static ssize_t boot_display_show(struct device *dev, struct device_attribute *attr,
+				 char *buf)
+{
+	return sysfs_emit(buf, "1\n");
+}
+static DEVICE_ATTR_RO(boot_display);
+
+static struct attribute *display_attrs[] = {
+	&dev_attr_boot_display.attr,
+	NULL
+};
+
+static umode_t boot_display_visible(struct kobject *kobj,
+				    struct attribute *a, int n)
+{
+	struct device *dev = kobj_to_dev(kobj)->parent;
+
+	if (dev_is_pci(dev)) {
+		struct pci_dev *pdev = to_pci_dev(dev);
+
+		if (video_is_primary_device(&pdev->dev))
+			return a->mode;
+	}
+
+	return 0;
+}
+
+static const struct attribute_group display_attr_group = {
+	.attrs = display_attrs,
+	.is_visible = boot_display_visible,
+};
+
+static const struct attribute_group *card_dev_groups[] = {
+	&display_attr_group,
+	NULL
+};
+
 struct device *drm_sysfs_minor_alloc(struct drm_minor *minor)
 {
 	const char *minor_str;
@@ -551,6 +571,7 @@ struct device *drm_sysfs_minor_alloc(struct drm_minor *minor)
 
 		kdev->devt = MKDEV(DRM_MAJOR, minor->index);
 		kdev->class = drm_class;
+		kdev->groups = card_dev_groups;
 		kdev->type = &drm_sysfs_device_minor;
 	}