drm: reorganise minor number handling using backported modesetting code.

rips out the head crap and replaces it with an idr and drm_minor structure

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 26 insertions, 20 deletions

diff --git a/drivers/char/drm/drm_sysfs.c b/drivers/char/drm/drm_sysfs.c
index 05ed5043254f..7a1d9a782ddb 100644
--- a/drivers/char/drm/drm_sysfs.c
+++ b/drivers/char/drm/drm_sysfs.c
@@ -19,7 +19,7 @@
 #include "drm_core.h"
 #include "drmP.h"
 
-#define to_drm_device(d) container_of(d, struct drm_device, dev)
+#define to_drm_minor(d) container_of(d, struct drm_minor, kdev)
 
 /**
  * drm_sysfs_suspend - DRM class suspend hook
@@ -31,7 +31,8 @@
  */
 static int drm_sysfs_suspend(struct device *dev, pm_message_t state)
 {
-        struct drm_device *drm_dev = to_drm_device(dev);
+        struct drm_minor *drm_minor = to_drm_minor(dev);
+        struct drm_device *drm_dev = drm_minor->dev;
 
         printk(KERN_ERR "%s\n", __FUNCTION__);
 
@@ -50,7 +51,8 @@ static int drm_sysfs_suspend(struct device *dev, pm_message_t state)
  */
 static int drm_sysfs_resume(struct device *dev)
 {
-        struct drm_device *drm_dev = to_drm_device(dev);
+        struct drm_minor *drm_minor = to_drm_minor(dev);
+        struct drm_device *drm_dev = drm_minor->dev;
 
         if (drm_dev->driver->resume)
                 return drm_dev->driver->resume(drm_dev);
@@ -120,10 +122,11 @@ void drm_sysfs_destroy(void)
 static ssize_t show_dri(struct device *device, struct device_attribute *attr,
                         char *buf)
 {
-        struct drm_device *dev = to_drm_device(device);
-        if (dev->driver->dri_library_name)
-                return dev->driver->dri_library_name(dev, buf);
-        return snprintf(buf, PAGE_SIZE, "%s\n", dev->driver->pci_driver.name);
+        struct drm_minor *drm_minor = to_drm_minor(device);
+        struct drm_device *drm_dev = drm_minor->dev;
+        if (drm_dev->driver->dri_library_name)
+                return drm_dev->driver->dri_library_name(drm_dev, buf);
+        return snprintf(buf, PAGE_SIZE, "%s\n", drm_dev->driver->pci_driver.name);
 }
 
 static struct device_attribute device_attrs[] = {
@@ -152,25 +155,28 @@ static void drm_sysfs_device_release(struct device *dev)
  * as the parent for the Linux device, and make sure it has a file containing
  * the driver we're using (for userspace compatibility).
  */
-int drm_sysfs_device_add(struct drm_device *dev, struct drm_head *head)
+int drm_sysfs_device_add(struct drm_minor *minor)
 {
         int err;
         int i, j;
+        char *minor_str;
 
-        dev->dev.parent = &dev->pdev->dev;
-        dev->dev.class = drm_class;
-        dev->dev.release = drm_sysfs_device_release;
-        dev->dev.devt = head->device;
-        snprintf(dev->dev.bus_id, BUS_ID_SIZE, "card%d", head->minor);
+        minor->kdev.parent = &minor->dev->pdev->dev;
+        minor->kdev.class = drm_class;
+        minor->kdev.release = drm_sysfs_device_release;
+        minor->kdev.devt = minor->device;
+        minor_str = "card%d";
 
-        err = device_register(&dev->dev);
+        snprintf(minor->kdev.bus_id, BUS_ID_SIZE, minor_str, minor->index);
+
+        err = device_register(&minor->kdev);
         if (err) {
                 DRM_ERROR("device add failed: %d\n", err);
                 goto err_out;
         }
 
         for (i = 0; i < ARRAY_SIZE(device_attrs); i++) {
-                err = device_create_file(&dev->dev, &device_attrs[i]);
+                err = device_create_file(&minor->kdev, &device_attrs[i]);
                 if (err)
                         goto err_out_files;
         }
@@ -180,8 +186,8 @@ int drm_sysfs_device_add(struct drm_device *dev, struct drm_head *head)
 err_out_files:
         if (i > 0)
                 for (j = 0; j < i; j++)
-                        device_remove_file(&dev->dev, &device_attrs[i]);
-        device_unregister(&dev->dev);
+                        device_remove_file(&minor->kdev, &device_attrs[i]);
+        device_unregister(&minor->kdev);
 err_out:
 
         return err;
@@ -194,11 +200,11 @@ err_out:
  * This call unregisters and cleans up a class device that was created with a
  * call to drm_sysfs_device_add()
  */
-void drm_sysfs_device_remove(struct drm_device *dev)
+void drm_sysfs_device_remove(struct drm_minor *minor)
 {
         int i;
 
         for (i = 0; i < ARRAY_SIZE(device_attrs); i++)
-                device_remove_file(&dev->dev, &device_attrs[i]);
-        device_unregister(&dev->dev);
+                device_remove_file(&minor->kdev, &device_attrs[i]);
+        device_unregister(&minor->kdev);
 }