#include <linux/slab.h>
#include <drm/drmP.h>
#include <drm/drm_core.h>
+#include "drm_crtc_internal.h"
#include "drm_legacy.h"
#include "drm_internal.h"
+#include "drm_crtc_internal.h"
/*
* drm_debug: Enable debug output.
}
EXPORT_SYMBOL(drm_ut_debug_printk);
-struct drm_master *drm_master_create(struct drm_minor *minor)
-{
- struct drm_master *master;
-
- master = kzalloc(sizeof(*master), GFP_KERNEL);
- if (!master)
- return NULL;
-
- kref_init(&master->refcount);
- spin_lock_init(&master->lock.spinlock);
- init_waitqueue_head(&master->lock.lock_queue);
- idr_init(&master->magic_map);
- master->minor = minor;
-
- return master;
-}
-
-struct drm_master *drm_master_get(struct drm_master *master)
-{
- kref_get(&master->refcount);
- return master;
-}
-EXPORT_SYMBOL(drm_master_get);
-
-static void drm_master_destroy(struct kref *kref)
-{
- struct drm_master *master = container_of(kref, struct drm_master, refcount);
- struct drm_device *dev = master->minor->dev;
-
- if (dev->driver->master_destroy)
- dev->driver->master_destroy(dev, master);
-
- drm_legacy_master_rmmaps(dev, master);
-
- idr_destroy(&master->magic_map);
- kfree(master->unique);
- kfree(master);
-}
-
-void drm_master_put(struct drm_master **master)
-{
- kref_put(&(*master)->refcount, drm_master_destroy);
- *master = NULL;
-}
-EXPORT_SYMBOL(drm_master_put);
-
-int drm_setmaster_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- int ret = 0;
-
- mutex_lock(&dev->master_mutex);
- if (file_priv->is_master)
- goto out_unlock;
-
- if (file_priv->minor->master) {
- ret = -EINVAL;
- goto out_unlock;
- }
-
- if (!file_priv->master) {
- ret = -EINVAL;
- goto out_unlock;
- }
-
- if (!file_priv->allowed_master) {
- ret = drm_new_set_master(dev, file_priv);
- goto out_unlock;
- }
-
- file_priv->minor->master = drm_master_get(file_priv->master);
- file_priv->is_master = 1;
- if (dev->driver->master_set) {
- ret = dev->driver->master_set(dev, file_priv, false);
- if (unlikely(ret != 0)) {
- file_priv->is_master = 0;
- drm_master_put(&file_priv->minor->master);
- }
- }
-
-out_unlock:
- mutex_unlock(&dev->master_mutex);
- return ret;
-}
-
-int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- int ret = -EINVAL;
-
- mutex_lock(&dev->master_mutex);
- if (!file_priv->is_master)
- goto out_unlock;
-
- if (!file_priv->minor->master)
- goto out_unlock;
-
- ret = 0;
- if (dev->driver->master_drop)
- dev->driver->master_drop(dev, file_priv, false);
- drm_master_put(&file_priv->minor->master);
- file_priv->is_master = 0;
-
-out_unlock:
- mutex_unlock(&dev->master_mutex);
- return ret;
-}
-
/*
* DRM Minors
* A DRM device can provide several char-dev interfaces on the DRM-Major. Each
* callbacks implemented by the driver. The driver then needs to initialize all
* the various subsystems for the drm device like memory management, vblank
* handling, modesetting support and intial output configuration plus obviously
- * initialize all the corresponding hardware bits. An important part of this is
- * also calling drm_dev_set_unique() to set the userspace-visible unique name of
- * this device instance. Finally when everything is up and running and ready for
- * userspace the device instance can be published using drm_dev_register().
+ * initialize all the corresponding hardware bits. Finally when everything is up
+ * and running and ready for userspace the device instance can be published
+ * using drm_dev_register().
*
* There is also deprecated support for initalizing device instances using
* bus-specific helpers and the ->load() callback. But due to
* dev_priv field of &drm_device.
*/
+static int drm_dev_set_unique(struct drm_device *dev, const char *name)
+{
+ kfree(dev->unique);
+ dev->unique = kstrdup(name, GFP_KERNEL);
+
+ return dev->unique ? 0 : -ENOMEM;
+}
+
/**
* drm_put_dev - Unregister and release a DRM device
* @dev: DRM device
void drm_unplug_dev(struct drm_device *dev)
{
/* for a USB device */
- drm_minor_unregister(dev, DRM_MINOR_LEGACY);
- drm_minor_unregister(dev, DRM_MINOR_RENDER);
- drm_minor_unregister(dev, DRM_MINOR_CONTROL);
+ drm_dev_unregister(dev);
mutex_lock(&drm_global_mutex);
}
/**
- * drm_dev_alloc - Allocate new DRM device
- * @driver: DRM driver to allocate device for
+ * drm_dev_init - Initialise new DRM device
+ * @dev: DRM device
+ * @driver: DRM driver
* @parent: Parent device object
*
- * Allocate and initialize a new DRM device. No device registration is done.
+ * Initialize a new DRM device. No device registration is done.
* Call drm_dev_register() to advertice the device to user space and register it
* with other core subsystems. This should be done last in the device
* initialization sequence to make sure userspace can't access an inconsistent
*
* Note that for purely virtual devices @parent can be NULL.
*
+ * Drivers that do not want to allocate their own device struct
+ * embedding struct &drm_device can call drm_dev_alloc() instead.
+ *
* RETURNS:
- * Pointer to new DRM device, or NULL if out of memory.
+ * 0 on success, or error code on failure.
*/
-struct drm_device *drm_dev_alloc(struct drm_driver *driver,
- struct device *parent)
+int drm_dev_init(struct drm_device *dev,
+ struct drm_driver *driver,
+ struct device *parent)
{
- struct drm_device *dev;
int ret;
- dev = kzalloc(sizeof(*dev), GFP_KERNEL);
- if (!dev)
- return NULL;
-
kref_init(&dev->ref);
dev->dev = parent;
dev->driver = driver;
ret = drm_minor_alloc(dev, DRM_MINOR_CONTROL);
if (ret)
goto err_minors;
-
- WARN_ON(driver->suspend || driver->resume);
}
if (drm_core_check_feature(dev, DRIVER_RENDER)) {
if (ret)
goto err_minors;
- if (drm_ht_create(&dev->map_hash, 12))
+ ret = drm_ht_create(&dev->map_hash, 12);
+ if (ret)
goto err_minors;
drm_legacy_ctxbitmap_init(dev);
}
}
- if (parent) {
- ret = drm_dev_set_unique(dev, dev_name(parent));
- if (ret)
- goto err_setunique;
- }
+ /* Use the parent device name as DRM device unique identifier, but fall
+ * back to the driver name for virtual devices like vgem. */
+ ret = drm_dev_set_unique(dev, parent ? dev_name(parent) : driver->name);
+ if (ret)
+ goto err_setunique;
- return dev;
+ return 0;
err_setunique:
if (drm_core_check_feature(dev, DRIVER_GEM))
drm_fs_inode_free(dev->anon_inode);
err_free:
mutex_destroy(&dev->master_mutex);
- kfree(dev);
- return NULL;
+ return ret;
+}
+EXPORT_SYMBOL(drm_dev_init);
+
+/**
+ * drm_dev_alloc - Allocate new DRM device
+ * @driver: DRM driver to allocate device for
+ * @parent: Parent device object
+ *
+ * Allocate and initialize a new DRM device. No device registration is done.
+ * Call drm_dev_register() to advertice the device to user space and register it
+ * with other core subsystems. This should be done last in the device
+ * initialization sequence to make sure userspace can't access an inconsistent
+ * state.
+ *
+ * The initial ref-count of the object is 1. Use drm_dev_ref() and
+ * drm_dev_unref() to take and drop further ref-counts.
+ *
+ * Note that for purely virtual devices @parent can be NULL.
+ *
+ * Drivers that wish to subclass or embed struct &drm_device into their
+ * own struct should look at using drm_dev_init() instead.
+ *
+ * RETURNS:
+ * Pointer to new DRM device, or NULL if out of memory.
+ */
+struct drm_device *drm_dev_alloc(struct drm_driver *driver,
+ struct device *parent)
+{
+ struct drm_device *dev;
+ int ret;
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return NULL;
+
+ ret = drm_dev_init(dev, driver, parent);
+ if (ret) {
+ kfree(dev);
+ return NULL;
+ }
+
+ return dev;
}
EXPORT_SYMBOL(drm_dev_alloc);
*
* Register the DRM device @dev with the system, advertise device to user-space
* and start normal device operation. @dev must be allocated via drm_dev_alloc()
- * previously. Right after drm_dev_register() the driver should call
- * drm_connector_register_all() to register all connectors in sysfs. This is
- * a separate call for backward compatibility with drivers still using
- * the deprecated ->load() callback, where connectors are registered from within
- * the ->load() callback.
+ * previously.
*
* Never call this twice on any device!
*
goto err_minors;
}
+ if (drm_core_check_feature(dev, DRIVER_MODESET))
+ drm_modeset_register_all(dev);
+
ret = 0;
goto out_unlock;
drm_lastclose(dev);
+ if (drm_core_check_feature(dev, DRIVER_MODESET))
+ drm_modeset_unregister_all(dev);
+
if (dev->driver->unload)
dev->driver->unload(dev);
}
EXPORT_SYMBOL(drm_dev_unregister);
-/**
- * drm_dev_set_unique - Set the unique name of a DRM device
- * @dev: device of which to set the unique name
- * @name: unique name
- *
- * Sets the unique name of a DRM device using the specified string. Drivers
- * can use this at driver probe time if the unique name of the devices they
- * drive is static.
- *
- * Return: 0 on success or a negative error code on failure.
- */
-int drm_dev_set_unique(struct drm_device *dev, const char *name)
-{
- kfree(dev->unique);
- dev->unique = kstrdup(name, GFP_KERNEL);
-
- return dev->unique ? 0 : -ENOMEM;
-}
-EXPORT_SYMBOL(drm_dev_set_unique);
-
/*
* DRM Core
* The DRM core module initializes all global DRM objects and makes them
projects / cascardo / linux.git / blobdiff