1 files changed, 0 insertions, 466 deletions
diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c
deleted file mode 100644
index d5a7a135f75d..000000000000
--- a/drivers/media/media-device.c
+++ /dev/null
@@ -1,466 +0,0 @@
-/*
- * Media device
- *
- * Copyright (C) 2010 Nokia Corporation
- *
- * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
- *	     Sakari Ailus <sakari.ailus@iki.fi>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <linux/compat.h>
-#include <linux/export.h>
-#include <linux/ioctl.h>
-#include <linux/media.h>
-#include <linux/types.h>
-
-#include <media/media-device.h>
-#include <media/media-devnode.h>
-#include <media/media-entity.h>
-
-/* -----------------------------------------------------------------------------
- * Userspace API
- */
-
-static int media_device_open(struct file *filp)
-{
-	return 0;
-}
-
-static int media_device_close(struct file *filp)
-{
-	return 0;
-}
-
-static int media_device_get_info(struct media_device *dev,
-				 struct media_device_info __user *__info)
-{
-	struct media_device_info info;
-
-	memset(&info, 0, sizeof(info));
-
-	strlcpy(info.driver, dev->dev->driver->name, sizeof(info.driver));
-	strlcpy(info.model, dev->model, sizeof(info.model));
-	strlcpy(info.serial, dev->serial, sizeof(info.serial));
-	strlcpy(info.bus_info, dev->bus_info, sizeof(info.bus_info));
-
-	info.media_version = MEDIA_API_VERSION;
-	info.hw_revision = dev->hw_revision;
-	info.driver_version = dev->driver_version;
-
-	if (copy_to_user(__info, &info, sizeof(*__info)))
-		return -EFAULT;
-	return 0;
-}
-
-static struct media_entity *find_entity(struct media_device *mdev, u32 id)
-{
-	struct media_entity *entity;
-	int next = id & MEDIA_ENT_ID_FLAG_NEXT;
-
-	id &= ~MEDIA_ENT_ID_FLAG_NEXT;
-
-	spin_lock(&mdev->lock);
-
-	media_device_for_each_entity(entity, mdev) {
-		if ((entity->id == id && !next) ||
-		    (entity->id > id && next)) {
-			spin_unlock(&mdev->lock);
-			return entity;
-		}
-	}
-
-	spin_unlock(&mdev->lock);
-
-	return NULL;
-}
-
-static long media_device_enum_entities(struct media_device *mdev,
-				       struct media_entity_desc __user *uent)
-{
-	struct media_entity *ent;
-	struct media_entity_desc u_ent;
-
-	if (copy_from_user(&u_ent.id, &uent->id, sizeof(u_ent.id)))
-		return -EFAULT;
-
-	ent = find_entity(mdev, u_ent.id);
-
-	if (ent == NULL)
-		return -EINVAL;
-
-	u_ent.id = ent->id;
-	if (ent->name) {
-		strncpy(u_ent.name, ent->name, sizeof(u_ent.name));
-		u_ent.name[sizeof(u_ent.name) - 1] = '\0';
-	} else {
-		memset(u_ent.name, 0, sizeof(u_ent.name));
-	}
-	u_ent.type = ent->type;
-	u_ent.revision = ent->revision;
-	u_ent.flags = ent->flags;
-	u_ent.group_id = ent->group_id;
-	u_ent.pads = ent->num_pads;
-	u_ent.links = ent->num_links - ent->num_backlinks;
-	memcpy(&u_ent.raw, &ent->info, sizeof(ent->info));
-	if (copy_to_user(uent, &u_ent, sizeof(u_ent)))
-		return -EFAULT;
-	return 0;
-}
-
-static void media_device_kpad_to_upad(const struct media_pad *kpad,
-				      struct media_pad_desc *upad)
-{
-	upad->entity = kpad->entity->id;
-	upad->index = kpad->index;
-	upad->flags = kpad->flags;
-}
-
-static long __media_device_enum_links(struct media_device *mdev,
-				      struct media_links_enum *links)
-{
-	struct media_entity *entity;
-
-	entity = find_entity(mdev, links->entity);
-	if (entity == NULL)
-		return -EINVAL;
-
-	if (links->pads) {
-		unsigned int p;
-
-		for (p = 0; p < entity->num_pads; p++) {
-			struct media_pad_desc pad;
-
-			memset(&pad, 0, sizeof(pad));
-			media_device_kpad_to_upad(&entity->pads[p], &pad);
-			if (copy_to_user(&links->pads[p], &pad, sizeof(pad)))
-				return -EFAULT;
-		}
-	}
-
-	if (links->links) {
-		struct media_link_desc __user *ulink;
-		unsigned int l;
-
-		for (l = 0, ulink = links->links; l < entity->num_links; l++) {
-			struct media_link_desc link;
-
-			/* Ignore backlinks. */
-			if (entity->links[l].source->entity != entity)
-				continue;
-
-			memset(&link, 0, sizeof(link));
-			media_device_kpad_to_upad(entity->links[l].source,
-						  &link.source);
-			media_device_kpad_to_upad(entity->links[l].sink,
-						  &link.sink);
-			link.flags = entity->links[l].flags;
-			if (copy_to_user(ulink, &link, sizeof(*ulink)))
-				return -EFAULT;
-			ulink++;
-		}
-	}
-
-	return 0;
-}
-
-static long media_device_enum_links(struct media_device *mdev,
-				    struct media_links_enum __user *ulinks)
-{
-	struct media_links_enum links;
-	int rval;
-
-	if (copy_from_user(&links, ulinks, sizeof(links)))
-		return -EFAULT;
-
-	rval = __media_device_enum_links(mdev, &links);
-	if (rval < 0)
-		return rval;
-
-	if (copy_to_user(ulinks, &links, sizeof(*ulinks)))
-		return -EFAULT;
-
-	return 0;
-}
-
-static long media_device_setup_link(struct media_device *mdev,
-				    struct media_link_desc __user *_ulink)
-{
-	struct media_link *link = NULL;
-	struct media_link_desc ulink;
-	struct media_entity *source;
-	struct media_entity *sink;
-	int ret;
-
-	if (copy_from_user(&ulink, _ulink, sizeof(ulink)))
-		return -EFAULT;
-
-	/* Find the source and sink entities and link.
-	 */
-	source = find_entity(mdev, ulink.source.entity);
-	sink = find_entity(mdev, ulink.sink.entity);
-
-	if (source == NULL || sink == NULL)
-		return -EINVAL;
-
-	if (ulink.source.index >= source->num_pads ||
-	    ulink.sink.index >= sink->num_pads)
-		return -EINVAL;
-
-	link = media_entity_find_link(&source->pads[ulink.source.index],
-				      &sink->pads[ulink.sink.index]);
-	if (link == NULL)
-		return -EINVAL;
-
-	/* Setup the link on both entities. */
-	ret = __media_entity_setup_link(link, ulink.flags);
-
-	if (copy_to_user(_ulink, &ulink, sizeof(ulink)))
-		return -EFAULT;
-
-	return ret;
-}
-
-static long media_device_ioctl(struct file *filp, unsigned int cmd,
-			       unsigned long arg)
-{
-	struct media_devnode *devnode = media_devnode_data(filp);
-	struct media_device *dev = to_media_device(devnode);
-	long ret;
-
-	switch (cmd) {
-	case MEDIA_IOC_DEVICE_INFO:
-		ret = media_device_get_info(dev,
-				(struct media_device_info __user *)arg);
-		break;
-
-	case MEDIA_IOC_ENUM_ENTITIES:
-		ret = media_device_enum_entities(dev,
-				(struct media_entity_desc __user *)arg);
-		break;
-
-	case MEDIA_IOC_ENUM_LINKS:
-		mutex_lock(&dev->graph_mutex);
-		ret = media_device_enum_links(dev,
-				(struct media_links_enum __user *)arg);
-		mutex_unlock(&dev->graph_mutex);
-		break;
-
-	case MEDIA_IOC_SETUP_LINK:
-		mutex_lock(&dev->graph_mutex);
-		ret = media_device_setup_link(dev,
-				(struct media_link_desc __user *)arg);
-		mutex_unlock(&dev->graph_mutex);
-		break;
-
-	default:
-		ret = -ENOIOCTLCMD;
-	}
-
-	return ret;
-}
-
-#ifdef CONFIG_COMPAT
-
-struct media_links_enum32 {
-	__u32 entity;
-	compat_uptr_t pads; /* struct media_pad_desc * */
-	compat_uptr_t links; /* struct media_link_desc * */
-	__u32 reserved[4];
-};
-
-static long media_device_enum_links32(struct media_device *mdev,
-				      struct media_links_enum32 __user *ulinks)
-{
-	struct media_links_enum links;
-	compat_uptr_t pads_ptr, links_ptr;
-
-	memset(&links, 0, sizeof(links));
-
-	if (get_user(links.entity, &ulinks->entity)
-	    || get_user(pads_ptr, &ulinks->pads)
-	    || get_user(links_ptr, &ulinks->links))
-		return -EFAULT;
-
-	links.pads = compat_ptr(pads_ptr);
-	links.links = compat_ptr(links_ptr);
-
-	return __media_device_enum_links(mdev, &links);
-}
-
-#define MEDIA_IOC_ENUM_LINKS32		_IOWR('|', 0x02, struct media_links_enum32)
-
-static long media_device_compat_ioctl(struct file *filp, unsigned int cmd,
-				      unsigned long arg)
-{
-	struct media_devnode *devnode = media_devnode_data(filp);
-	struct media_device *dev = to_media_device(devnode);
-	long ret;
-
-	switch (cmd) {
-	case MEDIA_IOC_DEVICE_INFO:
-	case MEDIA_IOC_ENUM_ENTITIES:
-	case MEDIA_IOC_SETUP_LINK:
-		return media_device_ioctl(filp, cmd, arg);
-
-	case MEDIA_IOC_ENUM_LINKS32:
-		mutex_lock(&dev->graph_mutex);
-		ret = media_device_enum_links32(dev,
-				(struct media_links_enum32 __user *)arg);
-		mutex_unlock(&dev->graph_mutex);
-		break;
-
-	default:
-		ret = -ENOIOCTLCMD;
-	}
-
-	return ret;
-}
-#endif /* CONFIG_COMPAT */
-
-static const struct media_file_operations media_device_fops = {
-	.owner = THIS_MODULE,
-	.open = media_device_open,
-	.ioctl = media_device_ioctl,
-#ifdef CONFIG_COMPAT
-	.compat_ioctl = media_device_compat_ioctl,
-#endif /* CONFIG_COMPAT */
-	.release = media_device_close,
-};
-
-/* -----------------------------------------------------------------------------
- * sysfs
- */
-
-static ssize_t show_model(struct device *cd,
-			  struct device_attribute *attr, char *buf)
-{
-	struct media_device *mdev = to_media_device(to_media_devnode(cd));
-
-	return sprintf(buf, "%.*s\n", (int)sizeof(mdev->model), mdev->model);
-}
-
-static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
-
-/* -----------------------------------------------------------------------------
- * Registration/unregistration
- */
-
-static void media_device_release(struct media_devnode *mdev)
-{
-}
-
-/**
- * media_device_register - register a media device
- * @mdev:	The media device
- *
- * The caller is responsible for initializing the media device before
- * registration. The following fields must be set:
- *
- * - dev must point to the parent device
- * - model must be filled with the device model name
- */
-int __must_check media_device_register(struct media_device *mdev)
-{
-	int ret;
-
-	if (WARN_ON(mdev->dev == NULL || mdev->model[0] == 0))
-		return -EINVAL;
-
-	mdev->entity_id = 1;
-	INIT_LIST_HEAD(&mdev->entities);
-	spin_lock_init(&mdev->lock);
-	mutex_init(&mdev->graph_mutex);
-
-	/* Register the device node. */
-	mdev->devnode.fops = &media_device_fops;
-	mdev->devnode.parent = mdev->dev;
-	mdev->devnode.release = media_device_release;
-	ret = media_devnode_register(&mdev->devnode);
-	if (ret < 0)
-		return ret;
-
-	ret = device_create_file(&mdev->devnode.dev, &dev_attr_model);
-	if (ret < 0) {
-		media_devnode_unregister(&mdev->devnode);
-		return ret;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(media_device_register);
-
-/**
- * media_device_unregister - unregister a media device
- * @mdev:	The media device
- *
- */
-void media_device_unregister(struct media_device *mdev)
-{
-	struct media_entity *entity;
-	struct media_entity *next;
-
-	list_for_each_entry_safe(entity, next, &mdev->entities, list)
-		media_device_unregister_entity(entity);
-
-	device_remove_file(&mdev->devnode.dev, &dev_attr_model);
-	media_devnode_unregister(&mdev->devnode);
-}
-EXPORT_SYMBOL_GPL(media_device_unregister);
-
-/**
- * media_device_register_entity - Register an entity with a media device
- * @mdev:	The media device
- * @entity:	The entity
- */
-int __must_check media_device_register_entity(struct media_device *mdev,
-					      struct media_entity *entity)
-{
-	/* Warn if we apparently re-register an entity */
-	WARN_ON(entity->parent != NULL);
-	entity->parent = mdev;
-
-	spin_lock(&mdev->lock);
-	if (entity->id == 0)
-		entity->id = mdev->entity_id++;
-	else
-		mdev->entity_id = max(entity->id + 1, mdev->entity_id);
-	list_add_tail(&entity->list, &mdev->entities);
-	spin_unlock(&mdev->lock);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(media_device_register_entity);
-
-/**
- * media_device_unregister_entity - Unregister an entity
- * @entity:	The entity
- *
- * If the entity has never been registered this function will return
- * immediately.
- */
-void media_device_unregister_entity(struct media_entity *entity)
-{
-	struct media_device *mdev = entity->parent;
-
-	if (mdev == NULL)
-		return;
-
-	spin_lock(&mdev->lock);
-	list_del(&entity->list);
-	spin_unlock(&mdev->lock);
-	entity->parent = NULL;
-}
-EXPORT_SYMBOL_GPL(media_device_unregister_entity);