C++ (Cpp) media_devnode_data Examples

Example #1

File: media-device.c Project: Clumsy-Kernel-Development/M9_Kernel

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;
}

Example #2

File: media-devnode.c Project: 0xroot/Blackphone-BP1-Kernel

static ssize_t media_write(struct file *filp, const char __user *buf,
		size_t sz, loff_t *off)
{
	struct media_devnode *mdev = media_devnode_data(filp);

	if (!mdev->fops->write)
		return -EINVAL;
	if (!media_devnode_is_registered(mdev))
		return -EIO;
	return mdev->fops->write(filp, buf, sz, off);
}

Example #3

File: media-devnode.c Project: 0xroot/Blackphone-BP1-Kernel

static unsigned int media_poll(struct file *filp,
			       struct poll_table_struct *poll)
{
	struct media_devnode *mdev = media_devnode_data(filp);

	if (!media_devnode_is_registered(mdev))
		return POLLERR | POLLHUP;
	if (!mdev->fops->poll)
		return DEFAULT_POLLMASK;
	return mdev->fops->poll(filp, poll);
}

Example #4

File: media-devnode.c Project: 0xroot/Blackphone-BP1-Kernel

static long media_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
	struct media_devnode *mdev = media_devnode_data(filp);

	if (!mdev->fops->ioctl)
		return -ENOTTY;

	if (!media_devnode_is_registered(mdev))
		return -EIO;

	return mdev->fops->ioctl(filp, cmd, arg);
}

Example #5

File: media-devnode.c Project: 0xroot/Blackphone-BP1-Kernel

/* Override for the release function */
static int media_release(struct inode *inode, struct file *filp)
{
	struct media_devnode *mdev = media_devnode_data(filp);
	int ret = 0;

	if (mdev->fops->release)
		mdev->fops->release(filp);

	/* decrease the refcount unconditionally since the release()
	   return value is ignored. */
	put_device(&mdev->dev);
	filp->private_data = NULL;
	return ret;
}

Example #6

File: media-device.c Project: lollipop-og/android_kernel_geehrc

    /* LGE_CHANGE_E, [email protected], 2012-10-31, Wise screen / Because of the display engine  */
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;
    /* LGE_CHANGE_S, [email protected], 2012-10-31, Wise screen / Because of the display engine  */
	void __user *argp = (void __user *)arg;
    /* LGE_CHANGE_E, [email protected], 2012-10-31, Wise screen / Because of the display engine  */

	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;

    /* LGE_CHANGE_S, [email protected], 2012-10-31, Wise screen / Because of the display engine  */
	case MEDIA_IOC_SUB_CAM_ID:
		if (copy_from_user(&sub_cam_id_for_keep_screen_on, argp, sizeof(sub_cam_id_for_keep_screen_on))) {
			ret = -EFAULT;
		} else {
			ret = 0;
		}
		break;
    /* LGE_CHANGE_E, [email protected], 2012-10-31, Wise screen / Because of the display engine  */
	default:
		ret = -ENOIOCTLCMD;
	}

	return ret;
}

Example #7

File: media-device.c Project: flar2/m8-Sense-4.4.3

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;
}