C++ (Cpp) media_device_get_infoの例

コード例 #1

ファイル: media-device.c プロジェクト: 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;
}

コード例 #2

ファイル: media-device.c プロジェクト: 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;
}