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- #ifndef _V4L2_DEV_H
- #define _V4L2_DEV_H
- #include <linux/poll.h>
- #include <linux/fs.h>
- #include <linux/device.h>
- #include <linux/cdev.h>
- #include <linux/mutex.h>
- #include <linux/videodev2.h>
- #include <media/media-entity.h>
- #define VIDEO_MAJOR 81
- #define VFL_TYPE_GRABBER 0
- #define VFL_TYPE_VBI 1
- #define VFL_TYPE_RADIO 2
- #define VFL_TYPE_SUBDEV 3
- #define VFL_TYPE_SDR 4
- #define VFL_TYPE_TOUCH 5
- #define VFL_TYPE_MAX 6
- #define VFL_DIR_RX 0
- #define VFL_DIR_TX 1
- #define VFL_DIR_M2M 2
- struct v4l2_ioctl_callbacks;
- struct video_device;
- struct v4l2_device;
- struct v4l2_ctrl_handler;
- #define V4L2_FL_REGISTERED (0)
- #define V4L2_FL_USES_V4L2_FH (1)
- struct v4l2_prio_state {
- atomic_t prios[4];
- };
- void v4l2_prio_init(struct v4l2_prio_state *global);
- int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,
- enum v4l2_priority new);
- void v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local);
- void v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority local);
- enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global);
- int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority local);
- struct v4l2_file_operations {
- struct module *owner;
- ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
- ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
- unsigned int (*poll) (struct file *, struct poll_table_struct *);
- long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
- #ifdef CONFIG_COMPAT
- long (*compat_ioctl32) (struct file *, unsigned int, unsigned long);
- #endif
- unsigned long (*get_unmapped_area) (struct file *, unsigned long,
- unsigned long, unsigned long, unsigned long);
- int (*mmap) (struct file *, struct vm_area_struct *);
- int (*open) (struct file *);
- int (*release) (struct file *);
- };
- struct video_device
- {
- #if defined(CONFIG_MEDIA_CONTROLLER)
- struct media_entity entity;
- struct media_intf_devnode *intf_devnode;
- struct media_pipeline pipe;
- #endif
- const struct v4l2_file_operations *fops;
- u32 device_caps;
-
- struct device dev;
- struct cdev *cdev;
- struct v4l2_device *v4l2_dev;
- struct device *dev_parent;
- struct v4l2_ctrl_handler *ctrl_handler;
- struct vb2_queue *queue;
- struct v4l2_prio_state *prio;
-
- char name[32];
- int vfl_type;
- int vfl_dir;
- int minor;
- u16 num;
- unsigned long flags;
- int index;
-
- spinlock_t fh_lock;
- struct list_head fh_list;
- int dev_debug;
- v4l2_std_id tvnorms;
-
- void (*release)(struct video_device *vdev);
- const struct v4l2_ioctl_ops *ioctl_ops;
- DECLARE_BITMAP(valid_ioctls, BASE_VIDIOC_PRIVATE);
- DECLARE_BITMAP(disable_locking, BASE_VIDIOC_PRIVATE);
- struct mutex *lock;
- };
- #define media_entity_to_video_device(__e) \
- container_of(__e, struct video_device, entity)
- #define to_video_device(cd) container_of(cd, struct video_device, dev)
- int __must_check __video_register_device(struct video_device *vdev, int type,
- int nr, int warn_if_nr_in_use, struct module *owner);
- static inline int __must_check video_register_device(struct video_device *vdev,
- int type, int nr)
- {
- return __video_register_device(vdev, type, nr, 1, vdev->fops->owner);
- }
- static inline int __must_check video_register_device_no_warn(
- struct video_device *vdev, int type, int nr)
- {
- return __video_register_device(vdev, type, nr, 0, vdev->fops->owner);
- }
- void video_unregister_device(struct video_device *vdev);
- struct video_device * __must_check video_device_alloc(void);
- void video_device_release(struct video_device *vdev);
- void video_device_release_empty(struct video_device *vdev);
- bool v4l2_is_known_ioctl(unsigned int cmd);
- static inline void v4l2_disable_ioctl_locking(struct video_device *vdev,
- unsigned int cmd)
- {
- if (_IOC_NR(cmd) < BASE_VIDIOC_PRIVATE)
- set_bit(_IOC_NR(cmd), vdev->disable_locking);
- }
- static inline void v4l2_disable_ioctl(struct video_device *vdev,
- unsigned int cmd)
- {
- if (_IOC_NR(cmd) < BASE_VIDIOC_PRIVATE)
- set_bit(_IOC_NR(cmd), vdev->valid_ioctls);
- }
- static inline void *video_get_drvdata(struct video_device *vdev)
- {
- return dev_get_drvdata(&vdev->dev);
- }
- static inline void video_set_drvdata(struct video_device *vdev, void *data)
- {
- dev_set_drvdata(&vdev->dev, data);
- }
- struct video_device *video_devdata(struct file *file);
- static inline void *video_drvdata(struct file *file)
- {
- return video_get_drvdata(video_devdata(file));
- }
- static inline const char *video_device_node_name(struct video_device *vdev)
- {
- return dev_name(&vdev->dev);
- }
- static inline int video_is_registered(struct video_device *vdev)
- {
- return test_bit(V4L2_FL_REGISTERED, &vdev->flags);
- }
- #endif
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