/* * *	V 4 L 2   D R I V E R   H E L P E R   A P I * * Moved from videodev2.h * *	Some commonly needed functions for drivers (v4l2-common.o module) */#ifndef _V4L2_DEV_H#define _V4L2_DEV_H #define OBSOLETE_OWNER   1 /* to be removed soon */#define OBSOLETE_DEVDATA 1 /* to be removed soon */ #include <linux/poll.h>#include <linux/fs.h>#include <linux/device.h>#include <linux/mutex.h>#include <linux/compiler.h> /* need __user */#ifdef CONFIG_VIDEO_V4L1_COMPAT#include <linux/videodev.h>#else#include <linux/videodev2.h>#endif #include <linux/fs.h> #define VIDEO_MAJOR	81/* Minor device allocation */#define MINOR_VFL_TYPE_GRABBER_MIN   0#define MINOR_VFL_TYPE_GRABBER_MAX  63#define MINOR_VFL_TYPE_RADIO_MIN    64#define MINOR_VFL_TYPE_RADIO_MAX   127#define MINOR_VFL_TYPE_VTX_MIN     192#define MINOR_VFL_TYPE_VTX_MAX     223#define MINOR_VFL_TYPE_VBI_MIN     224#define MINOR_VFL_TYPE_VBI_MAX     255 #define VFL_TYPE_GRABBER	0#define VFL_TYPE_VBI		1#define VFL_TYPE_RADIO		2#define VFL_TYPE_VTX		3 /*  Video standard functions  */extern unsigned int v4l2_video_std_fps(struct v4l2_standard *vs);extern char *v4l2_norm_to_name(v4l2_std_id id);extern int v4l2_video_std_construct(struct v4l2_standard *vs,				    int id, char *name); /* prority handling */struct v4l2_prio_state {	atomic_t prios[4];};int 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);int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local);int 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); /* names for fancy debug output */extern char *v4l2_field_names[];extern char *v4l2_type_names[]; /*  Compatibility layer interface  --  v4l1-compat module */typedef int (*v4l2_kioctl)(struct inode *inode, struct file *file,			   unsigned int cmd, void *arg);#ifdef CONFIG_VIDEO_V4L1_COMPATint v4l_compat_translate_ioctl(struct inode *inode, struct file *file,			       int cmd, void *arg, v4l2_kioctl driver_ioctl);#else#define v4l_compat_translate_ioctl(inode,file,cmd,arg,ioctl) -EINVAL#endif /* 32 Bits compatibility layer for 64 bits processors */extern long v4l_compat_ioctl32(struct file *file, unsigned int cmd,				unsigned long arg); /* * Newer version of video_device, handled by videodev2.c * 	This version moves redundant code from video device code to *	the common handler */ struct video_device{	/* device ops */	const struct file_operations *fops; 	/* device info */	struct device *dev;	char name[32];	int type;       /* v4l1 */	int type2;      /* v4l2 */	int hardware;	int minor; 	int debug;	/* Activates debug level*/ 	/* Video standard vars */	v4l2_std_id tvnorms;		/* Supported tv norms */	v4l2_std_id current_norm;	/* Current tvnorm */ 	/* callbacks */	void (*release)(struct video_device *vfd); 	/* ioctl callbacks */ 	/* VIDIOC_QUERYCAP handler */	int (*vidioc_querycap)(struct file *file, void *fh, struct v4l2_capability *cap); 	/* Priority handling */	int (*vidioc_g_priority)   (struct file *file, void *fh,				    enum v4l2_priority *p);	int (*vidioc_s_priority)   (struct file *file, void *fh,				    enum v4l2_priority p); 	/* VIDIOC_ENUM_FMT handlers */	int (*vidioc_enum_fmt_cap)         (struct file *file, void *fh,					    struct v4l2_fmtdesc *f);	int (*vidioc_enum_fmt_overlay)     (struct file *file, void *fh,					    struct v4l2_fmtdesc *f);	int (*vidioc_enum_fmt_vbi)         (struct file *file, void *fh,					    struct v4l2_fmtdesc *f);	int (*vidioc_enum_fmt_vbi_capture) (struct file *file, void *fh,					    struct v4l2_fmtdesc *f);	int (*vidioc_enum_fmt_video_output)(struct file *file, void *fh,					    struct v4l2_fmtdesc *f);	int (*vidioc_enum_fmt_vbi_output)  (struct file *file, void *fh,					    struct v4l2_fmtdesc *f);	int (*vidioc_enum_fmt_type_private)(struct file *file, void *fh,					    struct v4l2_fmtdesc *f); 	/* VIDIOC_G_FMT handlers */	int (*vidioc_g_fmt_cap)        (struct file *file, void *fh,					struct v4l2_format *f);	int (*vidioc_g_fmt_overlay)    (struct file *file, void *fh,					struct v4l2_format *f);	int (*vidioc_g_fmt_vbi)        (struct file *file, void *fh,					struct v4l2_format *f);	int (*vidioc_g_fmt_vbi_output) (struct file *file, void *fh,					struct v4l2_format *f);	int (*vidioc_g_fmt_vbi_capture)(struct file *file, void *fh,					struct v4l2_format *f);	int (*vidioc_g_fmt_video_output)(struct file *file, void *fh,					struct v4l2_format *f);	int (*vidioc_g_fmt_type_private)(struct file *file, void *fh,					struct v4l2_format *f); 	/* VIDIOC_S_FMT handlers */	int (*vidioc_s_fmt_cap)        (struct file *file, void *fh,					struct v4l2_format *f); 	int (*vidioc_s_fmt_overlay)    (struct file *file, void *fh,					struct v4l2_format *f);	int (*vidioc_s_fmt_vbi)        (struct file *file, void *fh,					struct v4l2_format *f);	int (*vidioc_s_fmt_vbi_output) (struct file *file, void *fh,					struct v4l2_format *f);	int (*vidioc_s_fmt_vbi_capture)(struct file *file, void *fh,					struct v4l2_format *f);	int (*vidioc_s_fmt_video_output)(struct file *file, void *fh,					struct v4l2_format *f);	int (*vidioc_s_fmt_type_private)(struct file *file, void *fh,					struct v4l2_format *f); 	/* VIDIOC_TRY_FMT handlers */	int (*vidioc_try_fmt_cap)        (struct file *file, void *fh,					  struct v4l2_format *f);	int (*vidioc_try_fmt_overlay)    (struct file *file, void *fh,					  struct v4l2_format *f);	int (*vidioc_try_fmt_vbi)        (struct file *file, void *fh,					  struct v4l2_format *f);	int (*vidioc_try_fmt_vbi_output) (struct file *file, void *fh,					  struct v4l2_format *f);	int (*vidioc_try_fmt_vbi_capture)(struct file *file, void *fh,					  struct v4l2_format *f);	int (*vidioc_try_fmt_video_output)(struct file *file, void *fh,					  struct v4l2_format *f);	int (*vidioc_try_fmt_type_private)(struct file *file, void *fh,					  struct v4l2_format *f); 	/* Buffer handlers */	int (*vidioc_reqbufs) (struct file *file, void *fh, struct v4l2_requestbuffers *b);	int (*vidioc_querybuf)(struct file *file, void *fh, struct v4l2_buffer *b);	int (*vidioc_qbuf)    (struct file *file, void *fh, struct v4l2_buffer *b);	int (*vidioc_dqbuf)   (struct file *file, void *fh, struct v4l2_buffer *b);  	int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i);#ifdef CONFIG_VIDEO_V4L1_COMPAT			/* buffer type is struct vidio_mbuf * */	int (*vidiocgmbuf)  (struct file *file, void *fh, struct video_mbuf *p);#endif	int (*vidioc_g_fbuf)   (struct file *file, void *fh,				struct v4l2_framebuffer *a);	int (*vidioc_s_fbuf)   (struct file *file, void *fh,				struct v4l2_framebuffer *a); 		/* Stream on/off */	int (*vidioc_streamon) (struct file *file, void *fh, enum v4l2_buf_type i);	int (*vidioc_streamoff)(struct file *file, void *fh, enum v4l2_buf_type i); 		/* Standard handling			G_STD and ENUMSTD are handled by videodev.c		 */	int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id *norm);	int (*vidioc_querystd) (struct file *file, void *fh, v4l2_std_id *a); 		/* Input handling */	int (*vidioc_enum_input)(struct file *file, void *fh,				 struct v4l2_input *inp);	int (*vidioc_g_input)   (struct file *file, void *fh, unsigned int *i);	int (*vidioc_s_input)   (struct file *file, void *fh, unsigned int i); 		/* Output handling */	int (*vidioc_enumoutput) (struct file *file, void *fh,				  struct v4l2_output *a);	int (*vidioc_g_output)   (struct file *file, void *fh, unsigned int *i);	int (*vidioc_s_output)   (struct file *file, void *fh, unsigned int i); 		/* Control handling */	int (*vidioc_queryctrl)        (struct file *file, void *fh,					struct v4l2_queryctrl *a);	int (*vidioc_g_ctrl)           (struct file *file, void *fh,					struct v4l2_control *a);	int (*vidioc_s_ctrl)           (struct file *file, void *fh,					struct v4l2_control *a);	int (*vidioc_g_ext_ctrls)      (struct file *file, void *fh,					struct v4l2_ext_controls *a);	int (*vidioc_s_ext_ctrls)      (struct file *file, void *fh,					struct v4l2_ext_controls *a);	int (*vidioc_try_ext_ctrls)    (struct file *file, void *fh,					struct v4l2_ext_controls *a);	int (*vidioc_querymenu)        (struct file *file, void *fh,					struct v4l2_querymenu *a); 	/* Audio ioctls */	int (*vidioc_enumaudio)        (struct file *file, void *fh,					struct v4l2_audio *a);	int (*vidioc_g_audio)          (struct file *file, void *fh,					struct v4l2_audio *a);	int (*vidioc_s_audio)          (struct file *file, void *fh,					struct v4l2_audio *a); 	/* Audio out ioctls */	int (*vidioc_enumaudout)       (struct file *file, void *fh,					struct v4l2_audioout *a);	int (*vidioc_g_audout)         (struct file *file, void *fh,					struct v4l2_audioout *a);	int (*vidioc_s_audout)         (struct file *file, void *fh,					struct v4l2_audioout *a);	int (*vidioc_g_modulator)      (struct file *file, void *fh,					struct v4l2_modulator *a);	int (*vidioc_s_modulator)      (struct file *file, void *fh,					struct v4l2_modulator *a);	/* Crop ioctls */	int (*vidioc_cropcap)          (struct file *file, void *fh,					struct v4l2_cropcap *a);	int (*vidioc_g_crop)           (struct file *file, void *fh,					struct v4l2_crop *a);	int (*vidioc_s_crop)           (struct file *file, void *fh,					struct v4l2_crop *a);	/* Compression ioctls */	int (*vidioc_g_mpegcomp)       (struct file *file, void *fh,					struct v4l2_mpeg_compression *a);	int (*vidioc_s_mpegcomp)       (struct file *file, void *fh,					struct v4l2_mpeg_compression *a);	int (*vidioc_g_jpegcomp)       (struct file *file, void *fh,					struct v4l2_jpegcompression *a);	int (*vidioc_s_jpegcomp)       (struct file *file, void *fh,					struct v4l2_jpegcompression *a);	int (*vidioc_g_enc_index)      (struct file *file, void *fh,					struct v4l2_enc_idx *a);	int (*vidioc_encoder_cmd)      (struct file *file, void *fh,					struct v4l2_encoder_cmd *a);	int (*vidioc_try_encoder_cmd)  (struct file *file, void *fh,					struct v4l2_encoder_cmd *a); 	/* Stream type-dependent parameter ioctls */	int (*vidioc_g_parm)           (struct file *file, void *fh,					struct v4l2_streamparm *a);	int (*vidioc_s_parm)           (struct file *file, void *fh,					struct v4l2_streamparm *a); 	/* Tuner ioctls */	int (*vidioc_g_tuner)          (struct file *file, void *fh,					struct v4l2_tuner *a);	int (*vidioc_s_tuner)          (struct file *file, void *fh,					struct v4l2_tuner *a);	int (*vidioc_g_frequency)      (struct file *file, void *fh,					struct v4l2_frequency *a);	int (*vidioc_s_frequency)      (struct file *file, void *fh,					struct v4l2_frequency *a); 	/* Sliced VBI cap */	int (*vidioc_g_sliced_vbi_cap) (struct file *file, void *fh,					struct v4l2_sliced_vbi_cap *a); 	/* Log status ioctl */	int (*vidioc_log_status)       (struct file *file, void *fh);  	/* Debugging ioctls */#ifdef CONFIG_VIDEO_ADV_DEBUG	int (*vidioc_g_register)       (struct file *file, void *fh,					struct v4l2_register *reg);	int (*vidioc_s_register)       (struct file *file, void *fh,					struct v4l2_register *reg);#endif  #ifdef OBSOLETE_OWNER /* to be removed soon *//* obsolete -- fops->owner is used instead */struct module *owner;/* dev->driver_data will be used instead some day.	* Use the video_{get|set}_drvdata() helper functions,	* so the switch over will be transparent for you.	* Or use {pci|usb}_{get|set}_drvdata() directly. */void *priv;#endif 	/* for videodev.c intenal usage -- please don't touch */	int users;                     /* video_exclusive_{open|close} ... */	struct mutex lock;             /* ... helper function uses these   */	struct class_device class_dev; /* sysfs */}; /* Version 2 functions */extern int video_register_device(struct video_device *vfd, int type, int nr);void video_unregister_device(struct video_device *);extern int video_ioctl2(struct inode *inode, struct file *file,			  unsigned int cmd, unsigned long arg); /* helper functions to alloc / release struct video_device, the   later can be used for video_device->release() */struct video_device *video_device_alloc(void);void video_device_release(struct video_device *vfd); /* Include support for obsoleted stuff */extern int video_usercopy(struct inode *inode, struct file *file,			  unsigned int cmd, unsigned long arg,			  int (*func)(struct inode *inode, struct file *file,				      unsigned int cmd, void *arg));  #ifdef CONFIG_VIDEO_V4L1_COMPAT#include <linux/mm.h> #define to_video_device(cd) container_of(cd, struct video_device, class_dev)static inline int __must_checkvideo_device_create_file(struct video_device *vfd,			 struct class_device_attribute *attr){	int ret = class_device_create_file(&vfd->class_dev, attr);	if (ret < 0)		printk(KERN_WARNING "%s error: %d\n", __FUNCTION__, ret);	return ret;}static inline voidvideo_device_remove_file(struct video_device *vfd,			 struct class_device_attribute *attr){	class_device_remove_file(&vfd->class_dev, attr);} #endif /* CONFIG_VIDEO_V4L1_COMPAT */ #ifdef OBSOLETE_OWNER /* to be removed soon *//* helper functions to access driver private data. */static inline void *video_get_drvdata(struct video_device *dev){	return dev->priv;} static inline void video_set_drvdata(struct video_device *dev, void *data){	dev->priv = data;} #endif #ifdef OBSOLETE_DEVDATA /* to be removed soon *//* Obsolete stuff - Still needed for radio devices and obsolete drivers */extern struct video_device* video_devdata(struct file*);extern int video_exclusive_open(struct inode *inode, struct file *file);extern int video_exclusive_release(struct inode *inode, struct file *file);#endif #endif /* _V4L2_DEV_H */