/*
   *
   *	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_IOCTL_H
  #define _V4L2_IOCTL_H
  
  #include <linux/poll.h>
  #include <linux/fs.h>
  #include <linux/device.h>
  #include <linux/mutex.h>
  #include <linux/compiler.h> /* need __user */

  #include <linux/videodev2.h>

  struct v4l2_fh;

  struct v4l2_ioctl_ops {
  	/* 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_vid_cap)     (struct file *file, void *fh,
  					    struct v4l2_fmtdesc *f);
  	int (*vidioc_enum_fmt_vid_overlay) (struct file *file, void *fh,
  					    struct v4l2_fmtdesc *f);
  	int (*vidioc_enum_fmt_vid_out)     (struct file *file, void *fh,
  					    struct v4l2_fmtdesc *f);

  	int (*vidioc_enum_fmt_vid_cap_mplane)(struct file *file, void *fh,
  					      struct v4l2_fmtdesc *f);
  	int (*vidioc_enum_fmt_vid_out_mplane)(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_vid_cap)    (struct file *file, void *fh,
  					struct v4l2_format *f);
  	int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh,
  					struct v4l2_format *f);
  	int (*vidioc_g_fmt_vid_out)    (struct file *file, void *fh,
  					struct v4l2_format *f);
  	int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh,
  					struct v4l2_format *f);
  	int (*vidioc_g_fmt_vbi_cap)    (struct file *file, void *fh,
  					struct v4l2_format *f);
  	int (*vidioc_g_fmt_vbi_out)    (struct file *file, void *fh,
  					struct v4l2_format *f);
  	int (*vidioc_g_fmt_sliced_vbi_cap)(struct file *file, void *fh,
  					struct v4l2_format *f);
  	int (*vidioc_g_fmt_sliced_vbi_out)(struct file *file, void *fh,
  					struct v4l2_format *f);

  	int (*vidioc_g_fmt_vid_cap_mplane)(struct file *file, void *fh,
  					   struct v4l2_format *f);
  	int (*vidioc_g_fmt_vid_out_mplane)(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_vid_cap)    (struct file *file, void *fh,
  					struct v4l2_format *f);
  	int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh,
  					struct v4l2_format *f);
  	int (*vidioc_s_fmt_vid_out)    (struct file *file, void *fh,
  					struct v4l2_format *f);
  	int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh,
  					struct v4l2_format *f);
  	int (*vidioc_s_fmt_vbi_cap)    (struct file *file, void *fh,
  					struct v4l2_format *f);
  	int (*vidioc_s_fmt_vbi_out)    (struct file *file, void *fh,
  					struct v4l2_format *f);
  	int (*vidioc_s_fmt_sliced_vbi_cap)(struct file *file, void *fh,
  					struct v4l2_format *f);
  	int (*vidioc_s_fmt_sliced_vbi_out)(struct file *file, void *fh,
  					struct v4l2_format *f);

  	int (*vidioc_s_fmt_vid_cap_mplane)(struct file *file, void *fh,
  					   struct v4l2_format *f);
  	int (*vidioc_s_fmt_vid_out_mplane)(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_vid_cap)    (struct file *file, void *fh,
  					  struct v4l2_format *f);
  	int (*vidioc_try_fmt_vid_overlay)(struct file *file, void *fh,
  					  struct v4l2_format *f);
  	int (*vidioc_try_fmt_vid_out)    (struct file *file, void *fh,
  					  struct v4l2_format *f);
  	int (*vidioc_try_fmt_vid_out_overlay)(struct file *file, void *fh,
  					  struct v4l2_format *f);
  	int (*vidioc_try_fmt_vbi_cap)    (struct file *file, void *fh,
  					  struct v4l2_format *f);
  	int (*vidioc_try_fmt_vbi_out)    (struct file *file, void *fh,
  					  struct v4l2_format *f);
  	int (*vidioc_try_fmt_sliced_vbi_cap)(struct file *file, void *fh,
  					  struct v4l2_format *f);
  	int (*vidioc_try_fmt_sliced_vbi_out)(struct file *file, void *fh,
  					  struct v4l2_format *f);

  	int (*vidioc_try_fmt_vid_cap_mplane)(struct file *file, void *fh,
  					     struct v4l2_format *f);
  	int (*vidioc_try_fmt_vid_out_mplane)(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_create_bufs)(struct file *file, void *fh, struct v4l2_create_buffers *b);
  	int (*vidioc_prepare_buf)(struct file *file, void *fh, struct v4l2_buffer *b);

  
  	int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i);

  	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
  			ENUMSTD is handled by videodev.c
  		 */
  	int (*vidioc_g_std) (struct file *file, void *fh, v4l2_std_id *norm);
  	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_enum_output) (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);

  	int (*vidioc_g_selection)      (struct file *file, void *fh,
  					struct v4l2_selection *s);
  	int (*vidioc_s_selection)      (struct file *file, void *fh,
  					struct v4l2_selection *s);

  	/* Compression ioctls */
  	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);
  
  	int (*vidioc_s_hw_freq_seek)   (struct file *file, void *fh,
  					struct v4l2_hw_freq_seek *a);
  
  	/* Debugging ioctls */
  #ifdef CONFIG_VIDEO_ADV_DEBUG
  	int (*vidioc_g_register)       (struct file *file, void *fh,

  					struct v4l2_dbg_register *reg);

  	int (*vidioc_s_register)       (struct file *file, void *fh,

  					struct v4l2_dbg_register *reg);

  #endif
  	int (*vidioc_g_chip_ident)     (struct file *file, void *fh,

  					struct v4l2_dbg_chip_ident *chip);

  	int (*vidioc_enum_framesizes)   (struct file *file, void *fh,
  					 struct v4l2_frmsizeenum *fsize);
  
  	int (*vidioc_enum_frameintervals) (struct file *file, void *fh,
  					   struct v4l2_frmivalenum *fival);

  	/* DV Timings IOCTLs */
  	int (*vidioc_enum_dv_presets) (struct file *file, void *fh,
  				       struct v4l2_dv_enum_preset *preset);
  
  	int (*vidioc_s_dv_preset) (struct file *file, void *fh,
  				   struct v4l2_dv_preset *preset);
  	int (*vidioc_g_dv_preset) (struct file *file, void *fh,
  				   struct v4l2_dv_preset *preset);
  	int (*vidioc_query_dv_preset) (struct file *file, void *fh,
  					struct v4l2_dv_preset *qpreset);
  	int (*vidioc_s_dv_timings) (struct file *file, void *fh,
  				    struct v4l2_dv_timings *timings);
  	int (*vidioc_g_dv_timings) (struct file *file, void *fh,
  				    struct v4l2_dv_timings *timings);

  	int (*vidioc_subscribe_event)  (struct v4l2_fh *fh,
  					struct v4l2_event_subscription *sub);
  	int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh,
  					struct v4l2_event_subscription *sub);

  	/* For other private ioctls */

  	long (*vidioc_default)	       (struct file *file, void *fh,

  					bool valid_prio, int cmd, void *arg);

  };

  /* v4l debugging and diagnostics */
  
  /* Debug bitmask flags to be used on V4L2 */
  #define V4L2_DEBUG_IOCTL     0x01
  #define V4L2_DEBUG_IOCTL_ARG 0x02
  
  /* Use this macro for non-I2C drivers. Pass the driver name as the first arg. */
  #define v4l_print_ioctl(name, cmd)  		 \
  	do {  					 \
  		printk(KERN_DEBUG "%s: ", name); \
  		v4l_printk_ioctl(cmd);		 \
  	} while (0)
  
  /* Use this macro in I2C drivers where 'client' is the struct i2c_client
     pointer */
  #define v4l_i2c_print_ioctl(client, cmd) 		   \
  	do {      					   \
  		v4l_client_printk(KERN_DEBUG, client, ""); \
  		v4l_printk_ioctl(cmd);			   \
  	} while (0)

  /*  Video standard functions  */
  extern const char *v4l2_norm_to_name(v4l2_std_id id);

  extern void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod);

  extern int v4l2_video_std_construct(struct v4l2_standard *vs,
  				    int id, const char *name);
  /* Prints the ioctl in a human-readable format */
  extern void v4l_printk_ioctl(unsigned int cmd);
  
  /* names for fancy debug output */
  extern const char *v4l2_field_names[];
  extern const char *v4l2_type_names[];

  #ifdef CONFIG_COMPAT

  /* 32 Bits compatibility layer for 64 bits processors */

  extern long v4l2_compat_ioctl32(struct file *file, unsigned int cmd,

  				unsigned long arg);

  #endif

  typedef long (*v4l2_kioctl)(struct file *file,
  		unsigned int cmd, void *arg);

  /* Include support for obsoleted stuff */

  extern long video_usercopy(struct file *file, unsigned int cmd,

  				unsigned long arg, v4l2_kioctl func);

  /* Standard handlers for V4L ioctl's */

  extern long video_ioctl2(struct file *file,

  			unsigned int cmd, unsigned long arg);

  #endif /* _V4L2_IOCTL_H */