include/media/v4l2-ioctl.h

   1 /*
   2  *
   3  *      V 4 L 2   D R I V E R   H E L P E R   A P I
   4  *
   5  * Moved from videodev2.h
   6  *
   7  *      Some commonly needed functions for drivers (v4l2-common.o module)
   8  */
   9 #ifndef _V4L2_IOCTL_H
  10 #define _V4L2_IOCTL_H
  11
  12 #include <linux/poll.h>
  13 #include <linux/fs.h>
  14 #include <linux/mutex.h>
  15 #include <linux/compiler.h> /* need __user */
  16 #include <linux/videodev2.h>
  17
  18 struct v4l2_fh;
  19
  20 struct v4l2_ioctl_ops {
  21         /* ioctl callbacks */
  22
  23         /* VIDIOC_QUERYCAP handler */
  24         int (*vidioc_querycap)(struct file *file, void *fh, struct v4l2_capability *cap);
  25
  26         /* Priority handling */
  27         int (*vidioc_g_priority)   (struct file *file, void *fh,
  28                                     enum v4l2_priority *p);
  29         int (*vidioc_s_priority)   (struct file *file, void *fh,
  30                                     enum v4l2_priority p);
  31
  32         /* VIDIOC_ENUM_FMT handlers */
  33         int (*vidioc_enum_fmt_vid_cap)     (struct file *file, void *fh,
  34                                             struct v4l2_fmtdesc *f);
  35         int (*vidioc_enum_fmt_vid_overlay) (struct file *file, void *fh,
  36                                             struct v4l2_fmtdesc *f);
  37         int (*vidioc_enum_fmt_vid_out)     (struct file *file, void *fh,
  38                                             struct v4l2_fmtdesc *f);
  39         int (*vidioc_enum_fmt_vid_cap_mplane)(struct file *file, void *fh,
  40                                               struct v4l2_fmtdesc *f);
  41         int (*vidioc_enum_fmt_vid_out_mplane)(struct file *file, void *fh,
  42                                               struct v4l2_fmtdesc *f);
  43
  44         /* VIDIOC_G_FMT handlers */
  45         int (*vidioc_g_fmt_vid_cap)    (struct file *file, void *fh,
  46                                         struct v4l2_format *f);
  47         int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh,
  48                                         struct v4l2_format *f);
  49         int (*vidioc_g_fmt_vid_out)    (struct file *file, void *fh,
  50                                         struct v4l2_format *f);
  51         int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh,
  52                                         struct v4l2_format *f);
  53         int (*vidioc_g_fmt_vbi_cap)    (struct file *file, void *fh,
  54                                         struct v4l2_format *f);
  55         int (*vidioc_g_fmt_vbi_out)    (struct file *file, void *fh,
  56                                         struct v4l2_format *f);
  57         int (*vidioc_g_fmt_sliced_vbi_cap)(struct file *file, void *fh,
  58                                         struct v4l2_format *f);
  59         int (*vidioc_g_fmt_sliced_vbi_out)(struct file *file, void *fh,
  60                                         struct v4l2_format *f);
  61         int (*vidioc_g_fmt_vid_cap_mplane)(struct file *file, void *fh,
  62                                            struct v4l2_format *f);
  63         int (*vidioc_g_fmt_vid_out_mplane)(struct file *file, void *fh,
  64                                            struct v4l2_format *f);
  65
  66         /* VIDIOC_S_FMT handlers */
  67         int (*vidioc_s_fmt_vid_cap)    (struct file *file, void *fh,
  68                                         struct v4l2_format *f);
  69         int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh,
  70                                         struct v4l2_format *f);
  71         int (*vidioc_s_fmt_vid_out)    (struct file *file, void *fh,
  72                                         struct v4l2_format *f);
  73         int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh,
  74                                         struct v4l2_format *f);
  75         int (*vidioc_s_fmt_vbi_cap)    (struct file *file, void *fh,
  76                                         struct v4l2_format *f);
  77         int (*vidioc_s_fmt_vbi_out)    (struct file *file, void *fh,
  78                                         struct v4l2_format *f);
  79         int (*vidioc_s_fmt_sliced_vbi_cap)(struct file *file, void *fh,
  80                                         struct v4l2_format *f);
  81         int (*vidioc_s_fmt_sliced_vbi_out)(struct file *file, void *fh,
  82                                         struct v4l2_format *f);
  83         int (*vidioc_s_fmt_vid_cap_mplane)(struct file *file, void *fh,
  84                                            struct v4l2_format *f);
  85         int (*vidioc_s_fmt_vid_out_mplane)(struct file *file, void *fh,
  86                                            struct v4l2_format *f);
  87
  88         /* VIDIOC_TRY_FMT handlers */
  89         int (*vidioc_try_fmt_vid_cap)    (struct file *file, void *fh,
  90                                           struct v4l2_format *f);
  91         int (*vidioc_try_fmt_vid_overlay)(struct file *file, void *fh,
  92                                           struct v4l2_format *f);
  93         int (*vidioc_try_fmt_vid_out)    (struct file *file, void *fh,
  94                                           struct v4l2_format *f);
  95         int (*vidioc_try_fmt_vid_out_overlay)(struct file *file, void *fh,
  96                                           struct v4l2_format *f);
  97         int (*vidioc_try_fmt_vbi_cap)    (struct file *file, void *fh,
  98                                           struct v4l2_format *f);
  99         int (*vidioc_try_fmt_vbi_out)    (struct file *file, void *fh,
 100                                           struct v4l2_format *f);
 101         int (*vidioc_try_fmt_sliced_vbi_cap)(struct file *file, void *fh,
 102                                           struct v4l2_format *f);
 103         int (*vidioc_try_fmt_sliced_vbi_out)(struct file *file, void *fh,
 104                                           struct v4l2_format *f);
 105         int (*vidioc_try_fmt_vid_cap_mplane)(struct file *file, void *fh,
 106                                              struct v4l2_format *f);
 107         int (*vidioc_try_fmt_vid_out_mplane)(struct file *file, void *fh,
 108                                              struct v4l2_format *f);
 109
 110         /* Buffer handlers */
 111         int (*vidioc_reqbufs) (struct file *file, void *fh, struct v4l2_requestbuffers *b);
 112         int (*vidioc_querybuf)(struct file *file, void *fh, struct v4l2_buffer *b);
 113         int (*vidioc_qbuf)    (struct file *file, void *fh, struct v4l2_buffer *b);
 114         int (*vidioc_expbuf)  (struct file *file, void *fh,
 115                                 struct v4l2_exportbuffer *e);
 116         int (*vidioc_dqbuf)   (struct file *file, void *fh, struct v4l2_buffer *b);
 117
 118         int (*vidioc_create_bufs)(struct file *file, void *fh, struct v4l2_create_buffers *b);
 119         int (*vidioc_prepare_buf)(struct file *file, void *fh, struct v4l2_buffer *b);
 120
 121         int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i);
 122         int (*vidioc_g_fbuf)   (struct file *file, void *fh,
 123                                 struct v4l2_framebuffer *a);
 124         int (*vidioc_s_fbuf)   (struct file *file, void *fh,
 125                                 const struct v4l2_framebuffer *a);
 126
 127                 /* Stream on/off */
 128         int (*vidioc_streamon) (struct file *file, void *fh, enum v4l2_buf_type i);
 129         int (*vidioc_streamoff)(struct file *file, void *fh, enum v4l2_buf_type i);
 130
 131                 /* Standard handling
 132                         ENUMSTD is handled by videodev.c
 133                  */
 134         int (*vidioc_g_std) (struct file *file, void *fh, v4l2_std_id *norm);
 135         int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id norm);
 136         int (*vidioc_querystd) (struct file *file, void *fh, v4l2_std_id *a);
 137
 138                 /* Input handling */
 139         int (*vidioc_enum_input)(struct file *file, void *fh,
 140                                  struct v4l2_input *inp);
 141         int (*vidioc_g_input)   (struct file *file, void *fh, unsigned int *i);
 142         int (*vidioc_s_input)   (struct file *file, void *fh, unsigned int i);
 143
 144                 /* Output handling */
 145         int (*vidioc_enum_output) (struct file *file, void *fh,
 146                                   struct v4l2_output *a);
 147         int (*vidioc_g_output)   (struct file *file, void *fh, unsigned int *i);
 148         int (*vidioc_s_output)   (struct file *file, void *fh, unsigned int i);
 149
 150                 /* Control handling */
 151         int (*vidioc_queryctrl)        (struct file *file, void *fh,
 152                                         struct v4l2_queryctrl *a);
 153         int (*vidioc_g_ctrl)           (struct file *file, void *fh,
 154                                         struct v4l2_control *a);
 155         int (*vidioc_s_ctrl)           (struct file *file, void *fh,
 156                                         struct v4l2_control *a);
 157         int (*vidioc_g_ext_ctrls)      (struct file *file, void *fh,
 158                                         struct v4l2_ext_controls *a);
 159         int (*vidioc_s_ext_ctrls)      (struct file *file, void *fh,
 160                                         struct v4l2_ext_controls *a);
 161         int (*vidioc_try_ext_ctrls)    (struct file *file, void *fh,
 162                                         struct v4l2_ext_controls *a);
 163         int (*vidioc_querymenu)        (struct file *file, void *fh,
 164                                         struct v4l2_querymenu *a);
 165
 166         /* Audio ioctls */
 167         int (*vidioc_enumaudio)        (struct file *file, void *fh,
 168                                         struct v4l2_audio *a);
 169         int (*vidioc_g_audio)          (struct file *file, void *fh,
 170                                         struct v4l2_audio *a);
 171         int (*vidioc_s_audio)          (struct file *file, void *fh,
 172                                         const struct v4l2_audio *a);
 173
 174         /* Audio out ioctls */
 175         int (*vidioc_enumaudout)       (struct file *file, void *fh,
 176                                         struct v4l2_audioout *a);
 177         int (*vidioc_g_audout)         (struct file *file, void *fh,
 178                                         struct v4l2_audioout *a);
 179         int (*vidioc_s_audout)         (struct file *file, void *fh,
 180                                         const struct v4l2_audioout *a);
 181         int (*vidioc_g_modulator)      (struct file *file, void *fh,
 182                                         struct v4l2_modulator *a);
 183         int (*vidioc_s_modulator)      (struct file *file, void *fh,
 184                                         const struct v4l2_modulator *a);
 185         /* Crop ioctls */
 186         int (*vidioc_cropcap)          (struct file *file, void *fh,
 187                                         struct v4l2_cropcap *a);
 188         int (*vidioc_g_crop)           (struct file *file, void *fh,
 189                                         struct v4l2_crop *a);
 190         int (*vidioc_s_crop)           (struct file *file, void *fh,
 191                                         const struct v4l2_crop *a);
 192         int (*vidioc_g_selection)      (struct file *file, void *fh,
 193                                         struct v4l2_selection *s);
 194         int (*vidioc_s_selection)      (struct file *file, void *fh,
 195                                         struct v4l2_selection *s);
 196         /* Compression ioctls */
 197         int (*vidioc_g_jpegcomp)       (struct file *file, void *fh,
 198                                         struct v4l2_jpegcompression *a);
 199         int (*vidioc_s_jpegcomp)       (struct file *file, void *fh,
 200                                         const struct v4l2_jpegcompression *a);
 201         int (*vidioc_g_enc_index)      (struct file *file, void *fh,
 202                                         struct v4l2_enc_idx *a);
 203         int (*vidioc_encoder_cmd)      (struct file *file, void *fh,
 204                                         struct v4l2_encoder_cmd *a);
 205         int (*vidioc_try_encoder_cmd)  (struct file *file, void *fh,
 206                                         struct v4l2_encoder_cmd *a);
 207         int (*vidioc_decoder_cmd)      (struct file *file, void *fh,
 208                                         struct v4l2_decoder_cmd *a);
 209         int (*vidioc_try_decoder_cmd)  (struct file *file, void *fh,
 210                                         struct v4l2_decoder_cmd *a);
 211
 212         /* Stream type-dependent parameter ioctls */
 213         int (*vidioc_g_parm)           (struct file *file, void *fh,
 214                                         struct v4l2_streamparm *a);
 215         int (*vidioc_s_parm)           (struct file *file, void *fh,
 216                                         struct v4l2_streamparm *a);
 217
 218         /* Tuner ioctls */
 219         int (*vidioc_g_tuner)          (struct file *file, void *fh,
 220                                         struct v4l2_tuner *a);
 221         int (*vidioc_s_tuner)          (struct file *file, void *fh,
 222                                         const struct v4l2_tuner *a);
 223         int (*vidioc_g_frequency)      (struct file *file, void *fh,
 224                                         struct v4l2_frequency *a);
 225         int (*vidioc_s_frequency)      (struct file *file, void *fh,
 226                                         const struct v4l2_frequency *a);
 227         int (*vidioc_enum_freq_bands) (struct file *file, void *fh,
 228                                     struct v4l2_frequency_band *band);
 229
 230         /* Sliced VBI cap */
 231         int (*vidioc_g_sliced_vbi_cap) (struct file *file, void *fh,
 232                                         struct v4l2_sliced_vbi_cap *a);
 233
 234         /* Log status ioctl */
 235         int (*vidioc_log_status)       (struct file *file, void *fh);
 236
 237         int (*vidioc_s_hw_freq_seek)   (struct file *file, void *fh,
 238                                         const struct v4l2_hw_freq_seek *a);
 239
 240         /* Debugging ioctls */
 241 #ifdef CONFIG_VIDEO_ADV_DEBUG
 242         int (*vidioc_g_register)       (struct file *file, void *fh,
 243                                         struct v4l2_dbg_register *reg);
 244         int (*vidioc_s_register)       (struct file *file, void *fh,
 245                                         const struct v4l2_dbg_register *reg);
 246
 247         int (*vidioc_g_chip_info)      (struct file *file, void *fh,
 248                                         struct v4l2_dbg_chip_info *chip);
 249 #endif
 250
 251         int (*vidioc_enum_framesizes)   (struct file *file, void *fh,
 252                                          struct v4l2_frmsizeenum *fsize);
 253
 254         int (*vidioc_enum_frameintervals) (struct file *file, void *fh,
 255                                            struct v4l2_frmivalenum *fival);
 256
 257         /* DV Timings IOCTLs */
 258         int (*vidioc_s_dv_timings) (struct file *file, void *fh,
 259                                     struct v4l2_dv_timings *timings);
 260         int (*vidioc_g_dv_timings) (struct file *file, void *fh,
 261                                     struct v4l2_dv_timings *timings);
 262         int (*vidioc_query_dv_timings) (struct file *file, void *fh,
 263                                     struct v4l2_dv_timings *timings);
 264         int (*vidioc_enum_dv_timings) (struct file *file, void *fh,
 265                                     struct v4l2_enum_dv_timings *timings);
 266         int (*vidioc_dv_timings_cap) (struct file *file, void *fh,
 267                                     struct v4l2_dv_timings_cap *cap);
 268
 269         int (*vidioc_subscribe_event)  (struct v4l2_fh *fh,
 270                                         const struct v4l2_event_subscription *sub);
 271         int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh,
 272                                         const struct v4l2_event_subscription *sub);
 273
 274         /* For other private ioctls */
 275         long (*vidioc_default)         (struct file *file, void *fh,
 276                                         bool valid_prio, unsigned int cmd, void *arg);
 277 };
 278
 279
 280 /* v4l debugging and diagnostics */
 281
 282 /* Debug bitmask flags to be used on V4L2 */
 283 #define V4L2_DEBUG_IOCTL     0x01
 284 #define V4L2_DEBUG_IOCTL_ARG 0x02
 285
 286 /*  Video standard functions  */
 287 extern const char *v4l2_norm_to_name(v4l2_std_id id);
 288 extern void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod);
 289 extern int v4l2_video_std_construct(struct v4l2_standard *vs,
 290                                     int id, const char *name);
 291 /* Prints the ioctl in a human-readable format. If prefix != NULL,
 292    then do printk(KERN_DEBUG "%s: ", prefix) first. */
 293 extern void v4l_printk_ioctl(const char *prefix, unsigned int cmd);
 294
 295 /* Internal use only: get the mutex (if any) that we need to lock for the
 296    given command. */
 297 struct video_device;
 298 extern struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd);
 299
 300 /* names for fancy debug output */
 301 extern const char *v4l2_field_names[];
 302 extern const char *v4l2_type_names[];
 303
 304 #ifdef CONFIG_COMPAT
 305 /* 32 Bits compatibility layer for 64 bits processors */
 306 extern long v4l2_compat_ioctl32(struct file *file, unsigned int cmd,
 307                                 unsigned long arg);
 308 #endif
 309
 310 typedef long (*v4l2_kioctl)(struct file *file,
 311                 unsigned int cmd, void *arg);
 312
 313 /* Include support for obsoleted stuff */
 314 extern long video_usercopy(struct file *file, unsigned int cmd,
 315                                 unsigned long arg, v4l2_kioctl func);
 316
 317 /* Standard handlers for V4L ioctl's */
 318 extern long video_ioctl2(struct file *file,
 319                         unsigned int cmd, unsigned long arg);
 320
 321 #endif /* _V4L2_IOCTL_H */