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/device.h>
  15 #include <linux/mutex.h>
  16 #include <linux/compiler.h> /* need __user */
  17 #ifdef CONFIG_VIDEO_V4L1_COMPAT
  18 #define __MIN_V4L1
  19 #include <linux/videodev.h>
  20 #else
  21 #include <linux/videodev2.h>
  22 #endif
  23
  24 struct v4l2_fh;
  25
  26 struct v4l2_ioctl_ops {
  27         /* ioctl callbacks */
  28
  29         /* VIDIOC_QUERYCAP handler */
  30         int (*vidioc_querycap)(struct file *file, void *fh, struct v4l2_capability *cap);
  31
  32         /* Priority handling */
  33         int (*vidioc_g_priority)   (struct file *file, void *fh,
  34                                     enum v4l2_priority *p);
  35         int (*vidioc_s_priority)   (struct file *file, void *fh,
  36                                     enum v4l2_priority p);
  37
  38         /* VIDIOC_ENUM_FMT handlers */
  39         int (*vidioc_enum_fmt_vid_cap)     (struct file *file, void *fh,
  40                                             struct v4l2_fmtdesc *f);
  41         int (*vidioc_enum_fmt_vid_overlay) (struct file *file, void *fh,
  42                                             struct v4l2_fmtdesc *f);
  43         int (*vidioc_enum_fmt_vid_out)     (struct file *file, void *fh,
  44                                             struct v4l2_fmtdesc *f);
  45         int (*vidioc_enum_fmt_type_private)(struct file *file, void *fh,
  46                                             struct v4l2_fmtdesc *f);
  47
  48         /* VIDIOC_G_FMT handlers */
  49         int (*vidioc_g_fmt_vid_cap)    (struct file *file, void *fh,
  50                                         struct v4l2_format *f);
  51         int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh,
  52                                         struct v4l2_format *f);
  53         int (*vidioc_g_fmt_vid_out)    (struct file *file, void *fh,
  54                                         struct v4l2_format *f);
  55         int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh,
  56                                         struct v4l2_format *f);
  57         int (*vidioc_g_fmt_vbi_cap)    (struct file *file, void *fh,
  58                                         struct v4l2_format *f);
  59         int (*vidioc_g_fmt_vbi_out)    (struct file *file, void *fh,
  60                                         struct v4l2_format *f);
  61         int (*vidioc_g_fmt_sliced_vbi_cap)(struct file *file, void *fh,
  62                                         struct v4l2_format *f);
  63         int (*vidioc_g_fmt_sliced_vbi_out)(struct file *file, void *fh,
  64                                         struct v4l2_format *f);
  65         int (*vidioc_g_fmt_type_private)(struct file *file, void *fh,
  66                                         struct v4l2_format *f);
  67
  68         /* VIDIOC_S_FMT handlers */
  69         int (*vidioc_s_fmt_vid_cap)    (struct file *file, void *fh,
  70                                         struct v4l2_format *f);
  71         int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh,
  72                                         struct v4l2_format *f);
  73         int (*vidioc_s_fmt_vid_out)    (struct file *file, void *fh,
  74                                         struct v4l2_format *f);
  75         int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh,
  76                                         struct v4l2_format *f);
  77         int (*vidioc_s_fmt_vbi_cap)    (struct file *file, void *fh,
  78                                         struct v4l2_format *f);
  79         int (*vidioc_s_fmt_vbi_out)    (struct file *file, void *fh,
  80                                         struct v4l2_format *f);
  81         int (*vidioc_s_fmt_sliced_vbi_cap)(struct file *file, void *fh,
  82                                         struct v4l2_format *f);
  83         int (*vidioc_s_fmt_sliced_vbi_out)(struct file *file, void *fh,
  84                                         struct v4l2_format *f);
  85         int (*vidioc_s_fmt_type_private)(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_type_private)(struct file *file, void *fh,
 106                                           struct v4l2_format *f);
 107
 108         /* Buffer handlers */
 109         int (*vidioc_reqbufs) (struct file *file, void *fh, struct v4l2_requestbuffers *b);
 110         int (*vidioc_querybuf)(struct file *file, void *fh, struct v4l2_buffer *b);
 111         int (*vidioc_qbuf)    (struct file *file, void *fh, struct v4l2_buffer *b);
 112         int (*vidioc_dqbuf)   (struct file *file, void *fh, struct v4l2_buffer *b);
 113
 114
 115         int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i);
 116 #ifdef CONFIG_VIDEO_V4L1_COMPAT
 117                         /* buffer type is struct vidio_mbuf * */
 118         int (*vidiocgmbuf)  (struct file *file, void *fh, struct video_mbuf *p);
 119 #endif
 120         int (*vidioc_g_fbuf)   (struct file *file, void *fh,
 121                                 struct v4l2_framebuffer *a);
 122         int (*vidioc_s_fbuf)   (struct file *file, void *fh,
 123                                 struct v4l2_framebuffer *a);
 124
 125                 /* Stream on/off */
 126         int (*vidioc_streamon) (struct file *file, void *fh, enum v4l2_buf_type i);
 127         int (*vidioc_streamoff)(struct file *file, void *fh, enum v4l2_buf_type i);
 128
 129                 /* Standard handling
 130                         ENUMSTD is handled by videodev.c
 131                  */
 132         int (*vidioc_g_std) (struct file *file, void *fh, v4l2_std_id *norm);
 133         int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id *norm);
 134         int (*vidioc_querystd) (struct file *file, void *fh, v4l2_std_id *a);
 135
 136                 /* Input handling */
 137         int (*vidioc_enum_input)(struct file *file, void *fh,
 138                                  struct v4l2_input *inp);
 139         int (*vidioc_g_input)   (struct file *file, void *fh, unsigned int *i);
 140         int (*vidioc_s_input)   (struct file *file, void *fh, unsigned int i);
 141
 142                 /* Output handling */
 143         int (*vidioc_enum_output) (struct file *file, void *fh,
 144                                   struct v4l2_output *a);
 145         int (*vidioc_g_output)   (struct file *file, void *fh, unsigned int *i);
 146         int (*vidioc_s_output)   (struct file *file, void *fh, unsigned int i);
 147
 148                 /* Control handling */
 149         int (*vidioc_queryctrl)        (struct file *file, void *fh,
 150                                         struct v4l2_queryctrl *a);
 151         int (*vidioc_g_ctrl)           (struct file *file, void *fh,
 152                                         struct v4l2_control *a);
 153         int (*vidioc_s_ctrl)           (struct file *file, void *fh,
 154                                         struct v4l2_control *a);
 155         int (*vidioc_g_ext_ctrls)      (struct file *file, void *fh,
 156                                         struct v4l2_ext_controls *a);
 157         int (*vidioc_s_ext_ctrls)      (struct file *file, void *fh,
 158                                         struct v4l2_ext_controls *a);
 159         int (*vidioc_try_ext_ctrls)    (struct file *file, void *fh,
 160                                         struct v4l2_ext_controls *a);
 161         int (*vidioc_querymenu)        (struct file *file, void *fh,
 162                                         struct v4l2_querymenu *a);
 163
 164         /* Audio ioctls */
 165         int (*vidioc_enumaudio)        (struct file *file, void *fh,
 166                                         struct v4l2_audio *a);
 167         int (*vidioc_g_audio)          (struct file *file, void *fh,
 168                                         struct v4l2_audio *a);
 169         int (*vidioc_s_audio)          (struct file *file, void *fh,
 170                                         struct v4l2_audio *a);
 171
 172         /* Audio out ioctls */
 173         int (*vidioc_enumaudout)       (struct file *file, void *fh,
 174                                         struct v4l2_audioout *a);
 175         int (*vidioc_g_audout)         (struct file *file, void *fh,
 176                                         struct v4l2_audioout *a);
 177         int (*vidioc_s_audout)         (struct file *file, void *fh,
 178                                         struct v4l2_audioout *a);
 179         int (*vidioc_g_modulator)      (struct file *file, void *fh,
 180                                         struct v4l2_modulator *a);
 181         int (*vidioc_s_modulator)      (struct file *file, void *fh,
 182                                         struct v4l2_modulator *a);
 183         /* Crop ioctls */
 184         int (*vidioc_cropcap)          (struct file *file, void *fh,
 185                                         struct v4l2_cropcap *a);
 186         int (*vidioc_g_crop)           (struct file *file, void *fh,
 187                                         struct v4l2_crop *a);
 188         int (*vidioc_s_crop)           (struct file *file, void *fh,
 189                                         struct v4l2_crop *a);
 190         /* Compression ioctls */
 191         int (*vidioc_g_jpegcomp)       (struct file *file, void *fh,
 192                                         struct v4l2_jpegcompression *a);
 193         int (*vidioc_s_jpegcomp)       (struct file *file, void *fh,
 194                                         struct v4l2_jpegcompression *a);
 195         int (*vidioc_g_enc_index)      (struct file *file, void *fh,
 196                                         struct v4l2_enc_idx *a);
 197         int (*vidioc_encoder_cmd)      (struct file *file, void *fh,
 198                                         struct v4l2_encoder_cmd *a);
 199         int (*vidioc_try_encoder_cmd)  (struct file *file, void *fh,
 200                                         struct v4l2_encoder_cmd *a);
 201
 202         /* Stream type-dependent parameter ioctls */
 203         int (*vidioc_g_parm)           (struct file *file, void *fh,
 204                                         struct v4l2_streamparm *a);
 205         int (*vidioc_s_parm)           (struct file *file, void *fh,
 206                                         struct v4l2_streamparm *a);
 207
 208         /* Tuner ioctls */
 209         int (*vidioc_g_tuner)          (struct file *file, void *fh,
 210                                         struct v4l2_tuner *a);
 211         int (*vidioc_s_tuner)          (struct file *file, void *fh,
 212                                         struct v4l2_tuner *a);
 213         int (*vidioc_g_frequency)      (struct file *file, void *fh,
 214                                         struct v4l2_frequency *a);
 215         int (*vidioc_s_frequency)      (struct file *file, void *fh,
 216                                         struct v4l2_frequency *a);
 217
 218         /* Sliced VBI cap */
 219         int (*vidioc_g_sliced_vbi_cap) (struct file *file, void *fh,
 220                                         struct v4l2_sliced_vbi_cap *a);
 221
 222         /* Log status ioctl */
 223         int (*vidioc_log_status)       (struct file *file, void *fh);
 224
 225         int (*vidioc_s_hw_freq_seek)   (struct file *file, void *fh,
 226                                         struct v4l2_hw_freq_seek *a);
 227
 228         /* Debugging ioctls */
 229 #ifdef CONFIG_VIDEO_ADV_DEBUG
 230         int (*vidioc_g_register)       (struct file *file, void *fh,
 231                                         struct v4l2_dbg_register *reg);
 232         int (*vidioc_s_register)       (struct file *file, void *fh,
 233                                         struct v4l2_dbg_register *reg);
 234 #endif
 235         int (*vidioc_g_chip_ident)     (struct file *file, void *fh,
 236                                         struct v4l2_dbg_chip_ident *chip);
 237
 238         int (*vidioc_enum_framesizes)   (struct file *file, void *fh,
 239                                          struct v4l2_frmsizeenum *fsize);
 240
 241         int (*vidioc_enum_frameintervals) (struct file *file, void *fh,
 242                                            struct v4l2_frmivalenum *fival);
 243
 244         /* DV Timings IOCTLs */
 245         int (*vidioc_enum_dv_presets) (struct file *file, void *fh,
 246                                        struct v4l2_dv_enum_preset *preset);
 247
 248         int (*vidioc_s_dv_preset) (struct file *file, void *fh,
 249                                    struct v4l2_dv_preset *preset);
 250         int (*vidioc_g_dv_preset) (struct file *file, void *fh,
 251                                    struct v4l2_dv_preset *preset);
 252         int (*vidioc_query_dv_preset) (struct file *file, void *fh,
 253                                         struct v4l2_dv_preset *qpreset);
 254         int (*vidioc_s_dv_timings) (struct file *file, void *fh,
 255                                     struct v4l2_dv_timings *timings);
 256         int (*vidioc_g_dv_timings) (struct file *file, void *fh,
 257                                     struct v4l2_dv_timings *timings);
 258
 259         int (*vidioc_subscribe_event)  (struct v4l2_fh *fh,
 260                                         struct v4l2_event_subscription *sub);
 261         int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh,
 262                                         struct v4l2_event_subscription *sub);
 263
 264         /* For other private ioctls */
 265         long (*vidioc_default)         (struct file *file, void *fh,
 266                                         int cmd, void *arg);
 267 };
 268
 269
 270 /* v4l debugging and diagnostics */
 271
 272 /* Debug bitmask flags to be used on V4L2 */
 273 #define V4L2_DEBUG_IOCTL     0x01
 274 #define V4L2_DEBUG_IOCTL_ARG 0x02
 275
 276 /* Use this macro for non-I2C drivers. Pass the driver name as the first arg. */
 277 #define v4l_print_ioctl(name, cmd)               \
 278         do {                                     \
 279                 printk(KERN_DEBUG "%s: ", name); \
 280                 v4l_printk_ioctl(cmd);           \
 281         } while (0)
 282
 283 /* Use this macro in I2C drivers where 'client' is the struct i2c_client
 284    pointer */
 285 #define v4l_i2c_print_ioctl(client, cmd)                   \
 286         do {                                               \
 287                 v4l_client_printk(KERN_DEBUG, client, ""); \
 288                 v4l_printk_ioctl(cmd);                     \
 289         } while (0)
 290
 291 /*  Video standard functions  */
 292 extern const char *v4l2_norm_to_name(v4l2_std_id id);
 293 extern void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod);
 294 extern int v4l2_video_std_construct(struct v4l2_standard *vs,
 295                                     int id, const char *name);
 296 /* Prints the ioctl in a human-readable format */
 297 extern void v4l_printk_ioctl(unsigned int cmd);
 298
 299 /* names for fancy debug output */
 300 extern const char *v4l2_field_names[];
 301 extern const char *v4l2_type_names[];
 302
 303 /*  Compatibility layer interface  --  v4l1-compat module */
 304 typedef long (*v4l2_kioctl)(struct file *file,
 305                            unsigned int cmd, void *arg);
 306 #ifdef CONFIG_VIDEO_V4L1_COMPAT
 307 long v4l_compat_translate_ioctl(struct file *file,
 308                                int cmd, void *arg, v4l2_kioctl driver_ioctl);
 309 #else
 310 #define v4l_compat_translate_ioctl(file, cmd, arg, ioctl) (-EINVAL)
 311 #endif
 312
 313 #ifdef CONFIG_COMPAT
 314 /* 32 Bits compatibility layer for 64 bits processors */
 315 extern long v4l2_compat_ioctl32(struct file *file, unsigned int cmd,
 316                                 unsigned long arg);
 317 #endif
 318
 319 /* Include support for obsoleted stuff */
 320 extern long video_usercopy(struct file *file, unsigned int cmd,
 321                                 unsigned long arg, v4l2_kioctl func);
 322
 323 /* Standard handlers for V4L ioctl's */
 324 extern long video_ioctl2(struct file *file,
 325                         unsigned int cmd, unsigned long arg);
 326
 327 #endif /* _V4L2_IOCTL_H */