LXR linux/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#include <linux/videodev2.h>
  18
  19struct v4l2_fh;
  20
  21struct v4l2_ioctl_ops {
  22        /* ioctl callbacks */
  23
  24        /* VIDIOC_QUERYCAP handler */
  25        int (*vidioc_querycap)(struct file *file, void *fh, struct v4l2_capability *cap);
  26
  27        /* Priority handling */
  28        int (*vidioc_g_priority)   (struct file *file, void *fh,
  29                                    enum v4l2_priority *p);
  30        int (*vidioc_s_priority)   (struct file *file, void *fh,
  31                                    enum v4l2_priority p);
  32
  33        /* VIDIOC_ENUM_FMT handlers */
  34        int (*vidioc_enum_fmt_vid_cap)     (struct file *file, void *fh,
  35                                            struct v4l2_fmtdesc *f);
  36        int (*vidioc_enum_fmt_vid_overlay) (struct file *file, void *fh,
  37                                            struct v4l2_fmtdesc *f);
  38        int (*vidioc_enum_fmt_vid_out)     (struct file *file, void *fh,
  39                                            struct v4l2_fmtdesc *f);
  40        int (*vidioc_enum_fmt_vid_cap_mplane)(struct file *file, void *fh,
  41                                              struct v4l2_fmtdesc *f);
  42        int (*vidioc_enum_fmt_vid_out_mplane)(struct file *file, void *fh,
  43                                              struct v4l2_fmtdesc *f);
  44        int (*vidioc_enum_fmt_type_private)(struct file *file, void *fh,
  45                                            struct v4l2_fmtdesc *f);
  46
  47        /* VIDIOC_G_FMT handlers */
  48        int (*vidioc_g_fmt_vid_cap)    (struct file *file, void *fh,
  49                                        struct v4l2_format *f);
  50        int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh,
  51                                        struct v4l2_format *f);
  52        int (*vidioc_g_fmt_vid_out)    (struct file *file, void *fh,
  53                                        struct v4l2_format *f);
  54        int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh,
  55                                        struct v4l2_format *f);
  56        int (*vidioc_g_fmt_vbi_cap)    (struct file *file, void *fh,
  57                                        struct v4l2_format *f);
  58        int (*vidioc_g_fmt_vbi_out)    (struct file *file, void *fh,
  59                                        struct v4l2_format *f);
  60        int (*vidioc_g_fmt_sliced_vbi_cap)(struct file *file, void *fh,
  61                                        struct v4l2_format *f);
  62        int (*vidioc_g_fmt_sliced_vbi_out)(struct file *file, void *fh,
  63                                        struct v4l2_format *f);
  64        int (*vidioc_g_fmt_vid_cap_mplane)(struct file *file, void *fh,
  65                                           struct v4l2_format *f);
  66        int (*vidioc_g_fmt_vid_out_mplane)(struct file *file, void *fh,
  67                                           struct v4l2_format *f);
  68        int (*vidioc_g_fmt_type_private)(struct file *file, void *fh,
  69                                        struct v4l2_format *f);
  70
  71        /* VIDIOC_S_FMT handlers */
  72        int (*vidioc_s_fmt_vid_cap)    (struct file *file, void *fh,
  73                                        struct v4l2_format *f);
  74        int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh,
  75                                        struct v4l2_format *f);
  76        int (*vidioc_s_fmt_vid_out)    (struct file *file, void *fh,
  77                                        struct v4l2_format *f);
  78        int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh,
  79                                        struct v4l2_format *f);
  80        int (*vidioc_s_fmt_vbi_cap)    (struct file *file, void *fh,
  81                                        struct v4l2_format *f);
  82        int (*vidioc_s_fmt_vbi_out)    (struct file *file, void *fh,
  83                                        struct v4l2_format *f);
  84        int (*vidioc_s_fmt_sliced_vbi_cap)(struct file *file, void *fh,
  85                                        struct v4l2_format *f);
  86        int (*vidioc_s_fmt_sliced_vbi_out)(struct file *file, void *fh,
  87                                        struct v4l2_format *f);
  88        int (*vidioc_s_fmt_vid_cap_mplane)(struct file *file, void *fh,
  89                                           struct v4l2_format *f);
  90        int (*vidioc_s_fmt_vid_out_mplane)(struct file *file, void *fh,
  91                                           struct v4l2_format *f);
  92        int (*vidioc_s_fmt_type_private)(struct file *file, void *fh,
  93                                        struct v4l2_format *f);
  94
  95        /* VIDIOC_TRY_FMT handlers */
  96        int (*vidioc_try_fmt_vid_cap)    (struct file *file, void *fh,
  97                                          struct v4l2_format *f);
  98        int (*vidioc_try_fmt_vid_overlay)(struct file *file, void *fh,
  99                                          struct v4l2_format *f);
 100        int (*vidioc_try_fmt_vid_out)    (struct file *file, void *fh,
 101                                          struct v4l2_format *f);
 102        int (*vidioc_try_fmt_vid_out_overlay)(struct file *file, void *fh,
 103                                          struct v4l2_format *f);
 104        int (*vidioc_try_fmt_vbi_cap)    (struct file *file, void *fh,
 105                                          struct v4l2_format *f);
 106        int (*vidioc_try_fmt_vbi_out)    (struct file *file, void *fh,
 107                                          struct v4l2_format *f);
 108        int (*vidioc_try_fmt_sliced_vbi_cap)(struct file *file, void *fh,
 109                                          struct v4l2_format *f);
 110        int (*vidioc_try_fmt_sliced_vbi_out)(struct file *file, void *fh,
 111                                          struct v4l2_format *f);
 112        int (*vidioc_try_fmt_vid_cap_mplane)(struct file *file, void *fh,
 113                                             struct v4l2_format *f);
 114        int (*vidioc_try_fmt_vid_out_mplane)(struct file *file, void *fh,
 115                                             struct v4l2_format *f);
 116        int (*vidioc_try_fmt_type_private)(struct file *file, void *fh,
 117                                          struct v4l2_format *f);
 118
 119        /* Buffer handlers */
 120        int (*vidioc_reqbufs) (struct file *file, void *fh, struct v4l2_requestbuffers *b);
 121        int (*vidioc_querybuf)(struct file *file, void *fh, struct v4l2_buffer *b);
 122        int (*vidioc_qbuf)    (struct file *file, void *fh, struct v4l2_buffer *b);
 123        int (*vidioc_dqbuf)   (struct file *file, void *fh, struct v4l2_buffer *b);
 124
 125        int (*vidioc_create_bufs)(struct file *file, void *fh, struct v4l2_create_buffers *b);
 126        int (*vidioc_prepare_buf)(struct file *file, void *fh, struct v4l2_buffer *b);
 127
 128        int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i);
 129        int (*vidioc_g_fbuf)   (struct file *file, void *fh,
 130                                struct v4l2_framebuffer *a);
 131        int (*vidioc_s_fbuf)   (struct file *file, void *fh,
 132                                struct v4l2_framebuffer *a);
 133
 134                /* Stream on/off */
 135        int (*vidioc_streamon) (struct file *file, void *fh, enum v4l2_buf_type i);
 136        int (*vidioc_streamoff)(struct file *file, void *fh, enum v4l2_buf_type i);
 137
 138                /* Standard handling
 139                        ENUMSTD is handled by videodev.c
 140                 */
 141        int (*vidioc_g_std) (struct file *file, void *fh, v4l2_std_id *norm);
 142        int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id *norm);
 143        int (*vidioc_querystd) (struct file *file, void *fh, v4l2_std_id *a);
 144
 145                /* Input handling */
 146        int (*vidioc_enum_input)(struct file *file, void *fh,
 147                                 struct v4l2_input *inp);
 148        int (*vidioc_g_input)   (struct file *file, void *fh, unsigned int *i);
 149        int (*vidioc_s_input)   (struct file *file, void *fh, unsigned int i);
 150
 151                /* Output handling */
 152        int (*vidioc_enum_output) (struct file *file, void *fh,
 153                                  struct v4l2_output *a);
 154        int (*vidioc_g_output)   (struct file *file, void *fh, unsigned int *i);
 155        int (*vidioc_s_output)   (struct file *file, void *fh, unsigned int i);
 156
 157                /* Control handling */
 158        int (*vidioc_queryctrl)        (struct file *file, void *fh,
 159                                        struct v4l2_queryctrl *a);
 160        int (*vidioc_g_ctrl)           (struct file *file, void *fh,
 161                                        struct v4l2_control *a);
 162        int (*vidioc_s_ctrl)           (struct file *file, void *fh,
 163                                        struct v4l2_control *a);
 164        int (*vidioc_g_ext_ctrls)      (struct file *file, void *fh,
 165                                        struct v4l2_ext_controls *a);
 166        int (*vidioc_s_ext_ctrls)      (struct file *file, void *fh,
 167                                        struct v4l2_ext_controls *a);
 168        int (*vidioc_try_ext_ctrls)    (struct file *file, void *fh,
 169                                        struct v4l2_ext_controls *a);
 170        int (*vidioc_querymenu)        (struct file *file, void *fh,
 171                                        struct v4l2_querymenu *a);
 172
 173        /* Audio ioctls */
 174        int (*vidioc_enumaudio)        (struct file *file, void *fh,
 175                                        struct v4l2_audio *a);
 176        int (*vidioc_g_audio)          (struct file *file, void *fh,
 177                                        struct v4l2_audio *a);
 178        int (*vidioc_s_audio)          (struct file *file, void *fh,
 179                                        struct v4l2_audio *a);
 180
 181        /* Audio out ioctls */
 182        int (*vidioc_enumaudout)       (struct file *file, void *fh,
 183                                        struct v4l2_audioout *a);
 184        int (*vidioc_g_audout)         (struct file *file, void *fh,
 185                                        struct v4l2_audioout *a);
 186        int (*vidioc_s_audout)         (struct file *file, void *fh,
 187                                        struct v4l2_audioout *a);
 188        int (*vidioc_g_modulator)      (struct file *file, void *fh,
 189                                        struct v4l2_modulator *a);
 190        int (*vidioc_s_modulator)      (struct file *file, void *fh,
 191                                        struct v4l2_modulator *a);
 192        /* Crop ioctls */
 193        int (*vidioc_cropcap)          (struct file *file, void *fh,
 194                                        struct v4l2_cropcap *a);
 195        int (*vidioc_g_crop)           (struct file *file, void *fh,
 196                                        struct v4l2_crop *a);
 197        int (*vidioc_s_crop)           (struct file *file, void *fh,
 198                                        struct v4l2_crop *a);
 199        int (*vidioc_g_selection)      (struct file *file, void *fh,
 200                                        struct v4l2_selection *s);
 201        int (*vidioc_s_selection)      (struct file *file, void *fh,
 202                                        struct v4l2_selection *s);
 203        /* Compression ioctls */
 204        int (*vidioc_g_jpegcomp)       (struct file *file, void *fh,
 205                                        struct v4l2_jpegcompression *a);
 206        int (*vidioc_s_jpegcomp)       (struct file *file, void *fh,
 207                                        struct v4l2_jpegcompression *a);
 208        int (*vidioc_g_enc_index)      (struct file *file, void *fh,
 209                                        struct v4l2_enc_idx *a);
 210        int (*vidioc_encoder_cmd)      (struct file *file, void *fh,
 211                                        struct v4l2_encoder_cmd *a);
 212        int (*vidioc_try_encoder_cmd)  (struct file *file, void *fh,
 213                                        struct v4l2_encoder_cmd *a);
 214
 215        /* Stream type-dependent parameter ioctls */
 216        int (*vidioc_g_parm)           (struct file *file, void *fh,
 217                                        struct v4l2_streamparm *a);
 218        int (*vidioc_s_parm)           (struct file *file, void *fh,
 219                                        struct v4l2_streamparm *a);
 220
 221        /* Tuner ioctls */
 222        int (*vidioc_g_tuner)          (struct file *file, void *fh,
 223                                        struct v4l2_tuner *a);
 224        int (*vidioc_s_tuner)          (struct file *file, void *fh,
 225                                        struct v4l2_tuner *a);
 226        int (*vidioc_g_frequency)      (struct file *file, void *fh,
 227                                        struct v4l2_frequency *a);
 228        int (*vidioc_s_frequency)      (struct file *file, void *fh,
 229                                        struct v4l2_frequency *a);
 230
 231        /* Sliced VBI cap */
 232        int (*vidioc_g_sliced_vbi_cap) (struct file *file, void *fh,
 233                                        struct v4l2_sliced_vbi_cap *a);
 234
 235        /* Log status ioctl */
 236        int (*vidioc_log_status)       (struct file *file, void *fh);
 237
 238        int (*vidioc_s_hw_freq_seek)   (struct file *file, void *fh,
 239                                        struct v4l2_hw_freq_seek *a);
 240
 241        /* Debugging ioctls */
 242#ifdef CONFIG_VIDEO_ADV_DEBUG
 243        int (*vidioc_g_register)       (struct file *file, void *fh,
 244                                        struct v4l2_dbg_register *reg);
 245        int (*vidioc_s_register)       (struct file *file, void *fh,
 246                                        struct v4l2_dbg_register *reg);
 247#endif
 248        int (*vidioc_g_chip_ident)     (struct file *file, void *fh,
 249                                        struct v4l2_dbg_chip_ident *chip);
 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_enum_dv_presets) (struct file *file, void *fh,
 259                                       struct v4l2_dv_enum_preset *preset);
 260
 261        int (*vidioc_s_dv_preset) (struct file *file, void *fh,
 262                                   struct v4l2_dv_preset *preset);
 263        int (*vidioc_g_dv_preset) (struct file *file, void *fh,
 264                                   struct v4l2_dv_preset *preset);
 265        int (*vidioc_query_dv_preset) (struct file *file, void *fh,
 266                                        struct v4l2_dv_preset *qpreset);
 267        int (*vidioc_s_dv_timings) (struct file *file, void *fh,
 268                                    struct v4l2_dv_timings *timings);
 269        int (*vidioc_g_dv_timings) (struct file *file, void *fh,
 270                                    struct v4l2_dv_timings *timings);
 271
 272        int (*vidioc_subscribe_event)  (struct v4l2_fh *fh,
 273                                        struct v4l2_event_subscription *sub);
 274        int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh,
 275                                        struct v4l2_event_subscription *sub);
 276
 277        /* For other private ioctls */
 278        long (*vidioc_default)         (struct file *file, void *fh,
 279                                        bool valid_prio, int cmd, void *arg);
 280};
 281
 282
 283/* v4l debugging and diagnostics */
 284
 285/* Debug bitmask flags to be used on V4L2 */
 286#define V4L2_DEBUG_IOCTL     0x01
 287#define V4L2_DEBUG_IOCTL_ARG 0x02
 288
 289/* Use this macro for non-I2C drivers. Pass the driver name as the first arg. */
 290#define v4l_print_ioctl(name, cmd)               \
 291        do {                                     \
 292                printk(KERN_DEBUG "%s: ", name); \
 293                v4l_printk_ioctl(cmd);           \
 294        } while (0)
 295
 296/* Use this macro in I2C drivers where 'client' is the struct i2c_client
 297   pointer */
 298#define v4l_i2c_print_ioctl(client, cmd)                   \
 299        do {                                               \
 300                v4l_client_printk(KERN_DEBUG, client, ""); \
 301                v4l_printk_ioctl(cmd);                     \
 302        } while (0)
 303
 304/*  Video standard functions  */
 305extern const char *v4l2_norm_to_name(v4l2_std_id id);
 306extern void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod);
 307extern int v4l2_video_std_construct(struct v4l2_standard *vs,
 308                                    int id, const char *name);
 309/* Prints the ioctl in a human-readable format */
 310extern void v4l_printk_ioctl(unsigned int cmd);
 311
 312/* names for fancy debug output */
 313extern const char *v4l2_field_names[];
 314extern const char *v4l2_type_names[];
 315
 316#ifdef CONFIG_COMPAT
 317/* 32 Bits compatibility layer for 64 bits processors */
 318extern long v4l2_compat_ioctl32(struct file *file, unsigned int cmd,
 319                                unsigned long arg);
 320#endif
 321
 322typedef long (*v4l2_kioctl)(struct file *file,
 323                unsigned int cmd, void *arg);
 324
 325/* Include support for obsoleted stuff */
 326extern long video_usercopy(struct file *file, unsigned int cmd,
 327                                unsigned long arg, v4l2_kioctl func);
 328
 329/* Standard handlers for V4L ioctl's */
 330extern long video_ioctl2(struct file *file,
 331                        unsigned int cmd, unsigned long arg);
 332
 333#endif /* _V4L2_IOCTL_H */
 334