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_type_private)(struct file *file, void *fh,
  41                                            struct v4l2_fmtdesc *f);
  42
  43        /* VIDIOC_G_FMT handlers */
  44        int (*vidioc_g_fmt_vid_cap)    (struct file *file, void *fh,
  45                                        struct v4l2_format *f);
  46        int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh,
  47                                        struct v4l2_format *f);
  48        int (*vidioc_g_fmt_vid_out)    (struct file *file, void *fh,
  49                                        struct v4l2_format *f);
  50        int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh,
  51                                        struct v4l2_format *f);
  52        int (*vidioc_g_fmt_vbi_cap)    (struct file *file, void *fh,
  53                                        struct v4l2_format *f);
  54        int (*vidioc_g_fmt_vbi_out)    (struct file *file, void *fh,
  55                                        struct v4l2_format *f);
  56        int (*vidioc_g_fmt_sliced_vbi_cap)(struct file *file, void *fh,
  57                                        struct v4l2_format *f);
  58        int (*vidioc_g_fmt_sliced_vbi_out)(struct file *file, void *fh,
  59                                        struct v4l2_format *f);
  60        int (*vidioc_g_fmt_type_private)(struct file *file, void *fh,
  61                                        struct v4l2_format *f);
  62
  63        /* VIDIOC_S_FMT handlers */
  64        int (*vidioc_s_fmt_vid_cap)    (struct file *file, void *fh,
  65                                        struct v4l2_format *f);
  66        int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh,
  67                                        struct v4l2_format *f);
  68        int (*vidioc_s_fmt_vid_out)    (struct file *file, void *fh,
  69                                        struct v4l2_format *f);
  70        int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh,
  71                                        struct v4l2_format *f);
  72        int (*vidioc_s_fmt_vbi_cap)    (struct file *file, void *fh,
  73                                        struct v4l2_format *f);
  74        int (*vidioc_s_fmt_vbi_out)    (struct file *file, void *fh,
  75                                        struct v4l2_format *f);
  76        int (*vidioc_s_fmt_sliced_vbi_cap)(struct file *file, void *fh,
  77                                        struct v4l2_format *f);
  78        int (*vidioc_s_fmt_sliced_vbi_out)(struct file *file, void *fh,
  79                                        struct v4l2_format *f);
  80        int (*vidioc_s_fmt_type_private)(struct file *file, void *fh,
  81                                        struct v4l2_format *f);
  82
  83        /* VIDIOC_TRY_FMT handlers */
  84        int (*vidioc_try_fmt_vid_cap)    (struct file *file, void *fh,
  85                                          struct v4l2_format *f);
  86        int (*vidioc_try_fmt_vid_overlay)(struct file *file, void *fh,
  87                                          struct v4l2_format *f);
  88        int (*vidioc_try_fmt_vid_out)    (struct file *file, void *fh,
  89                                          struct v4l2_format *f);
  90        int (*vidioc_try_fmt_vid_out_overlay)(struct file *file, void *fh,
  91                                          struct v4l2_format *f);
  92        int (*vidioc_try_fmt_vbi_cap)    (struct file *file, void *fh,
  93                                          struct v4l2_format *f);
  94        int (*vidioc_try_fmt_vbi_out)    (struct file *file, void *fh,
  95                                          struct v4l2_format *f);
  96        int (*vidioc_try_fmt_sliced_vbi_cap)(struct file *file, void *fh,
  97                                          struct v4l2_format *f);
  98        int (*vidioc_try_fmt_sliced_vbi_out)(struct file *file, void *fh,
  99                                          struct v4l2_format *f);
 100        int (*vidioc_try_fmt_type_private)(struct file *file, void *fh,
 101                                          struct v4l2_format *f);
 102
 103        /* Buffer handlers */
 104        int (*vidioc_reqbufs) (struct file *file, void *fh, struct v4l2_requestbuffers *b);
 105        int (*vidioc_querybuf)(struct file *file, void *fh, struct v4l2_buffer *b);
 106        int (*vidioc_qbuf)    (struct file *file, void *fh, struct v4l2_buffer *b);
 107        int (*vidioc_dqbuf)   (struct file *file, void *fh, struct v4l2_buffer *b);
 108
 109
 110        int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i);
 111        int (*vidioc_g_fbuf)   (struct file *file, void *fh,
 112                                struct v4l2_framebuffer *a);
 113        int (*vidioc_s_fbuf)   (struct file *file, void *fh,
 114                                struct v4l2_framebuffer *a);
 115
 116                /* Stream on/off */
 117        int (*vidioc_streamon) (struct file *file, void *fh, enum v4l2_buf_type i);
 118        int (*vidioc_streamoff)(struct file *file, void *fh, enum v4l2_buf_type i);
 119
 120                /* Standard handling
 121                        ENUMSTD is handled by videodev.c
 122                 */
 123        int (*vidioc_g_std) (struct file *file, void *fh, v4l2_std_id *norm);
 124        int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id *norm);
 125        int (*vidioc_querystd) (struct file *file, void *fh, v4l2_std_id *a);
 126
 127                /* Input handling */
 128        int (*vidioc_enum_input)(struct file *file, void *fh,
 129                                 struct v4l2_input *inp);
 130        int (*vidioc_g_input)   (struct file *file, void *fh, unsigned int *i);
 131        int (*vidioc_s_input)   (struct file *file, void *fh, unsigned int i);
 132
 133                /* Output handling */
 134        int (*vidioc_enum_output) (struct file *file, void *fh,
 135                                  struct v4l2_output *a);
 136        int (*vidioc_g_output)   (struct file *file, void *fh, unsigned int *i);
 137        int (*vidioc_s_output)   (struct file *file, void *fh, unsigned int i);
 138
 139                /* Control handling */
 140        int (*vidioc_queryctrl)        (struct file *file, void *fh,
 141                                        struct v4l2_queryctrl *a);
 142        int (*vidioc_g_ctrl)           (struct file *file, void *fh,
 143                                        struct v4l2_control *a);
 144        int (*vidioc_s_ctrl)           (struct file *file, void *fh,
 145                                        struct v4l2_control *a);
 146        int (*vidioc_g_ext_ctrls)      (struct file *file, void *fh,
 147                                        struct v4l2_ext_controls *a);
 148        int (*vidioc_s_ext_ctrls)      (struct file *file, void *fh,
 149                                        struct v4l2_ext_controls *a);
 150        int (*vidioc_try_ext_ctrls)    (struct file *file, void *fh,
 151                                        struct v4l2_ext_controls *a);
 152        int (*vidioc_querymenu)        (struct file *file, void *fh,
 153                                        struct v4l2_querymenu *a);
 154
 155        /* Audio ioctls */
 156        int (*vidioc_enumaudio)        (struct file *file, void *fh,
 157                                        struct v4l2_audio *a);
 158        int (*vidioc_g_audio)          (struct file *file, void *fh,
 159                                        struct v4l2_audio *a);
 160        int (*vidioc_s_audio)          (struct file *file, void *fh,
 161                                        struct v4l2_audio *a);
 162
 163        /* Audio out ioctls */
 164        int (*vidioc_enumaudout)       (struct file *file, void *fh,
 165                                        struct v4l2_audioout *a);
 166        int (*vidioc_g_audout)         (struct file *file, void *fh,
 167                                        struct v4l2_audioout *a);
 168        int (*vidioc_s_audout)         (struct file *file, void *fh,
 169                                        struct v4l2_audioout *a);
 170        int (*vidioc_g_modulator)      (struct file *file, void *fh,
 171                                        struct v4l2_modulator *a);
 172        int (*vidioc_s_modulator)      (struct file *file, void *fh,
 173                                        struct v4l2_modulator *a);
 174        /* Crop ioctls */
 175        int (*vidioc_cropcap)          (struct file *file, void *fh,
 176                                        struct v4l2_cropcap *a);
 177        int (*vidioc_g_crop)           (struct file *file, void *fh,
 178                                        struct v4l2_crop *a);
 179        int (*vidioc_s_crop)           (struct file *file, void *fh,
 180                                        struct v4l2_crop *a);
 181        /* Compression ioctls */
 182        int (*vidioc_g_jpegcomp)       (struct file *file, void *fh,
 183                                        struct v4l2_jpegcompression *a);
 184        int (*vidioc_s_jpegcomp)       (struct file *file, void *fh,
 185                                        struct v4l2_jpegcompression *a);
 186        int (*vidioc_g_enc_index)      (struct file *file, void *fh,
 187                                        struct v4l2_enc_idx *a);
 188        int (*vidioc_encoder_cmd)      (struct file *file, void *fh,
 189                                        struct v4l2_encoder_cmd *a);
 190        int (*vidioc_try_encoder_cmd)  (struct file *file, void *fh,
 191                                        struct v4l2_encoder_cmd *a);
 192
 193        /* Stream type-dependent parameter ioctls */
 194        int (*vidioc_g_parm)           (struct file *file, void *fh,
 195                                        struct v4l2_streamparm *a);
 196        int (*vidioc_s_parm)           (struct file *file, void *fh,
 197                                        struct v4l2_streamparm *a);
 198
 199        /* Tuner ioctls */
 200        int (*vidioc_g_tuner)          (struct file *file, void *fh,
 201                                        struct v4l2_tuner *a);
 202        int (*vidioc_s_tuner)          (struct file *file, void *fh,
 203                                        struct v4l2_tuner *a);
 204        int (*vidioc_g_frequency)      (struct file *file, void *fh,
 205                                        struct v4l2_frequency *a);
 206        int (*vidioc_s_frequency)      (struct file *file, void *fh,
 207                                        struct v4l2_frequency *a);
 208
 209        /* Sliced VBI cap */
 210        int (*vidioc_g_sliced_vbi_cap) (struct file *file, void *fh,
 211                                        struct v4l2_sliced_vbi_cap *a);
 212
 213        /* Log status ioctl */
 214        int (*vidioc_log_status)       (struct file *file, void *fh);
 215
 216        int (*vidioc_s_hw_freq_seek)   (struct file *file, void *fh,
 217                                        struct v4l2_hw_freq_seek *a);
 218
 219        /* Debugging ioctls */
 220#ifdef CONFIG_VIDEO_ADV_DEBUG
 221        int (*vidioc_g_register)       (struct file *file, void *fh,
 222                                        struct v4l2_dbg_register *reg);
 223        int (*vidioc_s_register)       (struct file *file, void *fh,
 224                                        struct v4l2_dbg_register *reg);
 225#endif
 226        int (*vidioc_g_chip_ident)     (struct file *file, void *fh,
 227                                        struct v4l2_dbg_chip_ident *chip);
 228
 229        int (*vidioc_enum_framesizes)   (struct file *file, void *fh,
 230                                         struct v4l2_frmsizeenum *fsize);
 231
 232        int (*vidioc_enum_frameintervals) (struct file *file, void *fh,
 233                                           struct v4l2_frmivalenum *fival);
 234
 235        /* DV Timings IOCTLs */
 236        int (*vidioc_enum_dv_presets) (struct file *file, void *fh,
 237                                       struct v4l2_dv_enum_preset *preset);
 238
 239        int (*vidioc_s_dv_preset) (struct file *file, void *fh,
 240                                   struct v4l2_dv_preset *preset);
 241        int (*vidioc_g_dv_preset) (struct file *file, void *fh,
 242                                   struct v4l2_dv_preset *preset);
 243        int (*vidioc_query_dv_preset) (struct file *file, void *fh,
 244                                        struct v4l2_dv_preset *qpreset);
 245        int (*vidioc_s_dv_timings) (struct file *file, void *fh,
 246                                    struct v4l2_dv_timings *timings);
 247        int (*vidioc_g_dv_timings) (struct file *file, void *fh,
 248                                    struct v4l2_dv_timings *timings);
 249
 250        int (*vidioc_subscribe_event)  (struct v4l2_fh *fh,
 251                                        struct v4l2_event_subscription *sub);
 252        int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh,
 253                                        struct v4l2_event_subscription *sub);
 254
 255        /* For other private ioctls */
 256        long (*vidioc_default)         (struct file *file, void *fh,
 257                                        int cmd, void *arg);
 258};
 259
 260
 261/* v4l debugging and diagnostics */
 262
 263/* Debug bitmask flags to be used on V4L2 */
 264#define V4L2_DEBUG_IOCTL     0x01
 265#define V4L2_DEBUG_IOCTL_ARG 0x02
 266
 267/* Use this macro for non-I2C drivers. Pass the driver name as the first arg. */
 268#define v4l_print_ioctl(name, cmd)               \
 269        do {                                     \
 270                printk(KERN_DEBUG "%s: ", name); \
 271                v4l_printk_ioctl(cmd);           \
 272        } while (0)
 273
 274/* Use this macro in I2C drivers where 'client' is the struct i2c_client
 275   pointer */
 276#define v4l_i2c_print_ioctl(client, cmd)                   \
 277        do {                                               \
 278                v4l_client_printk(KERN_DEBUG, client, ""); \
 279                v4l_printk_ioctl(cmd);                     \
 280        } while (0)
 281
 282/*  Video standard functions  */
 283extern const char *v4l2_norm_to_name(v4l2_std_id id);
 284extern void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod);
 285extern int v4l2_video_std_construct(struct v4l2_standard *vs,
 286                                    int id, const char *name);
 287/* Prints the ioctl in a human-readable format */
 288extern void v4l_printk_ioctl(unsigned int cmd);
 289
 290/* names for fancy debug output */
 291extern const char *v4l2_field_names[];
 292extern const char *v4l2_type_names[];
 293
 294#ifdef CONFIG_COMPAT
 295/* 32 Bits compatibility layer for 64 bits processors */
 296extern long v4l2_compat_ioctl32(struct file *file, unsigned int cmd,
 297                                unsigned long arg);
 298#endif
 299
 300typedef long (*v4l2_kioctl)(struct file *file,
 301                unsigned int cmd, void *arg);
 302
 303/* Include support for obsoleted stuff */
 304extern long video_usercopy(struct file *file, unsigned int cmd,
 305                                unsigned long arg, v4l2_kioctl func);
 306
 307/* Standard handlers for V4L ioctl's */
 308extern long video_ioctl2(struct file *file,
 309                        unsigned int cmd, unsigned long arg);
 310
 311#endif /* _V4L2_IOCTL_H */
 312