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/sched/signal.h>
  16 #include <linux/compiler.h> /* need __user */
  17 #include <linux/videodev2.h>
  18
  19 struct v4l2_fh;
  20
  21 /**
  22  * struct v4l2_ioctl_ops - describe operations for each V4L2 ioctl
  23  *
  24  * @vidioc_querycap: pointer to the function that implements
  25  *      :ref:`VIDIOC_QUERYCAP <vidioc_querycap>` ioctl
  26  * @vidioc_enum_fmt_vid_cap: pointer to the function that implements
  27  *      :ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
  28  *      for video capture in single plane mode
  29  * @vidioc_enum_fmt_vid_overlay: pointer to the function that implements
  30  *      :ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
  31  *      for video overlay
  32  * @vidioc_enum_fmt_vid_out: pointer to the function that implements
  33  *      :ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
  34  *      for video output in single plane mode
  35  * @vidioc_enum_fmt_vid_cap_mplane: pointer to the function that implements
  36  *      :ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
  37  *      for video capture in multiplane mode
  38  * @vidioc_enum_fmt_vid_out_mplane: pointer to the function that implements
  39  *      :ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
  40  *      for video output in multiplane mode
  41  * @vidioc_enum_fmt_sdr_cap: pointer to the function that implements
  42  *      :ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
  43  *      for Software Defined Radio capture
  44  * @vidioc_enum_fmt_sdr_out: pointer to the function that implements
  45  *      :ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
  46  *      for Software Defined Radio output
  47  * @vidioc_enum_fmt_meta_cap: pointer to the function that implements
  48  *      :ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
  49  *      for metadata capture
  50  * @vidioc_g_fmt_vid_cap: pointer to the function that implements
  51  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video capture
  52  *      in single plane mode
  53  * @vidioc_g_fmt_vid_overlay: pointer to the function that implements
  54  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video overlay
  55  * @vidioc_g_fmt_vid_out: pointer to the function that implements
  56  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video out
  57  *      in single plane mode
  58  * @vidioc_g_fmt_vid_out_overlay: pointer to the function that implements
  59  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video overlay output
  60  * @vidioc_g_fmt_vbi_cap: pointer to the function that implements
  61  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for raw VBI capture
  62  * @vidioc_g_fmt_vbi_out: pointer to the function that implements
  63  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for raw VBI output
  64  * @vidioc_g_fmt_sliced_vbi_cap: pointer to the function that implements
  65  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI capture
  66  * @vidioc_g_fmt_sliced_vbi_out: pointer to the function that implements
  67  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI output
  68  * @vidioc_g_fmt_vid_cap_mplane: pointer to the function that implements
  69  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video capture
  70  *      in multiple plane mode
  71  * @vidioc_g_fmt_vid_out_mplane: pointer to the function that implements
  72  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video out
  73  *      in multiplane plane mode
  74  * @vidioc_g_fmt_sdr_cap: pointer to the function that implements
  75  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
  76  *      Radio capture
  77  * @vidioc_g_fmt_sdr_out: pointer to the function that implements
  78  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
  79  *      Radio output
  80  * @vidioc_g_fmt_meta_cap: pointer to the function that implements
  81  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for metadata capture
  82  * @vidioc_s_fmt_vid_cap: pointer to the function that implements
  83  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video capture
  84  *      in single plane mode
  85  * @vidioc_s_fmt_vid_overlay: pointer to the function that implements
  86  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video overlay
  87  * @vidioc_s_fmt_vid_out: pointer to the function that implements
  88  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video out
  89  *      in single plane mode
  90  * @vidioc_s_fmt_vid_out_overlay: pointer to the function that implements
  91  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video overlay output
  92  * @vidioc_s_fmt_vbi_cap: pointer to the function that implements
  93  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for raw VBI capture
  94  * @vidioc_s_fmt_vbi_out: pointer to the function that implements
  95  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for raw VBI output
  96  * @vidioc_s_fmt_sliced_vbi_cap: pointer to the function that implements
  97  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI capture
  98  * @vidioc_s_fmt_sliced_vbi_out: pointer to the function that implements
  99  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI output
 100  * @vidioc_s_fmt_vid_cap_mplane: pointer to the function that implements
 101  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video capture
 102  *      in multiple plane mode
 103  * @vidioc_s_fmt_vid_out_mplane: pointer to the function that implements
 104  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video out
 105  *      in multiplane plane mode
 106  * @vidioc_s_fmt_sdr_cap: pointer to the function that implements
 107  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
 108  *      Radio capture
 109  * @vidioc_s_fmt_sdr_out: pointer to the function that implements
 110  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
 111  *      Radio output
 112  * @vidioc_s_fmt_meta_cap: pointer to the function that implements
 113  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for metadata capture
 114  * @vidioc_try_fmt_vid_cap: pointer to the function that implements
 115  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video capture
 116  *      in single plane mode
 117  * @vidioc_try_fmt_vid_overlay: pointer to the function that implements
 118  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video overlay
 119  * @vidioc_try_fmt_vid_out: pointer to the function that implements
 120  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video out
 121  *      in single plane mode
 122  * @vidioc_try_fmt_vid_out_overlay: pointer to the function that implements
 123  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video overlay
 124  *      output
 125  * @vidioc_try_fmt_vbi_cap: pointer to the function that implements
 126  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for raw VBI capture
 127  * @vidioc_try_fmt_vbi_out: pointer to the function that implements
 128  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for raw VBI output
 129  * @vidioc_try_fmt_sliced_vbi_cap: pointer to the function that implements
 130  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI
 131  *      capture
 132  * @vidioc_try_fmt_sliced_vbi_out: pointer to the function that implements
 133  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI output
 134  * @vidioc_try_fmt_vid_cap_mplane: pointer to the function that implements
 135  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video capture
 136  *      in multiple plane mode
 137  * @vidioc_try_fmt_vid_out_mplane: pointer to the function that implements
 138  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video out
 139  *      in multiplane plane mode
 140  * @vidioc_try_fmt_sdr_cap: pointer to the function that implements
 141  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
 142  *      Radio capture
 143  * @vidioc_try_fmt_sdr_out: pointer to the function that implements
 144  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
 145  *      Radio output
 146  * @vidioc_try_fmt_meta_cap: pointer to the function that implements
 147  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for metadata capture
 148  * @vidioc_reqbufs: pointer to the function that implements
 149  *      :ref:`VIDIOC_REQBUFS <vidioc_reqbufs>` ioctl
 150  * @vidioc_querybuf: pointer to the function that implements
 151  *      :ref:`VIDIOC_QUERYBUF <vidioc_querybuf>` ioctl
 152  * @vidioc_qbuf: pointer to the function that implements
 153  *      :ref:`VIDIOC_QBUF <vidioc_qbuf>` ioctl
 154  * @vidioc_expbuf: pointer to the function that implements
 155  *      :ref:`VIDIOC_EXPBUF <vidioc_expbuf>` ioctl
 156  * @vidioc_dqbuf: pointer to the function that implements
 157  *      :ref:`VIDIOC_DQBUF <vidioc_qbuf>` ioctl
 158  * @vidioc_create_bufs: pointer to the function that implements
 159  *      :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
 160  * @vidioc_prepare_buf: pointer to the function that implements
 161  *      :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
 162  * @vidioc_overlay: pointer to the function that implements
 163  *      :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
 164  * @vidioc_g_fbuf: pointer to the function that implements
 165  *      :ref:`VIDIOC_G_FBUF <vidioc_g_fbuf>` ioctl
 166  * @vidioc_s_fbuf: pointer to the function that implements
 167  *      :ref:`VIDIOC_S_FBUF <vidioc_g_fbuf>` ioctl
 168  * @vidioc_streamon: pointer to the function that implements
 169  *      :ref:`VIDIOC_STREAMON <vidioc_streamon>` ioctl
 170  * @vidioc_streamoff: pointer to the function that implements
 171  *      :ref:`VIDIOC_STREAMOFF <vidioc_streamon>` ioctl
 172  * @vidioc_g_std: pointer to the function that implements
 173  *      :ref:`VIDIOC_G_STD <vidioc_g_std>` ioctl
 174  * @vidioc_s_std: pointer to the function that implements
 175  *      :ref:`VIDIOC_S_STD <vidioc_g_std>` ioctl
 176  * @vidioc_querystd: pointer to the function that implements
 177  *      :ref:`VIDIOC_QUERYSTD <vidioc_querystd>` ioctl
 178  * @vidioc_enum_input: pointer to the function that implements
 179  *      :ref:`VIDIOC_ENUM_INPUT <vidioc_g_input>` ioctl
 180  * @vidioc_g_input: pointer to the function that implements
 181  *      :ref:`VIDIOC_G_INPUT <vidioc_g_input>` ioctl
 182  * @vidioc_s_input: pointer to the function that implements
 183  *      :ref:`VIDIOC_S_INPUT <vidioc_g_input>` ioctl
 184  * @vidioc_enum_output: pointer to the function that implements
 185  *      :ref:`VIDIOC_ENUM_OUTPUT <vidioc_g_output>` ioctl
 186  * @vidioc_g_output: pointer to the function that implements
 187  *      :ref:`VIDIOC_G_OUTPUT <vidioc_g_output>` ioctl
 188  * @vidioc_s_output: pointer to the function that implements
 189  *      :ref:`VIDIOC_S_OUTPUT <vidioc_g_output>` ioctl
 190  * @vidioc_queryctrl: pointer to the function that implements
 191  *      :ref:`VIDIOC_QUERYCTRL <vidioc_queryctrl>` ioctl
 192  * @vidioc_query_ext_ctrl: pointer to the function that implements
 193  *      :ref:`VIDIOC_QUERY_EXT_CTRL <vidioc_queryctrl>` ioctl
 194  * @vidioc_g_ctrl: pointer to the function that implements
 195  *      :ref:`VIDIOC_G_CTRL <vidioc_g_ctrl>` ioctl
 196  * @vidioc_s_ctrl: pointer to the function that implements
 197  *      :ref:`VIDIOC_S_CTRL <vidioc_g_ctrl>` ioctl
 198  * @vidioc_g_ext_ctrls: pointer to the function that implements
 199  *      :ref:`VIDIOC_G_EXT_CTRLS <vidioc_g_ext_ctrls>` ioctl
 200  * @vidioc_s_ext_ctrls: pointer to the function that implements
 201  *      :ref:`VIDIOC_S_EXT_CTRLS <vidioc_g_ext_ctrls>` ioctl
 202  * @vidioc_try_ext_ctrls: pointer to the function that implements
 203  *      :ref:`VIDIOC_TRY_EXT_CTRLS <vidioc_g_ext_ctrls>` ioctl
 204  * @vidioc_querymenu: pointer to the function that implements
 205  *      :ref:`VIDIOC_QUERYMENU <vidioc_queryctrl>` ioctl
 206  * @vidioc_enumaudio: pointer to the function that implements
 207  *      :ref:`VIDIOC_ENUMAUDIO <vidioc_enumaudio>` ioctl
 208  * @vidioc_g_audio: pointer to the function that implements
 209  *      :ref:`VIDIOC_G_AUDIO <vidioc_g_audio>` ioctl
 210  * @vidioc_s_audio: pointer to the function that implements
 211  *      :ref:`VIDIOC_S_AUDIO <vidioc_g_audio>` ioctl
 212  * @vidioc_enumaudout: pointer to the function that implements
 213  *      :ref:`VIDIOC_ENUMAUDOUT <vidioc_enumaudout>` ioctl
 214  * @vidioc_g_audout: pointer to the function that implements
 215  *      :ref:`VIDIOC_G_AUDOUT <vidioc_g_audout>` ioctl
 216  * @vidioc_s_audout: pointer to the function that implements
 217  *      :ref:`VIDIOC_S_AUDOUT <vidioc_g_audout>` ioctl
 218  * @vidioc_g_modulator: pointer to the function that implements
 219  *      :ref:`VIDIOC_G_MODULATOR <vidioc_g_modulator>` ioctl
 220  * @vidioc_s_modulator: pointer to the function that implements
 221  *      :ref:`VIDIOC_S_MODULATOR <vidioc_g_modulator>` ioctl
 222  * @vidioc_cropcap: pointer to the function that implements
 223  *      :ref:`VIDIOC_CROPCAP <vidioc_cropcap>` ioctl
 224  * @vidioc_g_crop: pointer to the function that implements
 225  *      :ref:`VIDIOC_G_CROP <vidioc_g_crop>` ioctl
 226  * @vidioc_s_crop: pointer to the function that implements
 227  *      :ref:`VIDIOC_S_CROP <vidioc_g_crop>` ioctl
 228  * @vidioc_g_selection: pointer to the function that implements
 229  *      :ref:`VIDIOC_G_SELECTION <vidioc_g_selection>` ioctl
 230  * @vidioc_s_selection: pointer to the function that implements
 231  *      :ref:`VIDIOC_S_SELECTION <vidioc_g_selection>` ioctl
 232  * @vidioc_g_jpegcomp: pointer to the function that implements
 233  *      :ref:`VIDIOC_G_JPEGCOMP <vidioc_g_jpegcomp>` ioctl
 234  * @vidioc_s_jpegcomp: pointer to the function that implements
 235  *      :ref:`VIDIOC_S_JPEGCOMP <vidioc_g_jpegcomp>` ioctl
 236  * @vidioc_g_enc_index: pointer to the function that implements
 237  *      :ref:`VIDIOC_G_ENC_INDEX <vidioc_g_enc_index>` ioctl
 238  * @vidioc_encoder_cmd: pointer to the function that implements
 239  *      :ref:`VIDIOC_ENCODER_CMD <vidioc_encoder_cmd>` ioctl
 240  * @vidioc_try_encoder_cmd: pointer to the function that implements
 241  *      :ref:`VIDIOC_TRY_ENCODER_CMD <vidioc_encoder_cmd>` ioctl
 242  * @vidioc_decoder_cmd: pointer to the function that implements
 243  *      :ref:`VIDIOC_DECODER_CMD <vidioc_decoder_cmd>` ioctl
 244  * @vidioc_try_decoder_cmd: pointer to the function that implements
 245  *      :ref:`VIDIOC_TRY_DECODER_CMD <vidioc_decoder_cmd>` ioctl
 246  * @vidioc_g_parm: pointer to the function that implements
 247  *      :ref:`VIDIOC_G_PARM <vidioc_g_parm>` ioctl
 248  * @vidioc_s_parm: pointer to the function that implements
 249  *      :ref:`VIDIOC_S_PARM <vidioc_g_parm>` ioctl
 250  * @vidioc_g_tuner: pointer to the function that implements
 251  *      :ref:`VIDIOC_G_TUNER <vidioc_g_tuner>` ioctl
 252  * @vidioc_s_tuner: pointer to the function that implements
 253  *      :ref:`VIDIOC_S_TUNER <vidioc_g_tuner>` ioctl
 254  * @vidioc_g_frequency: pointer to the function that implements
 255  *      :ref:`VIDIOC_G_FREQUENCY <vidioc_g_frequency>` ioctl
 256  * @vidioc_s_frequency: pointer to the function that implements
 257  *      :ref:`VIDIOC_S_FREQUENCY <vidioc_g_frequency>` ioctl
 258  * @vidioc_enum_freq_bands: pointer to the function that implements
 259  *      :ref:`VIDIOC_ENUM_FREQ_BANDS <vidioc_enum_freq_bands>` ioctl
 260  * @vidioc_g_sliced_vbi_cap: pointer to the function that implements
 261  *      :ref:`VIDIOC_G_SLICED_VBI_CAP <vidioc_g_sliced_vbi_cap>` ioctl
 262  * @vidioc_log_status: pointer to the function that implements
 263  *      :ref:`VIDIOC_LOG_STATUS <vidioc_log_status>` ioctl
 264  * @vidioc_s_hw_freq_seek: pointer to the function that implements
 265  *      :ref:`VIDIOC_S_HW_FREQ_SEEK <vidioc_s_hw_freq_seek>` ioctl
 266  * @vidioc_g_register: pointer to the function that implements
 267  *      :ref:`VIDIOC_DBG_G_REGISTER <vidioc_dbg_g_register>` ioctl
 268  * @vidioc_s_register: pointer to the function that implements
 269  *      :ref:`VIDIOC_DBG_S_REGISTER <vidioc_dbg_g_register>` ioctl
 270  * @vidioc_g_chip_info: pointer to the function that implements
 271  *      :ref:`VIDIOC_DBG_G_CHIP_INFO <vidioc_dbg_g_chip_info>` ioctl
 272  * @vidioc_enum_framesizes: pointer to the function that implements
 273  *      :ref:`VIDIOC_ENUM_FRAMESIZES <vidioc_enum_framesizes>` ioctl
 274  * @vidioc_enum_frameintervals: pointer to the function that implements
 275  *      :ref:`VIDIOC_ENUM_FRAMEINTERVALS <vidioc_enum_frameintervals>` ioctl
 276  * @vidioc_s_dv_timings: pointer to the function that implements
 277  *      :ref:`VIDIOC_S_DV_TIMINGS <vidioc_g_dv_timings>` ioctl
 278  * @vidioc_g_dv_timings: pointer to the function that implements
 279  *      :ref:`VIDIOC_G_DV_TIMINGS <vidioc_g_dv_timings>` ioctl
 280  * @vidioc_query_dv_timings: pointer to the function that implements
 281  *      :ref:`VIDIOC_QUERY_DV_TIMINGS <vidioc_query_dv_timings>` ioctl
 282  * @vidioc_enum_dv_timings: pointer to the function that implements
 283  *      :ref:`VIDIOC_ENUM_DV_TIMINGS <vidioc_enum_dv_timings>` ioctl
 284  * @vidioc_dv_timings_cap: pointer to the function that implements
 285  *      :ref:`VIDIOC_DV_TIMINGS_CAP <vidioc_dv_timings_cap>` ioctl
 286  * @vidioc_g_edid: pointer to the function that implements
 287  *      :ref:`VIDIOC_G_EDID <vidioc_g_edid>` ioctl
 288  * @vidioc_s_edid: pointer to the function that implements
 289  *      :ref:`VIDIOC_S_EDID <vidioc_g_edid>` ioctl
 290  * @vidioc_subscribe_event: pointer to the function that implements
 291  *      :ref:`VIDIOC_SUBSCRIBE_EVENT <vidioc_subscribe_event>` ioctl
 292  * @vidioc_unsubscribe_event: pointer to the function that implements
 293  *      :ref:`VIDIOC_UNSUBSCRIBE_EVENT <vidioc_unsubscribe_event>` ioctl
 294  * @vidioc_default: pointed used to allow other ioctls
 295  */
 296 struct v4l2_ioctl_ops {
 297         /* ioctl callbacks */
 298
 299         /* VIDIOC_QUERYCAP handler */
 300         int (*vidioc_querycap)(struct file *file, void *fh,
 301                                struct v4l2_capability *cap);
 302
 303         /* VIDIOC_ENUM_FMT handlers */
 304         int (*vidioc_enum_fmt_vid_cap)(struct file *file, void *fh,
 305                                        struct v4l2_fmtdesc *f);
 306         int (*vidioc_enum_fmt_vid_overlay)(struct file *file, void *fh,
 307                                            struct v4l2_fmtdesc *f);
 308         int (*vidioc_enum_fmt_vid_out)(struct file *file, void *fh,
 309                                        struct v4l2_fmtdesc *f);
 310         int (*vidioc_enum_fmt_vid_cap_mplane)(struct file *file, void *fh,
 311                                               struct v4l2_fmtdesc *f);
 312         int (*vidioc_enum_fmt_vid_out_mplane)(struct file *file, void *fh,
 313                                               struct v4l2_fmtdesc *f);
 314         int (*vidioc_enum_fmt_sdr_cap)(struct file *file, void *fh,
 315                                        struct v4l2_fmtdesc *f);
 316         int (*vidioc_enum_fmt_sdr_out)(struct file *file, void *fh,
 317                                        struct v4l2_fmtdesc *f);
 318         int (*vidioc_enum_fmt_meta_cap)(struct file *file, void *fh,
 319                                         struct v4l2_fmtdesc *f);
 320
 321         /* VIDIOC_G_FMT handlers */
 322         int (*vidioc_g_fmt_vid_cap)(struct file *file, void *fh,
 323                                     struct v4l2_format *f);
 324         int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh,
 325                                         struct v4l2_format *f);
 326         int (*vidioc_g_fmt_vid_out)(struct file *file, void *fh,
 327                                     struct v4l2_format *f);
 328         int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh,
 329                                             struct v4l2_format *f);
 330         int (*vidioc_g_fmt_vbi_cap)(struct file *file, void *fh,
 331                                     struct v4l2_format *f);
 332         int (*vidioc_g_fmt_vbi_out)(struct file *file, void *fh,
 333                                     struct v4l2_format *f);
 334         int (*vidioc_g_fmt_sliced_vbi_cap)(struct file *file, void *fh,
 335                                            struct v4l2_format *f);
 336         int (*vidioc_g_fmt_sliced_vbi_out)(struct file *file, void *fh,
 337                                            struct v4l2_format *f);
 338         int (*vidioc_g_fmt_vid_cap_mplane)(struct file *file, void *fh,
 339                                            struct v4l2_format *f);
 340         int (*vidioc_g_fmt_vid_out_mplane)(struct file *file, void *fh,
 341                                            struct v4l2_format *f);
 342         int (*vidioc_g_fmt_sdr_cap)(struct file *file, void *fh,
 343                                     struct v4l2_format *f);
 344         int (*vidioc_g_fmt_sdr_out)(struct file *file, void *fh,
 345                                     struct v4l2_format *f);
 346         int (*vidioc_g_fmt_meta_cap)(struct file *file, void *fh,
 347                                      struct v4l2_format *f);
 348
 349         /* VIDIOC_S_FMT handlers */
 350         int (*vidioc_s_fmt_vid_cap)(struct file *file, void *fh,
 351                                     struct v4l2_format *f);
 352         int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh,
 353                                         struct v4l2_format *f);
 354         int (*vidioc_s_fmt_vid_out)(struct file *file, void *fh,
 355                                     struct v4l2_format *f);
 356         int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh,
 357                                             struct v4l2_format *f);
 358         int (*vidioc_s_fmt_vbi_cap)(struct file *file, void *fh,
 359                                     struct v4l2_format *f);
 360         int (*vidioc_s_fmt_vbi_out)(struct file *file, void *fh,
 361                                     struct v4l2_format *f);
 362         int (*vidioc_s_fmt_sliced_vbi_cap)(struct file *file, void *fh,
 363                                            struct v4l2_format *f);
 364         int (*vidioc_s_fmt_sliced_vbi_out)(struct file *file, void *fh,
 365                                            struct v4l2_format *f);
 366         int (*vidioc_s_fmt_vid_cap_mplane)(struct file *file, void *fh,
 367                                            struct v4l2_format *f);
 368         int (*vidioc_s_fmt_vid_out_mplane)(struct file *file, void *fh,
 369                                            struct v4l2_format *f);
 370         int (*vidioc_s_fmt_sdr_cap)(struct file *file, void *fh,
 371                                     struct v4l2_format *f);
 372         int (*vidioc_s_fmt_sdr_out)(struct file *file, void *fh,
 373                                     struct v4l2_format *f);
 374         int (*vidioc_s_fmt_meta_cap)(struct file *file, void *fh,
 375                                      struct v4l2_format *f);
 376
 377         /* VIDIOC_TRY_FMT handlers */
 378         int (*vidioc_try_fmt_vid_cap)(struct file *file, void *fh,
 379                                       struct v4l2_format *f);
 380         int (*vidioc_try_fmt_vid_overlay)(struct file *file, void *fh,
 381                                           struct v4l2_format *f);
 382         int (*vidioc_try_fmt_vid_out)(struct file *file, void *fh,
 383                                       struct v4l2_format *f);
 384         int (*vidioc_try_fmt_vid_out_overlay)(struct file *file, void *fh,
 385                                              struct v4l2_format *f);
 386         int (*vidioc_try_fmt_vbi_cap)(struct file *file, void *fh,
 387                                       struct v4l2_format *f);
 388         int (*vidioc_try_fmt_vbi_out)(struct file *file, void *fh,
 389                                       struct v4l2_format *f);
 390         int (*vidioc_try_fmt_sliced_vbi_cap)(struct file *file, void *fh,
 391                                              struct v4l2_format *f);
 392         int (*vidioc_try_fmt_sliced_vbi_out)(struct file *file, void *fh,
 393                                              struct v4l2_format *f);
 394         int (*vidioc_try_fmt_vid_cap_mplane)(struct file *file, void *fh,
 395                                              struct v4l2_format *f);
 396         int (*vidioc_try_fmt_vid_out_mplane)(struct file *file, void *fh,
 397                                              struct v4l2_format *f);
 398         int (*vidioc_try_fmt_sdr_cap)(struct file *file, void *fh,
 399                                       struct v4l2_format *f);
 400         int (*vidioc_try_fmt_sdr_out)(struct file *file, void *fh,
 401                                       struct v4l2_format *f);
 402         int (*vidioc_try_fmt_meta_cap)(struct file *file, void *fh,
 403                                        struct v4l2_format *f);
 404
 405         /* Buffer handlers */
 406         int (*vidioc_reqbufs)(struct file *file, void *fh,
 407                               struct v4l2_requestbuffers *b);
 408         int (*vidioc_querybuf)(struct file *file, void *fh,
 409                                struct v4l2_buffer *b);
 410         int (*vidioc_qbuf)(struct file *file, void *fh,
 411                            struct v4l2_buffer *b);
 412         int (*vidioc_expbuf)(struct file *file, void *fh,
 413                              struct v4l2_exportbuffer *e);
 414         int (*vidioc_dqbuf)(struct file *file, void *fh,
 415                             struct v4l2_buffer *b);
 416
 417         int (*vidioc_create_bufs)(struct file *file, void *fh,
 418                                   struct v4l2_create_buffers *b);
 419         int (*vidioc_prepare_buf)(struct file *file, void *fh,
 420                                   struct v4l2_buffer *b);
 421
 422         int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
 423         int (*vidioc_g_fbuf)(struct file *file, void *fh,
 424                              struct v4l2_framebuffer *a);
 425         int (*vidioc_s_fbuf)(struct file *file, void *fh,
 426                              const struct v4l2_framebuffer *a);
 427
 428                 /* Stream on/off */
 429         int (*vidioc_streamon)(struct file *file, void *fh,
 430                                enum v4l2_buf_type i);
 431         int (*vidioc_streamoff)(struct file *file, void *fh,
 432                                 enum v4l2_buf_type i);
 433
 434                 /*
 435                  * Standard handling
 436                  *
 437                  * Note: ENUMSTD is handled by videodev.c
 438                  */
 439         int (*vidioc_g_std)(struct file *file, void *fh, v4l2_std_id *norm);
 440         int (*vidioc_s_std)(struct file *file, void *fh, v4l2_std_id norm);
 441         int (*vidioc_querystd)(struct file *file, void *fh, v4l2_std_id *a);
 442
 443                 /* Input handling */
 444         int (*vidioc_enum_input)(struct file *file, void *fh,
 445                                  struct v4l2_input *inp);
 446         int (*vidioc_g_input)(struct file *file, void *fh, unsigned int *i);
 447         int (*vidioc_s_input)(struct file *file, void *fh, unsigned int i);
 448
 449                 /* Output handling */
 450         int (*vidioc_enum_output)(struct file *file, void *fh,
 451                                   struct v4l2_output *a);
 452         int (*vidioc_g_output)(struct file *file, void *fh, unsigned int *i);
 453         int (*vidioc_s_output)(struct file *file, void *fh, unsigned int i);
 454
 455                 /* Control handling */
 456         int (*vidioc_queryctrl)(struct file *file, void *fh,
 457                                 struct v4l2_queryctrl *a);
 458         int (*vidioc_query_ext_ctrl)(struct file *file, void *fh,
 459                                      struct v4l2_query_ext_ctrl *a);
 460         int (*vidioc_g_ctrl)(struct file *file, void *fh,
 461                              struct v4l2_control *a);
 462         int (*vidioc_s_ctrl)(struct file *file, void *fh,
 463                              struct v4l2_control *a);
 464         int (*vidioc_g_ext_ctrls)(struct file *file, void *fh,
 465                                   struct v4l2_ext_controls *a);
 466         int (*vidioc_s_ext_ctrls)(struct file *file, void *fh,
 467                                   struct v4l2_ext_controls *a);
 468         int (*vidioc_try_ext_ctrls)(struct file *file, void *fh,
 469                                     struct v4l2_ext_controls *a);
 470         int (*vidioc_querymenu)(struct file *file, void *fh,
 471                                 struct v4l2_querymenu *a);
 472
 473         /* Audio ioctls */
 474         int (*vidioc_enumaudio)(struct file *file, void *fh,
 475                                 struct v4l2_audio *a);
 476         int (*vidioc_g_audio)(struct file *file, void *fh,
 477                               struct v4l2_audio *a);
 478         int (*vidioc_s_audio)(struct file *file, void *fh,
 479                               const struct v4l2_audio *a);
 480
 481         /* Audio out ioctls */
 482         int (*vidioc_enumaudout)(struct file *file, void *fh,
 483                                  struct v4l2_audioout *a);
 484         int (*vidioc_g_audout)(struct file *file, void *fh,
 485                                struct v4l2_audioout *a);
 486         int (*vidioc_s_audout)(struct file *file, void *fh,
 487                                const struct v4l2_audioout *a);
 488         int (*vidioc_g_modulator)(struct file *file, void *fh,
 489                                   struct v4l2_modulator *a);
 490         int (*vidioc_s_modulator)(struct file *file, void *fh,
 491                                   const struct v4l2_modulator *a);
 492         /* Crop ioctls */
 493         int (*vidioc_cropcap)(struct file *file, void *fh,
 494                               struct v4l2_cropcap *a);
 495         int (*vidioc_g_crop)(struct file *file, void *fh,
 496                              struct v4l2_crop *a);
 497         int (*vidioc_s_crop)(struct file *file, void *fh,
 498                              const struct v4l2_crop *a);
 499         int (*vidioc_g_selection)(struct file *file, void *fh,
 500                                   struct v4l2_selection *s);
 501         int (*vidioc_s_selection)(struct file *file, void *fh,
 502                                   struct v4l2_selection *s);
 503         /* Compression ioctls */
 504         int (*vidioc_g_jpegcomp)(struct file *file, void *fh,
 505                                  struct v4l2_jpegcompression *a);
 506         int (*vidioc_s_jpegcomp)(struct file *file, void *fh,
 507                                  const struct v4l2_jpegcompression *a);
 508         int (*vidioc_g_enc_index)(struct file *file, void *fh,
 509                                   struct v4l2_enc_idx *a);
 510         int (*vidioc_encoder_cmd)(struct file *file, void *fh,
 511                                   struct v4l2_encoder_cmd *a);
 512         int (*vidioc_try_encoder_cmd)(struct file *file, void *fh,
 513                                       struct v4l2_encoder_cmd *a);
 514         int (*vidioc_decoder_cmd)(struct file *file, void *fh,
 515                                   struct v4l2_decoder_cmd *a);
 516         int (*vidioc_try_decoder_cmd)(struct file *file, void *fh,
 517                                       struct v4l2_decoder_cmd *a);
 518
 519         /* Stream type-dependent parameter ioctls */
 520         int (*vidioc_g_parm)(struct file *file, void *fh,
 521                              struct v4l2_streamparm *a);
 522         int (*vidioc_s_parm)(struct file *file, void *fh,
 523                              struct v4l2_streamparm *a);
 524
 525         /* Tuner ioctls */
 526         int (*vidioc_g_tuner)(struct file *file, void *fh,
 527                               struct v4l2_tuner *a);
 528         int (*vidioc_s_tuner)(struct file *file, void *fh,
 529                               const struct v4l2_tuner *a);
 530         int (*vidioc_g_frequency)(struct file *file, void *fh,
 531                                   struct v4l2_frequency *a);
 532         int (*vidioc_s_frequency)(struct file *file, void *fh,
 533                                   const struct v4l2_frequency *a);
 534         int (*vidioc_enum_freq_bands)(struct file *file, void *fh,
 535                                       struct v4l2_frequency_band *band);
 536
 537         /* Sliced VBI cap */
 538         int (*vidioc_g_sliced_vbi_cap)(struct file *file, void *fh,
 539                                        struct v4l2_sliced_vbi_cap *a);
 540
 541         /* Log status ioctl */
 542         int (*vidioc_log_status)(struct file *file, void *fh);
 543
 544         int (*vidioc_s_hw_freq_seek)(struct file *file, void *fh,
 545                                      const struct v4l2_hw_freq_seek *a);
 546
 547         /* Debugging ioctls */
 548 #ifdef CONFIG_VIDEO_ADV_DEBUG
 549         int (*vidioc_g_register)(struct file *file, void *fh,
 550                                  struct v4l2_dbg_register *reg);
 551         int (*vidioc_s_register)(struct file *file, void *fh,
 552                                  const struct v4l2_dbg_register *reg);
 553
 554         int (*vidioc_g_chip_info)(struct file *file, void *fh,
 555                                   struct v4l2_dbg_chip_info *chip);
 556 #endif
 557
 558         int (*vidioc_enum_framesizes)(struct file *file, void *fh,
 559                                       struct v4l2_frmsizeenum *fsize);
 560
 561         int (*vidioc_enum_frameintervals)(struct file *file, void *fh,
 562                                           struct v4l2_frmivalenum *fival);
 563
 564         /* DV Timings IOCTLs */
 565         int (*vidioc_s_dv_timings)(struct file *file, void *fh,
 566                                    struct v4l2_dv_timings *timings);
 567         int (*vidioc_g_dv_timings)(struct file *file, void *fh,
 568                                    struct v4l2_dv_timings *timings);
 569         int (*vidioc_query_dv_timings)(struct file *file, void *fh,
 570                                        struct v4l2_dv_timings *timings);
 571         int (*vidioc_enum_dv_timings)(struct file *file, void *fh,
 572                                       struct v4l2_enum_dv_timings *timings);
 573         int (*vidioc_dv_timings_cap)(struct file *file, void *fh,
 574                                      struct v4l2_dv_timings_cap *cap);
 575         int (*vidioc_g_edid)(struct file *file, void *fh,
 576                              struct v4l2_edid *edid);
 577         int (*vidioc_s_edid)(struct file *file, void *fh,
 578                              struct v4l2_edid *edid);
 579
 580         int (*vidioc_subscribe_event)(struct v4l2_fh *fh,
 581                                       const struct v4l2_event_subscription *sub);
 582         int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh,
 583                                         const struct v4l2_event_subscription *sub);
 584
 585         /* For other private ioctls */
 586         long (*vidioc_default)(struct file *file, void *fh,
 587                                bool valid_prio, unsigned int cmd, void *arg);
 588 };
 589
 590
 591 /* v4l debugging and diagnostics */
 592
 593 /* Device debug flags to be used with the video device debug attribute */
 594
 595 /* Just log the ioctl name + error code */
 596 #define V4L2_DEV_DEBUG_IOCTL            0x01
 597 /* Log the ioctl name arguments + error code */
 598 #define V4L2_DEV_DEBUG_IOCTL_ARG        0x02
 599 /* Log the file operations open, release, mmap and get_unmapped_area */
 600 #define V4L2_DEV_DEBUG_FOP              0x04
 601 /* Log the read and write file operations and the VIDIOC_(D)QBUF ioctls */
 602 #define V4L2_DEV_DEBUG_STREAMING        0x08
 603 /* Log poll() */
 604 #define V4L2_DEV_DEBUG_POLL             0x10
 605
 606 /*  Video standard functions  */
 607
 608 /**
 609  * v4l2_norm_to_name - Ancillary routine to analog TV standard name from its ID.
 610  *
 611  * @id: analog TV standard ID.
 612  *
 613  * Return: returns a string with the name of the analog TV standard.
 614  * If the standard is not found or if @id points to multiple standard,
 615  * it returns "Unknown".
 616  */
 617 const char *v4l2_norm_to_name(v4l2_std_id id);
 618
 619 /**
 620  * v4l2_video_std_frame_period - Ancillary routine that fills a
 621  *      struct &v4l2_fract pointer with the default framerate fraction.
 622  *
 623  * @id: analog TV sdandard ID.
 624  * @frameperiod: struct &v4l2_fract pointer to be filled
 625  *
 626  */
 627 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod);
 628
 629 /**
 630  * v4l2_video_std_construct - Ancillary routine that fills in the fields of
 631  *      a &v4l2_standard structure according to the @id parameter.
 632  *
 633  * @vs: struct &v4l2_standard pointer to be filled
 634  * @id: analog TV sdandard ID.
 635  * @name: name of the standard to be used
 636  *
 637  * .. note::
 638  *
 639  *    This ancillary routine is obsolete. Shouldn't be used on newer drivers.
 640  */
 641 int v4l2_video_std_construct(struct v4l2_standard *vs,
 642                                     int id, const char *name);
 643
 644 /**
 645  * v4l_printk_ioctl - Ancillary routine that prints the ioctl in a
 646  *      human-readable format.
 647  *
 648  * @prefix: prefix to be added at the ioctl prints.
 649  * @cmd: ioctl name
 650  *
 651  * .. note::
 652  *
 653  *    If prefix != %NULL, then it will issue a
 654  *    ``printk(KERN_DEBUG "%s: ", prefix)`` first.
 655  */
 656 void v4l_printk_ioctl(const char *prefix, unsigned int cmd);
 657
 658 struct video_device;
 659
 660
 661 /**
 662  * v4l2_ioctl_get_lock - get the mutex (if any) that it is need to lock for
 663  *      a given command.
 664  *
 665  * @vdev: Pointer to struct &video_device.
 666  * @cmd: Ioctl name.
 667  *
 668  * .. note:: Internal use only. Should not be used outside V4L2 core.
 669  */
 670 struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned int cmd);
 671
 672 /* names for fancy debug output */
 673 extern const char *v4l2_field_names[];
 674 extern const char *v4l2_type_names[];
 675
 676 #ifdef CONFIG_COMPAT
 677 /**
 678  * v4l2_compat_ioctl32 -32 Bits compatibility layer for 64 bits processors
 679  *
 680  * @file: Pointer to struct &file.
 681  * @cmd: Ioctl name.
 682  * @arg: Ioctl argument.
 683  */
 684 long int v4l2_compat_ioctl32(struct file *file, unsigned int cmd,
 685                              unsigned long arg);
 686 #endif
 687
 688 /**
 689  * typedef v4l2_kioctl - Typedef used to pass an ioctl handler.
 690  *
 691  * @file: Pointer to struct &file.
 692  * @cmd: Ioctl name.
 693  * @arg: Ioctl argument.
 694  */
 695 typedef long (*v4l2_kioctl)(struct file *file, unsigned int cmd, void *arg);
 696
 697 /**
 698  * video_usercopy - copies data from/to userspace memory when an ioctl is
 699  *      issued.
 700  *
 701  * @file: Pointer to struct &file.
 702  * @cmd: Ioctl name.
 703  * @arg: Ioctl argument.
 704  * @func: function that will handle the ioctl
 705  *
 706  * .. note::
 707  *
 708  *    This routine should be used only inside the V4L2 core.
 709  */
 710 long int video_usercopy(struct file *file, unsigned int cmd,
 711                         unsigned long int arg, v4l2_kioctl func);
 712
 713 /**
 714  * video_ioctl2 - Handles a V4L2 ioctl.
 715  *
 716  * @file: Pointer to struct &file.
 717  * @cmd: Ioctl name.
 718  * @arg: Ioctl argument.
 719  *
 720  * Method used to hancle an ioctl. Should be used to fill the
 721  * &v4l2_ioctl_ops.unlocked_ioctl on all V4L2 drivers.
 722  */
 723 long int video_ioctl2(struct file *file,
 724                       unsigned int cmd, unsigned long int arg);
 725
 726 #endif /* _V4L2_IOCTL_H */