| 1 | /* |
| 2 | * |
| 3 | * V 4 L 2 D R I V E R H E L P E R A P I |
| 4 | * |
| 5 | * Moved from videodev2.h |
| 6 | * |
| 7 | * Some commonly needed functions for drivers (v4l2-common.o module) |
| 8 | */ |
| 9 | #ifndef _V4L2_IOCTL_H |
| 10 | #define _V4L2_IOCTL_H |
| 11 | |
| 12 | #include <linux/poll.h> |
| 13 | #include <linux/fs.h> |
| 14 | #include <linux/mutex.h> |
| 15 | #include <linux/compiler.h> /* need __user */ |
| 16 | #include <linux/videodev2.h> |
| 17 | |
| 18 | struct v4l2_fh; |
| 19 | |
| 20 | struct v4l2_ioctl_ops { |
| 21 | /* ioctl callbacks */ |
| 22 | |
| 23 | /* VIDIOC_QUERYCAP handler */ |
| 24 | int (*vidioc_querycap)(struct file *file, void *fh, struct v4l2_capability *cap); |
| 25 | |
| 26 | /* Priority handling */ |
| 27 | int (*vidioc_g_priority) (struct file *file, void *fh, |
| 28 | enum v4l2_priority *p); |
| 29 | int (*vidioc_s_priority) (struct file *file, void *fh, |
| 30 | enum v4l2_priority p); |
| 31 | |
| 32 | /* VIDIOC_ENUM_FMT handlers */ |
| 33 | int (*vidioc_enum_fmt_vid_cap) (struct file *file, void *fh, |
| 34 | struct v4l2_fmtdesc *f); |
| 35 | int (*vidioc_enum_fmt_vid_overlay) (struct file *file, void *fh, |
| 36 | struct v4l2_fmtdesc *f); |
| 37 | int (*vidioc_enum_fmt_vid_out) (struct file *file, void *fh, |
| 38 | struct v4l2_fmtdesc *f); |
| 39 | int (*vidioc_enum_fmt_vid_cap_mplane)(struct file *file, void *fh, |
| 40 | struct v4l2_fmtdesc *f); |
| 41 | int (*vidioc_enum_fmt_vid_out_mplane)(struct file *file, void *fh, |
| 42 | struct v4l2_fmtdesc *f); |
| 43 | |
| 44 | /* VIDIOC_G_FMT handlers */ |
| 45 | int (*vidioc_g_fmt_vid_cap) (struct file *file, void *fh, |
| 46 | struct v4l2_format *f); |
| 47 | int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh, |
| 48 | struct v4l2_format *f); |
| 49 | int (*vidioc_g_fmt_vid_out) (struct file *file, void *fh, |
| 50 | struct v4l2_format *f); |
| 51 | int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh, |
| 52 | struct v4l2_format *f); |
| 53 | int (*vidioc_g_fmt_vbi_cap) (struct file *file, void *fh, |
| 54 | struct v4l2_format *f); |
| 55 | int (*vidioc_g_fmt_vbi_out) (struct file *file, void *fh, |
| 56 | struct v4l2_format *f); |
| 57 | int (*vidioc_g_fmt_sliced_vbi_cap)(struct file *file, void *fh, |
| 58 | struct v4l2_format *f); |
| 59 | int (*vidioc_g_fmt_sliced_vbi_out)(struct file *file, void *fh, |
| 60 | struct v4l2_format *f); |
| 61 | int (*vidioc_g_fmt_vid_cap_mplane)(struct file *file, void *fh, |
| 62 | struct v4l2_format *f); |
| 63 | int (*vidioc_g_fmt_vid_out_mplane)(struct file *file, void *fh, |
| 64 | struct v4l2_format *f); |
| 65 | |
| 66 | /* VIDIOC_S_FMT handlers */ |
| 67 | int (*vidioc_s_fmt_vid_cap) (struct file *file, void *fh, |
| 68 | struct v4l2_format *f); |
| 69 | int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh, |
| 70 | struct v4l2_format *f); |
| 71 | int (*vidioc_s_fmt_vid_out) (struct file *file, void *fh, |
| 72 | struct v4l2_format *f); |
| 73 | int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh, |
| 74 | struct v4l2_format *f); |
| 75 | int (*vidioc_s_fmt_vbi_cap) (struct file *file, void *fh, |
| 76 | struct v4l2_format *f); |
| 77 | int (*vidioc_s_fmt_vbi_out) (struct file *file, void *fh, |
| 78 | struct v4l2_format *f); |
| 79 | int (*vidioc_s_fmt_sliced_vbi_cap)(struct file *file, void *fh, |
| 80 | struct v4l2_format *f); |
| 81 | int (*vidioc_s_fmt_sliced_vbi_out)(struct file *file, void *fh, |
| 82 | struct v4l2_format *f); |
| 83 | int (*vidioc_s_fmt_vid_cap_mplane)(struct file *file, void *fh, |
| 84 | struct v4l2_format *f); |
| 85 | int (*vidioc_s_fmt_vid_out_mplane)(struct file *file, void *fh, |
| 86 | struct v4l2_format *f); |
| 87 | |
| 88 | /* VIDIOC_TRY_FMT handlers */ |
| 89 | int (*vidioc_try_fmt_vid_cap) (struct file *file, void *fh, |
| 90 | struct v4l2_format *f); |
| 91 | int (*vidioc_try_fmt_vid_overlay)(struct file *file, void *fh, |
| 92 | struct v4l2_format *f); |
| 93 | int (*vidioc_try_fmt_vid_out) (struct file *file, void *fh, |
| 94 | struct v4l2_format *f); |
| 95 | int (*vidioc_try_fmt_vid_out_overlay)(struct file *file, void *fh, |
| 96 | struct v4l2_format *f); |
| 97 | int (*vidioc_try_fmt_vbi_cap) (struct file *file, void *fh, |
| 98 | struct v4l2_format *f); |
| 99 | int (*vidioc_try_fmt_vbi_out) (struct file *file, void *fh, |
| 100 | struct v4l2_format *f); |
| 101 | int (*vidioc_try_fmt_sliced_vbi_cap)(struct file *file, void *fh, |
| 102 | struct v4l2_format *f); |
| 103 | int (*vidioc_try_fmt_sliced_vbi_out)(struct file *file, void *fh, |
| 104 | struct v4l2_format *f); |
| 105 | int (*vidioc_try_fmt_vid_cap_mplane)(struct file *file, void *fh, |
| 106 | struct v4l2_format *f); |
| 107 | int (*vidioc_try_fmt_vid_out_mplane)(struct file *file, void *fh, |
| 108 | struct v4l2_format *f); |
| 109 | |
| 110 | /* Buffer handlers */ |
| 111 | int (*vidioc_reqbufs) (struct file *file, void *fh, struct v4l2_requestbuffers *b); |
| 112 | int (*vidioc_querybuf)(struct file *file, void *fh, struct v4l2_buffer *b); |
| 113 | int (*vidioc_qbuf) (struct file *file, void *fh, struct v4l2_buffer *b); |
| 114 | int (*vidioc_expbuf) (struct file *file, void *fh, |
| 115 | struct v4l2_exportbuffer *e); |
| 116 | int (*vidioc_dqbuf) (struct file *file, void *fh, struct v4l2_buffer *b); |
| 117 | |
| 118 | int (*vidioc_create_bufs)(struct file *file, void *fh, struct v4l2_create_buffers *b); |
| 119 | int (*vidioc_prepare_buf)(struct file *file, void *fh, struct v4l2_buffer *b); |
| 120 | |
| 121 | int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i); |
| 122 | int (*vidioc_g_fbuf) (struct file *file, void *fh, |
| 123 | struct v4l2_framebuffer *a); |
| 124 | int (*vidioc_s_fbuf) (struct file *file, void *fh, |
| 125 | const struct v4l2_framebuffer *a); |
| 126 | |
| 127 | /* Stream on/off */ |
| 128 | int (*vidioc_streamon) (struct file *file, void *fh, enum v4l2_buf_type i); |
| 129 | int (*vidioc_streamoff)(struct file *file, void *fh, enum v4l2_buf_type i); |
| 130 | |
| 131 | /* Standard handling |
| 132 | ENUMSTD is handled by videodev.c |
| 133 | */ |
| 134 | int (*vidioc_g_std) (struct file *file, void *fh, v4l2_std_id *norm); |
| 135 | int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id norm); |
| 136 | int (*vidioc_querystd) (struct file *file, void *fh, v4l2_std_id *a); |
| 137 | |
| 138 | /* Input handling */ |
| 139 | int (*vidioc_enum_input)(struct file *file, void *fh, |
| 140 | struct v4l2_input *inp); |
| 141 | int (*vidioc_g_input) (struct file *file, void *fh, unsigned int *i); |
| 142 | int (*vidioc_s_input) (struct file *file, void *fh, unsigned int i); |
| 143 | |
| 144 | /* Output handling */ |
| 145 | int (*vidioc_enum_output) (struct file *file, void *fh, |
| 146 | struct v4l2_output *a); |
| 147 | int (*vidioc_g_output) (struct file *file, void *fh, unsigned int *i); |
| 148 | int (*vidioc_s_output) (struct file *file, void *fh, unsigned int i); |
| 149 | |
| 150 | /* Control handling */ |
| 151 | int (*vidioc_queryctrl) (struct file *file, void *fh, |
| 152 | struct v4l2_queryctrl *a); |
| 153 | int (*vidioc_g_ctrl) (struct file *file, void *fh, |
| 154 | struct v4l2_control *a); |
| 155 | int (*vidioc_s_ctrl) (struct file *file, void *fh, |
| 156 | struct v4l2_control *a); |
| 157 | int (*vidioc_g_ext_ctrls) (struct file *file, void *fh, |
| 158 | struct v4l2_ext_controls *a); |
| 159 | int (*vidioc_s_ext_ctrls) (struct file *file, void *fh, |
| 160 | struct v4l2_ext_controls *a); |
| 161 | int (*vidioc_try_ext_ctrls) (struct file *file, void *fh, |
| 162 | struct v4l2_ext_controls *a); |
| 163 | int (*vidioc_querymenu) (struct file *file, void *fh, |
| 164 | struct v4l2_querymenu *a); |
| 165 | |
| 166 | /* Audio ioctls */ |
| 167 | int (*vidioc_enumaudio) (struct file *file, void *fh, |
| 168 | struct v4l2_audio *a); |
| 169 | int (*vidioc_g_audio) (struct file *file, void *fh, |
| 170 | struct v4l2_audio *a); |
| 171 | int (*vidioc_s_audio) (struct file *file, void *fh, |
| 172 | const struct v4l2_audio *a); |
| 173 | |
| 174 | /* Audio out ioctls */ |
| 175 | int (*vidioc_enumaudout) (struct file *file, void *fh, |
| 176 | struct v4l2_audioout *a); |
| 177 | int (*vidioc_g_audout) (struct file *file, void *fh, |
| 178 | struct v4l2_audioout *a); |
| 179 | int (*vidioc_s_audout) (struct file *file, void *fh, |
| 180 | const struct v4l2_audioout *a); |
| 181 | int (*vidioc_g_modulator) (struct file *file, void *fh, |
| 182 | struct v4l2_modulator *a); |
| 183 | int (*vidioc_s_modulator) (struct file *file, void *fh, |
| 184 | const struct v4l2_modulator *a); |
| 185 | /* Crop ioctls */ |
| 186 | int (*vidioc_cropcap) (struct file *file, void *fh, |
| 187 | struct v4l2_cropcap *a); |
| 188 | int (*vidioc_g_crop) (struct file *file, void *fh, |
| 189 | struct v4l2_crop *a); |
| 190 | int (*vidioc_s_crop) (struct file *file, void *fh, |
| 191 | const struct v4l2_crop *a); |
| 192 | int (*vidioc_g_selection) (struct file *file, void *fh, |
| 193 | struct v4l2_selection *s); |
| 194 | int (*vidioc_s_selection) (struct file *file, void *fh, |
| 195 | struct v4l2_selection *s); |
| 196 | /* Compression ioctls */ |
| 197 | int (*vidioc_g_jpegcomp) (struct file *file, void *fh, |
| 198 | struct v4l2_jpegcompression *a); |
| 199 | int (*vidioc_s_jpegcomp) (struct file *file, void *fh, |
| 200 | const struct v4l2_jpegcompression *a); |
| 201 | int (*vidioc_g_enc_index) (struct file *file, void *fh, |
| 202 | struct v4l2_enc_idx *a); |
| 203 | int (*vidioc_encoder_cmd) (struct file *file, void *fh, |
| 204 | struct v4l2_encoder_cmd *a); |
| 205 | int (*vidioc_try_encoder_cmd) (struct file *file, void *fh, |
| 206 | struct v4l2_encoder_cmd *a); |
| 207 | int (*vidioc_decoder_cmd) (struct file *file, void *fh, |
| 208 | struct v4l2_decoder_cmd *a); |
| 209 | int (*vidioc_try_decoder_cmd) (struct file *file, void *fh, |
| 210 | struct v4l2_decoder_cmd *a); |
| 211 | |
| 212 | /* Stream type-dependent parameter ioctls */ |
| 213 | int (*vidioc_g_parm) (struct file *file, void *fh, |
| 214 | struct v4l2_streamparm *a); |
| 215 | int (*vidioc_s_parm) (struct file *file, void *fh, |
| 216 | struct v4l2_streamparm *a); |
| 217 | |
| 218 | /* Tuner ioctls */ |
| 219 | int (*vidioc_g_tuner) (struct file *file, void *fh, |
| 220 | struct v4l2_tuner *a); |
| 221 | int (*vidioc_s_tuner) (struct file *file, void *fh, |
| 222 | const struct v4l2_tuner *a); |
| 223 | int (*vidioc_g_frequency) (struct file *file, void *fh, |
| 224 | struct v4l2_frequency *a); |
| 225 | int (*vidioc_s_frequency) (struct file *file, void *fh, |
| 226 | const struct v4l2_frequency *a); |
| 227 | int (*vidioc_enum_freq_bands) (struct file *file, void *fh, |
| 228 | struct v4l2_frequency_band *band); |
| 229 | |
| 230 | /* Sliced VBI cap */ |
| 231 | int (*vidioc_g_sliced_vbi_cap) (struct file *file, void *fh, |
| 232 | struct v4l2_sliced_vbi_cap *a); |
| 233 | |
| 234 | /* Log status ioctl */ |
| 235 | int (*vidioc_log_status) (struct file *file, void *fh); |
| 236 | |
| 237 | int (*vidioc_s_hw_freq_seek) (struct file *file, void *fh, |
| 238 | const struct v4l2_hw_freq_seek *a); |
| 239 | |
| 240 | /* Debugging ioctls */ |
| 241 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 242 | int (*vidioc_g_register) (struct file *file, void *fh, |
| 243 | struct v4l2_dbg_register *reg); |
| 244 | int (*vidioc_s_register) (struct file *file, void *fh, |
| 245 | const struct v4l2_dbg_register *reg); |
| 246 | |
| 247 | int (*vidioc_g_chip_info) (struct file *file, void *fh, |
| 248 | struct v4l2_dbg_chip_info *chip); |
| 249 | #endif |
| 250 | int (*vidioc_g_chip_ident) (struct file *file, void *fh, |
| 251 | struct v4l2_dbg_chip_ident *chip); |
| 252 | |
| 253 | int (*vidioc_enum_framesizes) (struct file *file, void *fh, |
| 254 | struct v4l2_frmsizeenum *fsize); |
| 255 | |
| 256 | int (*vidioc_enum_frameintervals) (struct file *file, void *fh, |
| 257 | struct v4l2_frmivalenum *fival); |
| 258 | |
| 259 | /* DV Timings IOCTLs */ |
| 260 | int (*vidioc_s_dv_timings) (struct file *file, void *fh, |
| 261 | struct v4l2_dv_timings *timings); |
| 262 | int (*vidioc_g_dv_timings) (struct file *file, void *fh, |
| 263 | struct v4l2_dv_timings *timings); |
| 264 | int (*vidioc_query_dv_timings) (struct file *file, void *fh, |
| 265 | struct v4l2_dv_timings *timings); |
| 266 | int (*vidioc_enum_dv_timings) (struct file *file, void *fh, |
| 267 | struct v4l2_enum_dv_timings *timings); |
| 268 | int (*vidioc_dv_timings_cap) (struct file *file, void *fh, |
| 269 | struct v4l2_dv_timings_cap *cap); |
| 270 | |
| 271 | int (*vidioc_subscribe_event) (struct v4l2_fh *fh, |
| 272 | const struct v4l2_event_subscription *sub); |
| 273 | int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh, |
| 274 | const struct v4l2_event_subscription *sub); |
| 275 | |
| 276 | /* For other private ioctls */ |
| 277 | long (*vidioc_default) (struct file *file, void *fh, |
| 278 | bool valid_prio, unsigned int cmd, void *arg); |
| 279 | }; |
| 280 | |
| 281 | |
| 282 | /* v4l debugging and diagnostics */ |
| 283 | |
| 284 | /* Debug bitmask flags to be used on V4L2 */ |
| 285 | #define V4L2_DEBUG_IOCTL 0x01 |
| 286 | #define V4L2_DEBUG_IOCTL_ARG 0x02 |
| 287 | |
| 288 | /* Video standard functions */ |
| 289 | extern const char *v4l2_norm_to_name(v4l2_std_id id); |
| 290 | extern void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod); |
| 291 | extern int v4l2_video_std_construct(struct v4l2_standard *vs, |
| 292 | int id, const char *name); |
| 293 | /* Prints the ioctl in a human-readable format. If prefix != NULL, |
| 294 | then do printk(KERN_DEBUG "%s: ", prefix) first. */ |
| 295 | extern void v4l_printk_ioctl(const char *prefix, unsigned int cmd); |
| 296 | |
| 297 | /* Internal use only: get the mutex (if any) that we need to lock for the |
| 298 | given command. */ |
| 299 | struct video_device; |
| 300 | extern struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd); |
| 301 | |
| 302 | /* names for fancy debug output */ |
| 303 | extern const char *v4l2_field_names[]; |
| 304 | extern const char *v4l2_type_names[]; |
| 305 | |
| 306 | #ifdef CONFIG_COMPAT |
| 307 | /* 32 Bits compatibility layer for 64 bits processors */ |
| 308 | extern long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, |
| 309 | unsigned long arg); |
| 310 | #endif |
| 311 | |
| 312 | typedef long (*v4l2_kioctl)(struct file *file, |
| 313 | unsigned int cmd, void *arg); |
| 314 | |
| 315 | /* Include support for obsoleted stuff */ |
| 316 | extern long video_usercopy(struct file *file, unsigned int cmd, |
| 317 | unsigned long arg, v4l2_kioctl func); |
| 318 | |
| 319 | /* Standard handlers for V4L ioctl's */ |
| 320 | extern long video_ioctl2(struct file *file, |
| 321 | unsigned int cmd, unsigned long arg); |
| 322 | |
| 323 | #endif /* _V4L2_IOCTL_H */ |