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_dqbuf) (struct file *file, void *fh, struct v4l2_buffer *b); 115 116 int (*vidioc_create_bufs)(struct file *file, void *fh, struct v4l2_create_buffers *b); 117 int (*vidioc_prepare_buf)(struct file *file, void *fh, struct v4l2_buffer *b); 118 119 int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i); 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 const 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 const 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 const 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 const 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 const struct v4l2_crop *a); 190 int (*vidioc_g_selection) (struct file *file, void *fh, 191 struct v4l2_selection *s); 192 int (*vidioc_s_selection) (struct file *file, void *fh, 193 struct v4l2_selection *s); 194 /* Compression ioctls */ 195 int (*vidioc_g_jpegcomp) (struct file *file, void *fh, 196 struct v4l2_jpegcompression *a); 197 int (*vidioc_s_jpegcomp) (struct file *file, void *fh, 198 const struct v4l2_jpegcompression *a); 199 int (*vidioc_g_enc_index) (struct file *file, void *fh, 200 struct v4l2_enc_idx *a); 201 int (*vidioc_encoder_cmd) (struct file *file, void *fh, 202 struct v4l2_encoder_cmd *a); 203 int (*vidioc_try_encoder_cmd) (struct file *file, void *fh, 204 struct v4l2_encoder_cmd *a); 205 int (*vidioc_decoder_cmd) (struct file *file, void *fh, 206 struct v4l2_decoder_cmd *a); 207 int (*vidioc_try_decoder_cmd) (struct file *file, void *fh, 208 struct v4l2_decoder_cmd *a); 209 210 /* Stream type-dependent parameter ioctls */ 211 int (*vidioc_g_parm) (struct file *file, void *fh, 212 struct v4l2_streamparm *a); 213 int (*vidioc_s_parm) (struct file *file, void *fh, 214 struct v4l2_streamparm *a); 215 216 /* Tuner ioctls */ 217 int (*vidioc_g_tuner) (struct file *file, void *fh, 218 struct v4l2_tuner *a); 219 int (*vidioc_s_tuner) (struct file *file, void *fh, 220 struct v4l2_tuner *a); 221 int (*vidioc_g_frequency) (struct file *file, void *fh, 222 struct v4l2_frequency *a); 223 int (*vidioc_s_frequency) (struct file *file, void *fh, 224 struct v4l2_frequency *a); 225 int (*vidioc_enum_freq_bands) (struct file *file, void *fh, 226 struct v4l2_frequency_band *band); 227 228 /* Sliced VBI cap */ 229 int (*vidioc_g_sliced_vbi_cap) (struct file *file, void *fh, 230 struct v4l2_sliced_vbi_cap *a); 231 232 /* Log status ioctl */ 233 int (*vidioc_log_status) (struct file *file, void *fh); 234 235 int (*vidioc_s_hw_freq_seek) (struct file *file, void *fh, 236 const struct v4l2_hw_freq_seek *a); 237 238 /* Debugging ioctls */ 239 #ifdef CONFIG_VIDEO_ADV_DEBUG 240 int (*vidioc_g_register) (struct file *file, void *fh, 241 struct v4l2_dbg_register *reg); 242 int (*vidioc_s_register) (struct file *file, void *fh, 243 struct v4l2_dbg_register *reg); 244 #endif 245 int (*vidioc_g_chip_ident) (struct file *file, void *fh, 246 struct v4l2_dbg_chip_ident *chip); 247 248 int (*vidioc_enum_framesizes) (struct file *file, void *fh, 249 struct v4l2_frmsizeenum *fsize); 250 251 int (*vidioc_enum_frameintervals) (struct file *file, void *fh, 252 struct v4l2_frmivalenum *fival); 253 254 /* DV Timings IOCTLs */ 255 int (*vidioc_enum_dv_presets) (struct file *file, void *fh, 256 struct v4l2_dv_enum_preset *preset); 257 258 int (*vidioc_s_dv_preset) (struct file *file, void *fh, 259 struct v4l2_dv_preset *preset); 260 int (*vidioc_g_dv_preset) (struct file *file, void *fh, 261 struct v4l2_dv_preset *preset); 262 int (*vidioc_query_dv_preset) (struct file *file, void *fh, 263 struct v4l2_dv_preset *qpreset); 264 int (*vidioc_s_dv_timings) (struct file *file, void *fh, 265 struct v4l2_dv_timings *timings); 266 int (*vidioc_g_dv_timings) (struct file *file, void *fh, 267 struct v4l2_dv_timings *timings); 268 int (*vidioc_query_dv_timings) (struct file *file, void *fh, 269 struct v4l2_dv_timings *timings); 270 int (*vidioc_enum_dv_timings) (struct file *file, void *fh, 271 struct v4l2_enum_dv_timings *timings); 272 int (*vidioc_dv_timings_cap) (struct file *file, void *fh, 273 struct v4l2_dv_timings_cap *cap); 274 275 int (*vidioc_subscribe_event) (struct v4l2_fh *fh, 276 const struct v4l2_event_subscription *sub); 277 int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh, 278 const struct v4l2_event_subscription *sub); 279 280 /* For other private ioctls */ 281 long (*vidioc_default) (struct file *file, void *fh, 282 bool valid_prio, int cmd, void *arg); 283 }; 284 285 286 /* v4l debugging and diagnostics */ 287 288 /* Debug bitmask flags to be used on V4L2 */ 289 #define V4L2_DEBUG_IOCTL 0x01 290 #define V4L2_DEBUG_IOCTL_ARG 0x02 291 292 /* Video standard functions */ 293 extern const char *v4l2_norm_to_name(v4l2_std_id id); 294 extern void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod); 295 extern int v4l2_video_std_construct(struct v4l2_standard *vs, 296 int id, const char *name); 297 /* Prints the ioctl in a human-readable format. If prefix != NULL, 298 then do printk(KERN_DEBUG "%s: ", prefix) first. */ 299 extern void v4l_printk_ioctl(const char *prefix, unsigned int cmd); 300 301 /* Internal use only: get the mutex (if any) that we need to lock for the 302 given command. */ 303 struct video_device; 304 extern struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd); 305 306 /* names for fancy debug output */ 307 extern const char *v4l2_field_names[]; 308 extern const char *v4l2_type_names[]; 309 310 #ifdef CONFIG_COMPAT 311 /* 32 Bits compatibility layer for 64 bits processors */ 312 extern long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, 313 unsigned long arg); 314 #endif 315 316 typedef long (*v4l2_kioctl)(struct file *file, 317 unsigned int cmd, void *arg); 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 */ 328