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 int (*vidioc_enum_fmt_type_private)(struct file *file, void *fh, 44 struct v4l2_fmtdesc *f); 45 46 /* VIDIOC_G_FMT handlers */ 47 int (*vidioc_g_fmt_vid_cap) (struct file *file, void *fh, 48 struct v4l2_format *f); 49 int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh, 50 struct v4l2_format *f); 51 int (*vidioc_g_fmt_vid_out) (struct file *file, void *fh, 52 struct v4l2_format *f); 53 int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh, 54 struct v4l2_format *f); 55 int (*vidioc_g_fmt_vbi_cap) (struct file *file, void *fh, 56 struct v4l2_format *f); 57 int (*vidioc_g_fmt_vbi_out) (struct file *file, void *fh, 58 struct v4l2_format *f); 59 int (*vidioc_g_fmt_sliced_vbi_cap)(struct file *file, void *fh, 60 struct v4l2_format *f); 61 int (*vidioc_g_fmt_sliced_vbi_out)(struct file *file, void *fh, 62 struct v4l2_format *f); 63 int (*vidioc_g_fmt_vid_cap_mplane)(struct file *file, void *fh, 64 struct v4l2_format *f); 65 int (*vidioc_g_fmt_vid_out_mplane)(struct file *file, void *fh, 66 struct v4l2_format *f); 67 int (*vidioc_g_fmt_type_private)(struct file *file, void *fh, 68 struct v4l2_format *f); 69 70 /* VIDIOC_S_FMT handlers */ 71 int (*vidioc_s_fmt_vid_cap) (struct file *file, void *fh, 72 struct v4l2_format *f); 73 int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh, 74 struct v4l2_format *f); 75 int (*vidioc_s_fmt_vid_out) (struct file *file, void *fh, 76 struct v4l2_format *f); 77 int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh, 78 struct v4l2_format *f); 79 int (*vidioc_s_fmt_vbi_cap) (struct file *file, void *fh, 80 struct v4l2_format *f); 81 int (*vidioc_s_fmt_vbi_out) (struct file *file, void *fh, 82 struct v4l2_format *f); 83 int (*vidioc_s_fmt_sliced_vbi_cap)(struct file *file, void *fh, 84 struct v4l2_format *f); 85 int (*vidioc_s_fmt_sliced_vbi_out)(struct file *file, void *fh, 86 struct v4l2_format *f); 87 int (*vidioc_s_fmt_vid_cap_mplane)(struct file *file, void *fh, 88 struct v4l2_format *f); 89 int (*vidioc_s_fmt_vid_out_mplane)(struct file *file, void *fh, 90 struct v4l2_format *f); 91 int (*vidioc_s_fmt_type_private)(struct file *file, void *fh, 92 struct v4l2_format *f); 93 94 /* VIDIOC_TRY_FMT handlers */ 95 int (*vidioc_try_fmt_vid_cap) (struct file *file, void *fh, 96 struct v4l2_format *f); 97 int (*vidioc_try_fmt_vid_overlay)(struct file *file, void *fh, 98 struct v4l2_format *f); 99 int (*vidioc_try_fmt_vid_out) (struct file *file, void *fh, 100 struct v4l2_format *f); 101 int (*vidioc_try_fmt_vid_out_overlay)(struct file *file, void *fh, 102 struct v4l2_format *f); 103 int (*vidioc_try_fmt_vbi_cap) (struct file *file, void *fh, 104 struct v4l2_format *f); 105 int (*vidioc_try_fmt_vbi_out) (struct file *file, void *fh, 106 struct v4l2_format *f); 107 int (*vidioc_try_fmt_sliced_vbi_cap)(struct file *file, void *fh, 108 struct v4l2_format *f); 109 int (*vidioc_try_fmt_sliced_vbi_out)(struct file *file, void *fh, 110 struct v4l2_format *f); 111 int (*vidioc_try_fmt_vid_cap_mplane)(struct file *file, void *fh, 112 struct v4l2_format *f); 113 int (*vidioc_try_fmt_vid_out_mplane)(struct file *file, void *fh, 114 struct v4l2_format *f); 115 int (*vidioc_try_fmt_type_private)(struct file *file, void *fh, 116 struct v4l2_format *f); 117 118 /* Buffer handlers */ 119 int (*vidioc_reqbufs) (struct file *file, void *fh, struct v4l2_requestbuffers *b); 120 int (*vidioc_querybuf)(struct file *file, void *fh, struct v4l2_buffer *b); 121 int (*vidioc_qbuf) (struct file *file, void *fh, struct v4l2_buffer *b); 122 int (*vidioc_dqbuf) (struct file *file, void *fh, struct v4l2_buffer *b); 123 124 int (*vidioc_create_bufs)(struct file *file, void *fh, struct v4l2_create_buffers *b); 125 int (*vidioc_prepare_buf)(struct file *file, void *fh, struct v4l2_buffer *b); 126 127 int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i); 128 int (*vidioc_g_fbuf) (struct file *file, void *fh, 129 struct v4l2_framebuffer *a); 130 int (*vidioc_s_fbuf) (struct file *file, void *fh, 131 struct v4l2_framebuffer *a); 132 133 /* Stream on/off */ 134 int (*vidioc_streamon) (struct file *file, void *fh, enum v4l2_buf_type i); 135 int (*vidioc_streamoff)(struct file *file, void *fh, enum v4l2_buf_type i); 136 137 /* Standard handling 138 ENUMSTD is handled by videodev.c 139 */ 140 int (*vidioc_g_std) (struct file *file, void *fh, v4l2_std_id *norm); 141 int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id *norm); 142 int (*vidioc_querystd) (struct file *file, void *fh, v4l2_std_id *a); 143 144 /* Input handling */ 145 int (*vidioc_enum_input)(struct file *file, void *fh, 146 struct v4l2_input *inp); 147 int (*vidioc_g_input) (struct file *file, void *fh, unsigned int *i); 148 int (*vidioc_s_input) (struct file *file, void *fh, unsigned int i); 149 150 /* Output handling */ 151 int (*vidioc_enum_output) (struct file *file, void *fh, 152 struct v4l2_output *a); 153 int (*vidioc_g_output) (struct file *file, void *fh, unsigned int *i); 154 int (*vidioc_s_output) (struct file *file, void *fh, unsigned int i); 155 156 /* Control handling */ 157 int (*vidioc_queryctrl) (struct file *file, void *fh, 158 struct v4l2_queryctrl *a); 159 int (*vidioc_g_ctrl) (struct file *file, void *fh, 160 struct v4l2_control *a); 161 int (*vidioc_s_ctrl) (struct file *file, void *fh, 162 struct v4l2_control *a); 163 int (*vidioc_g_ext_ctrls) (struct file *file, void *fh, 164 struct v4l2_ext_controls *a); 165 int (*vidioc_s_ext_ctrls) (struct file *file, void *fh, 166 struct v4l2_ext_controls *a); 167 int (*vidioc_try_ext_ctrls) (struct file *file, void *fh, 168 struct v4l2_ext_controls *a); 169 int (*vidioc_querymenu) (struct file *file, void *fh, 170 struct v4l2_querymenu *a); 171 172 /* Audio ioctls */ 173 int (*vidioc_enumaudio) (struct file *file, void *fh, 174 struct v4l2_audio *a); 175 int (*vidioc_g_audio) (struct file *file, void *fh, 176 struct v4l2_audio *a); 177 int (*vidioc_s_audio) (struct file *file, void *fh, 178 struct v4l2_audio *a); 179 180 /* Audio out ioctls */ 181 int (*vidioc_enumaudout) (struct file *file, void *fh, 182 struct v4l2_audioout *a); 183 int (*vidioc_g_audout) (struct file *file, void *fh, 184 struct v4l2_audioout *a); 185 int (*vidioc_s_audout) (struct file *file, void *fh, 186 struct v4l2_audioout *a); 187 int (*vidioc_g_modulator) (struct file *file, void *fh, 188 struct v4l2_modulator *a); 189 int (*vidioc_s_modulator) (struct file *file, void *fh, 190 struct v4l2_modulator *a); 191 /* Crop ioctls */ 192 int (*vidioc_cropcap) (struct file *file, void *fh, 193 struct v4l2_cropcap *a); 194 int (*vidioc_g_crop) (struct file *file, void *fh, 195 struct v4l2_crop *a); 196 int (*vidioc_s_crop) (struct file *file, void *fh, 197 struct v4l2_crop *a); 198 int (*vidioc_g_selection) (struct file *file, void *fh, 199 struct v4l2_selection *s); 200 int (*vidioc_s_selection) (struct file *file, void *fh, 201 struct v4l2_selection *s); 202 /* Compression ioctls */ 203 int (*vidioc_g_jpegcomp) (struct file *file, void *fh, 204 struct v4l2_jpegcompression *a); 205 int (*vidioc_s_jpegcomp) (struct file *file, void *fh, 206 struct v4l2_jpegcompression *a); 207 int (*vidioc_g_enc_index) (struct file *file, void *fh, 208 struct v4l2_enc_idx *a); 209 int (*vidioc_encoder_cmd) (struct file *file, void *fh, 210 struct v4l2_encoder_cmd *a); 211 int (*vidioc_try_encoder_cmd) (struct file *file, void *fh, 212 struct v4l2_encoder_cmd *a); 213 int (*vidioc_decoder_cmd) (struct file *file, void *fh, 214 struct v4l2_decoder_cmd *a); 215 int (*vidioc_try_decoder_cmd) (struct file *file, void *fh, 216 struct v4l2_decoder_cmd *a); 217 218 /* Stream type-dependent parameter ioctls */ 219 int (*vidioc_g_parm) (struct file *file, void *fh, 220 struct v4l2_streamparm *a); 221 int (*vidioc_s_parm) (struct file *file, void *fh, 222 struct v4l2_streamparm *a); 223 224 /* Tuner ioctls */ 225 int (*vidioc_g_tuner) (struct file *file, void *fh, 226 struct v4l2_tuner *a); 227 int (*vidioc_s_tuner) (struct file *file, void *fh, 228 struct v4l2_tuner *a); 229 int (*vidioc_g_frequency) (struct file *file, void *fh, 230 struct v4l2_frequency *a); 231 int (*vidioc_s_frequency) (struct file *file, void *fh, 232 struct v4l2_frequency *a); 233 234 /* Sliced VBI cap */ 235 int (*vidioc_g_sliced_vbi_cap) (struct file *file, void *fh, 236 struct v4l2_sliced_vbi_cap *a); 237 238 /* Log status ioctl */ 239 int (*vidioc_log_status) (struct file *file, void *fh); 240 241 int (*vidioc_s_hw_freq_seek) (struct file *file, void *fh, 242 struct v4l2_hw_freq_seek *a); 243 244 /* Debugging ioctls */ 245 #ifdef CONFIG_VIDEO_ADV_DEBUG 246 int (*vidioc_g_register) (struct file *file, void *fh, 247 struct v4l2_dbg_register *reg); 248 int (*vidioc_s_register) (struct file *file, void *fh, 249 struct v4l2_dbg_register *reg); 250 #endif 251 int (*vidioc_g_chip_ident) (struct file *file, void *fh, 252 struct v4l2_dbg_chip_ident *chip); 253 254 int (*vidioc_enum_framesizes) (struct file *file, void *fh, 255 struct v4l2_frmsizeenum *fsize); 256 257 int (*vidioc_enum_frameintervals) (struct file *file, void *fh, 258 struct v4l2_frmivalenum *fival); 259 260 /* DV Timings IOCTLs */ 261 int (*vidioc_enum_dv_presets) (struct file *file, void *fh, 262 struct v4l2_dv_enum_preset *preset); 263 264 int (*vidioc_s_dv_preset) (struct file *file, void *fh, 265 struct v4l2_dv_preset *preset); 266 int (*vidioc_g_dv_preset) (struct file *file, void *fh, 267 struct v4l2_dv_preset *preset); 268 int (*vidioc_query_dv_preset) (struct file *file, void *fh, 269 struct v4l2_dv_preset *qpreset); 270 int (*vidioc_s_dv_timings) (struct file *file, void *fh, 271 struct v4l2_dv_timings *timings); 272 int (*vidioc_g_dv_timings) (struct file *file, void *fh, 273 struct v4l2_dv_timings *timings); 274 275 int (*vidioc_subscribe_event) (struct v4l2_fh *fh, 276 struct v4l2_event_subscription *sub); 277 int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh, 278 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 /* Use this macro for non-I2C drivers. Pass the driver name as the first arg. */ 293 #define v4l_print_ioctl(name, cmd) \ 294 do { \ 295 printk(KERN_DEBUG "%s: ", name); \ 296 v4l_printk_ioctl(cmd); \ 297 } while (0) 298 299 /* Use this macro in I2C drivers where 'client' is the struct i2c_client 300 pointer */ 301 #define v4l_i2c_print_ioctl(client, cmd) \ 302 do { \ 303 v4l_client_printk(KERN_DEBUG, client, ""); \ 304 v4l_printk_ioctl(cmd); \ 305 } while (0) 306 307 /* Video standard functions */ 308 extern const char *v4l2_norm_to_name(v4l2_std_id id); 309 extern void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod); 310 extern int v4l2_video_std_construct(struct v4l2_standard *vs, 311 int id, const char *name); 312 /* Prints the ioctl in a human-readable format */ 313 extern void v4l_printk_ioctl(unsigned int cmd); 314 315 /* names for fancy debug output */ 316 extern const char *v4l2_field_names[]; 317 extern const char *v4l2_type_names[]; 318 319 #ifdef CONFIG_COMPAT 320 /* 32 Bits compatibility layer for 64 bits processors */ 321 extern long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, 322 unsigned long arg); 323 #endif 324 325 typedef long (*v4l2_kioctl)(struct file *file, 326 unsigned int cmd, void *arg); 327 328 /* Include support for obsoleted stuff */ 329 extern long video_usercopy(struct file *file, unsigned int cmd, 330 unsigned long arg, v4l2_kioctl func); 331 332 /* Standard handlers for V4L ioctl's */ 333 extern long video_ioctl2(struct file *file, 334 unsigned int cmd, unsigned long arg); 335 336 #endif /* _V4L2_IOCTL_H */ 337