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 18struct v4l2_fh; 19 20struct 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_sdr_cap) (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_sdr_cap) (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_sdr_cap) (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_sdr_cap) (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_expbuf) (struct file *file, void *fh, 123 struct v4l2_exportbuffer *e); 124 int (*vidioc_dqbuf) (struct file *file, void *fh, struct v4l2_buffer *b); 125 126 int (*vidioc_create_bufs)(struct file *file, void *fh, struct v4l2_create_buffers *b); 127 int (*vidioc_prepare_buf)(struct file *file, void *fh, struct v4l2_buffer *b); 128 129 int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i); 130 int (*vidioc_g_fbuf) (struct file *file, void *fh, 131 struct v4l2_framebuffer *a); 132 int (*vidioc_s_fbuf) (struct file *file, void *fh, 133 const struct v4l2_framebuffer *a); 134 135 /* Stream on/off */ 136 int (*vidioc_streamon) (struct file *file, void *fh, enum v4l2_buf_type i); 137 int (*vidioc_streamoff)(struct file *file, void *fh, enum v4l2_buf_type i); 138 139 /* Standard handling 140 ENUMSTD is handled by videodev.c 141 */ 142 int (*vidioc_g_std) (struct file *file, void *fh, v4l2_std_id *norm); 143 int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id norm); 144 int (*vidioc_querystd) (struct file *file, void *fh, v4l2_std_id *a); 145 146 /* Input handling */ 147 int (*vidioc_enum_input)(struct file *file, void *fh, 148 struct v4l2_input *inp); 149 int (*vidioc_g_input) (struct file *file, void *fh, unsigned int *i); 150 int (*vidioc_s_input) (struct file *file, void *fh, unsigned int i); 151 152 /* Output handling */ 153 int (*vidioc_enum_output) (struct file *file, void *fh, 154 struct v4l2_output *a); 155 int (*vidioc_g_output) (struct file *file, void *fh, unsigned int *i); 156 int (*vidioc_s_output) (struct file *file, void *fh, unsigned int i); 157 158 /* Control handling */ 159 int (*vidioc_queryctrl) (struct file *file, void *fh, 160 struct v4l2_queryctrl *a); 161 int (*vidioc_query_ext_ctrl) (struct file *file, void *fh, 162 struct v4l2_query_ext_ctrl *a); 163 int (*vidioc_g_ctrl) (struct file *file, void *fh, 164 struct v4l2_control *a); 165 int (*vidioc_s_ctrl) (struct file *file, void *fh, 166 struct v4l2_control *a); 167 int (*vidioc_g_ext_ctrls) (struct file *file, void *fh, 168 struct v4l2_ext_controls *a); 169 int (*vidioc_s_ext_ctrls) (struct file *file, void *fh, 170 struct v4l2_ext_controls *a); 171 int (*vidioc_try_ext_ctrls) (struct file *file, void *fh, 172 struct v4l2_ext_controls *a); 173 int (*vidioc_querymenu) (struct file *file, void *fh, 174 struct v4l2_querymenu *a); 175 176 /* Audio ioctls */ 177 int (*vidioc_enumaudio) (struct file *file, void *fh, 178 struct v4l2_audio *a); 179 int (*vidioc_g_audio) (struct file *file, void *fh, 180 struct v4l2_audio *a); 181 int (*vidioc_s_audio) (struct file *file, void *fh, 182 const struct v4l2_audio *a); 183 184 /* Audio out ioctls */ 185 int (*vidioc_enumaudout) (struct file *file, void *fh, 186 struct v4l2_audioout *a); 187 int (*vidioc_g_audout) (struct file *file, void *fh, 188 struct v4l2_audioout *a); 189 int (*vidioc_s_audout) (struct file *file, void *fh, 190 const struct v4l2_audioout *a); 191 int (*vidioc_g_modulator) (struct file *file, void *fh, 192 struct v4l2_modulator *a); 193 int (*vidioc_s_modulator) (struct file *file, void *fh, 194 const struct v4l2_modulator *a); 195 /* Crop ioctls */ 196 int (*vidioc_cropcap) (struct file *file, void *fh, 197 struct v4l2_cropcap *a); 198 int (*vidioc_g_crop) (struct file *file, void *fh, 199 struct v4l2_crop *a); 200 int (*vidioc_s_crop) (struct file *file, void *fh, 201 const struct v4l2_crop *a); 202 int (*vidioc_g_selection) (struct file *file, void *fh, 203 struct v4l2_selection *s); 204 int (*vidioc_s_selection) (struct file *file, void *fh, 205 struct v4l2_selection *s); 206 /* Compression ioctls */ 207 int (*vidioc_g_jpegcomp) (struct file *file, void *fh, 208 struct v4l2_jpegcompression *a); 209 int (*vidioc_s_jpegcomp) (struct file *file, void *fh, 210 const struct v4l2_jpegcompression *a); 211 int (*vidioc_g_enc_index) (struct file *file, void *fh, 212 struct v4l2_enc_idx *a); 213 int (*vidioc_encoder_cmd) (struct file *file, void *fh, 214 struct v4l2_encoder_cmd *a); 215 int (*vidioc_try_encoder_cmd) (struct file *file, void *fh, 216 struct v4l2_encoder_cmd *a); 217 int (*vidioc_decoder_cmd) (struct file *file, void *fh, 218 struct v4l2_decoder_cmd *a); 219 int (*vidioc_try_decoder_cmd) (struct file *file, void *fh, 220 struct v4l2_decoder_cmd *a); 221 222 /* Stream type-dependent parameter ioctls */ 223 int (*vidioc_g_parm) (struct file *file, void *fh, 224 struct v4l2_streamparm *a); 225 int (*vidioc_s_parm) (struct file *file, void *fh, 226 struct v4l2_streamparm *a); 227 228 /* Tuner ioctls */ 229 int (*vidioc_g_tuner) (struct file *file, void *fh, 230 struct v4l2_tuner *a); 231 int (*vidioc_s_tuner) (struct file *file, void *fh, 232 const struct v4l2_tuner *a); 233 int (*vidioc_g_frequency) (struct file *file, void *fh, 234 struct v4l2_frequency *a); 235 int (*vidioc_s_frequency) (struct file *file, void *fh, 236 const struct v4l2_frequency *a); 237 int (*vidioc_enum_freq_bands) (struct file *file, void *fh, 238 struct v4l2_frequency_band *band); 239 240 /* Sliced VBI cap */ 241 int (*vidioc_g_sliced_vbi_cap) (struct file *file, void *fh, 242 struct v4l2_sliced_vbi_cap *a); 243 244 /* Log status ioctl */ 245 int (*vidioc_log_status) (struct file *file, void *fh); 246 247 int (*vidioc_s_hw_freq_seek) (struct file *file, void *fh, 248 const struct v4l2_hw_freq_seek *a); 249 250 /* Debugging ioctls */ 251#ifdef CONFIG_VIDEO_ADV_DEBUG 252 int (*vidioc_g_register) (struct file *file, void *fh, 253 struct v4l2_dbg_register *reg); 254 int (*vidioc_s_register) (struct file *file, void *fh, 255 const struct v4l2_dbg_register *reg); 256 257 int (*vidioc_g_chip_info) (struct file *file, void *fh, 258 struct v4l2_dbg_chip_info *chip); 259#endif 260 261 int (*vidioc_enum_framesizes) (struct file *file, void *fh, 262 struct v4l2_frmsizeenum *fsize); 263 264 int (*vidioc_enum_frameintervals) (struct file *file, void *fh, 265 struct v4l2_frmivalenum *fival); 266 267 /* DV Timings IOCTLs */ 268 int (*vidioc_s_dv_timings) (struct file *file, void *fh, 269 struct v4l2_dv_timings *timings); 270 int (*vidioc_g_dv_timings) (struct file *file, void *fh, 271 struct v4l2_dv_timings *timings); 272 int (*vidioc_query_dv_timings) (struct file *file, void *fh, 273 struct v4l2_dv_timings *timings); 274 int (*vidioc_enum_dv_timings) (struct file *file, void *fh, 275 struct v4l2_enum_dv_timings *timings); 276 int (*vidioc_dv_timings_cap) (struct file *file, void *fh, 277 struct v4l2_dv_timings_cap *cap); 278 int (*vidioc_g_edid) (struct file *file, void *fh, struct v4l2_edid *edid); 279 int (*vidioc_s_edid) (struct file *file, void *fh, struct v4l2_edid *edid); 280 281 int (*vidioc_subscribe_event) (struct v4l2_fh *fh, 282 const struct v4l2_event_subscription *sub); 283 int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh, 284 const struct v4l2_event_subscription *sub); 285 286 /* For other private ioctls */ 287 long (*vidioc_default) (struct file *file, void *fh, 288 bool valid_prio, unsigned int cmd, void *arg); 289}; 290 291 292/* v4l debugging and diagnostics */ 293 294/* Debug bitmask flags to be used on V4L2 */ 295#define V4L2_DEBUG_IOCTL 0x01 296#define V4L2_DEBUG_IOCTL_ARG 0x02 297 298/* Video standard functions */ 299extern const char *v4l2_norm_to_name(v4l2_std_id id); 300extern void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod); 301extern int v4l2_video_std_construct(struct v4l2_standard *vs, 302 int id, const char *name); 303/* Prints the ioctl in a human-readable format. If prefix != NULL, 304 then do printk(KERN_DEBUG "%s: ", prefix) first. */ 305extern void v4l_printk_ioctl(const char *prefix, unsigned int cmd); 306 307/* Internal use only: get the mutex (if any) that we need to lock for the 308 given command. */ 309struct video_device; 310extern struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd); 311 312/* names for fancy debug output */ 313extern const char *v4l2_field_names[]; 314extern const char *v4l2_type_names[]; 315 316#ifdef CONFIG_COMPAT 317/* 32 Bits compatibility layer for 64 bits processors */ 318extern long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, 319 unsigned long arg); 320#endif 321 322typedef long (*v4l2_kioctl)(struct file *file, 323 unsigned int cmd, void *arg); 324 325/* Include support for obsoleted stuff */ 326extern long video_usercopy(struct file *file, unsigned int cmd, 327 unsigned long arg, v4l2_kioctl func); 328 329/* Standard handlers for V4L ioctl's */ 330extern long video_ioctl2(struct file *file, 331 unsigned int cmd, unsigned long arg); 332 333#endif /* _V4L2_IOCTL_H */ 334