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TOMOYO Linux Cross Reference
Linux/include/media/v4l2-ioctl.h

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  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/device.h>
 15 #include <linux/mutex.h>
 16 #include <linux/compiler.h> /* need __user */
 17 #include <linux/videodev2.h>
 18 
 19 struct v4l2_fh;
 20 
 21 struct v4l2_ioctl_ops {
 22         /* ioctl callbacks */
 23 
 24         /* VIDIOC_QUERYCAP handler */
 25         int (*vidioc_querycap)(struct file *file, void *fh, struct v4l2_capability *cap);
 26 
 27         /* Priority handling */
 28         int (*vidioc_g_priority)   (struct file *file, void *fh,
 29                                     enum v4l2_priority *p);
 30         int (*vidioc_s_priority)   (struct file *file, void *fh,
 31                                     enum v4l2_priority p);
 32 
 33         /* VIDIOC_ENUM_FMT handlers */
 34         int (*vidioc_enum_fmt_vid_cap)     (struct file *file, void *fh,
 35                                             struct v4l2_fmtdesc *f);
 36         int (*vidioc_enum_fmt_vid_overlay) (struct file *file, void *fh,
 37                                             struct v4l2_fmtdesc *f);
 38         int (*vidioc_enum_fmt_vid_out)     (struct file *file, void *fh,
 39                                             struct v4l2_fmtdesc *f);
 40         int (*vidioc_enum_fmt_vid_cap_mplane)(struct file *file, void *fh,
 41                                               struct v4l2_fmtdesc *f);
 42         int (*vidioc_enum_fmt_vid_out_mplane)(struct file *file, void *fh,
 43                                               struct v4l2_fmtdesc *f);
 44         int (*vidioc_enum_fmt_type_private)(struct file *file, void *fh,
 45                                             struct v4l2_fmtdesc *f);
 46 
 47         /* VIDIOC_G_FMT handlers */
 48         int (*vidioc_g_fmt_vid_cap)    (struct file *file, void *fh,
 49                                         struct v4l2_format *f);
 50         int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh,
 51                                         struct v4l2_format *f);
 52         int (*vidioc_g_fmt_vid_out)    (struct file *file, void *fh,
 53                                         struct v4l2_format *f);
 54         int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh,
 55                                         struct v4l2_format *f);
 56         int (*vidioc_g_fmt_vbi_cap)    (struct file *file, void *fh,
 57                                         struct v4l2_format *f);
 58         int (*vidioc_g_fmt_vbi_out)    (struct file *file, void *fh,
 59                                         struct v4l2_format *f);
 60         int (*vidioc_g_fmt_sliced_vbi_cap)(struct file *file, void *fh,
 61                                         struct v4l2_format *f);
 62         int (*vidioc_g_fmt_sliced_vbi_out)(struct file *file, void *fh,
 63                                         struct v4l2_format *f);
 64         int (*vidioc_g_fmt_vid_cap_mplane)(struct file *file, void *fh,
 65                                            struct v4l2_format *f);
 66         int (*vidioc_g_fmt_vid_out_mplane)(struct file *file, void *fh,
 67                                            struct v4l2_format *f);
 68         int (*vidioc_g_fmt_type_private)(struct file *file, void *fh,
 69                                         struct v4l2_format *f);
 70 
 71         /* VIDIOC_S_FMT handlers */
 72         int (*vidioc_s_fmt_vid_cap)    (struct file *file, void *fh,
 73                                         struct v4l2_format *f);
 74         int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh,
 75                                         struct v4l2_format *f);
 76         int (*vidioc_s_fmt_vid_out)    (struct file *file, void *fh,
 77                                         struct v4l2_format *f);
 78         int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh,
 79                                         struct v4l2_format *f);
 80         int (*vidioc_s_fmt_vbi_cap)    (struct file *file, void *fh,
 81                                         struct v4l2_format *f);
 82         int (*vidioc_s_fmt_vbi_out)    (struct file *file, void *fh,
 83                                         struct v4l2_format *f);
 84         int (*vidioc_s_fmt_sliced_vbi_cap)(struct file *file, void *fh,
 85                                         struct v4l2_format *f);
 86         int (*vidioc_s_fmt_sliced_vbi_out)(struct file *file, void *fh,
 87                                         struct v4l2_format *f);
 88         int (*vidioc_s_fmt_vid_cap_mplane)(struct file *file, void *fh,
 89                                            struct v4l2_format *f);
 90         int (*vidioc_s_fmt_vid_out_mplane)(struct file *file, void *fh,
 91                                            struct v4l2_format *f);
 92         int (*vidioc_s_fmt_type_private)(struct file *file, void *fh,
 93                                         struct v4l2_format *f);
 94 
 95         /* VIDIOC_TRY_FMT handlers */
 96         int (*vidioc_try_fmt_vid_cap)    (struct file *file, void *fh,
 97                                           struct v4l2_format *f);
 98         int (*vidioc_try_fmt_vid_overlay)(struct file *file, void *fh,
 99                                           struct v4l2_format *f);
100         int (*vidioc_try_fmt_vid_out)    (struct file *file, void *fh,
101                                           struct v4l2_format *f);
102         int (*vidioc_try_fmt_vid_out_overlay)(struct file *file, void *fh,
103                                           struct v4l2_format *f);
104         int (*vidioc_try_fmt_vbi_cap)    (struct file *file, void *fh,
105                                           struct v4l2_format *f);
106         int (*vidioc_try_fmt_vbi_out)    (struct file *file, void *fh,
107                                           struct v4l2_format *f);
108         int (*vidioc_try_fmt_sliced_vbi_cap)(struct file *file, void *fh,
109                                           struct v4l2_format *f);
110         int (*vidioc_try_fmt_sliced_vbi_out)(struct file *file, void *fh,
111                                           struct v4l2_format *f);
112         int (*vidioc_try_fmt_vid_cap_mplane)(struct file *file, void *fh,
113                                              struct v4l2_format *f);
114         int (*vidioc_try_fmt_vid_out_mplane)(struct file *file, void *fh,
115                                              struct v4l2_format *f);
116         int (*vidioc_try_fmt_type_private)(struct file *file, void *fh,
117                                           struct v4l2_format *f);
118 
119         /* Buffer handlers */
120         int (*vidioc_reqbufs) (struct file *file, void *fh, struct v4l2_requestbuffers *b);
121         int (*vidioc_querybuf)(struct file *file, void *fh, struct v4l2_buffer *b);
122         int (*vidioc_qbuf)    (struct file *file, void *fh, struct v4l2_buffer *b);
123         int (*vidioc_dqbuf)   (struct file *file, void *fh, struct v4l2_buffer *b);
124 
125 
126         int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i);
127         int (*vidioc_g_fbuf)   (struct file *file, void *fh,
128                                 struct v4l2_framebuffer *a);
129         int (*vidioc_s_fbuf)   (struct file *file, void *fh,
130                                 struct v4l2_framebuffer *a);
131 
132                 /* Stream on/off */
133         int (*vidioc_streamon) (struct file *file, void *fh, enum v4l2_buf_type i);
134         int (*vidioc_streamoff)(struct file *file, void *fh, enum v4l2_buf_type i);
135 
136                 /* Standard handling
137                         ENUMSTD is handled by videodev.c
138                  */
139         int (*vidioc_g_std) (struct file *file, void *fh, v4l2_std_id *norm);
140         int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id *norm);
141         int (*vidioc_querystd) (struct file *file, void *fh, v4l2_std_id *a);
142 
143                 /* Input handling */
144         int (*vidioc_enum_input)(struct file *file, void *fh,
145                                  struct v4l2_input *inp);
146         int (*vidioc_g_input)   (struct file *file, void *fh, unsigned int *i);
147         int (*vidioc_s_input)   (struct file *file, void *fh, unsigned int i);
148 
149                 /* Output handling */
150         int (*vidioc_enum_output) (struct file *file, void *fh,
151                                   struct v4l2_output *a);
152         int (*vidioc_g_output)   (struct file *file, void *fh, unsigned int *i);
153         int (*vidioc_s_output)   (struct file *file, void *fh, unsigned int i);
154 
155                 /* Control handling */
156         int (*vidioc_queryctrl)        (struct file *file, void *fh,
157                                         struct v4l2_queryctrl *a);
158         int (*vidioc_g_ctrl)           (struct file *file, void *fh,
159                                         struct v4l2_control *a);
160         int (*vidioc_s_ctrl)           (struct file *file, void *fh,
161                                         struct v4l2_control *a);
162         int (*vidioc_g_ext_ctrls)      (struct file *file, void *fh,
163                                         struct v4l2_ext_controls *a);
164         int (*vidioc_s_ext_ctrls)      (struct file *file, void *fh,
165                                         struct v4l2_ext_controls *a);
166         int (*vidioc_try_ext_ctrls)    (struct file *file, void *fh,
167                                         struct v4l2_ext_controls *a);
168         int (*vidioc_querymenu)        (struct file *file, void *fh,
169                                         struct v4l2_querymenu *a);
170 
171         /* Audio ioctls */
172         int (*vidioc_enumaudio)        (struct file *file, void *fh,
173                                         struct v4l2_audio *a);
174         int (*vidioc_g_audio)          (struct file *file, void *fh,
175                                         struct v4l2_audio *a);
176         int (*vidioc_s_audio)          (struct file *file, void *fh,
177                                         struct v4l2_audio *a);
178 
179         /* Audio out ioctls */
180         int (*vidioc_enumaudout)       (struct file *file, void *fh,
181                                         struct v4l2_audioout *a);
182         int (*vidioc_g_audout)         (struct file *file, void *fh,
183                                         struct v4l2_audioout *a);
184         int (*vidioc_s_audout)         (struct file *file, void *fh,
185                                         struct v4l2_audioout *a);
186         int (*vidioc_g_modulator)      (struct file *file, void *fh,
187                                         struct v4l2_modulator *a);
188         int (*vidioc_s_modulator)      (struct file *file, void *fh,
189                                         struct v4l2_modulator *a);
190         /* Crop ioctls */
191         int (*vidioc_cropcap)          (struct file *file, void *fh,
192                                         struct v4l2_cropcap *a);
193         int (*vidioc_g_crop)           (struct file *file, void *fh,
194                                         struct v4l2_crop *a);
195         int (*vidioc_s_crop)           (struct file *file, void *fh,
196                                         struct v4l2_crop *a);
197         /* Compression ioctls */
198         int (*vidioc_g_jpegcomp)       (struct file *file, void *fh,
199                                         struct v4l2_jpegcompression *a);
200         int (*vidioc_s_jpegcomp)       (struct file *file, void *fh,
201                                         struct v4l2_jpegcompression *a);
202         int (*vidioc_g_enc_index)      (struct file *file, void *fh,
203                                         struct v4l2_enc_idx *a);
204         int (*vidioc_encoder_cmd)      (struct file *file, void *fh,
205                                         struct v4l2_encoder_cmd *a);
206         int (*vidioc_try_encoder_cmd)  (struct file *file, void *fh,
207                                         struct v4l2_encoder_cmd *a);
208 
209         /* Stream type-dependent parameter ioctls */
210         int (*vidioc_g_parm)           (struct file *file, void *fh,
211                                         struct v4l2_streamparm *a);
212         int (*vidioc_s_parm)           (struct file *file, void *fh,
213                                         struct v4l2_streamparm *a);
214 
215         /* Tuner ioctls */
216         int (*vidioc_g_tuner)          (struct file *file, void *fh,
217                                         struct v4l2_tuner *a);
218         int (*vidioc_s_tuner)          (struct file *file, void *fh,
219                                         struct v4l2_tuner *a);
220         int (*vidioc_g_frequency)      (struct file *file, void *fh,
221                                         struct v4l2_frequency *a);
222         int (*vidioc_s_frequency)      (struct file *file, void *fh,
223                                         struct v4l2_frequency *a);
224 
225         /* Sliced VBI cap */
226         int (*vidioc_g_sliced_vbi_cap) (struct file *file, void *fh,
227                                         struct v4l2_sliced_vbi_cap *a);
228 
229         /* Log status ioctl */
230         int (*vidioc_log_status)       (struct file *file, void *fh);
231 
232         int (*vidioc_s_hw_freq_seek)   (struct file *file, void *fh,
233                                         struct v4l2_hw_freq_seek *a);
234 
235         /* Debugging ioctls */
236 #ifdef CONFIG_VIDEO_ADV_DEBUG
237         int (*vidioc_g_register)       (struct file *file, void *fh,
238                                         struct v4l2_dbg_register *reg);
239         int (*vidioc_s_register)       (struct file *file, void *fh,
240                                         struct v4l2_dbg_register *reg);
241 #endif
242         int (*vidioc_g_chip_ident)     (struct file *file, void *fh,
243                                         struct v4l2_dbg_chip_ident *chip);
244 
245         int (*vidioc_enum_framesizes)   (struct file *file, void *fh,
246                                          struct v4l2_frmsizeenum *fsize);
247 
248         int (*vidioc_enum_frameintervals) (struct file *file, void *fh,
249                                            struct v4l2_frmivalenum *fival);
250 
251         /* DV Timings IOCTLs */
252         int (*vidioc_enum_dv_presets) (struct file *file, void *fh,
253                                        struct v4l2_dv_enum_preset *preset);
254 
255         int (*vidioc_s_dv_preset) (struct file *file, void *fh,
256                                    struct v4l2_dv_preset *preset);
257         int (*vidioc_g_dv_preset) (struct file *file, void *fh,
258                                    struct v4l2_dv_preset *preset);
259         int (*vidioc_query_dv_preset) (struct file *file, void *fh,
260                                         struct v4l2_dv_preset *qpreset);
261         int (*vidioc_s_dv_timings) (struct file *file, void *fh,
262                                     struct v4l2_dv_timings *timings);
263         int (*vidioc_g_dv_timings) (struct file *file, void *fh,
264                                     struct v4l2_dv_timings *timings);
265 
266         int (*vidioc_subscribe_event)  (struct v4l2_fh *fh,
267                                         struct v4l2_event_subscription *sub);
268         int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh,
269                                         struct v4l2_event_subscription *sub);
270 
271         /* For other private ioctls */
272         long (*vidioc_default)         (struct file *file, void *fh,
273                                         bool valid_prio, int cmd, void *arg);
274 };
275 
276 
277 /* v4l debugging and diagnostics */
278 
279 /* Debug bitmask flags to be used on V4L2 */
280 #define V4L2_DEBUG_IOCTL     0x01
281 #define V4L2_DEBUG_IOCTL_ARG 0x02
282 
283 /* Use this macro for non-I2C drivers. Pass the driver name as the first arg. */
284 #define v4l_print_ioctl(name, cmd)               \
285         do {                                     \
286                 printk(KERN_DEBUG "%s: ", name); \
287                 v4l_printk_ioctl(cmd);           \
288         } while (0)
289 
290 /* Use this macro in I2C drivers where 'client' is the struct i2c_client
291    pointer */
292 #define v4l_i2c_print_ioctl(client, cmd)                   \
293         do {                                               \
294                 v4l_client_printk(KERN_DEBUG, client, ""); \
295                 v4l_printk_ioctl(cmd);                     \
296         } while (0)
297 
298 /*  Video standard functions  */
299 extern const char *v4l2_norm_to_name(v4l2_std_id id);
300 extern void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod);
301 extern int v4l2_video_std_construct(struct v4l2_standard *vs,
302                                     int id, const char *name);
303 /* Prints the ioctl in a human-readable format */
304 extern void v4l_printk_ioctl(unsigned int 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 

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