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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/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 | #endif | |
247 | int (*vidioc_g_chip_ident) (struct file *file, void *fh, | |
248 | struct v4l2_dbg_chip_ident *chip); | |
249 | ||
250 | int (*vidioc_enum_framesizes) (struct file *file, void *fh, | |
251 | struct v4l2_frmsizeenum *fsize); | |
252 | ||
253 | int (*vidioc_enum_frameintervals) (struct file *file, void *fh, | |
254 | struct v4l2_frmivalenum *fival); | |
255 | ||
256 | /* DV Timings IOCTLs */ | |
257 | int (*vidioc_s_dv_timings) (struct file *file, void *fh, | |
258 | struct v4l2_dv_timings *timings); | |
259 | int (*vidioc_g_dv_timings) (struct file *file, void *fh, | |
260 | struct v4l2_dv_timings *timings); | |
261 | int (*vidioc_query_dv_timings) (struct file *file, void *fh, | |
262 | struct v4l2_dv_timings *timings); | |
263 | int (*vidioc_enum_dv_timings) (struct file *file, void *fh, | |
264 | struct v4l2_enum_dv_timings *timings); | |
265 | int (*vidioc_dv_timings_cap) (struct file *file, void *fh, | |
266 | struct v4l2_dv_timings_cap *cap); | |
267 | ||
268 | int (*vidioc_subscribe_event) (struct v4l2_fh *fh, | |
269 | const struct v4l2_event_subscription *sub); | |
270 | int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh, | |
271 | const struct v4l2_event_subscription *sub); | |
272 | ||
273 | /* For other private ioctls */ | |
274 | long (*vidioc_default) (struct file *file, void *fh, | |
275 | bool valid_prio, int cmd, void *arg); | |
276 | }; | |
277 | ||
278 | ||
279 | /* v4l debugging and diagnostics */ | |
280 | ||
281 | /* Debug bitmask flags to be used on V4L2 */ | |
282 | #define V4L2_DEBUG_IOCTL 0x01 | |
283 | #define V4L2_DEBUG_IOCTL_ARG 0x02 | |
284 | ||
285 | /* Video standard functions */ | |
286 | extern const char *v4l2_norm_to_name(v4l2_std_id id); | |
287 | extern void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod); | |
288 | extern int v4l2_video_std_construct(struct v4l2_standard *vs, | |
289 | int id, const char *name); | |
290 | /* Prints the ioctl in a human-readable format. If prefix != NULL, | |
291 | then do printk(KERN_DEBUG "%s: ", prefix) first. */ | |
292 | extern void v4l_printk_ioctl(const char *prefix, unsigned int cmd); | |
293 | ||
294 | /* Internal use only: get the mutex (if any) that we need to lock for the | |
295 | given command. */ | |
296 | struct video_device; | |
297 | extern struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd); | |
298 | ||
299 | /* names for fancy debug output */ | |
300 | extern const char *v4l2_field_names[]; | |
301 | extern const char *v4l2_type_names[]; | |
302 | ||
303 | #ifdef CONFIG_COMPAT | |
304 | /* 32 Bits compatibility layer for 64 bits processors */ | |
305 | extern long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, | |
306 | unsigned long arg); | |
307 | #endif | |
308 | ||
309 | typedef long (*v4l2_kioctl)(struct file *file, | |
310 | unsigned int cmd, void *arg); | |
311 | ||
312 | /* Include support for obsoleted stuff */ | |
313 | extern long video_usercopy(struct file *file, unsigned int cmd, | |
314 | unsigned long arg, v4l2_kioctl func); | |
315 | ||
316 | /* Standard handlers for V4L ioctl's */ | |
317 | extern long video_ioctl2(struct file *file, | |
318 | unsigned int cmd, unsigned long arg); | |
319 | ||
320 | #endif /* _V4L2_IOCTL_H */ |