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401998fa MCC |
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_DEV_H | |
10 | #define _V4L2_DEV_H | |
11 | ||
38ee04f0 MCC |
12 | #define OBSOLETE_OWNER 1 /* to be removed soon */ |
13 | #define OBSOLETE_DEVDATA 1 /* to be removed soon */ | |
401998fa MCC |
14 | |
15 | #include <linux/poll.h> | |
16 | #include <linux/fs.h> | |
17 | #include <linux/device.h> | |
18 | #include <linux/mutex.h> | |
19 | #include <linux/compiler.h> /* need __user */ | |
487206f2 | 20 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
401998fa MCC |
21 | #include <linux/videodev.h> |
22 | #else | |
23 | #include <linux/videodev2.h> | |
24 | #endif | |
25 | ||
401998fa MCC |
26 | #define VIDEO_MAJOR 81 |
27 | /* Minor device allocation */ | |
28 | #define MINOR_VFL_TYPE_GRABBER_MIN 0 | |
29 | #define MINOR_VFL_TYPE_GRABBER_MAX 63 | |
30 | #define MINOR_VFL_TYPE_RADIO_MIN 64 | |
31 | #define MINOR_VFL_TYPE_RADIO_MAX 127 | |
32 | #define MINOR_VFL_TYPE_VTX_MIN 192 | |
33 | #define MINOR_VFL_TYPE_VTX_MAX 223 | |
34 | #define MINOR_VFL_TYPE_VBI_MIN 224 | |
35 | #define MINOR_VFL_TYPE_VBI_MAX 255 | |
36 | ||
37 | #define VFL_TYPE_GRABBER 0 | |
38 | #define VFL_TYPE_VBI 1 | |
39 | #define VFL_TYPE_RADIO 2 | |
40 | #define VFL_TYPE_VTX 3 | |
41 | ||
401998fa MCC |
42 | /* Video standard functions */ |
43 | extern unsigned int v4l2_video_std_fps(struct v4l2_standard *vs); | |
e75f9cee | 44 | extern char *v4l2_norm_to_name(v4l2_std_id id); |
401998fa MCC |
45 | extern int v4l2_video_std_construct(struct v4l2_standard *vs, |
46 | int id, char *name); | |
47 | ||
48 | /* prority handling */ | |
49 | struct v4l2_prio_state { | |
50 | atomic_t prios[4]; | |
51 | }; | |
52 | int v4l2_prio_init(struct v4l2_prio_state *global); | |
53 | int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local, | |
54 | enum v4l2_priority new); | |
55 | int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local); | |
56 | int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local); | |
57 | enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global); | |
58 | int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local); | |
59 | ||
60 | /* names for fancy debug output */ | |
61 | extern char *v4l2_field_names[]; | |
62 | extern char *v4l2_type_names[]; | |
63 | ||
64 | /* Compatibility layer interface -- v4l1-compat module */ | |
65 | typedef int (*v4l2_kioctl)(struct inode *inode, struct file *file, | |
66 | unsigned int cmd, void *arg); | |
67 | #ifdef CONFIG_VIDEO_V4L1_COMPAT | |
68 | int v4l_compat_translate_ioctl(struct inode *inode, struct file *file, | |
69 | int cmd, void *arg, v4l2_kioctl driver_ioctl); | |
70 | #else | |
71 | #define v4l_compat_translate_ioctl(inode,file,cmd,arg,ioctl) -EINVAL | |
72 | #endif | |
73 | ||
74 | /* 32 Bits compatibility layer for 64 bits processors */ | |
75 | extern long v4l_compat_ioctl32(struct file *file, unsigned int cmd, | |
76 | unsigned long arg); | |
77 | ||
78 | /* | |
79 | * Newer version of video_device, handled by videodev2.c | |
80 | * This version moves redundant code from video device code to | |
81 | * the common handler | |
82 | */ | |
401998fa MCC |
83 | |
84 | struct video_device | |
85 | { | |
86 | /* device ops */ | |
5e87efa3 | 87 | const struct file_operations *fops; |
401998fa | 88 | |
54bd5b66 KS |
89 | /* sysfs */ |
90 | struct device class_dev; /* v4l device */ | |
91 | struct device *dev; /* device parent */ | |
92 | ||
401998fa | 93 | /* device info */ |
401998fa MCC |
94 | char name[32]; |
95 | int type; /* v4l1 */ | |
96 | int type2; /* v4l2 */ | |
401998fa MCC |
97 | int minor; |
98 | ||
99 | int debug; /* Activates debug level*/ | |
100 | ||
101 | /* Video standard vars */ | |
e75f9cee MCC |
102 | v4l2_std_id tvnorms; /* Supported tv norms */ |
103 | v4l2_std_id current_norm; /* Current tvnorm */ | |
401998fa MCC |
104 | |
105 | /* callbacks */ | |
106 | void (*release)(struct video_device *vfd); | |
107 | ||
108 | /* ioctl callbacks */ | |
109 | ||
110 | /* VIDIOC_QUERYCAP handler */ | |
111 | int (*vidioc_querycap)(struct file *file, void *fh, struct v4l2_capability *cap); | |
112 | ||
113 | /* Priority handling */ | |
114 | int (*vidioc_g_priority) (struct file *file, void *fh, | |
115 | enum v4l2_priority *p); | |
116 | int (*vidioc_s_priority) (struct file *file, void *fh, | |
117 | enum v4l2_priority p); | |
118 | ||
119 | /* VIDIOC_ENUM_FMT handlers */ | |
120 | int (*vidioc_enum_fmt_cap) (struct file *file, void *fh, | |
121 | struct v4l2_fmtdesc *f); | |
122 | int (*vidioc_enum_fmt_overlay) (struct file *file, void *fh, | |
123 | struct v4l2_fmtdesc *f); | |
124 | int (*vidioc_enum_fmt_vbi) (struct file *file, void *fh, | |
125 | struct v4l2_fmtdesc *f); | |
126 | int (*vidioc_enum_fmt_vbi_capture) (struct file *file, void *fh, | |
127 | struct v4l2_fmtdesc *f); | |
128 | int (*vidioc_enum_fmt_video_output)(struct file *file, void *fh, | |
129 | struct v4l2_fmtdesc *f); | |
b2787845 HV |
130 | int (*vidioc_enum_fmt_output_overlay) (struct file *file, void *fh, |
131 | struct v4l2_fmtdesc *f); | |
401998fa MCC |
132 | int (*vidioc_enum_fmt_vbi_output) (struct file *file, void *fh, |
133 | struct v4l2_fmtdesc *f); | |
134 | int (*vidioc_enum_fmt_type_private)(struct file *file, void *fh, | |
135 | struct v4l2_fmtdesc *f); | |
136 | ||
137 | /* VIDIOC_G_FMT handlers */ | |
138 | int (*vidioc_g_fmt_cap) (struct file *file, void *fh, | |
139 | struct v4l2_format *f); | |
140 | int (*vidioc_g_fmt_overlay) (struct file *file, void *fh, | |
141 | struct v4l2_format *f); | |
142 | int (*vidioc_g_fmt_vbi) (struct file *file, void *fh, | |
143 | struct v4l2_format *f); | |
144 | int (*vidioc_g_fmt_vbi_output) (struct file *file, void *fh, | |
145 | struct v4l2_format *f); | |
146 | int (*vidioc_g_fmt_vbi_capture)(struct file *file, void *fh, | |
147 | struct v4l2_format *f); | |
148 | int (*vidioc_g_fmt_video_output)(struct file *file, void *fh, | |
149 | struct v4l2_format *f); | |
b2787845 HV |
150 | int (*vidioc_g_fmt_output_overlay) (struct file *file, void *fh, |
151 | struct v4l2_format *f); | |
401998fa MCC |
152 | int (*vidioc_g_fmt_type_private)(struct file *file, void *fh, |
153 | struct v4l2_format *f); | |
154 | ||
155 | /* VIDIOC_S_FMT handlers */ | |
156 | int (*vidioc_s_fmt_cap) (struct file *file, void *fh, | |
157 | struct v4l2_format *f); | |
158 | ||
159 | int (*vidioc_s_fmt_overlay) (struct file *file, void *fh, | |
160 | struct v4l2_format *f); | |
161 | int (*vidioc_s_fmt_vbi) (struct file *file, void *fh, | |
162 | struct v4l2_format *f); | |
163 | int (*vidioc_s_fmt_vbi_output) (struct file *file, void *fh, | |
164 | struct v4l2_format *f); | |
165 | int (*vidioc_s_fmt_vbi_capture)(struct file *file, void *fh, | |
166 | struct v4l2_format *f); | |
167 | int (*vidioc_s_fmt_video_output)(struct file *file, void *fh, | |
168 | struct v4l2_format *f); | |
b2787845 HV |
169 | int (*vidioc_s_fmt_output_overlay) (struct file *file, void *fh, |
170 | struct v4l2_format *f); | |
401998fa MCC |
171 | int (*vidioc_s_fmt_type_private)(struct file *file, void *fh, |
172 | struct v4l2_format *f); | |
173 | ||
174 | /* VIDIOC_TRY_FMT handlers */ | |
175 | int (*vidioc_try_fmt_cap) (struct file *file, void *fh, | |
176 | struct v4l2_format *f); | |
177 | int (*vidioc_try_fmt_overlay) (struct file *file, void *fh, | |
178 | struct v4l2_format *f); | |
179 | int (*vidioc_try_fmt_vbi) (struct file *file, void *fh, | |
180 | struct v4l2_format *f); | |
181 | int (*vidioc_try_fmt_vbi_output) (struct file *file, void *fh, | |
182 | struct v4l2_format *f); | |
183 | int (*vidioc_try_fmt_vbi_capture)(struct file *file, void *fh, | |
184 | struct v4l2_format *f); | |
185 | int (*vidioc_try_fmt_video_output)(struct file *file, void *fh, | |
186 | struct v4l2_format *f); | |
b2787845 HV |
187 | int (*vidioc_try_fmt_output_overlay)(struct file *file, void *fh, |
188 | struct v4l2_format *f); | |
401998fa MCC |
189 | int (*vidioc_try_fmt_type_private)(struct file *file, void *fh, |
190 | struct v4l2_format *f); | |
191 | ||
192 | /* Buffer handlers */ | |
193 | int (*vidioc_reqbufs) (struct file *file, void *fh, struct v4l2_requestbuffers *b); | |
194 | int (*vidioc_querybuf)(struct file *file, void *fh, struct v4l2_buffer *b); | |
195 | int (*vidioc_qbuf) (struct file *file, void *fh, struct v4l2_buffer *b); | |
196 | int (*vidioc_dqbuf) (struct file *file, void *fh, struct v4l2_buffer *b); | |
197 | ||
198 | ||
199 | int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i); | |
8a905162 | 200 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
401998fa MCC |
201 | /* buffer type is struct vidio_mbuf * */ |
202 | int (*vidiocgmbuf) (struct file *file, void *fh, struct video_mbuf *p); | |
203 | #endif | |
204 | int (*vidioc_g_fbuf) (struct file *file, void *fh, | |
205 | struct v4l2_framebuffer *a); | |
206 | int (*vidioc_s_fbuf) (struct file *file, void *fh, | |
207 | struct v4l2_framebuffer *a); | |
208 | ||
209 | /* Stream on/off */ | |
210 | int (*vidioc_streamon) (struct file *file, void *fh, enum v4l2_buf_type i); | |
211 | int (*vidioc_streamoff)(struct file *file, void *fh, enum v4l2_buf_type i); | |
212 | ||
213 | /* Standard handling | |
214 | G_STD and ENUMSTD are handled by videodev.c | |
215 | */ | |
e75f9cee | 216 | int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id *norm); |
401998fa MCC |
217 | int (*vidioc_querystd) (struct file *file, void *fh, v4l2_std_id *a); |
218 | ||
219 | /* Input handling */ | |
220 | int (*vidioc_enum_input)(struct file *file, void *fh, | |
221 | struct v4l2_input *inp); | |
222 | int (*vidioc_g_input) (struct file *file, void *fh, unsigned int *i); | |
223 | int (*vidioc_s_input) (struct file *file, void *fh, unsigned int i); | |
224 | ||
225 | /* Output handling */ | |
226 | int (*vidioc_enumoutput) (struct file *file, void *fh, | |
227 | struct v4l2_output *a); | |
228 | int (*vidioc_g_output) (struct file *file, void *fh, unsigned int *i); | |
229 | int (*vidioc_s_output) (struct file *file, void *fh, unsigned int i); | |
230 | ||
231 | /* Control handling */ | |
232 | int (*vidioc_queryctrl) (struct file *file, void *fh, | |
233 | struct v4l2_queryctrl *a); | |
234 | int (*vidioc_g_ctrl) (struct file *file, void *fh, | |
235 | struct v4l2_control *a); | |
236 | int (*vidioc_s_ctrl) (struct file *file, void *fh, | |
237 | struct v4l2_control *a); | |
05976914 HV |
238 | int (*vidioc_g_ext_ctrls) (struct file *file, void *fh, |
239 | struct v4l2_ext_controls *a); | |
240 | int (*vidioc_s_ext_ctrls) (struct file *file, void *fh, | |
241 | struct v4l2_ext_controls *a); | |
242 | int (*vidioc_try_ext_ctrls) (struct file *file, void *fh, | |
243 | struct v4l2_ext_controls *a); | |
401998fa MCC |
244 | int (*vidioc_querymenu) (struct file *file, void *fh, |
245 | struct v4l2_querymenu *a); | |
246 | ||
247 | /* Audio ioctls */ | |
248 | int (*vidioc_enumaudio) (struct file *file, void *fh, | |
249 | struct v4l2_audio *a); | |
250 | int (*vidioc_g_audio) (struct file *file, void *fh, | |
251 | struct v4l2_audio *a); | |
252 | int (*vidioc_s_audio) (struct file *file, void *fh, | |
253 | struct v4l2_audio *a); | |
254 | ||
255 | /* Audio out ioctls */ | |
256 | int (*vidioc_enumaudout) (struct file *file, void *fh, | |
257 | struct v4l2_audioout *a); | |
258 | int (*vidioc_g_audout) (struct file *file, void *fh, | |
259 | struct v4l2_audioout *a); | |
260 | int (*vidioc_s_audout) (struct file *file, void *fh, | |
261 | struct v4l2_audioout *a); | |
262 | int (*vidioc_g_modulator) (struct file *file, void *fh, | |
263 | struct v4l2_modulator *a); | |
264 | int (*vidioc_s_modulator) (struct file *file, void *fh, | |
265 | struct v4l2_modulator *a); | |
266 | /* Crop ioctls */ | |
267 | int (*vidioc_cropcap) (struct file *file, void *fh, | |
268 | struct v4l2_cropcap *a); | |
269 | int (*vidioc_g_crop) (struct file *file, void *fh, | |
270 | struct v4l2_crop *a); | |
271 | int (*vidioc_s_crop) (struct file *file, void *fh, | |
272 | struct v4l2_crop *a); | |
273 | /* Compression ioctls */ | |
401998fa MCC |
274 | int (*vidioc_g_jpegcomp) (struct file *file, void *fh, |
275 | struct v4l2_jpegcompression *a); | |
276 | int (*vidioc_s_jpegcomp) (struct file *file, void *fh, | |
277 | struct v4l2_jpegcompression *a); | |
db6eb5b3 HV |
278 | int (*vidioc_g_enc_index) (struct file *file, void *fh, |
279 | struct v4l2_enc_idx *a); | |
ada6ecd2 HV |
280 | int (*vidioc_encoder_cmd) (struct file *file, void *fh, |
281 | struct v4l2_encoder_cmd *a); | |
282 | int (*vidioc_try_encoder_cmd) (struct file *file, void *fh, | |
283 | struct v4l2_encoder_cmd *a); | |
401998fa MCC |
284 | |
285 | /* Stream type-dependent parameter ioctls */ | |
286 | int (*vidioc_g_parm) (struct file *file, void *fh, | |
287 | struct v4l2_streamparm *a); | |
288 | int (*vidioc_s_parm) (struct file *file, void *fh, | |
289 | struct v4l2_streamparm *a); | |
290 | ||
291 | /* Tuner ioctls */ | |
292 | int (*vidioc_g_tuner) (struct file *file, void *fh, | |
293 | struct v4l2_tuner *a); | |
294 | int (*vidioc_s_tuner) (struct file *file, void *fh, | |
295 | struct v4l2_tuner *a); | |
296 | int (*vidioc_g_frequency) (struct file *file, void *fh, | |
297 | struct v4l2_frequency *a); | |
298 | int (*vidioc_s_frequency) (struct file *file, void *fh, | |
299 | struct v4l2_frequency *a); | |
300 | ||
301 | /* Sliced VBI cap */ | |
302 | int (*vidioc_g_sliced_vbi_cap) (struct file *file, void *fh, | |
303 | struct v4l2_sliced_vbi_cap *a); | |
304 | ||
305 | /* Log status ioctl */ | |
306 | int (*vidioc_log_status) (struct file *file, void *fh); | |
307 | ||
308 | ||
dbbff48f TP |
309 | /* Debugging ioctls */ |
310 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
311 | int (*vidioc_g_register) (struct file *file, void *fh, | |
312 | struct v4l2_register *reg); | |
313 | int (*vidioc_s_register) (struct file *file, void *fh, | |
314 | struct v4l2_register *reg); | |
315 | #endif | |
3434eb7e HV |
316 | int (*vidioc_g_chip_ident) (struct file *file, void *fh, |
317 | struct v4l2_chip_ident *chip); | |
dbbff48f TP |
318 | |
319 | ||
5e87efa3 | 320 | #ifdef OBSOLETE_OWNER /* to be removed soon */ |
401998fa MCC |
321 | /* obsolete -- fops->owner is used instead */ |
322 | struct module *owner; | |
323 | /* dev->driver_data will be used instead some day. | |
324 | * Use the video_{get|set}_drvdata() helper functions, | |
325 | * so the switch over will be transparent for you. | |
326 | * Or use {pci|usb}_{get|set}_drvdata() directly. */ | |
327 | void *priv; | |
328 | #endif | |
329 | ||
330 | /* for videodev.c intenal usage -- please don't touch */ | |
331 | int users; /* video_exclusive_{open|close} ... */ | |
332 | struct mutex lock; /* ... helper function uses these */ | |
401998fa MCC |
333 | }; |
334 | ||
e90ff923 LT |
335 | /* Class-dev to video-device */ |
336 | #define to_video_device(cd) container_of(cd, struct video_device, class_dev) | |
337 | ||
401998fa MCC |
338 | /* Version 2 functions */ |
339 | extern int video_register_device(struct video_device *vfd, int type, int nr); | |
340 | void video_unregister_device(struct video_device *); | |
341 | extern int video_ioctl2(struct inode *inode, struct file *file, | |
342 | unsigned int cmd, unsigned long arg); | |
343 | ||
344 | /* helper functions to alloc / release struct video_device, the | |
345 | later can be used for video_device->release() */ | |
346 | struct video_device *video_device_alloc(void); | |
347 | void video_device_release(struct video_device *vfd); | |
348 | ||
349 | /* Include support for obsoleted stuff */ | |
350 | extern int video_usercopy(struct inode *inode, struct file *file, | |
351 | unsigned int cmd, unsigned long arg, | |
352 | int (*func)(struct inode *inode, struct file *file, | |
353 | unsigned int cmd, void *arg)); | |
354 | ||
8a905162 | 355 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
401998fa MCC |
356 | #include <linux/mm.h> |
357 | ||
8a6914ab | 358 | static inline int __must_check |
401998fa | 359 | video_device_create_file(struct video_device *vfd, |
54bd5b66 | 360 | struct device_attribute *attr) |
401998fa | 361 | { |
54bd5b66 | 362 | int ret = device_create_file(&vfd->class_dev, attr); |
3117beec MK |
363 | if (ret < 0) |
364 | printk(KERN_WARNING "%s error: %d\n", __FUNCTION__, ret); | |
365 | return ret; | |
401998fa MCC |
366 | } |
367 | static inline void | |
368 | video_device_remove_file(struct video_device *vfd, | |
54bd5b66 | 369 | struct device_attribute *attr) |
401998fa | 370 | { |
54bd5b66 | 371 | device_remove_file(&vfd->class_dev, attr); |
401998fa MCC |
372 | } |
373 | ||
8a905162 MCC |
374 | #endif /* CONFIG_VIDEO_V4L1_COMPAT */ |
375 | ||
5e87efa3 | 376 | #ifdef OBSOLETE_OWNER /* to be removed soon */ |
401998fa MCC |
377 | /* helper functions to access driver private data. */ |
378 | static inline void *video_get_drvdata(struct video_device *dev) | |
379 | { | |
380 | return dev->priv; | |
381 | } | |
382 | ||
383 | static inline void video_set_drvdata(struct video_device *dev, void *data) | |
384 | { | |
385 | dev->priv = data; | |
386 | } | |
38ee04f0 | 387 | |
401998fa MCC |
388 | #endif |
389 | ||
38ee04f0 MCC |
390 | #ifdef OBSOLETE_DEVDATA /* to be removed soon */ |
391 | /* Obsolete stuff - Still needed for radio devices and obsolete drivers */ | |
392 | extern struct video_device* video_devdata(struct file*); | |
401998fa MCC |
393 | extern int video_exclusive_open(struct inode *inode, struct file *file); |
394 | extern int video_exclusive_release(struct inode *inode, struct file *file); | |
38ee04f0 | 395 | #endif |
401998fa MCC |
396 | |
397 | #endif /* _V4L2_DEV_H */ |