Commit | Line | Data |
---|---|---|
2096a5dc | 1 | /* |
3dd5ee08 | 2 | * V4L2 sub-device |
2096a5dc | 3 | * |
3dd5ee08 | 4 | * Copyright (C) 2010 Nokia Corporation |
2096a5dc | 5 | * |
3dd5ee08 LP |
6 | * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
7 | * Sakari Ailus <sakari.ailus@iki.fi> | |
2096a5dc | 8 | * |
3dd5ee08 LP |
9 | * This program is free software; you can redistribute it and/or modify |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
2096a5dc | 12 | * |
3dd5ee08 LP |
13 | * This program is distributed in the hope that it will be useful, |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
2096a5dc | 17 | * |
3dd5ee08 LP |
18 | * You should have received a copy of the GNU General Public License |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
2096a5dc LP |
21 | */ |
22 | ||
2096a5dc | 23 | #include <linux/ioctl.h> |
02adb1cc SA |
24 | #include <linux/slab.h> |
25 | #include <linux/types.h> | |
2096a5dc | 26 | #include <linux/videodev2.h> |
35a24636 | 27 | #include <linux/export.h> |
2096a5dc | 28 | |
ea8aa434 | 29 | #include <media/v4l2-ctrls.h> |
2096a5dc LP |
30 | #include <media/v4l2-device.h> |
31 | #include <media/v4l2-ioctl.h> | |
02adb1cc SA |
32 | #include <media/v4l2-fh.h> |
33 | #include <media/v4l2-event.h> | |
2096a5dc | 34 | |
7cd5a16b SV |
35 | static int subdev_fh_init(struct v4l2_subdev_fh *fh, struct v4l2_subdev *sd) |
36 | { | |
37 | #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) | |
9b02cbb3 LP |
38 | if (sd->entity.num_pads) { |
39 | fh->pad = v4l2_subdev_alloc_pad_config(sd); | |
40 | if (fh->pad == NULL) | |
41 | return -ENOMEM; | |
42 | } | |
7cd5a16b SV |
43 | #endif |
44 | return 0; | |
45 | } | |
46 | ||
47 | static void subdev_fh_free(struct v4l2_subdev_fh *fh) | |
48 | { | |
49 | #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) | |
9b02cbb3 | 50 | v4l2_subdev_free_pad_config(fh->pad); |
ae184cda | 51 | fh->pad = NULL; |
7cd5a16b SV |
52 | #endif |
53 | } | |
54 | ||
2096a5dc LP |
55 | static int subdev_open(struct file *file) |
56 | { | |
02adb1cc SA |
57 | struct video_device *vdev = video_devdata(file); |
58 | struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); | |
7cd5a16b | 59 | struct v4l2_subdev_fh *subdev_fh; |
61f5db54 | 60 | #if defined(CONFIG_MEDIA_CONTROLLER) |
f0beea8f | 61 | struct media_entity *entity = NULL; |
61f5db54 | 62 | #endif |
02adb1cc SA |
63 | int ret; |
64 | ||
7cd5a16b SV |
65 | subdev_fh = kzalloc(sizeof(*subdev_fh), GFP_KERNEL); |
66 | if (subdev_fh == NULL) | |
67 | return -ENOMEM; | |
02adb1cc | 68 | |
7cd5a16b SV |
69 | ret = subdev_fh_init(subdev_fh, sd); |
70 | if (ret) { | |
71 | kfree(subdev_fh); | |
72 | return ret; | |
73 | } | |
74 | ||
523f46d6 | 75 | v4l2_fh_init(&subdev_fh->vfh, vdev); |
7cd5a16b SV |
76 | v4l2_fh_add(&subdev_fh->vfh); |
77 | file->private_data = &subdev_fh->vfh; | |
61f5db54 LP |
78 | #if defined(CONFIG_MEDIA_CONTROLLER) |
79 | if (sd->v4l2_dev->mdev) { | |
80 | entity = media_entity_get(&sd->entity); | |
81 | if (!entity) { | |
82 | ret = -EBUSY; | |
83 | goto err; | |
84 | } | |
85 | } | |
86 | #endif | |
7cd5a16b | 87 | |
f0beea8f LP |
88 | if (sd->internal_ops && sd->internal_ops->open) { |
89 | ret = sd->internal_ops->open(sd, subdev_fh); | |
90 | if (ret < 0) | |
91 | goto err; | |
92 | } | |
93 | ||
2096a5dc | 94 | return 0; |
02adb1cc SA |
95 | |
96 | err: | |
f0beea8f | 97 | #if defined(CONFIG_MEDIA_CONTROLLER) |
5164d6aa | 98 | media_entity_put(entity); |
f0beea8f | 99 | #endif |
7cd5a16b SV |
100 | v4l2_fh_del(&subdev_fh->vfh); |
101 | v4l2_fh_exit(&subdev_fh->vfh); | |
102 | subdev_fh_free(subdev_fh); | |
103 | kfree(subdev_fh); | |
02adb1cc SA |
104 | |
105 | return ret; | |
2096a5dc LP |
106 | } |
107 | ||
108 | static int subdev_close(struct file *file) | |
109 | { | |
61f5db54 LP |
110 | struct video_device *vdev = video_devdata(file); |
111 | struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); | |
02adb1cc | 112 | struct v4l2_fh *vfh = file->private_data; |
7cd5a16b | 113 | struct v4l2_subdev_fh *subdev_fh = to_v4l2_subdev_fh(vfh); |
02adb1cc | 114 | |
f0beea8f LP |
115 | if (sd->internal_ops && sd->internal_ops->close) |
116 | sd->internal_ops->close(sd, subdev_fh); | |
61f5db54 LP |
117 | #if defined(CONFIG_MEDIA_CONTROLLER) |
118 | if (sd->v4l2_dev->mdev) | |
119 | media_entity_put(&sd->entity); | |
120 | #endif | |
7cd5a16b SV |
121 | v4l2_fh_del(vfh); |
122 | v4l2_fh_exit(vfh); | |
123 | subdev_fh_free(subdev_fh); | |
124 | kfree(subdev_fh); | |
125 | file->private_data = NULL; | |
02adb1cc | 126 | |
2096a5dc LP |
127 | return 0; |
128 | } | |
129 | ||
d352bcc9 | 130 | #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) |
b225e398 SA |
131 | static int check_format(struct v4l2_subdev *sd, |
132 | struct v4l2_subdev_format *format) | |
133 | { | |
134 | if (format->which != V4L2_SUBDEV_FORMAT_TRY && | |
135 | format->which != V4L2_SUBDEV_FORMAT_ACTIVE) | |
136 | return -EINVAL; | |
137 | ||
138 | if (format->pad >= sd->entity.num_pads) | |
139 | return -EINVAL; | |
140 | ||
141 | return 0; | |
142 | } | |
143 | ||
144 | static int check_crop(struct v4l2_subdev *sd, struct v4l2_subdev_crop *crop) | |
145 | { | |
146 | if (crop->which != V4L2_SUBDEV_FORMAT_TRY && | |
147 | crop->which != V4L2_SUBDEV_FORMAT_ACTIVE) | |
148 | return -EINVAL; | |
149 | ||
150 | if (crop->pad >= sd->entity.num_pads) | |
151 | return -EINVAL; | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | static int check_selection(struct v4l2_subdev *sd, | |
157 | struct v4l2_subdev_selection *sel) | |
158 | { | |
159 | if (sel->which != V4L2_SUBDEV_FORMAT_TRY && | |
160 | sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) | |
161 | return -EINVAL; | |
162 | ||
163 | if (sel->pad >= sd->entity.num_pads) | |
164 | return -EINVAL; | |
165 | ||
166 | return 0; | |
167 | } | |
168 | ||
169 | static int check_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) | |
170 | { | |
171 | if (edid->pad >= sd->entity.num_pads) | |
172 | return -EINVAL; | |
173 | ||
174 | if (edid->blocks && edid->edid == NULL) | |
175 | return -EINVAL; | |
176 | ||
177 | return 0; | |
178 | } | |
d352bcc9 | 179 | #endif |
b225e398 | 180 | |
2096a5dc LP |
181 | static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg) |
182 | { | |
ea8aa434 LP |
183 | struct video_device *vdev = video_devdata(file); |
184 | struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); | |
7cd5a16b | 185 | struct v4l2_fh *vfh = file->private_data; |
333c8b97 LP |
186 | #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) |
187 | struct v4l2_subdev_fh *subdev_fh = to_v4l2_subdev_fh(vfh); | |
b225e398 | 188 | int rval; |
d352bcc9 | 189 | #endif |
ea8aa434 | 190 | |
2096a5dc | 191 | switch (cmd) { |
ea8aa434 | 192 | case VIDIOC_QUERYCTRL: |
18d171ba | 193 | return v4l2_queryctrl(vfh->ctrl_handler, arg); |
ea8aa434 | 194 | |
e6bee368 HV |
195 | case VIDIOC_QUERY_EXT_CTRL: |
196 | return v4l2_query_ext_ctrl(vfh->ctrl_handler, arg); | |
197 | ||
ea8aa434 | 198 | case VIDIOC_QUERYMENU: |
18d171ba | 199 | return v4l2_querymenu(vfh->ctrl_handler, arg); |
ea8aa434 LP |
200 | |
201 | case VIDIOC_G_CTRL: | |
18d171ba | 202 | return v4l2_g_ctrl(vfh->ctrl_handler, arg); |
ea8aa434 LP |
203 | |
204 | case VIDIOC_S_CTRL: | |
ab892bac | 205 | return v4l2_s_ctrl(vfh, vfh->ctrl_handler, arg); |
ea8aa434 LP |
206 | |
207 | case VIDIOC_G_EXT_CTRLS: | |
18d171ba | 208 | return v4l2_g_ext_ctrls(vfh->ctrl_handler, arg); |
ea8aa434 LP |
209 | |
210 | case VIDIOC_S_EXT_CTRLS: | |
ab892bac | 211 | return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, arg); |
ea8aa434 LP |
212 | |
213 | case VIDIOC_TRY_EXT_CTRLS: | |
18d171ba | 214 | return v4l2_try_ext_ctrls(vfh->ctrl_handler, arg); |
ea8aa434 | 215 | |
02adb1cc SA |
216 | case VIDIOC_DQEVENT: |
217 | if (!(sd->flags & V4L2_SUBDEV_FL_HAS_EVENTS)) | |
218 | return -ENOIOCTLCMD; | |
219 | ||
7cd5a16b | 220 | return v4l2_event_dequeue(vfh, arg, file->f_flags & O_NONBLOCK); |
02adb1cc SA |
221 | |
222 | case VIDIOC_SUBSCRIBE_EVENT: | |
7cd5a16b | 223 | return v4l2_subdev_call(sd, core, subscribe_event, vfh, arg); |
02adb1cc SA |
224 | |
225 | case VIDIOC_UNSUBSCRIBE_EVENT: | |
7cd5a16b | 226 | return v4l2_subdev_call(sd, core, unsubscribe_event, vfh, arg); |
69967a71 MH |
227 | |
228 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
229 | case VIDIOC_DBG_G_REGISTER: | |
230 | { | |
231 | struct v4l2_dbg_register *p = arg; | |
232 | ||
233 | if (!capable(CAP_SYS_ADMIN)) | |
234 | return -EPERM; | |
235 | return v4l2_subdev_call(sd, core, g_register, p); | |
236 | } | |
237 | case VIDIOC_DBG_S_REGISTER: | |
238 | { | |
239 | struct v4l2_dbg_register *p = arg; | |
240 | ||
241 | if (!capable(CAP_SYS_ADMIN)) | |
242 | return -EPERM; | |
243 | return v4l2_subdev_call(sd, core, s_register, p); | |
244 | } | |
245 | #endif | |
bcd158de | 246 | |
42194e72 HV |
247 | case VIDIOC_LOG_STATUS: { |
248 | int ret; | |
249 | ||
250 | pr_info("%s: ================= START STATUS =================\n", | |
251 | sd->name); | |
252 | ret = v4l2_subdev_call(sd, core, log_status); | |
253 | pr_info("%s: ================== END STATUS ==================\n", | |
254 | sd->name); | |
255 | return ret; | |
256 | } | |
bcd158de | 257 | |
333c8b97 LP |
258 | #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) |
259 | case VIDIOC_SUBDEV_G_FMT: { | |
260 | struct v4l2_subdev_format *format = arg; | |
261 | ||
b225e398 SA |
262 | rval = check_format(sd, format); |
263 | if (rval) | |
264 | return rval; | |
333c8b97 | 265 | |
f7234138 | 266 | return v4l2_subdev_call(sd, pad, get_fmt, subdev_fh->pad, format); |
333c8b97 LP |
267 | } |
268 | ||
269 | case VIDIOC_SUBDEV_S_FMT: { | |
270 | struct v4l2_subdev_format *format = arg; | |
271 | ||
b225e398 SA |
272 | rval = check_format(sd, format); |
273 | if (rval) | |
274 | return rval; | |
02adb1cc | 275 | |
f7234138 | 276 | return v4l2_subdev_call(sd, pad, set_fmt, subdev_fh->pad, format); |
333c8b97 LP |
277 | } |
278 | ||
f6a5cb1b AK |
279 | case VIDIOC_SUBDEV_G_CROP: { |
280 | struct v4l2_subdev_crop *crop = arg; | |
5b9d770f | 281 | struct v4l2_subdev_selection sel; |
f6a5cb1b | 282 | |
b225e398 SA |
283 | rval = check_crop(sd, crop); |
284 | if (rval) | |
285 | return rval; | |
f6a5cb1b | 286 | |
5b9d770f SA |
287 | memset(&sel, 0, sizeof(sel)); |
288 | sel.which = crop->which; | |
289 | sel.pad = crop->pad; | |
5689b288 | 290 | sel.target = V4L2_SEL_TGT_CROP; |
5b9d770f SA |
291 | |
292 | rval = v4l2_subdev_call( | |
f7234138 | 293 | sd, pad, get_selection, subdev_fh->pad, &sel); |
5b9d770f SA |
294 | |
295 | crop->rect = sel.r; | |
296 | ||
297 | return rval; | |
f6a5cb1b AK |
298 | } |
299 | ||
300 | case VIDIOC_SUBDEV_S_CROP: { | |
301 | struct v4l2_subdev_crop *crop = arg; | |
5b9d770f | 302 | struct v4l2_subdev_selection sel; |
f6a5cb1b | 303 | |
b225e398 SA |
304 | rval = check_crop(sd, crop); |
305 | if (rval) | |
306 | return rval; | |
f6a5cb1b | 307 | |
5b9d770f SA |
308 | memset(&sel, 0, sizeof(sel)); |
309 | sel.which = crop->which; | |
310 | sel.pad = crop->pad; | |
5689b288 | 311 | sel.target = V4L2_SEL_TGT_CROP; |
5b9d770f SA |
312 | sel.r = crop->rect; |
313 | ||
314 | rval = v4l2_subdev_call( | |
f7234138 | 315 | sd, pad, set_selection, subdev_fh->pad, &sel); |
5b9d770f SA |
316 | |
317 | crop->rect = sel.r; | |
318 | ||
319 | return rval; | |
f6a5cb1b AK |
320 | } |
321 | ||
333c8b97 LP |
322 | case VIDIOC_SUBDEV_ENUM_MBUS_CODE: { |
323 | struct v4l2_subdev_mbus_code_enum *code = arg; | |
324 | ||
20058f90 HV |
325 | if (code->which != V4L2_SUBDEV_FORMAT_TRY && |
326 | code->which != V4L2_SUBDEV_FORMAT_ACTIVE) | |
327 | return -EINVAL; | |
328 | ||
333c8b97 LP |
329 | if (code->pad >= sd->entity.num_pads) |
330 | return -EINVAL; | |
331 | ||
f7234138 | 332 | return v4l2_subdev_call(sd, pad, enum_mbus_code, subdev_fh->pad, |
333c8b97 LP |
333 | code); |
334 | } | |
335 | ||
336 | case VIDIOC_SUBDEV_ENUM_FRAME_SIZE: { | |
337 | struct v4l2_subdev_frame_size_enum *fse = arg; | |
338 | ||
20058f90 HV |
339 | if (fse->which != V4L2_SUBDEV_FORMAT_TRY && |
340 | fse->which != V4L2_SUBDEV_FORMAT_ACTIVE) | |
341 | return -EINVAL; | |
342 | ||
333c8b97 LP |
343 | if (fse->pad >= sd->entity.num_pads) |
344 | return -EINVAL; | |
345 | ||
f7234138 | 346 | return v4l2_subdev_call(sd, pad, enum_frame_size, subdev_fh->pad, |
333c8b97 LP |
347 | fse); |
348 | } | |
35c3017a | 349 | |
743e1837 SA |
350 | case VIDIOC_SUBDEV_G_FRAME_INTERVAL: { |
351 | struct v4l2_subdev_frame_interval *fi = arg; | |
352 | ||
353 | if (fi->pad >= sd->entity.num_pads) | |
354 | return -EINVAL; | |
355 | ||
35c3017a | 356 | return v4l2_subdev_call(sd, video, g_frame_interval, arg); |
743e1837 SA |
357 | } |
358 | ||
359 | case VIDIOC_SUBDEV_S_FRAME_INTERVAL: { | |
360 | struct v4l2_subdev_frame_interval *fi = arg; | |
361 | ||
362 | if (fi->pad >= sd->entity.num_pads) | |
363 | return -EINVAL; | |
35c3017a | 364 | |
35c3017a | 365 | return v4l2_subdev_call(sd, video, s_frame_interval, arg); |
743e1837 | 366 | } |
35c3017a LP |
367 | |
368 | case VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL: { | |
369 | struct v4l2_subdev_frame_interval_enum *fie = arg; | |
370 | ||
20058f90 HV |
371 | if (fie->which != V4L2_SUBDEV_FORMAT_TRY && |
372 | fie->which != V4L2_SUBDEV_FORMAT_ACTIVE) | |
373 | return -EINVAL; | |
374 | ||
35c3017a LP |
375 | if (fie->pad >= sd->entity.num_pads) |
376 | return -EINVAL; | |
377 | ||
f7234138 | 378 | return v4l2_subdev_call(sd, pad, enum_frame_interval, subdev_fh->pad, |
35c3017a LP |
379 | fie); |
380 | } | |
ae184cda SA |
381 | |
382 | case VIDIOC_SUBDEV_G_SELECTION: { | |
383 | struct v4l2_subdev_selection *sel = arg; | |
384 | ||
b225e398 SA |
385 | rval = check_selection(sd, sel); |
386 | if (rval) | |
387 | return rval; | |
ae184cda SA |
388 | |
389 | return v4l2_subdev_call( | |
f7234138 | 390 | sd, pad, get_selection, subdev_fh->pad, sel); |
ae184cda SA |
391 | } |
392 | ||
393 | case VIDIOC_SUBDEV_S_SELECTION: { | |
394 | struct v4l2_subdev_selection *sel = arg; | |
395 | ||
b225e398 SA |
396 | rval = check_selection(sd, sel); |
397 | if (rval) | |
398 | return rval; | |
ae184cda SA |
399 | |
400 | return v4l2_subdev_call( | |
f7234138 | 401 | sd, pad, set_selection, subdev_fh->pad, sel); |
ae184cda | 402 | } |
ed45ce2c | 403 | |
f2e90847 LP |
404 | case VIDIOC_G_EDID: { |
405 | struct v4l2_subdev_edid *edid = arg; | |
ed45ce2c | 406 | |
b225e398 SA |
407 | rval = check_edid(sd, edid); |
408 | if (rval) | |
409 | return rval; | |
f2e90847 LP |
410 | |
411 | return v4l2_subdev_call(sd, pad, get_edid, edid); | |
412 | } | |
413 | ||
414 | case VIDIOC_S_EDID: { | |
415 | struct v4l2_subdev_edid *edid = arg; | |
416 | ||
b225e398 SA |
417 | rval = check_edid(sd, edid); |
418 | if (rval) | |
419 | return rval; | |
f2e90847 LP |
420 | |
421 | return v4l2_subdev_call(sd, pad, set_edid, edid); | |
422 | } | |
9cfd65e8 LP |
423 | |
424 | case VIDIOC_SUBDEV_DV_TIMINGS_CAP: { | |
425 | struct v4l2_dv_timings_cap *cap = arg; | |
426 | ||
427 | if (cap->pad >= sd->entity.num_pads) | |
428 | return -EINVAL; | |
429 | ||
430 | return v4l2_subdev_call(sd, pad, dv_timings_cap, cap); | |
431 | } | |
432 | ||
433 | case VIDIOC_SUBDEV_ENUM_DV_TIMINGS: { | |
434 | struct v4l2_enum_dv_timings *dvt = arg; | |
435 | ||
436 | if (dvt->pad >= sd->entity.num_pads) | |
437 | return -EINVAL; | |
438 | ||
439 | return v4l2_subdev_call(sd, pad, enum_dv_timings, dvt); | |
440 | } | |
441 | ||
442 | case VIDIOC_SUBDEV_QUERY_DV_TIMINGS: | |
443 | return v4l2_subdev_call(sd, video, query_dv_timings, arg); | |
444 | ||
445 | case VIDIOC_SUBDEV_G_DV_TIMINGS: | |
446 | return v4l2_subdev_call(sd, video, g_dv_timings, arg); | |
447 | ||
448 | case VIDIOC_SUBDEV_S_DV_TIMINGS: | |
449 | return v4l2_subdev_call(sd, video, s_dv_timings, arg); | |
333c8b97 | 450 | #endif |
2096a5dc | 451 | default: |
c30b46e5 | 452 | return v4l2_subdev_call(sd, core, ioctl, cmd, arg); |
2096a5dc LP |
453 | } |
454 | ||
455 | return 0; | |
456 | } | |
457 | ||
458 | static long subdev_ioctl(struct file *file, unsigned int cmd, | |
459 | unsigned long arg) | |
460 | { | |
461 | return video_usercopy(file, cmd, arg, subdev_do_ioctl); | |
462 | } | |
463 | ||
ab58a301 HV |
464 | #ifdef CONFIG_COMPAT |
465 | static long subdev_compat_ioctl32(struct file *file, unsigned int cmd, | |
466 | unsigned long arg) | |
467 | { | |
468 | struct video_device *vdev = video_devdata(file); | |
469 | struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); | |
470 | ||
471 | return v4l2_subdev_call(sd, core, compat_ioctl32, cmd, arg); | |
472 | } | |
473 | #endif | |
474 | ||
02adb1cc SA |
475 | static unsigned int subdev_poll(struct file *file, poll_table *wait) |
476 | { | |
477 | struct video_device *vdev = video_devdata(file); | |
478 | struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); | |
479 | struct v4l2_fh *fh = file->private_data; | |
480 | ||
481 | if (!(sd->flags & V4L2_SUBDEV_FL_HAS_EVENTS)) | |
482 | return POLLERR; | |
483 | ||
523f46d6 | 484 | poll_wait(file, &fh->wait, wait); |
02adb1cc SA |
485 | |
486 | if (v4l2_event_pending(fh)) | |
487 | return POLLPRI; | |
488 | ||
489 | return 0; | |
490 | } | |
491 | ||
2096a5dc LP |
492 | const struct v4l2_file_operations v4l2_subdev_fops = { |
493 | .owner = THIS_MODULE, | |
494 | .open = subdev_open, | |
495 | .unlocked_ioctl = subdev_ioctl, | |
ab58a301 HV |
496 | #ifdef CONFIG_COMPAT |
497 | .compat_ioctl32 = subdev_compat_ioctl32, | |
498 | #endif | |
2096a5dc | 499 | .release = subdev_close, |
02adb1cc | 500 | .poll = subdev_poll, |
2096a5dc | 501 | }; |
3dd5ee08 | 502 | |
8227c92b SA |
503 | #ifdef CONFIG_MEDIA_CONTROLLER |
504 | int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd, | |
505 | struct media_link *link, | |
506 | struct v4l2_subdev_format *source_fmt, | |
507 | struct v4l2_subdev_format *sink_fmt) | |
508 | { | |
24acf8b2 | 509 | /* The width, height and code must match. */ |
8227c92b SA |
510 | if (source_fmt->format.width != sink_fmt->format.width |
511 | || source_fmt->format.height != sink_fmt->format.height | |
512 | || source_fmt->format.code != sink_fmt->format.code) | |
47dfdb3a | 513 | return -EPIPE; |
8227c92b | 514 | |
24acf8b2 LP |
515 | /* The field order must match, or the sink field order must be NONE |
516 | * to support interlaced hardware connected to bridges that support | |
517 | * progressive formats only. | |
518 | */ | |
519 | if (source_fmt->format.field != sink_fmt->format.field && | |
520 | sink_fmt->format.field != V4L2_FIELD_NONE) | |
47dfdb3a | 521 | return -EPIPE; |
24acf8b2 | 522 | |
8227c92b SA |
523 | return 0; |
524 | } | |
525 | EXPORT_SYMBOL_GPL(v4l2_subdev_link_validate_default); | |
526 | ||
527 | static int | |
528 | v4l2_subdev_link_validate_get_format(struct media_pad *pad, | |
529 | struct v4l2_subdev_format *fmt) | |
530 | { | |
3efdf62c | 531 | if (is_media_entity_v4l2_subdev(pad->entity)) { |
864a1212 LP |
532 | struct v4l2_subdev *sd = |
533 | media_entity_to_v4l2_subdev(pad->entity); | |
534 | ||
8227c92b SA |
535 | fmt->which = V4L2_SUBDEV_FORMAT_ACTIVE; |
536 | fmt->pad = pad->index; | |
864a1212 | 537 | return v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt); |
8227c92b | 538 | } |
864a1212 | 539 | |
4ca72efa | 540 | WARN(pad->entity->function != MEDIA_ENT_F_IO_V4L, |
864a1212 | 541 | "Driver bug! Wrong media entity type 0x%08x, entity %s\n", |
0e576b76 | 542 | pad->entity->function, pad->entity->name); |
864a1212 LP |
543 | |
544 | return -EINVAL; | |
8227c92b SA |
545 | } |
546 | ||
547 | int v4l2_subdev_link_validate(struct media_link *link) | |
548 | { | |
549 | struct v4l2_subdev *sink; | |
550 | struct v4l2_subdev_format sink_fmt, source_fmt; | |
551 | int rval; | |
552 | ||
553 | rval = v4l2_subdev_link_validate_get_format( | |
554 | link->source, &source_fmt); | |
555 | if (rval < 0) | |
556 | return 0; | |
557 | ||
558 | rval = v4l2_subdev_link_validate_get_format( | |
559 | link->sink, &sink_fmt); | |
560 | if (rval < 0) | |
561 | return 0; | |
562 | ||
563 | sink = media_entity_to_v4l2_subdev(link->sink->entity); | |
564 | ||
565 | rval = v4l2_subdev_call(sink, pad, link_validate, link, | |
566 | &source_fmt, &sink_fmt); | |
567 | if (rval != -ENOIOCTLCMD) | |
568 | return rval; | |
569 | ||
570 | return v4l2_subdev_link_validate_default( | |
571 | sink, link, &source_fmt, &sink_fmt); | |
572 | } | |
573 | EXPORT_SYMBOL_GPL(v4l2_subdev_link_validate); | |
9b02cbb3 LP |
574 | |
575 | struct v4l2_subdev_pad_config * | |
576 | v4l2_subdev_alloc_pad_config(struct v4l2_subdev *sd) | |
577 | { | |
578 | struct v4l2_subdev_pad_config *cfg; | |
579 | int ret; | |
580 | ||
581 | if (!sd->entity.num_pads) | |
582 | return NULL; | |
583 | ||
584 | cfg = kcalloc(sd->entity.num_pads, sizeof(*cfg), GFP_KERNEL); | |
585 | if (!cfg) | |
586 | return NULL; | |
587 | ||
588 | ret = v4l2_subdev_call(sd, pad, init_cfg, cfg); | |
589 | if (ret < 0 && ret != -ENOIOCTLCMD) { | |
590 | kfree(cfg); | |
591 | return NULL; | |
592 | } | |
593 | ||
594 | return cfg; | |
595 | } | |
596 | EXPORT_SYMBOL_GPL(v4l2_subdev_alloc_pad_config); | |
597 | ||
598 | void v4l2_subdev_free_pad_config(struct v4l2_subdev_pad_config *cfg) | |
599 | { | |
600 | kfree(cfg); | |
601 | } | |
602 | EXPORT_SYMBOL_GPL(v4l2_subdev_free_pad_config); | |
8227c92b SA |
603 | #endif /* CONFIG_MEDIA_CONTROLLER */ |
604 | ||
3dd5ee08 LP |
605 | void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops) |
606 | { | |
607 | INIT_LIST_HEAD(&sd->list); | |
608 | BUG_ON(!ops); | |
609 | sd->ops = ops; | |
610 | sd->v4l2_dev = NULL; | |
611 | sd->flags = 0; | |
612 | sd->name[0] = '\0'; | |
613 | sd->grp_id = 0; | |
614 | sd->dev_priv = NULL; | |
615 | sd->host_priv = NULL; | |
61f5db54 LP |
616 | #if defined(CONFIG_MEDIA_CONTROLLER) |
617 | sd->entity.name = sd->name; | |
b76a2a8c | 618 | sd->entity.obj_type = MEDIA_ENTITY_TYPE_V4L2_SUBDEV; |
4ca72efa | 619 | sd->entity.function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN; |
61f5db54 | 620 | #endif |
3dd5ee08 LP |
621 | } |
622 | EXPORT_SYMBOL(v4l2_subdev_init); | |
8ae5640f LPC |
623 | |
624 | /** | |
625 | * v4l2_subdev_notify_event() - Delivers event notification for subdevice | |
626 | * @sd: The subdev for which to deliver the event | |
627 | * @ev: The event to deliver | |
628 | * | |
629 | * Will deliver the specified event to all userspace event listeners which are | |
630 | * subscribed to the v42l subdev event queue as well as to the bridge driver | |
631 | * using the notify callback. The notification type for the notify callback | |
632 | * will be V4L2_DEVICE_NOTIFY_EVENT. | |
633 | */ | |
634 | void v4l2_subdev_notify_event(struct v4l2_subdev *sd, | |
635 | const struct v4l2_event *ev) | |
636 | { | |
637 | v4l2_event_queue(sd->devnode, ev); | |
638 | v4l2_subdev_notify(sd, V4L2_DEVICE_NOTIFY_EVENT, (void *)ev); | |
639 | } | |
640 | EXPORT_SYMBOL_GPL(v4l2_subdev_notify_event); |