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 LP |
17 | */ |
18 | ||
2096a5dc | 19 | #include <linux/ioctl.h> |
758d90e1 | 20 | #include <linux/mm.h> |
02adb1cc SA |
21 | #include <linux/slab.h> |
22 | #include <linux/types.h> | |
2096a5dc | 23 | #include <linux/videodev2.h> |
35a24636 | 24 | #include <linux/export.h> |
2096a5dc | 25 | |
ea8aa434 | 26 | #include <media/v4l2-ctrls.h> |
2096a5dc LP |
27 | #include <media/v4l2-device.h> |
28 | #include <media/v4l2-ioctl.h> | |
02adb1cc SA |
29 | #include <media/v4l2-fh.h> |
30 | #include <media/v4l2-event.h> | |
2096a5dc | 31 | |
7cd5a16b SV |
32 | static int subdev_fh_init(struct v4l2_subdev_fh *fh, struct v4l2_subdev *sd) |
33 | { | |
34 | #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) | |
9b02cbb3 LP |
35 | if (sd->entity.num_pads) { |
36 | fh->pad = v4l2_subdev_alloc_pad_config(sd); | |
37 | if (fh->pad == NULL) | |
38 | return -ENOMEM; | |
39 | } | |
7cd5a16b SV |
40 | #endif |
41 | return 0; | |
42 | } | |
43 | ||
44 | static void subdev_fh_free(struct v4l2_subdev_fh *fh) | |
45 | { | |
46 | #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) | |
9b02cbb3 | 47 | v4l2_subdev_free_pad_config(fh->pad); |
ae184cda | 48 | fh->pad = NULL; |
7cd5a16b SV |
49 | #endif |
50 | } | |
51 | ||
2096a5dc LP |
52 | static int subdev_open(struct file *file) |
53 | { | |
02adb1cc SA |
54 | struct video_device *vdev = video_devdata(file); |
55 | struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); | |
7cd5a16b | 56 | struct v4l2_subdev_fh *subdev_fh; |
61f5db54 | 57 | #if defined(CONFIG_MEDIA_CONTROLLER) |
f0beea8f | 58 | struct media_entity *entity = NULL; |
61f5db54 | 59 | #endif |
02adb1cc SA |
60 | int ret; |
61 | ||
7cd5a16b SV |
62 | subdev_fh = kzalloc(sizeof(*subdev_fh), GFP_KERNEL); |
63 | if (subdev_fh == NULL) | |
64 | return -ENOMEM; | |
02adb1cc | 65 | |
7cd5a16b SV |
66 | ret = subdev_fh_init(subdev_fh, sd); |
67 | if (ret) { | |
68 | kfree(subdev_fh); | |
69 | return ret; | |
70 | } | |
71 | ||
523f46d6 | 72 | v4l2_fh_init(&subdev_fh->vfh, vdev); |
7cd5a16b SV |
73 | v4l2_fh_add(&subdev_fh->vfh); |
74 | file->private_data = &subdev_fh->vfh; | |
61f5db54 LP |
75 | #if defined(CONFIG_MEDIA_CONTROLLER) |
76 | if (sd->v4l2_dev->mdev) { | |
77 | entity = media_entity_get(&sd->entity); | |
78 | if (!entity) { | |
79 | ret = -EBUSY; | |
80 | goto err; | |
81 | } | |
82 | } | |
83 | #endif | |
7cd5a16b | 84 | |
f0beea8f LP |
85 | if (sd->internal_ops && sd->internal_ops->open) { |
86 | ret = sd->internal_ops->open(sd, subdev_fh); | |
87 | if (ret < 0) | |
88 | goto err; | |
89 | } | |
90 | ||
2096a5dc | 91 | return 0; |
02adb1cc SA |
92 | |
93 | err: | |
f0beea8f | 94 | #if defined(CONFIG_MEDIA_CONTROLLER) |
5164d6aa | 95 | media_entity_put(entity); |
f0beea8f | 96 | #endif |
7cd5a16b SV |
97 | v4l2_fh_del(&subdev_fh->vfh); |
98 | v4l2_fh_exit(&subdev_fh->vfh); | |
99 | subdev_fh_free(subdev_fh); | |
100 | kfree(subdev_fh); | |
02adb1cc SA |
101 | |
102 | return ret; | |
2096a5dc LP |
103 | } |
104 | ||
105 | static int subdev_close(struct file *file) | |
106 | { | |
61f5db54 LP |
107 | struct video_device *vdev = video_devdata(file); |
108 | struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); | |
02adb1cc | 109 | struct v4l2_fh *vfh = file->private_data; |
7cd5a16b | 110 | struct v4l2_subdev_fh *subdev_fh = to_v4l2_subdev_fh(vfh); |
02adb1cc | 111 | |
f0beea8f LP |
112 | if (sd->internal_ops && sd->internal_ops->close) |
113 | sd->internal_ops->close(sd, subdev_fh); | |
61f5db54 LP |
114 | #if defined(CONFIG_MEDIA_CONTROLLER) |
115 | if (sd->v4l2_dev->mdev) | |
116 | media_entity_put(&sd->entity); | |
117 | #endif | |
7cd5a16b SV |
118 | v4l2_fh_del(vfh); |
119 | v4l2_fh_exit(vfh); | |
120 | subdev_fh_free(subdev_fh); | |
121 | kfree(subdev_fh); | |
122 | file->private_data = NULL; | |
02adb1cc | 123 | |
2096a5dc LP |
124 | return 0; |
125 | } | |
126 | ||
d352bcc9 | 127 | #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) |
b225e398 SA |
128 | static int check_format(struct v4l2_subdev *sd, |
129 | struct v4l2_subdev_format *format) | |
130 | { | |
131 | if (format->which != V4L2_SUBDEV_FORMAT_TRY && | |
132 | format->which != V4L2_SUBDEV_FORMAT_ACTIVE) | |
133 | return -EINVAL; | |
134 | ||
135 | if (format->pad >= sd->entity.num_pads) | |
136 | return -EINVAL; | |
137 | ||
138 | return 0; | |
139 | } | |
140 | ||
141 | static int check_crop(struct v4l2_subdev *sd, struct v4l2_subdev_crop *crop) | |
142 | { | |
143 | if (crop->which != V4L2_SUBDEV_FORMAT_TRY && | |
144 | crop->which != V4L2_SUBDEV_FORMAT_ACTIVE) | |
145 | return -EINVAL; | |
146 | ||
147 | if (crop->pad >= sd->entity.num_pads) | |
148 | return -EINVAL; | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
153 | static int check_selection(struct v4l2_subdev *sd, | |
154 | struct v4l2_subdev_selection *sel) | |
155 | { | |
156 | if (sel->which != V4L2_SUBDEV_FORMAT_TRY && | |
157 | sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) | |
158 | return -EINVAL; | |
159 | ||
160 | if (sel->pad >= sd->entity.num_pads) | |
161 | return -EINVAL; | |
162 | ||
163 | return 0; | |
164 | } | |
165 | ||
166 | static int check_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) | |
167 | { | |
168 | if (edid->pad >= sd->entity.num_pads) | |
169 | return -EINVAL; | |
170 | ||
171 | if (edid->blocks && edid->edid == NULL) | |
172 | return -EINVAL; | |
173 | ||
174 | return 0; | |
175 | } | |
d352bcc9 | 176 | #endif |
b225e398 | 177 | |
2096a5dc LP |
178 | static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg) |
179 | { | |
ea8aa434 LP |
180 | struct video_device *vdev = video_devdata(file); |
181 | struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); | |
7cd5a16b | 182 | struct v4l2_fh *vfh = file->private_data; |
333c8b97 LP |
183 | #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) |
184 | struct v4l2_subdev_fh *subdev_fh = to_v4l2_subdev_fh(vfh); | |
b225e398 | 185 | int rval; |
d352bcc9 | 186 | #endif |
ea8aa434 | 187 | |
2096a5dc | 188 | switch (cmd) { |
ea8aa434 | 189 | case VIDIOC_QUERYCTRL: |
18d171ba | 190 | return v4l2_queryctrl(vfh->ctrl_handler, arg); |
ea8aa434 | 191 | |
e6bee368 HV |
192 | case VIDIOC_QUERY_EXT_CTRL: |
193 | return v4l2_query_ext_ctrl(vfh->ctrl_handler, arg); | |
194 | ||
ea8aa434 | 195 | case VIDIOC_QUERYMENU: |
18d171ba | 196 | return v4l2_querymenu(vfh->ctrl_handler, arg); |
ea8aa434 LP |
197 | |
198 | case VIDIOC_G_CTRL: | |
18d171ba | 199 | return v4l2_g_ctrl(vfh->ctrl_handler, arg); |
ea8aa434 LP |
200 | |
201 | case VIDIOC_S_CTRL: | |
ab892bac | 202 | return v4l2_s_ctrl(vfh, vfh->ctrl_handler, arg); |
ea8aa434 LP |
203 | |
204 | case VIDIOC_G_EXT_CTRLS: | |
18d171ba | 205 | return v4l2_g_ext_ctrls(vfh->ctrl_handler, arg); |
ea8aa434 LP |
206 | |
207 | case VIDIOC_S_EXT_CTRLS: | |
ab892bac | 208 | return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, arg); |
ea8aa434 LP |
209 | |
210 | case VIDIOC_TRY_EXT_CTRLS: | |
18d171ba | 211 | return v4l2_try_ext_ctrls(vfh->ctrl_handler, arg); |
ea8aa434 | 212 | |
02adb1cc SA |
213 | case VIDIOC_DQEVENT: |
214 | if (!(sd->flags & V4L2_SUBDEV_FL_HAS_EVENTS)) | |
215 | return -ENOIOCTLCMD; | |
216 | ||
7cd5a16b | 217 | return v4l2_event_dequeue(vfh, arg, file->f_flags & O_NONBLOCK); |
02adb1cc SA |
218 | |
219 | case VIDIOC_SUBSCRIBE_EVENT: | |
7cd5a16b | 220 | return v4l2_subdev_call(sd, core, subscribe_event, vfh, arg); |
02adb1cc SA |
221 | |
222 | case VIDIOC_UNSUBSCRIBE_EVENT: | |
7cd5a16b | 223 | return v4l2_subdev_call(sd, core, unsubscribe_event, vfh, arg); |
69967a71 MH |
224 | |
225 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
226 | case VIDIOC_DBG_G_REGISTER: | |
227 | { | |
228 | struct v4l2_dbg_register *p = arg; | |
229 | ||
230 | if (!capable(CAP_SYS_ADMIN)) | |
231 | return -EPERM; | |
232 | return v4l2_subdev_call(sd, core, g_register, p); | |
233 | } | |
234 | case VIDIOC_DBG_S_REGISTER: | |
235 | { | |
236 | struct v4l2_dbg_register *p = arg; | |
237 | ||
238 | if (!capable(CAP_SYS_ADMIN)) | |
239 | return -EPERM; | |
240 | return v4l2_subdev_call(sd, core, s_register, p); | |
241 | } | |
242 | #endif | |
bcd158de | 243 | |
42194e72 HV |
244 | case VIDIOC_LOG_STATUS: { |
245 | int ret; | |
246 | ||
247 | pr_info("%s: ================= START STATUS =================\n", | |
248 | sd->name); | |
249 | ret = v4l2_subdev_call(sd, core, log_status); | |
250 | pr_info("%s: ================== END STATUS ==================\n", | |
251 | sd->name); | |
252 | return ret; | |
253 | } | |
bcd158de | 254 | |
333c8b97 LP |
255 | #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) |
256 | case VIDIOC_SUBDEV_G_FMT: { | |
257 | struct v4l2_subdev_format *format = arg; | |
258 | ||
b225e398 SA |
259 | rval = check_format(sd, format); |
260 | if (rval) | |
261 | return rval; | |
333c8b97 | 262 | |
f7234138 | 263 | return v4l2_subdev_call(sd, pad, get_fmt, subdev_fh->pad, format); |
333c8b97 LP |
264 | } |
265 | ||
266 | case VIDIOC_SUBDEV_S_FMT: { | |
267 | struct v4l2_subdev_format *format = arg; | |
268 | ||
b225e398 SA |
269 | rval = check_format(sd, format); |
270 | if (rval) | |
271 | return rval; | |
02adb1cc | 272 | |
f7234138 | 273 | return v4l2_subdev_call(sd, pad, set_fmt, subdev_fh->pad, format); |
333c8b97 LP |
274 | } |
275 | ||
f6a5cb1b AK |
276 | case VIDIOC_SUBDEV_G_CROP: { |
277 | struct v4l2_subdev_crop *crop = arg; | |
5b9d770f | 278 | struct v4l2_subdev_selection sel; |
f6a5cb1b | 279 | |
b225e398 SA |
280 | rval = check_crop(sd, crop); |
281 | if (rval) | |
282 | return rval; | |
f6a5cb1b | 283 | |
5b9d770f SA |
284 | memset(&sel, 0, sizeof(sel)); |
285 | sel.which = crop->which; | |
286 | sel.pad = crop->pad; | |
5689b288 | 287 | sel.target = V4L2_SEL_TGT_CROP; |
5b9d770f SA |
288 | |
289 | rval = v4l2_subdev_call( | |
f7234138 | 290 | sd, pad, get_selection, subdev_fh->pad, &sel); |
5b9d770f SA |
291 | |
292 | crop->rect = sel.r; | |
293 | ||
294 | return rval; | |
f6a5cb1b AK |
295 | } |
296 | ||
297 | case VIDIOC_SUBDEV_S_CROP: { | |
298 | struct v4l2_subdev_crop *crop = arg; | |
5b9d770f | 299 | struct v4l2_subdev_selection sel; |
f6a5cb1b | 300 | |
b225e398 SA |
301 | rval = check_crop(sd, crop); |
302 | if (rval) | |
303 | return rval; | |
f6a5cb1b | 304 | |
5b9d770f SA |
305 | memset(&sel, 0, sizeof(sel)); |
306 | sel.which = crop->which; | |
307 | sel.pad = crop->pad; | |
5689b288 | 308 | sel.target = V4L2_SEL_TGT_CROP; |
5b9d770f SA |
309 | sel.r = crop->rect; |
310 | ||
311 | rval = v4l2_subdev_call( | |
f7234138 | 312 | sd, pad, set_selection, subdev_fh->pad, &sel); |
5b9d770f SA |
313 | |
314 | crop->rect = sel.r; | |
315 | ||
316 | return rval; | |
f6a5cb1b AK |
317 | } |
318 | ||
333c8b97 LP |
319 | case VIDIOC_SUBDEV_ENUM_MBUS_CODE: { |
320 | struct v4l2_subdev_mbus_code_enum *code = arg; | |
321 | ||
20058f90 HV |
322 | if (code->which != V4L2_SUBDEV_FORMAT_TRY && |
323 | code->which != V4L2_SUBDEV_FORMAT_ACTIVE) | |
324 | return -EINVAL; | |
325 | ||
333c8b97 LP |
326 | if (code->pad >= sd->entity.num_pads) |
327 | return -EINVAL; | |
328 | ||
f7234138 | 329 | return v4l2_subdev_call(sd, pad, enum_mbus_code, subdev_fh->pad, |
333c8b97 LP |
330 | code); |
331 | } | |
332 | ||
333 | case VIDIOC_SUBDEV_ENUM_FRAME_SIZE: { | |
334 | struct v4l2_subdev_frame_size_enum *fse = arg; | |
335 | ||
20058f90 HV |
336 | if (fse->which != V4L2_SUBDEV_FORMAT_TRY && |
337 | fse->which != V4L2_SUBDEV_FORMAT_ACTIVE) | |
338 | return -EINVAL; | |
339 | ||
333c8b97 LP |
340 | if (fse->pad >= sd->entity.num_pads) |
341 | return -EINVAL; | |
342 | ||
f7234138 | 343 | return v4l2_subdev_call(sd, pad, enum_frame_size, subdev_fh->pad, |
333c8b97 LP |
344 | fse); |
345 | } | |
35c3017a | 346 | |
743e1837 SA |
347 | case VIDIOC_SUBDEV_G_FRAME_INTERVAL: { |
348 | struct v4l2_subdev_frame_interval *fi = arg; | |
349 | ||
350 | if (fi->pad >= sd->entity.num_pads) | |
351 | return -EINVAL; | |
352 | ||
35c3017a | 353 | return v4l2_subdev_call(sd, video, g_frame_interval, arg); |
743e1837 SA |
354 | } |
355 | ||
356 | case VIDIOC_SUBDEV_S_FRAME_INTERVAL: { | |
357 | struct v4l2_subdev_frame_interval *fi = arg; | |
358 | ||
359 | if (fi->pad >= sd->entity.num_pads) | |
360 | return -EINVAL; | |
35c3017a | 361 | |
35c3017a | 362 | return v4l2_subdev_call(sd, video, s_frame_interval, arg); |
743e1837 | 363 | } |
35c3017a LP |
364 | |
365 | case VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL: { | |
366 | struct v4l2_subdev_frame_interval_enum *fie = arg; | |
367 | ||
20058f90 HV |
368 | if (fie->which != V4L2_SUBDEV_FORMAT_TRY && |
369 | fie->which != V4L2_SUBDEV_FORMAT_ACTIVE) | |
370 | return -EINVAL; | |
371 | ||
35c3017a LP |
372 | if (fie->pad >= sd->entity.num_pads) |
373 | return -EINVAL; | |
374 | ||
f7234138 | 375 | return v4l2_subdev_call(sd, pad, enum_frame_interval, subdev_fh->pad, |
35c3017a LP |
376 | fie); |
377 | } | |
ae184cda SA |
378 | |
379 | case VIDIOC_SUBDEV_G_SELECTION: { | |
380 | struct v4l2_subdev_selection *sel = arg; | |
381 | ||
b225e398 SA |
382 | rval = check_selection(sd, sel); |
383 | if (rval) | |
384 | return rval; | |
ae184cda SA |
385 | |
386 | return v4l2_subdev_call( | |
f7234138 | 387 | sd, pad, get_selection, subdev_fh->pad, sel); |
ae184cda SA |
388 | } |
389 | ||
390 | case VIDIOC_SUBDEV_S_SELECTION: { | |
391 | struct v4l2_subdev_selection *sel = arg; | |
392 | ||
b225e398 SA |
393 | rval = check_selection(sd, sel); |
394 | if (rval) | |
395 | return rval; | |
ae184cda SA |
396 | |
397 | return v4l2_subdev_call( | |
f7234138 | 398 | sd, pad, set_selection, subdev_fh->pad, sel); |
ae184cda | 399 | } |
ed45ce2c | 400 | |
f2e90847 LP |
401 | case VIDIOC_G_EDID: { |
402 | struct v4l2_subdev_edid *edid = arg; | |
ed45ce2c | 403 | |
b225e398 SA |
404 | rval = check_edid(sd, edid); |
405 | if (rval) | |
406 | return rval; | |
f2e90847 LP |
407 | |
408 | return v4l2_subdev_call(sd, pad, get_edid, edid); | |
409 | } | |
410 | ||
411 | case VIDIOC_S_EDID: { | |
412 | struct v4l2_subdev_edid *edid = arg; | |
413 | ||
b225e398 SA |
414 | rval = check_edid(sd, edid); |
415 | if (rval) | |
416 | return rval; | |
f2e90847 LP |
417 | |
418 | return v4l2_subdev_call(sd, pad, set_edid, edid); | |
419 | } | |
9cfd65e8 LP |
420 | |
421 | case VIDIOC_SUBDEV_DV_TIMINGS_CAP: { | |
422 | struct v4l2_dv_timings_cap *cap = arg; | |
423 | ||
424 | if (cap->pad >= sd->entity.num_pads) | |
425 | return -EINVAL; | |
426 | ||
427 | return v4l2_subdev_call(sd, pad, dv_timings_cap, cap); | |
428 | } | |
429 | ||
430 | case VIDIOC_SUBDEV_ENUM_DV_TIMINGS: { | |
431 | struct v4l2_enum_dv_timings *dvt = arg; | |
432 | ||
433 | if (dvt->pad >= sd->entity.num_pads) | |
434 | return -EINVAL; | |
435 | ||
436 | return v4l2_subdev_call(sd, pad, enum_dv_timings, dvt); | |
437 | } | |
438 | ||
439 | case VIDIOC_SUBDEV_QUERY_DV_TIMINGS: | |
440 | return v4l2_subdev_call(sd, video, query_dv_timings, arg); | |
441 | ||
442 | case VIDIOC_SUBDEV_G_DV_TIMINGS: | |
443 | return v4l2_subdev_call(sd, video, g_dv_timings, arg); | |
444 | ||
445 | case VIDIOC_SUBDEV_S_DV_TIMINGS: | |
446 | return v4l2_subdev_call(sd, video, s_dv_timings, arg); | |
333c8b97 | 447 | #endif |
2096a5dc | 448 | default: |
c30b46e5 | 449 | return v4l2_subdev_call(sd, core, ioctl, cmd, arg); |
2096a5dc LP |
450 | } |
451 | ||
452 | return 0; | |
453 | } | |
454 | ||
455 | static long subdev_ioctl(struct file *file, unsigned int cmd, | |
456 | unsigned long arg) | |
457 | { | |
458 | return video_usercopy(file, cmd, arg, subdev_do_ioctl); | |
459 | } | |
460 | ||
ab58a301 HV |
461 | #ifdef CONFIG_COMPAT |
462 | static long subdev_compat_ioctl32(struct file *file, unsigned int cmd, | |
463 | unsigned long arg) | |
464 | { | |
465 | struct video_device *vdev = video_devdata(file); | |
466 | struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); | |
467 | ||
468 | return v4l2_subdev_call(sd, core, compat_ioctl32, cmd, arg); | |
469 | } | |
470 | #endif | |
471 | ||
c23e0cb8 | 472 | static __poll_t subdev_poll(struct file *file, poll_table *wait) |
02adb1cc SA |
473 | { |
474 | struct video_device *vdev = video_devdata(file); | |
475 | struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev); | |
476 | struct v4l2_fh *fh = file->private_data; | |
477 | ||
478 | if (!(sd->flags & V4L2_SUBDEV_FL_HAS_EVENTS)) | |
a9a08845 | 479 | return EPOLLERR; |
02adb1cc | 480 | |
523f46d6 | 481 | poll_wait(file, &fh->wait, wait); |
02adb1cc SA |
482 | |
483 | if (v4l2_event_pending(fh)) | |
a9a08845 | 484 | return EPOLLPRI; |
02adb1cc SA |
485 | |
486 | return 0; | |
487 | } | |
488 | ||
2096a5dc LP |
489 | const struct v4l2_file_operations v4l2_subdev_fops = { |
490 | .owner = THIS_MODULE, | |
491 | .open = subdev_open, | |
492 | .unlocked_ioctl = subdev_ioctl, | |
ab58a301 HV |
493 | #ifdef CONFIG_COMPAT |
494 | .compat_ioctl32 = subdev_compat_ioctl32, | |
495 | #endif | |
2096a5dc | 496 | .release = subdev_close, |
02adb1cc | 497 | .poll = subdev_poll, |
2096a5dc | 498 | }; |
3dd5ee08 | 499 | |
8227c92b SA |
500 | #ifdef CONFIG_MEDIA_CONTROLLER |
501 | int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd, | |
502 | struct media_link *link, | |
503 | struct v4l2_subdev_format *source_fmt, | |
504 | struct v4l2_subdev_format *sink_fmt) | |
505 | { | |
24acf8b2 | 506 | /* The width, height and code must match. */ |
8227c92b SA |
507 | if (source_fmt->format.width != sink_fmt->format.width |
508 | || source_fmt->format.height != sink_fmt->format.height | |
509 | || source_fmt->format.code != sink_fmt->format.code) | |
47dfdb3a | 510 | return -EPIPE; |
8227c92b | 511 | |
24acf8b2 LP |
512 | /* The field order must match, or the sink field order must be NONE |
513 | * to support interlaced hardware connected to bridges that support | |
514 | * progressive formats only. | |
515 | */ | |
516 | if (source_fmt->format.field != sink_fmt->format.field && | |
517 | sink_fmt->format.field != V4L2_FIELD_NONE) | |
47dfdb3a | 518 | return -EPIPE; |
24acf8b2 | 519 | |
8227c92b SA |
520 | return 0; |
521 | } | |
522 | EXPORT_SYMBOL_GPL(v4l2_subdev_link_validate_default); | |
523 | ||
524 | static int | |
525 | v4l2_subdev_link_validate_get_format(struct media_pad *pad, | |
526 | struct v4l2_subdev_format *fmt) | |
527 | { | |
3efdf62c | 528 | if (is_media_entity_v4l2_subdev(pad->entity)) { |
864a1212 LP |
529 | struct v4l2_subdev *sd = |
530 | media_entity_to_v4l2_subdev(pad->entity); | |
531 | ||
8227c92b SA |
532 | fmt->which = V4L2_SUBDEV_FORMAT_ACTIVE; |
533 | fmt->pad = pad->index; | |
864a1212 | 534 | return v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt); |
8227c92b | 535 | } |
864a1212 | 536 | |
4ca72efa | 537 | WARN(pad->entity->function != MEDIA_ENT_F_IO_V4L, |
864a1212 | 538 | "Driver bug! Wrong media entity type 0x%08x, entity %s\n", |
0e576b76 | 539 | pad->entity->function, pad->entity->name); |
864a1212 LP |
540 | |
541 | return -EINVAL; | |
8227c92b SA |
542 | } |
543 | ||
544 | int v4l2_subdev_link_validate(struct media_link *link) | |
545 | { | |
546 | struct v4l2_subdev *sink; | |
547 | struct v4l2_subdev_format sink_fmt, source_fmt; | |
548 | int rval; | |
549 | ||
550 | rval = v4l2_subdev_link_validate_get_format( | |
551 | link->source, &source_fmt); | |
552 | if (rval < 0) | |
553 | return 0; | |
554 | ||
555 | rval = v4l2_subdev_link_validate_get_format( | |
556 | link->sink, &sink_fmt); | |
557 | if (rval < 0) | |
558 | return 0; | |
559 | ||
560 | sink = media_entity_to_v4l2_subdev(link->sink->entity); | |
561 | ||
562 | rval = v4l2_subdev_call(sink, pad, link_validate, link, | |
563 | &source_fmt, &sink_fmt); | |
564 | if (rval != -ENOIOCTLCMD) | |
565 | return rval; | |
566 | ||
567 | return v4l2_subdev_link_validate_default( | |
568 | sink, link, &source_fmt, &sink_fmt); | |
569 | } | |
570 | EXPORT_SYMBOL_GPL(v4l2_subdev_link_validate); | |
9b02cbb3 LP |
571 | |
572 | struct v4l2_subdev_pad_config * | |
573 | v4l2_subdev_alloc_pad_config(struct v4l2_subdev *sd) | |
574 | { | |
575 | struct v4l2_subdev_pad_config *cfg; | |
576 | int ret; | |
577 | ||
578 | if (!sd->entity.num_pads) | |
579 | return NULL; | |
580 | ||
758d90e1 TF |
581 | cfg = kvmalloc_array(sd->entity.num_pads, sizeof(*cfg), |
582 | GFP_KERNEL | __GFP_ZERO); | |
9b02cbb3 LP |
583 | if (!cfg) |
584 | return NULL; | |
585 | ||
586 | ret = v4l2_subdev_call(sd, pad, init_cfg, cfg); | |
587 | if (ret < 0 && ret != -ENOIOCTLCMD) { | |
758d90e1 | 588 | kvfree(cfg); |
9b02cbb3 LP |
589 | return NULL; |
590 | } | |
591 | ||
592 | return cfg; | |
593 | } | |
594 | EXPORT_SYMBOL_GPL(v4l2_subdev_alloc_pad_config); | |
595 | ||
596 | void v4l2_subdev_free_pad_config(struct v4l2_subdev_pad_config *cfg) | |
597 | { | |
758d90e1 | 598 | kvfree(cfg); |
9b02cbb3 LP |
599 | } |
600 | EXPORT_SYMBOL_GPL(v4l2_subdev_free_pad_config); | |
8227c92b SA |
601 | #endif /* CONFIG_MEDIA_CONTROLLER */ |
602 | ||
3dd5ee08 LP |
603 | void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops) |
604 | { | |
605 | INIT_LIST_HEAD(&sd->list); | |
606 | BUG_ON(!ops); | |
607 | sd->ops = ops; | |
608 | sd->v4l2_dev = NULL; | |
609 | sd->flags = 0; | |
610 | sd->name[0] = '\0'; | |
611 | sd->grp_id = 0; | |
612 | sd->dev_priv = NULL; | |
613 | sd->host_priv = NULL; | |
61f5db54 LP |
614 | #if defined(CONFIG_MEDIA_CONTROLLER) |
615 | sd->entity.name = sd->name; | |
b76a2a8c | 616 | sd->entity.obj_type = MEDIA_ENTITY_TYPE_V4L2_SUBDEV; |
4ca72efa | 617 | sd->entity.function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN; |
61f5db54 | 618 | #endif |
3dd5ee08 LP |
619 | } |
620 | EXPORT_SYMBOL(v4l2_subdev_init); | |
8ae5640f | 621 | |
8ae5640f LPC |
622 | void v4l2_subdev_notify_event(struct v4l2_subdev *sd, |
623 | const struct v4l2_event *ev) | |
624 | { | |
625 | v4l2_event_queue(sd->devnode, ev); | |
626 | v4l2_subdev_notify(sd, V4L2_DEVICE_NOTIFY_EVENT, (void *)ev); | |
627 | } | |
628 | EXPORT_SYMBOL_GPL(v4l2_subdev_notify_event); |