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19#include <linux/device.h>
20#include <linux/err.h>
21#include <linux/i2c.h>
22#include <linux/init.h>
23#include <linux/list.h>
24#include <linux/mutex.h>
25#include <linux/module.h>
26#include <linux/platform_device.h>
27#include <linux/regulator/consumer.h>
28#include <linux/slab.h>
29#include <linux/pm_runtime.h>
30#include <linux/vmalloc.h>
31
32#include <media/soc_camera.h>
33#include <media/v4l2-common.h>
34#include <media/v4l2-ioctl.h>
35#include <media/v4l2-dev.h>
36#include <media/videobuf-core.h>
37#include <media/videobuf2-core.h>
38#include <media/soc_mediabus.h>
39
40
41#define DEFAULT_WIDTH 640
42#define DEFAULT_HEIGHT 480
43
44#define is_streaming(ici, icd) \
45 (((ici)->ops->init_videobuf) ? \
46 (icd)->vb_vidq.streaming : \
47 vb2_is_streaming(&(icd)->vb2_vidq))
48
49static LIST_HEAD(hosts);
50static LIST_HEAD(devices);
51static DEFINE_MUTEX(list_lock);
52
53int soc_camera_power_on(struct device *dev, struct soc_camera_subdev_desc *ssdd)
54{
55 int ret = regulator_bulk_enable(ssdd->num_regulators,
56 ssdd->regulators);
57 if (ret < 0) {
58 dev_err(dev, "Cannot enable regulators\n");
59 return ret;
60 }
61
62 if (ssdd->power) {
63 ret = ssdd->power(dev, 1);
64 if (ret < 0) {
65 dev_err(dev,
66 "Platform failed to power-on the camera.\n");
67 regulator_bulk_disable(ssdd->num_regulators,
68 ssdd->regulators);
69 }
70 }
71
72 return ret;
73}
74EXPORT_SYMBOL(soc_camera_power_on);
75
76int soc_camera_power_off(struct device *dev, struct soc_camera_subdev_desc *ssdd)
77{
78 int ret = 0;
79 int err;
80
81 if (ssdd->power) {
82 err = ssdd->power(dev, 0);
83 if (err < 0) {
84 dev_err(dev,
85 "Platform failed to power-off the camera.\n");
86 ret = err;
87 }
88 }
89
90 err = regulator_bulk_disable(ssdd->num_regulators,
91 ssdd->regulators);
92 if (err < 0) {
93 dev_err(dev, "Cannot disable regulators\n");
94 ret = ret ? : err;
95 }
96
97 return ret;
98}
99EXPORT_SYMBOL(soc_camera_power_off);
100
101static int __soc_camera_power_on(struct soc_camera_device *icd)
102{
103 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
104 int ret;
105
106 ret = v4l2_subdev_call(sd, core, s_power, 1);
107 if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
108 return ret;
109
110 return 0;
111}
112
113static int __soc_camera_power_off(struct soc_camera_device *icd)
114{
115 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
116 int ret;
117
118 ret = v4l2_subdev_call(sd, core, s_power, 0);
119 if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
120 return ret;
121
122 return 0;
123}
124
125const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc(
126 struct soc_camera_device *icd, unsigned int fourcc)
127{
128 unsigned int i;
129
130 for (i = 0; i < icd->num_user_formats; i++)
131 if (icd->user_formats[i].host_fmt->fourcc == fourcc)
132 return icd->user_formats + i;
133 return NULL;
134}
135EXPORT_SYMBOL(soc_camera_xlate_by_fourcc);
136
137
138
139
140
141
142
143unsigned long soc_camera_apply_board_flags(struct soc_camera_subdev_desc *ssdd,
144 const struct v4l2_mbus_config *cfg)
145{
146 unsigned long f, flags = cfg->flags;
147
148
149 if (ssdd->flags & SOCAM_SENSOR_INVERT_HSYNC) {
150 f = flags & (V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW);
151 if (f == V4L2_MBUS_HSYNC_ACTIVE_HIGH || f == V4L2_MBUS_HSYNC_ACTIVE_LOW)
152 flags ^= V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW;
153 }
154
155 if (ssdd->flags & SOCAM_SENSOR_INVERT_VSYNC) {
156 f = flags & (V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW);
157 if (f == V4L2_MBUS_VSYNC_ACTIVE_HIGH || f == V4L2_MBUS_VSYNC_ACTIVE_LOW)
158 flags ^= V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW;
159 }
160
161 if (ssdd->flags & SOCAM_SENSOR_INVERT_PCLK) {
162 f = flags & (V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING);
163 if (f == V4L2_MBUS_PCLK_SAMPLE_RISING || f == V4L2_MBUS_PCLK_SAMPLE_FALLING)
164 flags ^= V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING;
165 }
166
167 return flags;
168}
169EXPORT_SYMBOL(soc_camera_apply_board_flags);
170
171#define pixfmtstr(x) (x) & 0xff, ((x) >> 8) & 0xff, ((x) >> 16) & 0xff, \
172 ((x) >> 24) & 0xff
173
174static int soc_camera_try_fmt(struct soc_camera_device *icd,
175 struct v4l2_format *f)
176{
177 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
178 const struct soc_camera_format_xlate *xlate;
179 struct v4l2_pix_format *pix = &f->fmt.pix;
180 int ret;
181
182 dev_dbg(icd->pdev, "TRY_FMT(%c%c%c%c, %ux%u)\n",
183 pixfmtstr(pix->pixelformat), pix->width, pix->height);
184
185 if (pix->pixelformat != V4L2_PIX_FMT_JPEG &&
186 !(ici->capabilities & SOCAM_HOST_CAP_STRIDE)) {
187 pix->bytesperline = 0;
188 pix->sizeimage = 0;
189 }
190
191 ret = ici->ops->try_fmt(icd, f);
192 if (ret < 0)
193 return ret;
194
195 xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
196 if (!xlate)
197 return -EINVAL;
198
199 ret = soc_mbus_bytes_per_line(pix->width, xlate->host_fmt);
200 if (ret < 0)
201 return ret;
202
203 pix->bytesperline = max_t(u32, pix->bytesperline, ret);
204
205 ret = soc_mbus_image_size(xlate->host_fmt, pix->bytesperline,
206 pix->height);
207 if (ret < 0)
208 return ret;
209
210 pix->sizeimage = max_t(u32, pix->sizeimage, ret);
211
212 return 0;
213}
214
215static int soc_camera_try_fmt_vid_cap(struct file *file, void *priv,
216 struct v4l2_format *f)
217{
218 struct soc_camera_device *icd = file->private_data;
219
220 WARN_ON(priv != file->private_data);
221
222
223 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
224 return -EINVAL;
225
226
227 return soc_camera_try_fmt(icd, f);
228}
229
230static int soc_camera_enum_input(struct file *file, void *priv,
231 struct v4l2_input *inp)
232{
233 if (inp->index != 0)
234 return -EINVAL;
235
236
237 inp->type = V4L2_INPUT_TYPE_CAMERA;
238 inp->std = V4L2_STD_UNKNOWN;
239 strcpy(inp->name, "Camera");
240
241 return 0;
242}
243
244static int soc_camera_g_input(struct file *file, void *priv, unsigned int *i)
245{
246 *i = 0;
247
248 return 0;
249}
250
251static int soc_camera_s_input(struct file *file, void *priv, unsigned int i)
252{
253 if (i > 0)
254 return -EINVAL;
255
256 return 0;
257}
258
259static int soc_camera_s_std(struct file *file, void *priv, v4l2_std_id a)
260{
261 struct soc_camera_device *icd = file->private_data;
262 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
263
264 return v4l2_subdev_call(sd, core, s_std, a);
265}
266
267static int soc_camera_g_std(struct file *file, void *priv, v4l2_std_id *a)
268{
269 struct soc_camera_device *icd = file->private_data;
270 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
271
272 return v4l2_subdev_call(sd, core, g_std, a);
273}
274
275static int soc_camera_enum_framesizes(struct file *file, void *fh,
276 struct v4l2_frmsizeenum *fsize)
277{
278 struct soc_camera_device *icd = file->private_data;
279 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
280
281 return ici->ops->enum_framesizes(icd, fsize);
282}
283
284static int soc_camera_reqbufs(struct file *file, void *priv,
285 struct v4l2_requestbuffers *p)
286{
287 int ret;
288 struct soc_camera_device *icd = file->private_data;
289 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
290
291 WARN_ON(priv != file->private_data);
292
293 if (icd->streamer && icd->streamer != file)
294 return -EBUSY;
295
296 if (ici->ops->init_videobuf) {
297 ret = videobuf_reqbufs(&icd->vb_vidq, p);
298 if (ret < 0)
299 return ret;
300
301 ret = ici->ops->reqbufs(icd, p);
302 } else {
303 ret = vb2_reqbufs(&icd->vb2_vidq, p);
304 }
305
306 if (!ret && !icd->streamer)
307 icd->streamer = file;
308
309 return ret;
310}
311
312static int soc_camera_querybuf(struct file *file, void *priv,
313 struct v4l2_buffer *p)
314{
315 struct soc_camera_device *icd = file->private_data;
316 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
317
318 WARN_ON(priv != file->private_data);
319
320 if (ici->ops->init_videobuf)
321 return videobuf_querybuf(&icd->vb_vidq, p);
322 else
323 return vb2_querybuf(&icd->vb2_vidq, p);
324}
325
326static int soc_camera_qbuf(struct file *file, void *priv,
327 struct v4l2_buffer *p)
328{
329 struct soc_camera_device *icd = file->private_data;
330 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
331
332 WARN_ON(priv != file->private_data);
333
334 if (icd->streamer != file)
335 return -EBUSY;
336
337 if (ici->ops->init_videobuf)
338 return videobuf_qbuf(&icd->vb_vidq, p);
339 else
340 return vb2_qbuf(&icd->vb2_vidq, p);
341}
342
343static int soc_camera_dqbuf(struct file *file, void *priv,
344 struct v4l2_buffer *p)
345{
346 struct soc_camera_device *icd = file->private_data;
347 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
348
349 WARN_ON(priv != file->private_data);
350
351 if (icd->streamer != file)
352 return -EBUSY;
353
354 if (ici->ops->init_videobuf)
355 return videobuf_dqbuf(&icd->vb_vidq, p, file->f_flags & O_NONBLOCK);
356 else
357 return vb2_dqbuf(&icd->vb2_vidq, p, file->f_flags & O_NONBLOCK);
358}
359
360static int soc_camera_create_bufs(struct file *file, void *priv,
361 struct v4l2_create_buffers *create)
362{
363 struct soc_camera_device *icd = file->private_data;
364 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
365
366
367 if (ici->ops->init_videobuf)
368 return -EINVAL;
369 else
370 return vb2_create_bufs(&icd->vb2_vidq, create);
371}
372
373static int soc_camera_prepare_buf(struct file *file, void *priv,
374 struct v4l2_buffer *b)
375{
376 struct soc_camera_device *icd = file->private_data;
377 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
378
379
380 if (ici->ops->init_videobuf)
381 return -EINVAL;
382 else
383 return vb2_prepare_buf(&icd->vb2_vidq, b);
384}
385
386
387static int soc_camera_init_user_formats(struct soc_camera_device *icd)
388{
389 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
390 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
391 unsigned int i, fmts = 0, raw_fmts = 0;
392 int ret;
393 enum v4l2_mbus_pixelcode code;
394
395 while (!v4l2_subdev_call(sd, video, enum_mbus_fmt, raw_fmts, &code))
396 raw_fmts++;
397
398 if (!ici->ops->get_formats)
399
400
401
402
403 fmts = raw_fmts;
404 else
405
406
407
408
409 for (i = 0; i < raw_fmts; i++) {
410 ret = ici->ops->get_formats(icd, i, NULL);
411 if (ret < 0)
412 return ret;
413 fmts += ret;
414 }
415
416 if (!fmts)
417 return -ENXIO;
418
419 icd->user_formats =
420 vmalloc(fmts * sizeof(struct soc_camera_format_xlate));
421 if (!icd->user_formats)
422 return -ENOMEM;
423
424 dev_dbg(icd->pdev, "Found %d supported formats.\n", fmts);
425
426
427 fmts = 0;
428 for (i = 0; i < raw_fmts; i++)
429 if (!ici->ops->get_formats) {
430 v4l2_subdev_call(sd, video, enum_mbus_fmt, i, &code);
431 icd->user_formats[fmts].host_fmt =
432 soc_mbus_get_fmtdesc(code);
433 if (icd->user_formats[fmts].host_fmt)
434 icd->user_formats[fmts++].code = code;
435 } else {
436 ret = ici->ops->get_formats(icd, i,
437 &icd->user_formats[fmts]);
438 if (ret < 0)
439 goto egfmt;
440 fmts += ret;
441 }
442
443 icd->num_user_formats = fmts;
444 icd->current_fmt = &icd->user_formats[0];
445
446 return 0;
447
448egfmt:
449 vfree(icd->user_formats);
450 return ret;
451}
452
453
454static void soc_camera_free_user_formats(struct soc_camera_device *icd)
455{
456 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
457
458 if (ici->ops->put_formats)
459 ici->ops->put_formats(icd);
460 icd->current_fmt = NULL;
461 icd->num_user_formats = 0;
462 vfree(icd->user_formats);
463 icd->user_formats = NULL;
464}
465
466
467static int soc_camera_set_fmt(struct soc_camera_device *icd,
468 struct v4l2_format *f)
469{
470 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
471 struct v4l2_pix_format *pix = &f->fmt.pix;
472 int ret;
473
474 dev_dbg(icd->pdev, "S_FMT(%c%c%c%c, %ux%u)\n",
475 pixfmtstr(pix->pixelformat), pix->width, pix->height);
476
477
478 ret = soc_camera_try_fmt(icd, f);
479 if (ret < 0)
480 return ret;
481
482 ret = ici->ops->set_fmt(icd, f);
483 if (ret < 0) {
484 return ret;
485 } else if (!icd->current_fmt ||
486 icd->current_fmt->host_fmt->fourcc != pix->pixelformat) {
487 dev_err(icd->pdev,
488 "Host driver hasn't set up current format correctly!\n");
489 return -EINVAL;
490 }
491
492 icd->user_width = pix->width;
493 icd->user_height = pix->height;
494 icd->bytesperline = pix->bytesperline;
495 icd->sizeimage = pix->sizeimage;
496 icd->colorspace = pix->colorspace;
497 icd->field = pix->field;
498 if (ici->ops->init_videobuf)
499 icd->vb_vidq.field = pix->field;
500
501 dev_dbg(icd->pdev, "set width: %d height: %d\n",
502 icd->user_width, icd->user_height);
503
504
505 return ici->ops->set_bus_param(icd);
506}
507
508static int soc_camera_open(struct file *file)
509{
510 struct video_device *vdev = video_devdata(file);
511 struct soc_camera_device *icd;
512 struct soc_camera_host *ici;
513 int ret;
514
515
516
517
518
519
520 if (mutex_lock_interruptible(&list_lock))
521 return -ERESTARTSYS;
522
523 if (!vdev || !video_is_registered(vdev)) {
524 mutex_unlock(&list_lock);
525 return -ENODEV;
526 }
527
528 icd = dev_get_drvdata(vdev->parent);
529 ici = to_soc_camera_host(icd->parent);
530
531 ret = try_module_get(ici->ops->owner) ? 0 : -ENODEV;
532 mutex_unlock(&list_lock);
533
534 if (ret < 0) {
535 dev_err(icd->pdev, "Couldn't lock capture bus driver.\n");
536 return ret;
537 }
538
539 if (!to_soc_camera_control(icd)) {
540
541 ret = -ENODEV;
542 goto econtrol;
543 }
544
545 if (mutex_lock_interruptible(&ici->host_lock)) {
546 ret = -ERESTARTSYS;
547 goto elockhost;
548 }
549 icd->use_count++;
550
551
552 if (icd->use_count == 1) {
553 struct soc_camera_desc *sdesc = to_soc_camera_desc(icd);
554
555 struct v4l2_format f = {
556 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
557 .fmt.pix = {
558 .width = icd->user_width,
559 .height = icd->user_height,
560 .field = icd->field,
561 .colorspace = icd->colorspace,
562 .pixelformat =
563 icd->current_fmt->host_fmt->fourcc,
564 },
565 };
566
567
568 if (sdesc->subdev_desc.reset)
569 sdesc->subdev_desc.reset(icd->pdev);
570
571 ret = ici->ops->add(icd);
572 if (ret < 0) {
573 dev_err(icd->pdev, "Couldn't activate the camera: %d\n", ret);
574 goto eiciadd;
575 }
576
577 ret = __soc_camera_power_on(icd);
578 if (ret < 0)
579 goto epower;
580
581 pm_runtime_enable(&icd->vdev->dev);
582 ret = pm_runtime_resume(&icd->vdev->dev);
583 if (ret < 0 && ret != -ENOSYS)
584 goto eresume;
585
586
587
588
589
590
591
592 ret = soc_camera_set_fmt(icd, &f);
593 if (ret < 0)
594 goto esfmt;
595
596 if (ici->ops->init_videobuf) {
597 ici->ops->init_videobuf(&icd->vb_vidq, icd);
598 } else {
599 ret = ici->ops->init_videobuf2(&icd->vb2_vidq, icd);
600 if (ret < 0)
601 goto einitvb;
602 }
603 v4l2_ctrl_handler_setup(&icd->ctrl_handler);
604 }
605 mutex_unlock(&ici->host_lock);
606
607 file->private_data = icd;
608 dev_dbg(icd->pdev, "camera device open\n");
609
610 return 0;
611
612
613
614
615
616einitvb:
617esfmt:
618 pm_runtime_disable(&icd->vdev->dev);
619eresume:
620 __soc_camera_power_off(icd);
621epower:
622 ici->ops->remove(icd);
623eiciadd:
624 icd->use_count--;
625 mutex_unlock(&ici->host_lock);
626elockhost:
627econtrol:
628 module_put(ici->ops->owner);
629
630 return ret;
631}
632
633static int soc_camera_close(struct file *file)
634{
635 struct soc_camera_device *icd = file->private_data;
636 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
637
638 mutex_lock(&ici->host_lock);
639 icd->use_count--;
640 if (!icd->use_count) {
641 pm_runtime_suspend(&icd->vdev->dev);
642 pm_runtime_disable(&icd->vdev->dev);
643
644 if (ici->ops->init_videobuf2)
645 vb2_queue_release(&icd->vb2_vidq);
646 __soc_camera_power_off(icd);
647
648 ici->ops->remove(icd);
649 }
650
651 if (icd->streamer == file)
652 icd->streamer = NULL;
653 mutex_unlock(&ici->host_lock);
654
655 module_put(ici->ops->owner);
656
657 dev_dbg(icd->pdev, "camera device close\n");
658
659 return 0;
660}
661
662static ssize_t soc_camera_read(struct file *file, char __user *buf,
663 size_t count, loff_t *ppos)
664{
665 struct soc_camera_device *icd = file->private_data;
666 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
667
668 dev_dbg(icd->pdev, "read called, buf %p\n", buf);
669
670 if (ici->ops->init_videobuf2 && icd->vb2_vidq.io_modes & VB2_READ)
671 return vb2_read(&icd->vb2_vidq, buf, count, ppos,
672 file->f_flags & O_NONBLOCK);
673
674 dev_err(icd->pdev, "camera device read not implemented\n");
675
676 return -EINVAL;
677}
678
679static int soc_camera_mmap(struct file *file, struct vm_area_struct *vma)
680{
681 struct soc_camera_device *icd = file->private_data;
682 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
683 int err;
684
685 dev_dbg(icd->pdev, "mmap called, vma=0x%08lx\n", (unsigned long)vma);
686
687 if (icd->streamer != file)
688 return -EBUSY;
689
690 if (mutex_lock_interruptible(&ici->host_lock))
691 return -ERESTARTSYS;
692 if (ici->ops->init_videobuf)
693 err = videobuf_mmap_mapper(&icd->vb_vidq, vma);
694 else
695 err = vb2_mmap(&icd->vb2_vidq, vma);
696 mutex_unlock(&ici->host_lock);
697
698 dev_dbg(icd->pdev, "vma start=0x%08lx, size=%ld, ret=%d\n",
699 (unsigned long)vma->vm_start,
700 (unsigned long)vma->vm_end - (unsigned long)vma->vm_start,
701 err);
702
703 return err;
704}
705
706static unsigned int soc_camera_poll(struct file *file, poll_table *pt)
707{
708 struct soc_camera_device *icd = file->private_data;
709 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
710 unsigned res = POLLERR;
711
712 if (icd->streamer != file)
713 return POLLERR;
714
715 mutex_lock(&ici->host_lock);
716 if (ici->ops->init_videobuf && list_empty(&icd->vb_vidq.stream))
717 dev_err(icd->pdev, "Trying to poll with no queued buffers!\n");
718 else
719 res = ici->ops->poll(file, pt);
720 mutex_unlock(&ici->host_lock);
721 return res;
722}
723
724void soc_camera_lock(struct vb2_queue *vq)
725{
726 struct soc_camera_device *icd = vb2_get_drv_priv(vq);
727 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
728 mutex_lock(&ici->host_lock);
729}
730EXPORT_SYMBOL(soc_camera_lock);
731
732void soc_camera_unlock(struct vb2_queue *vq)
733{
734 struct soc_camera_device *icd = vb2_get_drv_priv(vq);
735 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
736 mutex_unlock(&ici->host_lock);
737}
738EXPORT_SYMBOL(soc_camera_unlock);
739
740static struct v4l2_file_operations soc_camera_fops = {
741 .owner = THIS_MODULE,
742 .open = soc_camera_open,
743 .release = soc_camera_close,
744 .unlocked_ioctl = video_ioctl2,
745 .read = soc_camera_read,
746 .mmap = soc_camera_mmap,
747 .poll = soc_camera_poll,
748};
749
750static int soc_camera_s_fmt_vid_cap(struct file *file, void *priv,
751 struct v4l2_format *f)
752{
753 struct soc_camera_device *icd = file->private_data;
754 int ret;
755
756 WARN_ON(priv != file->private_data);
757
758 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
759 dev_warn(icd->pdev, "Wrong buf-type %d\n", f->type);
760 return -EINVAL;
761 }
762
763 if (icd->streamer && icd->streamer != file)
764 return -EBUSY;
765
766 if (is_streaming(to_soc_camera_host(icd->parent), icd)) {
767 dev_err(icd->pdev, "S_FMT denied: queue initialised\n");
768 return -EBUSY;
769 }
770
771 ret = soc_camera_set_fmt(icd, f);
772
773 if (!ret && !icd->streamer)
774 icd->streamer = file;
775
776 return ret;
777}
778
779static int soc_camera_enum_fmt_vid_cap(struct file *file, void *priv,
780 struct v4l2_fmtdesc *f)
781{
782 struct soc_camera_device *icd = file->private_data;
783 const struct soc_mbus_pixelfmt *format;
784
785 WARN_ON(priv != file->private_data);
786
787 if (f->index >= icd->num_user_formats)
788 return -EINVAL;
789
790 format = icd->user_formats[f->index].host_fmt;
791
792 if (format->name)
793 strlcpy(f->description, format->name, sizeof(f->description));
794 f->pixelformat = format->fourcc;
795 return 0;
796}
797
798static int soc_camera_g_fmt_vid_cap(struct file *file, void *priv,
799 struct v4l2_format *f)
800{
801 struct soc_camera_device *icd = file->private_data;
802 struct v4l2_pix_format *pix = &f->fmt.pix;
803
804 WARN_ON(priv != file->private_data);
805
806 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
807 return -EINVAL;
808
809 pix->width = icd->user_width;
810 pix->height = icd->user_height;
811 pix->bytesperline = icd->bytesperline;
812 pix->sizeimage = icd->sizeimage;
813 pix->field = icd->field;
814 pix->pixelformat = icd->current_fmt->host_fmt->fourcc;
815 pix->colorspace = icd->colorspace;
816 dev_dbg(icd->pdev, "current_fmt->fourcc: 0x%08x\n",
817 icd->current_fmt->host_fmt->fourcc);
818 return 0;
819}
820
821static int soc_camera_querycap(struct file *file, void *priv,
822 struct v4l2_capability *cap)
823{
824 struct soc_camera_device *icd = file->private_data;
825 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
826
827 WARN_ON(priv != file->private_data);
828
829 strlcpy(cap->driver, ici->drv_name, sizeof(cap->driver));
830 return ici->ops->querycap(ici, cap);
831}
832
833static int soc_camera_streamon(struct file *file, void *priv,
834 enum v4l2_buf_type i)
835{
836 struct soc_camera_device *icd = file->private_data;
837 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
838 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
839 int ret;
840
841 WARN_ON(priv != file->private_data);
842
843 if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
844 return -EINVAL;
845
846 if (icd->streamer != file)
847 return -EBUSY;
848
849
850 if (ici->ops->init_videobuf)
851 ret = videobuf_streamon(&icd->vb_vidq);
852 else
853 ret = vb2_streamon(&icd->vb2_vidq, i);
854
855 if (!ret)
856 v4l2_subdev_call(sd, video, s_stream, 1);
857
858 return ret;
859}
860
861static int soc_camera_streamoff(struct file *file, void *priv,
862 enum v4l2_buf_type i)
863{
864 struct soc_camera_device *icd = file->private_data;
865 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
866 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
867
868 WARN_ON(priv != file->private_data);
869
870 if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
871 return -EINVAL;
872
873 if (icd->streamer != file)
874 return -EBUSY;
875
876
877
878
879
880 if (ici->ops->init_videobuf)
881 videobuf_streamoff(&icd->vb_vidq);
882 else
883 vb2_streamoff(&icd->vb2_vidq, i);
884
885 v4l2_subdev_call(sd, video, s_stream, 0);
886
887 return 0;
888}
889
890static int soc_camera_cropcap(struct file *file, void *fh,
891 struct v4l2_cropcap *a)
892{
893 struct soc_camera_device *icd = file->private_data;
894 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
895
896 return ici->ops->cropcap(icd, a);
897}
898
899static int soc_camera_g_crop(struct file *file, void *fh,
900 struct v4l2_crop *a)
901{
902 struct soc_camera_device *icd = file->private_data;
903 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
904 int ret;
905
906 ret = ici->ops->get_crop(icd, a);
907
908 return ret;
909}
910
911
912
913
914
915
916static int soc_camera_s_crop(struct file *file, void *fh,
917 const struct v4l2_crop *a)
918{
919 struct soc_camera_device *icd = file->private_data;
920 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
921 const struct v4l2_rect *rect = &a->c;
922 struct v4l2_crop current_crop;
923 int ret;
924
925 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
926 return -EINVAL;
927
928 dev_dbg(icd->pdev, "S_CROP(%ux%u@%u:%u)\n",
929 rect->width, rect->height, rect->left, rect->top);
930
931 current_crop.type = a->type;
932
933
934 ret = ici->ops->get_crop(icd, ¤t_crop);
935
936
937 if (ret < 0) {
938 dev_err(icd->pdev,
939 "S_CROP denied: getting current crop failed\n");
940 } else if ((a->c.width == current_crop.c.width &&
941 a->c.height == current_crop.c.height) ||
942 !is_streaming(ici, icd)) {
943
944 ret = ici->ops->set_crop(icd, a);
945 } else if (ici->ops->set_livecrop) {
946 ret = ici->ops->set_livecrop(icd, a);
947 } else {
948 dev_err(icd->pdev,
949 "S_CROP denied: queue initialised and sizes differ\n");
950 ret = -EBUSY;
951 }
952
953 return ret;
954}
955
956static int soc_camera_g_selection(struct file *file, void *fh,
957 struct v4l2_selection *s)
958{
959 struct soc_camera_device *icd = file->private_data;
960 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
961
962
963 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
964 return -EINVAL;
965
966 if (!ici->ops->get_selection)
967 return -ENOTTY;
968
969 return ici->ops->get_selection(icd, s);
970}
971
972static int soc_camera_s_selection(struct file *file, void *fh,
973 struct v4l2_selection *s)
974{
975 struct soc_camera_device *icd = file->private_data;
976 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
977 int ret;
978
979
980 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
981 (s->target != V4L2_SEL_TGT_COMPOSE &&
982 s->target != V4L2_SEL_TGT_CROP))
983 return -EINVAL;
984
985 if (s->target == V4L2_SEL_TGT_COMPOSE) {
986
987 if (is_streaming(ici, icd) &&
988 (icd->user_width != s->r.width ||
989 icd->user_height != s->r.height))
990 return -EBUSY;
991
992
993
994
995
996 if (icd->streamer && icd->streamer != file)
997 return -EBUSY;
998 }
999
1000 if (!ici->ops->set_selection)
1001 return -ENOTTY;
1002
1003 ret = ici->ops->set_selection(icd, s);
1004 if (!ret &&
1005 s->target == V4L2_SEL_TGT_COMPOSE) {
1006 icd->user_width = s->r.width;
1007 icd->user_height = s->r.height;
1008 if (!icd->streamer)
1009 icd->streamer = file;
1010 }
1011
1012 return ret;
1013}
1014
1015static int soc_camera_g_parm(struct file *file, void *fh,
1016 struct v4l2_streamparm *a)
1017{
1018 struct soc_camera_device *icd = file->private_data;
1019 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
1020
1021 if (ici->ops->get_parm)
1022 return ici->ops->get_parm(icd, a);
1023
1024 return -ENOIOCTLCMD;
1025}
1026
1027static int soc_camera_s_parm(struct file *file, void *fh,
1028 struct v4l2_streamparm *a)
1029{
1030 struct soc_camera_device *icd = file->private_data;
1031 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
1032
1033 if (ici->ops->set_parm)
1034 return ici->ops->set_parm(icd, a);
1035
1036 return -ENOIOCTLCMD;
1037}
1038
1039static int soc_camera_g_chip_ident(struct file *file, void *fh,
1040 struct v4l2_dbg_chip_ident *id)
1041{
1042 struct soc_camera_device *icd = file->private_data;
1043 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1044
1045 return v4l2_subdev_call(sd, core, g_chip_ident, id);
1046}
1047
1048#ifdef CONFIG_VIDEO_ADV_DEBUG
1049static int soc_camera_g_register(struct file *file, void *fh,
1050 struct v4l2_dbg_register *reg)
1051{
1052 struct soc_camera_device *icd = file->private_data;
1053 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1054
1055 return v4l2_subdev_call(sd, core, g_register, reg);
1056}
1057
1058static int soc_camera_s_register(struct file *file, void *fh,
1059 const struct v4l2_dbg_register *reg)
1060{
1061 struct soc_camera_device *icd = file->private_data;
1062 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1063
1064 return v4l2_subdev_call(sd, core, s_register, reg);
1065}
1066#endif
1067
1068static int soc_camera_probe(struct soc_camera_device *icd);
1069
1070
1071static void scan_add_host(struct soc_camera_host *ici)
1072{
1073 struct soc_camera_device *icd;
1074
1075 mutex_lock(&list_lock);
1076
1077 list_for_each_entry(icd, &devices, list) {
1078 if (icd->iface == ici->nr) {
1079 icd->parent = ici->v4l2_dev.dev;
1080 soc_camera_probe(icd);
1081 }
1082 }
1083
1084 mutex_unlock(&list_lock);
1085}
1086
1087#ifdef CONFIG_I2C_BOARDINFO
1088static int soc_camera_init_i2c(struct soc_camera_device *icd,
1089 struct soc_camera_desc *sdesc)
1090{
1091 struct i2c_client *client;
1092 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
1093 struct soc_camera_host_desc *shd = &sdesc->host_desc;
1094 struct i2c_adapter *adap = i2c_get_adapter(shd->i2c_adapter_id);
1095 struct v4l2_subdev *subdev;
1096
1097 if (!adap) {
1098 dev_err(icd->pdev, "Cannot get I2C adapter #%d. No driver?\n",
1099 shd->i2c_adapter_id);
1100 goto ei2cga;
1101 }
1102
1103 shd->board_info->platform_data = &sdesc->subdev_desc;
1104
1105 subdev = v4l2_i2c_new_subdev_board(&ici->v4l2_dev, adap,
1106 shd->board_info, NULL);
1107 if (!subdev)
1108 goto ei2cnd;
1109
1110 client = v4l2_get_subdevdata(subdev);
1111
1112
1113 icd->control = &client->dev;
1114
1115 return 0;
1116ei2cnd:
1117 i2c_put_adapter(adap);
1118ei2cga:
1119 return -ENODEV;
1120}
1121
1122static void soc_camera_free_i2c(struct soc_camera_device *icd)
1123{
1124 struct i2c_client *client =
1125 to_i2c_client(to_soc_camera_control(icd));
1126 struct i2c_adapter *adap = client->adapter;
1127
1128 icd->control = NULL;
1129 v4l2_device_unregister_subdev(i2c_get_clientdata(client));
1130 i2c_unregister_device(client);
1131 i2c_put_adapter(adap);
1132}
1133#else
1134#define soc_camera_init_i2c(icd, sdesc) (-ENODEV)
1135#define soc_camera_free_i2c(icd) do {} while (0)
1136#endif
1137
1138static int soc_camera_video_start(struct soc_camera_device *icd);
1139static int video_dev_create(struct soc_camera_device *icd);
1140
1141static int soc_camera_probe(struct soc_camera_device *icd)
1142{
1143 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
1144 struct soc_camera_desc *sdesc = to_soc_camera_desc(icd);
1145 struct soc_camera_host_desc *shd = &sdesc->host_desc;
1146 struct soc_camera_subdev_desc *ssdd = &sdesc->subdev_desc;
1147 struct device *control = NULL;
1148 struct v4l2_subdev *sd;
1149 struct v4l2_mbus_framefmt mf;
1150 int ret;
1151
1152 dev_info(icd->pdev, "Probing %s\n", dev_name(icd->pdev));
1153
1154
1155
1156
1157
1158
1159
1160
1161 ret = v4l2_ctrl_handler_init(&icd->ctrl_handler, 16);
1162 if (ret < 0)
1163 return ret;
1164
1165
1166 if (ssdd->reset)
1167 ssdd->reset(icd->pdev);
1168
1169 mutex_lock(&ici->host_lock);
1170 ret = ici->ops->add(icd);
1171 mutex_unlock(&ici->host_lock);
1172 if (ret < 0)
1173 goto eadd;
1174
1175
1176 ret = video_dev_create(icd);
1177 if (ret < 0)
1178 goto evdc;
1179
1180
1181 if (shd->board_info) {
1182 ret = soc_camera_init_i2c(icd, sdesc);
1183 if (ret < 0)
1184 goto eadddev;
1185 } else if (!shd->add_device || !shd->del_device) {
1186 ret = -EINVAL;
1187 goto eadddev;
1188 } else {
1189 if (shd->module_name)
1190 ret = request_module(shd->module_name);
1191
1192 ret = shd->add_device(icd);
1193 if (ret < 0)
1194 goto eadddev;
1195
1196
1197
1198
1199
1200 control = to_soc_camera_control(icd);
1201 if (!control || !control->driver || !dev_get_drvdata(control) ||
1202 !try_module_get(control->driver->owner)) {
1203 shd->del_device(icd);
1204 ret = -ENODEV;
1205 goto enodrv;
1206 }
1207 }
1208
1209 sd = soc_camera_to_subdev(icd);
1210 sd->grp_id = soc_camera_grp_id(icd);
1211 v4l2_set_subdev_hostdata(sd, icd);
1212
1213 ret = v4l2_ctrl_add_handler(&icd->ctrl_handler, sd->ctrl_handler, NULL);
1214 if (ret < 0)
1215 goto ectrl;
1216
1217
1218 ret = soc_camera_init_user_formats(icd);
1219 if (ret < 0)
1220 goto eiufmt;
1221
1222 icd->field = V4L2_FIELD_ANY;
1223
1224
1225
1226
1227
1228
1229 mutex_lock(&ici->host_lock);
1230
1231 ret = soc_camera_video_start(icd);
1232 if (ret < 0)
1233 goto evidstart;
1234
1235
1236 if (!v4l2_subdev_call(sd, video, g_mbus_fmt, &mf)) {
1237 icd->user_width = mf.width;
1238 icd->user_height = mf.height;
1239 icd->colorspace = mf.colorspace;
1240 icd->field = mf.field;
1241 }
1242
1243 ici->ops->remove(icd);
1244
1245 mutex_unlock(&ici->host_lock);
1246
1247 return 0;
1248
1249evidstart:
1250 mutex_unlock(&ici->host_lock);
1251 soc_camera_free_user_formats(icd);
1252eiufmt:
1253ectrl:
1254 if (shd->board_info) {
1255 soc_camera_free_i2c(icd);
1256 } else {
1257 shd->del_device(icd);
1258 module_put(control->driver->owner);
1259 }
1260enodrv:
1261eadddev:
1262 video_device_release(icd->vdev);
1263 icd->vdev = NULL;
1264evdc:
1265 mutex_lock(&ici->host_lock);
1266 ici->ops->remove(icd);
1267 mutex_unlock(&ici->host_lock);
1268eadd:
1269 v4l2_ctrl_handler_free(&icd->ctrl_handler);
1270 return ret;
1271}
1272
1273
1274
1275
1276
1277static int soc_camera_remove(struct soc_camera_device *icd)
1278{
1279 struct soc_camera_desc *sdesc = to_soc_camera_desc(icd);
1280 struct video_device *vdev = icd->vdev;
1281
1282 BUG_ON(!icd->parent);
1283
1284 v4l2_ctrl_handler_free(&icd->ctrl_handler);
1285 if (vdev) {
1286 video_unregister_device(vdev);
1287 icd->vdev = NULL;
1288 }
1289
1290 if (sdesc->host_desc.board_info) {
1291 soc_camera_free_i2c(icd);
1292 } else {
1293 struct device_driver *drv = to_soc_camera_control(icd)->driver;
1294 if (drv) {
1295 sdesc->host_desc.del_device(icd);
1296 module_put(drv->owner);
1297 }
1298 }
1299 soc_camera_free_user_formats(icd);
1300
1301 return 0;
1302}
1303
1304static int default_cropcap(struct soc_camera_device *icd,
1305 struct v4l2_cropcap *a)
1306{
1307 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1308 return v4l2_subdev_call(sd, video, cropcap, a);
1309}
1310
1311static int default_g_crop(struct soc_camera_device *icd, struct v4l2_crop *a)
1312{
1313 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1314 return v4l2_subdev_call(sd, video, g_crop, a);
1315}
1316
1317static int default_s_crop(struct soc_camera_device *icd, const struct v4l2_crop *a)
1318{
1319 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1320 return v4l2_subdev_call(sd, video, s_crop, a);
1321}
1322
1323static int default_g_parm(struct soc_camera_device *icd,
1324 struct v4l2_streamparm *parm)
1325{
1326 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1327 return v4l2_subdev_call(sd, video, g_parm, parm);
1328}
1329
1330static int default_s_parm(struct soc_camera_device *icd,
1331 struct v4l2_streamparm *parm)
1332{
1333 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1334 return v4l2_subdev_call(sd, video, s_parm, parm);
1335}
1336
1337static int default_enum_framesizes(struct soc_camera_device *icd,
1338 struct v4l2_frmsizeenum *fsize)
1339{
1340 int ret;
1341 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1342 const struct soc_camera_format_xlate *xlate;
1343 __u32 pixfmt = fsize->pixel_format;
1344 struct v4l2_frmsizeenum fsize_mbus = *fsize;
1345
1346 xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
1347 if (!xlate)
1348 return -EINVAL;
1349
1350 fsize_mbus.pixel_format = xlate->code;
1351
1352 ret = v4l2_subdev_call(sd, video, enum_framesizes, &fsize_mbus);
1353 if (ret < 0)
1354 return ret;
1355
1356 *fsize = fsize_mbus;
1357 fsize->pixel_format = pixfmt;
1358
1359 return 0;
1360}
1361
1362int soc_camera_host_register(struct soc_camera_host *ici)
1363{
1364 struct soc_camera_host *ix;
1365 int ret;
1366
1367 if (!ici || !ici->ops ||
1368 !ici->ops->try_fmt ||
1369 !ici->ops->set_fmt ||
1370 !ici->ops->set_bus_param ||
1371 !ici->ops->querycap ||
1372 ((!ici->ops->init_videobuf ||
1373 !ici->ops->reqbufs) &&
1374 !ici->ops->init_videobuf2) ||
1375 !ici->ops->add ||
1376 !ici->ops->remove ||
1377 !ici->ops->poll ||
1378 !ici->v4l2_dev.dev)
1379 return -EINVAL;
1380
1381 if (!ici->ops->set_crop)
1382 ici->ops->set_crop = default_s_crop;
1383 if (!ici->ops->get_crop)
1384 ici->ops->get_crop = default_g_crop;
1385 if (!ici->ops->cropcap)
1386 ici->ops->cropcap = default_cropcap;
1387 if (!ici->ops->set_parm)
1388 ici->ops->set_parm = default_s_parm;
1389 if (!ici->ops->get_parm)
1390 ici->ops->get_parm = default_g_parm;
1391 if (!ici->ops->enum_framesizes)
1392 ici->ops->enum_framesizes = default_enum_framesizes;
1393
1394 mutex_lock(&list_lock);
1395 list_for_each_entry(ix, &hosts, list) {
1396 if (ix->nr == ici->nr) {
1397 ret = -EBUSY;
1398 goto edevreg;
1399 }
1400 }
1401
1402 ret = v4l2_device_register(ici->v4l2_dev.dev, &ici->v4l2_dev);
1403 if (ret < 0)
1404 goto edevreg;
1405
1406 list_add_tail(&ici->list, &hosts);
1407 mutex_unlock(&list_lock);
1408
1409 mutex_init(&ici->host_lock);
1410 scan_add_host(ici);
1411
1412 return 0;
1413
1414edevreg:
1415 mutex_unlock(&list_lock);
1416 return ret;
1417}
1418EXPORT_SYMBOL(soc_camera_host_register);
1419
1420
1421void soc_camera_host_unregister(struct soc_camera_host *ici)
1422{
1423 struct soc_camera_device *icd;
1424
1425 mutex_lock(&list_lock);
1426
1427 list_del(&ici->list);
1428 list_for_each_entry(icd, &devices, list)
1429 if (icd->iface == ici->nr && to_soc_camera_control(icd))
1430 soc_camera_remove(icd);
1431
1432 mutex_unlock(&list_lock);
1433
1434 v4l2_device_unregister(&ici->v4l2_dev);
1435}
1436EXPORT_SYMBOL(soc_camera_host_unregister);
1437
1438
1439static int soc_camera_device_register(struct soc_camera_device *icd)
1440{
1441 struct soc_camera_device *ix;
1442 int num = -1, i;
1443
1444 for (i = 0; i < 256 && num < 0; i++) {
1445 num = i;
1446
1447 list_for_each_entry(ix, &devices, list) {
1448 if (ix->iface == icd->iface && ix->devnum == i) {
1449 num = -1;
1450 break;
1451 }
1452 }
1453 }
1454
1455 if (num < 0)
1456
1457
1458
1459
1460 return -ENOMEM;
1461
1462 icd->devnum = num;
1463 icd->use_count = 0;
1464 icd->host_priv = NULL;
1465
1466 list_add_tail(&icd->list, &devices);
1467
1468 return 0;
1469}
1470
1471static const struct v4l2_ioctl_ops soc_camera_ioctl_ops = {
1472 .vidioc_querycap = soc_camera_querycap,
1473 .vidioc_try_fmt_vid_cap = soc_camera_try_fmt_vid_cap,
1474 .vidioc_g_fmt_vid_cap = soc_camera_g_fmt_vid_cap,
1475 .vidioc_s_fmt_vid_cap = soc_camera_s_fmt_vid_cap,
1476 .vidioc_enum_fmt_vid_cap = soc_camera_enum_fmt_vid_cap,
1477 .vidioc_enum_input = soc_camera_enum_input,
1478 .vidioc_g_input = soc_camera_g_input,
1479 .vidioc_s_input = soc_camera_s_input,
1480 .vidioc_s_std = soc_camera_s_std,
1481 .vidioc_g_std = soc_camera_g_std,
1482 .vidioc_enum_framesizes = soc_camera_enum_framesizes,
1483 .vidioc_reqbufs = soc_camera_reqbufs,
1484 .vidioc_querybuf = soc_camera_querybuf,
1485 .vidioc_qbuf = soc_camera_qbuf,
1486 .vidioc_dqbuf = soc_camera_dqbuf,
1487 .vidioc_create_bufs = soc_camera_create_bufs,
1488 .vidioc_prepare_buf = soc_camera_prepare_buf,
1489 .vidioc_streamon = soc_camera_streamon,
1490 .vidioc_streamoff = soc_camera_streamoff,
1491 .vidioc_cropcap = soc_camera_cropcap,
1492 .vidioc_g_crop = soc_camera_g_crop,
1493 .vidioc_s_crop = soc_camera_s_crop,
1494 .vidioc_g_selection = soc_camera_g_selection,
1495 .vidioc_s_selection = soc_camera_s_selection,
1496 .vidioc_g_parm = soc_camera_g_parm,
1497 .vidioc_s_parm = soc_camera_s_parm,
1498 .vidioc_g_chip_ident = soc_camera_g_chip_ident,
1499#ifdef CONFIG_VIDEO_ADV_DEBUG
1500 .vidioc_g_register = soc_camera_g_register,
1501 .vidioc_s_register = soc_camera_s_register,
1502#endif
1503};
1504
1505static int video_dev_create(struct soc_camera_device *icd)
1506{
1507 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
1508 struct video_device *vdev = video_device_alloc();
1509
1510 if (!vdev)
1511 return -ENOMEM;
1512
1513 strlcpy(vdev->name, ici->drv_name, sizeof(vdev->name));
1514
1515 vdev->parent = icd->pdev;
1516 vdev->current_norm = V4L2_STD_UNKNOWN;
1517 vdev->fops = &soc_camera_fops;
1518 vdev->ioctl_ops = &soc_camera_ioctl_ops;
1519 vdev->release = video_device_release;
1520 vdev->tvnorms = V4L2_STD_UNKNOWN;
1521 vdev->ctrl_handler = &icd->ctrl_handler;
1522 vdev->lock = &ici->host_lock;
1523
1524 icd->vdev = vdev;
1525
1526 return 0;
1527}
1528
1529
1530
1531
1532static int soc_camera_video_start(struct soc_camera_device *icd)
1533{
1534 const struct device_type *type = icd->vdev->dev.type;
1535 int ret;
1536
1537 if (!icd->parent)
1538 return -ENODEV;
1539
1540 ret = video_register_device(icd->vdev, VFL_TYPE_GRABBER, -1);
1541 if (ret < 0) {
1542 dev_err(icd->pdev, "video_register_device failed: %d\n", ret);
1543 return ret;
1544 }
1545
1546
1547 icd->vdev->dev.type = type;
1548
1549 return 0;
1550}
1551
1552static int soc_camera_pdrv_probe(struct platform_device *pdev)
1553{
1554 struct soc_camera_desc *sdesc = pdev->dev.platform_data;
1555 struct soc_camera_subdev_desc *ssdd = &sdesc->subdev_desc;
1556 struct soc_camera_device *icd;
1557 int ret;
1558
1559 if (!sdesc)
1560 return -EINVAL;
1561
1562 icd = devm_kzalloc(&pdev->dev, sizeof(*icd), GFP_KERNEL);
1563 if (!icd)
1564 return -ENOMEM;
1565
1566 ret = devm_regulator_bulk_get(&pdev->dev, ssdd->num_regulators,
1567 ssdd->regulators);
1568 if (ret < 0)
1569 return ret;
1570
1571 icd->iface = sdesc->host_desc.bus_id;
1572 icd->sdesc = sdesc;
1573 icd->pdev = &pdev->dev;
1574 platform_set_drvdata(pdev, icd);
1575
1576 icd->user_width = DEFAULT_WIDTH;
1577 icd->user_height = DEFAULT_HEIGHT;
1578
1579 return soc_camera_device_register(icd);
1580}
1581
1582
1583
1584
1585
1586
1587static int soc_camera_pdrv_remove(struct platform_device *pdev)
1588{
1589 struct soc_camera_device *icd = platform_get_drvdata(pdev);
1590
1591 if (!icd)
1592 return -EINVAL;
1593
1594 list_del(&icd->list);
1595
1596 return 0;
1597}
1598
1599static struct platform_driver __refdata soc_camera_pdrv = {
1600 .probe = soc_camera_pdrv_probe,
1601 .remove = soc_camera_pdrv_remove,
1602 .driver = {
1603 .name = "soc-camera-pdrv",
1604 .owner = THIS_MODULE,
1605 },
1606};
1607
1608module_platform_driver(soc_camera_pdrv);
1609
1610MODULE_DESCRIPTION("Image capture bus driver");
1611MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>");
1612MODULE_LICENSE("GPL");
1613MODULE_ALIAS("platform:soc-camera-pdrv");
1614
