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29#include <linux/init.h>
30#include <linux/list.h>
31#include <linux/module.h>
32#include <linux/kernel.h>
33#include <linux/bitmap.h>
34#include <linux/usb.h>
35#include <linux/i2c.h>
36#include <linux/mm.h>
37#include <linux/mutex.h>
38#include <linux/slab.h>
39
40#include "em28xx.h"
41#include <media/v4l2-common.h>
42#include <media/v4l2-ioctl.h>
43#include <media/v4l2-event.h>
44#include <media/v4l2-chip-ident.h>
45#include <media/msp3400.h>
46#include <media/tuner.h>
47
48#define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
49 "Markus Rechberger <mrechberger@gmail.com>, " \
50 "Mauro Carvalho Chehab <mchehab@infradead.org>, " \
51 "Sascha Sommer <saschasommer@freenet.de>"
52
53#define DRIVER_DESC "Empia em28xx based USB video device driver"
54
55#define EM28XX_VERSION "0.2.0"
56
57#define em28xx_videodbg(fmt, arg...) do {\
58 if (video_debug) \
59 printk(KERN_INFO "%s %s :"fmt, \
60 dev->name, __func__ , ##arg); } while (0)
61
62static unsigned int isoc_debug;
63module_param(isoc_debug, int, 0644);
64MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
65
66#define em28xx_isocdbg(fmt, arg...) \
67do {\
68 if (isoc_debug) { \
69 printk(KERN_INFO "%s %s :"fmt, \
70 dev->name, __func__ , ##arg); \
71 } \
72 } while (0)
73
74MODULE_AUTHOR(DRIVER_AUTHOR);
75MODULE_DESCRIPTION(DRIVER_DESC);
76MODULE_LICENSE("GPL");
77MODULE_VERSION(EM28XX_VERSION);
78
79
80#define EM25XX_FRMDATAHDR_BYTE1 0x02
81#define EM25XX_FRMDATAHDR_BYTE2_STILL_IMAGE 0x20
82#define EM25XX_FRMDATAHDR_BYTE2_FRAME_END 0x02
83#define EM25XX_FRMDATAHDR_BYTE2_FRAME_ID 0x01
84#define EM25XX_FRMDATAHDR_BYTE2_MASK (EM25XX_FRMDATAHDR_BYTE2_STILL_IMAGE | \
85 EM25XX_FRMDATAHDR_BYTE2_FRAME_END | \
86 EM25XX_FRMDATAHDR_BYTE2_FRAME_ID)
87
88
89static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
90static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
91static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
92
93module_param_array(video_nr, int, NULL, 0444);
94module_param_array(vbi_nr, int, NULL, 0444);
95module_param_array(radio_nr, int, NULL, 0444);
96MODULE_PARM_DESC(video_nr, "video device numbers");
97MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
98MODULE_PARM_DESC(radio_nr, "radio device numbers");
99
100static unsigned int video_debug;
101module_param(video_debug, int, 0644);
102MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
103
104
105static struct em28xx_fmt format[] = {
106 {
107 .name = "16 bpp YUY2, 4:2:2, packed",
108 .fourcc = V4L2_PIX_FMT_YUYV,
109 .depth = 16,
110 .reg = EM28XX_OUTFMT_YUV422_Y0UY1V,
111 }, {
112 .name = "16 bpp RGB 565, LE",
113 .fourcc = V4L2_PIX_FMT_RGB565,
114 .depth = 16,
115 .reg = EM28XX_OUTFMT_RGB_16_656,
116 }, {
117 .name = "8 bpp Bayer BGBG..GRGR",
118 .fourcc = V4L2_PIX_FMT_SBGGR8,
119 .depth = 8,
120 .reg = EM28XX_OUTFMT_RGB_8_BGBG,
121 }, {
122 .name = "8 bpp Bayer GRGR..BGBG",
123 .fourcc = V4L2_PIX_FMT_SGRBG8,
124 .depth = 8,
125 .reg = EM28XX_OUTFMT_RGB_8_GRGR,
126 }, {
127 .name = "8 bpp Bayer GBGB..RGRG",
128 .fourcc = V4L2_PIX_FMT_SGBRG8,
129 .depth = 8,
130 .reg = EM28XX_OUTFMT_RGB_8_GBGB,
131 }, {
132 .name = "12 bpp YUV411",
133 .fourcc = V4L2_PIX_FMT_YUV411P,
134 .depth = 12,
135 .reg = EM28XX_OUTFMT_YUV411,
136 },
137};
138
139
140
141
142
143
144
145
146static inline void finish_buffer(struct em28xx *dev,
147 struct em28xx_buffer *buf)
148{
149 em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
150
151 buf->vb.v4l2_buf.sequence = dev->field_count++;
152 buf->vb.v4l2_buf.field = V4L2_FIELD_INTERLACED;
153 v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
154
155 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE);
156}
157
158
159
160
161static void em28xx_copy_video(struct em28xx *dev,
162 struct em28xx_buffer *buf,
163 unsigned char *usb_buf,
164 unsigned long len)
165{
166 void *fieldstart, *startwrite, *startread;
167 int linesdone, currlinedone, offset, lencopy, remain;
168 int bytesperline = dev->width << 1;
169
170 if (buf->pos + len > buf->length)
171 len = buf->length - buf->pos;
172
173 startread = usb_buf;
174 remain = len;
175
176 if (dev->progressive || buf->top_field)
177 fieldstart = buf->vb_buf;
178 else
179 fieldstart = buf->vb_buf + bytesperline;
180
181 linesdone = buf->pos / bytesperline;
182 currlinedone = buf->pos % bytesperline;
183
184 if (dev->progressive)
185 offset = linesdone * bytesperline + currlinedone;
186 else
187 offset = linesdone * bytesperline * 2 + currlinedone;
188
189 startwrite = fieldstart + offset;
190 lencopy = bytesperline - currlinedone;
191 lencopy = lencopy > remain ? remain : lencopy;
192
193 if ((char *)startwrite + lencopy > (char *)buf->vb_buf + buf->length) {
194 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
195 ((char *)startwrite + lencopy) -
196 ((char *)buf->vb_buf + buf->length));
197 remain = (char *)buf->vb_buf + buf->length -
198 (char *)startwrite;
199 lencopy = remain;
200 }
201 if (lencopy <= 0)
202 return;
203 memcpy(startwrite, startread, lencopy);
204
205 remain -= lencopy;
206
207 while (remain > 0) {
208 if (dev->progressive)
209 startwrite += lencopy;
210 else
211 startwrite += lencopy + bytesperline;
212 startread += lencopy;
213 if (bytesperline > remain)
214 lencopy = remain;
215 else
216 lencopy = bytesperline;
217
218 if ((char *)startwrite + lencopy > (char *)buf->vb_buf +
219 buf->length) {
220 em28xx_isocdbg("Overflow of %zi bytes past buffer end"
221 "(2)\n",
222 ((char *)startwrite + lencopy) -
223 ((char *)buf->vb_buf + buf->length));
224 lencopy = remain = (char *)buf->vb_buf + buf->length -
225 (char *)startwrite;
226 }
227 if (lencopy <= 0)
228 break;
229
230 memcpy(startwrite, startread, lencopy);
231
232 remain -= lencopy;
233 }
234
235 buf->pos += len;
236}
237
238
239
240
241static void em28xx_copy_vbi(struct em28xx *dev,
242 struct em28xx_buffer *buf,
243 unsigned char *usb_buf,
244 unsigned long len)
245{
246 unsigned int offset;
247
248 if (buf->pos + len > buf->length)
249 len = buf->length - buf->pos;
250
251 offset = buf->pos;
252
253 if (buf->top_field == 0)
254 offset += dev->vbi_width * dev->vbi_height;
255
256 memcpy(buf->vb_buf + offset, usb_buf, len);
257 buf->pos += len;
258}
259
260static inline void print_err_status(struct em28xx *dev,
261 int packet, int status)
262{
263 char *errmsg = "Unknown";
264
265 switch (status) {
266 case -ENOENT:
267 errmsg = "unlinked synchronuously";
268 break;
269 case -ECONNRESET:
270 errmsg = "unlinked asynchronuously";
271 break;
272 case -ENOSR:
273 errmsg = "Buffer error (overrun)";
274 break;
275 case -EPIPE:
276 errmsg = "Stalled (device not responding)";
277 break;
278 case -EOVERFLOW:
279 errmsg = "Babble (bad cable?)";
280 break;
281 case -EPROTO:
282 errmsg = "Bit-stuff error (bad cable?)";
283 break;
284 case -EILSEQ:
285 errmsg = "CRC/Timeout (could be anything)";
286 break;
287 case -ETIME:
288 errmsg = "Device does not respond";
289 break;
290 }
291 if (packet < 0) {
292 em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
293 } else {
294 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
295 packet, status, errmsg);
296 }
297}
298
299
300
301
302static inline struct em28xx_buffer *get_next_buf(struct em28xx *dev,
303 struct em28xx_dmaqueue *dma_q)
304{
305 struct em28xx_buffer *buf;
306
307 if (list_empty(&dma_q->active)) {
308 em28xx_isocdbg("No active queue to serve\n");
309 return NULL;
310 }
311
312
313 buf = list_entry(dma_q->active.next, struct em28xx_buffer, list);
314
315 list_del(&buf->list);
316 buf->pos = 0;
317 buf->vb_buf = buf->mem;
318
319 return buf;
320}
321
322
323
324
325static struct em28xx_buffer *
326finish_field_prepare_next(struct em28xx *dev,
327 struct em28xx_buffer *buf,
328 struct em28xx_dmaqueue *dma_q)
329{
330 if (dev->progressive || dev->top_field) {
331 if (buf != NULL)
332 finish_buffer(dev, buf);
333 buf = get_next_buf(dev, dma_q);
334 }
335 if (buf != NULL) {
336 buf->top_field = dev->top_field;
337 buf->pos = 0;
338 }
339
340 return buf;
341}
342
343
344
345
346static inline void process_frame_data_em28xx(struct em28xx *dev,
347 unsigned char *data_pkt,
348 unsigned int data_len)
349{
350 struct em28xx_buffer *buf = dev->usb_ctl.vid_buf;
351 struct em28xx_buffer *vbi_buf = dev->usb_ctl.vbi_buf;
352 struct em28xx_dmaqueue *dma_q = &dev->vidq;
353 struct em28xx_dmaqueue *vbi_dma_q = &dev->vbiq;
354
355
356
357
358
359 if (data_len >= 4) {
360
361
362 if (data_pkt[0] == 0x88 && data_pkt[1] == 0x88 &&
363 data_pkt[2] == 0x88 && data_pkt[3] == 0x88) {
364
365 data_pkt += 4;
366 data_len -= 4;
367 } else if (data_pkt[0] == 0x33 && data_pkt[1] == 0x95) {
368
369 dev->capture_type = 0;
370 dev->vbi_read = 0;
371 em28xx_isocdbg("VBI START HEADER !!!\n");
372 dev->top_field = !(data_pkt[2] & 1);
373 data_pkt += 4;
374 data_len -= 4;
375 } else if (data_pkt[0] == 0x22 && data_pkt[1] == 0x5a) {
376
377 dev->capture_type = 2;
378 em28xx_isocdbg("VIDEO START HEADER !!!\n");
379 dev->top_field = !(data_pkt[2] & 1);
380 data_pkt += 4;
381 data_len -= 4;
382 }
383 }
384
385
386
387 if (dev->capture_type == 0) {
388 vbi_buf = finish_field_prepare_next(dev, vbi_buf, vbi_dma_q);
389 dev->usb_ctl.vbi_buf = vbi_buf;
390 dev->capture_type = 1;
391 }
392
393 if (dev->capture_type == 1) {
394 int vbi_size = dev->vbi_width * dev->vbi_height;
395 int vbi_data_len = ((dev->vbi_read + data_len) > vbi_size) ?
396 (vbi_size - dev->vbi_read) : data_len;
397
398
399 if (vbi_buf != NULL)
400 em28xx_copy_vbi(dev, vbi_buf, data_pkt, vbi_data_len);
401 dev->vbi_read += vbi_data_len;
402
403 if (vbi_data_len < data_len) {
404
405 dev->capture_type = 2;
406 data_pkt += vbi_data_len;
407 data_len -= vbi_data_len;
408 }
409 }
410
411 if (dev->capture_type == 2) {
412 buf = finish_field_prepare_next(dev, buf, dma_q);
413 dev->usb_ctl.vid_buf = buf;
414 dev->capture_type = 3;
415 }
416
417 if (dev->capture_type == 3 && buf != NULL && data_len > 0)
418 em28xx_copy_video(dev, buf, data_pkt, data_len);
419}
420
421
422
423
424static inline void process_frame_data_em25xx(struct em28xx *dev,
425 unsigned char *data_pkt,
426 unsigned int data_len)
427{
428 struct em28xx_buffer *buf = dev->usb_ctl.vid_buf;
429 struct em28xx_dmaqueue *dmaq = &dev->vidq;
430 bool frame_end = 0;
431
432
433
434
435 if (data_len >= 2) {
436 if ((data_pkt[0] == EM25XX_FRMDATAHDR_BYTE1) &&
437 ((data_pkt[1] & ~EM25XX_FRMDATAHDR_BYTE2_MASK) == 0x00)) {
438 dev->top_field = !(data_pkt[1] &
439 EM25XX_FRMDATAHDR_BYTE2_FRAME_ID);
440 frame_end = data_pkt[1] &
441 EM25XX_FRMDATAHDR_BYTE2_FRAME_END;
442 data_pkt += 2;
443 data_len -= 2;
444 }
445
446
447 if (dev->analog_xfer_bulk && frame_end) {
448 buf = finish_field_prepare_next(dev, buf, dmaq);
449 dev->usb_ctl.vid_buf = buf;
450 }
451
452
453
454
455 }
456
457
458 if (buf != NULL && data_len > 0)
459 em28xx_copy_video(dev, buf, data_pkt, data_len);
460
461
462 if (!dev->analog_xfer_bulk && frame_end) {
463 buf = finish_field_prepare_next(dev, buf, dmaq);
464 dev->usb_ctl.vid_buf = buf;
465 }
466
467
468
469
470
471
472
473
474
475}
476
477
478static inline int em28xx_urb_data_copy(struct em28xx *dev, struct urb *urb)
479{
480 int xfer_bulk, num_packets, i;
481 unsigned char *usb_data_pkt;
482 unsigned int usb_data_len;
483
484 if (!dev)
485 return 0;
486
487 if (dev->disconnected)
488 return 0;
489
490 if (urb->status < 0)
491 print_err_status(dev, -1, urb->status);
492
493 xfer_bulk = usb_pipebulk(urb->pipe);
494
495 if (xfer_bulk)
496 num_packets = 1;
497 else
498 num_packets = urb->number_of_packets;
499
500 for (i = 0; i < num_packets; i++) {
501 if (xfer_bulk) {
502 usb_data_len = urb->actual_length;
503
504 usb_data_pkt = urb->transfer_buffer;
505 } else {
506 if (urb->iso_frame_desc[i].status < 0) {
507 print_err_status(dev, i,
508 urb->iso_frame_desc[i].status);
509 if (urb->iso_frame_desc[i].status != -EPROTO)
510 continue;
511 }
512
513 usb_data_len = urb->iso_frame_desc[i].actual_length;
514 if (usb_data_len > dev->max_pkt_size) {
515 em28xx_isocdbg("packet bigger than packet size");
516 continue;
517 }
518
519 usb_data_pkt = urb->transfer_buffer +
520 urb->iso_frame_desc[i].offset;
521 }
522
523 if (usb_data_len == 0) {
524
525
526 continue;
527 }
528
529 if (dev->is_em25xx)
530 process_frame_data_em25xx(dev,
531 usb_data_pkt, usb_data_len);
532 else
533 process_frame_data_em28xx(dev,
534 usb_data_pkt, usb_data_len);
535
536 }
537 return 1;
538}
539
540
541static int get_ressource(enum v4l2_buf_type f_type)
542{
543 switch (f_type) {
544 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
545 return EM28XX_RESOURCE_VIDEO;
546 case V4L2_BUF_TYPE_VBI_CAPTURE:
547 return EM28XX_RESOURCE_VBI;
548 default:
549 BUG();
550 return 0;
551 }
552}
553
554
555static int res_get(struct em28xx *dev, enum v4l2_buf_type f_type)
556{
557 int res_type = get_ressource(f_type);
558
559
560 if (dev->resources & res_type) {
561
562 return -EBUSY;
563 }
564
565
566 dev->resources |= res_type;
567 em28xx_videodbg("res: get %d\n", res_type);
568 return 0;
569}
570
571static void res_free(struct em28xx *dev, enum v4l2_buf_type f_type)
572{
573 int res_type = get_ressource(f_type);
574
575 dev->resources &= ~res_type;
576 em28xx_videodbg("res: put %d\n", res_type);
577}
578
579
580
581
582
583static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
584 unsigned int *nbuffers, unsigned int *nplanes,
585 unsigned int sizes[], void *alloc_ctxs[])
586{
587 struct em28xx *dev = vb2_get_drv_priv(vq);
588 unsigned long size;
589
590 if (fmt)
591 size = fmt->fmt.pix.sizeimage;
592 else
593 size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
594
595 if (size == 0)
596 return -EINVAL;
597
598 if (0 == *nbuffers)
599 *nbuffers = 32;
600
601 *nplanes = 1;
602 sizes[0] = size;
603
604 return 0;
605}
606
607static int
608buffer_prepare(struct vb2_buffer *vb)
609{
610 struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
611 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
612 unsigned long size;
613
614 em28xx_videodbg("%s, field=%d\n", __func__, vb->v4l2_buf.field);
615
616 size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
617
618 if (vb2_plane_size(vb, 0) < size) {
619 em28xx_videodbg("%s data will not fit into plane (%lu < %lu)\n",
620 __func__, vb2_plane_size(vb, 0), size);
621 return -EINVAL;
622 }
623 vb2_set_plane_payload(&buf->vb, 0, size);
624
625 return 0;
626}
627
628int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
629{
630 struct em28xx *dev = vb2_get_drv_priv(vq);
631 struct v4l2_frequency f;
632 int rc = 0;
633
634 em28xx_videodbg("%s\n", __func__);
635
636
637
638 rc = res_get(dev, vq->type);
639 if (rc)
640 return rc;
641
642 if (dev->streaming_users++ == 0) {
643
644
645
646 em28xx_set_alternate(dev);
647
648
649
650
651 em28xx_wake_i2c(dev);
652
653 dev->capture_type = -1;
654 rc = em28xx_init_usb_xfer(dev, EM28XX_ANALOG_MODE,
655 dev->analog_xfer_bulk,
656 EM28XX_NUM_BUFS,
657 dev->max_pkt_size,
658 dev->packet_multiplier,
659 em28xx_urb_data_copy);
660 if (rc < 0)
661 goto fail;
662
663
664
665
666
667
668
669
670 memset(&f, 0, sizeof(f));
671 f.frequency = dev->ctl_freq;
672 if (vq->owner && vq->owner->vdev->vfl_type == VFL_TYPE_RADIO)
673 f.type = V4L2_TUNER_RADIO;
674 else
675 f.type = V4L2_TUNER_ANALOG_TV;
676 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
677 }
678
679fail:
680 return rc;
681}
682
683static int em28xx_stop_streaming(struct vb2_queue *vq)
684{
685 struct em28xx *dev = vb2_get_drv_priv(vq);
686 struct em28xx_dmaqueue *vidq = &dev->vidq;
687 unsigned long flags = 0;
688
689 em28xx_videodbg("%s\n", __func__);
690
691 res_free(dev, vq->type);
692
693 if (dev->streaming_users-- == 1) {
694
695 em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
696 }
697
698 spin_lock_irqsave(&dev->slock, flags);
699 while (!list_empty(&vidq->active)) {
700 struct em28xx_buffer *buf;
701 buf = list_entry(vidq->active.next, struct em28xx_buffer, list);
702 list_del(&buf->list);
703 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
704 }
705 dev->usb_ctl.vid_buf = NULL;
706 spin_unlock_irqrestore(&dev->slock, flags);
707
708 return 0;
709}
710
711int em28xx_stop_vbi_streaming(struct vb2_queue *vq)
712{
713 struct em28xx *dev = vb2_get_drv_priv(vq);
714 struct em28xx_dmaqueue *vbiq = &dev->vbiq;
715 unsigned long flags = 0;
716
717 em28xx_videodbg("%s\n", __func__);
718
719 res_free(dev, vq->type);
720
721 if (dev->streaming_users-- == 1) {
722
723 em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
724 }
725
726 spin_lock_irqsave(&dev->slock, flags);
727 while (!list_empty(&vbiq->active)) {
728 struct em28xx_buffer *buf;
729 buf = list_entry(vbiq->active.next, struct em28xx_buffer, list);
730 list_del(&buf->list);
731 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
732 }
733 dev->usb_ctl.vbi_buf = NULL;
734 spin_unlock_irqrestore(&dev->slock, flags);
735
736 return 0;
737}
738
739static void
740buffer_queue(struct vb2_buffer *vb)
741{
742 struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
743 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
744 struct em28xx_dmaqueue *vidq = &dev->vidq;
745 unsigned long flags = 0;
746
747 em28xx_videodbg("%s\n", __func__);
748 buf->mem = vb2_plane_vaddr(vb, 0);
749 buf->length = vb2_plane_size(vb, 0);
750
751 spin_lock_irqsave(&dev->slock, flags);
752 list_add_tail(&buf->list, &vidq->active);
753 spin_unlock_irqrestore(&dev->slock, flags);
754}
755
756static struct vb2_ops em28xx_video_qops = {
757 .queue_setup = queue_setup,
758 .buf_prepare = buffer_prepare,
759 .buf_queue = buffer_queue,
760 .start_streaming = em28xx_start_analog_streaming,
761 .stop_streaming = em28xx_stop_streaming,
762 .wait_prepare = vb2_ops_wait_prepare,
763 .wait_finish = vb2_ops_wait_finish,
764};
765
766int em28xx_vb2_setup(struct em28xx *dev)
767{
768 int rc;
769 struct vb2_queue *q;
770
771
772 q = &dev->vb_vidq;
773 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
774 q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
775 q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
776 q->drv_priv = dev;
777 q->buf_struct_size = sizeof(struct em28xx_buffer);
778 q->ops = &em28xx_video_qops;
779 q->mem_ops = &vb2_vmalloc_memops;
780
781 rc = vb2_queue_init(q);
782 if (rc < 0)
783 return rc;
784
785
786 q = &dev->vb_vbiq;
787 q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
788 q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR;
789 q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
790 q->drv_priv = dev;
791 q->buf_struct_size = sizeof(struct em28xx_buffer);
792 q->ops = &em28xx_vbi_qops;
793 q->mem_ops = &vb2_vmalloc_memops;
794
795 rc = vb2_queue_init(q);
796 if (rc < 0)
797 return rc;
798
799 return 0;
800}
801
802
803
804static void video_mux(struct em28xx *dev, int index)
805{
806 dev->ctl_input = index;
807 dev->ctl_ainput = INPUT(index)->amux;
808 dev->ctl_aoutput = INPUT(index)->aout;
809
810 if (!dev->ctl_aoutput)
811 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
812
813 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
814 INPUT(index)->vmux, 0, 0);
815
816 if (dev->board.has_msp34xx) {
817 if (dev->i2s_speed) {
818 v4l2_device_call_all(&dev->v4l2_dev, 0, audio,
819 s_i2s_clock_freq, dev->i2s_speed);
820 }
821
822 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
823 dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
824 }
825
826 if (dev->board.adecoder != EM28XX_NOADECODER) {
827 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
828 dev->ctl_ainput, dev->ctl_aoutput, 0);
829 }
830
831 em28xx_audio_analog_set(dev);
832}
833
834void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv)
835{
836 struct em28xx *dev = priv;
837
838
839
840
841
842
843
844 switch (ctrl->id) {
845 case V4L2_CID_AUDIO_MUTE:
846 dev->mute = ctrl->val;
847 em28xx_audio_analog_set(dev);
848 break;
849 case V4L2_CID_AUDIO_VOLUME:
850 dev->volume = ctrl->val;
851 em28xx_audio_analog_set(dev);
852 break;
853 }
854}
855
856static int em28xx_s_ctrl(struct v4l2_ctrl *ctrl)
857{
858 struct em28xx *dev = container_of(ctrl->handler, struct em28xx, ctrl_handler);
859 int ret = -EINVAL;
860
861 switch (ctrl->id) {
862 case V4L2_CID_AUDIO_MUTE:
863 dev->mute = ctrl->val;
864 ret = em28xx_audio_analog_set(dev);
865 break;
866 case V4L2_CID_AUDIO_VOLUME:
867 dev->volume = ctrl->val;
868 ret = em28xx_audio_analog_set(dev);
869 break;
870 case V4L2_CID_CONTRAST:
871 ret = em28xx_write_reg(dev, EM28XX_R20_YGAIN, ctrl->val);
872 break;
873 case V4L2_CID_BRIGHTNESS:
874 ret = em28xx_write_reg(dev, EM28XX_R21_YOFFSET, ctrl->val);
875 break;
876 case V4L2_CID_SATURATION:
877 ret = em28xx_write_reg(dev, EM28XX_R22_UVGAIN, ctrl->val);
878 break;
879 case V4L2_CID_BLUE_BALANCE:
880 ret = em28xx_write_reg(dev, EM28XX_R23_UOFFSET, ctrl->val);
881 break;
882 case V4L2_CID_RED_BALANCE:
883 ret = em28xx_write_reg(dev, EM28XX_R24_VOFFSET, ctrl->val);
884 break;
885 case V4L2_CID_SHARPNESS:
886 ret = em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, ctrl->val);
887 break;
888 }
889
890 return (ret < 0) ? ret : 0;
891}
892
893const struct v4l2_ctrl_ops em28xx_ctrl_ops = {
894 .s_ctrl = em28xx_s_ctrl,
895};
896
897static void size_to_scale(struct em28xx *dev,
898 unsigned int width, unsigned int height,
899 unsigned int *hscale, unsigned int *vscale)
900{
901 unsigned int maxw = norm_maxw(dev);
902 unsigned int maxh = norm_maxh(dev);
903
904 *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
905 if (*hscale > EM28XX_HVSCALE_MAX)
906 *hscale = EM28XX_HVSCALE_MAX;
907
908 *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
909 if (*vscale > EM28XX_HVSCALE_MAX)
910 *vscale = EM28XX_HVSCALE_MAX;
911}
912
913static void scale_to_size(struct em28xx *dev,
914 unsigned int hscale, unsigned int vscale,
915 unsigned int *width, unsigned int *height)
916{
917 unsigned int maxw = norm_maxw(dev);
918 unsigned int maxh = norm_maxh(dev);
919
920 *width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
921 *height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
922}
923
924
925
926
927
928static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
929 struct v4l2_format *f)
930{
931 struct em28xx_fh *fh = priv;
932 struct em28xx *dev = fh->dev;
933
934 f->fmt.pix.width = dev->width;
935 f->fmt.pix.height = dev->height;
936 f->fmt.pix.pixelformat = dev->format->fourcc;
937 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
938 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
939 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
940
941
942 if (dev->progressive)
943 f->fmt.pix.field = V4L2_FIELD_NONE;
944 else
945 f->fmt.pix.field = dev->interlaced ?
946 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
947 return 0;
948}
949
950static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
951{
952 unsigned int i;
953
954 for (i = 0; i < ARRAY_SIZE(format); i++)
955 if (format[i].fourcc == fourcc)
956 return &format[i];
957
958 return NULL;
959}
960
961static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
962 struct v4l2_format *f)
963{
964 struct em28xx_fh *fh = priv;
965 struct em28xx *dev = fh->dev;
966 unsigned int width = f->fmt.pix.width;
967 unsigned int height = f->fmt.pix.height;
968 unsigned int maxw = norm_maxw(dev);
969 unsigned int maxh = norm_maxh(dev);
970 unsigned int hscale, vscale;
971 struct em28xx_fmt *fmt;
972
973 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
974 if (!fmt) {
975 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
976 f->fmt.pix.pixelformat);
977 return -EINVAL;
978 }
979
980 if (dev->board.is_em2800) {
981
982 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
983 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
984
985
986
987
988
989 if (width == maxw && height == maxh)
990 width /= 2;
991 } else {
992
993
994 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh,
995 1, 0);
996 }
997
998 size_to_scale(dev, width, height, &hscale, &vscale);
999 scale_to_size(dev, hscale, vscale, &width, &height);
1000
1001 f->fmt.pix.width = width;
1002 f->fmt.pix.height = height;
1003 f->fmt.pix.pixelformat = fmt->fourcc;
1004 f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
1005 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1006 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1007 if (dev->progressive)
1008 f->fmt.pix.field = V4L2_FIELD_NONE;
1009 else
1010 f->fmt.pix.field = dev->interlaced ?
1011 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
1012
1013 return 0;
1014}
1015
1016static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
1017 unsigned width, unsigned height)
1018{
1019 struct em28xx_fmt *fmt;
1020
1021 fmt = format_by_fourcc(fourcc);
1022 if (!fmt)
1023 return -EINVAL;
1024
1025 dev->format = fmt;
1026 dev->width = width;
1027 dev->height = height;
1028
1029
1030 size_to_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1031
1032 em28xx_resolution_set(dev);
1033
1034 return 0;
1035}
1036
1037static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1038 struct v4l2_format *f)
1039{
1040 struct em28xx *dev = video_drvdata(file);
1041
1042 if (dev->streaming_users > 0)
1043 return -EBUSY;
1044
1045 vidioc_try_fmt_vid_cap(file, priv, f);
1046
1047 return em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
1048 f->fmt.pix.width, f->fmt.pix.height);
1049}
1050
1051static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1052{
1053 struct em28xx_fh *fh = priv;
1054 struct em28xx *dev = fh->dev;
1055
1056 *norm = dev->norm;
1057
1058 return 0;
1059}
1060
1061static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm)
1062{
1063 struct em28xx_fh *fh = priv;
1064 struct em28xx *dev = fh->dev;
1065
1066 v4l2_device_call_all(&dev->v4l2_dev, 0, video, querystd, norm);
1067
1068 return 0;
1069}
1070
1071static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1072{
1073 struct em28xx_fh *fh = priv;
1074 struct em28xx *dev = fh->dev;
1075 struct v4l2_format f;
1076
1077 if (norm == dev->norm)
1078 return 0;
1079
1080 if (dev->streaming_users > 0)
1081 return -EBUSY;
1082
1083 dev->norm = norm;
1084
1085
1086 f.fmt.pix.width = 720;
1087 f.fmt.pix.height = (norm & V4L2_STD_525_60) ? 480 : 576;
1088 vidioc_try_fmt_vid_cap(file, priv, &f);
1089
1090
1091 dev->width = f.fmt.pix.width;
1092 dev->height = f.fmt.pix.height;
1093 size_to_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1094
1095 em28xx_resolution_set(dev);
1096 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1097
1098 return 0;
1099}
1100
1101static int vidioc_g_parm(struct file *file, void *priv,
1102 struct v4l2_streamparm *p)
1103{
1104 struct em28xx_fh *fh = priv;
1105 struct em28xx *dev = fh->dev;
1106 int rc = 0;
1107
1108 p->parm.capture.readbuffers = EM28XX_MIN_BUF;
1109 if (dev->board.is_webcam)
1110 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
1111 video, g_parm, p);
1112 else
1113 v4l2_video_std_frame_period(dev->norm,
1114 &p->parm.capture.timeperframe);
1115
1116 return rc;
1117}
1118
1119static int vidioc_s_parm(struct file *file, void *priv,
1120 struct v4l2_streamparm *p)
1121{
1122 struct em28xx_fh *fh = priv;
1123 struct em28xx *dev = fh->dev;
1124
1125 p->parm.capture.readbuffers = EM28XX_MIN_BUF;
1126 return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
1127}
1128
1129static const char *iname[] = {
1130 [EM28XX_VMUX_COMPOSITE1] = "Composite1",
1131 [EM28XX_VMUX_COMPOSITE2] = "Composite2",
1132 [EM28XX_VMUX_COMPOSITE3] = "Composite3",
1133 [EM28XX_VMUX_COMPOSITE4] = "Composite4",
1134 [EM28XX_VMUX_SVIDEO] = "S-Video",
1135 [EM28XX_VMUX_TELEVISION] = "Television",
1136 [EM28XX_VMUX_CABLE] = "Cable TV",
1137 [EM28XX_VMUX_DVB] = "DVB",
1138 [EM28XX_VMUX_DEBUG] = "for debug only",
1139};
1140
1141static int vidioc_enum_input(struct file *file, void *priv,
1142 struct v4l2_input *i)
1143{
1144 struct em28xx_fh *fh = priv;
1145 struct em28xx *dev = fh->dev;
1146 unsigned int n;
1147
1148 n = i->index;
1149 if (n >= MAX_EM28XX_INPUT)
1150 return -EINVAL;
1151 if (0 == INPUT(n)->type)
1152 return -EINVAL;
1153
1154 i->index = n;
1155 i->type = V4L2_INPUT_TYPE_CAMERA;
1156
1157 strcpy(i->name, iname[INPUT(n)->type]);
1158
1159 if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
1160 (EM28XX_VMUX_CABLE == INPUT(n)->type))
1161 i->type = V4L2_INPUT_TYPE_TUNER;
1162
1163 i->std = dev->vdev->tvnorms;
1164
1165 if (dev->board.is_webcam)
1166 i->capabilities = 0;
1167
1168 return 0;
1169}
1170
1171static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1172{
1173 struct em28xx_fh *fh = priv;
1174 struct em28xx *dev = fh->dev;
1175
1176 *i = dev->ctl_input;
1177
1178 return 0;
1179}
1180
1181static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1182{
1183 struct em28xx_fh *fh = priv;
1184 struct em28xx *dev = fh->dev;
1185
1186 if (i >= MAX_EM28XX_INPUT)
1187 return -EINVAL;
1188 if (0 == INPUT(i)->type)
1189 return -EINVAL;
1190
1191 video_mux(dev, i);
1192 return 0;
1193}
1194
1195static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1196{
1197 struct em28xx_fh *fh = priv;
1198 struct em28xx *dev = fh->dev;
1199
1200 switch (a->index) {
1201 case EM28XX_AMUX_VIDEO:
1202 strcpy(a->name, "Television");
1203 break;
1204 case EM28XX_AMUX_LINE_IN:
1205 strcpy(a->name, "Line In");
1206 break;
1207 case EM28XX_AMUX_VIDEO2:
1208 strcpy(a->name, "Television alt");
1209 break;
1210 case EM28XX_AMUX_PHONE:
1211 strcpy(a->name, "Phone");
1212 break;
1213 case EM28XX_AMUX_MIC:
1214 strcpy(a->name, "Mic");
1215 break;
1216 case EM28XX_AMUX_CD:
1217 strcpy(a->name, "CD");
1218 break;
1219 case EM28XX_AMUX_AUX:
1220 strcpy(a->name, "Aux");
1221 break;
1222 case EM28XX_AMUX_PCM_OUT:
1223 strcpy(a->name, "PCM");
1224 break;
1225 default:
1226 return -EINVAL;
1227 }
1228
1229 a->index = dev->ctl_ainput;
1230 a->capability = V4L2_AUDCAP_STEREO;
1231
1232 return 0;
1233}
1234
1235static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
1236{
1237 struct em28xx_fh *fh = priv;
1238 struct em28xx *dev = fh->dev;
1239
1240 if (a->index >= MAX_EM28XX_INPUT)
1241 return -EINVAL;
1242 if (0 == INPUT(a->index)->type)
1243 return -EINVAL;
1244
1245 dev->ctl_ainput = INPUT(a->index)->amux;
1246 dev->ctl_aoutput = INPUT(a->index)->aout;
1247
1248 if (!dev->ctl_aoutput)
1249 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
1250
1251 return 0;
1252}
1253
1254static int vidioc_g_tuner(struct file *file, void *priv,
1255 struct v4l2_tuner *t)
1256{
1257 struct em28xx_fh *fh = priv;
1258 struct em28xx *dev = fh->dev;
1259
1260 if (0 != t->index)
1261 return -EINVAL;
1262
1263 strcpy(t->name, "Tuner");
1264
1265 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1266 return 0;
1267}
1268
1269static int vidioc_s_tuner(struct file *file, void *priv,
1270 const struct v4l2_tuner *t)
1271{
1272 struct em28xx_fh *fh = priv;
1273 struct em28xx *dev = fh->dev;
1274
1275 if (0 != t->index)
1276 return -EINVAL;
1277
1278 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1279 return 0;
1280}
1281
1282static int vidioc_g_frequency(struct file *file, void *priv,
1283 struct v4l2_frequency *f)
1284{
1285 struct em28xx_fh *fh = priv;
1286 struct em28xx *dev = fh->dev;
1287
1288 if (0 != f->tuner)
1289 return -EINVAL;
1290
1291 f->frequency = dev->ctl_freq;
1292 return 0;
1293}
1294
1295static int vidioc_s_frequency(struct file *file, void *priv,
1296 const struct v4l2_frequency *f)
1297{
1298 struct v4l2_frequency new_freq = *f;
1299 struct em28xx_fh *fh = priv;
1300 struct em28xx *dev = fh->dev;
1301
1302 if (0 != f->tuner)
1303 return -EINVAL;
1304
1305 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1306 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq);
1307 dev->ctl_freq = new_freq.frequency;
1308
1309 return 0;
1310}
1311
1312static int vidioc_g_chip_ident(struct file *file, void *priv,
1313 struct v4l2_dbg_chip_ident *chip)
1314{
1315 struct em28xx_fh *fh = priv;
1316 struct em28xx *dev = fh->dev;
1317
1318 chip->ident = V4L2_IDENT_NONE;
1319 chip->revision = 0;
1320 if (chip->match.type == V4L2_CHIP_MATCH_BRIDGE) {
1321 if (chip->match.addr > 1)
1322 return -EINVAL;
1323 return 0;
1324 }
1325 if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER &&
1326 chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
1327 return -EINVAL;
1328
1329 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1330
1331 return 0;
1332}
1333
1334#ifdef CONFIG_VIDEO_ADV_DEBUG
1335static int vidioc_g_chip_info(struct file *file, void *priv,
1336 struct v4l2_dbg_chip_info *chip)
1337{
1338 struct em28xx_fh *fh = priv;
1339 struct em28xx *dev = fh->dev;
1340
1341 if (chip->match.addr > 1)
1342 return -EINVAL;
1343 if (chip->match.addr == 1)
1344 strlcpy(chip->name, "ac97", sizeof(chip->name));
1345 else
1346 strlcpy(chip->name, dev->v4l2_dev.name, sizeof(chip->name));
1347 return 0;
1348}
1349
1350static int em28xx_reg_len(int reg)
1351{
1352 switch (reg) {
1353 case EM28XX_R40_AC97LSB:
1354 case EM28XX_R30_HSCALELOW:
1355 case EM28XX_R32_VSCALELOW:
1356 return 2;
1357 default:
1358 return 1;
1359 }
1360}
1361
1362static int vidioc_g_register(struct file *file, void *priv,
1363 struct v4l2_dbg_register *reg)
1364{
1365 struct em28xx_fh *fh = priv;
1366 struct em28xx *dev = fh->dev;
1367 int ret;
1368
1369 switch (reg->match.type) {
1370 case V4L2_CHIP_MATCH_BRIDGE:
1371 if (reg->match.addr > 1)
1372 return -EINVAL;
1373 if (!reg->match.addr)
1374 break;
1375
1376 case V4L2_CHIP_MATCH_AC97:
1377 ret = em28xx_read_ac97(dev, reg->reg);
1378 if (ret < 0)
1379 return ret;
1380
1381 reg->val = ret;
1382 reg->size = 1;
1383 return 0;
1384 case V4L2_CHIP_MATCH_I2C_DRIVER:
1385 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1386 return 0;
1387 case V4L2_CHIP_MATCH_I2C_ADDR:
1388
1389 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1390 return 0;
1391 default:
1392 return -EINVAL;
1393 }
1394
1395
1396 reg->size = em28xx_reg_len(reg->reg);
1397 if (reg->size == 1) {
1398 ret = em28xx_read_reg(dev, reg->reg);
1399
1400 if (ret < 0)
1401 return ret;
1402
1403 reg->val = ret;
1404 } else {
1405 __le16 val = 0;
1406 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1407 reg->reg, (char *)&val, 2);
1408 if (ret < 0)
1409 return ret;
1410
1411 reg->val = le16_to_cpu(val);
1412 }
1413
1414 return 0;
1415}
1416
1417static int vidioc_s_register(struct file *file, void *priv,
1418 const struct v4l2_dbg_register *reg)
1419{
1420 struct em28xx_fh *fh = priv;
1421 struct em28xx *dev = fh->dev;
1422 __le16 buf;
1423
1424 switch (reg->match.type) {
1425 case V4L2_CHIP_MATCH_BRIDGE:
1426 if (reg->match.addr > 1)
1427 return -EINVAL;
1428 if (!reg->match.addr)
1429 break;
1430
1431 case V4L2_CHIP_MATCH_AC97:
1432 return em28xx_write_ac97(dev, reg->reg, reg->val);
1433 case V4L2_CHIP_MATCH_I2C_DRIVER:
1434 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1435 return 0;
1436 case V4L2_CHIP_MATCH_I2C_ADDR:
1437
1438 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1439 return 0;
1440 default:
1441 return -EINVAL;
1442 }
1443
1444
1445 buf = cpu_to_le16(reg->val);
1446
1447 return em28xx_write_regs(dev, reg->reg, (char *)&buf,
1448 em28xx_reg_len(reg->reg));
1449}
1450#endif
1451
1452
1453static int vidioc_querycap(struct file *file, void *priv,
1454 struct v4l2_capability *cap)
1455{
1456 struct video_device *vdev = video_devdata(file);
1457 struct em28xx_fh *fh = priv;
1458 struct em28xx *dev = fh->dev;
1459
1460 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1461 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1462 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1463
1464 if (vdev->vfl_type == VFL_TYPE_GRABBER)
1465 cap->device_caps = V4L2_CAP_READWRITE |
1466 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1467 else if (vdev->vfl_type == VFL_TYPE_RADIO)
1468 cap->device_caps = V4L2_CAP_RADIO;
1469 else
1470 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_VBI_CAPTURE;
1471
1472 if (dev->audio_mode.has_audio)
1473 cap->device_caps |= V4L2_CAP_AUDIO;
1474
1475 if (dev->tuner_type != TUNER_ABSENT)
1476 cap->device_caps |= V4L2_CAP_TUNER;
1477
1478 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
1479 V4L2_CAP_READWRITE | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1480 if (dev->vbi_dev)
1481 cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
1482 if (dev->radio_dev)
1483 cap->capabilities |= V4L2_CAP_RADIO;
1484 return 0;
1485}
1486
1487static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1488 struct v4l2_fmtdesc *f)
1489{
1490 if (unlikely(f->index >= ARRAY_SIZE(format)))
1491 return -EINVAL;
1492
1493 strlcpy(f->description, format[f->index].name, sizeof(f->description));
1494 f->pixelformat = format[f->index].fourcc;
1495
1496 return 0;
1497}
1498
1499static int vidioc_enum_framesizes(struct file *file, void *priv,
1500 struct v4l2_frmsizeenum *fsize)
1501{
1502 struct em28xx_fh *fh = priv;
1503 struct em28xx *dev = fh->dev;
1504 struct em28xx_fmt *fmt;
1505 unsigned int maxw = norm_maxw(dev);
1506 unsigned int maxh = norm_maxh(dev);
1507
1508 fmt = format_by_fourcc(fsize->pixel_format);
1509 if (!fmt) {
1510 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
1511 fsize->pixel_format);
1512 return -EINVAL;
1513 }
1514
1515 if (dev->board.is_em2800) {
1516 if (fsize->index > 1)
1517 return -EINVAL;
1518 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1519 fsize->discrete.width = maxw / (1 + fsize->index);
1520 fsize->discrete.height = maxh / (1 + fsize->index);
1521 return 0;
1522 }
1523
1524 if (fsize->index != 0)
1525 return -EINVAL;
1526
1527
1528 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1529 scale_to_size(dev, EM28XX_HVSCALE_MAX, EM28XX_HVSCALE_MAX,
1530 &fsize->stepwise.min_width, &fsize->stepwise.min_height);
1531 if (fsize->stepwise.min_width < 48)
1532 fsize->stepwise.min_width = 48;
1533 if (fsize->stepwise.min_height < 38)
1534 fsize->stepwise.min_height = 38;
1535 fsize->stepwise.max_width = maxw;
1536 fsize->stepwise.max_height = maxh;
1537 fsize->stepwise.step_width = 1;
1538 fsize->stepwise.step_height = 1;
1539 return 0;
1540}
1541
1542
1543
1544static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1545 struct v4l2_format *format)
1546{
1547 struct em28xx_fh *fh = priv;
1548 struct em28xx *dev = fh->dev;
1549
1550 format->fmt.vbi.samples_per_line = dev->vbi_width;
1551 format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1552 format->fmt.vbi.offset = 0;
1553 format->fmt.vbi.flags = 0;
1554 format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1555 format->fmt.vbi.count[0] = dev->vbi_height;
1556 format->fmt.vbi.count[1] = dev->vbi_height;
1557 memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
1558
1559
1560 if (dev->norm & V4L2_STD_525_60) {
1561
1562 format->fmt.vbi.start[0] = 10;
1563 format->fmt.vbi.start[1] = 273;
1564 } else if (dev->norm & V4L2_STD_625_50) {
1565
1566 format->fmt.vbi.start[0] = 6;
1567 format->fmt.vbi.start[1] = 318;
1568 }
1569
1570 return 0;
1571}
1572
1573
1574
1575
1576
1577static int radio_g_tuner(struct file *file, void *priv,
1578 struct v4l2_tuner *t)
1579{
1580 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1581
1582 if (unlikely(t->index > 0))
1583 return -EINVAL;
1584
1585 strcpy(t->name, "Radio");
1586
1587 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1588
1589 return 0;
1590}
1591
1592static int radio_s_tuner(struct file *file, void *priv,
1593 const struct v4l2_tuner *t)
1594{
1595 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1596
1597 if (0 != t->index)
1598 return -EINVAL;
1599
1600 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1601
1602 return 0;
1603}
1604
1605
1606
1607
1608
1609static int em28xx_v4l2_open(struct file *filp)
1610{
1611 struct video_device *vdev = video_devdata(filp);
1612 struct em28xx *dev = video_drvdata(filp);
1613 enum v4l2_buf_type fh_type = 0;
1614 struct em28xx_fh *fh;
1615
1616 switch (vdev->vfl_type) {
1617 case VFL_TYPE_GRABBER:
1618 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1619 break;
1620 case VFL_TYPE_VBI:
1621 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1622 break;
1623 }
1624
1625 em28xx_videodbg("open dev=%s type=%s users=%d\n",
1626 video_device_node_name(vdev), v4l2_type_names[fh_type],
1627 dev->users);
1628
1629
1630 if (mutex_lock_interruptible(&dev->lock))
1631 return -ERESTARTSYS;
1632 fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
1633 if (!fh) {
1634 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1635 mutex_unlock(&dev->lock);
1636 return -ENOMEM;
1637 }
1638 v4l2_fh_init(&fh->fh, vdev);
1639 fh->dev = dev;
1640 fh->type = fh_type;
1641 filp->private_data = fh;
1642
1643 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1644 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
1645 em28xx_resolution_set(dev);
1646
1647
1648
1649
1650 em28xx_wake_i2c(dev);
1651
1652 }
1653
1654 if (vdev->vfl_type == VFL_TYPE_RADIO) {
1655 em28xx_videodbg("video_open: setting radio device\n");
1656 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1657 }
1658
1659 dev->users++;
1660
1661 mutex_unlock(&dev->lock);
1662 v4l2_fh_add(&fh->fh);
1663
1664 return 0;
1665}
1666
1667
1668
1669
1670
1671
1672void em28xx_release_analog_resources(struct em28xx *dev)
1673{
1674
1675
1676
1677 if (dev->radio_dev) {
1678 if (video_is_registered(dev->radio_dev))
1679 video_unregister_device(dev->radio_dev);
1680 else
1681 video_device_release(dev->radio_dev);
1682 dev->radio_dev = NULL;
1683 }
1684 if (dev->vbi_dev) {
1685 em28xx_info("V4L2 device %s deregistered\n",
1686 video_device_node_name(dev->vbi_dev));
1687 if (video_is_registered(dev->vbi_dev))
1688 video_unregister_device(dev->vbi_dev);
1689 else
1690 video_device_release(dev->vbi_dev);
1691 dev->vbi_dev = NULL;
1692 }
1693 if (dev->vdev) {
1694 em28xx_info("V4L2 device %s deregistered\n",
1695 video_device_node_name(dev->vdev));
1696 if (video_is_registered(dev->vdev))
1697 video_unregister_device(dev->vdev);
1698 else
1699 video_device_release(dev->vdev);
1700 dev->vdev = NULL;
1701 }
1702}
1703
1704
1705
1706
1707
1708
1709static int em28xx_v4l2_close(struct file *filp)
1710{
1711 struct em28xx_fh *fh = filp->private_data;
1712 struct em28xx *dev = fh->dev;
1713 int errCode;
1714
1715 em28xx_videodbg("users=%d\n", dev->users);
1716
1717 mutex_lock(&dev->lock);
1718 vb2_fop_release(filp);
1719
1720 if (dev->users == 1) {
1721
1722
1723 if (dev->disconnected) {
1724 em28xx_release_resources(dev);
1725 kfree(dev->alt_max_pkt_size_isoc);
1726 mutex_unlock(&dev->lock);
1727 kfree(dev);
1728 return 0;
1729 }
1730
1731
1732 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
1733
1734
1735 em28xx_set_mode(dev, EM28XX_SUSPEND);
1736
1737
1738 dev->alt = 0;
1739 em28xx_videodbg("setting alternate 0\n");
1740 errCode = usb_set_interface(dev->udev, 0, 0);
1741 if (errCode < 0) {
1742 em28xx_errdev("cannot change alternate number to "
1743 "0 (error=%i)\n", errCode);
1744 }
1745 }
1746
1747 dev->users--;
1748 mutex_unlock(&dev->lock);
1749 return 0;
1750}
1751
1752static const struct v4l2_file_operations em28xx_v4l_fops = {
1753 .owner = THIS_MODULE,
1754 .open = em28xx_v4l2_open,
1755 .release = em28xx_v4l2_close,
1756 .read = vb2_fop_read,
1757 .poll = vb2_fop_poll,
1758 .mmap = vb2_fop_mmap,
1759 .unlocked_ioctl = video_ioctl2,
1760};
1761
1762static const struct v4l2_ioctl_ops video_ioctl_ops = {
1763 .vidioc_querycap = vidioc_querycap,
1764 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1765 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1766 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1767 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1768 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1769 .vidioc_try_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1770 .vidioc_s_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1771 .vidioc_enum_framesizes = vidioc_enum_framesizes,
1772 .vidioc_g_audio = vidioc_g_audio,
1773 .vidioc_s_audio = vidioc_s_audio,
1774
1775 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1776 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1777 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1778 .vidioc_querybuf = vb2_ioctl_querybuf,
1779 .vidioc_qbuf = vb2_ioctl_qbuf,
1780 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1781
1782 .vidioc_g_std = vidioc_g_std,
1783 .vidioc_querystd = vidioc_querystd,
1784 .vidioc_s_std = vidioc_s_std,
1785 .vidioc_g_parm = vidioc_g_parm,
1786 .vidioc_s_parm = vidioc_s_parm,
1787 .vidioc_enum_input = vidioc_enum_input,
1788 .vidioc_g_input = vidioc_g_input,
1789 .vidioc_s_input = vidioc_s_input,
1790 .vidioc_streamon = vb2_ioctl_streamon,
1791 .vidioc_streamoff = vb2_ioctl_streamoff,
1792 .vidioc_g_tuner = vidioc_g_tuner,
1793 .vidioc_s_tuner = vidioc_s_tuner,
1794 .vidioc_g_frequency = vidioc_g_frequency,
1795 .vidioc_s_frequency = vidioc_s_frequency,
1796 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1797 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1798 .vidioc_g_chip_ident = vidioc_g_chip_ident,
1799#ifdef CONFIG_VIDEO_ADV_DEBUG
1800 .vidioc_g_chip_info = vidioc_g_chip_info,
1801 .vidioc_g_register = vidioc_g_register,
1802 .vidioc_s_register = vidioc_s_register,
1803#endif
1804};
1805
1806static const struct video_device em28xx_video_template = {
1807 .fops = &em28xx_v4l_fops,
1808 .release = video_device_release_empty,
1809 .ioctl_ops = &video_ioctl_ops,
1810
1811 .tvnorms = V4L2_STD_ALL,
1812};
1813
1814static const struct v4l2_file_operations radio_fops = {
1815 .owner = THIS_MODULE,
1816 .open = em28xx_v4l2_open,
1817 .release = em28xx_v4l2_close,
1818 .unlocked_ioctl = video_ioctl2,
1819};
1820
1821static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1822 .vidioc_querycap = vidioc_querycap,
1823 .vidioc_g_tuner = radio_g_tuner,
1824 .vidioc_s_tuner = radio_s_tuner,
1825 .vidioc_g_frequency = vidioc_g_frequency,
1826 .vidioc_s_frequency = vidioc_s_frequency,
1827 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1828 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1829 .vidioc_g_chip_ident = vidioc_g_chip_ident,
1830#ifdef CONFIG_VIDEO_ADV_DEBUG
1831 .vidioc_g_chip_info = vidioc_g_chip_info,
1832 .vidioc_g_register = vidioc_g_register,
1833 .vidioc_s_register = vidioc_s_register,
1834#endif
1835};
1836
1837static struct video_device em28xx_radio_template = {
1838 .name = "em28xx-radio",
1839 .fops = &radio_fops,
1840 .ioctl_ops = &radio_ioctl_ops,
1841};
1842
1843
1844
1845
1846
1847static struct video_device *em28xx_vdev_init(struct em28xx *dev,
1848 const struct video_device *template,
1849 const char *type_name)
1850{
1851 struct video_device *vfd;
1852
1853 vfd = video_device_alloc();
1854 if (NULL == vfd)
1855 return NULL;
1856
1857 *vfd = *template;
1858 vfd->v4l2_dev = &dev->v4l2_dev;
1859 vfd->debug = video_debug;
1860 vfd->lock = &dev->lock;
1861 set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
1862 if (dev->board.is_webcam)
1863 vfd->tvnorms = 0;
1864
1865 snprintf(vfd->name, sizeof(vfd->name), "%s %s",
1866 dev->name, type_name);
1867
1868 video_set_drvdata(vfd, dev);
1869 return vfd;
1870}
1871
1872int em28xx_register_analog_devices(struct em28xx *dev)
1873{
1874 u8 val;
1875 int ret;
1876 unsigned int maxw;
1877
1878 printk(KERN_INFO "%s: v4l2 driver version %s\n",
1879 dev->name, EM28XX_VERSION);
1880
1881
1882 dev->norm = V4L2_STD_PAL;
1883 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1884 dev->interlaced = EM28XX_INTERLACED_DEFAULT;
1885
1886
1887 dev->format = &format[0];
1888
1889 maxw = norm_maxw(dev);
1890
1891
1892 if (dev->board.is_em2800)
1893 maxw /= 2;
1894
1895 em28xx_set_video_format(dev, format[0].fourcc,
1896 maxw, norm_maxh(dev));
1897
1898 video_mux(dev, 0);
1899
1900
1901 dev->mute = 1;
1902 dev->volume = 0x1f;
1903
1904
1905 val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
1906 em28xx_write_reg(dev, EM28XX_R0F_XCLK,
1907 (EM28XX_XCLK_AUDIO_UNMUTE | val));
1908
1909 em28xx_set_outfmt(dev);
1910 em28xx_compression_disable(dev);
1911
1912
1913
1914
1915 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_CONTRAST))
1916 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1917 V4L2_CID_CONTRAST,
1918 0, 0x1f, 1, CONTRAST_DEFAULT);
1919 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_BRIGHTNESS))
1920 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1921 V4L2_CID_BRIGHTNESS,
1922 -0x80, 0x7f, 1, BRIGHTNESS_DEFAULT);
1923 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_SATURATION))
1924 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1925 V4L2_CID_SATURATION,
1926 0, 0x1f, 1, SATURATION_DEFAULT);
1927 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_BLUE_BALANCE))
1928 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1929 V4L2_CID_BLUE_BALANCE,
1930 -0x30, 0x30, 1, BLUE_BALANCE_DEFAULT);
1931 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_RED_BALANCE))
1932 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1933 V4L2_CID_RED_BALANCE,
1934 -0x30, 0x30, 1, RED_BALANCE_DEFAULT);
1935 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_SHARPNESS))
1936 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1937 V4L2_CID_SHARPNESS,
1938 0, 0x0f, 1, SHARPNESS_DEFAULT);
1939
1940
1941 em28xx_colorlevels_set_default(dev);
1942 v4l2_ctrl_handler_setup(&dev->ctrl_handler);
1943 if (dev->ctrl_handler.error)
1944 return dev->ctrl_handler.error;
1945
1946
1947 dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
1948 if (!dev->vdev) {
1949 em28xx_errdev("cannot allocate video_device.\n");
1950 return -ENODEV;
1951 }
1952 dev->vdev->queue = &dev->vb_vidq;
1953 dev->vdev->queue->lock = &dev->vb_queue_lock;
1954
1955
1956 if (dev->board.is_webcam) {
1957 v4l2_disable_ioctl(dev->vdev, VIDIOC_QUERYSTD);
1958 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_STD);
1959 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_STD);
1960 } else {
1961 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM);
1962 }
1963 if (dev->tuner_type == TUNER_ABSENT) {
1964 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_TUNER);
1965 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_TUNER);
1966 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_FREQUENCY);
1967 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_FREQUENCY);
1968 }
1969 if (!dev->audio_mode.has_audio) {
1970 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_AUDIO);
1971 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_AUDIO);
1972 }
1973
1974
1975 ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
1976 video_nr[dev->devno]);
1977 if (ret) {
1978 em28xx_errdev("unable to register video device (error=%i).\n",
1979 ret);
1980 return ret;
1981 }
1982
1983
1984 if (em28xx_vbi_supported(dev) == 1) {
1985 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
1986 "vbi");
1987
1988 dev->vbi_dev->queue = &dev->vb_vbiq;
1989 dev->vbi_dev->queue->lock = &dev->vb_vbi_queue_lock;
1990
1991
1992 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM);
1993 if (dev->tuner_type == TUNER_ABSENT) {
1994 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_TUNER);
1995 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_TUNER);
1996 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_FREQUENCY);
1997 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_FREQUENCY);
1998 }
1999 if (!dev->audio_mode.has_audio) {
2000 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_AUDIO);
2001 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_AUDIO);
2002 }
2003
2004
2005 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2006 vbi_nr[dev->devno]);
2007 if (ret < 0) {
2008 em28xx_errdev("unable to register vbi device\n");
2009 return ret;
2010 }
2011 }
2012
2013 if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2014 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2015 "radio");
2016 if (!dev->radio_dev) {
2017 em28xx_errdev("cannot allocate video_device.\n");
2018 return -ENODEV;
2019 }
2020 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2021 radio_nr[dev->devno]);
2022 if (ret < 0) {
2023 em28xx_errdev("can't register radio device\n");
2024 return ret;
2025 }
2026 em28xx_info("Registered radio device as %s\n",
2027 video_device_node_name(dev->radio_dev));
2028 }
2029
2030 em28xx_info("V4L2 video device registered as %s\n",
2031 video_device_node_name(dev->vdev));
2032
2033 if (dev->vbi_dev)
2034 em28xx_info("V4L2 VBI device registered as %s\n",
2035 video_device_node_name(dev->vbi_dev));
2036
2037 return 0;
2038}
2039
