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