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Merge branch 'keys-asym-keyctl' into keys-next
[deliverable/linux.git] / drivers / media / usb / tm6000 / tm6000-video.c
1 /*
2 * tm6000-video.c - driver for TM5600/TM6000/TM6010 USB video capture devices
3 *
4 * Copyright (C) 2006-2007 Mauro Carvalho Chehab <mchehab@infradead.org>
5 *
6 * Copyright (C) 2007 Michel Ludwig <michel.ludwig@gmail.com>
7 * - Fixed module load/unload
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation version 2
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 */
22
23 #include <linux/module.h>
24 #include <linux/delay.h>
25 #include <linux/errno.h>
26 #include <linux/fs.h>
27 #include <linux/kernel.h>
28 #include <linux/slab.h>
29 #include <linux/mm.h>
30 #include <linux/ioport.h>
31 #include <linux/init.h>
32 #include <linux/sched.h>
33 #include <linux/random.h>
34 #include <linux/usb.h>
35 #include <linux/videodev2.h>
36 #include <media/v4l2-ioctl.h>
37 #include <media/v4l2-event.h>
38 #include <media/tuner.h>
39 #include <linux/interrupt.h>
40 #include <linux/kthread.h>
41 #include <linux/highmem.h>
42 #include <linux/freezer.h>
43
44 #include "tm6000-regs.h"
45 #include "tm6000.h"
46
47 #define BUFFER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
48
49 /* Limits minimum and default number of buffers */
50 #define TM6000_MIN_BUF 4
51 #define TM6000_DEF_BUF 8
52
53 #define TM6000_NUM_URB_BUF 8
54
55 #define TM6000_MAX_ISO_PACKETS 46 /* Max number of ISO packets */
56
57 /* Declare static vars that will be used as parameters */
58 static unsigned int vid_limit = 16; /* Video memory limit, in Mb */
59 static int video_nr = -1; /* /dev/videoN, -1 for autodetect */
60 static int radio_nr = -1; /* /dev/radioN, -1 for autodetect */
61 static bool keep_urb; /* keep urb buffers allocated */
62
63 /* Debug level */
64 int tm6000_debug;
65 EXPORT_SYMBOL_GPL(tm6000_debug);
66
67 static struct tm6000_fmt format[] = {
68 {
69 .name = "4:2:2, packed, YVY2",
70 .fourcc = V4L2_PIX_FMT_YUYV,
71 .depth = 16,
72 }, {
73 .name = "4:2:2, packed, UYVY",
74 .fourcc = V4L2_PIX_FMT_UYVY,
75 .depth = 16,
76 }, {
77 .name = "A/V + VBI mux packet",
78 .fourcc = V4L2_PIX_FMT_TM6000,
79 .depth = 16,
80 }
81 };
82
83 /* ------------------------------------------------------------------
84 * DMA and thread functions
85 * ------------------------------------------------------------------
86 */
87
88 #define norm_maxw(a) 720
89 #define norm_maxh(a) 576
90
91 #define norm_minw(a) norm_maxw(a)
92 #define norm_minh(a) norm_maxh(a)
93
94 /*
95 * video-buf generic routine to get the next available buffer
96 */
97 static inline void get_next_buf(struct tm6000_dmaqueue *dma_q,
98 struct tm6000_buffer **buf)
99 {
100 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
101
102 if (list_empty(&dma_q->active)) {
103 dprintk(dev, V4L2_DEBUG_QUEUE, "No active queue to serve\n");
104 *buf = NULL;
105 return;
106 }
107
108 *buf = list_entry(dma_q->active.next,
109 struct tm6000_buffer, vb.queue);
110 }
111
112 /*
113 * Announces that a buffer were filled and request the next
114 */
115 static inline void buffer_filled(struct tm6000_core *dev,
116 struct tm6000_dmaqueue *dma_q,
117 struct tm6000_buffer *buf)
118 {
119 /* Advice that buffer was filled */
120 dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n", buf, buf->vb.i);
121 buf->vb.state = VIDEOBUF_DONE;
122 buf->vb.field_count++;
123 v4l2_get_timestamp(&buf->vb.ts);
124
125 list_del(&buf->vb.queue);
126 wake_up(&buf->vb.done);
127 }
128
129 /*
130 * Identify the tm5600/6000 buffer header type and properly handles
131 */
132 static int copy_streams(u8 *data, unsigned long len,
133 struct urb *urb)
134 {
135 struct tm6000_dmaqueue *dma_q = urb->context;
136 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
137 u8 *ptr = data, *endp = data+len;
138 unsigned long header = 0;
139 int rc = 0;
140 unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
141 struct tm6000_buffer *vbuf = NULL;
142 char *voutp = NULL;
143 unsigned int linewidth;
144
145 if (!dev->radio) {
146 /* get video buffer */
147 get_next_buf(dma_q, &vbuf);
148
149 if (!vbuf)
150 return rc;
151 voutp = videobuf_to_vmalloc(&vbuf->vb);
152
153 if (!voutp)
154 return 0;
155 }
156
157 for (ptr = data; ptr < endp;) {
158 if (!dev->isoc_ctl.cmd) {
159 /* Header */
160 if (dev->isoc_ctl.tmp_buf_len > 0) {
161 /* from last urb or packet */
162 header = dev->isoc_ctl.tmp_buf;
163 if (4 - dev->isoc_ctl.tmp_buf_len > 0) {
164 memcpy((u8 *)&header +
165 dev->isoc_ctl.tmp_buf_len,
166 ptr,
167 4 - dev->isoc_ctl.tmp_buf_len);
168 ptr += 4 - dev->isoc_ctl.tmp_buf_len;
169 }
170 dev->isoc_ctl.tmp_buf_len = 0;
171 } else {
172 if (ptr + 3 >= endp) {
173 /* have incomplete header */
174 dev->isoc_ctl.tmp_buf_len = endp - ptr;
175 memcpy(&dev->isoc_ctl.tmp_buf, ptr,
176 dev->isoc_ctl.tmp_buf_len);
177 return rc;
178 }
179 /* Seek for sync */
180 for (; ptr < endp - 3; ptr++) {
181 if (*(ptr + 3) == 0x47)
182 break;
183 }
184 /* Get message header */
185 header = *(unsigned long *)ptr;
186 ptr += 4;
187 }
188
189 /* split the header fields */
190 size = ((header & 0x7e) << 1);
191 if (size > 0)
192 size -= 4;
193 block = (header >> 7) & 0xf;
194 field = (header >> 11) & 0x1;
195 line = (header >> 12) & 0x1ff;
196 cmd = (header >> 21) & 0x7;
197 /* Validates haeder fields */
198 if (size > TM6000_URB_MSG_LEN)
199 size = TM6000_URB_MSG_LEN;
200 pktsize = TM6000_URB_MSG_LEN;
201 /*
202 * calculate position in buffer and change the buffer
203 */
204 switch (cmd) {
205 case TM6000_URB_MSG_VIDEO:
206 if (!dev->radio) {
207 if ((dev->isoc_ctl.vfield != field) &&
208 (field == 1)) {
209 /*
210 * Announces that a new buffer
211 * were filled
212 */
213 buffer_filled(dev, dma_q, vbuf);
214 dprintk(dev, V4L2_DEBUG_ISOC,
215 "new buffer filled\n");
216 get_next_buf(dma_q, &vbuf);
217 if (!vbuf)
218 return rc;
219 voutp = videobuf_to_vmalloc(&vbuf->vb);
220 if (!voutp)
221 return rc;
222 memset(voutp, 0, vbuf->vb.size);
223 }
224 linewidth = vbuf->vb.width << 1;
225 pos = ((line << 1) - field - 1) *
226 linewidth + block * TM6000_URB_MSG_LEN;
227 /* Don't allow to write out of the buffer */
228 if (pos + size > vbuf->vb.size)
229 cmd = TM6000_URB_MSG_ERR;
230 dev->isoc_ctl.vfield = field;
231 }
232 break;
233 case TM6000_URB_MSG_VBI:
234 break;
235 case TM6000_URB_MSG_AUDIO:
236 case TM6000_URB_MSG_PTS:
237 size = pktsize; /* Size is always 180 bytes */
238 break;
239 }
240 } else {
241 /* Continue the last copy */
242 cmd = dev->isoc_ctl.cmd;
243 size = dev->isoc_ctl.size;
244 pos = dev->isoc_ctl.pos;
245 pktsize = dev->isoc_ctl.pktsize;
246 field = dev->isoc_ctl.field;
247 }
248 cpysize = (endp - ptr > size) ? size : endp - ptr;
249 if (cpysize) {
250 /* copy data in different buffers */
251 switch (cmd) {
252 case TM6000_URB_MSG_VIDEO:
253 /* Fills video buffer */
254 if (vbuf)
255 memcpy(&voutp[pos], ptr, cpysize);
256 break;
257 case TM6000_URB_MSG_AUDIO: {
258 int i;
259 for (i = 0; i < cpysize; i += 2)
260 swab16s((u16 *)(ptr + i));
261
262 tm6000_call_fillbuf(dev, TM6000_AUDIO, ptr, cpysize);
263 break;
264 }
265 case TM6000_URB_MSG_VBI:
266 /* Need some code to copy vbi buffer */
267 break;
268 case TM6000_URB_MSG_PTS: {
269 /* Need some code to copy pts */
270 u32 pts;
271 pts = *(u32 *)ptr;
272 dprintk(dev, V4L2_DEBUG_ISOC, "field %d, PTS %x",
273 field, pts);
274 break;
275 }
276 }
277 }
278 if (ptr + pktsize > endp) {
279 /*
280 * End of URB packet, but cmd processing is not
281 * complete. Preserve the state for a next packet
282 */
283 dev->isoc_ctl.pos = pos + cpysize;
284 dev->isoc_ctl.size = size - cpysize;
285 dev->isoc_ctl.cmd = cmd;
286 dev->isoc_ctl.field = field;
287 dev->isoc_ctl.pktsize = pktsize - (endp - ptr);
288 ptr += endp - ptr;
289 } else {
290 dev->isoc_ctl.cmd = 0;
291 ptr += pktsize;
292 }
293 }
294 return 0;
295 }
296
297 /*
298 * Identify the tm5600/6000 buffer header type and properly handles
299 */
300 static int copy_multiplexed(u8 *ptr, unsigned long len,
301 struct urb *urb)
302 {
303 struct tm6000_dmaqueue *dma_q = urb->context;
304 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
305 unsigned int pos = dev->isoc_ctl.pos, cpysize;
306 int rc = 1;
307 struct tm6000_buffer *buf;
308 char *outp = NULL;
309
310 get_next_buf(dma_q, &buf);
311 if (buf)
312 outp = videobuf_to_vmalloc(&buf->vb);
313
314 if (!outp)
315 return 0;
316
317 while (len > 0) {
318 cpysize = min(len, buf->vb.size-pos);
319 memcpy(&outp[pos], ptr, cpysize);
320 pos += cpysize;
321 ptr += cpysize;
322 len -= cpysize;
323 if (pos >= buf->vb.size) {
324 pos = 0;
325 /* Announces that a new buffer were filled */
326 buffer_filled(dev, dma_q, buf);
327 dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
328 get_next_buf(dma_q, &buf);
329 if (!buf)
330 break;
331 outp = videobuf_to_vmalloc(&(buf->vb));
332 if (!outp)
333 return rc;
334 pos = 0;
335 }
336 }
337
338 dev->isoc_ctl.pos = pos;
339 return rc;
340 }
341
342 static inline void print_err_status(struct tm6000_core *dev,
343 int packet, int status)
344 {
345 char *errmsg = "Unknown";
346
347 switch (status) {
348 case -ENOENT:
349 errmsg = "unlinked synchronuously";
350 break;
351 case -ECONNRESET:
352 errmsg = "unlinked asynchronuously";
353 break;
354 case -ENOSR:
355 errmsg = "Buffer error (overrun)";
356 break;
357 case -EPIPE:
358 errmsg = "Stalled (device not responding)";
359 break;
360 case -EOVERFLOW:
361 errmsg = "Babble (bad cable?)";
362 break;
363 case -EPROTO:
364 errmsg = "Bit-stuff error (bad cable?)";
365 break;
366 case -EILSEQ:
367 errmsg = "CRC/Timeout (could be anything)";
368 break;
369 case -ETIME:
370 errmsg = "Device does not respond";
371 break;
372 }
373 if (packet < 0) {
374 dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
375 status, errmsg);
376 } else {
377 dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n",
378 packet, status, errmsg);
379 }
380 }
381
382
383 /*
384 * Controls the isoc copy of each urb packet
385 */
386 static inline int tm6000_isoc_copy(struct urb *urb)
387 {
388 struct tm6000_dmaqueue *dma_q = urb->context;
389 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
390 int i, len = 0, rc = 1, status;
391 char *p;
392
393 if (urb->status < 0) {
394 print_err_status(dev, -1, urb->status);
395 return 0;
396 }
397
398 for (i = 0; i < urb->number_of_packets; i++) {
399 status = urb->iso_frame_desc[i].status;
400
401 if (status < 0) {
402 print_err_status(dev, i, status);
403 continue;
404 }
405
406 len = urb->iso_frame_desc[i].actual_length;
407
408 if (len > 0) {
409 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
410 if (!urb->iso_frame_desc[i].status) {
411 if ((dev->fourcc) == V4L2_PIX_FMT_TM6000) {
412 rc = copy_multiplexed(p, len, urb);
413 if (rc <= 0)
414 return rc;
415 } else {
416 copy_streams(p, len, urb);
417 }
418 }
419 }
420 }
421 return rc;
422 }
423
424 /* ------------------------------------------------------------------
425 * URB control
426 * ------------------------------------------------------------------
427 */
428
429 /*
430 * IRQ callback, called by URB callback
431 */
432 static void tm6000_irq_callback(struct urb *urb)
433 {
434 struct tm6000_dmaqueue *dma_q = urb->context;
435 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
436 int i;
437
438 switch (urb->status) {
439 case 0:
440 case -ETIMEDOUT:
441 break;
442
443 case -ECONNRESET:
444 case -ENOENT:
445 case -ESHUTDOWN:
446 return;
447
448 default:
449 tm6000_err("urb completion error %d.\n", urb->status);
450 break;
451 }
452
453 spin_lock(&dev->slock);
454 tm6000_isoc_copy(urb);
455 spin_unlock(&dev->slock);
456
457 /* Reset urb buffers */
458 for (i = 0; i < urb->number_of_packets; i++) {
459 urb->iso_frame_desc[i].status = 0;
460 urb->iso_frame_desc[i].actual_length = 0;
461 }
462
463 urb->status = usb_submit_urb(urb, GFP_ATOMIC);
464 if (urb->status)
465 tm6000_err("urb resubmit failed (error=%i)\n",
466 urb->status);
467 }
468
469 /*
470 * Allocate URB buffers
471 */
472 static int tm6000_alloc_urb_buffers(struct tm6000_core *dev)
473 {
474 int num_bufs = TM6000_NUM_URB_BUF;
475 int i;
476
477 if (dev->urb_buffer != NULL)
478 return 0;
479
480 dev->urb_buffer = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
481 if (!dev->urb_buffer) {
482 tm6000_err("cannot allocate memory for urb buffers\n");
483 return -ENOMEM;
484 }
485
486 dev->urb_dma = kmalloc(sizeof(dma_addr_t *)*num_bufs, GFP_KERNEL);
487 if (!dev->urb_dma) {
488 tm6000_err("cannot allocate memory for urb dma pointers\n");
489 return -ENOMEM;
490 }
491
492 for (i = 0; i < num_bufs; i++) {
493 dev->urb_buffer[i] = usb_alloc_coherent(
494 dev->udev, dev->urb_size,
495 GFP_KERNEL, &dev->urb_dma[i]);
496 if (!dev->urb_buffer[i]) {
497 tm6000_err("unable to allocate %i bytes for transfer buffer %i\n",
498 dev->urb_size, i);
499 return -ENOMEM;
500 }
501 memset(dev->urb_buffer[i], 0, dev->urb_size);
502 }
503
504 return 0;
505 }
506
507 /*
508 * Free URB buffers
509 */
510 static int tm6000_free_urb_buffers(struct tm6000_core *dev)
511 {
512 int i;
513
514 if (dev->urb_buffer == NULL)
515 return 0;
516
517 for (i = 0; i < TM6000_NUM_URB_BUF; i++) {
518 if (dev->urb_buffer[i]) {
519 usb_free_coherent(dev->udev,
520 dev->urb_size,
521 dev->urb_buffer[i],
522 dev->urb_dma[i]);
523 dev->urb_buffer[i] = NULL;
524 }
525 }
526 kfree(dev->urb_buffer);
527 kfree(dev->urb_dma);
528 dev->urb_buffer = NULL;
529 dev->urb_dma = NULL;
530
531 return 0;
532 }
533
534 /*
535 * Stop and Deallocate URBs
536 */
537 static void tm6000_uninit_isoc(struct tm6000_core *dev)
538 {
539 struct urb *urb;
540 int i;
541
542 dev->isoc_ctl.buf = NULL;
543 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
544 urb = dev->isoc_ctl.urb[i];
545 if (urb) {
546 usb_kill_urb(urb);
547 usb_unlink_urb(urb);
548 usb_free_urb(urb);
549 dev->isoc_ctl.urb[i] = NULL;
550 }
551 dev->isoc_ctl.transfer_buffer[i] = NULL;
552 }
553
554 if (!keep_urb)
555 tm6000_free_urb_buffers(dev);
556
557 kfree(dev->isoc_ctl.urb);
558 kfree(dev->isoc_ctl.transfer_buffer);
559
560 dev->isoc_ctl.urb = NULL;
561 dev->isoc_ctl.transfer_buffer = NULL;
562 dev->isoc_ctl.num_bufs = 0;
563 }
564
565 /*
566 * Assign URBs and start IRQ
567 */
568 static int tm6000_prepare_isoc(struct tm6000_core *dev)
569 {
570 struct tm6000_dmaqueue *dma_q = &dev->vidq;
571 int i, j, sb_size, pipe, size, max_packets;
572 int num_bufs = TM6000_NUM_URB_BUF;
573 struct urb *urb;
574
575 /* De-allocates all pending stuff */
576 tm6000_uninit_isoc(dev);
577 /* Stop interrupt USB pipe */
578 tm6000_ir_int_stop(dev);
579
580 usb_set_interface(dev->udev,
581 dev->isoc_in.bInterfaceNumber,
582 dev->isoc_in.bAlternateSetting);
583
584 /* Start interrupt USB pipe */
585 tm6000_ir_int_start(dev);
586
587 pipe = usb_rcvisocpipe(dev->udev,
588 dev->isoc_in.endp->desc.bEndpointAddress &
589 USB_ENDPOINT_NUMBER_MASK);
590
591 size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
592
593 if (size > dev->isoc_in.maxsize)
594 size = dev->isoc_in.maxsize;
595
596 dev->isoc_ctl.max_pkt_size = size;
597
598 max_packets = TM6000_MAX_ISO_PACKETS;
599 sb_size = max_packets * size;
600 dev->urb_size = sb_size;
601
602 dev->isoc_ctl.num_bufs = num_bufs;
603
604 dev->isoc_ctl.urb = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
605 if (!dev->isoc_ctl.urb) {
606 tm6000_err("cannot alloc memory for usb buffers\n");
607 return -ENOMEM;
608 }
609
610 dev->isoc_ctl.transfer_buffer = kmalloc(sizeof(void *)*num_bufs,
611 GFP_KERNEL);
612 if (!dev->isoc_ctl.transfer_buffer) {
613 tm6000_err("cannot allocate memory for usbtransfer\n");
614 kfree(dev->isoc_ctl.urb);
615 return -ENOMEM;
616 }
617
618 dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets"
619 " (%d bytes) of %d bytes each to handle %u size\n",
620 max_packets, num_bufs, sb_size,
621 dev->isoc_in.maxsize, size);
622
623
624 if (tm6000_alloc_urb_buffers(dev) < 0) {
625 tm6000_err("cannot allocate memory for urb buffers\n");
626
627 /* call free, as some buffers might have been allocated */
628 tm6000_free_urb_buffers(dev);
629 kfree(dev->isoc_ctl.urb);
630 kfree(dev->isoc_ctl.transfer_buffer);
631 return -ENOMEM;
632 }
633
634 /* allocate urbs and transfer buffers */
635 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
636 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
637 if (!urb) {
638 tm6000_err("cannot alloc isoc_ctl.urb %i\n", i);
639 tm6000_uninit_isoc(dev);
640 usb_free_urb(urb);
641 return -ENOMEM;
642 }
643 dev->isoc_ctl.urb[i] = urb;
644
645 urb->transfer_dma = dev->urb_dma[i];
646 dev->isoc_ctl.transfer_buffer[i] = dev->urb_buffer[i];
647
648 usb_fill_bulk_urb(urb, dev->udev, pipe,
649 dev->isoc_ctl.transfer_buffer[i], sb_size,
650 tm6000_irq_callback, dma_q);
651 urb->interval = dev->isoc_in.endp->desc.bInterval;
652 urb->number_of_packets = max_packets;
653 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
654
655 for (j = 0; j < max_packets; j++) {
656 urb->iso_frame_desc[j].offset = size * j;
657 urb->iso_frame_desc[j].length = size;
658 }
659 }
660
661 return 0;
662 }
663
664 static int tm6000_start_thread(struct tm6000_core *dev)
665 {
666 struct tm6000_dmaqueue *dma_q = &dev->vidq;
667 int i;
668
669 dma_q->frame = 0;
670 dma_q->ini_jiffies = jiffies;
671
672 init_waitqueue_head(&dma_q->wq);
673
674 /* submit urbs and enables IRQ */
675 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
676 int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
677 if (rc) {
678 tm6000_err("submit of urb %i failed (error=%i)\n", i,
679 rc);
680 tm6000_uninit_isoc(dev);
681 return rc;
682 }
683 }
684
685 return 0;
686 }
687
688 /* ------------------------------------------------------------------
689 * Videobuf operations
690 * ------------------------------------------------------------------
691 */
692
693 static int
694 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
695 {
696 struct tm6000_fh *fh = vq->priv_data;
697
698 *size = fh->fmt->depth * fh->width * fh->height >> 3;
699 if (0 == *count)
700 *count = TM6000_DEF_BUF;
701
702 if (*count < TM6000_MIN_BUF)
703 *count = TM6000_MIN_BUF;
704
705 while (*size * *count > vid_limit * 1024 * 1024)
706 (*count)--;
707
708 return 0;
709 }
710
711 static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf)
712 {
713 struct tm6000_fh *fh = vq->priv_data;
714 struct tm6000_core *dev = fh->dev;
715 unsigned long flags;
716
717 BUG_ON(in_interrupt());
718
719 /* We used to wait for the buffer to finish here, but this didn't work
720 because, as we were keeping the state as VIDEOBUF_QUEUED,
721 videobuf_queue_cancel marked it as finished for us.
722 (Also, it could wedge forever if the hardware was misconfigured.)
723
724 This should be safe; by the time we get here, the buffer isn't
725 queued anymore. If we ever start marking the buffers as
726 VIDEOBUF_ACTIVE, it won't be, though.
727 */
728 spin_lock_irqsave(&dev->slock, flags);
729 if (dev->isoc_ctl.buf == buf)
730 dev->isoc_ctl.buf = NULL;
731 spin_unlock_irqrestore(&dev->slock, flags);
732
733 videobuf_vmalloc_free(&buf->vb);
734 buf->vb.state = VIDEOBUF_NEEDS_INIT;
735 }
736
737 static int
738 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
739 enum v4l2_field field)
740 {
741 struct tm6000_fh *fh = vq->priv_data;
742 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
743 struct tm6000_core *dev = fh->dev;
744 int rc = 0;
745
746 BUG_ON(NULL == fh->fmt);
747
748
749 /* FIXME: It assumes depth=2 */
750 /* The only currently supported format is 16 bits/pixel */
751 buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
752 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
753 return -EINVAL;
754
755 if (buf->fmt != fh->fmt ||
756 buf->vb.width != fh->width ||
757 buf->vb.height != fh->height ||
758 buf->vb.field != field) {
759 buf->fmt = fh->fmt;
760 buf->vb.width = fh->width;
761 buf->vb.height = fh->height;
762 buf->vb.field = field;
763 buf->vb.state = VIDEOBUF_NEEDS_INIT;
764 }
765
766 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
767 rc = videobuf_iolock(vq, &buf->vb, NULL);
768 if (rc != 0)
769 goto fail;
770 }
771
772 if (!dev->isoc_ctl.num_bufs) {
773 rc = tm6000_prepare_isoc(dev);
774 if (rc < 0)
775 goto fail;
776
777 rc = tm6000_start_thread(dev);
778 if (rc < 0)
779 goto fail;
780
781 }
782
783 buf->vb.state = VIDEOBUF_PREPARED;
784 return 0;
785
786 fail:
787 free_buffer(vq, buf);
788 return rc;
789 }
790
791 static void
792 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
793 {
794 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
795 struct tm6000_fh *fh = vq->priv_data;
796 struct tm6000_core *dev = fh->dev;
797 struct tm6000_dmaqueue *vidq = &dev->vidq;
798
799 buf->vb.state = VIDEOBUF_QUEUED;
800 list_add_tail(&buf->vb.queue, &vidq->active);
801 }
802
803 static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
804 {
805 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
806
807 free_buffer(vq, buf);
808 }
809
810 static struct videobuf_queue_ops tm6000_video_qops = {
811 .buf_setup = buffer_setup,
812 .buf_prepare = buffer_prepare,
813 .buf_queue = buffer_queue,
814 .buf_release = buffer_release,
815 };
816
817 /* ------------------------------------------------------------------
818 * IOCTL handling
819 * ------------------------------------------------------------------
820 */
821
822 static bool is_res_read(struct tm6000_core *dev, struct tm6000_fh *fh)
823 {
824 /* Is the current fh handling it? if so, that's OK */
825 if (dev->resources == fh && dev->is_res_read)
826 return true;
827
828 return false;
829 }
830
831 static bool is_res_streaming(struct tm6000_core *dev, struct tm6000_fh *fh)
832 {
833 /* Is the current fh handling it? if so, that's OK */
834 if (dev->resources == fh)
835 return true;
836
837 return false;
838 }
839
840 static bool res_get(struct tm6000_core *dev, struct tm6000_fh *fh,
841 bool is_res_read)
842 {
843 /* Is the current fh handling it? if so, that's OK */
844 if (dev->resources == fh && dev->is_res_read == is_res_read)
845 return true;
846
847 /* is it free? */
848 if (dev->resources)
849 return false;
850
851 /* grab it */
852 dev->resources = fh;
853 dev->is_res_read = is_res_read;
854 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
855 return true;
856 }
857
858 static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
859 {
860 /* Is the current fh handling it? if so, that's OK */
861 if (dev->resources != fh)
862 return;
863
864 dev->resources = NULL;
865 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
866 }
867
868 /* ------------------------------------------------------------------
869 * IOCTL vidioc handling
870 * ------------------------------------------------------------------
871 */
872 static int vidioc_querycap(struct file *file, void *priv,
873 struct v4l2_capability *cap)
874 {
875 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
876 struct video_device *vdev = video_devdata(file);
877
878 strlcpy(cap->driver, "tm6000", sizeof(cap->driver));
879 strlcpy(cap->card, "Trident TVMaster TM5600/6000/6010", sizeof(cap->card));
880 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
881 if (dev->tuner_type != TUNER_ABSENT)
882 cap->device_caps |= V4L2_CAP_TUNER;
883 if (vdev->vfl_type == VFL_TYPE_GRABBER)
884 cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE |
885 V4L2_CAP_STREAMING |
886 V4L2_CAP_READWRITE;
887 else
888 cap->device_caps |= V4L2_CAP_RADIO;
889 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
890 V4L2_CAP_RADIO | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
891
892 return 0;
893 }
894
895 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
896 struct v4l2_fmtdesc *f)
897 {
898 if (f->index >= ARRAY_SIZE(format))
899 return -EINVAL;
900
901 strlcpy(f->description, format[f->index].name, sizeof(f->description));
902 f->pixelformat = format[f->index].fourcc;
903 return 0;
904 }
905
906 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
907 struct v4l2_format *f)
908 {
909 struct tm6000_fh *fh = priv;
910
911 f->fmt.pix.width = fh->width;
912 f->fmt.pix.height = fh->height;
913 f->fmt.pix.field = fh->vb_vidq.field;
914 f->fmt.pix.pixelformat = fh->fmt->fourcc;
915 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
916 f->fmt.pix.bytesperline =
917 (f->fmt.pix.width * fh->fmt->depth) >> 3;
918 f->fmt.pix.sizeimage =
919 f->fmt.pix.height * f->fmt.pix.bytesperline;
920
921 return 0;
922 }
923
924 static struct tm6000_fmt *format_by_fourcc(unsigned int fourcc)
925 {
926 unsigned int i;
927
928 for (i = 0; i < ARRAY_SIZE(format); i++)
929 if (format[i].fourcc == fourcc)
930 return format+i;
931 return NULL;
932 }
933
934 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
935 struct v4l2_format *f)
936 {
937 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
938 struct tm6000_fmt *fmt;
939 enum v4l2_field field;
940
941 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
942 if (NULL == fmt) {
943 dprintk(dev, 2, "Fourcc format (0x%08x)"
944 " invalid.\n", f->fmt.pix.pixelformat);
945 return -EINVAL;
946 }
947
948 field = f->fmt.pix.field;
949
950 field = V4L2_FIELD_INTERLACED;
951
952 tm6000_get_std_res(dev);
953
954 f->fmt.pix.width = dev->width;
955 f->fmt.pix.height = dev->height;
956
957 f->fmt.pix.width &= ~0x01;
958
959 f->fmt.pix.field = field;
960
961 f->fmt.pix.bytesperline =
962 (f->fmt.pix.width * fmt->depth) >> 3;
963 f->fmt.pix.sizeimage =
964 f->fmt.pix.height * f->fmt.pix.bytesperline;
965 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
966
967 return 0;
968 }
969
970 /*FIXME: This seems to be generic enough to be at videodev2 */
971 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
972 struct v4l2_format *f)
973 {
974 struct tm6000_fh *fh = priv;
975 struct tm6000_core *dev = fh->dev;
976 int ret = vidioc_try_fmt_vid_cap(file, fh, f);
977 if (ret < 0)
978 return ret;
979
980 fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
981 fh->width = f->fmt.pix.width;
982 fh->height = f->fmt.pix.height;
983 fh->vb_vidq.field = f->fmt.pix.field;
984 fh->type = f->type;
985
986 dev->fourcc = f->fmt.pix.pixelformat;
987
988 tm6000_set_fourcc_format(dev);
989
990 return 0;
991 }
992
993 static int vidioc_reqbufs(struct file *file, void *priv,
994 struct v4l2_requestbuffers *p)
995 {
996 struct tm6000_fh *fh = priv;
997
998 return videobuf_reqbufs(&fh->vb_vidq, p);
999 }
1000
1001 static int vidioc_querybuf(struct file *file, void *priv,
1002 struct v4l2_buffer *p)
1003 {
1004 struct tm6000_fh *fh = priv;
1005
1006 return videobuf_querybuf(&fh->vb_vidq, p);
1007 }
1008
1009 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1010 {
1011 struct tm6000_fh *fh = priv;
1012
1013 return videobuf_qbuf(&fh->vb_vidq, p);
1014 }
1015
1016 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1017 {
1018 struct tm6000_fh *fh = priv;
1019
1020 return videobuf_dqbuf(&fh->vb_vidq, p,
1021 file->f_flags & O_NONBLOCK);
1022 }
1023
1024 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
1025 {
1026 struct tm6000_fh *fh = priv;
1027 struct tm6000_core *dev = fh->dev;
1028
1029 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1030 return -EINVAL;
1031 if (i != fh->type)
1032 return -EINVAL;
1033
1034 if (!res_get(dev, fh, false))
1035 return -EBUSY;
1036 return videobuf_streamon(&fh->vb_vidq);
1037 }
1038
1039 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
1040 {
1041 struct tm6000_fh *fh = priv;
1042 struct tm6000_core *dev = fh->dev;
1043
1044 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1045 return -EINVAL;
1046
1047 if (i != fh->type)
1048 return -EINVAL;
1049
1050 videobuf_streamoff(&fh->vb_vidq);
1051 res_free(dev, fh);
1052
1053 return 0;
1054 }
1055
1056 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1057 {
1058 int rc = 0;
1059 struct tm6000_fh *fh = priv;
1060 struct tm6000_core *dev = fh->dev;
1061
1062 dev->norm = norm;
1063 rc = tm6000_init_analog_mode(dev);
1064
1065 fh->width = dev->width;
1066 fh->height = dev->height;
1067
1068 if (rc < 0)
1069 return rc;
1070
1071 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->norm);
1072
1073 return 0;
1074 }
1075
1076 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1077 {
1078 struct tm6000_fh *fh = priv;
1079 struct tm6000_core *dev = fh->dev;
1080
1081 *norm = dev->norm;
1082 return 0;
1083 }
1084
1085 static const char *iname[] = {
1086 [TM6000_INPUT_TV] = "Television",
1087 [TM6000_INPUT_COMPOSITE1] = "Composite 1",
1088 [TM6000_INPUT_COMPOSITE2] = "Composite 2",
1089 [TM6000_INPUT_SVIDEO] = "S-Video",
1090 };
1091
1092 static int vidioc_enum_input(struct file *file, void *priv,
1093 struct v4l2_input *i)
1094 {
1095 struct tm6000_fh *fh = priv;
1096 struct tm6000_core *dev = fh->dev;
1097 unsigned int n;
1098
1099 n = i->index;
1100 if (n >= 3)
1101 return -EINVAL;
1102
1103 if (!dev->vinput[n].type)
1104 return -EINVAL;
1105
1106 i->index = n;
1107
1108 if (dev->vinput[n].type == TM6000_INPUT_TV)
1109 i->type = V4L2_INPUT_TYPE_TUNER;
1110 else
1111 i->type = V4L2_INPUT_TYPE_CAMERA;
1112
1113 strcpy(i->name, iname[dev->vinput[n].type]);
1114
1115 i->std = TM6000_STD;
1116
1117 return 0;
1118 }
1119
1120 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1121 {
1122 struct tm6000_fh *fh = priv;
1123 struct tm6000_core *dev = fh->dev;
1124
1125 *i = dev->input;
1126
1127 return 0;
1128 }
1129
1130 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1131 {
1132 struct tm6000_fh *fh = priv;
1133 struct tm6000_core *dev = fh->dev;
1134 int rc = 0;
1135
1136 if (i >= 3)
1137 return -EINVAL;
1138 if (!dev->vinput[i].type)
1139 return -EINVAL;
1140
1141 dev->input = i;
1142
1143 rc = vidioc_s_std(file, priv, dev->norm);
1144
1145 return rc;
1146 }
1147
1148 /* --- controls ---------------------------------------------- */
1149
1150 static int tm6000_s_ctrl(struct v4l2_ctrl *ctrl)
1151 {
1152 struct tm6000_core *dev = container_of(ctrl->handler, struct tm6000_core, ctrl_handler);
1153 u8 val = ctrl->val;
1154
1155 switch (ctrl->id) {
1156 case V4L2_CID_CONTRAST:
1157 tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val);
1158 return 0;
1159 case V4L2_CID_BRIGHTNESS:
1160 tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val);
1161 return 0;
1162 case V4L2_CID_SATURATION:
1163 tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val);
1164 return 0;
1165 case V4L2_CID_HUE:
1166 tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val);
1167 return 0;
1168 }
1169 return -EINVAL;
1170 }
1171
1172 static const struct v4l2_ctrl_ops tm6000_ctrl_ops = {
1173 .s_ctrl = tm6000_s_ctrl,
1174 };
1175
1176 static int tm6000_radio_s_ctrl(struct v4l2_ctrl *ctrl)
1177 {
1178 struct tm6000_core *dev = container_of(ctrl->handler,
1179 struct tm6000_core, radio_ctrl_handler);
1180 u8 val = ctrl->val;
1181
1182 switch (ctrl->id) {
1183 case V4L2_CID_AUDIO_MUTE:
1184 dev->ctl_mute = val;
1185 tm6000_tvaudio_set_mute(dev, val);
1186 return 0;
1187 case V4L2_CID_AUDIO_VOLUME:
1188 dev->ctl_volume = val;
1189 tm6000_set_volume(dev, val);
1190 return 0;
1191 }
1192 return -EINVAL;
1193 }
1194
1195 static const struct v4l2_ctrl_ops tm6000_radio_ctrl_ops = {
1196 .s_ctrl = tm6000_radio_s_ctrl,
1197 };
1198
1199 static int vidioc_g_tuner(struct file *file, void *priv,
1200 struct v4l2_tuner *t)
1201 {
1202 struct tm6000_fh *fh = priv;
1203 struct tm6000_core *dev = fh->dev;
1204
1205 if (UNSET == dev->tuner_type)
1206 return -ENOTTY;
1207 if (0 != t->index)
1208 return -EINVAL;
1209
1210 strcpy(t->name, "Television");
1211 t->type = V4L2_TUNER_ANALOG_TV;
1212 t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO;
1213 t->rangehigh = 0xffffffffUL;
1214 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1215
1216 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1217
1218 t->audmode = dev->amode;
1219
1220 return 0;
1221 }
1222
1223 static int vidioc_s_tuner(struct file *file, void *priv,
1224 const struct v4l2_tuner *t)
1225 {
1226 struct tm6000_fh *fh = priv;
1227 struct tm6000_core *dev = fh->dev;
1228
1229 if (UNSET == dev->tuner_type)
1230 return -ENOTTY;
1231 if (0 != t->index)
1232 return -EINVAL;
1233
1234 if (t->audmode > V4L2_TUNER_MODE_STEREO)
1235 dev->amode = V4L2_TUNER_MODE_STEREO;
1236 else
1237 dev->amode = t->audmode;
1238 dprintk(dev, 3, "audio mode: %x\n", t->audmode);
1239
1240 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1241
1242 return 0;
1243 }
1244
1245 static int vidioc_g_frequency(struct file *file, void *priv,
1246 struct v4l2_frequency *f)
1247 {
1248 struct tm6000_fh *fh = priv;
1249 struct tm6000_core *dev = fh->dev;
1250
1251 if (UNSET == dev->tuner_type)
1252 return -ENOTTY;
1253 if (f->tuner)
1254 return -EINVAL;
1255
1256 f->frequency = dev->freq;
1257
1258 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
1259
1260 return 0;
1261 }
1262
1263 static int vidioc_s_frequency(struct file *file, void *priv,
1264 const struct v4l2_frequency *f)
1265 {
1266 struct tm6000_fh *fh = priv;
1267 struct tm6000_core *dev = fh->dev;
1268
1269 if (UNSET == dev->tuner_type)
1270 return -ENOTTY;
1271 if (f->tuner != 0)
1272 return -EINVAL;
1273
1274 dev->freq = f->frequency;
1275 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1276
1277 return 0;
1278 }
1279
1280 static int radio_g_tuner(struct file *file, void *priv,
1281 struct v4l2_tuner *t)
1282 {
1283 struct tm6000_fh *fh = file->private_data;
1284 struct tm6000_core *dev = fh->dev;
1285
1286 if (0 != t->index)
1287 return -EINVAL;
1288
1289 memset(t, 0, sizeof(*t));
1290 strcpy(t->name, "Radio");
1291 t->type = V4L2_TUNER_RADIO;
1292 t->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
1293 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1294 t->audmode = V4L2_TUNER_MODE_STEREO;
1295
1296 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1297
1298 return 0;
1299 }
1300
1301 static int radio_s_tuner(struct file *file, void *priv,
1302 const struct v4l2_tuner *t)
1303 {
1304 struct tm6000_fh *fh = file->private_data;
1305 struct tm6000_core *dev = fh->dev;
1306
1307 if (0 != t->index)
1308 return -EINVAL;
1309 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1310 return 0;
1311 }
1312
1313 /* ------------------------------------------------------------------
1314 File operations for the device
1315 ------------------------------------------------------------------*/
1316
1317 static int __tm6000_open(struct file *file)
1318 {
1319 struct video_device *vdev = video_devdata(file);
1320 struct tm6000_core *dev = video_drvdata(file);
1321 struct tm6000_fh *fh;
1322 enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1323 int rc;
1324 int radio = 0;
1325
1326 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
1327 video_device_node_name(vdev));
1328
1329 switch (vdev->vfl_type) {
1330 case VFL_TYPE_GRABBER:
1331 type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1332 break;
1333 case VFL_TYPE_VBI:
1334 type = V4L2_BUF_TYPE_VBI_CAPTURE;
1335 break;
1336 case VFL_TYPE_RADIO:
1337 radio = 1;
1338 break;
1339 }
1340
1341 /* If more than one user, mutex should be added */
1342 dev->users++;
1343
1344 dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
1345 video_device_node_name(vdev), v4l2_type_names[type],
1346 dev->users);
1347
1348 /* allocate + initialize per filehandle data */
1349 fh = kzalloc(sizeof(*fh), GFP_KERNEL);
1350 if (NULL == fh) {
1351 dev->users--;
1352 return -ENOMEM;
1353 }
1354
1355 v4l2_fh_init(&fh->fh, vdev);
1356 file->private_data = fh;
1357 fh->dev = dev;
1358 fh->radio = radio;
1359 dev->radio = radio;
1360 fh->type = type;
1361 dev->fourcc = format[0].fourcc;
1362
1363 fh->fmt = format_by_fourcc(dev->fourcc);
1364
1365 tm6000_get_std_res(dev);
1366
1367 fh->width = dev->width;
1368 fh->height = dev->height;
1369
1370 dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=0x%08lx, dev=0x%08lx, "
1371 "dev->vidq=0x%08lx\n",
1372 (unsigned long)fh, (unsigned long)dev,
1373 (unsigned long)&dev->vidq);
1374 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1375 "queued=%d\n", list_empty(&dev->vidq.queued));
1376 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1377 "active=%d\n", list_empty(&dev->vidq.active));
1378
1379 /* initialize hardware on analog mode */
1380 rc = tm6000_init_analog_mode(dev);
1381 if (rc < 0)
1382 return rc;
1383
1384 dev->mode = TM6000_MODE_ANALOG;
1385
1386 if (!fh->radio) {
1387 videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
1388 NULL, &dev->slock,
1389 fh->type,
1390 V4L2_FIELD_INTERLACED,
1391 sizeof(struct tm6000_buffer), fh, &dev->lock);
1392 } else {
1393 dprintk(dev, V4L2_DEBUG_OPEN, "video_open: setting radio device\n");
1394 tm6000_set_audio_rinput(dev);
1395 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1396 tm6000_prepare_isoc(dev);
1397 tm6000_start_thread(dev);
1398 }
1399 v4l2_fh_add(&fh->fh);
1400
1401 return 0;
1402 }
1403
1404 static int tm6000_open(struct file *file)
1405 {
1406 struct video_device *vdev = video_devdata(file);
1407 int res;
1408
1409 mutex_lock(vdev->lock);
1410 res = __tm6000_open(file);
1411 mutex_unlock(vdev->lock);
1412 return res;
1413 }
1414
1415 static ssize_t
1416 tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
1417 {
1418 struct tm6000_fh *fh = file->private_data;
1419 struct tm6000_core *dev = fh->dev;
1420
1421 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1422 int res;
1423
1424 if (!res_get(fh->dev, fh, true))
1425 return -EBUSY;
1426
1427 if (mutex_lock_interruptible(&dev->lock))
1428 return -ERESTARTSYS;
1429 res = videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
1430 file->f_flags & O_NONBLOCK);
1431 mutex_unlock(&dev->lock);
1432 return res;
1433 }
1434 return 0;
1435 }
1436
1437 static unsigned int
1438 __tm6000_poll(struct file *file, struct poll_table_struct *wait)
1439 {
1440 unsigned long req_events = poll_requested_events(wait);
1441 struct tm6000_fh *fh = file->private_data;
1442 struct tm6000_buffer *buf;
1443 int res = 0;
1444
1445 if (v4l2_event_pending(&fh->fh))
1446 res = POLLPRI;
1447 else if (req_events & POLLPRI)
1448 poll_wait(file, &fh->fh.wait, wait);
1449 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1450 return res | POLLERR;
1451
1452 if (!!is_res_streaming(fh->dev, fh))
1453 return res | POLLERR;
1454
1455 if (!is_res_read(fh->dev, fh)) {
1456 /* streaming capture */
1457 if (list_empty(&fh->vb_vidq.stream))
1458 return res | POLLERR;
1459 buf = list_entry(fh->vb_vidq.stream.next, struct tm6000_buffer, vb.stream);
1460 poll_wait(file, &buf->vb.done, wait);
1461 if (buf->vb.state == VIDEOBUF_DONE ||
1462 buf->vb.state == VIDEOBUF_ERROR)
1463 return res | POLLIN | POLLRDNORM;
1464 } else if (req_events & (POLLIN | POLLRDNORM)) {
1465 /* read() capture */
1466 return res | videobuf_poll_stream(file, &fh->vb_vidq, wait);
1467 }
1468 return res;
1469 }
1470
1471 static unsigned int tm6000_poll(struct file *file, struct poll_table_struct *wait)
1472 {
1473 struct tm6000_fh *fh = file->private_data;
1474 struct tm6000_core *dev = fh->dev;
1475 unsigned int res;
1476
1477 mutex_lock(&dev->lock);
1478 res = __tm6000_poll(file, wait);
1479 mutex_unlock(&dev->lock);
1480 return res;
1481 }
1482
1483 static int tm6000_release(struct file *file)
1484 {
1485 struct tm6000_fh *fh = file->private_data;
1486 struct tm6000_core *dev = fh->dev;
1487 struct video_device *vdev = video_devdata(file);
1488
1489 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
1490 video_device_node_name(vdev), dev->users);
1491
1492 mutex_lock(&dev->lock);
1493 dev->users--;
1494
1495 res_free(dev, fh);
1496
1497 if (!dev->users) {
1498 tm6000_uninit_isoc(dev);
1499
1500 /* Stop interrupt USB pipe */
1501 tm6000_ir_int_stop(dev);
1502
1503 usb_reset_configuration(dev->udev);
1504
1505 if (dev->int_in.endp)
1506 usb_set_interface(dev->udev,
1507 dev->isoc_in.bInterfaceNumber, 2);
1508 else
1509 usb_set_interface(dev->udev,
1510 dev->isoc_in.bInterfaceNumber, 0);
1511
1512 /* Start interrupt USB pipe */
1513 tm6000_ir_int_start(dev);
1514
1515 if (!fh->radio)
1516 videobuf_mmap_free(&fh->vb_vidq);
1517 }
1518 v4l2_fh_del(&fh->fh);
1519 v4l2_fh_exit(&fh->fh);
1520 kfree(fh);
1521 mutex_unlock(&dev->lock);
1522
1523 return 0;
1524 }
1525
1526 static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
1527 {
1528 struct tm6000_fh *fh = file->private_data;
1529 struct tm6000_core *dev = fh->dev;
1530 int res;
1531
1532 if (mutex_lock_interruptible(&dev->lock))
1533 return -ERESTARTSYS;
1534 res = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1535 mutex_unlock(&dev->lock);
1536 return res;
1537 }
1538
1539 static struct v4l2_file_operations tm6000_fops = {
1540 .owner = THIS_MODULE,
1541 .open = tm6000_open,
1542 .release = tm6000_release,
1543 .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
1544 .read = tm6000_read,
1545 .poll = tm6000_poll,
1546 .mmap = tm6000_mmap,
1547 };
1548
1549 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1550 .vidioc_querycap = vidioc_querycap,
1551 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1552 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1553 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1554 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1555 .vidioc_s_std = vidioc_s_std,
1556 .vidioc_g_std = vidioc_g_std,
1557 .vidioc_enum_input = vidioc_enum_input,
1558 .vidioc_g_input = vidioc_g_input,
1559 .vidioc_s_input = vidioc_s_input,
1560 .vidioc_g_tuner = vidioc_g_tuner,
1561 .vidioc_s_tuner = vidioc_s_tuner,
1562 .vidioc_g_frequency = vidioc_g_frequency,
1563 .vidioc_s_frequency = vidioc_s_frequency,
1564 .vidioc_streamon = vidioc_streamon,
1565 .vidioc_streamoff = vidioc_streamoff,
1566 .vidioc_reqbufs = vidioc_reqbufs,
1567 .vidioc_querybuf = vidioc_querybuf,
1568 .vidioc_qbuf = vidioc_qbuf,
1569 .vidioc_dqbuf = vidioc_dqbuf,
1570 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1571 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1572 };
1573
1574 static struct video_device tm6000_template = {
1575 .name = "tm6000",
1576 .fops = &tm6000_fops,
1577 .ioctl_ops = &video_ioctl_ops,
1578 .release = video_device_release_empty,
1579 .tvnorms = TM6000_STD,
1580 };
1581
1582 static const struct v4l2_file_operations radio_fops = {
1583 .owner = THIS_MODULE,
1584 .open = tm6000_open,
1585 .poll = v4l2_ctrl_poll,
1586 .release = tm6000_release,
1587 .unlocked_ioctl = video_ioctl2,
1588 };
1589
1590 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1591 .vidioc_querycap = vidioc_querycap,
1592 .vidioc_g_tuner = radio_g_tuner,
1593 .vidioc_s_tuner = radio_s_tuner,
1594 .vidioc_g_frequency = vidioc_g_frequency,
1595 .vidioc_s_frequency = vidioc_s_frequency,
1596 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1597 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1598 };
1599
1600 static struct video_device tm6000_radio_template = {
1601 .name = "tm6000",
1602 .fops = &radio_fops,
1603 .ioctl_ops = &radio_ioctl_ops,
1604 };
1605
1606 /* -----------------------------------------------------------------
1607 * Initialization and module stuff
1608 * ------------------------------------------------------------------
1609 */
1610
1611 static void vdev_init(struct tm6000_core *dev,
1612 struct video_device *vfd,
1613 const struct video_device
1614 *template, const char *type_name)
1615 {
1616 *vfd = *template;
1617 vfd->v4l2_dev = &dev->v4l2_dev;
1618 vfd->release = video_device_release_empty;
1619 vfd->lock = &dev->lock;
1620
1621 snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
1622
1623 video_set_drvdata(vfd, dev);
1624 }
1625
1626 int tm6000_v4l2_register(struct tm6000_core *dev)
1627 {
1628 int ret = 0;
1629
1630 v4l2_ctrl_handler_init(&dev->ctrl_handler, 6);
1631 v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 2);
1632 v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
1633 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
1634 v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
1635 V4L2_CID_AUDIO_VOLUME, -15, 15, 1, 0);
1636 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1637 V4L2_CID_BRIGHTNESS, 0, 255, 1, 54);
1638 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1639 V4L2_CID_CONTRAST, 0, 255, 1, 119);
1640 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1641 V4L2_CID_SATURATION, 0, 255, 1, 112);
1642 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1643 V4L2_CID_HUE, -128, 127, 1, 0);
1644 v4l2_ctrl_add_handler(&dev->ctrl_handler,
1645 &dev->radio_ctrl_handler, NULL);
1646
1647 if (dev->radio_ctrl_handler.error)
1648 ret = dev->radio_ctrl_handler.error;
1649 if (!ret && dev->ctrl_handler.error)
1650 ret = dev->ctrl_handler.error;
1651 if (ret)
1652 goto free_ctrl;
1653
1654 vdev_init(dev, &dev->vfd, &tm6000_template, "video");
1655
1656 dev->vfd.ctrl_handler = &dev->ctrl_handler;
1657
1658 /* init video dma queues */
1659 INIT_LIST_HEAD(&dev->vidq.active);
1660 INIT_LIST_HEAD(&dev->vidq.queued);
1661
1662 ret = video_register_device(&dev->vfd, VFL_TYPE_GRABBER, video_nr);
1663
1664 if (ret < 0) {
1665 printk(KERN_INFO "%s: can't register video device\n",
1666 dev->name);
1667 goto free_ctrl;
1668 }
1669
1670 printk(KERN_INFO "%s: registered device %s\n",
1671 dev->name, video_device_node_name(&dev->vfd));
1672
1673 if (dev->caps.has_radio) {
1674 vdev_init(dev, &dev->radio_dev, &tm6000_radio_template,
1675 "radio");
1676 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
1677 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
1678 radio_nr);
1679 if (ret < 0) {
1680 printk(KERN_INFO "%s: can't register radio device\n",
1681 dev->name);
1682 goto unreg_video;
1683 }
1684
1685 printk(KERN_INFO "%s: registered device %s\n",
1686 dev->name, video_device_node_name(&dev->radio_dev));
1687 }
1688
1689 printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
1690 return ret;
1691
1692 unreg_video:
1693 video_unregister_device(&dev->vfd);
1694 free_ctrl:
1695 v4l2_ctrl_handler_free(&dev->ctrl_handler);
1696 v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1697 return ret;
1698 }
1699
1700 int tm6000_v4l2_unregister(struct tm6000_core *dev)
1701 {
1702 video_unregister_device(&dev->vfd);
1703
1704 /* if URB buffers are still allocated free them now */
1705 tm6000_free_urb_buffers(dev);
1706
1707 video_unregister_device(&dev->radio_dev);
1708 return 0;
1709 }
1710
1711 int tm6000_v4l2_exit(void)
1712 {
1713 return 0;
1714 }
1715
1716 module_param(video_nr, int, 0);
1717 MODULE_PARM_DESC(video_nr, "Allow changing video device number");
1718
1719 module_param_named(debug, tm6000_debug, int, 0444);
1720 MODULE_PARM_DESC(debug, "activates debug info");
1721
1722 module_param(vid_limit, int, 0644);
1723 MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
1724
1725 module_param(keep_urb, bool, 0);
1726 MODULE_PARM_DESC(keep_urb, "Keep urb buffers allocated even when the device is closed by the user");
Linux kernel - Deliverables
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