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 */
get_next_buf(struct tm6000_dmaqueue * dma_q,struct tm6000_buffer ** buf)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 */
buffer_filled(struct tm6000_core * dev,struct tm6000_dmaqueue * dma_q,struct tm6000_buffer * buf)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 */
copy_streams(u8 * data,unsigned long len,struct urb * urb)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 */
copy_multiplexed(u8 * ptr,unsigned long len,struct urb * urb)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
print_err_status(struct tm6000_core * dev,int packet,int status)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 */
tm6000_isoc_copy(struct urb * urb)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 */
tm6000_irq_callback(struct urb * urb)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 */
tm6000_alloc_urb_buffers(struct tm6000_core * dev)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 */
tm6000_free_urb_buffers(struct tm6000_core * dev)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 */
tm6000_uninit_isoc(struct tm6000_core * dev)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 */
tm6000_prepare_isoc(struct tm6000_core * dev)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 (!dev->urb_buffer && 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
tm6000_start_thread(struct tm6000_core * dev)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
buffer_setup(struct videobuf_queue * vq,unsigned int * count,unsigned int * size)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
free_buffer(struct videobuf_queue * vq,struct tm6000_buffer * buf)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 if (in_interrupt())
718 BUG();
719
720 /* We used to wait for the buffer to finish here, but this didn't work
721 because, as we were keeping the state as VIDEOBUF_QUEUED,
722 videobuf_queue_cancel marked it as finished for us.
723 (Also, it could wedge forever if the hardware was misconfigured.)
724
725 This should be safe; by the time we get here, the buffer isn't
726 queued anymore. If we ever start marking the buffers as
727 VIDEOBUF_ACTIVE, it won't be, though.
728 */
729 spin_lock_irqsave(&dev->slock, flags);
730 if (dev->isoc_ctl.buf == buf)
731 dev->isoc_ctl.buf = NULL;
732 spin_unlock_irqrestore(&dev->slock, flags);
733
734 videobuf_vmalloc_free(&buf->vb);
735 buf->vb.state = VIDEOBUF_NEEDS_INIT;
736 }
737
738 static int
buffer_prepare(struct videobuf_queue * vq,struct videobuf_buffer * vb,enum v4l2_field field)739 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
740 enum v4l2_field field)
741 {
742 struct tm6000_fh *fh = vq->priv_data;
743 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
744 struct tm6000_core *dev = fh->dev;
745 int rc = 0;
746
747 BUG_ON(NULL == fh->fmt);
748
749
750 /* FIXME: It assumes depth=2 */
751 /* The only currently supported format is 16 bits/pixel */
752 buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
753 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
754 return -EINVAL;
755
756 if (buf->fmt != fh->fmt ||
757 buf->vb.width != fh->width ||
758 buf->vb.height != fh->height ||
759 buf->vb.field != field) {
760 buf->fmt = fh->fmt;
761 buf->vb.width = fh->width;
762 buf->vb.height = fh->height;
763 buf->vb.field = field;
764 buf->vb.state = VIDEOBUF_NEEDS_INIT;
765 }
766
767 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
768 rc = videobuf_iolock(vq, &buf->vb, NULL);
769 if (rc != 0)
770 goto fail;
771 }
772
773 if (!dev->isoc_ctl.num_bufs) {
774 rc = tm6000_prepare_isoc(dev);
775 if (rc < 0)
776 goto fail;
777
778 rc = tm6000_start_thread(dev);
779 if (rc < 0)
780 goto fail;
781
782 }
783
784 buf->vb.state = VIDEOBUF_PREPARED;
785 return 0;
786
787 fail:
788 free_buffer(vq, buf);
789 return rc;
790 }
791
792 static void
buffer_queue(struct videobuf_queue * vq,struct videobuf_buffer * vb)793 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
794 {
795 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
796 struct tm6000_fh *fh = vq->priv_data;
797 struct tm6000_core *dev = fh->dev;
798 struct tm6000_dmaqueue *vidq = &dev->vidq;
799
800 buf->vb.state = VIDEOBUF_QUEUED;
801 list_add_tail(&buf->vb.queue, &vidq->active);
802 }
803
buffer_release(struct videobuf_queue * vq,struct videobuf_buffer * vb)804 static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
805 {
806 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
807
808 free_buffer(vq, buf);
809 }
810
811 static struct videobuf_queue_ops tm6000_video_qops = {
812 .buf_setup = buffer_setup,
813 .buf_prepare = buffer_prepare,
814 .buf_queue = buffer_queue,
815 .buf_release = buffer_release,
816 };
817
818 /* ------------------------------------------------------------------
819 * IOCTL handling
820 * ------------------------------------------------------------------
821 */
822
is_res_read(struct tm6000_core * dev,struct tm6000_fh * fh)823 static bool is_res_read(struct tm6000_core *dev, struct tm6000_fh *fh)
824 {
825 /* Is the current fh handling it? if so, that's OK */
826 if (dev->resources == fh && dev->is_res_read)
827 return true;
828
829 return false;
830 }
831
is_res_streaming(struct tm6000_core * dev,struct tm6000_fh * fh)832 static bool is_res_streaming(struct tm6000_core *dev, struct tm6000_fh *fh)
833 {
834 /* Is the current fh handling it? if so, that's OK */
835 if (dev->resources == fh)
836 return true;
837
838 return false;
839 }
840
res_get(struct tm6000_core * dev,struct tm6000_fh * fh,bool is_res_read)841 static bool res_get(struct tm6000_core *dev, struct tm6000_fh *fh,
842 bool is_res_read)
843 {
844 /* Is the current fh handling it? if so, that's OK */
845 if (dev->resources == fh && dev->is_res_read == is_res_read)
846 return true;
847
848 /* is it free? */
849 if (dev->resources)
850 return false;
851
852 /* grab it */
853 dev->resources = fh;
854 dev->is_res_read = is_res_read;
855 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
856 return true;
857 }
858
res_free(struct tm6000_core * dev,struct tm6000_fh * fh)859 static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
860 {
861 /* Is the current fh handling it? if so, that's OK */
862 if (dev->resources != fh)
863 return;
864
865 dev->resources = NULL;
866 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
867 }
868
869 /* ------------------------------------------------------------------
870 * IOCTL vidioc handling
871 * ------------------------------------------------------------------
872 */
vidioc_querycap(struct file * file,void * priv,struct v4l2_capability * cap)873 static int vidioc_querycap(struct file *file, void *priv,
874 struct v4l2_capability *cap)
875 {
876 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
877 struct video_device *vdev = video_devdata(file);
878
879 strlcpy(cap->driver, "tm6000", sizeof(cap->driver));
880 strlcpy(cap->card, "Trident TVMaster TM5600/6000/6010", sizeof(cap->card));
881 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
882 if (dev->tuner_type != TUNER_ABSENT)
883 cap->device_caps |= V4L2_CAP_TUNER;
884 if (vdev->vfl_type == VFL_TYPE_GRABBER)
885 cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE |
886 V4L2_CAP_STREAMING |
887 V4L2_CAP_READWRITE;
888 else
889 cap->device_caps |= V4L2_CAP_RADIO;
890 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
891 V4L2_CAP_RADIO | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
892
893 return 0;
894 }
895
vidioc_enum_fmt_vid_cap(struct file * file,void * priv,struct v4l2_fmtdesc * f)896 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
897 struct v4l2_fmtdesc *f)
898 {
899 if (f->index >= ARRAY_SIZE(format))
900 return -EINVAL;
901
902 strlcpy(f->description, format[f->index].name, sizeof(f->description));
903 f->pixelformat = format[f->index].fourcc;
904 return 0;
905 }
906
vidioc_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)907 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
908 struct v4l2_format *f)
909 {
910 struct tm6000_fh *fh = priv;
911
912 f->fmt.pix.width = fh->width;
913 f->fmt.pix.height = fh->height;
914 f->fmt.pix.field = fh->vb_vidq.field;
915 f->fmt.pix.pixelformat = fh->fmt->fourcc;
916 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
917 f->fmt.pix.bytesperline =
918 (f->fmt.pix.width * fh->fmt->depth) >> 3;
919 f->fmt.pix.sizeimage =
920 f->fmt.pix.height * f->fmt.pix.bytesperline;
921
922 return 0;
923 }
924
format_by_fourcc(unsigned int fourcc)925 static struct tm6000_fmt *format_by_fourcc(unsigned int fourcc)
926 {
927 unsigned int i;
928
929 for (i = 0; i < ARRAY_SIZE(format); i++)
930 if (format[i].fourcc == fourcc)
931 return format+i;
932 return NULL;
933 }
934
vidioc_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)935 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
936 struct v4l2_format *f)
937 {
938 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
939 struct tm6000_fmt *fmt;
940 enum v4l2_field field;
941
942 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
943 if (NULL == fmt) {
944 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Fourcc format (0x%08x)"
945 " invalid.\n", f->fmt.pix.pixelformat);
946 return -EINVAL;
947 }
948
949 field = f->fmt.pix.field;
950
951 field = V4L2_FIELD_INTERLACED;
952
953 tm6000_get_std_res(dev);
954
955 f->fmt.pix.width = dev->width;
956 f->fmt.pix.height = dev->height;
957
958 f->fmt.pix.width &= ~0x01;
959
960 f->fmt.pix.field = field;
961
962 f->fmt.pix.bytesperline =
963 (f->fmt.pix.width * fmt->depth) >> 3;
964 f->fmt.pix.sizeimage =
965 f->fmt.pix.height * f->fmt.pix.bytesperline;
966 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
967
968 return 0;
969 }
970
971 /*FIXME: This seems to be generic enough to be at videodev2 */
vidioc_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)972 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
973 struct v4l2_format *f)
974 {
975 struct tm6000_fh *fh = priv;
976 struct tm6000_core *dev = fh->dev;
977 int ret = vidioc_try_fmt_vid_cap(file, fh, f);
978 if (ret < 0)
979 return ret;
980
981 fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
982 fh->width = f->fmt.pix.width;
983 fh->height = f->fmt.pix.height;
984 fh->vb_vidq.field = f->fmt.pix.field;
985 fh->type = f->type;
986
987 dev->fourcc = f->fmt.pix.pixelformat;
988
989 tm6000_set_fourcc_format(dev);
990
991 return 0;
992 }
993
vidioc_reqbufs(struct file * file,void * priv,struct v4l2_requestbuffers * p)994 static int vidioc_reqbufs(struct file *file, void *priv,
995 struct v4l2_requestbuffers *p)
996 {
997 struct tm6000_fh *fh = priv;
998
999 return videobuf_reqbufs(&fh->vb_vidq, p);
1000 }
1001
vidioc_querybuf(struct file * file,void * priv,struct v4l2_buffer * p)1002 static int vidioc_querybuf(struct file *file, void *priv,
1003 struct v4l2_buffer *p)
1004 {
1005 struct tm6000_fh *fh = priv;
1006
1007 return videobuf_querybuf(&fh->vb_vidq, p);
1008 }
1009
vidioc_qbuf(struct file * file,void * priv,struct v4l2_buffer * p)1010 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1011 {
1012 struct tm6000_fh *fh = priv;
1013
1014 return videobuf_qbuf(&fh->vb_vidq, p);
1015 }
1016
vidioc_dqbuf(struct file * file,void * priv,struct v4l2_buffer * p)1017 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1018 {
1019 struct tm6000_fh *fh = priv;
1020
1021 return videobuf_dqbuf(&fh->vb_vidq, p,
1022 file->f_flags & O_NONBLOCK);
1023 }
1024
vidioc_streamon(struct file * file,void * priv,enum v4l2_buf_type i)1025 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
1026 {
1027 struct tm6000_fh *fh = priv;
1028 struct tm6000_core *dev = fh->dev;
1029
1030 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1031 return -EINVAL;
1032 if (i != fh->type)
1033 return -EINVAL;
1034
1035 if (!res_get(dev, fh, false))
1036 return -EBUSY;
1037 return videobuf_streamon(&fh->vb_vidq);
1038 }
1039
vidioc_streamoff(struct file * file,void * priv,enum v4l2_buf_type i)1040 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
1041 {
1042 struct tm6000_fh *fh = priv;
1043 struct tm6000_core *dev = fh->dev;
1044
1045 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1046 return -EINVAL;
1047
1048 if (i != fh->type)
1049 return -EINVAL;
1050
1051 videobuf_streamoff(&fh->vb_vidq);
1052 res_free(dev, fh);
1053
1054 return 0;
1055 }
1056
vidioc_s_std(struct file * file,void * priv,v4l2_std_id norm)1057 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1058 {
1059 int rc = 0;
1060 struct tm6000_fh *fh = priv;
1061 struct tm6000_core *dev = fh->dev;
1062
1063 dev->norm = norm;
1064 rc = tm6000_init_analog_mode(dev);
1065
1066 fh->width = dev->width;
1067 fh->height = dev->height;
1068
1069 if (rc < 0)
1070 return rc;
1071
1072 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->norm);
1073
1074 return 0;
1075 }
1076
vidioc_g_std(struct file * file,void * priv,v4l2_std_id * norm)1077 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1078 {
1079 struct tm6000_fh *fh = priv;
1080 struct tm6000_core *dev = fh->dev;
1081
1082 *norm = dev->norm;
1083 return 0;
1084 }
1085
1086 static const char *iname[] = {
1087 [TM6000_INPUT_TV] = "Television",
1088 [TM6000_INPUT_COMPOSITE1] = "Composite 1",
1089 [TM6000_INPUT_COMPOSITE2] = "Composite 2",
1090 [TM6000_INPUT_SVIDEO] = "S-Video",
1091 };
1092
vidioc_enum_input(struct file * file,void * priv,struct v4l2_input * i)1093 static int vidioc_enum_input(struct file *file, void *priv,
1094 struct v4l2_input *i)
1095 {
1096 struct tm6000_fh *fh = priv;
1097 struct tm6000_core *dev = fh->dev;
1098 unsigned int n;
1099
1100 n = i->index;
1101 if (n >= 3)
1102 return -EINVAL;
1103
1104 if (!dev->vinput[n].type)
1105 return -EINVAL;
1106
1107 i->index = n;
1108
1109 if (dev->vinput[n].type == TM6000_INPUT_TV)
1110 i->type = V4L2_INPUT_TYPE_TUNER;
1111 else
1112 i->type = V4L2_INPUT_TYPE_CAMERA;
1113
1114 strcpy(i->name, iname[dev->vinput[n].type]);
1115
1116 i->std = TM6000_STD;
1117
1118 return 0;
1119 }
1120
vidioc_g_input(struct file * file,void * priv,unsigned int * i)1121 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1122 {
1123 struct tm6000_fh *fh = priv;
1124 struct tm6000_core *dev = fh->dev;
1125
1126 *i = dev->input;
1127
1128 return 0;
1129 }
1130
vidioc_s_input(struct file * file,void * priv,unsigned int i)1131 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1132 {
1133 struct tm6000_fh *fh = priv;
1134 struct tm6000_core *dev = fh->dev;
1135 int rc = 0;
1136
1137 if (i >= 3)
1138 return -EINVAL;
1139 if (!dev->vinput[i].type)
1140 return -EINVAL;
1141
1142 dev->input = i;
1143
1144 rc = vidioc_s_std(file, priv, dev->norm);
1145
1146 return rc;
1147 }
1148
1149 /* --- controls ---------------------------------------------- */
1150
tm6000_s_ctrl(struct v4l2_ctrl * ctrl)1151 static int tm6000_s_ctrl(struct v4l2_ctrl *ctrl)
1152 {
1153 struct tm6000_core *dev = container_of(ctrl->handler, struct tm6000_core, ctrl_handler);
1154 u8 val = ctrl->val;
1155
1156 switch (ctrl->id) {
1157 case V4L2_CID_CONTRAST:
1158 tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val);
1159 return 0;
1160 case V4L2_CID_BRIGHTNESS:
1161 tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val);
1162 return 0;
1163 case V4L2_CID_SATURATION:
1164 tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val);
1165 return 0;
1166 case V4L2_CID_HUE:
1167 tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val);
1168 return 0;
1169 }
1170 return -EINVAL;
1171 }
1172
1173 static const struct v4l2_ctrl_ops tm6000_ctrl_ops = {
1174 .s_ctrl = tm6000_s_ctrl,
1175 };
1176
tm6000_radio_s_ctrl(struct v4l2_ctrl * ctrl)1177 static int tm6000_radio_s_ctrl(struct v4l2_ctrl *ctrl)
1178 {
1179 struct tm6000_core *dev = container_of(ctrl->handler,
1180 struct tm6000_core, radio_ctrl_handler);
1181 u8 val = ctrl->val;
1182
1183 switch (ctrl->id) {
1184 case V4L2_CID_AUDIO_MUTE:
1185 dev->ctl_mute = val;
1186 tm6000_tvaudio_set_mute(dev, val);
1187 return 0;
1188 case V4L2_CID_AUDIO_VOLUME:
1189 dev->ctl_volume = val;
1190 tm6000_set_volume(dev, val);
1191 return 0;
1192 }
1193 return -EINVAL;
1194 }
1195
1196 static const struct v4l2_ctrl_ops tm6000_radio_ctrl_ops = {
1197 .s_ctrl = tm6000_radio_s_ctrl,
1198 };
1199
vidioc_g_tuner(struct file * file,void * priv,struct v4l2_tuner * t)1200 static int vidioc_g_tuner(struct file *file, void *priv,
1201 struct v4l2_tuner *t)
1202 {
1203 struct tm6000_fh *fh = priv;
1204 struct tm6000_core *dev = fh->dev;
1205
1206 if (UNSET == dev->tuner_type)
1207 return -ENOTTY;
1208 if (0 != t->index)
1209 return -EINVAL;
1210
1211 strcpy(t->name, "Television");
1212 t->type = V4L2_TUNER_ANALOG_TV;
1213 t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO;
1214 t->rangehigh = 0xffffffffUL;
1215 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1216
1217 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1218
1219 t->audmode = dev->amode;
1220
1221 return 0;
1222 }
1223
vidioc_s_tuner(struct file * file,void * priv,const struct v4l2_tuner * t)1224 static int vidioc_s_tuner(struct file *file, void *priv,
1225 const struct v4l2_tuner *t)
1226 {
1227 struct tm6000_fh *fh = priv;
1228 struct tm6000_core *dev = fh->dev;
1229
1230 if (UNSET == dev->tuner_type)
1231 return -ENOTTY;
1232 if (0 != t->index)
1233 return -EINVAL;
1234
1235 if (t->audmode > V4L2_TUNER_MODE_STEREO)
1236 dev->amode = V4L2_TUNER_MODE_STEREO;
1237 else
1238 dev->amode = t->audmode;
1239 dprintk(dev, 3, "audio mode: %x\n", t->audmode);
1240
1241 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1242
1243 return 0;
1244 }
1245
vidioc_g_frequency(struct file * file,void * priv,struct v4l2_frequency * f)1246 static int vidioc_g_frequency(struct file *file, void *priv,
1247 struct v4l2_frequency *f)
1248 {
1249 struct tm6000_fh *fh = priv;
1250 struct tm6000_core *dev = fh->dev;
1251
1252 if (UNSET == dev->tuner_type)
1253 return -ENOTTY;
1254 if (f->tuner)
1255 return -EINVAL;
1256
1257 f->frequency = dev->freq;
1258
1259 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
1260
1261 return 0;
1262 }
1263
vidioc_s_frequency(struct file * file,void * priv,const struct v4l2_frequency * f)1264 static int vidioc_s_frequency(struct file *file, void *priv,
1265 const struct v4l2_frequency *f)
1266 {
1267 struct tm6000_fh *fh = priv;
1268 struct tm6000_core *dev = fh->dev;
1269
1270 if (UNSET == dev->tuner_type)
1271 return -ENOTTY;
1272 if (f->tuner != 0)
1273 return -EINVAL;
1274
1275 dev->freq = f->frequency;
1276 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1277
1278 return 0;
1279 }
1280
radio_g_tuner(struct file * file,void * priv,struct v4l2_tuner * t)1281 static int radio_g_tuner(struct file *file, void *priv,
1282 struct v4l2_tuner *t)
1283 {
1284 struct tm6000_fh *fh = file->private_data;
1285 struct tm6000_core *dev = fh->dev;
1286
1287 if (0 != t->index)
1288 return -EINVAL;
1289
1290 memset(t, 0, sizeof(*t));
1291 strcpy(t->name, "Radio");
1292 t->type = V4L2_TUNER_RADIO;
1293 t->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
1294 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1295 t->audmode = V4L2_TUNER_MODE_STEREO;
1296
1297 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1298
1299 return 0;
1300 }
1301
radio_s_tuner(struct file * file,void * priv,const struct v4l2_tuner * t)1302 static int radio_s_tuner(struct file *file, void *priv,
1303 const struct v4l2_tuner *t)
1304 {
1305 struct tm6000_fh *fh = file->private_data;
1306 struct tm6000_core *dev = fh->dev;
1307
1308 if (0 != t->index)
1309 return -EINVAL;
1310 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1311 return 0;
1312 }
1313
1314 /* ------------------------------------------------------------------
1315 File operations for the device
1316 ------------------------------------------------------------------*/
1317
__tm6000_open(struct file * file)1318 static int __tm6000_open(struct file *file)
1319 {
1320 struct video_device *vdev = video_devdata(file);
1321 struct tm6000_core *dev = video_drvdata(file);
1322 struct tm6000_fh *fh;
1323 enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1324 int rc;
1325 int radio = 0;
1326
1327 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
1328 video_device_node_name(vdev));
1329
1330 switch (vdev->vfl_type) {
1331 case VFL_TYPE_GRABBER:
1332 type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1333 break;
1334 case VFL_TYPE_VBI:
1335 type = V4L2_BUF_TYPE_VBI_CAPTURE;
1336 break;
1337 case VFL_TYPE_RADIO:
1338 radio = 1;
1339 break;
1340 }
1341
1342 /* If more than one user, mutex should be added */
1343 dev->users++;
1344
1345 dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
1346 video_device_node_name(vdev), v4l2_type_names[type],
1347 dev->users);
1348
1349 /* allocate + initialize per filehandle data */
1350 fh = kzalloc(sizeof(*fh), GFP_KERNEL);
1351 if (NULL == fh) {
1352 dev->users--;
1353 return -ENOMEM;
1354 }
1355
1356 v4l2_fh_init(&fh->fh, vdev);
1357 file->private_data = fh;
1358 fh->dev = dev;
1359 fh->radio = radio;
1360 dev->radio = radio;
1361 fh->type = type;
1362 dev->fourcc = format[0].fourcc;
1363
1364 fh->fmt = format_by_fourcc(dev->fourcc);
1365
1366 tm6000_get_std_res(dev);
1367
1368 fh->width = dev->width;
1369 fh->height = dev->height;
1370
1371 dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=0x%08lx, dev=0x%08lx, "
1372 "dev->vidq=0x%08lx\n",
1373 (unsigned long)fh, (unsigned long)dev,
1374 (unsigned long)&dev->vidq);
1375 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1376 "queued=%d\n", list_empty(&dev->vidq.queued));
1377 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1378 "active=%d\n", list_empty(&dev->vidq.active));
1379
1380 /* initialize hardware on analog mode */
1381 rc = tm6000_init_analog_mode(dev);
1382 if (rc < 0)
1383 return rc;
1384
1385 dev->mode = TM6000_MODE_ANALOG;
1386
1387 if (!fh->radio) {
1388 videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
1389 NULL, &dev->slock,
1390 fh->type,
1391 V4L2_FIELD_INTERLACED,
1392 sizeof(struct tm6000_buffer), fh, &dev->lock);
1393 } else {
1394 dprintk(dev, V4L2_DEBUG_OPEN, "video_open: setting radio device\n");
1395 tm6000_set_audio_rinput(dev);
1396 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1397 tm6000_prepare_isoc(dev);
1398 tm6000_start_thread(dev);
1399 }
1400 v4l2_fh_add(&fh->fh);
1401
1402 return 0;
1403 }
1404
tm6000_open(struct file * file)1405 static int tm6000_open(struct file *file)
1406 {
1407 struct video_device *vdev = video_devdata(file);
1408 int res;
1409
1410 mutex_lock(vdev->lock);
1411 res = __tm6000_open(file);
1412 mutex_unlock(vdev->lock);
1413 return res;
1414 }
1415
1416 static ssize_t
tm6000_read(struct file * file,char __user * data,size_t count,loff_t * pos)1417 tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
1418 {
1419 struct tm6000_fh *fh = file->private_data;
1420 struct tm6000_core *dev = fh->dev;
1421
1422 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1423 int res;
1424
1425 if (!res_get(fh->dev, fh, true))
1426 return -EBUSY;
1427
1428 if (mutex_lock_interruptible(&dev->lock))
1429 return -ERESTARTSYS;
1430 res = videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
1431 file->f_flags & O_NONBLOCK);
1432 mutex_unlock(&dev->lock);
1433 return res;
1434 }
1435 return 0;
1436 }
1437
1438 static unsigned int
__tm6000_poll(struct file * file,struct poll_table_struct * wait)1439 __tm6000_poll(struct file *file, struct poll_table_struct *wait)
1440 {
1441 unsigned long req_events = poll_requested_events(wait);
1442 struct tm6000_fh *fh = file->private_data;
1443 struct tm6000_buffer *buf;
1444 int res = 0;
1445
1446 if (v4l2_event_pending(&fh->fh))
1447 res = POLLPRI;
1448 else if (req_events & POLLPRI)
1449 poll_wait(file, &fh->fh.wait, wait);
1450 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1451 return res | POLLERR;
1452
1453 if (!!is_res_streaming(fh->dev, fh))
1454 return res | POLLERR;
1455
1456 if (!is_res_read(fh->dev, fh)) {
1457 /* streaming capture */
1458 if (list_empty(&fh->vb_vidq.stream))
1459 return res | POLLERR;
1460 buf = list_entry(fh->vb_vidq.stream.next, struct tm6000_buffer, vb.stream);
1461 poll_wait(file, &buf->vb.done, wait);
1462 if (buf->vb.state == VIDEOBUF_DONE ||
1463 buf->vb.state == VIDEOBUF_ERROR)
1464 return res | POLLIN | POLLRDNORM;
1465 } else if (req_events & (POLLIN | POLLRDNORM)) {
1466 /* read() capture */
1467 return res | videobuf_poll_stream(file, &fh->vb_vidq, wait);
1468 }
1469 return res;
1470 }
1471
tm6000_poll(struct file * file,struct poll_table_struct * wait)1472 static unsigned int tm6000_poll(struct file *file, struct poll_table_struct *wait)
1473 {
1474 struct tm6000_fh *fh = file->private_data;
1475 struct tm6000_core *dev = fh->dev;
1476 unsigned int res;
1477
1478 mutex_lock(&dev->lock);
1479 res = __tm6000_poll(file, wait);
1480 mutex_unlock(&dev->lock);
1481 return res;
1482 }
1483
tm6000_release(struct file * file)1484 static int tm6000_release(struct file *file)
1485 {
1486 struct tm6000_fh *fh = file->private_data;
1487 struct tm6000_core *dev = fh->dev;
1488 struct video_device *vdev = video_devdata(file);
1489
1490 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
1491 video_device_node_name(vdev), dev->users);
1492
1493 mutex_lock(&dev->lock);
1494 dev->users--;
1495
1496 res_free(dev, fh);
1497
1498 if (!dev->users) {
1499 tm6000_uninit_isoc(dev);
1500
1501 /* Stop interrupt USB pipe */
1502 tm6000_ir_int_stop(dev);
1503
1504 usb_reset_configuration(dev->udev);
1505
1506 if (dev->int_in.endp)
1507 usb_set_interface(dev->udev,
1508 dev->isoc_in.bInterfaceNumber, 2);
1509 else
1510 usb_set_interface(dev->udev,
1511 dev->isoc_in.bInterfaceNumber, 0);
1512
1513 /* Start interrupt USB pipe */
1514 tm6000_ir_int_start(dev);
1515
1516 if (!fh->radio)
1517 videobuf_mmap_free(&fh->vb_vidq);
1518 }
1519 v4l2_fh_del(&fh->fh);
1520 v4l2_fh_exit(&fh->fh);
1521 kfree(fh);
1522 mutex_unlock(&dev->lock);
1523
1524 return 0;
1525 }
1526
tm6000_mmap(struct file * file,struct vm_area_struct * vma)1527 static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
1528 {
1529 struct tm6000_fh *fh = file->private_data;
1530 struct tm6000_core *dev = fh->dev;
1531 int res;
1532
1533 if (mutex_lock_interruptible(&dev->lock))
1534 return -ERESTARTSYS;
1535 res = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1536 mutex_unlock(&dev->lock);
1537 return res;
1538 }
1539
1540 static struct v4l2_file_operations tm6000_fops = {
1541 .owner = THIS_MODULE,
1542 .open = tm6000_open,
1543 .release = tm6000_release,
1544 .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
1545 .read = tm6000_read,
1546 .poll = tm6000_poll,
1547 .mmap = tm6000_mmap,
1548 };
1549
1550 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1551 .vidioc_querycap = vidioc_querycap,
1552 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1553 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1554 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1555 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1556 .vidioc_s_std = vidioc_s_std,
1557 .vidioc_g_std = vidioc_g_std,
1558 .vidioc_enum_input = vidioc_enum_input,
1559 .vidioc_g_input = vidioc_g_input,
1560 .vidioc_s_input = vidioc_s_input,
1561 .vidioc_g_tuner = vidioc_g_tuner,
1562 .vidioc_s_tuner = vidioc_s_tuner,
1563 .vidioc_g_frequency = vidioc_g_frequency,
1564 .vidioc_s_frequency = vidioc_s_frequency,
1565 .vidioc_streamon = vidioc_streamon,
1566 .vidioc_streamoff = vidioc_streamoff,
1567 .vidioc_reqbufs = vidioc_reqbufs,
1568 .vidioc_querybuf = vidioc_querybuf,
1569 .vidioc_qbuf = vidioc_qbuf,
1570 .vidioc_dqbuf = vidioc_dqbuf,
1571 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1572 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1573 };
1574
1575 static struct video_device tm6000_template = {
1576 .name = "tm6000",
1577 .fops = &tm6000_fops,
1578 .ioctl_ops = &video_ioctl_ops,
1579 .release = video_device_release,
1580 .tvnorms = TM6000_STD,
1581 };
1582
1583 static const struct v4l2_file_operations radio_fops = {
1584 .owner = THIS_MODULE,
1585 .open = tm6000_open,
1586 .poll = v4l2_ctrl_poll,
1587 .release = tm6000_release,
1588 .unlocked_ioctl = video_ioctl2,
1589 };
1590
1591 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1592 .vidioc_querycap = vidioc_querycap,
1593 .vidioc_g_tuner = radio_g_tuner,
1594 .vidioc_s_tuner = radio_s_tuner,
1595 .vidioc_g_frequency = vidioc_g_frequency,
1596 .vidioc_s_frequency = vidioc_s_frequency,
1597 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1598 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1599 };
1600
1601 static struct video_device tm6000_radio_template = {
1602 .name = "tm6000",
1603 .fops = &radio_fops,
1604 .ioctl_ops = &radio_ioctl_ops,
1605 };
1606
1607 /* -----------------------------------------------------------------
1608 * Initialization and module stuff
1609 * ------------------------------------------------------------------
1610 */
1611
vdev_init(struct tm6000_core * dev,const struct video_device * template,const char * type_name)1612 static struct video_device *vdev_init(struct tm6000_core *dev,
1613 const struct video_device
1614 *template, const char *type_name)
1615 {
1616 struct video_device *vfd;
1617
1618 vfd = video_device_alloc();
1619 if (NULL == vfd)
1620 return NULL;
1621
1622 *vfd = *template;
1623 vfd->v4l2_dev = &dev->v4l2_dev;
1624 vfd->release = video_device_release;
1625 vfd->debug = tm6000_debug;
1626 vfd->lock = &dev->lock;
1627
1628 snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
1629
1630 video_set_drvdata(vfd, dev);
1631 return vfd;
1632 }
1633
tm6000_v4l2_register(struct tm6000_core * dev)1634 int tm6000_v4l2_register(struct tm6000_core *dev)
1635 {
1636 int ret = 0;
1637
1638 v4l2_ctrl_handler_init(&dev->ctrl_handler, 6);
1639 v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 2);
1640 v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
1641 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
1642 v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
1643 V4L2_CID_AUDIO_VOLUME, -15, 15, 1, 0);
1644 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1645 V4L2_CID_BRIGHTNESS, 0, 255, 1, 54);
1646 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1647 V4L2_CID_CONTRAST, 0, 255, 1, 119);
1648 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1649 V4L2_CID_SATURATION, 0, 255, 1, 112);
1650 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1651 V4L2_CID_HUE, -128, 127, 1, 0);
1652 v4l2_ctrl_add_handler(&dev->ctrl_handler,
1653 &dev->radio_ctrl_handler, NULL);
1654
1655 if (dev->radio_ctrl_handler.error)
1656 ret = dev->radio_ctrl_handler.error;
1657 if (!ret && dev->ctrl_handler.error)
1658 ret = dev->ctrl_handler.error;
1659 if (ret)
1660 goto free_ctrl;
1661
1662 dev->vfd = vdev_init(dev, &tm6000_template, "video");
1663
1664 if (!dev->vfd) {
1665 printk(KERN_INFO "%s: can't register video device\n",
1666 dev->name);
1667 ret = -ENOMEM;
1668 goto free_ctrl;
1669 }
1670 dev->vfd->ctrl_handler = &dev->ctrl_handler;
1671
1672 /* init video dma queues */
1673 INIT_LIST_HEAD(&dev->vidq.active);
1674 INIT_LIST_HEAD(&dev->vidq.queued);
1675
1676 ret = video_register_device(dev->vfd, VFL_TYPE_GRABBER, video_nr);
1677
1678 if (ret < 0) {
1679 printk(KERN_INFO "%s: can't register video device\n",
1680 dev->name);
1681 video_device_release(dev->vfd);
1682 dev->vfd = NULL;
1683 goto free_ctrl;
1684 }
1685
1686 printk(KERN_INFO "%s: registered device %s\n",
1687 dev->name, video_device_node_name(dev->vfd));
1688
1689 if (dev->caps.has_radio) {
1690 dev->radio_dev = vdev_init(dev, &tm6000_radio_template,
1691 "radio");
1692 if (!dev->radio_dev) {
1693 printk(KERN_INFO "%s: can't register radio device\n",
1694 dev->name);
1695 ret = -ENXIO;
1696 goto unreg_video;
1697 }
1698
1699 dev->radio_dev->ctrl_handler = &dev->radio_ctrl_handler;
1700 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
1701 radio_nr);
1702 if (ret < 0) {
1703 printk(KERN_INFO "%s: can't register radio device\n",
1704 dev->name);
1705 video_device_release(dev->radio_dev);
1706 goto unreg_video;
1707 }
1708
1709 printk(KERN_INFO "%s: registered device %s\n",
1710 dev->name, video_device_node_name(dev->radio_dev));
1711 }
1712
1713 printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
1714 return ret;
1715
1716 unreg_video:
1717 video_unregister_device(dev->vfd);
1718 free_ctrl:
1719 v4l2_ctrl_handler_free(&dev->ctrl_handler);
1720 v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1721 return ret;
1722 }
1723
tm6000_v4l2_unregister(struct tm6000_core * dev)1724 int tm6000_v4l2_unregister(struct tm6000_core *dev)
1725 {
1726 video_unregister_device(dev->vfd);
1727
1728 /* if URB buffers are still allocated free them now */
1729 tm6000_free_urb_buffers(dev);
1730
1731 if (dev->radio_dev) {
1732 if (video_is_registered(dev->radio_dev))
1733 video_unregister_device(dev->radio_dev);
1734 else
1735 video_device_release(dev->radio_dev);
1736 dev->radio_dev = NULL;
1737 }
1738
1739 return 0;
1740 }
1741
tm6000_v4l2_exit(void)1742 int tm6000_v4l2_exit(void)
1743 {
1744 return 0;
1745 }
1746
1747 module_param(video_nr, int, 0);
1748 MODULE_PARM_DESC(video_nr, "Allow changing video device number");
1749
1750 module_param_named(debug, tm6000_debug, int, 0444);
1751 MODULE_PARM_DESC(debug, "activates debug info");
1752
1753 module_param(vid_limit, int, 0644);
1754 MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
1755
1756 module_param(keep_urb, bool, 0);
1757 MODULE_PARM_DESC(keep_urb, "Keep urb buffers allocated even when the device is closed by the user");
1758