1 // SPDX-License-Identifier: GPL-2.0
2 // tm6000-video.c - driver for TM5600/TM6000/TM6010 USB video capture devices
3 //
4 // Copyright (c) 2006-2007 Mauro Carvalho Chehab <mchehab@kernel.org>
5 //
6 // Copyright (c) 2007 Michel Ludwig <michel.ludwig@gmail.com>
7 // - Fixed module load/unload
8
9 #include <linux/module.h>
10 #include <linux/delay.h>
11 #include <linux/errno.h>
12 #include <linux/fs.h>
13 #include <linux/kernel.h>
14 #include <linux/slab.h>
15 #include <linux/mm.h>
16 #include <linux/ioport.h>
17 #include <linux/init.h>
18 #include <linux/sched.h>
19 #include <linux/random.h>
20 #include <linux/usb.h>
21 #include <linux/videodev2.h>
22 #include <media/v4l2-ioctl.h>
23 #include <media/v4l2-event.h>
24 #include <media/tuner.h>
25 #include <linux/interrupt.h>
26 #include <linux/kthread.h>
27 #include <linux/highmem.h>
28 #include <linux/freezer.h>
29
30 #include "tm6000-regs.h"
31 #include "tm6000.h"
32
33 #define BUFFER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
34
35 /* Limits minimum and default number of buffers */
36 #define TM6000_MIN_BUF 4
37 #define TM6000_DEF_BUF 8
38
39 #define TM6000_NUM_URB_BUF 8
40
41 #define TM6000_MAX_ISO_PACKETS 46 /* Max number of ISO packets */
42
43 /* Declare static vars that will be used as parameters */
44 static unsigned int vid_limit = 16; /* Video memory limit, in Mb */
45 static int video_nr = -1; /* /dev/videoN, -1 for autodetect */
46 static int radio_nr = -1; /* /dev/radioN, -1 for autodetect */
47 static bool keep_urb; /* keep urb buffers allocated */
48
49 /* Debug level */
50 int tm6000_debug;
51 EXPORT_SYMBOL_GPL(tm6000_debug);
52
53 static struct tm6000_fmt format[] = {
54 {
55 .fourcc = V4L2_PIX_FMT_YUYV,
56 .depth = 16,
57 }, {
58 .fourcc = V4L2_PIX_FMT_UYVY,
59 .depth = 16,
60 }, {
61 .fourcc = V4L2_PIX_FMT_TM6000,
62 .depth = 16,
63 }
64 };
65
66 /* ------------------------------------------------------------------
67 * DMA and thread functions
68 * ------------------------------------------------------------------
69 */
70
71 #define norm_maxw(a) 720
72 #define norm_maxh(a) 576
73
74 #define norm_minw(a) norm_maxw(a)
75 #define norm_minh(a) norm_maxh(a)
76
77 /*
78 * video-buf generic routine to get the next available buffer
79 */
get_next_buf(struct tm6000_dmaqueue * dma_q,struct tm6000_buffer ** buf)80 static inline void get_next_buf(struct tm6000_dmaqueue *dma_q,
81 struct tm6000_buffer **buf)
82 {
83 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
84
85 if (list_empty(&dma_q->active)) {
86 dprintk(dev, V4L2_DEBUG_QUEUE, "No active queue to serve\n");
87 *buf = NULL;
88 return;
89 }
90
91 *buf = list_entry(dma_q->active.next,
92 struct tm6000_buffer, vb.queue);
93 }
94
95 /*
96 * Announces that a buffer were filled and request the next
97 */
buffer_filled(struct tm6000_core * dev,struct tm6000_dmaqueue * dma_q,struct tm6000_buffer * buf)98 static inline void buffer_filled(struct tm6000_core *dev,
99 struct tm6000_dmaqueue *dma_q,
100 struct tm6000_buffer *buf)
101 {
102 /* Advice that buffer was filled */
103 dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n", buf, buf->vb.i);
104 buf->vb.state = VIDEOBUF_DONE;
105 buf->vb.field_count++;
106 buf->vb.ts = ktime_get_ns();
107
108 list_del(&buf->vb.queue);
109 wake_up(&buf->vb.done);
110 }
111
112 /*
113 * Identify the tm5600/6000 buffer header type and properly handles
114 */
copy_streams(u8 * data,unsigned long len,struct urb * urb)115 static int copy_streams(u8 *data, unsigned long len,
116 struct urb *urb)
117 {
118 struct tm6000_dmaqueue *dma_q = urb->context;
119 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
120 u8 *ptr = data, *endp = data+len;
121 unsigned long header = 0;
122 int rc = 0;
123 unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
124 struct tm6000_buffer *vbuf = NULL;
125 char *voutp = NULL;
126 unsigned int linewidth;
127
128 if (!dev->radio) {
129 /* get video buffer */
130 get_next_buf(dma_q, &vbuf);
131
132 if (!vbuf)
133 return rc;
134 voutp = videobuf_to_vmalloc(&vbuf->vb);
135
136 if (!voutp)
137 return 0;
138 }
139
140 for (ptr = data; ptr < endp;) {
141 if (!dev->isoc_ctl.cmd) {
142 /* Header */
143 if (dev->isoc_ctl.tmp_buf_len > 0) {
144 /* from last urb or packet */
145 header = dev->isoc_ctl.tmp_buf;
146 if (4 - dev->isoc_ctl.tmp_buf_len > 0) {
147 memcpy((u8 *)&header +
148 dev->isoc_ctl.tmp_buf_len,
149 ptr,
150 4 - dev->isoc_ctl.tmp_buf_len);
151 ptr += 4 - dev->isoc_ctl.tmp_buf_len;
152 }
153 dev->isoc_ctl.tmp_buf_len = 0;
154 } else {
155 if (ptr + 3 >= endp) {
156 /* have incomplete header */
157 dev->isoc_ctl.tmp_buf_len = endp - ptr;
158 memcpy(&dev->isoc_ctl.tmp_buf, ptr,
159 dev->isoc_ctl.tmp_buf_len);
160 return rc;
161 }
162 /* Seek for sync */
163 for (; ptr < endp - 3; ptr++) {
164 if (*(ptr + 3) == 0x47)
165 break;
166 }
167 /* Get message header */
168 header = *(unsigned long *)ptr;
169 ptr += 4;
170 }
171
172 /* split the header fields */
173 size = ((header & 0x7e) << 1);
174 if (size > 0)
175 size -= 4;
176 block = (header >> 7) & 0xf;
177 field = (header >> 11) & 0x1;
178 line = (header >> 12) & 0x1ff;
179 cmd = (header >> 21) & 0x7;
180 /* Validates header fields */
181 if (size > TM6000_URB_MSG_LEN)
182 size = TM6000_URB_MSG_LEN;
183 pktsize = TM6000_URB_MSG_LEN;
184 /*
185 * calculate position in buffer and change the buffer
186 */
187 switch (cmd) {
188 case TM6000_URB_MSG_VIDEO:
189 if (!dev->radio) {
190 if ((dev->isoc_ctl.vfield != field) &&
191 (field == 1)) {
192 /*
193 * Announces that a new buffer
194 * were filled
195 */
196 buffer_filled(dev, dma_q, vbuf);
197 dprintk(dev, V4L2_DEBUG_ISOC,
198 "new buffer filled\n");
199 get_next_buf(dma_q, &vbuf);
200 if (!vbuf)
201 return rc;
202 voutp = videobuf_to_vmalloc(&vbuf->vb);
203 if (!voutp)
204 return rc;
205 memset(voutp, 0, vbuf->vb.size);
206 }
207 linewidth = vbuf->vb.width << 1;
208 pos = ((line << 1) - field - 1) *
209 linewidth + block * TM6000_URB_MSG_LEN;
210 /* Don't allow to write out of the buffer */
211 if (pos + size > vbuf->vb.size)
212 cmd = TM6000_URB_MSG_ERR;
213 dev->isoc_ctl.vfield = field;
214 }
215 break;
216 case TM6000_URB_MSG_VBI:
217 break;
218 case TM6000_URB_MSG_AUDIO:
219 case TM6000_URB_MSG_PTS:
220 size = pktsize; /* Size is always 180 bytes */
221 break;
222 }
223 } else {
224 /* Continue the last copy */
225 cmd = dev->isoc_ctl.cmd;
226 size = dev->isoc_ctl.size;
227 pos = dev->isoc_ctl.pos;
228 pktsize = dev->isoc_ctl.pktsize;
229 field = dev->isoc_ctl.field;
230 }
231 cpysize = (endp - ptr > size) ? size : endp - ptr;
232 if (cpysize) {
233 /* copy data in different buffers */
234 switch (cmd) {
235 case TM6000_URB_MSG_VIDEO:
236 /* Fills video buffer */
237 if (vbuf)
238 memcpy(&voutp[pos], ptr, cpysize);
239 break;
240 case TM6000_URB_MSG_AUDIO: {
241 int i;
242 for (i = 0; i < cpysize; i += 2)
243 swab16s((u16 *)(ptr + i));
244
245 tm6000_call_fillbuf(dev, TM6000_AUDIO, ptr, cpysize);
246 break;
247 }
248 case TM6000_URB_MSG_VBI:
249 /* Need some code to copy vbi buffer */
250 break;
251 case TM6000_URB_MSG_PTS: {
252 /* Need some code to copy pts */
253 u32 pts;
254 pts = *(u32 *)ptr;
255 dprintk(dev, V4L2_DEBUG_ISOC, "field %d, PTS %x",
256 field, pts);
257 break;
258 }
259 }
260 }
261 if (ptr + pktsize > endp) {
262 /*
263 * End of URB packet, but cmd processing is not
264 * complete. Preserve the state for a next packet
265 */
266 dev->isoc_ctl.pos = pos + cpysize;
267 dev->isoc_ctl.size = size - cpysize;
268 dev->isoc_ctl.cmd = cmd;
269 dev->isoc_ctl.field = field;
270 dev->isoc_ctl.pktsize = pktsize - (endp - ptr);
271 ptr += endp - ptr;
272 } else {
273 dev->isoc_ctl.cmd = 0;
274 ptr += pktsize;
275 }
276 }
277 return 0;
278 }
279
280 /*
281 * Identify the tm5600/6000 buffer header type and properly handles
282 */
copy_multiplexed(u8 * ptr,unsigned long len,struct urb * urb)283 static int copy_multiplexed(u8 *ptr, unsigned long len,
284 struct urb *urb)
285 {
286 struct tm6000_dmaqueue *dma_q = urb->context;
287 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
288 unsigned int pos = dev->isoc_ctl.pos, cpysize;
289 int rc = 1;
290 struct tm6000_buffer *buf;
291 char *outp = NULL;
292
293 get_next_buf(dma_q, &buf);
294 if (buf)
295 outp = videobuf_to_vmalloc(&buf->vb);
296
297 if (!outp)
298 return 0;
299
300 while (len > 0) {
301 cpysize = min(len, buf->vb.size-pos);
302 memcpy(&outp[pos], ptr, cpysize);
303 pos += cpysize;
304 ptr += cpysize;
305 len -= cpysize;
306 if (pos >= buf->vb.size) {
307 pos = 0;
308 /* Announces that a new buffer were filled */
309 buffer_filled(dev, dma_q, buf);
310 dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
311 get_next_buf(dma_q, &buf);
312 if (!buf)
313 break;
314 outp = videobuf_to_vmalloc(&(buf->vb));
315 if (!outp)
316 return rc;
317 pos = 0;
318 }
319 }
320
321 dev->isoc_ctl.pos = pos;
322 return rc;
323 }
324
print_err_status(struct tm6000_core * dev,int packet,int status)325 static inline void print_err_status(struct tm6000_core *dev,
326 int packet, int status)
327 {
328 char *errmsg = "Unknown";
329
330 switch (status) {
331 case -ENOENT:
332 errmsg = "unlinked synchronously";
333 break;
334 case -ECONNRESET:
335 errmsg = "unlinked asynchronously";
336 break;
337 case -ENOSR:
338 errmsg = "Buffer error (overrun)";
339 break;
340 case -EPIPE:
341 errmsg = "Stalled (device not responding)";
342 break;
343 case -EOVERFLOW:
344 errmsg = "Babble (bad cable?)";
345 break;
346 case -EPROTO:
347 errmsg = "Bit-stuff error (bad cable?)";
348 break;
349 case -EILSEQ:
350 errmsg = "CRC/Timeout (could be anything)";
351 break;
352 case -ETIME:
353 errmsg = "Device does not respond";
354 break;
355 }
356 if (packet < 0) {
357 dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
358 status, errmsg);
359 } else {
360 dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n",
361 packet, status, errmsg);
362 }
363 }
364
365
366 /*
367 * Controls the isoc copy of each urb packet
368 */
tm6000_isoc_copy(struct urb * urb)369 static inline int tm6000_isoc_copy(struct urb *urb)
370 {
371 struct tm6000_dmaqueue *dma_q = urb->context;
372 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
373 int i, len = 0, rc = 1, status;
374 char *p;
375
376 if (urb->status < 0) {
377 print_err_status(dev, -1, urb->status);
378 return 0;
379 }
380
381 for (i = 0; i < urb->number_of_packets; i++) {
382 status = urb->iso_frame_desc[i].status;
383
384 if (status < 0) {
385 print_err_status(dev, i, status);
386 continue;
387 }
388
389 len = urb->iso_frame_desc[i].actual_length;
390
391 if (len > 0) {
392 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
393 if (!urb->iso_frame_desc[i].status) {
394 if ((dev->fourcc) == V4L2_PIX_FMT_TM6000) {
395 rc = copy_multiplexed(p, len, urb);
396 if (rc <= 0)
397 return rc;
398 } else {
399 copy_streams(p, len, urb);
400 }
401 }
402 }
403 }
404 return rc;
405 }
406
407 /* ------------------------------------------------------------------
408 * URB control
409 * ------------------------------------------------------------------
410 */
411
412 /*
413 * IRQ callback, called by URB callback
414 */
tm6000_irq_callback(struct urb * urb)415 static void tm6000_irq_callback(struct urb *urb)
416 {
417 struct tm6000_dmaqueue *dma_q = urb->context;
418 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
419 unsigned long flags;
420 int i;
421
422 switch (urb->status) {
423 case 0:
424 case -ETIMEDOUT:
425 break;
426
427 case -ECONNRESET:
428 case -ENOENT:
429 case -ESHUTDOWN:
430 return;
431
432 default:
433 tm6000_err("urb completion error %d.\n", urb->status);
434 break;
435 }
436
437 spin_lock_irqsave(&dev->slock, flags);
438 tm6000_isoc_copy(urb);
439 spin_unlock_irqrestore(&dev->slock, flags);
440
441 /* Reset urb buffers */
442 for (i = 0; i < urb->number_of_packets; i++) {
443 urb->iso_frame_desc[i].status = 0;
444 urb->iso_frame_desc[i].actual_length = 0;
445 }
446
447 urb->status = usb_submit_urb(urb, GFP_ATOMIC);
448 if (urb->status)
449 tm6000_err("urb resubmit failed (error=%i)\n",
450 urb->status);
451 }
452
453 /*
454 * Allocate URB buffers
455 */
tm6000_alloc_urb_buffers(struct tm6000_core * dev)456 static int tm6000_alloc_urb_buffers(struct tm6000_core *dev)
457 {
458 int num_bufs = TM6000_NUM_URB_BUF;
459 int i;
460
461 if (dev->urb_buffer)
462 return 0;
463
464 dev->urb_buffer = kmalloc_array(num_bufs, sizeof(void *), GFP_KERNEL);
465 if (!dev->urb_buffer)
466 return -ENOMEM;
467
468 dev->urb_dma = kmalloc_array(num_bufs, sizeof(dma_addr_t *),
469 GFP_KERNEL);
470 if (!dev->urb_dma)
471 return -ENOMEM;
472
473 for (i = 0; i < num_bufs; i++) {
474 dev->urb_buffer[i] = usb_alloc_coherent(
475 dev->udev, dev->urb_size,
476 GFP_KERNEL, &dev->urb_dma[i]);
477 if (!dev->urb_buffer[i]) {
478 tm6000_err("unable to allocate %i bytes for transfer buffer %i\n",
479 dev->urb_size, i);
480 return -ENOMEM;
481 }
482 memset(dev->urb_buffer[i], 0, dev->urb_size);
483 }
484
485 return 0;
486 }
487
488 /*
489 * Free URB buffers
490 */
tm6000_free_urb_buffers(struct tm6000_core * dev)491 static int tm6000_free_urb_buffers(struct tm6000_core *dev)
492 {
493 int i;
494
495 if (!dev->urb_buffer)
496 return 0;
497
498 for (i = 0; i < TM6000_NUM_URB_BUF; i++) {
499 if (dev->urb_buffer[i]) {
500 usb_free_coherent(dev->udev,
501 dev->urb_size,
502 dev->urb_buffer[i],
503 dev->urb_dma[i]);
504 dev->urb_buffer[i] = NULL;
505 }
506 }
507 kfree(dev->urb_buffer);
508 kfree(dev->urb_dma);
509 dev->urb_buffer = NULL;
510 dev->urb_dma = NULL;
511
512 return 0;
513 }
514
515 /*
516 * Stop and Deallocate URBs
517 */
tm6000_uninit_isoc(struct tm6000_core * dev)518 static void tm6000_uninit_isoc(struct tm6000_core *dev)
519 {
520 struct urb *urb;
521 int i;
522
523 dev->isoc_ctl.buf = NULL;
524 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
525 urb = dev->isoc_ctl.urb[i];
526 if (urb) {
527 usb_kill_urb(urb);
528 usb_unlink_urb(urb);
529 usb_free_urb(urb);
530 dev->isoc_ctl.urb[i] = NULL;
531 }
532 dev->isoc_ctl.transfer_buffer[i] = NULL;
533 }
534
535 if (!keep_urb)
536 tm6000_free_urb_buffers(dev);
537
538 kfree(dev->isoc_ctl.urb);
539 kfree(dev->isoc_ctl.transfer_buffer);
540
541 dev->isoc_ctl.urb = NULL;
542 dev->isoc_ctl.transfer_buffer = NULL;
543 dev->isoc_ctl.num_bufs = 0;
544 }
545
546 /*
547 * Assign URBs and start IRQ
548 */
tm6000_prepare_isoc(struct tm6000_core * dev)549 static int tm6000_prepare_isoc(struct tm6000_core *dev)
550 {
551 struct tm6000_dmaqueue *dma_q = &dev->vidq;
552 int i, j, sb_size, pipe, size, max_packets;
553 int num_bufs = TM6000_NUM_URB_BUF;
554 struct urb *urb;
555
556 /* De-allocates all pending stuff */
557 tm6000_uninit_isoc(dev);
558 /* Stop interrupt USB pipe */
559 tm6000_ir_int_stop(dev);
560
561 usb_set_interface(dev->udev,
562 dev->isoc_in.bInterfaceNumber,
563 dev->isoc_in.bAlternateSetting);
564
565 /* Start interrupt USB pipe */
566 tm6000_ir_int_start(dev);
567
568 pipe = usb_rcvisocpipe(dev->udev,
569 dev->isoc_in.endp->desc.bEndpointAddress &
570 USB_ENDPOINT_NUMBER_MASK);
571
572 size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
573
574 if (size > dev->isoc_in.maxsize)
575 size = dev->isoc_in.maxsize;
576
577 dev->isoc_ctl.max_pkt_size = size;
578
579 max_packets = TM6000_MAX_ISO_PACKETS;
580 sb_size = max_packets * size;
581 dev->urb_size = sb_size;
582
583 dev->isoc_ctl.num_bufs = num_bufs;
584
585 dev->isoc_ctl.urb = kmalloc_array(num_bufs, sizeof(void *),
586 GFP_KERNEL);
587 if (!dev->isoc_ctl.urb)
588 return -ENOMEM;
589
590 dev->isoc_ctl.transfer_buffer = kmalloc_array(num_bufs,
591 sizeof(void *),
592 GFP_KERNEL);
593 if (!dev->isoc_ctl.transfer_buffer) {
594 kfree(dev->isoc_ctl.urb);
595 return -ENOMEM;
596 }
597
598 dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets (%d bytes) of %d bytes each to handle %u size\n",
599 max_packets, num_bufs, sb_size,
600 dev->isoc_in.maxsize, size);
601
602
603 if (tm6000_alloc_urb_buffers(dev) < 0) {
604 tm6000_err("cannot allocate memory for urb buffers\n");
605
606 /* call free, as some buffers might have been allocated */
607 tm6000_free_urb_buffers(dev);
608 kfree(dev->isoc_ctl.urb);
609 kfree(dev->isoc_ctl.transfer_buffer);
610 return -ENOMEM;
611 }
612
613 /* allocate urbs and transfer buffers */
614 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
615 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
616 if (!urb) {
617 tm6000_uninit_isoc(dev);
618 tm6000_free_urb_buffers(dev);
619 return -ENOMEM;
620 }
621 dev->isoc_ctl.urb[i] = urb;
622
623 urb->transfer_dma = dev->urb_dma[i];
624 dev->isoc_ctl.transfer_buffer[i] = dev->urb_buffer[i];
625
626 usb_fill_bulk_urb(urb, dev->udev, pipe,
627 dev->isoc_ctl.transfer_buffer[i], sb_size,
628 tm6000_irq_callback, dma_q);
629 urb->interval = dev->isoc_in.endp->desc.bInterval;
630 urb->number_of_packets = max_packets;
631 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
632
633 for (j = 0; j < max_packets; j++) {
634 urb->iso_frame_desc[j].offset = size * j;
635 urb->iso_frame_desc[j].length = size;
636 }
637 }
638
639 return 0;
640 }
641
tm6000_start_thread(struct tm6000_core * dev)642 static int tm6000_start_thread(struct tm6000_core *dev)
643 {
644 struct tm6000_dmaqueue *dma_q = &dev->vidq;
645 int i;
646
647 dma_q->frame = 0;
648 dma_q->ini_jiffies = jiffies;
649
650 init_waitqueue_head(&dma_q->wq);
651
652 /* submit urbs and enables IRQ */
653 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
654 int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
655 if (rc) {
656 tm6000_err("submit of urb %i failed (error=%i)\n", i,
657 rc);
658 tm6000_uninit_isoc(dev);
659 return rc;
660 }
661 }
662
663 return 0;
664 }
665
666 /* ------------------------------------------------------------------
667 * Videobuf operations
668 * ------------------------------------------------------------------
669 */
670
671 static int
buffer_setup(struct videobuf_queue * vq,unsigned int * count,unsigned int * size)672 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
673 {
674 struct tm6000_fh *fh = vq->priv_data;
675
676 *size = fh->fmt->depth * fh->width * fh->height >> 3;
677 if (0 == *count)
678 *count = TM6000_DEF_BUF;
679
680 if (*count < TM6000_MIN_BUF)
681 *count = TM6000_MIN_BUF;
682
683 while (*size * *count > vid_limit * 1024 * 1024)
684 (*count)--;
685
686 return 0;
687 }
688
free_buffer(struct videobuf_queue * vq,struct tm6000_buffer * buf)689 static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf)
690 {
691 struct tm6000_fh *fh = vq->priv_data;
692 struct tm6000_core *dev = fh->dev;
693 unsigned long flags;
694
695 BUG_ON(in_interrupt());
696
697 /* We used to wait for the buffer to finish here, but this didn't work
698 because, as we were keeping the state as VIDEOBUF_QUEUED,
699 videobuf_queue_cancel marked it as finished for us.
700 (Also, it could wedge forever if the hardware was misconfigured.)
701
702 This should be safe; by the time we get here, the buffer isn't
703 queued anymore. If we ever start marking the buffers as
704 VIDEOBUF_ACTIVE, it won't be, though.
705 */
706 spin_lock_irqsave(&dev->slock, flags);
707 if (dev->isoc_ctl.buf == buf)
708 dev->isoc_ctl.buf = NULL;
709 spin_unlock_irqrestore(&dev->slock, flags);
710
711 videobuf_vmalloc_free(&buf->vb);
712 buf->vb.state = VIDEOBUF_NEEDS_INIT;
713 }
714
715 static int
buffer_prepare(struct videobuf_queue * vq,struct videobuf_buffer * vb,enum v4l2_field field)716 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
717 enum v4l2_field field)
718 {
719 struct tm6000_fh *fh = vq->priv_data;
720 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
721 struct tm6000_core *dev = fh->dev;
722 int rc = 0;
723
724 BUG_ON(NULL == fh->fmt);
725
726
727 /* FIXME: It assumes depth=2 */
728 /* The only currently supported format is 16 bits/pixel */
729 buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
730 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
731 return -EINVAL;
732
733 if (buf->fmt != fh->fmt ||
734 buf->vb.width != fh->width ||
735 buf->vb.height != fh->height ||
736 buf->vb.field != field) {
737 buf->fmt = fh->fmt;
738 buf->vb.width = fh->width;
739 buf->vb.height = fh->height;
740 buf->vb.field = field;
741 buf->vb.state = VIDEOBUF_NEEDS_INIT;
742 }
743
744 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
745 rc = videobuf_iolock(vq, &buf->vb, NULL);
746 if (rc != 0)
747 goto fail;
748 }
749
750 if (!dev->isoc_ctl.num_bufs) {
751 rc = tm6000_prepare_isoc(dev);
752 if (rc < 0)
753 goto fail;
754
755 rc = tm6000_start_thread(dev);
756 if (rc < 0)
757 goto fail;
758
759 }
760
761 buf->vb.state = VIDEOBUF_PREPARED;
762 return 0;
763
764 fail:
765 free_buffer(vq, buf);
766 return rc;
767 }
768
769 static void
buffer_queue(struct videobuf_queue * vq,struct videobuf_buffer * vb)770 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
771 {
772 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
773 struct tm6000_fh *fh = vq->priv_data;
774 struct tm6000_core *dev = fh->dev;
775 struct tm6000_dmaqueue *vidq = &dev->vidq;
776
777 buf->vb.state = VIDEOBUF_QUEUED;
778 list_add_tail(&buf->vb.queue, &vidq->active);
779 }
780
buffer_release(struct videobuf_queue * vq,struct videobuf_buffer * vb)781 static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
782 {
783 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
784
785 free_buffer(vq, buf);
786 }
787
788 static const struct videobuf_queue_ops tm6000_video_qops = {
789 .buf_setup = buffer_setup,
790 .buf_prepare = buffer_prepare,
791 .buf_queue = buffer_queue,
792 .buf_release = buffer_release,
793 };
794
795 /* ------------------------------------------------------------------
796 * IOCTL handling
797 * ------------------------------------------------------------------
798 */
799
is_res_read(struct tm6000_core * dev,struct tm6000_fh * fh)800 static bool is_res_read(struct tm6000_core *dev, struct tm6000_fh *fh)
801 {
802 /* Is the current fh handling it? if so, that's OK */
803 if (dev->resources == fh && dev->is_res_read)
804 return true;
805
806 return false;
807 }
808
is_res_streaming(struct tm6000_core * dev,struct tm6000_fh * fh)809 static bool is_res_streaming(struct tm6000_core *dev, struct tm6000_fh *fh)
810 {
811 /* Is the current fh handling it? if so, that's OK */
812 if (dev->resources == fh)
813 return true;
814
815 return false;
816 }
817
res_get(struct tm6000_core * dev,struct tm6000_fh * fh,bool is_res_read)818 static bool res_get(struct tm6000_core *dev, struct tm6000_fh *fh,
819 bool is_res_read)
820 {
821 /* Is the current fh handling it? if so, that's OK */
822 if (dev->resources == fh && dev->is_res_read == is_res_read)
823 return true;
824
825 /* is it free? */
826 if (dev->resources)
827 return false;
828
829 /* grab it */
830 dev->resources = fh;
831 dev->is_res_read = is_res_read;
832 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
833 return true;
834 }
835
res_free(struct tm6000_core * dev,struct tm6000_fh * fh)836 static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
837 {
838 /* Is the current fh handling it? if so, that's OK */
839 if (dev->resources != fh)
840 return;
841
842 dev->resources = NULL;
843 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
844 }
845
846 /* ------------------------------------------------------------------
847 * IOCTL vidioc handling
848 * ------------------------------------------------------------------
849 */
vidioc_querycap(struct file * file,void * priv,struct v4l2_capability * cap)850 static int vidioc_querycap(struct file *file, void *priv,
851 struct v4l2_capability *cap)
852 {
853 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
854
855 strscpy(cap->driver, "tm6000", sizeof(cap->driver));
856 strscpy(cap->card, "Trident TVMaster TM5600/6000/6010",
857 sizeof(cap->card));
858 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
859 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
860 V4L2_CAP_DEVICE_CAPS;
861 if (dev->tuner_type != TUNER_ABSENT)
862 cap->capabilities |= V4L2_CAP_TUNER;
863 if (dev->caps.has_radio)
864 cap->capabilities |= V4L2_CAP_RADIO;
865
866 return 0;
867 }
868
vidioc_enum_fmt_vid_cap(struct file * file,void * priv,struct v4l2_fmtdesc * f)869 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
870 struct v4l2_fmtdesc *f)
871 {
872 if (f->index >= ARRAY_SIZE(format))
873 return -EINVAL;
874
875 f->pixelformat = format[f->index].fourcc;
876 return 0;
877 }
878
vidioc_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)879 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
880 struct v4l2_format *f)
881 {
882 struct tm6000_fh *fh = priv;
883
884 f->fmt.pix.width = fh->width;
885 f->fmt.pix.height = fh->height;
886 f->fmt.pix.field = fh->vb_vidq.field;
887 f->fmt.pix.pixelformat = fh->fmt->fourcc;
888 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
889 f->fmt.pix.bytesperline =
890 (f->fmt.pix.width * fh->fmt->depth) >> 3;
891 f->fmt.pix.sizeimage =
892 f->fmt.pix.height * f->fmt.pix.bytesperline;
893
894 return 0;
895 }
896
format_by_fourcc(unsigned int fourcc)897 static struct tm6000_fmt *format_by_fourcc(unsigned int fourcc)
898 {
899 unsigned int i;
900
901 for (i = 0; i < ARRAY_SIZE(format); i++)
902 if (format[i].fourcc == fourcc)
903 return format+i;
904 return NULL;
905 }
906
vidioc_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)907 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
908 struct v4l2_format *f)
909 {
910 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
911 struct tm6000_fmt *fmt;
912 enum v4l2_field field;
913
914 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
915 if (NULL == fmt) {
916 dprintk(dev, 2, "Fourcc format (0x%08x) invalid.\n",
917 f->fmt.pix.pixelformat);
918 return -EINVAL;
919 }
920
921 field = f->fmt.pix.field;
922
923 field = V4L2_FIELD_INTERLACED;
924
925 tm6000_get_std_res(dev);
926
927 f->fmt.pix.width = dev->width;
928 f->fmt.pix.height = dev->height;
929
930 f->fmt.pix.width &= ~0x01;
931
932 f->fmt.pix.field = field;
933
934 f->fmt.pix.bytesperline =
935 (f->fmt.pix.width * fmt->depth) >> 3;
936 f->fmt.pix.sizeimage =
937 f->fmt.pix.height * f->fmt.pix.bytesperline;
938 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
939
940 return 0;
941 }
942
943 /*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)944 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
945 struct v4l2_format *f)
946 {
947 struct tm6000_fh *fh = priv;
948 struct tm6000_core *dev = fh->dev;
949 int ret = vidioc_try_fmt_vid_cap(file, fh, f);
950 if (ret < 0)
951 return ret;
952
953 fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
954 fh->width = f->fmt.pix.width;
955 fh->height = f->fmt.pix.height;
956 fh->vb_vidq.field = f->fmt.pix.field;
957 fh->type = f->type;
958
959 dev->fourcc = f->fmt.pix.pixelformat;
960
961 tm6000_set_fourcc_format(dev);
962
963 return 0;
964 }
965
vidioc_reqbufs(struct file * file,void * priv,struct v4l2_requestbuffers * p)966 static int vidioc_reqbufs(struct file *file, void *priv,
967 struct v4l2_requestbuffers *p)
968 {
969 struct tm6000_fh *fh = priv;
970
971 return videobuf_reqbufs(&fh->vb_vidq, p);
972 }
973
vidioc_querybuf(struct file * file,void * priv,struct v4l2_buffer * p)974 static int vidioc_querybuf(struct file *file, void *priv,
975 struct v4l2_buffer *p)
976 {
977 struct tm6000_fh *fh = priv;
978
979 return videobuf_querybuf(&fh->vb_vidq, p);
980 }
981
vidioc_qbuf(struct file * file,void * priv,struct v4l2_buffer * p)982 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
983 {
984 struct tm6000_fh *fh = priv;
985
986 return videobuf_qbuf(&fh->vb_vidq, p);
987 }
988
vidioc_dqbuf(struct file * file,void * priv,struct v4l2_buffer * p)989 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
990 {
991 struct tm6000_fh *fh = priv;
992
993 return videobuf_dqbuf(&fh->vb_vidq, p,
994 file->f_flags & O_NONBLOCK);
995 }
996
vidioc_streamon(struct file * file,void * priv,enum v4l2_buf_type i)997 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
998 {
999 struct tm6000_fh *fh = priv;
1000 struct tm6000_core *dev = fh->dev;
1001
1002 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1003 return -EINVAL;
1004 if (i != fh->type)
1005 return -EINVAL;
1006
1007 if (!res_get(dev, fh, false))
1008 return -EBUSY;
1009 return videobuf_streamon(&fh->vb_vidq);
1010 }
1011
vidioc_streamoff(struct file * file,void * priv,enum v4l2_buf_type i)1012 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
1013 {
1014 struct tm6000_fh *fh = priv;
1015 struct tm6000_core *dev = fh->dev;
1016
1017 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1018 return -EINVAL;
1019
1020 if (i != fh->type)
1021 return -EINVAL;
1022
1023 videobuf_streamoff(&fh->vb_vidq);
1024 res_free(dev, fh);
1025
1026 return 0;
1027 }
1028
vidioc_s_std(struct file * file,void * priv,v4l2_std_id norm)1029 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1030 {
1031 int rc = 0;
1032 struct tm6000_fh *fh = priv;
1033 struct tm6000_core *dev = fh->dev;
1034
1035 dev->norm = norm;
1036 rc = tm6000_init_analog_mode(dev);
1037
1038 fh->width = dev->width;
1039 fh->height = dev->height;
1040
1041 if (rc < 0)
1042 return rc;
1043
1044 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->norm);
1045
1046 return 0;
1047 }
1048
vidioc_g_std(struct file * file,void * priv,v4l2_std_id * norm)1049 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1050 {
1051 struct tm6000_fh *fh = priv;
1052 struct tm6000_core *dev = fh->dev;
1053
1054 *norm = dev->norm;
1055 return 0;
1056 }
1057
1058 static const char *iname[] = {
1059 [TM6000_INPUT_TV] = "Television",
1060 [TM6000_INPUT_COMPOSITE1] = "Composite 1",
1061 [TM6000_INPUT_COMPOSITE2] = "Composite 2",
1062 [TM6000_INPUT_SVIDEO] = "S-Video",
1063 };
1064
vidioc_enum_input(struct file * file,void * priv,struct v4l2_input * i)1065 static int vidioc_enum_input(struct file *file, void *priv,
1066 struct v4l2_input *i)
1067 {
1068 struct tm6000_fh *fh = priv;
1069 struct tm6000_core *dev = fh->dev;
1070 unsigned int n;
1071
1072 n = i->index;
1073 if (n >= 3)
1074 return -EINVAL;
1075
1076 if (!dev->vinput[n].type)
1077 return -EINVAL;
1078
1079 i->index = n;
1080
1081 if (dev->vinput[n].type == TM6000_INPUT_TV)
1082 i->type = V4L2_INPUT_TYPE_TUNER;
1083 else
1084 i->type = V4L2_INPUT_TYPE_CAMERA;
1085
1086 strscpy(i->name, iname[dev->vinput[n].type], sizeof(i->name));
1087
1088 i->std = TM6000_STD;
1089
1090 return 0;
1091 }
1092
vidioc_g_input(struct file * file,void * priv,unsigned int * i)1093 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1094 {
1095 struct tm6000_fh *fh = priv;
1096 struct tm6000_core *dev = fh->dev;
1097
1098 *i = dev->input;
1099
1100 return 0;
1101 }
1102
vidioc_s_input(struct file * file,void * priv,unsigned int i)1103 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1104 {
1105 struct tm6000_fh *fh = priv;
1106 struct tm6000_core *dev = fh->dev;
1107 int rc = 0;
1108
1109 if (i >= 3)
1110 return -EINVAL;
1111 if (!dev->vinput[i].type)
1112 return -EINVAL;
1113
1114 dev->input = i;
1115
1116 rc = vidioc_s_std(file, priv, dev->norm);
1117
1118 return rc;
1119 }
1120
1121 /* --- controls ---------------------------------------------- */
1122
tm6000_s_ctrl(struct v4l2_ctrl * ctrl)1123 static int tm6000_s_ctrl(struct v4l2_ctrl *ctrl)
1124 {
1125 struct tm6000_core *dev = container_of(ctrl->handler, struct tm6000_core, ctrl_handler);
1126 u8 val = ctrl->val;
1127
1128 switch (ctrl->id) {
1129 case V4L2_CID_CONTRAST:
1130 tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val);
1131 return 0;
1132 case V4L2_CID_BRIGHTNESS:
1133 tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val);
1134 return 0;
1135 case V4L2_CID_SATURATION:
1136 tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val);
1137 return 0;
1138 case V4L2_CID_HUE:
1139 tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val);
1140 return 0;
1141 }
1142 return -EINVAL;
1143 }
1144
1145 static const struct v4l2_ctrl_ops tm6000_ctrl_ops = {
1146 .s_ctrl = tm6000_s_ctrl,
1147 };
1148
tm6000_radio_s_ctrl(struct v4l2_ctrl * ctrl)1149 static int tm6000_radio_s_ctrl(struct v4l2_ctrl *ctrl)
1150 {
1151 struct tm6000_core *dev = container_of(ctrl->handler,
1152 struct tm6000_core, radio_ctrl_handler);
1153 u8 val = ctrl->val;
1154
1155 switch (ctrl->id) {
1156 case V4L2_CID_AUDIO_MUTE:
1157 dev->ctl_mute = val;
1158 tm6000_tvaudio_set_mute(dev, val);
1159 return 0;
1160 case V4L2_CID_AUDIO_VOLUME:
1161 dev->ctl_volume = val;
1162 tm6000_set_volume(dev, val);
1163 return 0;
1164 }
1165 return -EINVAL;
1166 }
1167
1168 static const struct v4l2_ctrl_ops tm6000_radio_ctrl_ops = {
1169 .s_ctrl = tm6000_radio_s_ctrl,
1170 };
1171
vidioc_g_tuner(struct file * file,void * priv,struct v4l2_tuner * t)1172 static int vidioc_g_tuner(struct file *file, void *priv,
1173 struct v4l2_tuner *t)
1174 {
1175 struct tm6000_fh *fh = priv;
1176 struct tm6000_core *dev = fh->dev;
1177
1178 if (UNSET == dev->tuner_type)
1179 return -ENOTTY;
1180 if (0 != t->index)
1181 return -EINVAL;
1182
1183 strscpy(t->name, "Television", sizeof(t->name));
1184 t->type = V4L2_TUNER_ANALOG_TV;
1185 t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO;
1186 t->rangehigh = 0xffffffffUL;
1187 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1188
1189 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1190
1191 t->audmode = dev->amode;
1192
1193 return 0;
1194 }
1195
vidioc_s_tuner(struct file * file,void * priv,const struct v4l2_tuner * t)1196 static int vidioc_s_tuner(struct file *file, void *priv,
1197 const struct v4l2_tuner *t)
1198 {
1199 struct tm6000_fh *fh = priv;
1200 struct tm6000_core *dev = fh->dev;
1201
1202 if (UNSET == dev->tuner_type)
1203 return -ENOTTY;
1204 if (0 != t->index)
1205 return -EINVAL;
1206
1207 if (t->audmode > V4L2_TUNER_MODE_STEREO)
1208 dev->amode = V4L2_TUNER_MODE_STEREO;
1209 else
1210 dev->amode = t->audmode;
1211 dprintk(dev, 3, "audio mode: %x\n", t->audmode);
1212
1213 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1214
1215 return 0;
1216 }
1217
vidioc_g_frequency(struct file * file,void * priv,struct v4l2_frequency * f)1218 static int vidioc_g_frequency(struct file *file, void *priv,
1219 struct v4l2_frequency *f)
1220 {
1221 struct tm6000_fh *fh = priv;
1222 struct tm6000_core *dev = fh->dev;
1223
1224 if (UNSET == dev->tuner_type)
1225 return -ENOTTY;
1226 if (f->tuner)
1227 return -EINVAL;
1228
1229 f->frequency = dev->freq;
1230
1231 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
1232
1233 return 0;
1234 }
1235
vidioc_s_frequency(struct file * file,void * priv,const struct v4l2_frequency * f)1236 static int vidioc_s_frequency(struct file *file, void *priv,
1237 const struct v4l2_frequency *f)
1238 {
1239 struct tm6000_fh *fh = priv;
1240 struct tm6000_core *dev = fh->dev;
1241
1242 if (UNSET == dev->tuner_type)
1243 return -ENOTTY;
1244 if (f->tuner != 0)
1245 return -EINVAL;
1246
1247 dev->freq = f->frequency;
1248 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1249
1250 return 0;
1251 }
1252
radio_g_tuner(struct file * file,void * priv,struct v4l2_tuner * t)1253 static int radio_g_tuner(struct file *file, void *priv,
1254 struct v4l2_tuner *t)
1255 {
1256 struct tm6000_fh *fh = file->private_data;
1257 struct tm6000_core *dev = fh->dev;
1258
1259 if (0 != t->index)
1260 return -EINVAL;
1261
1262 memset(t, 0, sizeof(*t));
1263 strscpy(t->name, "Radio", sizeof(t->name));
1264 t->type = V4L2_TUNER_RADIO;
1265 t->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
1266 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1267 t->audmode = V4L2_TUNER_MODE_STEREO;
1268
1269 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1270
1271 return 0;
1272 }
1273
radio_s_tuner(struct file * file,void * priv,const struct v4l2_tuner * t)1274 static int radio_s_tuner(struct file *file, void *priv,
1275 const struct v4l2_tuner *t)
1276 {
1277 struct tm6000_fh *fh = file->private_data;
1278 struct tm6000_core *dev = fh->dev;
1279
1280 if (0 != t->index)
1281 return -EINVAL;
1282 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1283 return 0;
1284 }
1285
1286 /* ------------------------------------------------------------------
1287 File operations for the device
1288 ------------------------------------------------------------------*/
1289
__tm6000_open(struct file * file)1290 static int __tm6000_open(struct file *file)
1291 {
1292 struct video_device *vdev = video_devdata(file);
1293 struct tm6000_core *dev = video_drvdata(file);
1294 struct tm6000_fh *fh;
1295 enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1296 int rc;
1297 int radio = 0;
1298
1299 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
1300 video_device_node_name(vdev));
1301
1302 switch (vdev->vfl_type) {
1303 case VFL_TYPE_VIDEO:
1304 type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1305 break;
1306 case VFL_TYPE_VBI:
1307 type = V4L2_BUF_TYPE_VBI_CAPTURE;
1308 break;
1309 case VFL_TYPE_RADIO:
1310 radio = 1;
1311 break;
1312 default:
1313 return -EINVAL;
1314 }
1315
1316 /* If more than one user, mutex should be added */
1317 dev->users++;
1318
1319 dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
1320 video_device_node_name(vdev), v4l2_type_names[type],
1321 dev->users);
1322
1323 /* allocate + initialize per filehandle data */
1324 fh = kzalloc(sizeof(*fh), GFP_KERNEL);
1325 if (NULL == fh) {
1326 dev->users--;
1327 return -ENOMEM;
1328 }
1329
1330 v4l2_fh_init(&fh->fh, vdev);
1331 file->private_data = fh;
1332 fh->dev = dev;
1333 fh->radio = radio;
1334 dev->radio = radio;
1335 fh->type = type;
1336 dev->fourcc = format[0].fourcc;
1337
1338 fh->fmt = format_by_fourcc(dev->fourcc);
1339
1340 tm6000_get_std_res(dev);
1341
1342 fh->width = dev->width;
1343 fh->height = dev->height;
1344
1345 dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=%p, dev=%p, dev->vidq=%p\n",
1346 fh, dev, &dev->vidq);
1347 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty queued=%d\n",
1348 list_empty(&dev->vidq.queued));
1349 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty active=%d\n",
1350 list_empty(&dev->vidq.active));
1351
1352 /* initialize hardware on analog mode */
1353 rc = tm6000_init_analog_mode(dev);
1354 if (rc < 0) {
1355 v4l2_fh_exit(&fh->fh);
1356 kfree(fh);
1357 return rc;
1358 }
1359
1360 dev->mode = TM6000_MODE_ANALOG;
1361
1362 if (!fh->radio) {
1363 videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
1364 NULL, &dev->slock,
1365 fh->type,
1366 V4L2_FIELD_INTERLACED,
1367 sizeof(struct tm6000_buffer), fh, &dev->lock);
1368 } else {
1369 dprintk(dev, V4L2_DEBUG_OPEN, "video_open: setting radio device\n");
1370 tm6000_set_audio_rinput(dev);
1371 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1372 tm6000_prepare_isoc(dev);
1373 tm6000_start_thread(dev);
1374 }
1375 v4l2_fh_add(&fh->fh);
1376
1377 return 0;
1378 }
1379
tm6000_open(struct file * file)1380 static int tm6000_open(struct file *file)
1381 {
1382 struct video_device *vdev = video_devdata(file);
1383 int res;
1384
1385 mutex_lock(vdev->lock);
1386 res = __tm6000_open(file);
1387 mutex_unlock(vdev->lock);
1388 return res;
1389 }
1390
1391 static ssize_t
tm6000_read(struct file * file,char __user * data,size_t count,loff_t * pos)1392 tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
1393 {
1394 struct tm6000_fh *fh = file->private_data;
1395 struct tm6000_core *dev = fh->dev;
1396
1397 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1398 int res;
1399
1400 if (!res_get(fh->dev, fh, true))
1401 return -EBUSY;
1402
1403 if (mutex_lock_interruptible(&dev->lock))
1404 return -ERESTARTSYS;
1405 res = videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
1406 file->f_flags & O_NONBLOCK);
1407 mutex_unlock(&dev->lock);
1408 return res;
1409 }
1410 return 0;
1411 }
1412
1413 static __poll_t
__tm6000_poll(struct file * file,struct poll_table_struct * wait)1414 __tm6000_poll(struct file *file, struct poll_table_struct *wait)
1415 {
1416 __poll_t req_events = poll_requested_events(wait);
1417 struct tm6000_fh *fh = file->private_data;
1418 struct tm6000_buffer *buf;
1419 __poll_t res = 0;
1420
1421 if (v4l2_event_pending(&fh->fh))
1422 res = EPOLLPRI;
1423 else if (req_events & EPOLLPRI)
1424 poll_wait(file, &fh->fh.wait, wait);
1425 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1426 return res | EPOLLERR;
1427
1428 if (!!is_res_streaming(fh->dev, fh))
1429 return res | EPOLLERR;
1430
1431 if (!is_res_read(fh->dev, fh)) {
1432 /* streaming capture */
1433 if (list_empty(&fh->vb_vidq.stream))
1434 return res | EPOLLERR;
1435 buf = list_entry(fh->vb_vidq.stream.next, struct tm6000_buffer, vb.stream);
1436 poll_wait(file, &buf->vb.done, wait);
1437 if (buf->vb.state == VIDEOBUF_DONE ||
1438 buf->vb.state == VIDEOBUF_ERROR)
1439 return res | EPOLLIN | EPOLLRDNORM;
1440 } else if (req_events & (EPOLLIN | EPOLLRDNORM)) {
1441 /* read() capture */
1442 return res | videobuf_poll_stream(file, &fh->vb_vidq, wait);
1443 }
1444 return res;
1445 }
1446
tm6000_poll(struct file * file,struct poll_table_struct * wait)1447 static __poll_t tm6000_poll(struct file *file, struct poll_table_struct *wait)
1448 {
1449 struct tm6000_fh *fh = file->private_data;
1450 struct tm6000_core *dev = fh->dev;
1451 __poll_t res;
1452
1453 mutex_lock(&dev->lock);
1454 res = __tm6000_poll(file, wait);
1455 mutex_unlock(&dev->lock);
1456 return res;
1457 }
1458
tm6000_release(struct file * file)1459 static int tm6000_release(struct file *file)
1460 {
1461 struct tm6000_fh *fh = file->private_data;
1462 struct tm6000_core *dev = fh->dev;
1463 struct video_device *vdev = video_devdata(file);
1464
1465 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
1466 video_device_node_name(vdev), dev->users);
1467
1468 mutex_lock(&dev->lock);
1469 dev->users--;
1470
1471 res_free(dev, fh);
1472
1473 if (!dev->users) {
1474 tm6000_uninit_isoc(dev);
1475
1476 /* Stop interrupt USB pipe */
1477 tm6000_ir_int_stop(dev);
1478
1479 usb_reset_configuration(dev->udev);
1480
1481 if (dev->int_in.endp)
1482 usb_set_interface(dev->udev,
1483 dev->isoc_in.bInterfaceNumber, 2);
1484 else
1485 usb_set_interface(dev->udev,
1486 dev->isoc_in.bInterfaceNumber, 0);
1487
1488 /* Start interrupt USB pipe */
1489 tm6000_ir_int_start(dev);
1490
1491 if (!fh->radio)
1492 videobuf_mmap_free(&fh->vb_vidq);
1493 }
1494 v4l2_fh_del(&fh->fh);
1495 v4l2_fh_exit(&fh->fh);
1496 kfree(fh);
1497 mutex_unlock(&dev->lock);
1498
1499 return 0;
1500 }
1501
tm6000_mmap(struct file * file,struct vm_area_struct * vma)1502 static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
1503 {
1504 struct tm6000_fh *fh = file->private_data;
1505 struct tm6000_core *dev = fh->dev;
1506 int res;
1507
1508 if (mutex_lock_interruptible(&dev->lock))
1509 return -ERESTARTSYS;
1510 res = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1511 mutex_unlock(&dev->lock);
1512 return res;
1513 }
1514
1515 static const struct v4l2_file_operations tm6000_fops = {
1516 .owner = THIS_MODULE,
1517 .open = tm6000_open,
1518 .release = tm6000_release,
1519 .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
1520 .read = tm6000_read,
1521 .poll = tm6000_poll,
1522 .mmap = tm6000_mmap,
1523 };
1524
1525 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1526 .vidioc_querycap = vidioc_querycap,
1527 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1528 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1529 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1530 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1531 .vidioc_s_std = vidioc_s_std,
1532 .vidioc_g_std = vidioc_g_std,
1533 .vidioc_enum_input = vidioc_enum_input,
1534 .vidioc_g_input = vidioc_g_input,
1535 .vidioc_s_input = vidioc_s_input,
1536 .vidioc_g_tuner = vidioc_g_tuner,
1537 .vidioc_s_tuner = vidioc_s_tuner,
1538 .vidioc_g_frequency = vidioc_g_frequency,
1539 .vidioc_s_frequency = vidioc_s_frequency,
1540 .vidioc_streamon = vidioc_streamon,
1541 .vidioc_streamoff = vidioc_streamoff,
1542 .vidioc_reqbufs = vidioc_reqbufs,
1543 .vidioc_querybuf = vidioc_querybuf,
1544 .vidioc_qbuf = vidioc_qbuf,
1545 .vidioc_dqbuf = vidioc_dqbuf,
1546 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1547 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1548 };
1549
1550 static struct video_device tm6000_template = {
1551 .name = "tm6000",
1552 .fops = &tm6000_fops,
1553 .ioctl_ops = &video_ioctl_ops,
1554 .release = video_device_release_empty,
1555 .tvnorms = TM6000_STD,
1556 };
1557
1558 static const struct v4l2_file_operations radio_fops = {
1559 .owner = THIS_MODULE,
1560 .open = tm6000_open,
1561 .poll = v4l2_ctrl_poll,
1562 .release = tm6000_release,
1563 .unlocked_ioctl = video_ioctl2,
1564 };
1565
1566 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1567 .vidioc_querycap = vidioc_querycap,
1568 .vidioc_g_tuner = radio_g_tuner,
1569 .vidioc_s_tuner = radio_s_tuner,
1570 .vidioc_g_frequency = vidioc_g_frequency,
1571 .vidioc_s_frequency = vidioc_s_frequency,
1572 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1573 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1574 };
1575
1576 static struct video_device tm6000_radio_template = {
1577 .name = "tm6000",
1578 .fops = &radio_fops,
1579 .ioctl_ops = &radio_ioctl_ops,
1580 };
1581
1582 /* -----------------------------------------------------------------
1583 * Initialization and module stuff
1584 * ------------------------------------------------------------------
1585 */
1586
vdev_init(struct tm6000_core * dev,struct video_device * vfd,const struct video_device * template,const char * type_name)1587 static void vdev_init(struct tm6000_core *dev,
1588 struct video_device *vfd,
1589 const struct video_device
1590 *template, const char *type_name)
1591 {
1592 *vfd = *template;
1593 vfd->v4l2_dev = &dev->v4l2_dev;
1594 vfd->release = video_device_release_empty;
1595 vfd->lock = &dev->lock;
1596
1597 snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
1598
1599 video_set_drvdata(vfd, dev);
1600 }
1601
tm6000_v4l2_register(struct tm6000_core * dev)1602 int tm6000_v4l2_register(struct tm6000_core *dev)
1603 {
1604 int ret = 0;
1605
1606 v4l2_ctrl_handler_init(&dev->ctrl_handler, 6);
1607 v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 2);
1608 v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
1609 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
1610 v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
1611 V4L2_CID_AUDIO_VOLUME, -15, 15, 1, 0);
1612 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1613 V4L2_CID_BRIGHTNESS, 0, 255, 1, 54);
1614 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1615 V4L2_CID_CONTRAST, 0, 255, 1, 119);
1616 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1617 V4L2_CID_SATURATION, 0, 255, 1, 112);
1618 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1619 V4L2_CID_HUE, -128, 127, 1, 0);
1620 v4l2_ctrl_add_handler(&dev->ctrl_handler,
1621 &dev->radio_ctrl_handler, NULL, false);
1622
1623 if (dev->radio_ctrl_handler.error)
1624 ret = dev->radio_ctrl_handler.error;
1625 if (!ret && dev->ctrl_handler.error)
1626 ret = dev->ctrl_handler.error;
1627 if (ret)
1628 goto free_ctrl;
1629
1630 vdev_init(dev, &dev->vfd, &tm6000_template, "video");
1631
1632 dev->vfd.ctrl_handler = &dev->ctrl_handler;
1633 dev->vfd.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
1634 V4L2_CAP_READWRITE;
1635 if (dev->tuner_type != TUNER_ABSENT)
1636 dev->vfd.device_caps |= V4L2_CAP_TUNER;
1637
1638 /* init video dma queues */
1639 INIT_LIST_HEAD(&dev->vidq.active);
1640 INIT_LIST_HEAD(&dev->vidq.queued);
1641
1642 ret = video_register_device(&dev->vfd, VFL_TYPE_VIDEO, video_nr);
1643
1644 if (ret < 0) {
1645 printk(KERN_INFO "%s: can't register video device\n",
1646 dev->name);
1647 goto free_ctrl;
1648 }
1649
1650 printk(KERN_INFO "%s: registered device %s\n",
1651 dev->name, video_device_node_name(&dev->vfd));
1652
1653 if (dev->caps.has_radio) {
1654 vdev_init(dev, &dev->radio_dev, &tm6000_radio_template,
1655 "radio");
1656 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
1657 dev->radio_dev.device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER;
1658 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
1659 radio_nr);
1660 if (ret < 0) {
1661 printk(KERN_INFO "%s: can't register radio device\n",
1662 dev->name);
1663 goto unreg_video;
1664 }
1665
1666 printk(KERN_INFO "%s: registered device %s\n",
1667 dev->name, video_device_node_name(&dev->radio_dev));
1668 }
1669
1670 printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
1671 return ret;
1672
1673 unreg_video:
1674 video_unregister_device(&dev->vfd);
1675 free_ctrl:
1676 v4l2_ctrl_handler_free(&dev->ctrl_handler);
1677 v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1678 return ret;
1679 }
1680
tm6000_v4l2_unregister(struct tm6000_core * dev)1681 int tm6000_v4l2_unregister(struct tm6000_core *dev)
1682 {
1683 video_unregister_device(&dev->vfd);
1684
1685 /* if URB buffers are still allocated free them now */
1686 tm6000_free_urb_buffers(dev);
1687
1688 video_unregister_device(&dev->radio_dev);
1689 return 0;
1690 }
1691
tm6000_v4l2_exit(void)1692 int tm6000_v4l2_exit(void)
1693 {
1694 return 0;
1695 }
1696
1697 module_param(video_nr, int, 0);
1698 MODULE_PARM_DESC(video_nr, "Allow changing video device number");
1699
1700 module_param_named(debug, tm6000_debug, int, 0444);
1701 MODULE_PARM_DESC(debug, "activates debug info");
1702
1703 module_param(vid_limit, int, 0644);
1704 MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
1705
1706 module_param(keep_urb, bool, 0);
1707 MODULE_PARM_DESC(keep_urb, "Keep urb buffers allocated even when the device is closed by the user");
1708
