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Merge tag 'regmap-fix-v5.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux/fpc-iii.git] / drivers / media / usb / tm6000 / tm6000-video.c
blob3f650ede0c3dc50a3bd2970998759a677cbe6ea3
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 */
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 */
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 */
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 */
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
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 */
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 */
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 */
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(*dev->urb_buffer),
465 GFP_KERNEL);
466 if (!dev->urb_buffer)
467 return -ENOMEM;
468
469 dev->urb_dma = kmalloc_array(num_bufs, sizeof(*dev->urb_dma),
470 GFP_KERNEL);
471 if (!dev->urb_dma)
472 return -ENOMEM;
473
474 for (i = 0; i < num_bufs; i++) {
475 dev->urb_buffer[i] = usb_alloc_coherent(
476 dev->udev, dev->urb_size,
477 GFP_KERNEL, &dev->urb_dma[i]);
478 if (!dev->urb_buffer[i]) {
479 tm6000_err("unable to allocate %i bytes for transfer buffer %i\n",
480 dev->urb_size, i);
481 return -ENOMEM;
482 }
483 memset(dev->urb_buffer[i], 0, dev->urb_size);
484 }
485
486 return 0;
487 }
488
489 /*
490 * Free URB buffers
491 */
492 static int tm6000_free_urb_buffers(struct tm6000_core *dev)
493 {
494 int i;
495
496 if (!dev->urb_buffer)
497 return 0;
498
499 for (i = 0; i < TM6000_NUM_URB_BUF; i++) {
500 if (dev->urb_buffer[i]) {
501 usb_free_coherent(dev->udev,
502 dev->urb_size,
503 dev->urb_buffer[i],
504 dev->urb_dma[i]);
505 dev->urb_buffer[i] = NULL;
506 }
507 }
508 kfree(dev->urb_buffer);
509 kfree(dev->urb_dma);
510 dev->urb_buffer = NULL;
511 dev->urb_dma = NULL;
512
513 return 0;
514 }
515
516 /*
517 * Stop and Deallocate URBs
518 */
519 static void tm6000_uninit_isoc(struct tm6000_core *dev)
520 {
521 struct urb *urb;
522 int i;
523
524 dev->isoc_ctl.buf = NULL;
525 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
526 urb = dev->isoc_ctl.urb[i];
527 if (urb) {
528 usb_kill_urb(urb);
529 usb_unlink_urb(urb);
530 usb_free_urb(urb);
531 dev->isoc_ctl.urb[i] = NULL;
532 }
533 dev->isoc_ctl.transfer_buffer[i] = NULL;
534 }
535
536 if (!keep_urb)
537 tm6000_free_urb_buffers(dev);
538
539 kfree(dev->isoc_ctl.urb);
540 kfree(dev->isoc_ctl.transfer_buffer);
541
542 dev->isoc_ctl.urb = NULL;
543 dev->isoc_ctl.transfer_buffer = NULL;
544 dev->isoc_ctl.num_bufs = 0;
545 }
546
547 /*
548 * Assign URBs and start IRQ
549 */
550 static int tm6000_prepare_isoc(struct tm6000_core *dev)
551 {
552 struct tm6000_dmaqueue *dma_q = &dev->vidq;
553 int i, j, sb_size, pipe, size, max_packets;
554 int num_bufs = TM6000_NUM_URB_BUF;
555 struct urb *urb;
556
557 /* De-allocates all pending stuff */
558 tm6000_uninit_isoc(dev);
559 /* Stop interrupt USB pipe */
560 tm6000_ir_int_stop(dev);
561
562 usb_set_interface(dev->udev,
563 dev->isoc_in.bInterfaceNumber,
564 dev->isoc_in.bAlternateSetting);
565
566 /* Start interrupt USB pipe */
567 tm6000_ir_int_start(dev);
568
569 pipe = usb_rcvisocpipe(dev->udev,
570 dev->isoc_in.endp->desc.bEndpointAddress &
571 USB_ENDPOINT_NUMBER_MASK);
572
573 size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
574
575 if (size > dev->isoc_in.maxsize)
576 size = dev->isoc_in.maxsize;
577
578 dev->isoc_ctl.max_pkt_size = size;
579
580 max_packets = TM6000_MAX_ISO_PACKETS;
581 sb_size = max_packets * size;
582 dev->urb_size = sb_size;
583
584 dev->isoc_ctl.num_bufs = num_bufs;
585
586 dev->isoc_ctl.urb = kmalloc_array(num_bufs, sizeof(void *),
587 GFP_KERNEL);
588 if (!dev->isoc_ctl.urb)
589 return -ENOMEM;
590
591 dev->isoc_ctl.transfer_buffer = kmalloc_array(num_bufs,
592 sizeof(void *),
593 GFP_KERNEL);
594 if (!dev->isoc_ctl.transfer_buffer) {
595 kfree(dev->isoc_ctl.urb);
596 return -ENOMEM;
597 }
598
599 dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets (%d bytes) of %d bytes each to handle %u size\n",
600 max_packets, num_bufs, sb_size,
601 dev->isoc_in.maxsize, size);
602
603
604 if (tm6000_alloc_urb_buffers(dev) < 0) {
605 tm6000_err("cannot allocate memory for urb buffers\n");
606
607 /* call free, as some buffers might have been allocated */
608 tm6000_free_urb_buffers(dev);
609 kfree(dev->isoc_ctl.urb);
610 kfree(dev->isoc_ctl.transfer_buffer);
611 return -ENOMEM;
612 }
613
614 /* allocate urbs and transfer buffers */
615 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
616 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
617 if (!urb) {
618 tm6000_uninit_isoc(dev);
619 tm6000_free_urb_buffers(dev);
620 return -ENOMEM;
621 }
622 dev->isoc_ctl.urb[i] = urb;
623
624 urb->transfer_dma = dev->urb_dma[i];
625 dev->isoc_ctl.transfer_buffer[i] = dev->urb_buffer[i];
626
627 usb_fill_bulk_urb(urb, dev->udev, pipe,
628 dev->isoc_ctl.transfer_buffer[i], sb_size,
629 tm6000_irq_callback, dma_q);
630 urb->interval = dev->isoc_in.endp->desc.bInterval;
631 urb->number_of_packets = max_packets;
632 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
633
634 for (j = 0; j < max_packets; j++) {
635 urb->iso_frame_desc[j].offset = size * j;
636 urb->iso_frame_desc[j].length = size;
637 }
638 }
639
640 return 0;
641 }
642
643 static int tm6000_start_thread(struct tm6000_core *dev)
644 {
645 struct tm6000_dmaqueue *dma_q = &dev->vidq;
646 int i;
647
648 dma_q->frame = 0;
649 dma_q->ini_jiffies = jiffies;
650
651 init_waitqueue_head(&dma_q->wq);
652
653 /* submit urbs and enables IRQ */
654 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
655 int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
656 if (rc) {
657 tm6000_err("submit of urb %i failed (error=%i)\n", i,
658 rc);
659 tm6000_uninit_isoc(dev);
660 return rc;
661 }
662 }
663
664 return 0;
665 }
666
667 /* ------------------------------------------------------------------
668 * Videobuf operations
669 * ------------------------------------------------------------------
670 */
671
672 static int
673 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
674 {
675 struct tm6000_fh *fh = vq->priv_data;
676
677 *size = fh->fmt->depth * fh->width * fh->height >> 3;
678 if (0 == *count)
679 *count = TM6000_DEF_BUF;
680
681 if (*count < TM6000_MIN_BUF)
682 *count = TM6000_MIN_BUF;
683
684 while (*size * *count > vid_limit * 1024 * 1024)
685 (*count)--;
686
687 return 0;
688 }
689
690 static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf)
691 {
692 struct tm6000_fh *fh = vq->priv_data;
693 struct tm6000_core *dev = fh->dev;
694 unsigned long flags;
695
696 /* We used to wait for the buffer to finish here, but this didn't work
697 because, as we were keeping the state as VIDEOBUF_QUEUED,
698 videobuf_queue_cancel marked it as finished for us.
699 (Also, it could wedge forever if the hardware was misconfigured.)
700
701 This should be safe; by the time we get here, the buffer isn't
702 queued anymore. If we ever start marking the buffers as
703 VIDEOBUF_ACTIVE, it won't be, though.
704 */
705 spin_lock_irqsave(&dev->slock, flags);
706 if (dev->isoc_ctl.buf == buf)
707 dev->isoc_ctl.buf = NULL;
708 spin_unlock_irqrestore(&dev->slock, flags);
709
710 videobuf_vmalloc_free(&buf->vb);
711 buf->vb.state = VIDEOBUF_NEEDS_INIT;
712 }
713
714 static int
715 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
716 enum v4l2_field field)
717 {
718 struct tm6000_fh *fh = vq->priv_data;
719 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
720 struct tm6000_core *dev = fh->dev;
721 int rc = 0;
722
723 BUG_ON(NULL == fh->fmt);
724
725
726 /* FIXME: It assumes depth=2 */
727 /* The only currently supported format is 16 bits/pixel */
728 buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
729 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
730 return -EINVAL;
731
732 if (buf->fmt != fh->fmt ||
733 buf->vb.width != fh->width ||
734 buf->vb.height != fh->height ||
735 buf->vb.field != field) {
736 buf->fmt = fh->fmt;
737 buf->vb.width = fh->width;
738 buf->vb.height = fh->height;
739 buf->vb.field = field;
740 buf->vb.state = VIDEOBUF_NEEDS_INIT;
741 }
742
743 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
744 rc = videobuf_iolock(vq, &buf->vb, NULL);
745 if (rc != 0)
746 goto fail;
747 }
748
749 if (!dev->isoc_ctl.num_bufs) {
750 rc = tm6000_prepare_isoc(dev);
751 if (rc < 0)
752 goto fail;
753
754 rc = tm6000_start_thread(dev);
755 if (rc < 0)
756 goto fail;
757
758 }
759
760 buf->vb.state = VIDEOBUF_PREPARED;
761 return 0;
762
763 fail:
764 free_buffer(vq, buf);
765 return rc;
766 }
767
768 static void
769 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
770 {
771 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
772 struct tm6000_fh *fh = vq->priv_data;
773 struct tm6000_core *dev = fh->dev;
774 struct tm6000_dmaqueue *vidq = &dev->vidq;
775
776 buf->vb.state = VIDEOBUF_QUEUED;
777 list_add_tail(&buf->vb.queue, &vidq->active);
778 }
779
780 static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
781 {
782 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
783
784 free_buffer(vq, buf);
785 }
786
787 static const struct videobuf_queue_ops tm6000_video_qops = {
788 .buf_setup = buffer_setup,
789 .buf_prepare = buffer_prepare,
790 .buf_queue = buffer_queue,
791 .buf_release = buffer_release,
792 };
793
794 /* ------------------------------------------------------------------
795 * IOCTL handling
796 * ------------------------------------------------------------------
797 */
798
799 static bool is_res_read(struct tm6000_core *dev, struct tm6000_fh *fh)
800 {
801 /* Is the current fh handling it? if so, that's OK */
802 if (dev->resources == fh && dev->is_res_read)
803 return true;
804
805 return false;
806 }
807
808 static bool is_res_streaming(struct tm6000_core *dev, struct tm6000_fh *fh)
809 {
810 /* Is the current fh handling it? if so, that's OK */
811 if (dev->resources == fh)
812 return true;
813
814 return false;
815 }
816
817 static bool res_get(struct tm6000_core *dev, struct tm6000_fh *fh,
818 bool is_res_read)
819 {
820 /* Is the current fh handling it? if so, that's OK */
821 if (dev->resources == fh && dev->is_res_read == is_res_read)
822 return true;
823
824 /* is it free? */
825 if (dev->resources)
826 return false;
827
828 /* grab it */
829 dev->resources = fh;
830 dev->is_res_read = is_res_read;
831 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
832 return true;
833 }
834
835 static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
836 {
837 /* Is the current fh handling it? if so, that's OK */
838 if (dev->resources != fh)
839 return;
840
841 dev->resources = NULL;
842 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
843 }
844
845 /* ------------------------------------------------------------------
846 * IOCTL vidioc handling
847 * ------------------------------------------------------------------
848 */
849 static int vidioc_querycap(struct file *file, void *priv,
850 struct v4l2_capability *cap)
851 {
852 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
853
854 strscpy(cap->driver, "tm6000", sizeof(cap->driver));
855 strscpy(cap->card, "Trident TVMaster TM5600/6000/6010",
856 sizeof(cap->card));
857 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
858 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
859 V4L2_CAP_DEVICE_CAPS;
860 if (dev->tuner_type != TUNER_ABSENT)
861 cap->capabilities |= V4L2_CAP_TUNER;
862 if (dev->caps.has_radio)
863 cap->capabilities |= V4L2_CAP_RADIO;
864
865 return 0;
866 }
867
868 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
869 struct v4l2_fmtdesc *f)
870 {
871 if (f->index >= ARRAY_SIZE(format))
872 return -EINVAL;
873
874 f->pixelformat = format[f->index].fourcc;
875 return 0;
876 }
877
878 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
879 struct v4l2_format *f)
880 {
881 struct tm6000_fh *fh = priv;
882
883 f->fmt.pix.width = fh->width;
884 f->fmt.pix.height = fh->height;
885 f->fmt.pix.field = fh->vb_vidq.field;
886 f->fmt.pix.pixelformat = fh->fmt->fourcc;
887 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
888 f->fmt.pix.bytesperline =
889 (f->fmt.pix.width * fh->fmt->depth) >> 3;
890 f->fmt.pix.sizeimage =
891 f->fmt.pix.height * f->fmt.pix.bytesperline;
892
893 return 0;
894 }
895
896 static struct tm6000_fmt *format_by_fourcc(unsigned int fourcc)
897 {
898 unsigned int i;
899
900 for (i = 0; i < ARRAY_SIZE(format); i++)
901 if (format[i].fourcc == fourcc)
902 return format+i;
903 return NULL;
904 }
905
906 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
907 struct v4l2_format *f)
908 {
909 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
910 struct tm6000_fmt *fmt;
911 enum v4l2_field field;
912
913 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
914 if (NULL == fmt) {
915 dprintk(dev, 2, "Fourcc format (0x%08x) invalid.\n",
916 f->fmt.pix.pixelformat);
917 return -EINVAL;
918 }
919
920 field = f->fmt.pix.field;
921
922 field = V4L2_FIELD_INTERLACED;
923
924 tm6000_get_std_res(dev);
925
926 f->fmt.pix.width = dev->width;
927 f->fmt.pix.height = dev->height;
928
929 f->fmt.pix.width &= ~0x01;
930
931 f->fmt.pix.field = field;
932
933 f->fmt.pix.bytesperline =
934 (f->fmt.pix.width * fmt->depth) >> 3;
935 f->fmt.pix.sizeimage =
936 f->fmt.pix.height * f->fmt.pix.bytesperline;
937 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
938
939 return 0;
940 }
941
942 /*FIXME: This seems to be generic enough to be at videodev2 */
943 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
944 struct v4l2_format *f)
945 {
946 struct tm6000_fh *fh = priv;
947 struct tm6000_core *dev = fh->dev;
948 int ret = vidioc_try_fmt_vid_cap(file, fh, f);
949 if (ret < 0)
950 return ret;
951
952 fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
953 fh->width = f->fmt.pix.width;
954 fh->height = f->fmt.pix.height;
955 fh->vb_vidq.field = f->fmt.pix.field;
956 fh->type = f->type;
957
958 dev->fourcc = f->fmt.pix.pixelformat;
959
960 tm6000_set_fourcc_format(dev);
961
962 return 0;
963 }
964
965 static int vidioc_reqbufs(struct file *file, void *priv,
966 struct v4l2_requestbuffers *p)
967 {
968 struct tm6000_fh *fh = priv;
969
970 return videobuf_reqbufs(&fh->vb_vidq, p);
971 }
972
973 static int vidioc_querybuf(struct file *file, void *priv,
974 struct v4l2_buffer *p)
975 {
976 struct tm6000_fh *fh = priv;
977
978 return videobuf_querybuf(&fh->vb_vidq, p);
979 }
980
981 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
982 {
983 struct tm6000_fh *fh = priv;
984
985 return videobuf_qbuf(&fh->vb_vidq, p);
986 }
987
988 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
989 {
990 struct tm6000_fh *fh = priv;
991
992 return videobuf_dqbuf(&fh->vb_vidq, p,
993 file->f_flags & O_NONBLOCK);
994 }
995
996 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
997 {
998 struct tm6000_fh *fh = priv;
999 struct tm6000_core *dev = fh->dev;
1000
1001 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1002 return -EINVAL;
1003 if (i != fh->type)
1004 return -EINVAL;
1005
1006 if (!res_get(dev, fh, false))
1007 return -EBUSY;
1008 return videobuf_streamon(&fh->vb_vidq);
1009 }
1010
1011 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
1012 {
1013 struct tm6000_fh *fh = priv;
1014 struct tm6000_core *dev = fh->dev;
1015
1016 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1017 return -EINVAL;
1018
1019 if (i != fh->type)
1020 return -EINVAL;
1021
1022 videobuf_streamoff(&fh->vb_vidq);
1023 res_free(dev, fh);
1024
1025 return 0;
1026 }
1027
1028 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1029 {
1030 int rc = 0;
1031 struct tm6000_fh *fh = priv;
1032 struct tm6000_core *dev = fh->dev;
1033
1034 dev->norm = norm;
1035 rc = tm6000_init_analog_mode(dev);
1036
1037 fh->width = dev->width;
1038 fh->height = dev->height;
1039
1040 if (rc < 0)
1041 return rc;
1042
1043 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->norm);
1044
1045 return 0;
1046 }
1047
1048 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1049 {
1050 struct tm6000_fh *fh = priv;
1051 struct tm6000_core *dev = fh->dev;
1052
1053 *norm = dev->norm;
1054 return 0;
1055 }
1056
1057 static const char *iname[] = {
1058 [TM6000_INPUT_TV] = "Television",
1059 [TM6000_INPUT_COMPOSITE1] = "Composite 1",
1060 [TM6000_INPUT_COMPOSITE2] = "Composite 2",
1061 [TM6000_INPUT_SVIDEO] = "S-Video",
1062 };
1063
1064 static int vidioc_enum_input(struct file *file, void *priv,
1065 struct v4l2_input *i)
1066 {
1067 struct tm6000_fh *fh = priv;
1068 struct tm6000_core *dev = fh->dev;
1069 unsigned int n;
1070
1071 n = i->index;
1072 if (n >= 3)
1073 return -EINVAL;
1074
1075 if (!dev->vinput[n].type)
1076 return -EINVAL;
1077
1078 i->index = n;
1079
1080 if (dev->vinput[n].type == TM6000_INPUT_TV)
1081 i->type = V4L2_INPUT_TYPE_TUNER;
1082 else
1083 i->type = V4L2_INPUT_TYPE_CAMERA;
1084
1085 strscpy(i->name, iname[dev->vinput[n].type], sizeof(i->name));
1086
1087 i->std = TM6000_STD;
1088
1089 return 0;
1090 }
1091
1092 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1093 {
1094 struct tm6000_fh *fh = priv;
1095 struct tm6000_core *dev = fh->dev;
1096
1097 *i = dev->input;
1098
1099 return 0;
1100 }
1101
1102 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1103 {
1104 struct tm6000_fh *fh = priv;
1105 struct tm6000_core *dev = fh->dev;
1106 int rc = 0;
1107
1108 if (i >= 3)
1109 return -EINVAL;
1110 if (!dev->vinput[i].type)
1111 return -EINVAL;
1112
1113 dev->input = i;
1114
1115 rc = vidioc_s_std(file, priv, dev->norm);
1116
1117 return rc;
1118 }
1119
1120 /* --- controls ---------------------------------------------- */
1121
1122 static int tm6000_s_ctrl(struct v4l2_ctrl *ctrl)
1123 {
1124 struct tm6000_core *dev = container_of(ctrl->handler, struct tm6000_core, ctrl_handler);
1125 u8 val = ctrl->val;
1126
1127 switch (ctrl->id) {
1128 case V4L2_CID_CONTRAST:
1129 tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val);
1130 return 0;
1131 case V4L2_CID_BRIGHTNESS:
1132 tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val);
1133 return 0;
1134 case V4L2_CID_SATURATION:
1135 tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val);
1136 return 0;
1137 case V4L2_CID_HUE:
1138 tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val);
1139 return 0;
1140 }
1141 return -EINVAL;
1142 }
1143
1144 static const struct v4l2_ctrl_ops tm6000_ctrl_ops = {
1145 .s_ctrl = tm6000_s_ctrl,
1146 };
1147
1148 static int tm6000_radio_s_ctrl(struct v4l2_ctrl *ctrl)
1149 {
1150 struct tm6000_core *dev = container_of(ctrl->handler,
1151 struct tm6000_core, radio_ctrl_handler);
1152 u8 val = ctrl->val;
1153
1154 switch (ctrl->id) {
1155 case V4L2_CID_AUDIO_MUTE:
1156 dev->ctl_mute = val;
1157 tm6000_tvaudio_set_mute(dev, val);
1158 return 0;
1159 case V4L2_CID_AUDIO_VOLUME:
1160 dev->ctl_volume = val;
1161 tm6000_set_volume(dev, val);
1162 return 0;
1163 }
1164 return -EINVAL;
1165 }
1166
1167 static const struct v4l2_ctrl_ops tm6000_radio_ctrl_ops = {
1168 .s_ctrl = tm6000_radio_s_ctrl,
1169 };
1170
1171 static int vidioc_g_tuner(struct file *file, void *priv,
1172 struct v4l2_tuner *t)
1173 {
1174 struct tm6000_fh *fh = priv;
1175 struct tm6000_core *dev = fh->dev;
1176
1177 if (UNSET == dev->tuner_type)
1178 return -ENOTTY;
1179 if (0 != t->index)
1180 return -EINVAL;
1181
1182 strscpy(t->name, "Television", sizeof(t->name));
1183 t->type = V4L2_TUNER_ANALOG_TV;
1184 t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO;
1185 t->rangehigh = 0xffffffffUL;
1186 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1187
1188 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1189
1190 t->audmode = dev->amode;
1191
1192 return 0;
1193 }
1194
1195 static int vidioc_s_tuner(struct file *file, void *priv,
1196 const struct v4l2_tuner *t)
1197 {
1198 struct tm6000_fh *fh = priv;
1199 struct tm6000_core *dev = fh->dev;
1200
1201 if (UNSET == dev->tuner_type)
1202 return -ENOTTY;
1203 if (0 != t->index)
1204 return -EINVAL;
1205
1206 if (t->audmode > V4L2_TUNER_MODE_STEREO)
1207 dev->amode = V4L2_TUNER_MODE_STEREO;
1208 else
1209 dev->amode = t->audmode;
1210 dprintk(dev, 3, "audio mode: %x\n", t->audmode);
1211
1212 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1213
1214 return 0;
1215 }
1216
1217 static int vidioc_g_frequency(struct file *file, void *priv,
1218 struct v4l2_frequency *f)
1219 {
1220 struct tm6000_fh *fh = priv;
1221 struct tm6000_core *dev = fh->dev;
1222
1223 if (UNSET == dev->tuner_type)
1224 return -ENOTTY;
1225 if (f->tuner)
1226 return -EINVAL;
1227
1228 f->frequency = dev->freq;
1229
1230 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
1231
1232 return 0;
1233 }
1234
1235 static int vidioc_s_frequency(struct file *file, void *priv,
1236 const struct v4l2_frequency *f)
1237 {
1238 struct tm6000_fh *fh = priv;
1239 struct tm6000_core *dev = fh->dev;
1240
1241 if (UNSET == dev->tuner_type)
1242 return -ENOTTY;
1243 if (f->tuner != 0)
1244 return -EINVAL;
1245
1246 dev->freq = f->frequency;
1247 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1248
1249 return 0;
1250 }
1251
1252 static int radio_g_tuner(struct file *file, void *priv,
1253 struct v4l2_tuner *t)
1254 {
1255 struct tm6000_fh *fh = file->private_data;
1256 struct tm6000_core *dev = fh->dev;
1257
1258 if (0 != t->index)
1259 return -EINVAL;
1260
1261 memset(t, 0, sizeof(*t));
1262 strscpy(t->name, "Radio", sizeof(t->name));
1263 t->type = V4L2_TUNER_RADIO;
1264 t->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
1265 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1266 t->audmode = V4L2_TUNER_MODE_STEREO;
1267
1268 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1269
1270 return 0;
1271 }
1272
1273 static int radio_s_tuner(struct file *file, void *priv,
1274 const struct v4l2_tuner *t)
1275 {
1276 struct tm6000_fh *fh = file->private_data;
1277 struct tm6000_core *dev = fh->dev;
1278
1279 if (0 != t->index)
1280 return -EINVAL;
1281 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1282 return 0;
1283 }
1284
1285 /* ------------------------------------------------------------------
1286 File operations for the device
1287 ------------------------------------------------------------------*/
1288
1289 static int __tm6000_open(struct file *file)
1290 {
1291 struct video_device *vdev = video_devdata(file);
1292 struct tm6000_core *dev = video_drvdata(file);
1293 struct tm6000_fh *fh;
1294 enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1295 int rc;
1296 int radio = 0;
1297
1298 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
1299 video_device_node_name(vdev));
1300
1301 switch (vdev->vfl_type) {
1302 case VFL_TYPE_VIDEO:
1303 type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1304 break;
1305 case VFL_TYPE_VBI:
1306 type = V4L2_BUF_TYPE_VBI_CAPTURE;
1307 break;
1308 case VFL_TYPE_RADIO:
1309 radio = 1;
1310 break;
1311 default:
1312 return -EINVAL;
1313 }
1314
1315 /* If more than one user, mutex should be added */
1316 dev->users++;
1317
1318 dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
1319 video_device_node_name(vdev), v4l2_type_names[type],
1320 dev->users);
1321
1322 /* allocate + initialize per filehandle data */
1323 fh = kzalloc(sizeof(*fh), GFP_KERNEL);
1324 if (NULL == fh) {
1325 dev->users--;
1326 return -ENOMEM;
1327 }
1328
1329 v4l2_fh_init(&fh->fh, vdev);
1330 file->private_data = fh;
1331 fh->dev = dev;
1332 fh->radio = radio;
1333 dev->radio = radio;
1334 fh->type = type;
1335 dev->fourcc = format[0].fourcc;
1336
1337 fh->fmt = format_by_fourcc(dev->fourcc);
1338
1339 tm6000_get_std_res(dev);
1340
1341 fh->width = dev->width;
1342 fh->height = dev->height;
1343
1344 dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=%p, dev=%p, dev->vidq=%p\n",
1345 fh, dev, &dev->vidq);
1346 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty queued=%d\n",
1347 list_empty(&dev->vidq.queued));
1348 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty active=%d\n",
1349 list_empty(&dev->vidq.active));
1350
1351 /* initialize hardware on analog mode */
1352 rc = tm6000_init_analog_mode(dev);
1353 if (rc < 0) {
1354 v4l2_fh_exit(&fh->fh);
1355 kfree(fh);
1356 return rc;
1357 }
1358
1359 dev->mode = TM6000_MODE_ANALOG;
1360
1361 if (!fh->radio) {
1362 videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
1363 NULL, &dev->slock,
1364 fh->type,
1365 V4L2_FIELD_INTERLACED,
1366 sizeof(struct tm6000_buffer), fh, &dev->lock);
1367 } else {
1368 dprintk(dev, V4L2_DEBUG_OPEN, "video_open: setting radio device\n");
1369 tm6000_set_audio_rinput(dev);
1370 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1371 tm6000_prepare_isoc(dev);
1372 tm6000_start_thread(dev);
1373 }
1374 v4l2_fh_add(&fh->fh);
1375
1376 return 0;
1377 }
1378
1379 static int tm6000_open(struct file *file)
1380 {
1381 struct video_device *vdev = video_devdata(file);
1382 int res;
1383
1384 mutex_lock(vdev->lock);
1385 res = __tm6000_open(file);
1386 mutex_unlock(vdev->lock);
1387 return res;
1388 }
1389
1390 static ssize_t
1391 tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
1392 {
1393 struct tm6000_fh *fh = file->private_data;
1394 struct tm6000_core *dev = fh->dev;
1395
1396 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1397 int res;
1398
1399 if (!res_get(fh->dev, fh, true))
1400 return -EBUSY;
1401
1402 if (mutex_lock_interruptible(&dev->lock))
1403 return -ERESTARTSYS;
1404 res = videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
1405 file->f_flags & O_NONBLOCK);
1406 mutex_unlock(&dev->lock);
1407 return res;
1408 }
1409 return 0;
1410 }
1411
1412 static __poll_t
1413 __tm6000_poll(struct file *file, struct poll_table_struct *wait)
1414 {
1415 __poll_t req_events = poll_requested_events(wait);
1416 struct tm6000_fh *fh = file->private_data;
1417 struct tm6000_buffer *buf;
1418 __poll_t res = 0;
1419
1420 if (v4l2_event_pending(&fh->fh))
1421 res = EPOLLPRI;
1422 else if (req_events & EPOLLPRI)
1423 poll_wait(file, &fh->fh.wait, wait);
1424 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1425 return res | EPOLLERR;
1426
1427 if (!!is_res_streaming(fh->dev, fh))
1428 return res | EPOLLERR;
1429
1430 if (!is_res_read(fh->dev, fh)) {
1431 /* streaming capture */
1432 if (list_empty(&fh->vb_vidq.stream))
1433 return res | EPOLLERR;
1434 buf = list_entry(fh->vb_vidq.stream.next, struct tm6000_buffer, vb.stream);
1435 poll_wait(file, &buf->vb.done, wait);
1436 if (buf->vb.state == VIDEOBUF_DONE ||
1437 buf->vb.state == VIDEOBUF_ERROR)
1438 return res | EPOLLIN | EPOLLRDNORM;
1439 } else if (req_events & (EPOLLIN | EPOLLRDNORM)) {
1440 /* read() capture */
1441 return res | videobuf_poll_stream(file, &fh->vb_vidq, wait);
1442 }
1443 return res;
1444 }
1445
1446 static __poll_t tm6000_poll(struct file *file, struct poll_table_struct *wait)
1447 {
1448 struct tm6000_fh *fh = file->private_data;
1449 struct tm6000_core *dev = fh->dev;
1450 __poll_t res;
1451
1452 mutex_lock(&dev->lock);
1453 res = __tm6000_poll(file, wait);
1454 mutex_unlock(&dev->lock);
1455 return res;
1456 }
1457
1458 static int tm6000_release(struct file *file)
1459 {
1460 struct tm6000_fh *fh = file->private_data;
1461 struct tm6000_core *dev = fh->dev;
1462 struct video_device *vdev = video_devdata(file);
1463
1464 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
1465 video_device_node_name(vdev), dev->users);
1466
1467 mutex_lock(&dev->lock);
1468 dev->users--;
1469
1470 res_free(dev, fh);
1471
1472 if (!dev->users) {
1473 tm6000_uninit_isoc(dev);
1474
1475 /* Stop interrupt USB pipe */
1476 tm6000_ir_int_stop(dev);
1477
1478 usb_reset_configuration(dev->udev);
1479
1480 if (dev->int_in.endp)
1481 usb_set_interface(dev->udev,
1482 dev->isoc_in.bInterfaceNumber, 2);
1483 else
1484 usb_set_interface(dev->udev,
1485 dev->isoc_in.bInterfaceNumber, 0);
1486
1487 /* Start interrupt USB pipe */
1488 tm6000_ir_int_start(dev);
1489
1490 if (!fh->radio)
1491 videobuf_mmap_free(&fh->vb_vidq);
1492 }
1493 v4l2_fh_del(&fh->fh);
1494 v4l2_fh_exit(&fh->fh);
1495 kfree(fh);
1496 mutex_unlock(&dev->lock);
1497
1498 return 0;
1499 }
1500
1501 static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
1502 {
1503 struct tm6000_fh *fh = file->private_data;
1504 struct tm6000_core *dev = fh->dev;
1505 int res;
1506
1507 if (mutex_lock_interruptible(&dev->lock))
1508 return -ERESTARTSYS;
1509 res = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1510 mutex_unlock(&dev->lock);
1511 return res;
1512 }
1513
1514 static const struct v4l2_file_operations tm6000_fops = {
1515 .owner = THIS_MODULE,
1516 .open = tm6000_open,
1517 .release = tm6000_release,
1518 .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
1519 .read = tm6000_read,
1520 .poll = tm6000_poll,
1521 .mmap = tm6000_mmap,
1522 };
1523
1524 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1525 .vidioc_querycap = vidioc_querycap,
1526 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1527 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1528 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1529 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1530 .vidioc_s_std = vidioc_s_std,
1531 .vidioc_g_std = vidioc_g_std,
1532 .vidioc_enum_input = vidioc_enum_input,
1533 .vidioc_g_input = vidioc_g_input,
1534 .vidioc_s_input = vidioc_s_input,
1535 .vidioc_g_tuner = vidioc_g_tuner,
1536 .vidioc_s_tuner = vidioc_s_tuner,
1537 .vidioc_g_frequency = vidioc_g_frequency,
1538 .vidioc_s_frequency = vidioc_s_frequency,
1539 .vidioc_streamon = vidioc_streamon,
1540 .vidioc_streamoff = vidioc_streamoff,
1541 .vidioc_reqbufs = vidioc_reqbufs,
1542 .vidioc_querybuf = vidioc_querybuf,
1543 .vidioc_qbuf = vidioc_qbuf,
1544 .vidioc_dqbuf = vidioc_dqbuf,
1545 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1546 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1547 };
1548
1549 static struct video_device tm6000_template = {
1550 .name = "tm6000",
1551 .fops = &tm6000_fops,
1552 .ioctl_ops = &video_ioctl_ops,
1553 .release = video_device_release_empty,
1554 .tvnorms = TM6000_STD,
1555 };
1556
1557 static const struct v4l2_file_operations radio_fops = {
1558 .owner = THIS_MODULE,
1559 .open = tm6000_open,
1560 .poll = v4l2_ctrl_poll,
1561 .release = tm6000_release,
1562 .unlocked_ioctl = video_ioctl2,
1563 };
1564
1565 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1566 .vidioc_querycap = vidioc_querycap,
1567 .vidioc_g_tuner = radio_g_tuner,
1568 .vidioc_s_tuner = radio_s_tuner,
1569 .vidioc_g_frequency = vidioc_g_frequency,
1570 .vidioc_s_frequency = vidioc_s_frequency,
1571 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1572 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1573 };
1574
1575 static struct video_device tm6000_radio_template = {
1576 .name = "tm6000",
1577 .fops = &radio_fops,
1578 .ioctl_ops = &radio_ioctl_ops,
1579 };
1580
1581 /* -----------------------------------------------------------------
1582 * Initialization and module stuff
1583 * ------------------------------------------------------------------
1584 */
1585
1586 static void vdev_init(struct tm6000_core *dev,
1587 struct video_device *vfd,
1588 const struct video_device
1589 *template, const char *type_name)
1590 {
1591 *vfd = *template;
1592 vfd->v4l2_dev = &dev->v4l2_dev;
1593 vfd->release = video_device_release_empty;
1594 vfd->lock = &dev->lock;
1595
1596 snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
1597
1598 video_set_drvdata(vfd, dev);
1599 }
1600
1601 int tm6000_v4l2_register(struct tm6000_core *dev)
1602 {
1603 int ret = 0;
1604
1605 v4l2_ctrl_handler_init(&dev->ctrl_handler, 6);
1606 v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 2);
1607 v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
1608 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
1609 v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
1610 V4L2_CID_AUDIO_VOLUME, -15, 15, 1, 0);
1611 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1612 V4L2_CID_BRIGHTNESS, 0, 255, 1, 54);
1613 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1614 V4L2_CID_CONTRAST, 0, 255, 1, 119);
1615 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1616 V4L2_CID_SATURATION, 0, 255, 1, 112);
1617 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1618 V4L2_CID_HUE, -128, 127, 1, 0);
1619 v4l2_ctrl_add_handler(&dev->ctrl_handler,
1620 &dev->radio_ctrl_handler, NULL, false);
1621
1622 if (dev->radio_ctrl_handler.error)
1623 ret = dev->radio_ctrl_handler.error;
1624 if (!ret && dev->ctrl_handler.error)
1625 ret = dev->ctrl_handler.error;
1626 if (ret)
1627 goto free_ctrl;
1628
1629 vdev_init(dev, &dev->vfd, &tm6000_template, "video");
1630
1631 dev->vfd.ctrl_handler = &dev->ctrl_handler;
1632 dev->vfd.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
1633 V4L2_CAP_READWRITE;
1634 if (dev->tuner_type != TUNER_ABSENT)
1635 dev->vfd.device_caps |= V4L2_CAP_TUNER;
1636
1637 /* init video dma queues */
1638 INIT_LIST_HEAD(&dev->vidq.active);
1639 INIT_LIST_HEAD(&dev->vidq.queued);
1640
1641 ret = video_register_device(&dev->vfd, VFL_TYPE_VIDEO, video_nr);
1642
1643 if (ret < 0) {
1644 printk(KERN_INFO "%s: can't register video device\n",
1645 dev->name);
1646 goto free_ctrl;
1647 }
1648
1649 printk(KERN_INFO "%s: registered device %s\n",
1650 dev->name, video_device_node_name(&dev->vfd));
1651
1652 if (dev->caps.has_radio) {
1653 vdev_init(dev, &dev->radio_dev, &tm6000_radio_template,
1654 "radio");
1655 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
1656 dev->radio_dev.device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER;
1657 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
1658 radio_nr);
1659 if (ret < 0) {
1660 printk(KERN_INFO "%s: can't register radio device\n",
1661 dev->name);
1662 goto unreg_video;
1663 }
1664
1665 printk(KERN_INFO "%s: registered device %s\n",
1666 dev->name, video_device_node_name(&dev->radio_dev));
1667 }
1668
1669 printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
1670 return ret;
1671
1672 unreg_video:
1673 video_unregister_device(&dev->vfd);
1674 free_ctrl:
1675 v4l2_ctrl_handler_free(&dev->ctrl_handler);
1676 v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1677 return ret;
1678 }
1679
1680 int tm6000_v4l2_unregister(struct tm6000_core *dev)
1681 {
1682 video_unregister_device(&dev->vfd);
1683
1684 /* if URB buffers are still allocated free them now */
1685 tm6000_free_urb_buffers(dev);
1686
1687 video_unregister_device(&dev->radio_dev);
1688 return 0;
1689 }
1690
1691 int tm6000_v4l2_exit(void)
1692 {
1693 return 0;
1694 }
1695
1696 module_param(video_nr, int, 0);
1697 MODULE_PARM_DESC(video_nr, "Allow changing video device number");
1698
1699 module_param_named(debug, tm6000_debug, int, 0444);
1700 MODULE_PARM_DESC(debug, "activates debug info");
1701
1702 module_param(vid_limit, int, 0644);
1703 MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
1704
1705 module_param(keep_urb, bool, 0);
1706 MODULE_PARM_DESC(keep_urb, "Keep urb buffers allocated even when the device is closed by the user");
Linux with added FPC-III support