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perf tools: Don't clone maps from parent when synthesizing forks
[linux/fpc-iii.git] / drivers / media / usb / tm6000 / tm6000-video.c
blob7d268f2404e1921ea6187fb2246e9233ad7ba6dc
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 .name = "4:2:2, packed, YVY2",
56 .fourcc = V4L2_PIX_FMT_YUYV,
57 .depth = 16,
58 }, {
59 .name = "4:2:2, packed, UYVY",
60 .fourcc = V4L2_PIX_FMT_UYVY,
61 .depth = 16,
62 }, {
63 .name = "A/V + VBI mux packet",
64 .fourcc = V4L2_PIX_FMT_TM6000,
65 .depth = 16,
66 }
67 };
68
69 /* ------------------------------------------------------------------
70 * DMA and thread functions
71 * ------------------------------------------------------------------
72 */
73
74 #define norm_maxw(a) 720
75 #define norm_maxh(a) 576
76
77 #define norm_minw(a) norm_maxw(a)
78 #define norm_minh(a) norm_maxh(a)
79
80 /*
81 * video-buf generic routine to get the next available buffer
82 */
83 static inline void get_next_buf(struct tm6000_dmaqueue *dma_q,
84 struct tm6000_buffer **buf)
85 {
86 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
87
88 if (list_empty(&dma_q->active)) {
89 dprintk(dev, V4L2_DEBUG_QUEUE, "No active queue to serve\n");
90 *buf = NULL;
91 return;
92 }
93
94 *buf = list_entry(dma_q->active.next,
95 struct tm6000_buffer, vb.queue);
96 }
97
98 /*
99 * Announces that a buffer were filled and request the next
100 */
101 static inline void buffer_filled(struct tm6000_core *dev,
102 struct tm6000_dmaqueue *dma_q,
103 struct tm6000_buffer *buf)
104 {
105 /* Advice that buffer was filled */
106 dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n", buf, buf->vb.i);
107 buf->vb.state = VIDEOBUF_DONE;
108 buf->vb.field_count++;
109 v4l2_get_timestamp(&buf->vb.ts);
110
111 list_del(&buf->vb.queue);
112 wake_up(&buf->vb.done);
113 }
114
115 /*
116 * Identify the tm5600/6000 buffer header type and properly handles
117 */
118 static int copy_streams(u8 *data, unsigned long len,
119 struct urb *urb)
120 {
121 struct tm6000_dmaqueue *dma_q = urb->context;
122 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
123 u8 *ptr = data, *endp = data+len;
124 unsigned long header = 0;
125 int rc = 0;
126 unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
127 struct tm6000_buffer *vbuf = NULL;
128 char *voutp = NULL;
129 unsigned int linewidth;
130
131 if (!dev->radio) {
132 /* get video buffer */
133 get_next_buf(dma_q, &vbuf);
134
135 if (!vbuf)
136 return rc;
137 voutp = videobuf_to_vmalloc(&vbuf->vb);
138
139 if (!voutp)
140 return 0;
141 }
142
143 for (ptr = data; ptr < endp;) {
144 if (!dev->isoc_ctl.cmd) {
145 /* Header */
146 if (dev->isoc_ctl.tmp_buf_len > 0) {
147 /* from last urb or packet */
148 header = dev->isoc_ctl.tmp_buf;
149 if (4 - dev->isoc_ctl.tmp_buf_len > 0) {
150 memcpy((u8 *)&header +
151 dev->isoc_ctl.tmp_buf_len,
152 ptr,
153 4 - dev->isoc_ctl.tmp_buf_len);
154 ptr += 4 - dev->isoc_ctl.tmp_buf_len;
155 }
156 dev->isoc_ctl.tmp_buf_len = 0;
157 } else {
158 if (ptr + 3 >= endp) {
159 /* have incomplete header */
160 dev->isoc_ctl.tmp_buf_len = endp - ptr;
161 memcpy(&dev->isoc_ctl.tmp_buf, ptr,
162 dev->isoc_ctl.tmp_buf_len);
163 return rc;
164 }
165 /* Seek for sync */
166 for (; ptr < endp - 3; ptr++) {
167 if (*(ptr + 3) == 0x47)
168 break;
169 }
170 /* Get message header */
171 header = *(unsigned long *)ptr;
172 ptr += 4;
173 }
174
175 /* split the header fields */
176 size = ((header & 0x7e) << 1);
177 if (size > 0)
178 size -= 4;
179 block = (header >> 7) & 0xf;
180 field = (header >> 11) & 0x1;
181 line = (header >> 12) & 0x1ff;
182 cmd = (header >> 21) & 0x7;
183 /* Validates haeder fields */
184 if (size > TM6000_URB_MSG_LEN)
185 size = TM6000_URB_MSG_LEN;
186 pktsize = TM6000_URB_MSG_LEN;
187 /*
188 * calculate position in buffer and change the buffer
189 */
190 switch (cmd) {
191 case TM6000_URB_MSG_VIDEO:
192 if (!dev->radio) {
193 if ((dev->isoc_ctl.vfield != field) &&
194 (field == 1)) {
195 /*
196 * Announces that a new buffer
197 * were filled
198 */
199 buffer_filled(dev, dma_q, vbuf);
200 dprintk(dev, V4L2_DEBUG_ISOC,
201 "new buffer filled\n");
202 get_next_buf(dma_q, &vbuf);
203 if (!vbuf)
204 return rc;
205 voutp = videobuf_to_vmalloc(&vbuf->vb);
206 if (!voutp)
207 return rc;
208 memset(voutp, 0, vbuf->vb.size);
209 }
210 linewidth = vbuf->vb.width << 1;
211 pos = ((line << 1) - field - 1) *
212 linewidth + block * TM6000_URB_MSG_LEN;
213 /* Don't allow to write out of the buffer */
214 if (pos + size > vbuf->vb.size)
215 cmd = TM6000_URB_MSG_ERR;
216 dev->isoc_ctl.vfield = field;
217 }
218 break;
219 case TM6000_URB_MSG_VBI:
220 break;
221 case TM6000_URB_MSG_AUDIO:
222 case TM6000_URB_MSG_PTS:
223 size = pktsize; /* Size is always 180 bytes */
224 break;
225 }
226 } else {
227 /* Continue the last copy */
228 cmd = dev->isoc_ctl.cmd;
229 size = dev->isoc_ctl.size;
230 pos = dev->isoc_ctl.pos;
231 pktsize = dev->isoc_ctl.pktsize;
232 field = dev->isoc_ctl.field;
233 }
234 cpysize = (endp - ptr > size) ? size : endp - ptr;
235 if (cpysize) {
236 /* copy data in different buffers */
237 switch (cmd) {
238 case TM6000_URB_MSG_VIDEO:
239 /* Fills video buffer */
240 if (vbuf)
241 memcpy(&voutp[pos], ptr, cpysize);
242 break;
243 case TM6000_URB_MSG_AUDIO: {
244 int i;
245 for (i = 0; i < cpysize; i += 2)
246 swab16s((u16 *)(ptr + i));
247
248 tm6000_call_fillbuf(dev, TM6000_AUDIO, ptr, cpysize);
249 break;
250 }
251 case TM6000_URB_MSG_VBI:
252 /* Need some code to copy vbi buffer */
253 break;
254 case TM6000_URB_MSG_PTS: {
255 /* Need some code to copy pts */
256 u32 pts;
257 pts = *(u32 *)ptr;
258 dprintk(dev, V4L2_DEBUG_ISOC, "field %d, PTS %x",
259 field, pts);
260 break;
261 }
262 }
263 }
264 if (ptr + pktsize > endp) {
265 /*
266 * End of URB packet, but cmd processing is not
267 * complete. Preserve the state for a next packet
268 */
269 dev->isoc_ctl.pos = pos + cpysize;
270 dev->isoc_ctl.size = size - cpysize;
271 dev->isoc_ctl.cmd = cmd;
272 dev->isoc_ctl.field = field;
273 dev->isoc_ctl.pktsize = pktsize - (endp - ptr);
274 ptr += endp - ptr;
275 } else {
276 dev->isoc_ctl.cmd = 0;
277 ptr += pktsize;
278 }
279 }
280 return 0;
281 }
282
283 /*
284 * Identify the tm5600/6000 buffer header type and properly handles
285 */
286 static int copy_multiplexed(u8 *ptr, unsigned long len,
287 struct urb *urb)
288 {
289 struct tm6000_dmaqueue *dma_q = urb->context;
290 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
291 unsigned int pos = dev->isoc_ctl.pos, cpysize;
292 int rc = 1;
293 struct tm6000_buffer *buf;
294 char *outp = NULL;
295
296 get_next_buf(dma_q, &buf);
297 if (buf)
298 outp = videobuf_to_vmalloc(&buf->vb);
299
300 if (!outp)
301 return 0;
302
303 while (len > 0) {
304 cpysize = min(len, buf->vb.size-pos);
305 memcpy(&outp[pos], ptr, cpysize);
306 pos += cpysize;
307 ptr += cpysize;
308 len -= cpysize;
309 if (pos >= buf->vb.size) {
310 pos = 0;
311 /* Announces that a new buffer were filled */
312 buffer_filled(dev, dma_q, buf);
313 dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
314 get_next_buf(dma_q, &buf);
315 if (!buf)
316 break;
317 outp = videobuf_to_vmalloc(&(buf->vb));
318 if (!outp)
319 return rc;
320 pos = 0;
321 }
322 }
323
324 dev->isoc_ctl.pos = pos;
325 return rc;
326 }
327
328 static inline void print_err_status(struct tm6000_core *dev,
329 int packet, int status)
330 {
331 char *errmsg = "Unknown";
332
333 switch (status) {
334 case -ENOENT:
335 errmsg = "unlinked synchronously";
336 break;
337 case -ECONNRESET:
338 errmsg = "unlinked asynchronously";
339 break;
340 case -ENOSR:
341 errmsg = "Buffer error (overrun)";
342 break;
343 case -EPIPE:
344 errmsg = "Stalled (device not responding)";
345 break;
346 case -EOVERFLOW:
347 errmsg = "Babble (bad cable?)";
348 break;
349 case -EPROTO:
350 errmsg = "Bit-stuff error (bad cable?)";
351 break;
352 case -EILSEQ:
353 errmsg = "CRC/Timeout (could be anything)";
354 break;
355 case -ETIME:
356 errmsg = "Device does not respond";
357 break;
358 }
359 if (packet < 0) {
360 dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
361 status, errmsg);
362 } else {
363 dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n",
364 packet, status, errmsg);
365 }
366 }
367
368
369 /*
370 * Controls the isoc copy of each urb packet
371 */
372 static inline int tm6000_isoc_copy(struct urb *urb)
373 {
374 struct tm6000_dmaqueue *dma_q = urb->context;
375 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
376 int i, len = 0, rc = 1, status;
377 char *p;
378
379 if (urb->status < 0) {
380 print_err_status(dev, -1, urb->status);
381 return 0;
382 }
383
384 for (i = 0; i < urb->number_of_packets; i++) {
385 status = urb->iso_frame_desc[i].status;
386
387 if (status < 0) {
388 print_err_status(dev, i, status);
389 continue;
390 }
391
392 len = urb->iso_frame_desc[i].actual_length;
393
394 if (len > 0) {
395 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
396 if (!urb->iso_frame_desc[i].status) {
397 if ((dev->fourcc) == V4L2_PIX_FMT_TM6000) {
398 rc = copy_multiplexed(p, len, urb);
399 if (rc <= 0)
400 return rc;
401 } else {
402 copy_streams(p, len, urb);
403 }
404 }
405 }
406 }
407 return rc;
408 }
409
410 /* ------------------------------------------------------------------
411 * URB control
412 * ------------------------------------------------------------------
413 */
414
415 /*
416 * IRQ callback, called by URB callback
417 */
418 static void tm6000_irq_callback(struct urb *urb)
419 {
420 struct tm6000_dmaqueue *dma_q = urb->context;
421 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
422 unsigned long flags;
423 int i;
424
425 switch (urb->status) {
426 case 0:
427 case -ETIMEDOUT:
428 break;
429
430 case -ECONNRESET:
431 case -ENOENT:
432 case -ESHUTDOWN:
433 return;
434
435 default:
436 tm6000_err("urb completion error %d.\n", urb->status);
437 break;
438 }
439
440 spin_lock_irqsave(&dev->slock, flags);
441 tm6000_isoc_copy(urb);
442 spin_unlock_irqrestore(&dev->slock, flags);
443
444 /* Reset urb buffers */
445 for (i = 0; i < urb->number_of_packets; i++) {
446 urb->iso_frame_desc[i].status = 0;
447 urb->iso_frame_desc[i].actual_length = 0;
448 }
449
450 urb->status = usb_submit_urb(urb, GFP_ATOMIC);
451 if (urb->status)
452 tm6000_err("urb resubmit failed (error=%i)\n",
453 urb->status);
454 }
455
456 /*
457 * Allocate URB buffers
458 */
459 static int tm6000_alloc_urb_buffers(struct tm6000_core *dev)
460 {
461 int num_bufs = TM6000_NUM_URB_BUF;
462 int i;
463
464 if (dev->urb_buffer)
465 return 0;
466
467 dev->urb_buffer = kmalloc_array(num_bufs, sizeof(void *), GFP_KERNEL);
468 if (!dev->urb_buffer)
469 return -ENOMEM;
470
471 dev->urb_dma = kmalloc_array(num_bufs, sizeof(dma_addr_t *),
472 GFP_KERNEL);
473 if (!dev->urb_dma)
474 return -ENOMEM;
475
476 for (i = 0; i < num_bufs; i++) {
477 dev->urb_buffer[i] = usb_alloc_coherent(
478 dev->udev, dev->urb_size,
479 GFP_KERNEL, &dev->urb_dma[i]);
480 if (!dev->urb_buffer[i]) {
481 tm6000_err("unable to allocate %i bytes for transfer buffer %i\n",
482 dev->urb_size, i);
483 return -ENOMEM;
484 }
485 memset(dev->urb_buffer[i], 0, dev->urb_size);
486 }
487
488 return 0;
489 }
490
491 /*
492 * Free URB buffers
493 */
494 static int tm6000_free_urb_buffers(struct tm6000_core *dev)
495 {
496 int i;
497
498 if (!dev->urb_buffer)
499 return 0;
500
501 for (i = 0; i < TM6000_NUM_URB_BUF; i++) {
502 if (dev->urb_buffer[i]) {
503 usb_free_coherent(dev->udev,
504 dev->urb_size,
505 dev->urb_buffer[i],
506 dev->urb_dma[i]);
507 dev->urb_buffer[i] = NULL;
508 }
509 }
510 kfree(dev->urb_buffer);
511 kfree(dev->urb_dma);
512 dev->urb_buffer = NULL;
513 dev->urb_dma = NULL;
514
515 return 0;
516 }
517
518 /*
519 * Stop and Deallocate URBs
520 */
521 static void tm6000_uninit_isoc(struct tm6000_core *dev)
522 {
523 struct urb *urb;
524 int i;
525
526 dev->isoc_ctl.buf = NULL;
527 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
528 urb = dev->isoc_ctl.urb[i];
529 if (urb) {
530 usb_kill_urb(urb);
531 usb_unlink_urb(urb);
532 usb_free_urb(urb);
533 dev->isoc_ctl.urb[i] = NULL;
534 }
535 dev->isoc_ctl.transfer_buffer[i] = NULL;
536 }
537
538 if (!keep_urb)
539 tm6000_free_urb_buffers(dev);
540
541 kfree(dev->isoc_ctl.urb);
542 kfree(dev->isoc_ctl.transfer_buffer);
543
544 dev->isoc_ctl.urb = NULL;
545 dev->isoc_ctl.transfer_buffer = NULL;
546 dev->isoc_ctl.num_bufs = 0;
547 }
548
549 /*
550 * Assign URBs and start IRQ
551 */
552 static int tm6000_prepare_isoc(struct tm6000_core *dev)
553 {
554 struct tm6000_dmaqueue *dma_q = &dev->vidq;
555 int i, j, sb_size, pipe, size, max_packets;
556 int num_bufs = TM6000_NUM_URB_BUF;
557 struct urb *urb;
558
559 /* De-allocates all pending stuff */
560 tm6000_uninit_isoc(dev);
561 /* Stop interrupt USB pipe */
562 tm6000_ir_int_stop(dev);
563
564 usb_set_interface(dev->udev,
565 dev->isoc_in.bInterfaceNumber,
566 dev->isoc_in.bAlternateSetting);
567
568 /* Start interrupt USB pipe */
569 tm6000_ir_int_start(dev);
570
571 pipe = usb_rcvisocpipe(dev->udev,
572 dev->isoc_in.endp->desc.bEndpointAddress &
573 USB_ENDPOINT_NUMBER_MASK);
574
575 size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
576
577 if (size > dev->isoc_in.maxsize)
578 size = dev->isoc_in.maxsize;
579
580 dev->isoc_ctl.max_pkt_size = size;
581
582 max_packets = TM6000_MAX_ISO_PACKETS;
583 sb_size = max_packets * size;
584 dev->urb_size = sb_size;
585
586 dev->isoc_ctl.num_bufs = num_bufs;
587
588 dev->isoc_ctl.urb = kmalloc_array(num_bufs, sizeof(void *),
589 GFP_KERNEL);
590 if (!dev->isoc_ctl.urb)
591 return -ENOMEM;
592
593 dev->isoc_ctl.transfer_buffer = kmalloc_array(num_bufs,
594 sizeof(void *),
595 GFP_KERNEL);
596 if (!dev->isoc_ctl.transfer_buffer) {
597 kfree(dev->isoc_ctl.urb);
598 return -ENOMEM;
599 }
600
601 dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets (%d bytes) of %d bytes each to handle %u size\n",
602 max_packets, num_bufs, sb_size,
603 dev->isoc_in.maxsize, size);
604
605
606 if (tm6000_alloc_urb_buffers(dev) < 0) {
607 tm6000_err("cannot allocate memory for urb buffers\n");
608
609 /* call free, as some buffers might have been allocated */
610 tm6000_free_urb_buffers(dev);
611 kfree(dev->isoc_ctl.urb);
612 kfree(dev->isoc_ctl.transfer_buffer);
613 return -ENOMEM;
614 }
615
616 /* allocate urbs and transfer buffers */
617 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
618 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
619 if (!urb) {
620 tm6000_uninit_isoc(dev);
621 tm6000_free_urb_buffers(dev);
622 return -ENOMEM;
623 }
624 dev->isoc_ctl.urb[i] = urb;
625
626 urb->transfer_dma = dev->urb_dma[i];
627 dev->isoc_ctl.transfer_buffer[i] = dev->urb_buffer[i];
628
629 usb_fill_bulk_urb(urb, dev->udev, pipe,
630 dev->isoc_ctl.transfer_buffer[i], sb_size,
631 tm6000_irq_callback, dma_q);
632 urb->interval = dev->isoc_in.endp->desc.bInterval;
633 urb->number_of_packets = max_packets;
634 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
635
636 for (j = 0; j < max_packets; j++) {
637 urb->iso_frame_desc[j].offset = size * j;
638 urb->iso_frame_desc[j].length = size;
639 }
640 }
641
642 return 0;
643 }
644
645 static int tm6000_start_thread(struct tm6000_core *dev)
646 {
647 struct tm6000_dmaqueue *dma_q = &dev->vidq;
648 int i;
649
650 dma_q->frame = 0;
651 dma_q->ini_jiffies = jiffies;
652
653 init_waitqueue_head(&dma_q->wq);
654
655 /* submit urbs and enables IRQ */
656 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
657 int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
658 if (rc) {
659 tm6000_err("submit of urb %i failed (error=%i)\n", i,
660 rc);
661 tm6000_uninit_isoc(dev);
662 return rc;
663 }
664 }
665
666 return 0;
667 }
668
669 /* ------------------------------------------------------------------
670 * Videobuf operations
671 * ------------------------------------------------------------------
672 */
673
674 static int
675 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
676 {
677 struct tm6000_fh *fh = vq->priv_data;
678
679 *size = fh->fmt->depth * fh->width * fh->height >> 3;
680 if (0 == *count)
681 *count = TM6000_DEF_BUF;
682
683 if (*count < TM6000_MIN_BUF)
684 *count = TM6000_MIN_BUF;
685
686 while (*size * *count > vid_limit * 1024 * 1024)
687 (*count)--;
688
689 return 0;
690 }
691
692 static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf)
693 {
694 struct tm6000_fh *fh = vq->priv_data;
695 struct tm6000_core *dev = fh->dev;
696 unsigned long flags;
697
698 BUG_ON(in_interrupt());
699
700 /* We used to wait for the buffer to finish here, but this didn't work
701 because, as we were keeping the state as VIDEOBUF_QUEUED,
702 videobuf_queue_cancel marked it as finished for us.
703 (Also, it could wedge forever if the hardware was misconfigured.)
704
705 This should be safe; by the time we get here, the buffer isn't
706 queued anymore. If we ever start marking the buffers as
707 VIDEOBUF_ACTIVE, it won't be, though.
708 */
709 spin_lock_irqsave(&dev->slock, flags);
710 if (dev->isoc_ctl.buf == buf)
711 dev->isoc_ctl.buf = NULL;
712 spin_unlock_irqrestore(&dev->slock, flags);
713
714 videobuf_vmalloc_free(&buf->vb);
715 buf->vb.state = VIDEOBUF_NEEDS_INIT;
716 }
717
718 static int
719 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
720 enum v4l2_field field)
721 {
722 struct tm6000_fh *fh = vq->priv_data;
723 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
724 struct tm6000_core *dev = fh->dev;
725 int rc = 0;
726
727 BUG_ON(NULL == fh->fmt);
728
729
730 /* FIXME: It assumes depth=2 */
731 /* The only currently supported format is 16 bits/pixel */
732 buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
733 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
734 return -EINVAL;
735
736 if (buf->fmt != fh->fmt ||
737 buf->vb.width != fh->width ||
738 buf->vb.height != fh->height ||
739 buf->vb.field != field) {
740 buf->fmt = fh->fmt;
741 buf->vb.width = fh->width;
742 buf->vb.height = fh->height;
743 buf->vb.field = field;
744 buf->vb.state = VIDEOBUF_NEEDS_INIT;
745 }
746
747 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
748 rc = videobuf_iolock(vq, &buf->vb, NULL);
749 if (rc != 0)
750 goto fail;
751 }
752
753 if (!dev->isoc_ctl.num_bufs) {
754 rc = tm6000_prepare_isoc(dev);
755 if (rc < 0)
756 goto fail;
757
758 rc = tm6000_start_thread(dev);
759 if (rc < 0)
760 goto fail;
761
762 }
763
764 buf->vb.state = VIDEOBUF_PREPARED;
765 return 0;
766
767 fail:
768 free_buffer(vq, buf);
769 return rc;
770 }
771
772 static void
773 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
774 {
775 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
776 struct tm6000_fh *fh = vq->priv_data;
777 struct tm6000_core *dev = fh->dev;
778 struct tm6000_dmaqueue *vidq = &dev->vidq;
779
780 buf->vb.state = VIDEOBUF_QUEUED;
781 list_add_tail(&buf->vb.queue, &vidq->active);
782 }
783
784 static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
785 {
786 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
787
788 free_buffer(vq, buf);
789 }
790
791 static const struct videobuf_queue_ops tm6000_video_qops = {
792 .buf_setup = buffer_setup,
793 .buf_prepare = buffer_prepare,
794 .buf_queue = buffer_queue,
795 .buf_release = buffer_release,
796 };
797
798 /* ------------------------------------------------------------------
799 * IOCTL handling
800 * ------------------------------------------------------------------
801 */
802
803 static bool is_res_read(struct tm6000_core *dev, struct tm6000_fh *fh)
804 {
805 /* Is the current fh handling it? if so, that's OK */
806 if (dev->resources == fh && dev->is_res_read)
807 return true;
808
809 return false;
810 }
811
812 static bool is_res_streaming(struct tm6000_core *dev, struct tm6000_fh *fh)
813 {
814 /* Is the current fh handling it? if so, that's OK */
815 if (dev->resources == fh)
816 return true;
817
818 return false;
819 }
820
821 static bool res_get(struct tm6000_core *dev, struct tm6000_fh *fh,
822 bool is_res_read)
823 {
824 /* Is the current fh handling it? if so, that's OK */
825 if (dev->resources == fh && dev->is_res_read == is_res_read)
826 return true;
827
828 /* is it free? */
829 if (dev->resources)
830 return false;
831
832 /* grab it */
833 dev->resources = fh;
834 dev->is_res_read = is_res_read;
835 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
836 return true;
837 }
838
839 static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
840 {
841 /* Is the current fh handling it? if so, that's OK */
842 if (dev->resources != fh)
843 return;
844
845 dev->resources = NULL;
846 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
847 }
848
849 /* ------------------------------------------------------------------
850 * IOCTL vidioc handling
851 * ------------------------------------------------------------------
852 */
853 static int vidioc_querycap(struct file *file, void *priv,
854 struct v4l2_capability *cap)
855 {
856 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
857 struct video_device *vdev = video_devdata(file);
858
859 strlcpy(cap->driver, "tm6000", sizeof(cap->driver));
860 strlcpy(cap->card, "Trident TVMaster TM5600/6000/6010", sizeof(cap->card));
861 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
862 if (dev->tuner_type != TUNER_ABSENT)
863 cap->device_caps |= V4L2_CAP_TUNER;
864 if (vdev->vfl_type == VFL_TYPE_GRABBER)
865 cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE |
866 V4L2_CAP_STREAMING |
867 V4L2_CAP_READWRITE;
868 else
869 cap->device_caps |= V4L2_CAP_RADIO;
870 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
871 V4L2_CAP_RADIO | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
872
873 return 0;
874 }
875
876 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
877 struct v4l2_fmtdesc *f)
878 {
879 if (f->index >= ARRAY_SIZE(format))
880 return -EINVAL;
881
882 strlcpy(f->description, format[f->index].name, sizeof(f->description));
883 f->pixelformat = format[f->index].fourcc;
884 return 0;
885 }
886
887 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
888 struct v4l2_format *f)
889 {
890 struct tm6000_fh *fh = priv;
891
892 f->fmt.pix.width = fh->width;
893 f->fmt.pix.height = fh->height;
894 f->fmt.pix.field = fh->vb_vidq.field;
895 f->fmt.pix.pixelformat = fh->fmt->fourcc;
896 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
897 f->fmt.pix.bytesperline =
898 (f->fmt.pix.width * fh->fmt->depth) >> 3;
899 f->fmt.pix.sizeimage =
900 f->fmt.pix.height * f->fmt.pix.bytesperline;
901
902 return 0;
903 }
904
905 static struct tm6000_fmt *format_by_fourcc(unsigned int fourcc)
906 {
907 unsigned int i;
908
909 for (i = 0; i < ARRAY_SIZE(format); i++)
910 if (format[i].fourcc == fourcc)
911 return format+i;
912 return NULL;
913 }
914
915 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
916 struct v4l2_format *f)
917 {
918 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
919 struct tm6000_fmt *fmt;
920 enum v4l2_field field;
921
922 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
923 if (NULL == fmt) {
924 dprintk(dev, 2, "Fourcc format (0x%08x) invalid.\n",
925 f->fmt.pix.pixelformat);
926 return -EINVAL;
927 }
928
929 field = f->fmt.pix.field;
930
931 field = V4L2_FIELD_INTERLACED;
932
933 tm6000_get_std_res(dev);
934
935 f->fmt.pix.width = dev->width;
936 f->fmt.pix.height = dev->height;
937
938 f->fmt.pix.width &= ~0x01;
939
940 f->fmt.pix.field = field;
941
942 f->fmt.pix.bytesperline =
943 (f->fmt.pix.width * fmt->depth) >> 3;
944 f->fmt.pix.sizeimage =
945 f->fmt.pix.height * f->fmt.pix.bytesperline;
946 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
947
948 return 0;
949 }
950
951 /*FIXME: This seems to be generic enough to be at videodev2 */
952 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
953 struct v4l2_format *f)
954 {
955 struct tm6000_fh *fh = priv;
956 struct tm6000_core *dev = fh->dev;
957 int ret = vidioc_try_fmt_vid_cap(file, fh, f);
958 if (ret < 0)
959 return ret;
960
961 fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
962 fh->width = f->fmt.pix.width;
963 fh->height = f->fmt.pix.height;
964 fh->vb_vidq.field = f->fmt.pix.field;
965 fh->type = f->type;
966
967 dev->fourcc = f->fmt.pix.pixelformat;
968
969 tm6000_set_fourcc_format(dev);
970
971 return 0;
972 }
973
974 static int vidioc_reqbufs(struct file *file, void *priv,
975 struct v4l2_requestbuffers *p)
976 {
977 struct tm6000_fh *fh = priv;
978
979 return videobuf_reqbufs(&fh->vb_vidq, p);
980 }
981
982 static int vidioc_querybuf(struct file *file, void *priv,
983 struct v4l2_buffer *p)
984 {
985 struct tm6000_fh *fh = priv;
986
987 return videobuf_querybuf(&fh->vb_vidq, p);
988 }
989
990 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
991 {
992 struct tm6000_fh *fh = priv;
993
994 return videobuf_qbuf(&fh->vb_vidq, p);
995 }
996
997 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
998 {
999 struct tm6000_fh *fh = priv;
1000
1001 return videobuf_dqbuf(&fh->vb_vidq, p,
1002 file->f_flags & O_NONBLOCK);
1003 }
1004
1005 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
1006 {
1007 struct tm6000_fh *fh = priv;
1008 struct tm6000_core *dev = fh->dev;
1009
1010 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1011 return -EINVAL;
1012 if (i != fh->type)
1013 return -EINVAL;
1014
1015 if (!res_get(dev, fh, false))
1016 return -EBUSY;
1017 return videobuf_streamon(&fh->vb_vidq);
1018 }
1019
1020 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
1021 {
1022 struct tm6000_fh *fh = priv;
1023 struct tm6000_core *dev = fh->dev;
1024
1025 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1026 return -EINVAL;
1027
1028 if (i != fh->type)
1029 return -EINVAL;
1030
1031 videobuf_streamoff(&fh->vb_vidq);
1032 res_free(dev, fh);
1033
1034 return 0;
1035 }
1036
1037 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1038 {
1039 int rc = 0;
1040 struct tm6000_fh *fh = priv;
1041 struct tm6000_core *dev = fh->dev;
1042
1043 dev->norm = norm;
1044 rc = tm6000_init_analog_mode(dev);
1045
1046 fh->width = dev->width;
1047 fh->height = dev->height;
1048
1049 if (rc < 0)
1050 return rc;
1051
1052 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->norm);
1053
1054 return 0;
1055 }
1056
1057 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1058 {
1059 struct tm6000_fh *fh = priv;
1060 struct tm6000_core *dev = fh->dev;
1061
1062 *norm = dev->norm;
1063 return 0;
1064 }
1065
1066 static const char *iname[] = {
1067 [TM6000_INPUT_TV] = "Television",
1068 [TM6000_INPUT_COMPOSITE1] = "Composite 1",
1069 [TM6000_INPUT_COMPOSITE2] = "Composite 2",
1070 [TM6000_INPUT_SVIDEO] = "S-Video",
1071 };
1072
1073 static int vidioc_enum_input(struct file *file, void *priv,
1074 struct v4l2_input *i)
1075 {
1076 struct tm6000_fh *fh = priv;
1077 struct tm6000_core *dev = fh->dev;
1078 unsigned int n;
1079
1080 n = i->index;
1081 if (n >= 3)
1082 return -EINVAL;
1083
1084 if (!dev->vinput[n].type)
1085 return -EINVAL;
1086
1087 i->index = n;
1088
1089 if (dev->vinput[n].type == TM6000_INPUT_TV)
1090 i->type = V4L2_INPUT_TYPE_TUNER;
1091 else
1092 i->type = V4L2_INPUT_TYPE_CAMERA;
1093
1094 strcpy(i->name, iname[dev->vinput[n].type]);
1095
1096 i->std = TM6000_STD;
1097
1098 return 0;
1099 }
1100
1101 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1102 {
1103 struct tm6000_fh *fh = priv;
1104 struct tm6000_core *dev = fh->dev;
1105
1106 *i = dev->input;
1107
1108 return 0;
1109 }
1110
1111 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1112 {
1113 struct tm6000_fh *fh = priv;
1114 struct tm6000_core *dev = fh->dev;
1115 int rc = 0;
1116
1117 if (i >= 3)
1118 return -EINVAL;
1119 if (!dev->vinput[i].type)
1120 return -EINVAL;
1121
1122 dev->input = i;
1123
1124 rc = vidioc_s_std(file, priv, dev->norm);
1125
1126 return rc;
1127 }
1128
1129 /* --- controls ---------------------------------------------- */
1130
1131 static int tm6000_s_ctrl(struct v4l2_ctrl *ctrl)
1132 {
1133 struct tm6000_core *dev = container_of(ctrl->handler, struct tm6000_core, ctrl_handler);
1134 u8 val = ctrl->val;
1135
1136 switch (ctrl->id) {
1137 case V4L2_CID_CONTRAST:
1138 tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val);
1139 return 0;
1140 case V4L2_CID_BRIGHTNESS:
1141 tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val);
1142 return 0;
1143 case V4L2_CID_SATURATION:
1144 tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val);
1145 return 0;
1146 case V4L2_CID_HUE:
1147 tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val);
1148 return 0;
1149 }
1150 return -EINVAL;
1151 }
1152
1153 static const struct v4l2_ctrl_ops tm6000_ctrl_ops = {
1154 .s_ctrl = tm6000_s_ctrl,
1155 };
1156
1157 static int tm6000_radio_s_ctrl(struct v4l2_ctrl *ctrl)
1158 {
1159 struct tm6000_core *dev = container_of(ctrl->handler,
1160 struct tm6000_core, radio_ctrl_handler);
1161 u8 val = ctrl->val;
1162
1163 switch (ctrl->id) {
1164 case V4L2_CID_AUDIO_MUTE:
1165 dev->ctl_mute = val;
1166 tm6000_tvaudio_set_mute(dev, val);
1167 return 0;
1168 case V4L2_CID_AUDIO_VOLUME:
1169 dev->ctl_volume = val;
1170 tm6000_set_volume(dev, val);
1171 return 0;
1172 }
1173 return -EINVAL;
1174 }
1175
1176 static const struct v4l2_ctrl_ops tm6000_radio_ctrl_ops = {
1177 .s_ctrl = tm6000_radio_s_ctrl,
1178 };
1179
1180 static int vidioc_g_tuner(struct file *file, void *priv,
1181 struct v4l2_tuner *t)
1182 {
1183 struct tm6000_fh *fh = priv;
1184 struct tm6000_core *dev = fh->dev;
1185
1186 if (UNSET == dev->tuner_type)
1187 return -ENOTTY;
1188 if (0 != t->index)
1189 return -EINVAL;
1190
1191 strcpy(t->name, "Television");
1192 t->type = V4L2_TUNER_ANALOG_TV;
1193 t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO;
1194 t->rangehigh = 0xffffffffUL;
1195 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1196
1197 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1198
1199 t->audmode = dev->amode;
1200
1201 return 0;
1202 }
1203
1204 static int vidioc_s_tuner(struct file *file, void *priv,
1205 const struct v4l2_tuner *t)
1206 {
1207 struct tm6000_fh *fh = priv;
1208 struct tm6000_core *dev = fh->dev;
1209
1210 if (UNSET == dev->tuner_type)
1211 return -ENOTTY;
1212 if (0 != t->index)
1213 return -EINVAL;
1214
1215 if (t->audmode > V4L2_TUNER_MODE_STEREO)
1216 dev->amode = V4L2_TUNER_MODE_STEREO;
1217 else
1218 dev->amode = t->audmode;
1219 dprintk(dev, 3, "audio mode: %x\n", t->audmode);
1220
1221 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1222
1223 return 0;
1224 }
1225
1226 static int vidioc_g_frequency(struct file *file, void *priv,
1227 struct v4l2_frequency *f)
1228 {
1229 struct tm6000_fh *fh = priv;
1230 struct tm6000_core *dev = fh->dev;
1231
1232 if (UNSET == dev->tuner_type)
1233 return -ENOTTY;
1234 if (f->tuner)
1235 return -EINVAL;
1236
1237 f->frequency = dev->freq;
1238
1239 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
1240
1241 return 0;
1242 }
1243
1244 static int vidioc_s_frequency(struct file *file, void *priv,
1245 const struct v4l2_frequency *f)
1246 {
1247 struct tm6000_fh *fh = priv;
1248 struct tm6000_core *dev = fh->dev;
1249
1250 if (UNSET == dev->tuner_type)
1251 return -ENOTTY;
1252 if (f->tuner != 0)
1253 return -EINVAL;
1254
1255 dev->freq = f->frequency;
1256 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1257
1258 return 0;
1259 }
1260
1261 static int radio_g_tuner(struct file *file, void *priv,
1262 struct v4l2_tuner *t)
1263 {
1264 struct tm6000_fh *fh = file->private_data;
1265 struct tm6000_core *dev = fh->dev;
1266
1267 if (0 != t->index)
1268 return -EINVAL;
1269
1270 memset(t, 0, sizeof(*t));
1271 strcpy(t->name, "Radio");
1272 t->type = V4L2_TUNER_RADIO;
1273 t->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
1274 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1275 t->audmode = V4L2_TUNER_MODE_STEREO;
1276
1277 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1278
1279 return 0;
1280 }
1281
1282 static int radio_s_tuner(struct file *file, void *priv,
1283 const struct v4l2_tuner *t)
1284 {
1285 struct tm6000_fh *fh = file->private_data;
1286 struct tm6000_core *dev = fh->dev;
1287
1288 if (0 != t->index)
1289 return -EINVAL;
1290 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1291 return 0;
1292 }
1293
1294 /* ------------------------------------------------------------------
1295 File operations for the device
1296 ------------------------------------------------------------------*/
1297
1298 static int __tm6000_open(struct file *file)
1299 {
1300 struct video_device *vdev = video_devdata(file);
1301 struct tm6000_core *dev = video_drvdata(file);
1302 struct tm6000_fh *fh;
1303 enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1304 int rc;
1305 int radio = 0;
1306
1307 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
1308 video_device_node_name(vdev));
1309
1310 switch (vdev->vfl_type) {
1311 case VFL_TYPE_GRABBER:
1312 type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1313 break;
1314 case VFL_TYPE_VBI:
1315 type = V4L2_BUF_TYPE_VBI_CAPTURE;
1316 break;
1317 case VFL_TYPE_RADIO:
1318 radio = 1;
1319 break;
1320 default:
1321 return -EINVAL;
1322 }
1323
1324 /* If more than one user, mutex should be added */
1325 dev->users++;
1326
1327 dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
1328 video_device_node_name(vdev), v4l2_type_names[type],
1329 dev->users);
1330
1331 /* allocate + initialize per filehandle data */
1332 fh = kzalloc(sizeof(*fh), GFP_KERNEL);
1333 if (NULL == fh) {
1334 dev->users--;
1335 return -ENOMEM;
1336 }
1337
1338 v4l2_fh_init(&fh->fh, vdev);
1339 file->private_data = fh;
1340 fh->dev = dev;
1341 fh->radio = radio;
1342 dev->radio = radio;
1343 fh->type = type;
1344 dev->fourcc = format[0].fourcc;
1345
1346 fh->fmt = format_by_fourcc(dev->fourcc);
1347
1348 tm6000_get_std_res(dev);
1349
1350 fh->width = dev->width;
1351 fh->height = dev->height;
1352
1353 dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=%p, dev=%p, dev->vidq=%p\n",
1354 fh, dev, &dev->vidq);
1355 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty queued=%d\n",
1356 list_empty(&dev->vidq.queued));
1357 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty active=%d\n",
1358 list_empty(&dev->vidq.active));
1359
1360 /* initialize hardware on analog mode */
1361 rc = tm6000_init_analog_mode(dev);
1362 if (rc < 0) {
1363 v4l2_fh_exit(&fh->fh);
1364 kfree(fh);
1365 return rc;
1366 }
1367
1368 dev->mode = TM6000_MODE_ANALOG;
1369
1370 if (!fh->radio) {
1371 videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
1372 NULL, &dev->slock,
1373 fh->type,
1374 V4L2_FIELD_INTERLACED,
1375 sizeof(struct tm6000_buffer), fh, &dev->lock);
1376 } else {
1377 dprintk(dev, V4L2_DEBUG_OPEN, "video_open: setting radio device\n");
1378 tm6000_set_audio_rinput(dev);
1379 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1380 tm6000_prepare_isoc(dev);
1381 tm6000_start_thread(dev);
1382 }
1383 v4l2_fh_add(&fh->fh);
1384
1385 return 0;
1386 }
1387
1388 static int tm6000_open(struct file *file)
1389 {
1390 struct video_device *vdev = video_devdata(file);
1391 int res;
1392
1393 mutex_lock(vdev->lock);
1394 res = __tm6000_open(file);
1395 mutex_unlock(vdev->lock);
1396 return res;
1397 }
1398
1399 static ssize_t
1400 tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
1401 {
1402 struct tm6000_fh *fh = file->private_data;
1403 struct tm6000_core *dev = fh->dev;
1404
1405 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1406 int res;
1407
1408 if (!res_get(fh->dev, fh, true))
1409 return -EBUSY;
1410
1411 if (mutex_lock_interruptible(&dev->lock))
1412 return -ERESTARTSYS;
1413 res = videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
1414 file->f_flags & O_NONBLOCK);
1415 mutex_unlock(&dev->lock);
1416 return res;
1417 }
1418 return 0;
1419 }
1420
1421 static __poll_t
1422 __tm6000_poll(struct file *file, struct poll_table_struct *wait)
1423 {
1424 __poll_t req_events = poll_requested_events(wait);
1425 struct tm6000_fh *fh = file->private_data;
1426 struct tm6000_buffer *buf;
1427 __poll_t res = 0;
1428
1429 if (v4l2_event_pending(&fh->fh))
1430 res = EPOLLPRI;
1431 else if (req_events & EPOLLPRI)
1432 poll_wait(file, &fh->fh.wait, wait);
1433 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1434 return res | EPOLLERR;
1435
1436 if (!!is_res_streaming(fh->dev, fh))
1437 return res | EPOLLERR;
1438
1439 if (!is_res_read(fh->dev, fh)) {
1440 /* streaming capture */
1441 if (list_empty(&fh->vb_vidq.stream))
1442 return res | EPOLLERR;
1443 buf = list_entry(fh->vb_vidq.stream.next, struct tm6000_buffer, vb.stream);
1444 poll_wait(file, &buf->vb.done, wait);
1445 if (buf->vb.state == VIDEOBUF_DONE ||
1446 buf->vb.state == VIDEOBUF_ERROR)
1447 return res | EPOLLIN | EPOLLRDNORM;
1448 } else if (req_events & (EPOLLIN | EPOLLRDNORM)) {
1449 /* read() capture */
1450 return res | videobuf_poll_stream(file, &fh->vb_vidq, wait);
1451 }
1452 return res;
1453 }
1454
1455 static __poll_t tm6000_poll(struct file *file, struct poll_table_struct *wait)
1456 {
1457 struct tm6000_fh *fh = file->private_data;
1458 struct tm6000_core *dev = fh->dev;
1459 __poll_t res;
1460
1461 mutex_lock(&dev->lock);
1462 res = __tm6000_poll(file, wait);
1463 mutex_unlock(&dev->lock);
1464 return res;
1465 }
1466
1467 static int tm6000_release(struct file *file)
1468 {
1469 struct tm6000_fh *fh = file->private_data;
1470 struct tm6000_core *dev = fh->dev;
1471 struct video_device *vdev = video_devdata(file);
1472
1473 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
1474 video_device_node_name(vdev), dev->users);
1475
1476 mutex_lock(&dev->lock);
1477 dev->users--;
1478
1479 res_free(dev, fh);
1480
1481 if (!dev->users) {
1482 tm6000_uninit_isoc(dev);
1483
1484 /* Stop interrupt USB pipe */
1485 tm6000_ir_int_stop(dev);
1486
1487 usb_reset_configuration(dev->udev);
1488
1489 if (dev->int_in.endp)
1490 usb_set_interface(dev->udev,
1491 dev->isoc_in.bInterfaceNumber, 2);
1492 else
1493 usb_set_interface(dev->udev,
1494 dev->isoc_in.bInterfaceNumber, 0);
1495
1496 /* Start interrupt USB pipe */
1497 tm6000_ir_int_start(dev);
1498
1499 if (!fh->radio)
1500 videobuf_mmap_free(&fh->vb_vidq);
1501 }
1502 v4l2_fh_del(&fh->fh);
1503 v4l2_fh_exit(&fh->fh);
1504 kfree(fh);
1505 mutex_unlock(&dev->lock);
1506
1507 return 0;
1508 }
1509
1510 static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
1511 {
1512 struct tm6000_fh *fh = file->private_data;
1513 struct tm6000_core *dev = fh->dev;
1514 int res;
1515
1516 if (mutex_lock_interruptible(&dev->lock))
1517 return -ERESTARTSYS;
1518 res = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1519 mutex_unlock(&dev->lock);
1520 return res;
1521 }
1522
1523 static const struct v4l2_file_operations tm6000_fops = {
1524 .owner = THIS_MODULE,
1525 .open = tm6000_open,
1526 .release = tm6000_release,
1527 .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
1528 .read = tm6000_read,
1529 .poll = tm6000_poll,
1530 .mmap = tm6000_mmap,
1531 };
1532
1533 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1534 .vidioc_querycap = vidioc_querycap,
1535 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1536 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1537 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1538 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1539 .vidioc_s_std = vidioc_s_std,
1540 .vidioc_g_std = vidioc_g_std,
1541 .vidioc_enum_input = vidioc_enum_input,
1542 .vidioc_g_input = vidioc_g_input,
1543 .vidioc_s_input = vidioc_s_input,
1544 .vidioc_g_tuner = vidioc_g_tuner,
1545 .vidioc_s_tuner = vidioc_s_tuner,
1546 .vidioc_g_frequency = vidioc_g_frequency,
1547 .vidioc_s_frequency = vidioc_s_frequency,
1548 .vidioc_streamon = vidioc_streamon,
1549 .vidioc_streamoff = vidioc_streamoff,
1550 .vidioc_reqbufs = vidioc_reqbufs,
1551 .vidioc_querybuf = vidioc_querybuf,
1552 .vidioc_qbuf = vidioc_qbuf,
1553 .vidioc_dqbuf = vidioc_dqbuf,
1554 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1555 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1556 };
1557
1558 static struct video_device tm6000_template = {
1559 .name = "tm6000",
1560 .fops = &tm6000_fops,
1561 .ioctl_ops = &video_ioctl_ops,
1562 .release = video_device_release_empty,
1563 .tvnorms = TM6000_STD,
1564 };
1565
1566 static const struct v4l2_file_operations radio_fops = {
1567 .owner = THIS_MODULE,
1568 .open = tm6000_open,
1569 .poll = v4l2_ctrl_poll,
1570 .release = tm6000_release,
1571 .unlocked_ioctl = video_ioctl2,
1572 };
1573
1574 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1575 .vidioc_querycap = vidioc_querycap,
1576 .vidioc_g_tuner = radio_g_tuner,
1577 .vidioc_s_tuner = radio_s_tuner,
1578 .vidioc_g_frequency = vidioc_g_frequency,
1579 .vidioc_s_frequency = vidioc_s_frequency,
1580 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1581 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1582 };
1583
1584 static struct video_device tm6000_radio_template = {
1585 .name = "tm6000",
1586 .fops = &radio_fops,
1587 .ioctl_ops = &radio_ioctl_ops,
1588 };
1589
1590 /* -----------------------------------------------------------------
1591 * Initialization and module stuff
1592 * ------------------------------------------------------------------
1593 */
1594
1595 static void vdev_init(struct tm6000_core *dev,
1596 struct video_device *vfd,
1597 const struct video_device
1598 *template, const char *type_name)
1599 {
1600 *vfd = *template;
1601 vfd->v4l2_dev = &dev->v4l2_dev;
1602 vfd->release = video_device_release_empty;
1603 vfd->lock = &dev->lock;
1604
1605 snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
1606
1607 video_set_drvdata(vfd, dev);
1608 }
1609
1610 int tm6000_v4l2_register(struct tm6000_core *dev)
1611 {
1612 int ret = 0;
1613
1614 v4l2_ctrl_handler_init(&dev->ctrl_handler, 6);
1615 v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 2);
1616 v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
1617 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
1618 v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
1619 V4L2_CID_AUDIO_VOLUME, -15, 15, 1, 0);
1620 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1621 V4L2_CID_BRIGHTNESS, 0, 255, 1, 54);
1622 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1623 V4L2_CID_CONTRAST, 0, 255, 1, 119);
1624 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1625 V4L2_CID_SATURATION, 0, 255, 1, 112);
1626 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1627 V4L2_CID_HUE, -128, 127, 1, 0);
1628 v4l2_ctrl_add_handler(&dev->ctrl_handler,
1629 &dev->radio_ctrl_handler, NULL);
1630
1631 if (dev->radio_ctrl_handler.error)
1632 ret = dev->radio_ctrl_handler.error;
1633 if (!ret && dev->ctrl_handler.error)
1634 ret = dev->ctrl_handler.error;
1635 if (ret)
1636 goto free_ctrl;
1637
1638 vdev_init(dev, &dev->vfd, &tm6000_template, "video");
1639
1640 dev->vfd.ctrl_handler = &dev->ctrl_handler;
1641
1642 /* init video dma queues */
1643 INIT_LIST_HEAD(&dev->vidq.active);
1644 INIT_LIST_HEAD(&dev->vidq.queued);
1645
1646 ret = video_register_device(&dev->vfd, VFL_TYPE_GRABBER, video_nr);
1647
1648 if (ret < 0) {
1649 printk(KERN_INFO "%s: can't register video device\n",
1650 dev->name);
1651 goto free_ctrl;
1652 }
1653
1654 printk(KERN_INFO "%s: registered device %s\n",
1655 dev->name, video_device_node_name(&dev->vfd));
1656
1657 if (dev->caps.has_radio) {
1658 vdev_init(dev, &dev->radio_dev, &tm6000_radio_template,
1659 "radio");
1660 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
1661 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
1662 radio_nr);
1663 if (ret < 0) {
1664 printk(KERN_INFO "%s: can't register radio device\n",
1665 dev->name);
1666 goto unreg_video;
1667 }
1668
1669 printk(KERN_INFO "%s: registered device %s\n",
1670 dev->name, video_device_node_name(&dev->radio_dev));
1671 }
1672
1673 printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
1674 return ret;
1675
1676 unreg_video:
1677 video_unregister_device(&dev->vfd);
1678 free_ctrl:
1679 v4l2_ctrl_handler_free(&dev->ctrl_handler);
1680 v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1681 return ret;
1682 }
1683
1684 int tm6000_v4l2_unregister(struct tm6000_core *dev)
1685 {
1686 video_unregister_device(&dev->vfd);
1687
1688 /* if URB buffers are still allocated free them now */
1689 tm6000_free_urb_buffers(dev);
1690
1691 video_unregister_device(&dev->radio_dev);
1692 return 0;
1693 }
1694
1695 int tm6000_v4l2_exit(void)
1696 {
1697 return 0;
1698 }
1699
1700 module_param(video_nr, int, 0);
1701 MODULE_PARM_DESC(video_nr, "Allow changing video device number");
1702
1703 module_param_named(debug, tm6000_debug, int, 0444);
1704 MODULE_PARM_DESC(debug, "activates debug info");
1705
1706 module_param(vid_limit, int, 0644);
1707 MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
1708
1709 module_param(keep_urb, bool, 0);
1710 MODULE_PARM_DESC(keep_urb, "Keep urb buffers allocated even when the device is closed by the user");
Linux with added FPC-III support