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[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / tm6000 / tm6000-video.c
1 /*
2 * tm6000-video.c - driver for TM5600/TM6000/TM6010 USB video capture devices
3 *
4 * Copyright (C) 2006-2007 Mauro Carvalho Chehab <mchehab@infradead.org>
5 *
6 * Copyright (C) 2007 Michel Ludwig <michel.ludwig@gmail.com>
7 * - Fixed module load/unload
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation version 2
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 */
22 #include <linux/module.h>
23 #include <linux/delay.h>
24 #include <linux/errno.h>
25 #include <linux/fs.h>
26 #include <linux/kernel.h>
27 #include <linux/slab.h>
28 #include <linux/mm.h>
29 #include <linux/ioport.h>
30 #include <linux/init.h>
31 #include <linux/sched.h>
32 #include <linux/random.h>
33 #include <linux/version.h>
34 #include <linux/usb.h>
35 #include <linux/videodev2.h>
36 #include <media/v4l2-ioctl.h>
37 #include <linux/interrupt.h>
38 #include <linux/kthread.h>
39 #include <linux/highmem.h>
40 #include <linux/freezer.h>
41
42 #include "tm6000-regs.h"
43 #include "tm6000.h"
44
45 #define BUFFER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
46
47 /* Limits minimum and default number of buffers */
48 #define TM6000_MIN_BUF 4
49 #define TM6000_DEF_BUF 8
50
51 #define TM6000_MAX_ISO_PACKETS 46 /* Max number of ISO packets */
52
53 /* Declare static vars that will be used as parameters */
54 static unsigned int vid_limit = 16; /* Video memory limit, in Mb */
55 static int video_nr = -1; /* /dev/videoN, -1 for autodetect */
56
57 /* Debug level */
58 int tm6000_debug;
59 EXPORT_SYMBOL_GPL(tm6000_debug);
60
61 /* supported controls */
62 static struct v4l2_queryctrl tm6000_qctrl[] = {
63 {
64 .id = V4L2_CID_BRIGHTNESS,
65 .type = V4L2_CTRL_TYPE_INTEGER,
66 .name = "Brightness",
67 .minimum = 0,
68 .maximum = 255,
69 .step = 1,
70 .default_value = 54,
71 .flags = 0,
72 }, {
73 .id = V4L2_CID_CONTRAST,
74 .type = V4L2_CTRL_TYPE_INTEGER,
75 .name = "Contrast",
76 .minimum = 0,
77 .maximum = 255,
78 .step = 0x1,
79 .default_value = 119,
80 .flags = 0,
81 }, {
82 .id = V4L2_CID_SATURATION,
83 .type = V4L2_CTRL_TYPE_INTEGER,
84 .name = "Saturation",
85 .minimum = 0,
86 .maximum = 255,
87 .step = 0x1,
88 .default_value = 112,
89 .flags = 0,
90 }, {
91 .id = V4L2_CID_HUE,
92 .type = V4L2_CTRL_TYPE_INTEGER,
93 .name = "Hue",
94 .minimum = -128,
95 .maximum = 127,
96 .step = 0x1,
97 .default_value = 0,
98 .flags = 0,
99 }
100 };
101
102 static int qctl_regs[ARRAY_SIZE(tm6000_qctrl)];
103
104 static struct tm6000_fmt format[] = {
105 {
106 .name = "4:2:2, packed, YVY2",
107 .fourcc = V4L2_PIX_FMT_YUYV,
108 .depth = 16,
109 }, {
110 .name = "4:2:2, packed, UYVY",
111 .fourcc = V4L2_PIX_FMT_UYVY,
112 .depth = 16,
113 }, {
114 .name = "A/V + VBI mux packet",
115 .fourcc = V4L2_PIX_FMT_TM6000,
116 .depth = 16,
117 }
118 };
119
120 /* ------------------------------------------------------------------
121 * DMA and thread functions
122 * ------------------------------------------------------------------
123 */
124
125 #define norm_maxw(a) 720
126 #define norm_maxh(a) 576
127
128 #define norm_minw(a) norm_maxw(a)
129 #define norm_minh(a) norm_maxh(a)
130
131 /*
132 * video-buf generic routine to get the next available buffer
133 */
134 static inline void get_next_buf(struct tm6000_dmaqueue *dma_q,
135 struct tm6000_buffer **buf)
136 {
137 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
138 char *outp;
139
140 if (list_empty(&dma_q->active)) {
141 dprintk(dev, V4L2_DEBUG_QUEUE, "No active queue to serve\n");
142 *buf = NULL;
143 return;
144 }
145
146 *buf = list_entry(dma_q->active.next,
147 struct tm6000_buffer, vb.queue);
148
149 if (!buf)
150 return;
151
152 /* Cleans up buffer - Usefull for testing for frame/URB loss */
153 outp = videobuf_to_vmalloc(&(*buf)->vb);
154
155 return;
156 }
157
158 /*
159 * Announces that a buffer were filled and request the next
160 */
161 static inline void buffer_filled(struct tm6000_core *dev,
162 struct tm6000_dmaqueue *dma_q,
163 struct tm6000_buffer *buf)
164 {
165 /* Advice that buffer was filled */
166 dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n", buf, buf->vb.i);
167 buf->vb.state = VIDEOBUF_DONE;
168 buf->vb.field_count++;
169 do_gettimeofday(&buf->vb.ts);
170
171 list_del(&buf->vb.queue);
172 wake_up(&buf->vb.done);
173 }
174
175 const char *tm6000_msg_type[] = {
176 "unknown(0)", /* 0 */
177 "video", /* 1 */
178 "audio", /* 2 */
179 "vbi", /* 3 */
180 "pts", /* 4 */
181 "err", /* 5 */
182 "unknown(6)", /* 6 */
183 "unknown(7)", /* 7 */
184 };
185
186 /*
187 * Identify the tm5600/6000 buffer header type and properly handles
188 */
189 static int copy_streams(u8 *data, unsigned long len,
190 struct urb *urb)
191 {
192 struct tm6000_dmaqueue *dma_q = urb->context;
193 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
194 u8 *ptr = data, *endp = data+len, c;
195 unsigned long header = 0;
196 int rc = 0;
197 unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
198 struct tm6000_buffer *vbuf;
199 char *voutp = NULL;
200 unsigned int linewidth;
201
202 /* get video buffer */
203 get_next_buf(dma_q, &vbuf);
204 if (!vbuf)
205 return rc;
206 voutp = videobuf_to_vmalloc(&vbuf->vb);
207 if (!voutp)
208 return 0;
209
210 for (ptr = data; ptr < endp;) {
211 if (!dev->isoc_ctl.cmd) {
212 /* Header */
213 if (dev->isoc_ctl.tmp_buf_len > 0) {
214 /* from last urb or packet */
215 header = dev->isoc_ctl.tmp_buf;
216 if (4 - dev->isoc_ctl.tmp_buf_len > 0) {
217 memcpy((u8 *)&header +
218 dev->isoc_ctl.tmp_buf_len,
219 ptr,
220 4 - dev->isoc_ctl.tmp_buf_len);
221 ptr += 4 - dev->isoc_ctl.tmp_buf_len;
222 }
223 dev->isoc_ctl.tmp_buf_len = 0;
224 } else {
225 if (ptr + 3 >= endp) {
226 /* have incomplete header */
227 dev->isoc_ctl.tmp_buf_len = endp - ptr;
228 memcpy(&dev->isoc_ctl.tmp_buf, ptr,
229 dev->isoc_ctl.tmp_buf_len);
230 return rc;
231 }
232 /* Seek for sync */
233 for (; ptr < endp - 3; ptr++) {
234 if (*(ptr + 3) == 0x47)
235 break;
236 }
237 /* Get message header */
238 header = *(unsigned long *)ptr;
239 ptr += 4;
240 }
241
242 /* split the header fields */
243 c = (header >> 24) & 0xff;
244 size = ((header & 0x7e) << 1);
245 if (size > 0)
246 size -= 4;
247 block = (header >> 7) & 0xf;
248 field = (header >> 11) & 0x1;
249 line = (header >> 12) & 0x1ff;
250 cmd = (header >> 21) & 0x7;
251 /* Validates haeder fields */
252 if (size > TM6000_URB_MSG_LEN)
253 size = TM6000_URB_MSG_LEN;
254 pktsize = TM6000_URB_MSG_LEN;
255 /* calculate position in buffer
256 * and change the buffer
257 */
258 switch (cmd) {
259 case TM6000_URB_MSG_VIDEO:
260 if ((dev->isoc_ctl.vfield != field) &&
261 (field == 1)) {
262 /* Announces that a new buffer
263 * were filled
264 */
265 buffer_filled(dev, dma_q, vbuf);
266 dprintk(dev, V4L2_DEBUG_ISOC,
267 "new buffer filled\n");
268 get_next_buf(dma_q, &vbuf);
269 if (!vbuf)
270 return rc;
271 voutp = videobuf_to_vmalloc(&vbuf->vb);
272 if (!voutp)
273 return rc;
274 memset(voutp, 0, vbuf->vb.size);
275 }
276 linewidth = vbuf->vb.width << 1;
277 pos = ((line << 1) - field - 1) * linewidth +
278 block * TM6000_URB_MSG_LEN;
279 /* Don't allow to write out of the buffer */
280 if (pos + size > vbuf->vb.size)
281 cmd = TM6000_URB_MSG_ERR;
282 dev->isoc_ctl.vfield = field;
283 break;
284 case TM6000_URB_MSG_VBI:
285 break;
286 case TM6000_URB_MSG_AUDIO:
287 case TM6000_URB_MSG_PTS:
288 size = pktsize; /* Size is always 180 bytes */
289 break;
290 }
291 } else {
292 /* Continue the last copy */
293 cmd = dev->isoc_ctl.cmd;
294 size = dev->isoc_ctl.size;
295 pos = dev->isoc_ctl.pos;
296 pktsize = dev->isoc_ctl.pktsize;
297 }
298 cpysize = (endp - ptr > size) ? size : endp - ptr;
299 if (cpysize) {
300 /* copy data in different buffers */
301 switch (cmd) {
302 case TM6000_URB_MSG_VIDEO:
303 /* Fills video buffer */
304 if (vbuf)
305 memcpy(&voutp[pos], ptr, cpysize);
306 break;
307 case TM6000_URB_MSG_AUDIO:
308 /* Need some code to copy audio buffer */
309 if (dev->fourcc == V4L2_PIX_FMT_YUYV) {
310 /* Swap word bytes */
311 int i;
312
313 for (i = 0; i < cpysize; i += 2)
314 swab16s((u16 *)(ptr + i));
315 }
316 tm6000_call_fillbuf(dev, TM6000_AUDIO, ptr, cpysize);
317 break;
318 case TM6000_URB_MSG_VBI:
319 /* Need some code to copy vbi buffer */
320 break;
321 case TM6000_URB_MSG_PTS:
322 /* Need some code to copy pts */
323 break;
324 }
325 }
326 if (ptr + pktsize > endp) {
327 /* End of URB packet, but cmd processing is not
328 * complete. Preserve the state for a next packet
329 */
330 dev->isoc_ctl.pos = pos + cpysize;
331 dev->isoc_ctl.size = size - cpysize;
332 dev->isoc_ctl.cmd = cmd;
333 dev->isoc_ctl.pktsize = pktsize - (endp - ptr);
334 ptr += endp - ptr;
335 } else {
336 dev->isoc_ctl.cmd = 0;
337 ptr += pktsize;
338 }
339 }
340 return 0;
341 }
342
343 /*
344 * Identify the tm5600/6000 buffer header type and properly handles
345 */
346 static int copy_multiplexed(u8 *ptr, unsigned long len,
347 struct urb *urb)
348 {
349 struct tm6000_dmaqueue *dma_q = urb->context;
350 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
351 unsigned int pos = dev->isoc_ctl.pos, cpysize;
352 int rc = 1;
353 struct tm6000_buffer *buf;
354 char *outp = NULL;
355
356 get_next_buf(dma_q, &buf);
357 if (buf)
358 outp = videobuf_to_vmalloc(&buf->vb);
359
360 if (!outp)
361 return 0;
362
363 while (len > 0) {
364 cpysize = min(len, buf->vb.size-pos);
365 memcpy(&outp[pos], ptr, cpysize);
366 pos += cpysize;
367 ptr += cpysize;
368 len -= cpysize;
369 if (pos >= buf->vb.size) {
370 pos = 0;
371 /* Announces that a new buffer were filled */
372 buffer_filled(dev, dma_q, buf);
373 dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
374 get_next_buf(dma_q, &buf);
375 if (!buf)
376 break;
377 outp = videobuf_to_vmalloc(&(buf->vb));
378 if (!outp)
379 return rc;
380 pos = 0;
381 }
382 }
383
384 dev->isoc_ctl.pos = pos;
385 return rc;
386 }
387
388 static inline void print_err_status(struct tm6000_core *dev,
389 int packet, int status)
390 {
391 char *errmsg = "Unknown";
392
393 switch (status) {
394 case -ENOENT:
395 errmsg = "unlinked synchronuously";
396 break;
397 case -ECONNRESET:
398 errmsg = "unlinked asynchronuously";
399 break;
400 case -ENOSR:
401 errmsg = "Buffer error (overrun)";
402 break;
403 case -EPIPE:
404 errmsg = "Stalled (device not responding)";
405 break;
406 case -EOVERFLOW:
407 errmsg = "Babble (bad cable?)";
408 break;
409 case -EPROTO:
410 errmsg = "Bit-stuff error (bad cable?)";
411 break;
412 case -EILSEQ:
413 errmsg = "CRC/Timeout (could be anything)";
414 break;
415 case -ETIME:
416 errmsg = "Device does not respond";
417 break;
418 }
419 if (packet < 0) {
420 dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
421 status, errmsg);
422 } else {
423 dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n",
424 packet, status, errmsg);
425 }
426 }
427
428
429 /*
430 * Controls the isoc copy of each urb packet
431 */
432 static inline int tm6000_isoc_copy(struct urb *urb)
433 {
434 struct tm6000_dmaqueue *dma_q = urb->context;
435 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
436 int i, len = 0, rc = 1, status;
437 char *p;
438
439 if (urb->status < 0) {
440 print_err_status(dev, -1, urb->status);
441 return 0;
442 }
443
444 for (i = 0; i < urb->number_of_packets; i++) {
445 status = urb->iso_frame_desc[i].status;
446
447 if (status < 0) {
448 print_err_status(dev, i, status);
449 continue;
450 }
451
452 len = urb->iso_frame_desc[i].actual_length;
453
454 if (len > 0) {
455 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
456 if (!urb->iso_frame_desc[i].status) {
457 if ((dev->fourcc) == V4L2_PIX_FMT_TM6000) {
458 rc = copy_multiplexed(p, len, urb);
459 if (rc <= 0)
460 return rc;
461 } else {
462 copy_streams(p, len, urb);
463 }
464 }
465 }
466 }
467 return rc;
468 }
469
470 /* ------------------------------------------------------------------
471 * URB control
472 * ------------------------------------------------------------------
473 */
474
475 /*
476 * IRQ callback, called by URB callback
477 */
478 static void tm6000_irq_callback(struct urb *urb)
479 {
480 struct tm6000_dmaqueue *dma_q = urb->context;
481 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
482 int i;
483
484 if (!dev)
485 return;
486
487 spin_lock(&dev->slock);
488 tm6000_isoc_copy(urb);
489 spin_unlock(&dev->slock);
490
491 /* Reset urb buffers */
492 for (i = 0; i < urb->number_of_packets; i++) {
493 urb->iso_frame_desc[i].status = 0;
494 urb->iso_frame_desc[i].actual_length = 0;
495 }
496
497 urb->status = usb_submit_urb(urb, GFP_ATOMIC);
498 if (urb->status)
499 tm6000_err("urb resubmit failed (error=%i)\n",
500 urb->status);
501 }
502
503 /*
504 * Stop and Deallocate URBs
505 */
506 static void tm6000_uninit_isoc(struct tm6000_core *dev)
507 {
508 struct urb *urb;
509 int i;
510
511 dev->isoc_ctl.buf = NULL;
512 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
513 urb = dev->isoc_ctl.urb[i];
514 if (urb) {
515 usb_kill_urb(urb);
516 usb_unlink_urb(urb);
517 if (dev->isoc_ctl.transfer_buffer[i]) {
518 usb_free_coherent(dev->udev,
519 urb->transfer_buffer_length,
520 dev->isoc_ctl.transfer_buffer[i],
521 urb->transfer_dma);
522 }
523 usb_free_urb(urb);
524 dev->isoc_ctl.urb[i] = NULL;
525 }
526 dev->isoc_ctl.transfer_buffer[i] = NULL;
527 }
528
529 kfree(dev->isoc_ctl.urb);
530 kfree(dev->isoc_ctl.transfer_buffer);
531
532 dev->isoc_ctl.urb = NULL;
533 dev->isoc_ctl.transfer_buffer = NULL;
534 dev->isoc_ctl.num_bufs = 0;
535 }
536
537 /*
538 * Allocate URBs and start IRQ
539 */
540 static int tm6000_prepare_isoc(struct tm6000_core *dev, unsigned int framesize)
541 {
542 struct tm6000_dmaqueue *dma_q = &dev->vidq;
543 int i, j, sb_size, pipe, size, max_packets, num_bufs = 8;
544 struct urb *urb;
545
546 /* De-allocates all pending stuff */
547 tm6000_uninit_isoc(dev);
548
549 usb_set_interface(dev->udev,
550 dev->isoc_in.bInterfaceNumber,
551 dev->isoc_in.bAlternateSetting);
552
553 pipe = usb_rcvisocpipe(dev->udev,
554 dev->isoc_in.endp->desc.bEndpointAddress &
555 USB_ENDPOINT_NUMBER_MASK);
556
557 size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
558
559 if (size > dev->isoc_in.maxsize)
560 size = dev->isoc_in.maxsize;
561
562 dev->isoc_ctl.max_pkt_size = size;
563
564 max_packets = (framesize + size - 1) / size;
565
566 if (max_packets > TM6000_MAX_ISO_PACKETS)
567 max_packets = TM6000_MAX_ISO_PACKETS;
568
569 sb_size = max_packets * size;
570
571 dev->isoc_ctl.num_bufs = num_bufs;
572
573 dev->isoc_ctl.urb = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
574 if (!dev->isoc_ctl.urb) {
575 tm6000_err("cannot alloc memory for usb buffers\n");
576 return -ENOMEM;
577 }
578
579 dev->isoc_ctl.transfer_buffer = kmalloc(sizeof(void *)*num_bufs,
580 GFP_KERNEL);
581 if (!dev->isoc_ctl.transfer_buffer) {
582 tm6000_err("cannot allocate memory for usbtransfer\n");
583 kfree(dev->isoc_ctl.urb);
584 return -ENOMEM;
585 }
586
587 dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets"
588 " (%d bytes) of %d bytes each to handle %u size\n",
589 max_packets, num_bufs, sb_size,
590 dev->isoc_in.maxsize, size);
591
592 /* allocate urbs and transfer buffers */
593 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
594 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
595 if (!urb) {
596 tm6000_err("cannot alloc isoc_ctl.urb %i\n", i);
597 tm6000_uninit_isoc(dev);
598 usb_free_urb(urb);
599 return -ENOMEM;
600 }
601 dev->isoc_ctl.urb[i] = urb;
602
603 dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->udev,
604 sb_size, GFP_KERNEL, &urb->transfer_dma);
605 if (!dev->isoc_ctl.transfer_buffer[i]) {
606 tm6000_err("unable to allocate %i bytes for transfer"
607 " buffer %i%s\n",
608 sb_size, i,
609 in_interrupt() ? " while in int" : "");
610 tm6000_uninit_isoc(dev);
611 return -ENOMEM;
612 }
613 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
614
615 usb_fill_bulk_urb(urb, dev->udev, pipe,
616 dev->isoc_ctl.transfer_buffer[i], sb_size,
617 tm6000_irq_callback, dma_q);
618 urb->interval = dev->isoc_in.endp->desc.bInterval;
619 urb->number_of_packets = max_packets;
620 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
621
622 for (j = 0; j < max_packets; j++) {
623 urb->iso_frame_desc[j].offset = size * j;
624 urb->iso_frame_desc[j].length = size;
625 }
626 }
627
628 return 0;
629 }
630
631 static int tm6000_start_thread(struct tm6000_core *dev)
632 {
633 struct tm6000_dmaqueue *dma_q = &dev->vidq;
634 int i;
635
636 dma_q->frame = 0;
637 dma_q->ini_jiffies = jiffies;
638
639 init_waitqueue_head(&dma_q->wq);
640
641 /* submit urbs and enables IRQ */
642 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
643 int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
644 if (rc) {
645 tm6000_err("submit of urb %i failed (error=%i)\n", i,
646 rc);
647 tm6000_uninit_isoc(dev);
648 return rc;
649 }
650 }
651
652 return 0;
653 }
654
655 /* ------------------------------------------------------------------
656 * Videobuf operations
657 * ------------------------------------------------------------------
658 */
659
660 static int
661 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
662 {
663 struct tm6000_fh *fh = vq->priv_data;
664
665 *size = fh->fmt->depth * fh->width * fh->height >> 3;
666 if (0 == *count)
667 *count = TM6000_DEF_BUF;
668
669 if (*count < TM6000_MIN_BUF)
670 *count = TM6000_MIN_BUF;
671
672 while (*size * *count > vid_limit * 1024 * 1024)
673 (*count)--;
674
675 return 0;
676 }
677
678 static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf)
679 {
680 struct tm6000_fh *fh = vq->priv_data;
681 struct tm6000_core *dev = fh->dev;
682 unsigned long flags;
683
684 if (in_interrupt())
685 BUG();
686
687 /* We used to wait for the buffer to finish here, but this didn't work
688 because, as we were keeping the state as VIDEOBUF_QUEUED,
689 videobuf_queue_cancel marked it as finished for us.
690 (Also, it could wedge forever if the hardware was misconfigured.)
691
692 This should be safe; by the time we get here, the buffer isn't
693 queued anymore. If we ever start marking the buffers as
694 VIDEOBUF_ACTIVE, it won't be, though.
695 */
696 spin_lock_irqsave(&dev->slock, flags);
697 if (dev->isoc_ctl.buf == buf)
698 dev->isoc_ctl.buf = NULL;
699 spin_unlock_irqrestore(&dev->slock, flags);
700
701 videobuf_vmalloc_free(&buf->vb);
702 buf->vb.state = VIDEOBUF_NEEDS_INIT;
703 }
704
705 static int
706 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
707 enum v4l2_field field)
708 {
709 struct tm6000_fh *fh = vq->priv_data;
710 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
711 struct tm6000_core *dev = fh->dev;
712 int rc = 0, urb_init = 0;
713
714 BUG_ON(NULL == fh->fmt);
715
716
717 /* FIXME: It assumes depth=2 */
718 /* The only currently supported format is 16 bits/pixel */
719 buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
720 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
721 return -EINVAL;
722
723 if (buf->fmt != fh->fmt ||
724 buf->vb.width != fh->width ||
725 buf->vb.height != fh->height ||
726 buf->vb.field != field) {
727 buf->fmt = fh->fmt;
728 buf->vb.width = fh->width;
729 buf->vb.height = fh->height;
730 buf->vb.field = field;
731 buf->vb.state = VIDEOBUF_NEEDS_INIT;
732 }
733
734 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
735 if (0 != (rc = videobuf_iolock(vq, &buf->vb, NULL)))
736 goto fail;
737 urb_init = 1;
738 }
739
740 if (!dev->isoc_ctl.num_bufs)
741 urb_init = 1;
742
743 if (urb_init) {
744 rc = tm6000_prepare_isoc(dev, buf->vb.size);
745 if (rc < 0)
746 goto fail;
747
748 rc = tm6000_start_thread(dev);
749 if (rc < 0)
750 goto fail;
751
752 }
753
754 buf->vb.state = VIDEOBUF_PREPARED;
755 return 0;
756
757 fail:
758 free_buffer(vq, buf);
759 return rc;
760 }
761
762 static void
763 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
764 {
765 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
766 struct tm6000_fh *fh = vq->priv_data;
767 struct tm6000_core *dev = fh->dev;
768 struct tm6000_dmaqueue *vidq = &dev->vidq;
769
770 buf->vb.state = VIDEOBUF_QUEUED;
771 list_add_tail(&buf->vb.queue, &vidq->active);
772 }
773
774 static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
775 {
776 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
777
778 free_buffer(vq, buf);
779 }
780
781 static struct videobuf_queue_ops tm6000_video_qops = {
782 .buf_setup = buffer_setup,
783 .buf_prepare = buffer_prepare,
784 .buf_queue = buffer_queue,
785 .buf_release = buffer_release,
786 };
787
788 /* ------------------------------------------------------------------
789 * IOCTL handling
790 * ------------------------------------------------------------------
791 */
792
793 static bool is_res_read(struct tm6000_core *dev, struct tm6000_fh *fh)
794 {
795 /* Is the current fh handling it? if so, that's OK */
796 if (dev->resources == fh && dev->is_res_read)
797 return true;
798
799 return false;
800 }
801
802 static bool is_res_streaming(struct tm6000_core *dev, struct tm6000_fh *fh)
803 {
804 /* Is the current fh handling it? if so, that's OK */
805 if (dev->resources == fh)
806 return true;
807
808 return false;
809 }
810
811 static bool res_get(struct tm6000_core *dev, struct tm6000_fh *fh,
812 bool is_res_read)
813 {
814 /* Is the current fh handling it? if so, that's OK */
815 if (dev->resources == fh && dev->is_res_read == is_res_read)
816 return true;
817
818 /* is it free? */
819 if (dev->resources)
820 return false;
821
822 /* grab it */
823 dev->resources = fh;
824 dev->is_res_read = is_res_read;
825 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
826 return true;
827 }
828
829 static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
830 {
831 /* Is the current fh handling it? if so, that's OK */
832 if (dev->resources != fh)
833 return;
834
835 dev->resources = NULL;
836 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
837 }
838
839 /* ------------------------------------------------------------------
840 * IOCTL vidioc handling
841 * ------------------------------------------------------------------
842 */
843 static int vidioc_querycap(struct file *file, void *priv,
844 struct v4l2_capability *cap)
845 {
846
847 strlcpy(cap->driver, "tm6000", sizeof(cap->driver));
848 strlcpy(cap->card, "Trident TVMaster TM5600/6000/6010", sizeof(cap->card));
849 cap->version = TM6000_VERSION;
850 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
851 V4L2_CAP_STREAMING |
852 V4L2_CAP_TUNER |
853 V4L2_CAP_READWRITE;
854 return 0;
855 }
856
857 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
858 struct v4l2_fmtdesc *f)
859 {
860 if (unlikely(f->index >= ARRAY_SIZE(format)))
861 return -EINVAL;
862
863 strlcpy(f->description, format[f->index].name, sizeof(f->description));
864 f->pixelformat = format[f->index].fourcc;
865 return 0;
866 }
867
868 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
869 struct v4l2_format *f)
870 {
871 struct tm6000_fh *fh = priv;
872
873 f->fmt.pix.width = fh->width;
874 f->fmt.pix.height = fh->height;
875 f->fmt.pix.field = fh->vb_vidq.field;
876 f->fmt.pix.pixelformat = fh->fmt->fourcc;
877 f->fmt.pix.bytesperline =
878 (f->fmt.pix.width * fh->fmt->depth) >> 3;
879 f->fmt.pix.sizeimage =
880 f->fmt.pix.height * f->fmt.pix.bytesperline;
881
882 return 0;
883 }
884
885 static struct tm6000_fmt *format_by_fourcc(unsigned int fourcc)
886 {
887 unsigned int i;
888
889 for (i = 0; i < ARRAY_SIZE(format); i++)
890 if (format[i].fourcc == fourcc)
891 return format+i;
892 return NULL;
893 }
894
895 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
896 struct v4l2_format *f)
897 {
898 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
899 struct tm6000_fmt *fmt;
900 enum v4l2_field field;
901
902 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
903 if (NULL == fmt) {
904 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Fourcc format (0x%08x)"
905 " invalid.\n", f->fmt.pix.pixelformat);
906 return -EINVAL;
907 }
908
909 field = f->fmt.pix.field;
910
911 if (field == V4L2_FIELD_ANY)
912 field = V4L2_FIELD_SEQ_TB;
913 else if (V4L2_FIELD_INTERLACED != field) {
914 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Field type invalid.\n");
915 return -EINVAL;
916 }
917
918 tm6000_get_std_res(dev);
919
920 f->fmt.pix.width = dev->width;
921 f->fmt.pix.height = dev->height;
922
923 f->fmt.pix.width &= ~0x01;
924
925 f->fmt.pix.field = field;
926
927 f->fmt.pix.bytesperline =
928 (f->fmt.pix.width * fmt->depth) >> 3;
929 f->fmt.pix.sizeimage =
930 f->fmt.pix.height * f->fmt.pix.bytesperline;
931
932 return 0;
933 }
934
935 /*FIXME: This seems to be generic enough to be at videodev2 */
936 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
937 struct v4l2_format *f)
938 {
939 struct tm6000_fh *fh = priv;
940 struct tm6000_core *dev = fh->dev;
941 int ret = vidioc_try_fmt_vid_cap(file, fh, f);
942 if (ret < 0)
943 return ret;
944
945 fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
946 fh->width = f->fmt.pix.width;
947 fh->height = f->fmt.pix.height;
948 fh->vb_vidq.field = f->fmt.pix.field;
949 fh->type = f->type;
950
951 dev->fourcc = f->fmt.pix.pixelformat;
952
953 tm6000_set_fourcc_format(dev);
954
955 return 0;
956 }
957
958 static int vidioc_reqbufs(struct file *file, void *priv,
959 struct v4l2_requestbuffers *p)
960 {
961 struct tm6000_fh *fh = priv;
962
963 return videobuf_reqbufs(&fh->vb_vidq, p);
964 }
965
966 static int vidioc_querybuf(struct file *file, void *priv,
967 struct v4l2_buffer *p)
968 {
969 struct tm6000_fh *fh = priv;
970
971 return videobuf_querybuf(&fh->vb_vidq, p);
972 }
973
974 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
975 {
976 struct tm6000_fh *fh = priv;
977
978 return videobuf_qbuf(&fh->vb_vidq, p);
979 }
980
981 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
982 {
983 struct tm6000_fh *fh = priv;
984
985 return videobuf_dqbuf(&fh->vb_vidq, p,
986 file->f_flags & O_NONBLOCK);
987 }
988
989 #ifdef CONFIG_VIDEO_V4L1_COMPAT
990 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
991 {
992 struct tm6000_fh *fh = priv;
993
994 return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
995 }
996 #endif
997
998 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
999 {
1000 struct tm6000_fh *fh = priv;
1001 struct tm6000_core *dev = fh->dev;
1002
1003 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1004 return -EINVAL;
1005 if (i != fh->type)
1006 return -EINVAL;
1007
1008 if (!res_get(dev, fh, false))
1009 return -EBUSY;
1010 return (videobuf_streamon(&fh->vb_vidq));
1011 }
1012
1013 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
1014 {
1015 struct tm6000_fh *fh=priv;
1016 struct tm6000_core *dev = fh->dev;
1017
1018 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1019 return -EINVAL;
1020 if (i != fh->type)
1021 return -EINVAL;
1022
1023 videobuf_streamoff(&fh->vb_vidq);
1024 res_free(dev,fh);
1025
1026 return (0);
1027 }
1028
1029 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *norm)
1030 {
1031 int rc=0;
1032 struct tm6000_fh *fh=priv;
1033 struct tm6000_core *dev = fh->dev;
1034
1035 dev->norm = *norm;
1036 rc = tm6000_init_analog_mode(dev);
1037
1038 fh->width = dev->width;
1039 fh->height = dev->height;
1040
1041 if (rc<0)
1042 return rc;
1043
1044 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1045
1046 return 0;
1047 }
1048
1049 static int vidioc_enum_input(struct file *file, void *priv,
1050 struct v4l2_input *inp)
1051 {
1052 switch (inp->index) {
1053 case TM6000_INPUT_TV:
1054 inp->type = V4L2_INPUT_TYPE_TUNER;
1055 strcpy(inp->name, "Television");
1056 break;
1057 case TM6000_INPUT_COMPOSITE:
1058 inp->type = V4L2_INPUT_TYPE_CAMERA;
1059 strcpy(inp->name, "Composite");
1060 break;
1061 case TM6000_INPUT_SVIDEO:
1062 inp->type = V4L2_INPUT_TYPE_CAMERA;
1063 strcpy(inp->name, "S-Video");
1064 break;
1065 default:
1066 return -EINVAL;
1067 }
1068 inp->std = TM6000_STD;
1069
1070 return 0;
1071 }
1072
1073 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1074 {
1075 struct tm6000_fh *fh = priv;
1076 struct tm6000_core *dev = fh->dev;
1077
1078 *i = dev->input;
1079
1080 return 0;
1081 }
1082 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1083 {
1084 struct tm6000_fh *fh = priv;
1085 struct tm6000_core *dev = fh->dev;
1086 int rc = 0;
1087 char buf[1];
1088
1089 switch (i) {
1090 case TM6000_INPUT_TV:
1091 dev->input = i;
1092 *buf = 0;
1093 break;
1094 case TM6000_INPUT_COMPOSITE:
1095 case TM6000_INPUT_SVIDEO:
1096 dev->input = i;
1097 *buf = 1;
1098 break;
1099 default:
1100 return -EINVAL;
1101 }
1102 rc = tm6000_read_write_usb(dev, USB_DIR_OUT | USB_TYPE_VENDOR,
1103 REQ_03_SET_GET_MCU_PIN, 0x03, 1, buf, 1);
1104
1105 if (!rc) {
1106 dev->input = i;
1107 rc = vidioc_s_std(file, priv, &dev->vfd->current_norm);
1108 }
1109
1110 return rc;
1111 }
1112
1113 /* --- controls ---------------------------------------------- */
1114 static int vidioc_queryctrl(struct file *file, void *priv,
1115 struct v4l2_queryctrl *qc)
1116 {
1117 int i;
1118
1119 for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
1120 if (qc->id && qc->id == tm6000_qctrl[i].id) {
1121 memcpy(qc, &(tm6000_qctrl[i]),
1122 sizeof(*qc));
1123 return 0;
1124 }
1125
1126 return -EINVAL;
1127 }
1128
1129 static int vidioc_g_ctrl(struct file *file, void *priv,
1130 struct v4l2_control *ctrl)
1131 {
1132 struct tm6000_fh *fh = priv;
1133 struct tm6000_core *dev = fh->dev;
1134 int val;
1135
1136 /* FIXME: Probably, those won't work! Maybe we need shadow regs */
1137 switch (ctrl->id) {
1138 case V4L2_CID_CONTRAST:
1139 val = tm6000_get_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, 0);
1140 break;
1141 case V4L2_CID_BRIGHTNESS:
1142 val = tm6000_get_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, 0);
1143 return 0;
1144 case V4L2_CID_SATURATION:
1145 val = tm6000_get_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, 0);
1146 return 0;
1147 case V4L2_CID_HUE:
1148 val = tm6000_get_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, 0);
1149 return 0;
1150 default:
1151 return -EINVAL;
1152 }
1153
1154 if (val < 0)
1155 return val;
1156
1157 ctrl->value = val;
1158
1159 return 0;
1160 }
1161 static int vidioc_s_ctrl(struct file *file, void *priv,
1162 struct v4l2_control *ctrl)
1163 {
1164 struct tm6000_fh *fh = priv;
1165 struct tm6000_core *dev = fh->dev;
1166 u8 val = ctrl->value;
1167
1168 switch (ctrl->id) {
1169 case V4L2_CID_CONTRAST:
1170 tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val);
1171 return 0;
1172 case V4L2_CID_BRIGHTNESS:
1173 tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val);
1174 return 0;
1175 case V4L2_CID_SATURATION:
1176 tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val);
1177 return 0;
1178 case V4L2_CID_HUE:
1179 tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val);
1180 return 0;
1181 }
1182 return -EINVAL;
1183 }
1184
1185 static int vidioc_g_tuner(struct file *file, void *priv,
1186 struct v4l2_tuner *t)
1187 {
1188 struct tm6000_fh *fh = priv;
1189 struct tm6000_core *dev = fh->dev;
1190
1191 if (unlikely(UNSET == dev->tuner_type))
1192 return -EINVAL;
1193 if (0 != t->index)
1194 return -EINVAL;
1195
1196 strcpy(t->name, "Television");
1197 t->type = V4L2_TUNER_ANALOG_TV;
1198 t->capability = V4L2_TUNER_CAP_NORM;
1199 t->rangehigh = 0xffffffffUL;
1200 t->rxsubchans = V4L2_TUNER_SUB_MONO;
1201
1202 return 0;
1203 }
1204
1205 static int vidioc_s_tuner(struct file *file, void *priv,
1206 struct v4l2_tuner *t)
1207 {
1208 struct tm6000_fh *fh = priv;
1209 struct tm6000_core *dev = fh->dev;
1210
1211 if (UNSET == dev->tuner_type)
1212 return -EINVAL;
1213 if (0 != t->index)
1214 return -EINVAL;
1215
1216 return 0;
1217 }
1218
1219 static int vidioc_g_frequency(struct file *file, void *priv,
1220 struct v4l2_frequency *f)
1221 {
1222 struct tm6000_fh *fh = priv;
1223 struct tm6000_core *dev = fh->dev;
1224
1225 if (unlikely(UNSET == dev->tuner_type))
1226 return -EINVAL;
1227
1228 f->type = V4L2_TUNER_ANALOG_TV;
1229 f->frequency = dev->freq;
1230
1231 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
1232
1233 return 0;
1234 }
1235
1236 static int vidioc_s_frequency(struct file *file, void *priv,
1237 struct v4l2_frequency *f)
1238 {
1239 struct tm6000_fh *fh = priv;
1240 struct tm6000_core *dev = fh->dev;
1241
1242 if (unlikely(f->type != V4L2_TUNER_ANALOG_TV))
1243 return -EINVAL;
1244
1245 if (unlikely(UNSET == dev->tuner_type))
1246 return -EINVAL;
1247 if (unlikely(f->tuner != 0))
1248 return -EINVAL;
1249
1250 dev->freq = f->frequency;
1251 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1252
1253 return 0;
1254 }
1255
1256 /* ------------------------------------------------------------------
1257 File operations for the device
1258 ------------------------------------------------------------------*/
1259
1260 static int tm6000_open(struct file *file)
1261 {
1262 struct video_device *vdev = video_devdata(file);
1263 struct tm6000_core *dev = video_drvdata(file);
1264 struct tm6000_fh *fh;
1265 enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1266 int i, rc;
1267
1268 printk(KERN_INFO "tm6000: open called (dev=%s)\n",
1269 video_device_node_name(vdev));
1270
1271 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
1272 video_device_node_name(vdev));
1273
1274
1275 /* If more than one user, mutex should be added */
1276 dev->users++;
1277
1278 dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
1279 video_device_node_name(vdev), v4l2_type_names[type],
1280 dev->users);
1281
1282 /* allocate + initialize per filehandle data */
1283 fh = kzalloc(sizeof(*fh), GFP_KERNEL);
1284 if (NULL == fh) {
1285 dev->users--;
1286 return -ENOMEM;
1287 }
1288
1289 file->private_data = fh;
1290 fh->dev = dev;
1291
1292 fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1293 dev->fourcc = format[0].fourcc;
1294
1295 fh->fmt = format_by_fourcc(dev->fourcc);
1296
1297 tm6000_get_std_res (dev);
1298
1299 fh->width = dev->width;
1300 fh->height = dev->height;
1301
1302 dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=0x%08lx, dev=0x%08lx, "
1303 "dev->vidq=0x%08lx\n",
1304 (unsigned long)fh,(unsigned long)dev,(unsigned long)&dev->vidq);
1305 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1306 "queued=%d\n",list_empty(&dev->vidq.queued));
1307 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1308 "active=%d\n",list_empty(&dev->vidq.active));
1309
1310 /* initialize hardware on analog mode */
1311 rc = tm6000_init_analog_mode(dev);
1312 if (rc < 0)
1313 return rc;
1314
1315 if (dev->mode != TM6000_MODE_ANALOG) {
1316 /* Put all controls at a sane state */
1317 for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
1318 qctl_regs[i] = tm6000_qctrl[i].default_value;
1319
1320 dev->mode = TM6000_MODE_ANALOG;
1321 }
1322
1323 videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
1324 NULL, &dev->slock,
1325 fh->type,
1326 V4L2_FIELD_INTERLACED,
1327 sizeof(struct tm6000_buffer), fh, &dev->lock);
1328
1329 return 0;
1330 }
1331
1332 static ssize_t
1333 tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
1334 {
1335 struct tm6000_fh *fh = file->private_data;
1336
1337 if (fh->type==V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1338 if (!res_get(fh->dev, fh, true))
1339 return -EBUSY;
1340
1341 return videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
1342 file->f_flags & O_NONBLOCK);
1343 }
1344 return 0;
1345 }
1346
1347 static unsigned int
1348 tm6000_poll(struct file *file, struct poll_table_struct *wait)
1349 {
1350 struct tm6000_fh *fh = file->private_data;
1351 struct tm6000_buffer *buf;
1352
1353 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1354 return POLLERR;
1355
1356 if (!!is_res_streaming(fh->dev, fh))
1357 return POLLERR;
1358
1359 if (!is_res_read(fh->dev, fh)) {
1360 /* streaming capture */
1361 if (list_empty(&fh->vb_vidq.stream))
1362 return POLLERR;
1363 buf = list_entry(fh->vb_vidq.stream.next,struct tm6000_buffer,vb.stream);
1364 } else {
1365 /* read() capture */
1366 return videobuf_poll_stream(file, &fh->vb_vidq,
1367 wait);
1368 }
1369 poll_wait(file, &buf->vb.done, wait);
1370 if (buf->vb.state == VIDEOBUF_DONE ||
1371 buf->vb.state == VIDEOBUF_ERROR)
1372 return POLLIN | POLLRDNORM;
1373 return 0;
1374 }
1375
1376 static int tm6000_release(struct file *file)
1377 {
1378 struct tm6000_fh *fh = file->private_data;
1379 struct tm6000_core *dev = fh->dev;
1380 struct video_device *vdev = video_devdata(file);
1381
1382 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
1383 video_device_node_name(vdev), dev->users);
1384
1385 dev->users--;
1386
1387 res_free(dev, fh);
1388 if (!dev->users) {
1389 tm6000_uninit_isoc(dev);
1390 videobuf_mmap_free(&fh->vb_vidq);
1391 }
1392
1393 kfree(fh);
1394
1395 return 0;
1396 }
1397
1398 static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
1399 {
1400 struct tm6000_fh *fh = file->private_data;
1401 int ret;
1402
1403 ret = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1404
1405 return ret;
1406 }
1407
1408 static struct v4l2_file_operations tm6000_fops = {
1409 .owner = THIS_MODULE,
1410 .open = tm6000_open,
1411 .release = tm6000_release,
1412 .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
1413 .read = tm6000_read,
1414 .poll = tm6000_poll,
1415 .mmap = tm6000_mmap,
1416 };
1417
1418 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1419 .vidioc_querycap = vidioc_querycap,
1420 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1421 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1422 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1423 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1424 .vidioc_s_std = vidioc_s_std,
1425 .vidioc_enum_input = vidioc_enum_input,
1426 .vidioc_g_input = vidioc_g_input,
1427 .vidioc_s_input = vidioc_s_input,
1428 .vidioc_queryctrl = vidioc_queryctrl,
1429 .vidioc_g_ctrl = vidioc_g_ctrl,
1430 .vidioc_s_ctrl = vidioc_s_ctrl,
1431 .vidioc_g_tuner = vidioc_g_tuner,
1432 .vidioc_s_tuner = vidioc_s_tuner,
1433 .vidioc_g_frequency = vidioc_g_frequency,
1434 .vidioc_s_frequency = vidioc_s_frequency,
1435 .vidioc_streamon = vidioc_streamon,
1436 .vidioc_streamoff = vidioc_streamoff,
1437 .vidioc_reqbufs = vidioc_reqbufs,
1438 .vidioc_querybuf = vidioc_querybuf,
1439 .vidioc_qbuf = vidioc_qbuf,
1440 .vidioc_dqbuf = vidioc_dqbuf,
1441 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1442 .vidiocgmbuf = vidiocgmbuf,
1443 #endif
1444 };
1445
1446 static struct video_device tm6000_template = {
1447 .name = "tm6000",
1448 .fops = &tm6000_fops,
1449 .ioctl_ops = &video_ioctl_ops,
1450 .release = video_device_release,
1451 .tvnorms = TM6000_STD,
1452 .current_norm = V4L2_STD_NTSC_M,
1453 };
1454
1455 /* -----------------------------------------------------------------
1456 * Initialization and module stuff
1457 * ------------------------------------------------------------------
1458 */
1459
1460 int tm6000_v4l2_register(struct tm6000_core *dev)
1461 {
1462 int ret = -1;
1463 struct video_device *vfd;
1464
1465 vfd = video_device_alloc();
1466 if(!vfd) {
1467 return -ENOMEM;
1468 }
1469 dev->vfd = vfd;
1470
1471 /* init video dma queues */
1472 INIT_LIST_HEAD(&dev->vidq.active);
1473 INIT_LIST_HEAD(&dev->vidq.queued);
1474
1475 memcpy(dev->vfd, &tm6000_template, sizeof(*(dev->vfd)));
1476 dev->vfd->debug = tm6000_debug;
1477 dev->vfd->lock = &dev->lock;
1478
1479 vfd->v4l2_dev = &dev->v4l2_dev;
1480 video_set_drvdata(vfd, dev);
1481
1482 ret = video_register_device(dev->vfd, VFL_TYPE_GRABBER, video_nr);
1483 printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
1484 return ret;
1485 }
1486
1487 int tm6000_v4l2_unregister(struct tm6000_core *dev)
1488 {
1489 video_unregister_device(dev->vfd);
1490
1491 return 0;
1492 }
1493
1494 int tm6000_v4l2_exit(void)
1495 {
1496 return 0;
1497 }
1498
1499 module_param(video_nr, int, 0);
1500 MODULE_PARM_DESC(video_nr, "Allow changing video device number");
1501
1502 module_param_named(debug, tm6000_debug, int, 0444);
1503 MODULE_PARM_DESC(debug, "activates debug info");
1504
1505 module_param(vid_limit, int, 0644);
1506 MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
1507
kernel source for telekom puls (alcatel/mediatek)