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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
[deliverable/linux.git] / drivers / media / usb / 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
23 #include <linux/module.h>
24 #include <linux/delay.h>
25 #include <linux/errno.h>
26 #include <linux/fs.h>
27 #include <linux/kernel.h>
28 #include <linux/slab.h>
29 #include <linux/mm.h>
30 #include <linux/ioport.h>
31 #include <linux/init.h>
32 #include <linux/sched.h>
33 #include <linux/random.h>
34 #include <linux/usb.h>
35 #include <linux/videodev2.h>
36 #include <media/v4l2-ioctl.h>
37 #include <media/tuner.h>
38 #include <linux/interrupt.h>
39 #include <linux/kthread.h>
40 #include <linux/highmem.h>
41 #include <linux/freezer.h>
42
43 #include "tm6000-regs.h"
44 #include "tm6000.h"
45
46 #define BUFFER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
47
48 /* Limits minimum and default number of buffers */
49 #define TM6000_MIN_BUF 4
50 #define TM6000_DEF_BUF 8
51
52 #define TM6000_MAX_ISO_PACKETS 46 /* Max number of ISO packets */
53
54 /* Declare static vars that will be used as parameters */
55 static unsigned int vid_limit = 16; /* Video memory limit, in Mb */
56 static int video_nr = -1; /* /dev/videoN, -1 for autodetect */
57 static int radio_nr = -1; /* /dev/radioN, -1 for autodetect */
58
59 /* Debug level */
60 int tm6000_debug;
61 EXPORT_SYMBOL_GPL(tm6000_debug);
62
63 static const struct v4l2_queryctrl no_ctrl = {
64 .name = "42",
65 .flags = V4L2_CTRL_FLAG_DISABLED,
66 };
67
68 /* supported controls */
69 static struct v4l2_queryctrl tm6000_qctrl[] = {
70 {
71 .id = V4L2_CID_BRIGHTNESS,
72 .type = V4L2_CTRL_TYPE_INTEGER,
73 .name = "Brightness",
74 .minimum = 0,
75 .maximum = 255,
76 .step = 1,
77 .default_value = 54,
78 .flags = 0,
79 }, {
80 .id = V4L2_CID_CONTRAST,
81 .type = V4L2_CTRL_TYPE_INTEGER,
82 .name = "Contrast",
83 .minimum = 0,
84 .maximum = 255,
85 .step = 0x1,
86 .default_value = 119,
87 .flags = 0,
88 }, {
89 .id = V4L2_CID_SATURATION,
90 .type = V4L2_CTRL_TYPE_INTEGER,
91 .name = "Saturation",
92 .minimum = 0,
93 .maximum = 255,
94 .step = 0x1,
95 .default_value = 112,
96 .flags = 0,
97 }, {
98 .id = V4L2_CID_HUE,
99 .type = V4L2_CTRL_TYPE_INTEGER,
100 .name = "Hue",
101 .minimum = -128,
102 .maximum = 127,
103 .step = 0x1,
104 .default_value = 0,
105 .flags = 0,
106 },
107 /* --- audio --- */
108 {
109 .id = V4L2_CID_AUDIO_MUTE,
110 .name = "Mute",
111 .minimum = 0,
112 .maximum = 1,
113 .type = V4L2_CTRL_TYPE_BOOLEAN,
114 }, {
115 .id = V4L2_CID_AUDIO_VOLUME,
116 .name = "Volume",
117 .minimum = -15,
118 .maximum = 15,
119 .step = 1,
120 .default_value = 0,
121 .type = V4L2_CTRL_TYPE_INTEGER,
122 }
123 };
124
125 static const unsigned int CTRLS = ARRAY_SIZE(tm6000_qctrl);
126 static int qctl_regs[ARRAY_SIZE(tm6000_qctrl)];
127
128 static struct tm6000_fmt format[] = {
129 {
130 .name = "4:2:2, packed, YVY2",
131 .fourcc = V4L2_PIX_FMT_YUYV,
132 .depth = 16,
133 }, {
134 .name = "4:2:2, packed, UYVY",
135 .fourcc = V4L2_PIX_FMT_UYVY,
136 .depth = 16,
137 }, {
138 .name = "A/V + VBI mux packet",
139 .fourcc = V4L2_PIX_FMT_TM6000,
140 .depth = 16,
141 }
142 };
143
144 static const struct v4l2_queryctrl *ctrl_by_id(unsigned int id)
145 {
146 unsigned int i;
147
148 for (i = 0; i < CTRLS; i++)
149 if (tm6000_qctrl[i].id == id)
150 return tm6000_qctrl+i;
151 return NULL;
152 }
153
154 /* ------------------------------------------------------------------
155 * DMA and thread functions
156 * ------------------------------------------------------------------
157 */
158
159 #define norm_maxw(a) 720
160 #define norm_maxh(a) 576
161
162 #define norm_minw(a) norm_maxw(a)
163 #define norm_minh(a) norm_maxh(a)
164
165 /*
166 * video-buf generic routine to get the next available buffer
167 */
168 static inline void get_next_buf(struct tm6000_dmaqueue *dma_q,
169 struct tm6000_buffer **buf)
170 {
171 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
172
173 if (list_empty(&dma_q->active)) {
174 dprintk(dev, V4L2_DEBUG_QUEUE, "No active queue to serve\n");
175 *buf = NULL;
176 return;
177 }
178
179 *buf = list_entry(dma_q->active.next,
180 struct tm6000_buffer, vb.queue);
181 }
182
183 /*
184 * Announces that a buffer were filled and request the next
185 */
186 static inline void buffer_filled(struct tm6000_core *dev,
187 struct tm6000_dmaqueue *dma_q,
188 struct tm6000_buffer *buf)
189 {
190 /* Advice that buffer was filled */
191 dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n", buf, buf->vb.i);
192 buf->vb.state = VIDEOBUF_DONE;
193 buf->vb.field_count++;
194 do_gettimeofday(&buf->vb.ts);
195
196 list_del(&buf->vb.queue);
197 wake_up(&buf->vb.done);
198 }
199
200 /*
201 * Identify the tm5600/6000 buffer header type and properly handles
202 */
203 static int copy_streams(u8 *data, unsigned long len,
204 struct urb *urb)
205 {
206 struct tm6000_dmaqueue *dma_q = urb->context;
207 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
208 u8 *ptr = data, *endp = data+len;
209 unsigned long header = 0;
210 int rc = 0;
211 unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
212 struct tm6000_buffer *vbuf = NULL;
213 char *voutp = NULL;
214 unsigned int linewidth;
215
216 if (!dev->radio) {
217 /* get video buffer */
218 get_next_buf(dma_q, &vbuf);
219
220 if (!vbuf)
221 return rc;
222 voutp = videobuf_to_vmalloc(&vbuf->vb);
223
224 if (!voutp)
225 return 0;
226 }
227
228 for (ptr = data; ptr < endp;) {
229 if (!dev->isoc_ctl.cmd) {
230 /* Header */
231 if (dev->isoc_ctl.tmp_buf_len > 0) {
232 /* from last urb or packet */
233 header = dev->isoc_ctl.tmp_buf;
234 if (4 - dev->isoc_ctl.tmp_buf_len > 0) {
235 memcpy((u8 *)&header +
236 dev->isoc_ctl.tmp_buf_len,
237 ptr,
238 4 - dev->isoc_ctl.tmp_buf_len);
239 ptr += 4 - dev->isoc_ctl.tmp_buf_len;
240 }
241 dev->isoc_ctl.tmp_buf_len = 0;
242 } else {
243 if (ptr + 3 >= endp) {
244 /* have incomplete header */
245 dev->isoc_ctl.tmp_buf_len = endp - ptr;
246 memcpy(&dev->isoc_ctl.tmp_buf, ptr,
247 dev->isoc_ctl.tmp_buf_len);
248 return rc;
249 }
250 /* Seek for sync */
251 for (; ptr < endp - 3; ptr++) {
252 if (*(ptr + 3) == 0x47)
253 break;
254 }
255 /* Get message header */
256 header = *(unsigned long *)ptr;
257 ptr += 4;
258 }
259
260 /* split the header fields */
261 size = ((header & 0x7e) << 1);
262 if (size > 0)
263 size -= 4;
264 block = (header >> 7) & 0xf;
265 field = (header >> 11) & 0x1;
266 line = (header >> 12) & 0x1ff;
267 cmd = (header >> 21) & 0x7;
268 /* Validates haeder fields */
269 if (size > TM6000_URB_MSG_LEN)
270 size = TM6000_URB_MSG_LEN;
271 pktsize = TM6000_URB_MSG_LEN;
272 /*
273 * calculate position in buffer and change the buffer
274 */
275 switch (cmd) {
276 case TM6000_URB_MSG_VIDEO:
277 if (!dev->radio) {
278 if ((dev->isoc_ctl.vfield != field) &&
279 (field == 1)) {
280 /*
281 * Announces that a new buffer
282 * were filled
283 */
284 buffer_filled(dev, dma_q, vbuf);
285 dprintk(dev, V4L2_DEBUG_ISOC,
286 "new buffer filled\n");
287 get_next_buf(dma_q, &vbuf);
288 if (!vbuf)
289 return rc;
290 voutp = videobuf_to_vmalloc(&vbuf->vb);
291 if (!voutp)
292 return rc;
293 memset(voutp, 0, vbuf->vb.size);
294 }
295 linewidth = vbuf->vb.width << 1;
296 pos = ((line << 1) - field - 1) *
297 linewidth + block * TM6000_URB_MSG_LEN;
298 /* Don't allow to write out of the buffer */
299 if (pos + size > vbuf->vb.size)
300 cmd = TM6000_URB_MSG_ERR;
301 dev->isoc_ctl.vfield = field;
302 }
303 break;
304 case TM6000_URB_MSG_VBI:
305 break;
306 case TM6000_URB_MSG_AUDIO:
307 case TM6000_URB_MSG_PTS:
308 size = pktsize; /* Size is always 180 bytes */
309 break;
310 }
311 } else {
312 /* Continue the last copy */
313 cmd = dev->isoc_ctl.cmd;
314 size = dev->isoc_ctl.size;
315 pos = dev->isoc_ctl.pos;
316 pktsize = dev->isoc_ctl.pktsize;
317 field = dev->isoc_ctl.field;
318 }
319 cpysize = (endp - ptr > size) ? size : endp - ptr;
320 if (cpysize) {
321 /* copy data in different buffers */
322 switch (cmd) {
323 case TM6000_URB_MSG_VIDEO:
324 /* Fills video buffer */
325 if (vbuf)
326 memcpy(&voutp[pos], ptr, cpysize);
327 break;
328 case TM6000_URB_MSG_AUDIO: {
329 int i;
330 for (i = 0; i < cpysize; i += 2)
331 swab16s((u16 *)(ptr + i));
332
333 tm6000_call_fillbuf(dev, TM6000_AUDIO, ptr, cpysize);
334 break;
335 }
336 case TM6000_URB_MSG_VBI:
337 /* Need some code to copy vbi buffer */
338 break;
339 case TM6000_URB_MSG_PTS: {
340 /* Need some code to copy pts */
341 u32 pts;
342 pts = *(u32 *)ptr;
343 dprintk(dev, V4L2_DEBUG_ISOC, "field %d, PTS %x",
344 field, pts);
345 break;
346 }
347 }
348 }
349 if (ptr + pktsize > endp) {
350 /*
351 * End of URB packet, but cmd processing is not
352 * complete. Preserve the state for a next packet
353 */
354 dev->isoc_ctl.pos = pos + cpysize;
355 dev->isoc_ctl.size = size - cpysize;
356 dev->isoc_ctl.cmd = cmd;
357 dev->isoc_ctl.field = field;
358 dev->isoc_ctl.pktsize = pktsize - (endp - ptr);
359 ptr += endp - ptr;
360 } else {
361 dev->isoc_ctl.cmd = 0;
362 ptr += pktsize;
363 }
364 }
365 return 0;
366 }
367
368 /*
369 * Identify the tm5600/6000 buffer header type and properly handles
370 */
371 static int copy_multiplexed(u8 *ptr, unsigned long len,
372 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 unsigned int pos = dev->isoc_ctl.pos, cpysize;
377 int rc = 1;
378 struct tm6000_buffer *buf;
379 char *outp = NULL;
380
381 get_next_buf(dma_q, &buf);
382 if (buf)
383 outp = videobuf_to_vmalloc(&buf->vb);
384
385 if (!outp)
386 return 0;
387
388 while (len > 0) {
389 cpysize = min(len, buf->vb.size-pos);
390 memcpy(&outp[pos], ptr, cpysize);
391 pos += cpysize;
392 ptr += cpysize;
393 len -= cpysize;
394 if (pos >= buf->vb.size) {
395 pos = 0;
396 /* Announces that a new buffer were filled */
397 buffer_filled(dev, dma_q, buf);
398 dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
399 get_next_buf(dma_q, &buf);
400 if (!buf)
401 break;
402 outp = videobuf_to_vmalloc(&(buf->vb));
403 if (!outp)
404 return rc;
405 pos = 0;
406 }
407 }
408
409 dev->isoc_ctl.pos = pos;
410 return rc;
411 }
412
413 static inline void print_err_status(struct tm6000_core *dev,
414 int packet, int status)
415 {
416 char *errmsg = "Unknown";
417
418 switch (status) {
419 case -ENOENT:
420 errmsg = "unlinked synchronuously";
421 break;
422 case -ECONNRESET:
423 errmsg = "unlinked asynchronuously";
424 break;
425 case -ENOSR:
426 errmsg = "Buffer error (overrun)";
427 break;
428 case -EPIPE:
429 errmsg = "Stalled (device not responding)";
430 break;
431 case -EOVERFLOW:
432 errmsg = "Babble (bad cable?)";
433 break;
434 case -EPROTO:
435 errmsg = "Bit-stuff error (bad cable?)";
436 break;
437 case -EILSEQ:
438 errmsg = "CRC/Timeout (could be anything)";
439 break;
440 case -ETIME:
441 errmsg = "Device does not respond";
442 break;
443 }
444 if (packet < 0) {
445 dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
446 status, errmsg);
447 } else {
448 dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n",
449 packet, status, errmsg);
450 }
451 }
452
453
454 /*
455 * Controls the isoc copy of each urb packet
456 */
457 static inline int tm6000_isoc_copy(struct urb *urb)
458 {
459 struct tm6000_dmaqueue *dma_q = urb->context;
460 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
461 int i, len = 0, rc = 1, status;
462 char *p;
463
464 if (urb->status < 0) {
465 print_err_status(dev, -1, urb->status);
466 return 0;
467 }
468
469 for (i = 0; i < urb->number_of_packets; i++) {
470 status = urb->iso_frame_desc[i].status;
471
472 if (status < 0) {
473 print_err_status(dev, i, status);
474 continue;
475 }
476
477 len = urb->iso_frame_desc[i].actual_length;
478
479 if (len > 0) {
480 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
481 if (!urb->iso_frame_desc[i].status) {
482 if ((dev->fourcc) == V4L2_PIX_FMT_TM6000) {
483 rc = copy_multiplexed(p, len, urb);
484 if (rc <= 0)
485 return rc;
486 } else {
487 copy_streams(p, len, urb);
488 }
489 }
490 }
491 }
492 return rc;
493 }
494
495 /* ------------------------------------------------------------------
496 * URB control
497 * ------------------------------------------------------------------
498 */
499
500 /*
501 * IRQ callback, called by URB callback
502 */
503 static void tm6000_irq_callback(struct urb *urb)
504 {
505 struct tm6000_dmaqueue *dma_q = urb->context;
506 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
507 int i;
508
509 switch (urb->status) {
510 case 0:
511 case -ETIMEDOUT:
512 break;
513
514 case -ECONNRESET:
515 case -ENOENT:
516 case -ESHUTDOWN:
517 return;
518
519 default:
520 tm6000_err("urb completion error %d.\n", urb->status);
521 break;
522 }
523
524 spin_lock(&dev->slock);
525 tm6000_isoc_copy(urb);
526 spin_unlock(&dev->slock);
527
528 /* Reset urb buffers */
529 for (i = 0; i < urb->number_of_packets; i++) {
530 urb->iso_frame_desc[i].status = 0;
531 urb->iso_frame_desc[i].actual_length = 0;
532 }
533
534 urb->status = usb_submit_urb(urb, GFP_ATOMIC);
535 if (urb->status)
536 tm6000_err("urb resubmit failed (error=%i)\n",
537 urb->status);
538 }
539
540 /*
541 * Stop and Deallocate URBs
542 */
543 static void tm6000_uninit_isoc(struct tm6000_core *dev)
544 {
545 struct urb *urb;
546 int i;
547
548 dev->isoc_ctl.buf = NULL;
549 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
550 urb = dev->isoc_ctl.urb[i];
551 if (urb) {
552 usb_kill_urb(urb);
553 usb_unlink_urb(urb);
554 if (dev->isoc_ctl.transfer_buffer[i]) {
555 usb_free_coherent(dev->udev,
556 urb->transfer_buffer_length,
557 dev->isoc_ctl.transfer_buffer[i],
558 urb->transfer_dma);
559 }
560 usb_free_urb(urb);
561 dev->isoc_ctl.urb[i] = NULL;
562 }
563 dev->isoc_ctl.transfer_buffer[i] = NULL;
564 }
565
566 kfree(dev->isoc_ctl.urb);
567 kfree(dev->isoc_ctl.transfer_buffer);
568
569 dev->isoc_ctl.urb = NULL;
570 dev->isoc_ctl.transfer_buffer = NULL;
571 dev->isoc_ctl.num_bufs = 0;
572 }
573
574 /*
575 * Allocate URBs and start IRQ
576 */
577 static int tm6000_prepare_isoc(struct tm6000_core *dev)
578 {
579 struct tm6000_dmaqueue *dma_q = &dev->vidq;
580 int i, j, sb_size, pipe, size, max_packets, num_bufs = 8;
581 struct urb *urb;
582
583 /* De-allocates all pending stuff */
584 tm6000_uninit_isoc(dev);
585 /* Stop interrupt USB pipe */
586 tm6000_ir_int_stop(dev);
587
588 usb_set_interface(dev->udev,
589 dev->isoc_in.bInterfaceNumber,
590 dev->isoc_in.bAlternateSetting);
591
592 /* Start interrupt USB pipe */
593 tm6000_ir_int_start(dev);
594
595 pipe = usb_rcvisocpipe(dev->udev,
596 dev->isoc_in.endp->desc.bEndpointAddress &
597 USB_ENDPOINT_NUMBER_MASK);
598
599 size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
600
601 if (size > dev->isoc_in.maxsize)
602 size = dev->isoc_in.maxsize;
603
604 dev->isoc_ctl.max_pkt_size = size;
605
606 max_packets = TM6000_MAX_ISO_PACKETS;
607 sb_size = max_packets * size;
608
609 dev->isoc_ctl.num_bufs = num_bufs;
610
611 dev->isoc_ctl.urb = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
612 if (!dev->isoc_ctl.urb) {
613 tm6000_err("cannot alloc memory for usb buffers\n");
614 return -ENOMEM;
615 }
616
617 dev->isoc_ctl.transfer_buffer = kmalloc(sizeof(void *)*num_bufs,
618 GFP_KERNEL);
619 if (!dev->isoc_ctl.transfer_buffer) {
620 tm6000_err("cannot allocate memory for usbtransfer\n");
621 kfree(dev->isoc_ctl.urb);
622 return -ENOMEM;
623 }
624
625 dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets"
626 " (%d bytes) of %d bytes each to handle %u size\n",
627 max_packets, num_bufs, sb_size,
628 dev->isoc_in.maxsize, size);
629
630 /* allocate urbs and transfer buffers */
631 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
632 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
633 if (!urb) {
634 tm6000_err("cannot alloc isoc_ctl.urb %i\n", i);
635 tm6000_uninit_isoc(dev);
636 usb_free_urb(urb);
637 return -ENOMEM;
638 }
639 dev->isoc_ctl.urb[i] = urb;
640
641 dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->udev,
642 sb_size, GFP_KERNEL, &urb->transfer_dma);
643 if (!dev->isoc_ctl.transfer_buffer[i]) {
644 tm6000_err("unable to allocate %i bytes for transfer"
645 " buffer %i%s\n",
646 sb_size, i,
647 in_interrupt() ? " while in int" : "");
648 tm6000_uninit_isoc(dev);
649 return -ENOMEM;
650 }
651 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
652
653 usb_fill_bulk_urb(urb, dev->udev, pipe,
654 dev->isoc_ctl.transfer_buffer[i], sb_size,
655 tm6000_irq_callback, dma_q);
656 urb->interval = dev->isoc_in.endp->desc.bInterval;
657 urb->number_of_packets = max_packets;
658 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
659
660 for (j = 0; j < max_packets; j++) {
661 urb->iso_frame_desc[j].offset = size * j;
662 urb->iso_frame_desc[j].length = size;
663 }
664 }
665
666 return 0;
667 }
668
669 static int tm6000_start_thread(struct tm6000_core *dev)
670 {
671 struct tm6000_dmaqueue *dma_q = &dev->vidq;
672 int i;
673
674 dma_q->frame = 0;
675 dma_q->ini_jiffies = jiffies;
676
677 init_waitqueue_head(&dma_q->wq);
678
679 /* submit urbs and enables IRQ */
680 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
681 int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
682 if (rc) {
683 tm6000_err("submit of urb %i failed (error=%i)\n", i,
684 rc);
685 tm6000_uninit_isoc(dev);
686 return rc;
687 }
688 }
689
690 return 0;
691 }
692
693 /* ------------------------------------------------------------------
694 * Videobuf operations
695 * ------------------------------------------------------------------
696 */
697
698 static int
699 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
700 {
701 struct tm6000_fh *fh = vq->priv_data;
702
703 *size = fh->fmt->depth * fh->width * fh->height >> 3;
704 if (0 == *count)
705 *count = TM6000_DEF_BUF;
706
707 if (*count < TM6000_MIN_BUF)
708 *count = TM6000_MIN_BUF;
709
710 while (*size * *count > vid_limit * 1024 * 1024)
711 (*count)--;
712
713 return 0;
714 }
715
716 static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf)
717 {
718 struct tm6000_fh *fh = vq->priv_data;
719 struct tm6000_core *dev = fh->dev;
720 unsigned long flags;
721
722 if (in_interrupt())
723 BUG();
724
725 /* We used to wait for the buffer to finish here, but this didn't work
726 because, as we were keeping the state as VIDEOBUF_QUEUED,
727 videobuf_queue_cancel marked it as finished for us.
728 (Also, it could wedge forever if the hardware was misconfigured.)
729
730 This should be safe; by the time we get here, the buffer isn't
731 queued anymore. If we ever start marking the buffers as
732 VIDEOBUF_ACTIVE, it won't be, though.
733 */
734 spin_lock_irqsave(&dev->slock, flags);
735 if (dev->isoc_ctl.buf == buf)
736 dev->isoc_ctl.buf = NULL;
737 spin_unlock_irqrestore(&dev->slock, flags);
738
739 videobuf_vmalloc_free(&buf->vb);
740 buf->vb.state = VIDEOBUF_NEEDS_INIT;
741 }
742
743 static int
744 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
745 enum v4l2_field field)
746 {
747 struct tm6000_fh *fh = vq->priv_data;
748 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
749 struct tm6000_core *dev = fh->dev;
750 int rc = 0;
751
752 BUG_ON(NULL == fh->fmt);
753
754
755 /* FIXME: It assumes depth=2 */
756 /* The only currently supported format is 16 bits/pixel */
757 buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
758 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
759 return -EINVAL;
760
761 if (buf->fmt != fh->fmt ||
762 buf->vb.width != fh->width ||
763 buf->vb.height != fh->height ||
764 buf->vb.field != field) {
765 buf->fmt = fh->fmt;
766 buf->vb.width = fh->width;
767 buf->vb.height = fh->height;
768 buf->vb.field = field;
769 buf->vb.state = VIDEOBUF_NEEDS_INIT;
770 }
771
772 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
773 rc = videobuf_iolock(vq, &buf->vb, NULL);
774 if (rc != 0)
775 goto fail;
776 }
777
778 if (!dev->isoc_ctl.num_bufs) {
779 rc = tm6000_prepare_isoc(dev);
780 if (rc < 0)
781 goto fail;
782
783 rc = tm6000_start_thread(dev);
784 if (rc < 0)
785 goto fail;
786
787 }
788
789 buf->vb.state = VIDEOBUF_PREPARED;
790 return 0;
791
792 fail:
793 free_buffer(vq, buf);
794 return rc;
795 }
796
797 static void
798 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
799 {
800 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
801 struct tm6000_fh *fh = vq->priv_data;
802 struct tm6000_core *dev = fh->dev;
803 struct tm6000_dmaqueue *vidq = &dev->vidq;
804
805 buf->vb.state = VIDEOBUF_QUEUED;
806 list_add_tail(&buf->vb.queue, &vidq->active);
807 }
808
809 static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
810 {
811 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
812
813 free_buffer(vq, buf);
814 }
815
816 static struct videobuf_queue_ops tm6000_video_qops = {
817 .buf_setup = buffer_setup,
818 .buf_prepare = buffer_prepare,
819 .buf_queue = buffer_queue,
820 .buf_release = buffer_release,
821 };
822
823 /* ------------------------------------------------------------------
824 * IOCTL handling
825 * ------------------------------------------------------------------
826 */
827
828 static bool is_res_read(struct tm6000_core *dev, struct tm6000_fh *fh)
829 {
830 /* Is the current fh handling it? if so, that's OK */
831 if (dev->resources == fh && dev->is_res_read)
832 return true;
833
834 return false;
835 }
836
837 static bool is_res_streaming(struct tm6000_core *dev, struct tm6000_fh *fh)
838 {
839 /* Is the current fh handling it? if so, that's OK */
840 if (dev->resources == fh)
841 return true;
842
843 return false;
844 }
845
846 static bool res_get(struct tm6000_core *dev, struct tm6000_fh *fh,
847 bool is_res_read)
848 {
849 /* Is the current fh handling it? if so, that's OK */
850 if (dev->resources == fh && dev->is_res_read == is_res_read)
851 return true;
852
853 /* is it free? */
854 if (dev->resources)
855 return false;
856
857 /* grab it */
858 dev->resources = fh;
859 dev->is_res_read = is_res_read;
860 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
861 return true;
862 }
863
864 static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
865 {
866 /* Is the current fh handling it? if so, that's OK */
867 if (dev->resources != fh)
868 return;
869
870 dev->resources = NULL;
871 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
872 }
873
874 /* ------------------------------------------------------------------
875 * IOCTL vidioc handling
876 * ------------------------------------------------------------------
877 */
878 static int vidioc_querycap(struct file *file, void *priv,
879 struct v4l2_capability *cap)
880 {
881 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
882
883 strlcpy(cap->driver, "tm6000", sizeof(cap->driver));
884 strlcpy(cap->card, "Trident TVMaster TM5600/6000/6010", sizeof(cap->card));
885 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
886 V4L2_CAP_STREAMING |
887 V4L2_CAP_AUDIO |
888 V4L2_CAP_READWRITE;
889
890 if (dev->tuner_type != TUNER_ABSENT)
891 cap->capabilities |= V4L2_CAP_TUNER;
892
893 return 0;
894 }
895
896 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
897 struct v4l2_fmtdesc *f)
898 {
899 if (unlikely(f->index >= ARRAY_SIZE(format)))
900 return -EINVAL;
901
902 strlcpy(f->description, format[f->index].name, sizeof(f->description));
903 f->pixelformat = format[f->index].fourcc;
904 return 0;
905 }
906
907 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
908 struct v4l2_format *f)
909 {
910 struct tm6000_fh *fh = priv;
911
912 f->fmt.pix.width = fh->width;
913 f->fmt.pix.height = fh->height;
914 f->fmt.pix.field = fh->vb_vidq.field;
915 f->fmt.pix.pixelformat = fh->fmt->fourcc;
916 f->fmt.pix.bytesperline =
917 (f->fmt.pix.width * fh->fmt->depth) >> 3;
918 f->fmt.pix.sizeimage =
919 f->fmt.pix.height * f->fmt.pix.bytesperline;
920
921 return 0;
922 }
923
924 static struct tm6000_fmt *format_by_fourcc(unsigned int fourcc)
925 {
926 unsigned int i;
927
928 for (i = 0; i < ARRAY_SIZE(format); i++)
929 if (format[i].fourcc == fourcc)
930 return format+i;
931 return NULL;
932 }
933
934 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
935 struct v4l2_format *f)
936 {
937 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
938 struct tm6000_fmt *fmt;
939 enum v4l2_field field;
940
941 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
942 if (NULL == fmt) {
943 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Fourcc format (0x%08x)"
944 " invalid.\n", f->fmt.pix.pixelformat);
945 return -EINVAL;
946 }
947
948 field = f->fmt.pix.field;
949
950 if (field == V4L2_FIELD_ANY)
951 field = V4L2_FIELD_SEQ_TB;
952 else if (V4L2_FIELD_INTERLACED != field) {
953 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Field type invalid.\n");
954 return -EINVAL;
955 }
956
957 tm6000_get_std_res(dev);
958
959 f->fmt.pix.width = dev->width;
960 f->fmt.pix.height = dev->height;
961
962 f->fmt.pix.width &= ~0x01;
963
964 f->fmt.pix.field = field;
965
966 f->fmt.pix.bytesperline =
967 (f->fmt.pix.width * fmt->depth) >> 3;
968 f->fmt.pix.sizeimage =
969 f->fmt.pix.height * f->fmt.pix.bytesperline;
970
971 return 0;
972 }
973
974 /*FIXME: This seems to be generic enough to be at videodev2 */
975 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
976 struct v4l2_format *f)
977 {
978 struct tm6000_fh *fh = priv;
979 struct tm6000_core *dev = fh->dev;
980 int ret = vidioc_try_fmt_vid_cap(file, fh, f);
981 if (ret < 0)
982 return ret;
983
984 fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
985 fh->width = f->fmt.pix.width;
986 fh->height = f->fmt.pix.height;
987 fh->vb_vidq.field = f->fmt.pix.field;
988 fh->type = f->type;
989
990 dev->fourcc = f->fmt.pix.pixelformat;
991
992 tm6000_set_fourcc_format(dev);
993
994 return 0;
995 }
996
997 static int vidioc_reqbufs(struct file *file, void *priv,
998 struct v4l2_requestbuffers *p)
999 {
1000 struct tm6000_fh *fh = priv;
1001
1002 return videobuf_reqbufs(&fh->vb_vidq, p);
1003 }
1004
1005 static int vidioc_querybuf(struct file *file, void *priv,
1006 struct v4l2_buffer *p)
1007 {
1008 struct tm6000_fh *fh = priv;
1009
1010 return videobuf_querybuf(&fh->vb_vidq, p);
1011 }
1012
1013 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1014 {
1015 struct tm6000_fh *fh = priv;
1016
1017 return videobuf_qbuf(&fh->vb_vidq, p);
1018 }
1019
1020 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1021 {
1022 struct tm6000_fh *fh = priv;
1023
1024 return videobuf_dqbuf(&fh->vb_vidq, p,
1025 file->f_flags & O_NONBLOCK);
1026 }
1027
1028 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
1029 {
1030 struct tm6000_fh *fh = priv;
1031 struct tm6000_core *dev = fh->dev;
1032
1033 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1034 return -EINVAL;
1035 if (i != fh->type)
1036 return -EINVAL;
1037
1038 if (!res_get(dev, fh, false))
1039 return -EBUSY;
1040 return videobuf_streamon(&fh->vb_vidq);
1041 }
1042
1043 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
1044 {
1045 struct tm6000_fh *fh = priv;
1046 struct tm6000_core *dev = fh->dev;
1047
1048 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1049 return -EINVAL;
1050
1051 if (i != fh->type)
1052 return -EINVAL;
1053
1054 videobuf_streamoff(&fh->vb_vidq);
1055 res_free(dev, fh);
1056
1057 return 0;
1058 }
1059
1060 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1061 {
1062 int rc = 0;
1063 struct tm6000_fh *fh = priv;
1064 struct tm6000_core *dev = fh->dev;
1065
1066 dev->norm = *norm;
1067 rc = tm6000_init_analog_mode(dev);
1068
1069 fh->width = dev->width;
1070 fh->height = dev->height;
1071
1072 if (rc < 0)
1073 return rc;
1074
1075 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1076
1077 return 0;
1078 }
1079
1080 static const char *iname[] = {
1081 [TM6000_INPUT_TV] = "Television",
1082 [TM6000_INPUT_COMPOSITE1] = "Composite 1",
1083 [TM6000_INPUT_COMPOSITE2] = "Composite 2",
1084 [TM6000_INPUT_SVIDEO] = "S-Video",
1085 };
1086
1087 static int vidioc_enum_input(struct file *file, void *priv,
1088 struct v4l2_input *i)
1089 {
1090 struct tm6000_fh *fh = priv;
1091 struct tm6000_core *dev = fh->dev;
1092 unsigned int n;
1093
1094 n = i->index;
1095 if (n >= 3)
1096 return -EINVAL;
1097
1098 if (!dev->vinput[n].type)
1099 return -EINVAL;
1100
1101 i->index = n;
1102
1103 if (dev->vinput[n].type == TM6000_INPUT_TV)
1104 i->type = V4L2_INPUT_TYPE_TUNER;
1105 else
1106 i->type = V4L2_INPUT_TYPE_CAMERA;
1107
1108 strcpy(i->name, iname[dev->vinput[n].type]);
1109
1110 i->std = TM6000_STD;
1111
1112 return 0;
1113 }
1114
1115 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1116 {
1117 struct tm6000_fh *fh = priv;
1118 struct tm6000_core *dev = fh->dev;
1119
1120 *i = dev->input;
1121
1122 return 0;
1123 }
1124
1125 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1126 {
1127 struct tm6000_fh *fh = priv;
1128 struct tm6000_core *dev = fh->dev;
1129 int rc = 0;
1130
1131 if (i >= 3)
1132 return -EINVAL;
1133 if (!dev->vinput[i].type)
1134 return -EINVAL;
1135
1136 dev->input = i;
1137
1138 rc = vidioc_s_std(file, priv, &dev->vfd->current_norm);
1139
1140 return rc;
1141 }
1142
1143 /* --- controls ---------------------------------------------- */
1144 static int vidioc_queryctrl(struct file *file, void *priv,
1145 struct v4l2_queryctrl *qc)
1146 {
1147 int i;
1148
1149 for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
1150 if (qc->id && qc->id == tm6000_qctrl[i].id) {
1151 memcpy(qc, &(tm6000_qctrl[i]),
1152 sizeof(*qc));
1153 return 0;
1154 }
1155
1156 return -EINVAL;
1157 }
1158
1159 static int vidioc_g_ctrl(struct file *file, void *priv,
1160 struct v4l2_control *ctrl)
1161 {
1162 struct tm6000_fh *fh = priv;
1163 struct tm6000_core *dev = fh->dev;
1164 int val;
1165
1166 /* FIXME: Probably, those won't work! Maybe we need shadow regs */
1167 switch (ctrl->id) {
1168 case V4L2_CID_CONTRAST:
1169 val = tm6000_get_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, 0);
1170 break;
1171 case V4L2_CID_BRIGHTNESS:
1172 val = tm6000_get_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, 0);
1173 return 0;
1174 case V4L2_CID_SATURATION:
1175 val = tm6000_get_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, 0);
1176 return 0;
1177 case V4L2_CID_HUE:
1178 val = tm6000_get_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, 0);
1179 return 0;
1180 case V4L2_CID_AUDIO_MUTE:
1181 val = dev->ctl_mute;
1182 return 0;
1183 case V4L2_CID_AUDIO_VOLUME:
1184 val = dev->ctl_volume;
1185 return 0;
1186 default:
1187 return -EINVAL;
1188 }
1189
1190 if (val < 0)
1191 return val;
1192
1193 ctrl->value = val;
1194
1195 return 0;
1196 }
1197 static int vidioc_s_ctrl(struct file *file, void *priv,
1198 struct v4l2_control *ctrl)
1199 {
1200 struct tm6000_fh *fh = priv;
1201 struct tm6000_core *dev = fh->dev;
1202 u8 val = ctrl->value;
1203
1204 switch (ctrl->id) {
1205 case V4L2_CID_CONTRAST:
1206 tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val);
1207 return 0;
1208 case V4L2_CID_BRIGHTNESS:
1209 tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val);
1210 return 0;
1211 case V4L2_CID_SATURATION:
1212 tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val);
1213 return 0;
1214 case V4L2_CID_HUE:
1215 tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val);
1216 return 0;
1217 case V4L2_CID_AUDIO_MUTE:
1218 dev->ctl_mute = val;
1219 tm6000_tvaudio_set_mute(dev, val);
1220 return 0;
1221 case V4L2_CID_AUDIO_VOLUME:
1222 dev->ctl_volume = val;
1223 tm6000_set_volume(dev, val);
1224 return 0;
1225 }
1226 return -EINVAL;
1227 }
1228
1229 static int vidioc_g_tuner(struct file *file, void *priv,
1230 struct v4l2_tuner *t)
1231 {
1232 struct tm6000_fh *fh = priv;
1233 struct tm6000_core *dev = fh->dev;
1234
1235 if (unlikely(UNSET == dev->tuner_type))
1236 return -EINVAL;
1237 if (0 != t->index)
1238 return -EINVAL;
1239
1240 strcpy(t->name, "Television");
1241 t->type = V4L2_TUNER_ANALOG_TV;
1242 t->capability = V4L2_TUNER_CAP_NORM;
1243 t->rangehigh = 0xffffffffUL;
1244 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1245
1246 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1247
1248 t->audmode = dev->amode;
1249
1250 return 0;
1251 }
1252
1253 static int vidioc_s_tuner(struct file *file, void *priv,
1254 struct v4l2_tuner *t)
1255 {
1256 struct tm6000_fh *fh = priv;
1257 struct tm6000_core *dev = fh->dev;
1258
1259 if (UNSET == dev->tuner_type)
1260 return -EINVAL;
1261 if (0 != t->index)
1262 return -EINVAL;
1263
1264 dev->amode = t->audmode;
1265 dprintk(dev, 3, "audio mode: %x\n", t->audmode);
1266
1267 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1268
1269 return 0;
1270 }
1271
1272 static int vidioc_g_frequency(struct file *file, void *priv,
1273 struct v4l2_frequency *f)
1274 {
1275 struct tm6000_fh *fh = priv;
1276 struct tm6000_core *dev = fh->dev;
1277
1278 if (unlikely(UNSET == dev->tuner_type))
1279 return -EINVAL;
1280
1281 f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1282 f->frequency = dev->freq;
1283
1284 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
1285
1286 return 0;
1287 }
1288
1289 static int vidioc_s_frequency(struct file *file, void *priv,
1290 struct v4l2_frequency *f)
1291 {
1292 struct tm6000_fh *fh = priv;
1293 struct tm6000_core *dev = fh->dev;
1294
1295 if (unlikely(UNSET == dev->tuner_type))
1296 return -EINVAL;
1297 if (unlikely(f->tuner != 0))
1298 return -EINVAL;
1299 if (0 == fh->radio && V4L2_TUNER_ANALOG_TV != f->type)
1300 return -EINVAL;
1301 if (1 == fh->radio && V4L2_TUNER_RADIO != f->type)
1302 return -EINVAL;
1303
1304 dev->freq = f->frequency;
1305 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1306
1307 return 0;
1308 }
1309
1310 static int radio_querycap(struct file *file, void *priv,
1311 struct v4l2_capability *cap)
1312 {
1313 struct tm6000_fh *fh = file->private_data;
1314 struct tm6000_core *dev = fh->dev;
1315
1316 strcpy(cap->driver, "tm6000");
1317 strlcpy(cap->card, dev->name, sizeof(dev->name));
1318 sprintf(cap->bus_info, "USB%04x:%04x",
1319 le16_to_cpu(dev->udev->descriptor.idVendor),
1320 le16_to_cpu(dev->udev->descriptor.idProduct));
1321 cap->version = dev->dev_type;
1322 cap->capabilities = V4L2_CAP_TUNER |
1323 V4L2_CAP_AUDIO |
1324 V4L2_CAP_RADIO |
1325 V4L2_CAP_READWRITE |
1326 V4L2_CAP_STREAMING;
1327
1328 return 0;
1329 }
1330
1331 static int radio_g_tuner(struct file *file, void *priv,
1332 struct v4l2_tuner *t)
1333 {
1334 struct tm6000_fh *fh = file->private_data;
1335 struct tm6000_core *dev = fh->dev;
1336
1337 if (0 != t->index)
1338 return -EINVAL;
1339
1340 memset(t, 0, sizeof(*t));
1341 strcpy(t->name, "Radio");
1342 t->type = V4L2_TUNER_RADIO;
1343 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1344
1345 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1346
1347 return 0;
1348 }
1349
1350 static int radio_s_tuner(struct file *file, void *priv,
1351 struct v4l2_tuner *t)
1352 {
1353 struct tm6000_fh *fh = file->private_data;
1354 struct tm6000_core *dev = fh->dev;
1355
1356 if (0 != t->index)
1357 return -EINVAL;
1358
1359 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1360
1361 return 0;
1362 }
1363
1364 static int radio_enum_input(struct file *file, void *priv,
1365 struct v4l2_input *i)
1366 {
1367 struct tm6000_fh *fh = priv;
1368 struct tm6000_core *dev = fh->dev;
1369
1370 if (i->index != 0)
1371 return -EINVAL;
1372
1373 if (!dev->rinput.type)
1374 return -EINVAL;
1375
1376 strcpy(i->name, "Radio");
1377 i->type = V4L2_INPUT_TYPE_TUNER;
1378
1379 return 0;
1380 }
1381
1382 static int radio_g_input(struct file *filp, void *priv, unsigned int *i)
1383 {
1384 struct tm6000_fh *fh = priv;
1385 struct tm6000_core *dev = fh->dev;
1386
1387 if (dev->input != 5)
1388 return -EINVAL;
1389
1390 *i = dev->input - 5;
1391
1392 return 0;
1393 }
1394
1395 static int radio_g_audio(struct file *file, void *priv,
1396 struct v4l2_audio *a)
1397 {
1398 memset(a, 0, sizeof(*a));
1399 strcpy(a->name, "Radio");
1400 return 0;
1401 }
1402
1403 static int radio_s_audio(struct file *file, void *priv,
1404 const struct v4l2_audio *a)
1405 {
1406 return 0;
1407 }
1408
1409 static int radio_s_input(struct file *filp, void *priv, unsigned int i)
1410 {
1411 struct tm6000_fh *fh = priv;
1412 struct tm6000_core *dev = fh->dev;
1413
1414 if (i)
1415 return -EINVAL;
1416
1417 if (!dev->rinput.type)
1418 return -EINVAL;
1419
1420 dev->input = i + 5;
1421
1422 return 0;
1423 }
1424
1425 static int radio_s_std(struct file *file, void *fh, v4l2_std_id *norm)
1426 {
1427 return 0;
1428 }
1429
1430 static int radio_queryctrl(struct file *file, void *priv,
1431 struct v4l2_queryctrl *c)
1432 {
1433 const struct v4l2_queryctrl *ctrl;
1434
1435 if (c->id < V4L2_CID_BASE ||
1436 c->id >= V4L2_CID_LASTP1)
1437 return -EINVAL;
1438 if (c->id == V4L2_CID_AUDIO_MUTE) {
1439 ctrl = ctrl_by_id(c->id);
1440 *c = *ctrl;
1441 } else
1442 *c = no_ctrl;
1443
1444 return 0;
1445 }
1446
1447 /* ------------------------------------------------------------------
1448 File operations for the device
1449 ------------------------------------------------------------------*/
1450
1451 static int __tm6000_open(struct file *file)
1452 {
1453 struct video_device *vdev = video_devdata(file);
1454 struct tm6000_core *dev = video_drvdata(file);
1455 struct tm6000_fh *fh;
1456 enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1457 int i, rc;
1458 int radio = 0;
1459
1460 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
1461 video_device_node_name(vdev));
1462
1463 switch (vdev->vfl_type) {
1464 case VFL_TYPE_GRABBER:
1465 type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1466 break;
1467 case VFL_TYPE_VBI:
1468 type = V4L2_BUF_TYPE_VBI_CAPTURE;
1469 break;
1470 case VFL_TYPE_RADIO:
1471 radio = 1;
1472 break;
1473 }
1474
1475 /* If more than one user, mutex should be added */
1476 dev->users++;
1477
1478 dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
1479 video_device_node_name(vdev), v4l2_type_names[type],
1480 dev->users);
1481
1482 /* allocate + initialize per filehandle data */
1483 fh = kzalloc(sizeof(*fh), GFP_KERNEL);
1484 if (NULL == fh) {
1485 dev->users--;
1486 return -ENOMEM;
1487 }
1488
1489 file->private_data = fh;
1490 fh->dev = dev;
1491 fh->radio = radio;
1492 dev->radio = radio;
1493 fh->type = type;
1494 dev->fourcc = format[0].fourcc;
1495
1496 fh->fmt = format_by_fourcc(dev->fourcc);
1497
1498 tm6000_get_std_res(dev);
1499
1500 fh->width = dev->width;
1501 fh->height = dev->height;
1502
1503 dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=0x%08lx, dev=0x%08lx, "
1504 "dev->vidq=0x%08lx\n",
1505 (unsigned long)fh, (unsigned long)dev,
1506 (unsigned long)&dev->vidq);
1507 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1508 "queued=%d\n", list_empty(&dev->vidq.queued));
1509 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1510 "active=%d\n", list_empty(&dev->vidq.active));
1511
1512 /* initialize hardware on analog mode */
1513 rc = tm6000_init_analog_mode(dev);
1514 if (rc < 0)
1515 return rc;
1516
1517 if (dev->mode != TM6000_MODE_ANALOG) {
1518 /* Put all controls at a sane state */
1519 for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
1520 qctl_regs[i] = tm6000_qctrl[i].default_value;
1521
1522 dev->mode = TM6000_MODE_ANALOG;
1523 }
1524
1525 if (!fh->radio) {
1526 videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
1527 NULL, &dev->slock,
1528 fh->type,
1529 V4L2_FIELD_INTERLACED,
1530 sizeof(struct tm6000_buffer), fh, &dev->lock);
1531 } else {
1532 dprintk(dev, V4L2_DEBUG_OPEN, "video_open: setting radio device\n");
1533 dev->input = 5;
1534 tm6000_set_audio_rinput(dev);
1535 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1536 tm6000_prepare_isoc(dev);
1537 tm6000_start_thread(dev);
1538 }
1539
1540 return 0;
1541 }
1542
1543 static int tm6000_open(struct file *file)
1544 {
1545 struct video_device *vdev = video_devdata(file);
1546 int res;
1547
1548 mutex_lock(vdev->lock);
1549 res = __tm6000_open(file);
1550 mutex_unlock(vdev->lock);
1551 return res;
1552 }
1553
1554 static ssize_t
1555 tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
1556 {
1557 struct tm6000_fh *fh = file->private_data;
1558 struct tm6000_core *dev = fh->dev;
1559
1560 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1561 int res;
1562
1563 if (!res_get(fh->dev, fh, true))
1564 return -EBUSY;
1565
1566 if (mutex_lock_interruptible(&dev->lock))
1567 return -ERESTARTSYS;
1568 res = videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
1569 file->f_flags & O_NONBLOCK);
1570 mutex_unlock(&dev->lock);
1571 return res;
1572 }
1573 return 0;
1574 }
1575
1576 static unsigned int
1577 __tm6000_poll(struct file *file, struct poll_table_struct *wait)
1578 {
1579 struct tm6000_fh *fh = file->private_data;
1580 struct tm6000_buffer *buf;
1581
1582 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1583 return POLLERR;
1584
1585 if (!!is_res_streaming(fh->dev, fh))
1586 return POLLERR;
1587
1588 if (!is_res_read(fh->dev, fh)) {
1589 /* streaming capture */
1590 if (list_empty(&fh->vb_vidq.stream))
1591 return POLLERR;
1592 buf = list_entry(fh->vb_vidq.stream.next, struct tm6000_buffer, vb.stream);
1593 } else {
1594 /* read() capture */
1595 return videobuf_poll_stream(file, &fh->vb_vidq, wait);
1596 }
1597 poll_wait(file, &buf->vb.done, wait);
1598 if (buf->vb.state == VIDEOBUF_DONE ||
1599 buf->vb.state == VIDEOBUF_ERROR)
1600 return POLLIN | POLLRDNORM;
1601 return 0;
1602 }
1603
1604 static unsigned int tm6000_poll(struct file *file, struct poll_table_struct *wait)
1605 {
1606 struct tm6000_fh *fh = file->private_data;
1607 struct tm6000_core *dev = fh->dev;
1608 unsigned int res;
1609
1610 mutex_lock(&dev->lock);
1611 res = __tm6000_poll(file, wait);
1612 mutex_unlock(&dev->lock);
1613 return res;
1614 }
1615
1616 static int tm6000_release(struct file *file)
1617 {
1618 struct tm6000_fh *fh = file->private_data;
1619 struct tm6000_core *dev = fh->dev;
1620 struct video_device *vdev = video_devdata(file);
1621
1622 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
1623 video_device_node_name(vdev), dev->users);
1624
1625 mutex_lock(&dev->lock);
1626 dev->users--;
1627
1628 res_free(dev, fh);
1629
1630 if (!dev->users) {
1631 tm6000_uninit_isoc(dev);
1632
1633 /* Stop interrupt USB pipe */
1634 tm6000_ir_int_stop(dev);
1635
1636 usb_reset_configuration(dev->udev);
1637
1638 if (dev->int_in.endp)
1639 usb_set_interface(dev->udev,
1640 dev->isoc_in.bInterfaceNumber, 2);
1641 else
1642 usb_set_interface(dev->udev,
1643 dev->isoc_in.bInterfaceNumber, 0);
1644
1645 /* Start interrupt USB pipe */
1646 tm6000_ir_int_start(dev);
1647
1648 if (!fh->radio)
1649 videobuf_mmap_free(&fh->vb_vidq);
1650 }
1651
1652 kfree(fh);
1653 mutex_unlock(&dev->lock);
1654
1655 return 0;
1656 }
1657
1658 static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
1659 {
1660 struct tm6000_fh *fh = file->private_data;
1661 struct tm6000_core *dev = fh->dev;
1662 int res;
1663
1664 if (mutex_lock_interruptible(&dev->lock))
1665 return -ERESTARTSYS;
1666 res = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1667 mutex_unlock(&dev->lock);
1668 return res;
1669 }
1670
1671 static struct v4l2_file_operations tm6000_fops = {
1672 .owner = THIS_MODULE,
1673 .open = tm6000_open,
1674 .release = tm6000_release,
1675 .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
1676 .read = tm6000_read,
1677 .poll = tm6000_poll,
1678 .mmap = tm6000_mmap,
1679 };
1680
1681 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1682 .vidioc_querycap = vidioc_querycap,
1683 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1684 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1685 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1686 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1687 .vidioc_s_std = vidioc_s_std,
1688 .vidioc_enum_input = vidioc_enum_input,
1689 .vidioc_g_input = vidioc_g_input,
1690 .vidioc_s_input = vidioc_s_input,
1691 .vidioc_queryctrl = vidioc_queryctrl,
1692 .vidioc_g_ctrl = vidioc_g_ctrl,
1693 .vidioc_s_ctrl = vidioc_s_ctrl,
1694 .vidioc_g_tuner = vidioc_g_tuner,
1695 .vidioc_s_tuner = vidioc_s_tuner,
1696 .vidioc_g_frequency = vidioc_g_frequency,
1697 .vidioc_s_frequency = vidioc_s_frequency,
1698 .vidioc_streamon = vidioc_streamon,
1699 .vidioc_streamoff = vidioc_streamoff,
1700 .vidioc_reqbufs = vidioc_reqbufs,
1701 .vidioc_querybuf = vidioc_querybuf,
1702 .vidioc_qbuf = vidioc_qbuf,
1703 .vidioc_dqbuf = vidioc_dqbuf,
1704 };
1705
1706 static struct video_device tm6000_template = {
1707 .name = "tm6000",
1708 .fops = &tm6000_fops,
1709 .ioctl_ops = &video_ioctl_ops,
1710 .release = video_device_release,
1711 .tvnorms = TM6000_STD,
1712 .current_norm = V4L2_STD_NTSC_M,
1713 };
1714
1715 static const struct v4l2_file_operations radio_fops = {
1716 .owner = THIS_MODULE,
1717 .open = tm6000_open,
1718 .release = tm6000_release,
1719 .unlocked_ioctl = video_ioctl2,
1720 };
1721
1722 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1723 .vidioc_querycap = radio_querycap,
1724 .vidioc_g_tuner = radio_g_tuner,
1725 .vidioc_enum_input = radio_enum_input,
1726 .vidioc_g_audio = radio_g_audio,
1727 .vidioc_s_tuner = radio_s_tuner,
1728 .vidioc_s_audio = radio_s_audio,
1729 .vidioc_s_input = radio_s_input,
1730 .vidioc_s_std = radio_s_std,
1731 .vidioc_queryctrl = radio_queryctrl,
1732 .vidioc_g_input = radio_g_input,
1733 .vidioc_g_ctrl = vidioc_g_ctrl,
1734 .vidioc_s_ctrl = vidioc_s_ctrl,
1735 .vidioc_g_frequency = vidioc_g_frequency,
1736 .vidioc_s_frequency = vidioc_s_frequency,
1737 };
1738
1739 static struct video_device tm6000_radio_template = {
1740 .name = "tm6000",
1741 .fops = &radio_fops,
1742 .ioctl_ops = &radio_ioctl_ops,
1743 };
1744
1745 /* -----------------------------------------------------------------
1746 * Initialization and module stuff
1747 * ------------------------------------------------------------------
1748 */
1749
1750 static struct video_device *vdev_init(struct tm6000_core *dev,
1751 const struct video_device
1752 *template, const char *type_name)
1753 {
1754 struct video_device *vfd;
1755
1756 vfd = video_device_alloc();
1757 if (NULL == vfd)
1758 return NULL;
1759
1760 *vfd = *template;
1761 vfd->v4l2_dev = &dev->v4l2_dev;
1762 vfd->release = video_device_release;
1763 vfd->debug = tm6000_debug;
1764 vfd->lock = &dev->lock;
1765
1766 snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
1767
1768 video_set_drvdata(vfd, dev);
1769 return vfd;
1770 }
1771
1772 int tm6000_v4l2_register(struct tm6000_core *dev)
1773 {
1774 int ret = -1;
1775
1776 dev->vfd = vdev_init(dev, &tm6000_template, "video");
1777
1778 if (!dev->vfd) {
1779 printk(KERN_INFO "%s: can't register video device\n",
1780 dev->name);
1781 return -ENOMEM;
1782 }
1783
1784 /* init video dma queues */
1785 INIT_LIST_HEAD(&dev->vidq.active);
1786 INIT_LIST_HEAD(&dev->vidq.queued);
1787
1788 ret = video_register_device(dev->vfd, VFL_TYPE_GRABBER, video_nr);
1789
1790 if (ret < 0) {
1791 printk(KERN_INFO "%s: can't register video device\n",
1792 dev->name);
1793 return ret;
1794 }
1795
1796 printk(KERN_INFO "%s: registered device %s\n",
1797 dev->name, video_device_node_name(dev->vfd));
1798
1799 if (dev->caps.has_radio) {
1800 dev->radio_dev = vdev_init(dev, &tm6000_radio_template,
1801 "radio");
1802 if (!dev->radio_dev) {
1803 printk(KERN_INFO "%s: can't register radio device\n",
1804 dev->name);
1805 return ret; /* FIXME release resource */
1806 }
1807
1808 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
1809 radio_nr);
1810 if (ret < 0) {
1811 printk(KERN_INFO "%s: can't register radio device\n",
1812 dev->name);
1813 return ret; /* FIXME release resource */
1814 }
1815
1816 printk(KERN_INFO "%s: registered device %s\n",
1817 dev->name, video_device_node_name(dev->radio_dev));
1818 }
1819
1820 printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
1821 return ret;
1822 }
1823
1824 int tm6000_v4l2_unregister(struct tm6000_core *dev)
1825 {
1826 video_unregister_device(dev->vfd);
1827
1828 if (dev->radio_dev) {
1829 if (video_is_registered(dev->radio_dev))
1830 video_unregister_device(dev->radio_dev);
1831 else
1832 video_device_release(dev->radio_dev);
1833 dev->radio_dev = NULL;
1834 }
1835
1836 return 0;
1837 }
1838
1839 int tm6000_v4l2_exit(void)
1840 {
1841 return 0;
1842 }
1843
1844 module_param(video_nr, int, 0);
1845 MODULE_PARM_DESC(video_nr, "Allow changing video device number");
1846
1847 module_param_named(debug, tm6000_debug, int, 0444);
1848 MODULE_PARM_DESC(debug, "activates debug info");
1849
1850 module_param(vid_limit, int, 0644);
1851 MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
1852
Linux kernel - Deliverables
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