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staging: tm6000: cleaned up code in tm6000-video.c according to coding style
[deliverable/linux.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 <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 char *outp;
173
174 if (list_empty(&dma_q->active)) {
175 dprintk(dev, V4L2_DEBUG_QUEUE, "No active queue to serve\n");
176 *buf = NULL;
177 return;
178 }
179
180 *buf = list_entry(dma_q->active.next,
181 struct tm6000_buffer, vb.queue);
182
183 if (!buf)
184 return;
185
186 /* Cleans up buffer - Useful for testing for frame/URB loss */
187 outp = videobuf_to_vmalloc(&(*buf)->vb);
188
189 return;
190 }
191
192 /*
193 * Announces that a buffer were filled and request the next
194 */
195 static inline void buffer_filled(struct tm6000_core *dev,
196 struct tm6000_dmaqueue *dma_q,
197 struct tm6000_buffer *buf)
198 {
199 /* Advice that buffer was filled */
200 dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n", buf, buf->vb.i);
201 buf->vb.state = VIDEOBUF_DONE;
202 buf->vb.field_count++;
203 do_gettimeofday(&buf->vb.ts);
204
205 list_del(&buf->vb.queue);
206 wake_up(&buf->vb.done);
207 }
208
209 const char *tm6000_msg_type[] = {
210 "unknown(0)", /* 0 */
211 "video", /* 1 */
212 "audio", /* 2 */
213 "vbi", /* 3 */
214 "pts", /* 4 */
215 "err", /* 5 */
216 "unknown(6)", /* 6 */
217 "unknown(7)", /* 7 */
218 };
219
220 /*
221 * Identify the tm5600/6000 buffer header type and properly handles
222 */
223 static int copy_streams(u8 *data, unsigned long len,
224 struct urb *urb)
225 {
226 struct tm6000_dmaqueue *dma_q = urb->context;
227 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
228 u8 *ptr = data, *endp = data+len, c;
229 unsigned long header = 0;
230 int rc = 0;
231 unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
232 struct tm6000_buffer *vbuf = NULL;
233 char *voutp = NULL;
234 unsigned int linewidth;
235
236 if (!dev->radio) {
237 /* get video buffer */
238 get_next_buf(dma_q, &vbuf);
239
240 if (!vbuf)
241 return rc;
242 voutp = videobuf_to_vmalloc(&vbuf->vb);
243
244 if (!voutp)
245 return 0;
246 }
247
248 for (ptr = data; ptr < endp;) {
249 if (!dev->isoc_ctl.cmd) {
250 /* Header */
251 if (dev->isoc_ctl.tmp_buf_len > 0) {
252 /* from last urb or packet */
253 header = dev->isoc_ctl.tmp_buf;
254 if (4 - dev->isoc_ctl.tmp_buf_len > 0) {
255 memcpy((u8 *)&header +
256 dev->isoc_ctl.tmp_buf_len,
257 ptr,
258 4 - dev->isoc_ctl.tmp_buf_len);
259 ptr += 4 - dev->isoc_ctl.tmp_buf_len;
260 }
261 dev->isoc_ctl.tmp_buf_len = 0;
262 } else {
263 if (ptr + 3 >= endp) {
264 /* have incomplete header */
265 dev->isoc_ctl.tmp_buf_len = endp - ptr;
266 memcpy(&dev->isoc_ctl.tmp_buf, ptr,
267 dev->isoc_ctl.tmp_buf_len);
268 return rc;
269 }
270 /* Seek for sync */
271 for (; ptr < endp - 3; ptr++) {
272 if (*(ptr + 3) == 0x47)
273 break;
274 }
275 /* Get message header */
276 header = *(unsigned long *)ptr;
277 ptr += 4;
278 }
279
280 /* split the header fields */
281 c = (header >> 24) & 0xff;
282 size = ((header & 0x7e) << 1);
283 if (size > 0)
284 size -= 4;
285 block = (header >> 7) & 0xf;
286 field = (header >> 11) & 0x1;
287 line = (header >> 12) & 0x1ff;
288 cmd = (header >> 21) & 0x7;
289 /* Validates haeder fields */
290 if (size > TM6000_URB_MSG_LEN)
291 size = TM6000_URB_MSG_LEN;
292 pktsize = TM6000_URB_MSG_LEN;
293 /* calculate position in buffer
294 * and change the buffer
295 */
296 switch (cmd) {
297 case TM6000_URB_MSG_VIDEO:
298 if (!dev->radio) {
299 if ((dev->isoc_ctl.vfield != field) &&
300 (field == 1)) {
301 /* Announces that a new buffer
302 * were filled
303 */
304 buffer_filled(dev, dma_q, vbuf);
305 dprintk(dev, V4L2_DEBUG_ISOC,
306 "new buffer filled\n");
307 get_next_buf(dma_q, &vbuf);
308 if (!vbuf)
309 return rc;
310 voutp = videobuf_to_vmalloc(&vbuf->vb);
311 if (!voutp)
312 return rc;
313 memset(voutp, 0, vbuf->vb.size);
314 }
315 linewidth = vbuf->vb.width << 1;
316 pos = ((line << 1) - field - 1) *
317 linewidth + block * TM6000_URB_MSG_LEN;
318 /* Don't allow to write out of the buffer */
319 if (pos + size > vbuf->vb.size)
320 cmd = TM6000_URB_MSG_ERR;
321 dev->isoc_ctl.vfield = field;
322 }
323 break;
324 case TM6000_URB_MSG_VBI:
325 break;
326 case TM6000_URB_MSG_AUDIO:
327 case TM6000_URB_MSG_PTS:
328 size = pktsize; /* Size is always 180 bytes */
329 break;
330 }
331 } else {
332 /* Continue the last copy */
333 cmd = dev->isoc_ctl.cmd;
334 size = dev->isoc_ctl.size;
335 pos = dev->isoc_ctl.pos;
336 pktsize = dev->isoc_ctl.pktsize;
337 field = dev->isoc_ctl.field;
338 }
339 cpysize = (endp - ptr > size) ? size : endp - ptr;
340 if (cpysize) {
341 /* copy data in different buffers */
342 switch (cmd) {
343 case TM6000_URB_MSG_VIDEO:
344 /* Fills video buffer */
345 if (vbuf)
346 memcpy(&voutp[pos], ptr, cpysize);
347 break;
348 case TM6000_URB_MSG_AUDIO: {
349 int i;
350 for (i = 0; i < cpysize; i += 2)
351 swab16s((u16 *)(ptr + i));
352
353 tm6000_call_fillbuf(dev, TM6000_AUDIO, ptr, cpysize);
354 break;
355 }
356 case TM6000_URB_MSG_VBI:
357 /* Need some code to copy vbi buffer */
358 break;
359 case TM6000_URB_MSG_PTS: {
360 /* Need some code to copy pts */
361 u32 pts;
362 pts = *(u32 *)ptr;
363 dprintk(dev, V4L2_DEBUG_ISOC, "field %d, PTS %x",
364 field, pts);
365 break;
366 }
367 }
368 }
369 if (ptr + pktsize > endp) {
370 /* End of URB packet, but cmd processing is not
371 * complete. Preserve the state for a next packet
372 */
373 dev->isoc_ctl.pos = pos + cpysize;
374 dev->isoc_ctl.size = size - cpysize;
375 dev->isoc_ctl.cmd = cmd;
376 dev->isoc_ctl.field = field;
377 dev->isoc_ctl.pktsize = pktsize - (endp - ptr);
378 ptr += endp - ptr;
379 } else {
380 dev->isoc_ctl.cmd = 0;
381 ptr += pktsize;
382 }
383 }
384 return 0;
385 }
386
387 /*
388 * Identify the tm5600/6000 buffer header type and properly handles
389 */
390 static int copy_multiplexed(u8 *ptr, unsigned long len,
391 struct urb *urb)
392 {
393 struct tm6000_dmaqueue *dma_q = urb->context;
394 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
395 unsigned int pos = dev->isoc_ctl.pos, cpysize;
396 int rc = 1;
397 struct tm6000_buffer *buf;
398 char *outp = NULL;
399
400 get_next_buf(dma_q, &buf);
401 if (buf)
402 outp = videobuf_to_vmalloc(&buf->vb);
403
404 if (!outp)
405 return 0;
406
407 while (len > 0) {
408 cpysize = min(len, buf->vb.size-pos);
409 memcpy(&outp[pos], ptr, cpysize);
410 pos += cpysize;
411 ptr += cpysize;
412 len -= cpysize;
413 if (pos >= buf->vb.size) {
414 pos = 0;
415 /* Announces that a new buffer were filled */
416 buffer_filled(dev, dma_q, buf);
417 dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
418 get_next_buf(dma_q, &buf);
419 if (!buf)
420 break;
421 outp = videobuf_to_vmalloc(&(buf->vb));
422 if (!outp)
423 return rc;
424 pos = 0;
425 }
426 }
427
428 dev->isoc_ctl.pos = pos;
429 return rc;
430 }
431
432 static inline void print_err_status(struct tm6000_core *dev,
433 int packet, int status)
434 {
435 char *errmsg = "Unknown";
436
437 switch (status) {
438 case -ENOENT:
439 errmsg = "unlinked synchronuously";
440 break;
441 case -ECONNRESET:
442 errmsg = "unlinked asynchronuously";
443 break;
444 case -ENOSR:
445 errmsg = "Buffer error (overrun)";
446 break;
447 case -EPIPE:
448 errmsg = "Stalled (device not responding)";
449 break;
450 case -EOVERFLOW:
451 errmsg = "Babble (bad cable?)";
452 break;
453 case -EPROTO:
454 errmsg = "Bit-stuff error (bad cable?)";
455 break;
456 case -EILSEQ:
457 errmsg = "CRC/Timeout (could be anything)";
458 break;
459 case -ETIME:
460 errmsg = "Device does not respond";
461 break;
462 }
463 if (packet < 0) {
464 dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
465 status, errmsg);
466 } else {
467 dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n",
468 packet, status, errmsg);
469 }
470 }
471
472
473 /*
474 * Controls the isoc copy of each urb packet
475 */
476 static inline int tm6000_isoc_copy(struct urb *urb)
477 {
478 struct tm6000_dmaqueue *dma_q = urb->context;
479 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
480 int i, len = 0, rc = 1, status;
481 char *p;
482
483 if (urb->status < 0) {
484 print_err_status(dev, -1, urb->status);
485 return 0;
486 }
487
488 for (i = 0; i < urb->number_of_packets; i++) {
489 status = urb->iso_frame_desc[i].status;
490
491 if (status < 0) {
492 print_err_status(dev, i, status);
493 continue;
494 }
495
496 len = urb->iso_frame_desc[i].actual_length;
497
498 if (len > 0) {
499 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
500 if (!urb->iso_frame_desc[i].status) {
501 if ((dev->fourcc) == V4L2_PIX_FMT_TM6000) {
502 rc = copy_multiplexed(p, len, urb);
503 if (rc <= 0)
504 return rc;
505 } else {
506 copy_streams(p, len, urb);
507 }
508 }
509 }
510 }
511 return rc;
512 }
513
514 /* ------------------------------------------------------------------
515 * URB control
516 * ------------------------------------------------------------------
517 */
518
519 /*
520 * IRQ callback, called by URB callback
521 */
522 static void tm6000_irq_callback(struct urb *urb)
523 {
524 struct tm6000_dmaqueue *dma_q = urb->context;
525 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
526 int i;
527
528 if (!dev)
529 return;
530
531 spin_lock(&dev->slock);
532 tm6000_isoc_copy(urb);
533 spin_unlock(&dev->slock);
534
535 /* Reset urb buffers */
536 for (i = 0; i < urb->number_of_packets; i++) {
537 urb->iso_frame_desc[i].status = 0;
538 urb->iso_frame_desc[i].actual_length = 0;
539 }
540
541 urb->status = usb_submit_urb(urb, GFP_ATOMIC);
542 if (urb->status)
543 tm6000_err("urb resubmit failed (error=%i)\n",
544 urb->status);
545 }
546
547 /*
548 * Stop and Deallocate URBs
549 */
550 static void tm6000_uninit_isoc(struct tm6000_core *dev)
551 {
552 struct urb *urb;
553 int i;
554
555 dev->isoc_ctl.buf = NULL;
556 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
557 urb = dev->isoc_ctl.urb[i];
558 if (urb) {
559 usb_kill_urb(urb);
560 usb_unlink_urb(urb);
561 if (dev->isoc_ctl.transfer_buffer[i]) {
562 usb_free_coherent(dev->udev,
563 urb->transfer_buffer_length,
564 dev->isoc_ctl.transfer_buffer[i],
565 urb->transfer_dma);
566 }
567 usb_free_urb(urb);
568 dev->isoc_ctl.urb[i] = NULL;
569 }
570 dev->isoc_ctl.transfer_buffer[i] = NULL;
571 }
572
573 kfree(dev->isoc_ctl.urb);
574 kfree(dev->isoc_ctl.transfer_buffer);
575
576 dev->isoc_ctl.urb = NULL;
577 dev->isoc_ctl.transfer_buffer = NULL;
578 dev->isoc_ctl.num_bufs = 0;
579 }
580
581 /*
582 * Allocate URBs and start IRQ
583 */
584 static int tm6000_prepare_isoc(struct tm6000_core *dev)
585 {
586 struct tm6000_dmaqueue *dma_q = &dev->vidq;
587 int i, j, sb_size, pipe, size, max_packets, num_bufs = 8;
588 struct urb *urb;
589
590 /* De-allocates all pending stuff */
591 tm6000_uninit_isoc(dev);
592 /* Stop interrupt USB pipe */
593 tm6000_ir_int_stop(dev);
594
595 usb_set_interface(dev->udev,
596 dev->isoc_in.bInterfaceNumber,
597 dev->isoc_in.bAlternateSetting);
598
599 /* Start interrupt USB pipe */
600 tm6000_ir_int_start(dev);
601
602 pipe = usb_rcvisocpipe(dev->udev,
603 dev->isoc_in.endp->desc.bEndpointAddress &
604 USB_ENDPOINT_NUMBER_MASK);
605
606 size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
607
608 if (size > dev->isoc_in.maxsize)
609 size = dev->isoc_in.maxsize;
610
611 dev->isoc_ctl.max_pkt_size = size;
612
613 max_packets = TM6000_MAX_ISO_PACKETS;
614 sb_size = max_packets * size;
615
616 dev->isoc_ctl.num_bufs = num_bufs;
617
618 dev->isoc_ctl.urb = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
619 if (!dev->isoc_ctl.urb) {
620 tm6000_err("cannot alloc memory for usb buffers\n");
621 return -ENOMEM;
622 }
623
624 dev->isoc_ctl.transfer_buffer = kmalloc(sizeof(void *)*num_bufs,
625 GFP_KERNEL);
626 if (!dev->isoc_ctl.transfer_buffer) {
627 tm6000_err("cannot allocate memory for usbtransfer\n");
628 kfree(dev->isoc_ctl.urb);
629 return -ENOMEM;
630 }
631
632 dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets"
633 " (%d bytes) of %d bytes each to handle %u size\n",
634 max_packets, num_bufs, sb_size,
635 dev->isoc_in.maxsize, size);
636
637 /* allocate urbs and transfer buffers */
638 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
639 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
640 if (!urb) {
641 tm6000_err("cannot alloc isoc_ctl.urb %i\n", i);
642 tm6000_uninit_isoc(dev);
643 usb_free_urb(urb);
644 return -ENOMEM;
645 }
646 dev->isoc_ctl.urb[i] = urb;
647
648 dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->udev,
649 sb_size, GFP_KERNEL, &urb->transfer_dma);
650 if (!dev->isoc_ctl.transfer_buffer[i]) {
651 tm6000_err("unable to allocate %i bytes for transfer"
652 " buffer %i%s\n",
653 sb_size, i,
654 in_interrupt() ? " while in int" : "");
655 tm6000_uninit_isoc(dev);
656 return -ENOMEM;
657 }
658 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
659
660 usb_fill_bulk_urb(urb, dev->udev, pipe,
661 dev->isoc_ctl.transfer_buffer[i], sb_size,
662 tm6000_irq_callback, dma_q);
663 urb->interval = dev->isoc_in.endp->desc.bInterval;
664 urb->number_of_packets = max_packets;
665 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
666
667 for (j = 0; j < max_packets; j++) {
668 urb->iso_frame_desc[j].offset = size * j;
669 urb->iso_frame_desc[j].length = size;
670 }
671 }
672
673 return 0;
674 }
675
676 static int tm6000_start_thread(struct tm6000_core *dev)
677 {
678 struct tm6000_dmaqueue *dma_q = &dev->vidq;
679 int i;
680
681 dma_q->frame = 0;
682 dma_q->ini_jiffies = jiffies;
683
684 init_waitqueue_head(&dma_q->wq);
685
686 /* submit urbs and enables IRQ */
687 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
688 int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
689 if (rc) {
690 tm6000_err("submit of urb %i failed (error=%i)\n", i,
691 rc);
692 tm6000_uninit_isoc(dev);
693 return rc;
694 }
695 }
696
697 return 0;
698 }
699
700 /* ------------------------------------------------------------------
701 * Videobuf operations
702 * ------------------------------------------------------------------
703 */
704
705 static int
706 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
707 {
708 struct tm6000_fh *fh = vq->priv_data;
709
710 *size = fh->fmt->depth * fh->width * fh->height >> 3;
711 if (0 == *count)
712 *count = TM6000_DEF_BUF;
713
714 if (*count < TM6000_MIN_BUF)
715 *count = TM6000_MIN_BUF;
716
717 while (*size * *count > vid_limit * 1024 * 1024)
718 (*count)--;
719
720 return 0;
721 }
722
723 static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf)
724 {
725 struct tm6000_fh *fh = vq->priv_data;
726 struct tm6000_core *dev = fh->dev;
727 unsigned long flags;
728
729 if (in_interrupt())
730 BUG();
731
732 /* We used to wait for the buffer to finish here, but this didn't work
733 because, as we were keeping the state as VIDEOBUF_QUEUED,
734 videobuf_queue_cancel marked it as finished for us.
735 (Also, it could wedge forever if the hardware was misconfigured.)
736
737 This should be safe; by the time we get here, the buffer isn't
738 queued anymore. If we ever start marking the buffers as
739 VIDEOBUF_ACTIVE, it won't be, though.
740 */
741 spin_lock_irqsave(&dev->slock, flags);
742 if (dev->isoc_ctl.buf == buf)
743 dev->isoc_ctl.buf = NULL;
744 spin_unlock_irqrestore(&dev->slock, flags);
745
746 videobuf_vmalloc_free(&buf->vb);
747 buf->vb.state = VIDEOBUF_NEEDS_INIT;
748 }
749
750 static int
751 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
752 enum v4l2_field field)
753 {
754 struct tm6000_fh *fh = vq->priv_data;
755 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
756 struct tm6000_core *dev = fh->dev;
757 int rc = 0, urb_init = 0;
758
759 BUG_ON(NULL == fh->fmt);
760
761
762 /* FIXME: It assumes depth=2 */
763 /* The only currently supported format is 16 bits/pixel */
764 buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
765 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
766 return -EINVAL;
767
768 if (buf->fmt != fh->fmt ||
769 buf->vb.width != fh->width ||
770 buf->vb.height != fh->height ||
771 buf->vb.field != field) {
772 buf->fmt = fh->fmt;
773 buf->vb.width = fh->width;
774 buf->vb.height = fh->height;
775 buf->vb.field = field;
776 buf->vb.state = VIDEOBUF_NEEDS_INIT;
777 }
778
779 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
780 rc = videobuf_iolock(vq, &buf->vb, NULL);
781 if (rc != 0)
782 goto fail;
783 urb_init = 1;
784 }
785
786 if (!dev->isoc_ctl.num_bufs)
787 urb_init = 1;
788
789 if (urb_init) {
790 rc = tm6000_prepare_isoc(dev);
791 if (rc < 0)
792 goto fail;
793
794 rc = tm6000_start_thread(dev);
795 if (rc < 0)
796 goto fail;
797
798 }
799
800 buf->vb.state = VIDEOBUF_PREPARED;
801 return 0;
802
803 fail:
804 free_buffer(vq, buf);
805 return rc;
806 }
807
808 static void
809 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
810 {
811 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
812 struct tm6000_fh *fh = vq->priv_data;
813 struct tm6000_core *dev = fh->dev;
814 struct tm6000_dmaqueue *vidq = &dev->vidq;
815
816 buf->vb.state = VIDEOBUF_QUEUED;
817 list_add_tail(&buf->vb.queue, &vidq->active);
818 }
819
820 static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
821 {
822 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
823
824 free_buffer(vq, buf);
825 }
826
827 static struct videobuf_queue_ops tm6000_video_qops = {
828 .buf_setup = buffer_setup,
829 .buf_prepare = buffer_prepare,
830 .buf_queue = buffer_queue,
831 .buf_release = buffer_release,
832 };
833
834 /* ------------------------------------------------------------------
835 * IOCTL handling
836 * ------------------------------------------------------------------
837 */
838
839 static bool is_res_read(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 && dev->is_res_read)
843 return true;
844
845 return false;
846 }
847
848 static bool is_res_streaming(struct tm6000_core *dev, struct tm6000_fh *fh)
849 {
850 /* Is the current fh handling it? if so, that's OK */
851 if (dev->resources == fh)
852 return true;
853
854 return false;
855 }
856
857 static bool res_get(struct tm6000_core *dev, struct tm6000_fh *fh,
858 bool is_res_read)
859 {
860 /* Is the current fh handling it? if so, that's OK */
861 if (dev->resources == fh && dev->is_res_read == is_res_read)
862 return true;
863
864 /* is it free? */
865 if (dev->resources)
866 return false;
867
868 /* grab it */
869 dev->resources = fh;
870 dev->is_res_read = is_res_read;
871 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
872 return true;
873 }
874
875 static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
876 {
877 /* Is the current fh handling it? if so, that's OK */
878 if (dev->resources != fh)
879 return;
880
881 dev->resources = NULL;
882 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
883 }
884
885 /* ------------------------------------------------------------------
886 * IOCTL vidioc handling
887 * ------------------------------------------------------------------
888 */
889 static int vidioc_querycap(struct file *file, void *priv,
890 struct v4l2_capability *cap)
891 {
892 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
893
894 strlcpy(cap->driver, "tm6000", sizeof(cap->driver));
895 strlcpy(cap->card, "Trident TVMaster TM5600/6000/6010", sizeof(cap->card));
896 cap->version = TM6000_VERSION;
897 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
898 V4L2_CAP_STREAMING |
899 V4L2_CAP_AUDIO |
900 V4L2_CAP_READWRITE;
901
902 if (dev->tuner_type != TUNER_ABSENT)
903 cap->capabilities |= V4L2_CAP_TUNER;
904
905 return 0;
906 }
907
908 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
909 struct v4l2_fmtdesc *f)
910 {
911 if (unlikely(f->index >= ARRAY_SIZE(format)))
912 return -EINVAL;
913
914 strlcpy(f->description, format[f->index].name, sizeof(f->description));
915 f->pixelformat = format[f->index].fourcc;
916 return 0;
917 }
918
919 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
920 struct v4l2_format *f)
921 {
922 struct tm6000_fh *fh = priv;
923
924 f->fmt.pix.width = fh->width;
925 f->fmt.pix.height = fh->height;
926 f->fmt.pix.field = fh->vb_vidq.field;
927 f->fmt.pix.pixelformat = fh->fmt->fourcc;
928 f->fmt.pix.bytesperline =
929 (f->fmt.pix.width * fh->fmt->depth) >> 3;
930 f->fmt.pix.sizeimage =
931 f->fmt.pix.height * f->fmt.pix.bytesperline;
932
933 return 0;
934 }
935
936 static struct tm6000_fmt *format_by_fourcc(unsigned int fourcc)
937 {
938 unsigned int i;
939
940 for (i = 0; i < ARRAY_SIZE(format); i++)
941 if (format[i].fourcc == fourcc)
942 return format+i;
943 return NULL;
944 }
945
946 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
947 struct v4l2_format *f)
948 {
949 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
950 struct tm6000_fmt *fmt;
951 enum v4l2_field field;
952
953 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
954 if (NULL == fmt) {
955 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Fourcc format (0x%08x)"
956 " invalid.\n", f->fmt.pix.pixelformat);
957 return -EINVAL;
958 }
959
960 field = f->fmt.pix.field;
961
962 if (field == V4L2_FIELD_ANY)
963 field = V4L2_FIELD_SEQ_TB;
964 else if (V4L2_FIELD_INTERLACED != field) {
965 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Field type invalid.\n");
966 return -EINVAL;
967 }
968
969 tm6000_get_std_res(dev);
970
971 f->fmt.pix.width = dev->width;
972 f->fmt.pix.height = dev->height;
973
974 f->fmt.pix.width &= ~0x01;
975
976 f->fmt.pix.field = field;
977
978 f->fmt.pix.bytesperline =
979 (f->fmt.pix.width * fmt->depth) >> 3;
980 f->fmt.pix.sizeimage =
981 f->fmt.pix.height * f->fmt.pix.bytesperline;
982
983 return 0;
984 }
985
986 /*FIXME: This seems to be generic enough to be at videodev2 */
987 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
988 struct v4l2_format *f)
989 {
990 struct tm6000_fh *fh = priv;
991 struct tm6000_core *dev = fh->dev;
992 int ret = vidioc_try_fmt_vid_cap(file, fh, f);
993 if (ret < 0)
994 return ret;
995
996 fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
997 fh->width = f->fmt.pix.width;
998 fh->height = f->fmt.pix.height;
999 fh->vb_vidq.field = f->fmt.pix.field;
1000 fh->type = f->type;
1001
1002 dev->fourcc = f->fmt.pix.pixelformat;
1003
1004 tm6000_set_fourcc_format(dev);
1005
1006 return 0;
1007 }
1008
1009 static int vidioc_reqbufs(struct file *file, void *priv,
1010 struct v4l2_requestbuffers *p)
1011 {
1012 struct tm6000_fh *fh = priv;
1013
1014 return videobuf_reqbufs(&fh->vb_vidq, p);
1015 }
1016
1017 static int vidioc_querybuf(struct file *file, void *priv,
1018 struct v4l2_buffer *p)
1019 {
1020 struct tm6000_fh *fh = priv;
1021
1022 return videobuf_querybuf(&fh->vb_vidq, p);
1023 }
1024
1025 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1026 {
1027 struct tm6000_fh *fh = priv;
1028
1029 return videobuf_qbuf(&fh->vb_vidq, p);
1030 }
1031
1032 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1033 {
1034 struct tm6000_fh *fh = priv;
1035
1036 return videobuf_dqbuf(&fh->vb_vidq, p,
1037 file->f_flags & O_NONBLOCK);
1038 }
1039
1040 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
1041 {
1042 struct tm6000_fh *fh = priv;
1043 struct tm6000_core *dev = fh->dev;
1044
1045 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1046 return -EINVAL;
1047 if (i != fh->type)
1048 return -EINVAL;
1049
1050 if (!res_get(dev, fh, false))
1051 return -EBUSY;
1052 return videobuf_streamon(&fh->vb_vidq);
1053 }
1054
1055 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
1056 {
1057 struct tm6000_fh *fh = priv;
1058 struct tm6000_core *dev = fh->dev;
1059
1060 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1061 return -EINVAL;
1062 if (i != fh->type)
1063 return -EINVAL;
1064
1065 videobuf_streamoff(&fh->vb_vidq);
1066 res_free(dev, fh);
1067
1068 return 0;
1069 }
1070
1071 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1072 {
1073 int rc = 0;
1074 struct tm6000_fh *fh = priv;
1075 struct tm6000_core *dev = fh->dev;
1076
1077 dev->norm = *norm;
1078 rc = tm6000_init_analog_mode(dev);
1079
1080 fh->width = dev->width;
1081 fh->height = dev->height;
1082
1083 if (rc < 0)
1084 return rc;
1085
1086 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1087
1088 return 0;
1089 }
1090
1091 static const char *iname[] = {
1092 [TM6000_INPUT_TV] = "Television",
1093 [TM6000_INPUT_COMPOSITE1] = "Composite 1",
1094 [TM6000_INPUT_COMPOSITE2] = "Composite 2",
1095 [TM6000_INPUT_SVIDEO] = "S-Video",
1096 };
1097
1098 static int vidioc_enum_input(struct file *file, void *priv,
1099 struct v4l2_input *i)
1100 {
1101 struct tm6000_fh *fh = priv;
1102 struct tm6000_core *dev = fh->dev;
1103 unsigned int n;
1104
1105 n = i->index;
1106 if (n >= 3)
1107 return -EINVAL;
1108
1109 if (!dev->vinput[n].type)
1110 return -EINVAL;
1111
1112 i->index = n;
1113
1114 if (dev->vinput[n].type == TM6000_INPUT_TV)
1115 i->type = V4L2_INPUT_TYPE_TUNER;
1116 else
1117 i->type = V4L2_INPUT_TYPE_CAMERA;
1118
1119 strcpy(i->name, iname[dev->vinput[n].type]);
1120
1121 i->std = TM6000_STD;
1122
1123 return 0;
1124 }
1125
1126 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1127 {
1128 struct tm6000_fh *fh = priv;
1129 struct tm6000_core *dev = fh->dev;
1130
1131 *i = dev->input;
1132
1133 return 0;
1134 }
1135
1136 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1137 {
1138 struct tm6000_fh *fh = priv;
1139 struct tm6000_core *dev = fh->dev;
1140 int rc = 0;
1141
1142 if (i >= 3)
1143 return -EINVAL;
1144 if (!dev->vinput[i].type)
1145 return -EINVAL;
1146
1147 dev->input = i;
1148
1149 rc = vidioc_s_std(file, priv, &dev->vfd->current_norm);
1150
1151 return rc;
1152 }
1153
1154 /* --- controls ---------------------------------------------- */
1155 static int vidioc_queryctrl(struct file *file, void *priv,
1156 struct v4l2_queryctrl *qc)
1157 {
1158 int i;
1159
1160 for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
1161 if (qc->id && qc->id == tm6000_qctrl[i].id) {
1162 memcpy(qc, &(tm6000_qctrl[i]),
1163 sizeof(*qc));
1164 return 0;
1165 }
1166
1167 return -EINVAL;
1168 }
1169
1170 static int vidioc_g_ctrl(struct file *file, void *priv,
1171 struct v4l2_control *ctrl)
1172 {
1173 struct tm6000_fh *fh = priv;
1174 struct tm6000_core *dev = fh->dev;
1175 int val;
1176
1177 /* FIXME: Probably, those won't work! Maybe we need shadow regs */
1178 switch (ctrl->id) {
1179 case V4L2_CID_CONTRAST:
1180 val = tm6000_get_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, 0);
1181 break;
1182 case V4L2_CID_BRIGHTNESS:
1183 val = tm6000_get_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, 0);
1184 return 0;
1185 case V4L2_CID_SATURATION:
1186 val = tm6000_get_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, 0);
1187 return 0;
1188 case V4L2_CID_HUE:
1189 val = tm6000_get_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, 0);
1190 return 0;
1191 case V4L2_CID_AUDIO_MUTE:
1192 val = dev->ctl_mute;
1193 return 0;
1194 case V4L2_CID_AUDIO_VOLUME:
1195 val = dev->ctl_volume;
1196 return 0;
1197 default:
1198 return -EINVAL;
1199 }
1200
1201 if (val < 0)
1202 return val;
1203
1204 ctrl->value = val;
1205
1206 return 0;
1207 }
1208 static int vidioc_s_ctrl(struct file *file, void *priv,
1209 struct v4l2_control *ctrl)
1210 {
1211 struct tm6000_fh *fh = priv;
1212 struct tm6000_core *dev = fh->dev;
1213 u8 val = ctrl->value;
1214
1215 switch (ctrl->id) {
1216 case V4L2_CID_CONTRAST:
1217 tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val);
1218 return 0;
1219 case V4L2_CID_BRIGHTNESS:
1220 tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val);
1221 return 0;
1222 case V4L2_CID_SATURATION:
1223 tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val);
1224 return 0;
1225 case V4L2_CID_HUE:
1226 tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val);
1227 return 0;
1228 case V4L2_CID_AUDIO_MUTE:
1229 dev->ctl_mute = val;
1230 tm6000_tvaudio_set_mute(dev, val);
1231 return 0;
1232 case V4L2_CID_AUDIO_VOLUME:
1233 dev->ctl_volume = val;
1234 tm6000_set_volume(dev, val);
1235 return 0;
1236 }
1237 return -EINVAL;
1238 }
1239
1240 static int vidioc_g_tuner(struct file *file, void *priv,
1241 struct v4l2_tuner *t)
1242 {
1243 struct tm6000_fh *fh = priv;
1244 struct tm6000_core *dev = fh->dev;
1245
1246 if (unlikely(UNSET == dev->tuner_type))
1247 return -EINVAL;
1248 if (0 != t->index)
1249 return -EINVAL;
1250
1251 strcpy(t->name, "Television");
1252 t->type = V4L2_TUNER_ANALOG_TV;
1253 t->capability = V4L2_TUNER_CAP_NORM;
1254 t->rangehigh = 0xffffffffUL;
1255 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1256
1257 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1258
1259 t->audmode = dev->amode;
1260
1261 return 0;
1262 }
1263
1264 static int vidioc_s_tuner(struct file *file, void *priv,
1265 struct v4l2_tuner *t)
1266 {
1267 struct tm6000_fh *fh = priv;
1268 struct tm6000_core *dev = fh->dev;
1269
1270 if (UNSET == dev->tuner_type)
1271 return -EINVAL;
1272 if (0 != t->index)
1273 return -EINVAL;
1274
1275 dev->amode = t->audmode;
1276 dprintk(dev, 3, "audio mode: %x\n", t->audmode);
1277
1278 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1279
1280 return 0;
1281 }
1282
1283 static int vidioc_g_frequency(struct file *file, void *priv,
1284 struct v4l2_frequency *f)
1285 {
1286 struct tm6000_fh *fh = priv;
1287 struct tm6000_core *dev = fh->dev;
1288
1289 if (unlikely(UNSET == dev->tuner_type))
1290 return -EINVAL;
1291
1292 f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1293 f->frequency = dev->freq;
1294
1295 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
1296
1297 return 0;
1298 }
1299
1300 static int vidioc_s_frequency(struct file *file, void *priv,
1301 struct v4l2_frequency *f)
1302 {
1303 struct tm6000_fh *fh = priv;
1304 struct tm6000_core *dev = fh->dev;
1305
1306 if (unlikely(UNSET == dev->tuner_type))
1307 return -EINVAL;
1308 if (unlikely(f->tuner != 0))
1309 return -EINVAL;
1310 if (0 == fh->radio && V4L2_TUNER_ANALOG_TV != f->type)
1311 return -EINVAL;
1312 if (1 == fh->radio && V4L2_TUNER_RADIO != f->type)
1313 return -EINVAL;
1314
1315 dev->freq = f->frequency;
1316 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1317
1318 return 0;
1319 }
1320
1321 static int radio_querycap(struct file *file, void *priv,
1322 struct v4l2_capability *cap)
1323 {
1324 struct tm6000_fh *fh = file->private_data;
1325 struct tm6000_core *dev = fh->dev;
1326
1327 strcpy(cap->driver, "tm6000");
1328 strlcpy(cap->card, dev->name, sizeof(dev->name));
1329 sprintf(cap->bus_info, "USB%04x:%04x",
1330 le16_to_cpu(dev->udev->descriptor.idVendor),
1331 le16_to_cpu(dev->udev->descriptor.idProduct));
1332 cap->version = dev->dev_type;
1333 cap->capabilities = V4L2_CAP_TUNER |
1334 V4L2_CAP_AUDIO |
1335 V4L2_CAP_RADIO |
1336 V4L2_CAP_READWRITE |
1337 V4L2_CAP_STREAMING;
1338
1339 return 0;
1340 }
1341
1342 static int radio_g_tuner(struct file *file, void *priv,
1343 struct v4l2_tuner *t)
1344 {
1345 struct tm6000_fh *fh = file->private_data;
1346 struct tm6000_core *dev = fh->dev;
1347
1348 if (0 != t->index)
1349 return -EINVAL;
1350
1351 memset(t, 0, sizeof(*t));
1352 strcpy(t->name, "Radio");
1353 t->type = V4L2_TUNER_RADIO;
1354 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1355
1356 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1357
1358 return 0;
1359 }
1360
1361 static int radio_s_tuner(struct file *file, void *priv,
1362 struct v4l2_tuner *t)
1363 {
1364 struct tm6000_fh *fh = file->private_data;
1365 struct tm6000_core *dev = fh->dev;
1366
1367 if (0 != t->index)
1368 return -EINVAL;
1369
1370 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1371
1372 return 0;
1373 }
1374
1375 static int radio_enum_input(struct file *file, void *priv,
1376 struct v4l2_input *i)
1377 {
1378 struct tm6000_fh *fh = priv;
1379 struct tm6000_core *dev = fh->dev;
1380
1381 if (i->index != 0)
1382 return -EINVAL;
1383
1384 if (!dev->rinput.type)
1385 return -EINVAL;
1386
1387 strcpy(i->name, "Radio");
1388 i->type = V4L2_INPUT_TYPE_TUNER;
1389
1390 return 0;
1391 }
1392
1393 static int radio_g_input(struct file *filp, void *priv, unsigned int *i)
1394 {
1395 struct tm6000_fh *fh = priv;
1396 struct tm6000_core *dev = fh->dev;
1397
1398 if (dev->input != 5)
1399 return -EINVAL;
1400
1401 *i = dev->input - 5;
1402
1403 return 0;
1404 }
1405
1406 static int radio_g_audio(struct file *file, void *priv,
1407 struct v4l2_audio *a)
1408 {
1409 memset(a, 0, sizeof(*a));
1410 strcpy(a->name, "Radio");
1411 return 0;
1412 }
1413
1414 static int radio_s_audio(struct file *file, void *priv,
1415 struct v4l2_audio *a)
1416 {
1417 return 0;
1418 }
1419
1420 static int radio_s_input(struct file *filp, void *priv, unsigned int i)
1421 {
1422 struct tm6000_fh *fh = priv;
1423 struct tm6000_core *dev = fh->dev;
1424
1425 if (i)
1426 return -EINVAL;
1427
1428 if (!dev->rinput.type)
1429 return -EINVAL;
1430
1431 dev->input = i + 5;
1432
1433 return 0;
1434 }
1435
1436 static int radio_s_std(struct file *file, void *fh, v4l2_std_id *norm)
1437 {
1438 return 0;
1439 }
1440
1441 static int radio_queryctrl(struct file *file, void *priv,
1442 struct v4l2_queryctrl *c)
1443 {
1444 const struct v4l2_queryctrl *ctrl;
1445
1446 if (c->id < V4L2_CID_BASE ||
1447 c->id >= V4L2_CID_LASTP1)
1448 return -EINVAL;
1449 if (c->id == V4L2_CID_AUDIO_MUTE) {
1450 ctrl = ctrl_by_id(c->id);
1451 *c = *ctrl;
1452 } else
1453 *c = no_ctrl;
1454
1455 return 0;
1456 }
1457
1458 /* ------------------------------------------------------------------
1459 File operations for the device
1460 ------------------------------------------------------------------*/
1461
1462 static int tm6000_open(struct file *file)
1463 {
1464 struct video_device *vdev = video_devdata(file);
1465 struct tm6000_core *dev = video_drvdata(file);
1466 struct tm6000_fh *fh;
1467 enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1468 int i, rc;
1469 int radio = 0;
1470
1471 printk(KERN_INFO "tm6000: open called (dev=%s)\n",
1472 video_device_node_name(vdev));
1473
1474 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
1475 video_device_node_name(vdev));
1476
1477 switch (vdev->vfl_type) {
1478 case VFL_TYPE_GRABBER:
1479 type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1480 break;
1481 case VFL_TYPE_VBI:
1482 type = V4L2_BUF_TYPE_VBI_CAPTURE;
1483 break;
1484 case VFL_TYPE_RADIO:
1485 radio = 1;
1486 break;
1487 }
1488
1489 /* If more than one user, mutex should be added */
1490 dev->users++;
1491
1492 dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
1493 video_device_node_name(vdev), v4l2_type_names[type],
1494 dev->users);
1495
1496 /* allocate + initialize per filehandle data */
1497 fh = kzalloc(sizeof(*fh), GFP_KERNEL);
1498 if (NULL == fh) {
1499 dev->users--;
1500 return -ENOMEM;
1501 }
1502
1503 file->private_data = fh;
1504 fh->dev = dev;
1505 fh->radio = radio;
1506 dev->radio = radio;
1507 fh->type = type;
1508 dev->fourcc = format[0].fourcc;
1509
1510 fh->fmt = format_by_fourcc(dev->fourcc);
1511
1512 tm6000_get_std_res(dev);
1513
1514 fh->width = dev->width;
1515 fh->height = dev->height;
1516
1517 dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=0x%08lx, dev=0x%08lx, "
1518 "dev->vidq=0x%08lx\n",
1519 (unsigned long)fh, (unsigned long)dev, (unsigned long)&dev->vidq);
1520 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1521 "queued=%d\n", list_empty(&dev->vidq.queued));
1522 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1523 "active=%d\n", list_empty(&dev->vidq.active));
1524
1525 /* initialize hardware on analog mode */
1526 rc = tm6000_init_analog_mode(dev);
1527 if (rc < 0)
1528 return rc;
1529
1530 if (dev->mode != TM6000_MODE_ANALOG) {
1531 /* Put all controls at a sane state */
1532 for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
1533 qctl_regs[i] = tm6000_qctrl[i].default_value;
1534
1535 dev->mode = TM6000_MODE_ANALOG;
1536 }
1537
1538 videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
1539 NULL, &dev->slock,
1540 fh->type,
1541 V4L2_FIELD_INTERLACED,
1542 sizeof(struct tm6000_buffer), fh, &dev->lock);
1543
1544 if (fh->radio) {
1545 dprintk(dev, V4L2_DEBUG_OPEN, "video_open: setting radio device\n");
1546 dev->input = 5;
1547 tm6000_set_audio_rinput(dev);
1548 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1549 tm6000_prepare_isoc(dev);
1550 tm6000_start_thread(dev);
1551 }
1552
1553 return 0;
1554 }
1555
1556 static ssize_t
1557 tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
1558 {
1559 struct tm6000_fh *fh = file->private_data;
1560
1561 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1562 if (!res_get(fh->dev, fh, true))
1563 return -EBUSY;
1564
1565 return videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
1566 file->f_flags & O_NONBLOCK);
1567 }
1568 return 0;
1569 }
1570
1571 static unsigned int
1572 tm6000_poll(struct file *file, struct poll_table_struct *wait)
1573 {
1574 struct tm6000_fh *fh = file->private_data;
1575 struct tm6000_buffer *buf;
1576
1577 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1578 return POLLERR;
1579
1580 if (!!is_res_streaming(fh->dev, fh))
1581 return POLLERR;
1582
1583 if (!is_res_read(fh->dev, fh)) {
1584 /* streaming capture */
1585 if (list_empty(&fh->vb_vidq.stream))
1586 return POLLERR;
1587 buf = list_entry(fh->vb_vidq.stream.next, struct tm6000_buffer, vb.stream);
1588 } else {
1589 /* read() capture */
1590 return videobuf_poll_stream(file, &fh->vb_vidq,
1591 wait);
1592 }
1593 poll_wait(file, &buf->vb.done, wait);
1594 if (buf->vb.state == VIDEOBUF_DONE ||
1595 buf->vb.state == VIDEOBUF_ERROR)
1596 return POLLIN | POLLRDNORM;
1597 return 0;
1598 }
1599
1600 static int tm6000_release(struct file *file)
1601 {
1602 struct tm6000_fh *fh = file->private_data;
1603 struct tm6000_core *dev = fh->dev;
1604 struct video_device *vdev = video_devdata(file);
1605
1606 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
1607 video_device_node_name(vdev), dev->users);
1608
1609 dev->users--;
1610
1611 res_free(dev, fh);
1612 if (!dev->users) {
1613 tm6000_uninit_isoc(dev);
1614 videobuf_mmap_free(&fh->vb_vidq);
1615 }
1616
1617 kfree(fh);
1618
1619 return 0;
1620 }
1621
1622 static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
1623 {
1624 struct tm6000_fh *fh = file->private_data;
1625 int ret;
1626
1627 ret = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1628
1629 return ret;
1630 }
1631
1632 static struct v4l2_file_operations tm6000_fops = {
1633 .owner = THIS_MODULE,
1634 .open = tm6000_open,
1635 .release = tm6000_release,
1636 .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
1637 .read = tm6000_read,
1638 .poll = tm6000_poll,
1639 .mmap = tm6000_mmap,
1640 };
1641
1642 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1643 .vidioc_querycap = vidioc_querycap,
1644 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1645 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1646 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1647 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1648 .vidioc_s_std = vidioc_s_std,
1649 .vidioc_enum_input = vidioc_enum_input,
1650 .vidioc_g_input = vidioc_g_input,
1651 .vidioc_s_input = vidioc_s_input,
1652 .vidioc_queryctrl = vidioc_queryctrl,
1653 .vidioc_g_ctrl = vidioc_g_ctrl,
1654 .vidioc_s_ctrl = vidioc_s_ctrl,
1655 .vidioc_g_tuner = vidioc_g_tuner,
1656 .vidioc_s_tuner = vidioc_s_tuner,
1657 .vidioc_g_frequency = vidioc_g_frequency,
1658 .vidioc_s_frequency = vidioc_s_frequency,
1659 .vidioc_streamon = vidioc_streamon,
1660 .vidioc_streamoff = vidioc_streamoff,
1661 .vidioc_reqbufs = vidioc_reqbufs,
1662 .vidioc_querybuf = vidioc_querybuf,
1663 .vidioc_qbuf = vidioc_qbuf,
1664 .vidioc_dqbuf = vidioc_dqbuf,
1665 };
1666
1667 static struct video_device tm6000_template = {
1668 .name = "tm6000",
1669 .fops = &tm6000_fops,
1670 .ioctl_ops = &video_ioctl_ops,
1671 .release = video_device_release,
1672 .tvnorms = TM6000_STD,
1673 .current_norm = V4L2_STD_NTSC_M,
1674 };
1675
1676 static const struct v4l2_file_operations radio_fops = {
1677 .owner = THIS_MODULE,
1678 .open = tm6000_open,
1679 .release = tm6000_release,
1680 .unlocked_ioctl = video_ioctl2,
1681 };
1682
1683 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1684 .vidioc_querycap = radio_querycap,
1685 .vidioc_g_tuner = radio_g_tuner,
1686 .vidioc_enum_input = radio_enum_input,
1687 .vidioc_g_audio = radio_g_audio,
1688 .vidioc_s_tuner = radio_s_tuner,
1689 .vidioc_s_audio = radio_s_audio,
1690 .vidioc_s_input = radio_s_input,
1691 .vidioc_s_std = radio_s_std,
1692 .vidioc_queryctrl = radio_queryctrl,
1693 .vidioc_g_input = radio_g_input,
1694 .vidioc_g_ctrl = vidioc_g_ctrl,
1695 .vidioc_s_ctrl = vidioc_s_ctrl,
1696 .vidioc_g_frequency = vidioc_g_frequency,
1697 .vidioc_s_frequency = vidioc_s_frequency,
1698 };
1699
1700 struct video_device tm6000_radio_template = {
1701 .name = "tm6000",
1702 .fops = &radio_fops,
1703 .ioctl_ops = &radio_ioctl_ops,
1704 };
1705
1706 /* -----------------------------------------------------------------
1707 * Initialization and module stuff
1708 * ------------------------------------------------------------------
1709 */
1710
1711 static struct video_device *vdev_init(struct tm6000_core *dev,
1712 const struct video_device
1713 *template, const char *type_name)
1714 {
1715 struct video_device *vfd;
1716
1717 vfd = video_device_alloc();
1718 if (NULL == vfd)
1719 return NULL;
1720
1721 *vfd = *template;
1722 vfd->v4l2_dev = &dev->v4l2_dev;
1723 vfd->release = video_device_release;
1724 vfd->debug = tm6000_debug;
1725 vfd->lock = &dev->lock;
1726
1727 snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
1728
1729 video_set_drvdata(vfd, dev);
1730 return vfd;
1731 }
1732
1733 int tm6000_v4l2_register(struct tm6000_core *dev)
1734 {
1735 int ret = -1;
1736
1737 dev->vfd = vdev_init(dev, &tm6000_template, "video");
1738
1739 if (!dev->vfd) {
1740 printk(KERN_INFO "%s: can't register video device\n",
1741 dev->name);
1742 return -ENOMEM;
1743 }
1744
1745 /* init video dma queues */
1746 INIT_LIST_HEAD(&dev->vidq.active);
1747 INIT_LIST_HEAD(&dev->vidq.queued);
1748
1749 ret = video_register_device(dev->vfd, VFL_TYPE_GRABBER, video_nr);
1750
1751 if (ret < 0) {
1752 printk(KERN_INFO "%s: can't register video device\n",
1753 dev->name);
1754 return ret;
1755 }
1756
1757 printk(KERN_INFO "%s: registered device %s\n",
1758 dev->name, video_device_node_name(dev->vfd));
1759
1760 if (dev->caps.has_radio) {
1761 dev->radio_dev = vdev_init(dev, &tm6000_radio_template,
1762 "radio");
1763 if (!dev->radio_dev) {
1764 printk(KERN_INFO "%s: can't register radio device\n",
1765 dev->name);
1766 return ret; /* FIXME release resource */
1767 }
1768
1769 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
1770 radio_nr);
1771 if (ret < 0) {
1772 printk(KERN_INFO "%s: can't register radio device\n",
1773 dev->name);
1774 return ret; /* FIXME release resource */
1775 }
1776
1777 printk(KERN_INFO "%s: registered device %s\n",
1778 dev->name, video_device_node_name(dev->radio_dev));
1779 }
1780
1781 printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
1782 return ret;
1783 }
1784
1785 int tm6000_v4l2_unregister(struct tm6000_core *dev)
1786 {
1787 video_unregister_device(dev->vfd);
1788
1789 if (dev->radio_dev) {
1790 if (video_is_registered(dev->radio_dev))
1791 video_unregister_device(dev->radio_dev);
1792 else
1793 video_device_release(dev->radio_dev);
1794 dev->radio_dev = NULL;
1795 }
1796
1797 return 0;
1798 }
1799
1800 int tm6000_v4l2_exit(void)
1801 {
1802 return 0;
1803 }
1804
1805 module_param(video_nr, int, 0);
1806 MODULE_PARM_DESC(video_nr, "Allow changing video device number");
1807
1808 module_param_named(debug, tm6000_debug, int, 0444);
1809 MODULE_PARM_DESC(debug, "activates debug info");
1810
1811 module_param(vid_limit, int, 0644);
1812 MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
1813
Linux kernel - Deliverables
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