1 // SPDX-License-Identifier: GPL-2.0
2 // tm6000-video.c - driver for TM5600/TM6000/TM6010 USB video capture devices
3 //
4 // Copyright (c) 2006-2007 Mauro Carvalho Chehab <mchehab@kernel.org>
5 //
6 // Copyright (c) 2007 Michel Ludwig <michel.ludwig@gmail.com>
7 // - Fixed module load/unload
8
9 #include <linux/module.h>
10 #include <linux/delay.h>
11 #include <linux/errno.h>
12 #include <linux/fs.h>
13 #include <linux/kernel.h>
14 #include <linux/slab.h>
15 #include <linux/mm.h>
16 #include <linux/ioport.h>
17 #include <linux/init.h>
18 #include <linux/sched.h>
19 #include <linux/random.h>
20 #include <linux/usb.h>
21 #include <linux/videodev2.h>
22 #include <media/v4l2-ioctl.h>
23 #include <media/v4l2-event.h>
24 #include <media/tuner.h>
25 #include <linux/interrupt.h>
26 #include <linux/kthread.h>
27 #include <linux/highmem.h>
28 #include <linux/freezer.h>
29
30 #include "tm6000-regs.h"
31 #include "tm6000.h"
32
33 #define BUFFER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
34
35 /* Limits minimum and default number of buffers */
36 #define TM6000_MIN_BUF 4
37 #define TM6000_DEF_BUF 8
38
39 #define TM6000_NUM_URB_BUF 8
40
41 #define TM6000_MAX_ISO_PACKETS 46 /* Max number of ISO packets */
42
43 /* Declare static vars that will be used as parameters */
44 static unsigned int vid_limit = 16; /* Video memory limit, in Mb */
45 static int video_nr = -1; /* /dev/videoN, -1 for autodetect */
46 static int radio_nr = -1; /* /dev/radioN, -1 for autodetect */
47 static bool keep_urb; /* keep urb buffers allocated */
48
49 /* Debug level */
50 int tm6000_debug;
51 EXPORT_SYMBOL_GPL(tm6000_debug);
52
53 static struct tm6000_fmt format[] = {
54 {
55 .fourcc = V4L2_PIX_FMT_YUYV,
56 .depth = 16,
57 }, {
58 .fourcc = V4L2_PIX_FMT_UYVY,
59 .depth = 16,
60 }, {
61 .fourcc = V4L2_PIX_FMT_TM6000,
62 .depth = 16,
63 }
64 };
65
66 /* ------------------------------------------------------------------
67 * DMA and thread functions
68 * ------------------------------------------------------------------
69 */
70
71 #define norm_maxw(a) 720
72 #define norm_maxh(a) 576
73
74 #define norm_minw(a) norm_maxw(a)
75 #define norm_minh(a) norm_maxh(a)
76
77 /*
78 * video-buf generic routine to get the next available buffer
79 */
get_next_buf(struct tm6000_dmaqueue * dma_q,struct tm6000_buffer ** buf)80 static inline void get_next_buf(struct tm6000_dmaqueue *dma_q,
81 struct tm6000_buffer **buf)
82 {
83 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
84
85 if (list_empty(&dma_q->active)) {
86 dprintk(dev, V4L2_DEBUG_QUEUE, "No active queue to serve\n");
87 *buf = NULL;
88 return;
89 }
90
91 *buf = list_entry(dma_q->active.next,
92 struct tm6000_buffer, vb.queue);
93 }
94
95 /*
96 * Announces that a buffer were filled and request the next
97 */
buffer_filled(struct tm6000_core * dev,struct tm6000_dmaqueue * dma_q,struct tm6000_buffer * buf)98 static inline void buffer_filled(struct tm6000_core *dev,
99 struct tm6000_dmaqueue *dma_q,
100 struct tm6000_buffer *buf)
101 {
102 /* Advice that buffer was filled */
103 dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n", buf, buf->vb.i);
104 buf->vb.state = VIDEOBUF_DONE;
105 buf->vb.field_count++;
106 buf->vb.ts = ktime_get_ns();
107
108 list_del(&buf->vb.queue);
109 wake_up(&buf->vb.done);
110 }
111
112 /*
113 * Identify the tm5600/6000 buffer header type and properly handles
114 */
copy_streams(u8 * data,unsigned long len,struct urb * urb)115 static int copy_streams(u8 *data, unsigned long len,
116 struct urb *urb)
117 {
118 struct tm6000_dmaqueue *dma_q = urb->context;
119 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
120 u8 *ptr = data, *endp = data+len;
121 unsigned long header = 0;
122 int rc = 0;
123 unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
124 struct tm6000_buffer *vbuf = NULL;
125 char *voutp = NULL;
126 unsigned int linewidth;
127
128 if (!dev->radio) {
129 /* get video buffer */
130 get_next_buf(dma_q, &vbuf);
131
132 if (!vbuf)
133 return rc;
134 voutp = videobuf_to_vmalloc(&vbuf->vb);
135
136 if (!voutp)
137 return 0;
138 }
139
140 for (ptr = data; ptr < endp;) {
141 if (!dev->isoc_ctl.cmd) {
142 /* Header */
143 if (dev->isoc_ctl.tmp_buf_len > 0) {
144 /* from last urb or packet */
145 header = dev->isoc_ctl.tmp_buf;
146 if (4 - dev->isoc_ctl.tmp_buf_len > 0) {
147 memcpy((u8 *)&header +
148 dev->isoc_ctl.tmp_buf_len,
149 ptr,
150 4 - dev->isoc_ctl.tmp_buf_len);
151 ptr += 4 - dev->isoc_ctl.tmp_buf_len;
152 }
153 dev->isoc_ctl.tmp_buf_len = 0;
154 } else {
155 if (ptr + 3 >= endp) {
156 /* have incomplete header */
157 dev->isoc_ctl.tmp_buf_len = endp - ptr;
158 memcpy(&dev->isoc_ctl.tmp_buf, ptr,
159 dev->isoc_ctl.tmp_buf_len);
160 return rc;
161 }
162 /* Seek for sync */
163 for (; ptr < endp - 3; ptr++) {
164 if (*(ptr + 3) == 0x47)
165 break;
166 }
167 /* Get message header */
168 header = *(unsigned long *)ptr;
169 ptr += 4;
170 }
171
172 /* split the header fields */
173 size = ((header & 0x7e) << 1);
174 if (size > 0)
175 size -= 4;
176 block = (header >> 7) & 0xf;
177 field = (header >> 11) & 0x1;
178 line = (header >> 12) & 0x1ff;
179 cmd = (header >> 21) & 0x7;
180 /* Validates header fields */
181 if (size > TM6000_URB_MSG_LEN)
182 size = TM6000_URB_MSG_LEN;
183 pktsize = TM6000_URB_MSG_LEN;
184 /*
185 * calculate position in buffer and change the buffer
186 */
187 switch (cmd) {
188 case TM6000_URB_MSG_VIDEO:
189 if (!dev->radio) {
190 if ((dev->isoc_ctl.vfield != field) &&
191 (field == 1)) {
192 /*
193 * Announces that a new buffer
194 * were filled
195 */
196 buffer_filled(dev, dma_q, vbuf);
197 dprintk(dev, V4L2_DEBUG_ISOC,
198 "new buffer filled\n");
199 get_next_buf(dma_q, &vbuf);
200 if (!vbuf)
201 return rc;
202 voutp = videobuf_to_vmalloc(&vbuf->vb);
203 if (!voutp)
204 return rc;
205 memset(voutp, 0, vbuf->vb.size);
206 }
207 linewidth = vbuf->vb.width << 1;
208 pos = ((line << 1) - field - 1) *
209 linewidth + block * TM6000_URB_MSG_LEN;
210 /* Don't allow to write out of the buffer */
211 if (pos + size > vbuf->vb.size)
212 cmd = TM6000_URB_MSG_ERR;
213 dev->isoc_ctl.vfield = field;
214 }
215 break;
216 case TM6000_URB_MSG_VBI:
217 break;
218 case TM6000_URB_MSG_AUDIO:
219 case TM6000_URB_MSG_PTS:
220 size = pktsize; /* Size is always 180 bytes */
221 break;
222 }
223 } else {
224 /* Continue the last copy */
225 cmd = dev->isoc_ctl.cmd;
226 size = dev->isoc_ctl.size;
227 pos = dev->isoc_ctl.pos;
228 pktsize = dev->isoc_ctl.pktsize;
229 field = dev->isoc_ctl.field;
230 }
231 cpysize = (endp - ptr > size) ? size : endp - ptr;
232 if (cpysize) {
233 /* copy data in different buffers */
234 switch (cmd) {
235 case TM6000_URB_MSG_VIDEO:
236 /* Fills video buffer */
237 if (vbuf)
238 memcpy(&voutp[pos], ptr, cpysize);
239 break;
240 case TM6000_URB_MSG_AUDIO: {
241 int i;
242 for (i = 0; i < cpysize; i += 2)
243 swab16s((u16 *)(ptr + i));
244
245 tm6000_call_fillbuf(dev, TM6000_AUDIO, ptr, cpysize);
246 break;
247 }
248 case TM6000_URB_MSG_VBI:
249 /* Need some code to copy vbi buffer */
250 break;
251 case TM6000_URB_MSG_PTS: {
252 /* Need some code to copy pts */
253 u32 pts;
254 pts = *(u32 *)ptr;
255 dprintk(dev, V4L2_DEBUG_ISOC, "field %d, PTS %x",
256 field, pts);
257 break;
258 }
259 }
260 }
261 if (ptr + pktsize > endp) {
262 /*
263 * End of URB packet, but cmd processing is not
264 * complete. Preserve the state for a next packet
265 */
266 dev->isoc_ctl.pos = pos + cpysize;
267 dev->isoc_ctl.size = size - cpysize;
268 dev->isoc_ctl.cmd = cmd;
269 dev->isoc_ctl.field = field;
270 dev->isoc_ctl.pktsize = pktsize - (endp - ptr);
271 ptr += endp - ptr;
272 } else {
273 dev->isoc_ctl.cmd = 0;
274 ptr += pktsize;
275 }
276 }
277 return 0;
278 }
279
280 /*
281 * Identify the tm5600/6000 buffer header type and properly handles
282 */
copy_multiplexed(u8 * ptr,unsigned long len,struct urb * urb)283 static int copy_multiplexed(u8 *ptr, unsigned long len,
284 struct urb *urb)
285 {
286 struct tm6000_dmaqueue *dma_q = urb->context;
287 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
288 unsigned int pos = dev->isoc_ctl.pos, cpysize;
289 int rc = 1;
290 struct tm6000_buffer *buf;
291 char *outp = NULL;
292
293 get_next_buf(dma_q, &buf);
294 if (buf)
295 outp = videobuf_to_vmalloc(&buf->vb);
296
297 if (!outp)
298 return 0;
299
300 while (len > 0) {
301 cpysize = min(len, buf->vb.size-pos);
302 memcpy(&outp[pos], ptr, cpysize);
303 pos += cpysize;
304 ptr += cpysize;
305 len -= cpysize;
306 if (pos >= buf->vb.size) {
307 pos = 0;
308 /* Announces that a new buffer were filled */
309 buffer_filled(dev, dma_q, buf);
310 dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
311 get_next_buf(dma_q, &buf);
312 if (!buf)
313 break;
314 outp = videobuf_to_vmalloc(&(buf->vb));
315 if (!outp)
316 return rc;
317 pos = 0;
318 }
319 }
320
321 dev->isoc_ctl.pos = pos;
322 return rc;
323 }
324
print_err_status(struct tm6000_core * dev,int packet,int status)325 static inline void print_err_status(struct tm6000_core *dev,
326 int packet, int status)
327 {
328 char *errmsg = "Unknown";
329
330 switch (status) {
331 case -ENOENT:
332 errmsg = "unlinked synchronously";
333 break;
334 case -ECONNRESET:
335 errmsg = "unlinked asynchronously";
336 break;
337 case -ENOSR:
338 errmsg = "Buffer error (overrun)";
339 break;
340 case -EPIPE:
341 errmsg = "Stalled (device not responding)";
342 break;
343 case -EOVERFLOW:
344 errmsg = "Babble (bad cable?)";
345 break;
346 case -EPROTO:
347 errmsg = "Bit-stuff error (bad cable?)";
348 break;
349 case -EILSEQ:
350 errmsg = "CRC/Timeout (could be anything)";
351 break;
352 case -ETIME:
353 errmsg = "Device does not respond";
354 break;
355 }
356 if (packet < 0) {
357 dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
358 status, errmsg);
359 } else {
360 dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n",
361 packet, status, errmsg);
362 }
363 }
364
365
366 /*
367 * Controls the isoc copy of each urb packet
368 */
tm6000_isoc_copy(struct urb * urb)369 static inline int tm6000_isoc_copy(struct urb *urb)
370 {
371 struct tm6000_dmaqueue *dma_q = urb->context;
372 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
373 int i, len = 0, rc = 1, status;
374 char *p;
375
376 if (urb->status < 0) {
377 print_err_status(dev, -1, urb->status);
378 return 0;
379 }
380
381 for (i = 0; i < urb->number_of_packets; i++) {
382 status = urb->iso_frame_desc[i].status;
383
384 if (status < 0) {
385 print_err_status(dev, i, status);
386 continue;
387 }
388
389 len = urb->iso_frame_desc[i].actual_length;
390
391 if (len > 0) {
392 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
393 if (!urb->iso_frame_desc[i].status) {
394 if ((dev->fourcc) == V4L2_PIX_FMT_TM6000) {
395 rc = copy_multiplexed(p, len, urb);
396 if (rc <= 0)
397 return rc;
398 } else {
399 copy_streams(p, len, urb);
400 }
401 }
402 }
403 }
404 return rc;
405 }
406
407 /* ------------------------------------------------------------------
408 * URB control
409 * ------------------------------------------------------------------
410 */
411
412 /*
413 * IRQ callback, called by URB callback
414 */
tm6000_irq_callback(struct urb * urb)415 static void tm6000_irq_callback(struct urb *urb)
416 {
417 struct tm6000_dmaqueue *dma_q = urb->context;
418 struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
419 unsigned long flags;
420 int i;
421
422 switch (urb->status) {
423 case 0:
424 case -ETIMEDOUT:
425 break;
426
427 case -ECONNRESET:
428 case -ENOENT:
429 case -ESHUTDOWN:
430 return;
431
432 default:
433 tm6000_err("urb completion error %d.\n", urb->status);
434 break;
435 }
436
437 spin_lock_irqsave(&dev->slock, flags);
438 tm6000_isoc_copy(urb);
439 spin_unlock_irqrestore(&dev->slock, flags);
440
441 /* Reset urb buffers */
442 for (i = 0; i < urb->number_of_packets; i++) {
443 urb->iso_frame_desc[i].status = 0;
444 urb->iso_frame_desc[i].actual_length = 0;
445 }
446
447 urb->status = usb_submit_urb(urb, GFP_ATOMIC);
448 if (urb->status)
449 tm6000_err("urb resubmit failed (error=%i)\n",
450 urb->status);
451 }
452
453 /*
454 * Allocate URB buffers
455 */
tm6000_alloc_urb_buffers(struct tm6000_core * dev)456 static int tm6000_alloc_urb_buffers(struct tm6000_core *dev)
457 {
458 int num_bufs = TM6000_NUM_URB_BUF;
459 int i;
460
461 if (dev->urb_buffer)
462 return 0;
463
464 dev->urb_buffer = kmalloc_array(num_bufs, sizeof(*dev->urb_buffer),
465 GFP_KERNEL);
466 if (!dev->urb_buffer)
467 return -ENOMEM;
468
469 dev->urb_dma = kmalloc_array(num_bufs, sizeof(*dev->urb_dma),
470 GFP_KERNEL);
471 if (!dev->urb_dma)
472 return -ENOMEM;
473
474 for (i = 0; i < num_bufs; i++) {
475 dev->urb_buffer[i] = usb_alloc_coherent(
476 dev->udev, dev->urb_size,
477 GFP_KERNEL, &dev->urb_dma[i]);
478 if (!dev->urb_buffer[i]) {
479 tm6000_err("unable to allocate %i bytes for transfer buffer %i\n",
480 dev->urb_size, i);
481 return -ENOMEM;
482 }
483 memset(dev->urb_buffer[i], 0, dev->urb_size);
484 }
485
486 return 0;
487 }
488
489 /*
490 * Free URB buffers
491 */
tm6000_free_urb_buffers(struct tm6000_core * dev)492 static int tm6000_free_urb_buffers(struct tm6000_core *dev)
493 {
494 int i;
495
496 if (!dev->urb_buffer)
497 return 0;
498
499 for (i = 0; i < TM6000_NUM_URB_BUF; i++) {
500 if (dev->urb_buffer[i]) {
501 usb_free_coherent(dev->udev,
502 dev->urb_size,
503 dev->urb_buffer[i],
504 dev->urb_dma[i]);
505 dev->urb_buffer[i] = NULL;
506 }
507 }
508 kfree(dev->urb_buffer);
509 kfree(dev->urb_dma);
510 dev->urb_buffer = NULL;
511 dev->urb_dma = NULL;
512
513 return 0;
514 }
515
516 /*
517 * Stop and Deallocate URBs
518 */
tm6000_uninit_isoc(struct tm6000_core * dev)519 static void tm6000_uninit_isoc(struct tm6000_core *dev)
520 {
521 struct urb *urb;
522 int i;
523
524 dev->isoc_ctl.buf = NULL;
525 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
526 urb = dev->isoc_ctl.urb[i];
527 if (urb) {
528 usb_kill_urb(urb);
529 usb_unlink_urb(urb);
530 usb_free_urb(urb);
531 dev->isoc_ctl.urb[i] = NULL;
532 }
533 dev->isoc_ctl.transfer_buffer[i] = NULL;
534 }
535
536 if (!keep_urb)
537 tm6000_free_urb_buffers(dev);
538
539 kfree(dev->isoc_ctl.urb);
540 kfree(dev->isoc_ctl.transfer_buffer);
541
542 dev->isoc_ctl.urb = NULL;
543 dev->isoc_ctl.transfer_buffer = NULL;
544 dev->isoc_ctl.num_bufs = 0;
545 }
546
547 /*
548 * Assign URBs and start IRQ
549 */
tm6000_prepare_isoc(struct tm6000_core * dev)550 static int tm6000_prepare_isoc(struct tm6000_core *dev)
551 {
552 struct tm6000_dmaqueue *dma_q = &dev->vidq;
553 int i, j, sb_size, pipe, size, max_packets;
554 int num_bufs = TM6000_NUM_URB_BUF;
555 struct urb *urb;
556
557 /* De-allocates all pending stuff */
558 tm6000_uninit_isoc(dev);
559 /* Stop interrupt USB pipe */
560 tm6000_ir_int_stop(dev);
561
562 usb_set_interface(dev->udev,
563 dev->isoc_in.bInterfaceNumber,
564 dev->isoc_in.bAlternateSetting);
565
566 /* Start interrupt USB pipe */
567 tm6000_ir_int_start(dev);
568
569 pipe = usb_rcvisocpipe(dev->udev,
570 dev->isoc_in.endp->desc.bEndpointAddress &
571 USB_ENDPOINT_NUMBER_MASK);
572
573 size = usb_maxpacket(dev->udev, pipe);
574
575 if (size > dev->isoc_in.maxsize)
576 size = dev->isoc_in.maxsize;
577
578 dev->isoc_ctl.max_pkt_size = size;
579
580 max_packets = TM6000_MAX_ISO_PACKETS;
581 sb_size = max_packets * size;
582 dev->urb_size = sb_size;
583
584 dev->isoc_ctl.num_bufs = num_bufs;
585
586 dev->isoc_ctl.urb = kmalloc_array(num_bufs, sizeof(void *),
587 GFP_KERNEL);
588 if (!dev->isoc_ctl.urb)
589 return -ENOMEM;
590
591 dev->isoc_ctl.transfer_buffer = kmalloc_array(num_bufs,
592 sizeof(void *),
593 GFP_KERNEL);
594 if (!dev->isoc_ctl.transfer_buffer) {
595 kfree(dev->isoc_ctl.urb);
596 return -ENOMEM;
597 }
598
599 dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets (%d bytes) of %d bytes each to handle %u size\n",
600 max_packets, num_bufs, sb_size,
601 dev->isoc_in.maxsize, size);
602
603
604 if (tm6000_alloc_urb_buffers(dev) < 0) {
605 tm6000_err("cannot allocate memory for urb buffers\n");
606
607 /* call free, as some buffers might have been allocated */
608 tm6000_free_urb_buffers(dev);
609 kfree(dev->isoc_ctl.urb);
610 kfree(dev->isoc_ctl.transfer_buffer);
611 return -ENOMEM;
612 }
613
614 /* allocate urbs and transfer buffers */
615 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
616 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
617 if (!urb) {
618 tm6000_uninit_isoc(dev);
619 tm6000_free_urb_buffers(dev);
620 return -ENOMEM;
621 }
622 dev->isoc_ctl.urb[i] = urb;
623
624 urb->transfer_dma = dev->urb_dma[i];
625 dev->isoc_ctl.transfer_buffer[i] = dev->urb_buffer[i];
626
627 usb_fill_bulk_urb(urb, dev->udev, pipe,
628 dev->isoc_ctl.transfer_buffer[i], sb_size,
629 tm6000_irq_callback, dma_q);
630 urb->interval = dev->isoc_in.endp->desc.bInterval;
631 urb->number_of_packets = max_packets;
632 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
633
634 for (j = 0; j < max_packets; j++) {
635 urb->iso_frame_desc[j].offset = size * j;
636 urb->iso_frame_desc[j].length = size;
637 }
638 }
639
640 return 0;
641 }
642
tm6000_start_thread(struct tm6000_core * dev)643 static int tm6000_start_thread(struct tm6000_core *dev)
644 {
645 struct tm6000_dmaqueue *dma_q = &dev->vidq;
646 int i;
647
648 dma_q->frame = 0;
649 dma_q->ini_jiffies = jiffies;
650
651 init_waitqueue_head(&dma_q->wq);
652
653 /* submit urbs and enables IRQ */
654 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
655 int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
656 if (rc) {
657 tm6000_err("submit of urb %i failed (error=%i)\n", i,
658 rc);
659 tm6000_uninit_isoc(dev);
660 return rc;
661 }
662 }
663
664 return 0;
665 }
666
667 /* ------------------------------------------------------------------
668 * Videobuf operations
669 * ------------------------------------------------------------------
670 */
671
672 static int
buffer_setup(struct videobuf_queue * vq,unsigned int * count,unsigned int * size)673 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
674 {
675 struct tm6000_fh *fh = vq->priv_data;
676
677 *size = fh->fmt->depth * fh->width * fh->height >> 3;
678 if (0 == *count)
679 *count = TM6000_DEF_BUF;
680
681 if (*count < TM6000_MIN_BUF)
682 *count = TM6000_MIN_BUF;
683
684 while (*size * *count > vid_limit * 1024 * 1024)
685 (*count)--;
686
687 return 0;
688 }
689
free_buffer(struct videobuf_queue * vq,struct tm6000_buffer * buf)690 static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf)
691 {
692 struct tm6000_fh *fh = vq->priv_data;
693 struct tm6000_core *dev = fh->dev;
694 unsigned long flags;
695
696 /* We used to wait for the buffer to finish here, but this didn't work
697 because, as we were keeping the state as VIDEOBUF_QUEUED,
698 videobuf_queue_cancel marked it as finished for us.
699 (Also, it could wedge forever if the hardware was misconfigured.)
700
701 This should be safe; by the time we get here, the buffer isn't
702 queued anymore. If we ever start marking the buffers as
703 VIDEOBUF_ACTIVE, it won't be, though.
704 */
705 spin_lock_irqsave(&dev->slock, flags);
706 if (dev->isoc_ctl.buf == buf)
707 dev->isoc_ctl.buf = NULL;
708 spin_unlock_irqrestore(&dev->slock, flags);
709
710 videobuf_vmalloc_free(&buf->vb);
711 buf->vb.state = VIDEOBUF_NEEDS_INIT;
712 }
713
714 static int
buffer_prepare(struct videobuf_queue * vq,struct videobuf_buffer * vb,enum v4l2_field field)715 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
716 enum v4l2_field field)
717 {
718 struct tm6000_fh *fh = vq->priv_data;
719 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
720 struct tm6000_core *dev = fh->dev;
721 int rc = 0;
722
723 BUG_ON(NULL == fh->fmt);
724
725
726 /* FIXME: It assumes depth=2 */
727 /* The only currently supported format is 16 bits/pixel */
728 buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
729 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
730 return -EINVAL;
731
732 if (buf->fmt != fh->fmt ||
733 buf->vb.width != fh->width ||
734 buf->vb.height != fh->height ||
735 buf->vb.field != field) {
736 buf->fmt = fh->fmt;
737 buf->vb.width = fh->width;
738 buf->vb.height = fh->height;
739 buf->vb.field = field;
740 buf->vb.state = VIDEOBUF_NEEDS_INIT;
741 }
742
743 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
744 rc = videobuf_iolock(vq, &buf->vb, NULL);
745 if (rc != 0)
746 goto fail;
747 }
748
749 if (!dev->isoc_ctl.num_bufs) {
750 rc = tm6000_prepare_isoc(dev);
751 if (rc < 0)
752 goto fail;
753
754 rc = tm6000_start_thread(dev);
755 if (rc < 0)
756 goto fail;
757
758 }
759
760 buf->vb.state = VIDEOBUF_PREPARED;
761 return 0;
762
763 fail:
764 free_buffer(vq, buf);
765 return rc;
766 }
767
768 static void
buffer_queue(struct videobuf_queue * vq,struct videobuf_buffer * vb)769 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
770 {
771 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
772 struct tm6000_fh *fh = vq->priv_data;
773 struct tm6000_core *dev = fh->dev;
774 struct tm6000_dmaqueue *vidq = &dev->vidq;
775
776 buf->vb.state = VIDEOBUF_QUEUED;
777 list_add_tail(&buf->vb.queue, &vidq->active);
778 }
779
buffer_release(struct videobuf_queue * vq,struct videobuf_buffer * vb)780 static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
781 {
782 struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
783
784 free_buffer(vq, buf);
785 }
786
787 static const struct videobuf_queue_ops tm6000_video_qops = {
788 .buf_setup = buffer_setup,
789 .buf_prepare = buffer_prepare,
790 .buf_queue = buffer_queue,
791 .buf_release = buffer_release,
792 };
793
794 /* ------------------------------------------------------------------
795 * IOCTL handling
796 * ------------------------------------------------------------------
797 */
798
is_res_read(struct tm6000_core * dev,struct tm6000_fh * fh)799 static bool is_res_read(struct tm6000_core *dev, struct tm6000_fh *fh)
800 {
801 /* Is the current fh handling it? if so, that's OK */
802 if (dev->resources == fh && dev->is_res_read)
803 return true;
804
805 return false;
806 }
807
is_res_streaming(struct tm6000_core * dev,struct tm6000_fh * fh)808 static bool is_res_streaming(struct tm6000_core *dev, struct tm6000_fh *fh)
809 {
810 /* Is the current fh handling it? if so, that's OK */
811 if (dev->resources == fh)
812 return true;
813
814 return false;
815 }
816
res_get(struct tm6000_core * dev,struct tm6000_fh * fh,bool is_res_read)817 static bool res_get(struct tm6000_core *dev, struct tm6000_fh *fh,
818 bool is_res_read)
819 {
820 /* Is the current fh handling it? if so, that's OK */
821 if (dev->resources == fh && dev->is_res_read == is_res_read)
822 return true;
823
824 /* is it free? */
825 if (dev->resources)
826 return false;
827
828 /* grab it */
829 dev->resources = fh;
830 dev->is_res_read = is_res_read;
831 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
832 return true;
833 }
834
res_free(struct tm6000_core * dev,struct tm6000_fh * fh)835 static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
836 {
837 /* Is the current fh handling it? if so, that's OK */
838 if (dev->resources != fh)
839 return;
840
841 dev->resources = NULL;
842 dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
843 }
844
845 /* ------------------------------------------------------------------
846 * IOCTL vidioc handling
847 * ------------------------------------------------------------------
848 */
vidioc_querycap(struct file * file,void * priv,struct v4l2_capability * cap)849 static int vidioc_querycap(struct file *file, void *priv,
850 struct v4l2_capability *cap)
851 {
852 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
853
854 strscpy(cap->driver, "tm6000", sizeof(cap->driver));
855 strscpy(cap->card, "Trident TM5600/6000/6010", sizeof(cap->card));
856 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
857 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
858 V4L2_CAP_DEVICE_CAPS;
859 if (dev->tuner_type != TUNER_ABSENT)
860 cap->capabilities |= V4L2_CAP_TUNER;
861 if (dev->caps.has_radio)
862 cap->capabilities |= V4L2_CAP_RADIO;
863
864 return 0;
865 }
866
vidioc_enum_fmt_vid_cap(struct file * file,void * priv,struct v4l2_fmtdesc * f)867 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
868 struct v4l2_fmtdesc *f)
869 {
870 if (f->index >= ARRAY_SIZE(format))
871 return -EINVAL;
872
873 f->pixelformat = format[f->index].fourcc;
874 return 0;
875 }
876
vidioc_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)877 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
878 struct v4l2_format *f)
879 {
880 struct tm6000_fh *fh = priv;
881
882 f->fmt.pix.width = fh->width;
883 f->fmt.pix.height = fh->height;
884 f->fmt.pix.field = fh->vb_vidq.field;
885 f->fmt.pix.pixelformat = fh->fmt->fourcc;
886 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
887 f->fmt.pix.bytesperline =
888 (f->fmt.pix.width * fh->fmt->depth) >> 3;
889 f->fmt.pix.sizeimage =
890 f->fmt.pix.height * f->fmt.pix.bytesperline;
891
892 return 0;
893 }
894
format_by_fourcc(unsigned int fourcc)895 static struct tm6000_fmt *format_by_fourcc(unsigned int fourcc)
896 {
897 unsigned int i;
898
899 for (i = 0; i < ARRAY_SIZE(format); i++)
900 if (format[i].fourcc == fourcc)
901 return format+i;
902 return NULL;
903 }
904
vidioc_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)905 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
906 struct v4l2_format *f)
907 {
908 struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
909 struct tm6000_fmt *fmt;
910 enum v4l2_field field;
911
912 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
913 if (NULL == fmt) {
914 dprintk(dev, 2, "Fourcc format (0x%08x) invalid.\n",
915 f->fmt.pix.pixelformat);
916 return -EINVAL;
917 }
918
919 field = V4L2_FIELD_INTERLACED;
920
921 tm6000_get_std_res(dev);
922
923 f->fmt.pix.width = dev->width;
924 f->fmt.pix.height = dev->height;
925
926 f->fmt.pix.width &= ~0x01;
927
928 f->fmt.pix.field = field;
929
930 f->fmt.pix.bytesperline =
931 (f->fmt.pix.width * fmt->depth) >> 3;
932 f->fmt.pix.sizeimage =
933 f->fmt.pix.height * f->fmt.pix.bytesperline;
934 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
935
936 return 0;
937 }
938
939 /*FIXME: This seems to be generic enough to be at videodev2 */
vidioc_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)940 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
941 struct v4l2_format *f)
942 {
943 struct tm6000_fh *fh = priv;
944 struct tm6000_core *dev = fh->dev;
945 int ret = vidioc_try_fmt_vid_cap(file, fh, f);
946 if (ret < 0)
947 return ret;
948
949 fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
950 fh->width = f->fmt.pix.width;
951 fh->height = f->fmt.pix.height;
952 fh->vb_vidq.field = f->fmt.pix.field;
953 fh->type = f->type;
954
955 dev->fourcc = f->fmt.pix.pixelformat;
956
957 tm6000_set_fourcc_format(dev);
958
959 return 0;
960 }
961
vidioc_reqbufs(struct file * file,void * priv,struct v4l2_requestbuffers * p)962 static int vidioc_reqbufs(struct file *file, void *priv,
963 struct v4l2_requestbuffers *p)
964 {
965 struct tm6000_fh *fh = priv;
966
967 return videobuf_reqbufs(&fh->vb_vidq, p);
968 }
969
vidioc_querybuf(struct file * file,void * priv,struct v4l2_buffer * p)970 static int vidioc_querybuf(struct file *file, void *priv,
971 struct v4l2_buffer *p)
972 {
973 struct tm6000_fh *fh = priv;
974
975 return videobuf_querybuf(&fh->vb_vidq, p);
976 }
977
vidioc_qbuf(struct file * file,void * priv,struct v4l2_buffer * p)978 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
979 {
980 struct tm6000_fh *fh = priv;
981
982 return videobuf_qbuf(&fh->vb_vidq, p);
983 }
984
vidioc_dqbuf(struct file * file,void * priv,struct v4l2_buffer * p)985 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
986 {
987 struct tm6000_fh *fh = priv;
988
989 return videobuf_dqbuf(&fh->vb_vidq, p,
990 file->f_flags & O_NONBLOCK);
991 }
992
vidioc_streamon(struct file * file,void * priv,enum v4l2_buf_type i)993 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
994 {
995 struct tm6000_fh *fh = priv;
996 struct tm6000_core *dev = fh->dev;
997
998 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
999 return -EINVAL;
1000 if (i != fh->type)
1001 return -EINVAL;
1002
1003 if (!res_get(dev, fh, false))
1004 return -EBUSY;
1005 return videobuf_streamon(&fh->vb_vidq);
1006 }
1007
vidioc_streamoff(struct file * file,void * priv,enum v4l2_buf_type i)1008 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
1009 {
1010 struct tm6000_fh *fh = priv;
1011 struct tm6000_core *dev = fh->dev;
1012
1013 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1014 return -EINVAL;
1015
1016 if (i != fh->type)
1017 return -EINVAL;
1018
1019 videobuf_streamoff(&fh->vb_vidq);
1020 res_free(dev, fh);
1021
1022 return 0;
1023 }
1024
vidioc_s_std(struct file * file,void * priv,v4l2_std_id norm)1025 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1026 {
1027 int rc = 0;
1028 struct tm6000_fh *fh = priv;
1029 struct tm6000_core *dev = fh->dev;
1030
1031 dev->norm = norm;
1032 rc = tm6000_init_analog_mode(dev);
1033
1034 fh->width = dev->width;
1035 fh->height = dev->height;
1036
1037 if (rc < 0)
1038 return rc;
1039
1040 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->norm);
1041
1042 return 0;
1043 }
1044
vidioc_g_std(struct file * file,void * priv,v4l2_std_id * norm)1045 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1046 {
1047 struct tm6000_fh *fh = priv;
1048 struct tm6000_core *dev = fh->dev;
1049
1050 *norm = dev->norm;
1051 return 0;
1052 }
1053
1054 static const char *iname[] = {
1055 [TM6000_INPUT_TV] = "Television",
1056 [TM6000_INPUT_COMPOSITE1] = "Composite 1",
1057 [TM6000_INPUT_COMPOSITE2] = "Composite 2",
1058 [TM6000_INPUT_SVIDEO] = "S-Video",
1059 };
1060
vidioc_enum_input(struct file * file,void * priv,struct v4l2_input * i)1061 static int vidioc_enum_input(struct file *file, void *priv,
1062 struct v4l2_input *i)
1063 {
1064 struct tm6000_fh *fh = priv;
1065 struct tm6000_core *dev = fh->dev;
1066 unsigned int n;
1067
1068 n = i->index;
1069 if (n >= 3)
1070 return -EINVAL;
1071
1072 if (!dev->vinput[n].type)
1073 return -EINVAL;
1074
1075 i->index = n;
1076
1077 if (dev->vinput[n].type == TM6000_INPUT_TV)
1078 i->type = V4L2_INPUT_TYPE_TUNER;
1079 else
1080 i->type = V4L2_INPUT_TYPE_CAMERA;
1081
1082 strscpy(i->name, iname[dev->vinput[n].type], sizeof(i->name));
1083
1084 i->std = TM6000_STD;
1085
1086 return 0;
1087 }
1088
vidioc_g_input(struct file * file,void * priv,unsigned int * i)1089 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1090 {
1091 struct tm6000_fh *fh = priv;
1092 struct tm6000_core *dev = fh->dev;
1093
1094 *i = dev->input;
1095
1096 return 0;
1097 }
1098
vidioc_s_input(struct file * file,void * priv,unsigned int i)1099 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1100 {
1101 struct tm6000_fh *fh = priv;
1102 struct tm6000_core *dev = fh->dev;
1103 int rc = 0;
1104
1105 if (i >= 3)
1106 return -EINVAL;
1107 if (!dev->vinput[i].type)
1108 return -EINVAL;
1109
1110 dev->input = i;
1111
1112 rc = vidioc_s_std(file, priv, dev->norm);
1113
1114 return rc;
1115 }
1116
1117 /* --- controls ---------------------------------------------- */
1118
tm6000_s_ctrl(struct v4l2_ctrl * ctrl)1119 static int tm6000_s_ctrl(struct v4l2_ctrl *ctrl)
1120 {
1121 struct tm6000_core *dev = container_of(ctrl->handler, struct tm6000_core, ctrl_handler);
1122 u8 val = ctrl->val;
1123
1124 switch (ctrl->id) {
1125 case V4L2_CID_CONTRAST:
1126 tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val);
1127 return 0;
1128 case V4L2_CID_BRIGHTNESS:
1129 tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val);
1130 return 0;
1131 case V4L2_CID_SATURATION:
1132 tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val);
1133 return 0;
1134 case V4L2_CID_HUE:
1135 tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val);
1136 return 0;
1137 }
1138 return -EINVAL;
1139 }
1140
1141 static const struct v4l2_ctrl_ops tm6000_ctrl_ops = {
1142 .s_ctrl = tm6000_s_ctrl,
1143 };
1144
tm6000_radio_s_ctrl(struct v4l2_ctrl * ctrl)1145 static int tm6000_radio_s_ctrl(struct v4l2_ctrl *ctrl)
1146 {
1147 struct tm6000_core *dev = container_of(ctrl->handler,
1148 struct tm6000_core, radio_ctrl_handler);
1149 u8 val = ctrl->val;
1150
1151 switch (ctrl->id) {
1152 case V4L2_CID_AUDIO_MUTE:
1153 dev->ctl_mute = val;
1154 tm6000_tvaudio_set_mute(dev, val);
1155 return 0;
1156 case V4L2_CID_AUDIO_VOLUME:
1157 dev->ctl_volume = val;
1158 tm6000_set_volume(dev, val);
1159 return 0;
1160 }
1161 return -EINVAL;
1162 }
1163
1164 static const struct v4l2_ctrl_ops tm6000_radio_ctrl_ops = {
1165 .s_ctrl = tm6000_radio_s_ctrl,
1166 };
1167
vidioc_g_tuner(struct file * file,void * priv,struct v4l2_tuner * t)1168 static int vidioc_g_tuner(struct file *file, void *priv,
1169 struct v4l2_tuner *t)
1170 {
1171 struct tm6000_fh *fh = priv;
1172 struct tm6000_core *dev = fh->dev;
1173
1174 if (UNSET == dev->tuner_type)
1175 return -ENOTTY;
1176 if (0 != t->index)
1177 return -EINVAL;
1178
1179 strscpy(t->name, "Television", sizeof(t->name));
1180 t->type = V4L2_TUNER_ANALOG_TV;
1181 t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO;
1182 t->rangehigh = 0xffffffffUL;
1183 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1184
1185 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1186
1187 t->audmode = dev->amode;
1188
1189 return 0;
1190 }
1191
vidioc_s_tuner(struct file * file,void * priv,const struct v4l2_tuner * t)1192 static int vidioc_s_tuner(struct file *file, void *priv,
1193 const struct v4l2_tuner *t)
1194 {
1195 struct tm6000_fh *fh = priv;
1196 struct tm6000_core *dev = fh->dev;
1197
1198 if (UNSET == dev->tuner_type)
1199 return -ENOTTY;
1200 if (0 != t->index)
1201 return -EINVAL;
1202
1203 if (t->audmode > V4L2_TUNER_MODE_STEREO)
1204 dev->amode = V4L2_TUNER_MODE_STEREO;
1205 else
1206 dev->amode = t->audmode;
1207 dprintk(dev, 3, "audio mode: %x\n", t->audmode);
1208
1209 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1210
1211 return 0;
1212 }
1213
vidioc_g_frequency(struct file * file,void * priv,struct v4l2_frequency * f)1214 static int vidioc_g_frequency(struct file *file, void *priv,
1215 struct v4l2_frequency *f)
1216 {
1217 struct tm6000_fh *fh = priv;
1218 struct tm6000_core *dev = fh->dev;
1219
1220 if (UNSET == dev->tuner_type)
1221 return -ENOTTY;
1222 if (f->tuner)
1223 return -EINVAL;
1224
1225 f->frequency = dev->freq;
1226
1227 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
1228
1229 return 0;
1230 }
1231
vidioc_s_frequency(struct file * file,void * priv,const struct v4l2_frequency * f)1232 static int vidioc_s_frequency(struct file *file, void *priv,
1233 const struct v4l2_frequency *f)
1234 {
1235 struct tm6000_fh *fh = priv;
1236 struct tm6000_core *dev = fh->dev;
1237
1238 if (UNSET == dev->tuner_type)
1239 return -ENOTTY;
1240 if (f->tuner != 0)
1241 return -EINVAL;
1242
1243 dev->freq = f->frequency;
1244 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1245
1246 return 0;
1247 }
1248
radio_g_tuner(struct file * file,void * priv,struct v4l2_tuner * t)1249 static int radio_g_tuner(struct file *file, void *priv,
1250 struct v4l2_tuner *t)
1251 {
1252 struct tm6000_fh *fh = file->private_data;
1253 struct tm6000_core *dev = fh->dev;
1254
1255 if (0 != t->index)
1256 return -EINVAL;
1257
1258 memset(t, 0, sizeof(*t));
1259 strscpy(t->name, "Radio", sizeof(t->name));
1260 t->type = V4L2_TUNER_RADIO;
1261 t->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
1262 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1263 t->audmode = V4L2_TUNER_MODE_STEREO;
1264
1265 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1266
1267 return 0;
1268 }
1269
radio_s_tuner(struct file * file,void * priv,const struct v4l2_tuner * t)1270 static int radio_s_tuner(struct file *file, void *priv,
1271 const struct v4l2_tuner *t)
1272 {
1273 struct tm6000_fh *fh = file->private_data;
1274 struct tm6000_core *dev = fh->dev;
1275
1276 if (0 != t->index)
1277 return -EINVAL;
1278 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1279 return 0;
1280 }
1281
1282 /* ------------------------------------------------------------------
1283 File operations for the device
1284 ------------------------------------------------------------------*/
1285
__tm6000_open(struct file * file)1286 static int __tm6000_open(struct file *file)
1287 {
1288 struct video_device *vdev = video_devdata(file);
1289 struct tm6000_core *dev = video_drvdata(file);
1290 struct tm6000_fh *fh;
1291 enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1292 int rc;
1293 int radio = 0;
1294
1295 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
1296 video_device_node_name(vdev));
1297
1298 switch (vdev->vfl_type) {
1299 case VFL_TYPE_VIDEO:
1300 type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1301 break;
1302 case VFL_TYPE_VBI:
1303 type = V4L2_BUF_TYPE_VBI_CAPTURE;
1304 break;
1305 case VFL_TYPE_RADIO:
1306 radio = 1;
1307 break;
1308 default:
1309 return -EINVAL;
1310 }
1311
1312 /* If more than one user, mutex should be added */
1313 dev->users++;
1314
1315 dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
1316 video_device_node_name(vdev), v4l2_type_names[type],
1317 dev->users);
1318
1319 /* allocate + initialize per filehandle data */
1320 fh = kzalloc(sizeof(*fh), GFP_KERNEL);
1321 if (NULL == fh) {
1322 dev->users--;
1323 return -ENOMEM;
1324 }
1325
1326 v4l2_fh_init(&fh->fh, vdev);
1327 file->private_data = fh;
1328 fh->dev = dev;
1329 fh->radio = radio;
1330 dev->radio = radio;
1331 fh->type = type;
1332 dev->fourcc = format[0].fourcc;
1333
1334 fh->fmt = format_by_fourcc(dev->fourcc);
1335
1336 tm6000_get_std_res(dev);
1337
1338 fh->width = dev->width;
1339 fh->height = dev->height;
1340
1341 dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=%p, dev=%p, dev->vidq=%p\n",
1342 fh, dev, &dev->vidq);
1343 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty queued=%d\n",
1344 list_empty(&dev->vidq.queued));
1345 dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty active=%d\n",
1346 list_empty(&dev->vidq.active));
1347
1348 /* initialize hardware on analog mode */
1349 rc = tm6000_init_analog_mode(dev);
1350 if (rc < 0) {
1351 v4l2_fh_exit(&fh->fh);
1352 kfree(fh);
1353 return rc;
1354 }
1355
1356 dev->mode = TM6000_MODE_ANALOG;
1357
1358 if (!fh->radio) {
1359 videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
1360 NULL, &dev->slock,
1361 fh->type,
1362 V4L2_FIELD_INTERLACED,
1363 sizeof(struct tm6000_buffer), fh, &dev->lock);
1364 } else {
1365 dprintk(dev, V4L2_DEBUG_OPEN, "video_open: setting radio device\n");
1366 tm6000_set_audio_rinput(dev);
1367 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1368 tm6000_prepare_isoc(dev);
1369 tm6000_start_thread(dev);
1370 }
1371 v4l2_fh_add(&fh->fh);
1372
1373 return 0;
1374 }
1375
tm6000_open(struct file * file)1376 static int tm6000_open(struct file *file)
1377 {
1378 struct video_device *vdev = video_devdata(file);
1379 int res;
1380
1381 mutex_lock(vdev->lock);
1382 res = __tm6000_open(file);
1383 mutex_unlock(vdev->lock);
1384 return res;
1385 }
1386
1387 static ssize_t
tm6000_read(struct file * file,char __user * data,size_t count,loff_t * pos)1388 tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
1389 {
1390 struct tm6000_fh *fh = file->private_data;
1391 struct tm6000_core *dev = fh->dev;
1392
1393 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1394 int res;
1395
1396 if (!res_get(fh->dev, fh, true))
1397 return -EBUSY;
1398
1399 if (mutex_lock_interruptible(&dev->lock))
1400 return -ERESTARTSYS;
1401 res = videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
1402 file->f_flags & O_NONBLOCK);
1403 mutex_unlock(&dev->lock);
1404 return res;
1405 }
1406 return 0;
1407 }
1408
1409 static __poll_t
__tm6000_poll(struct file * file,struct poll_table_struct * wait)1410 __tm6000_poll(struct file *file, struct poll_table_struct *wait)
1411 {
1412 __poll_t req_events = poll_requested_events(wait);
1413 struct tm6000_fh *fh = file->private_data;
1414 struct tm6000_buffer *buf;
1415 __poll_t res = 0;
1416
1417 if (v4l2_event_pending(&fh->fh))
1418 res = EPOLLPRI;
1419 else if (req_events & EPOLLPRI)
1420 poll_wait(file, &fh->fh.wait, wait);
1421 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1422 return res | EPOLLERR;
1423
1424 if (!!is_res_streaming(fh->dev, fh))
1425 return res | EPOLLERR;
1426
1427 if (!is_res_read(fh->dev, fh)) {
1428 /* streaming capture */
1429 if (list_empty(&fh->vb_vidq.stream))
1430 return res | EPOLLERR;
1431 buf = list_entry(fh->vb_vidq.stream.next, struct tm6000_buffer, vb.stream);
1432 poll_wait(file, &buf->vb.done, wait);
1433 if (buf->vb.state == VIDEOBUF_DONE ||
1434 buf->vb.state == VIDEOBUF_ERROR)
1435 return res | EPOLLIN | EPOLLRDNORM;
1436 } else if (req_events & (EPOLLIN | EPOLLRDNORM)) {
1437 /* read() capture */
1438 return res | videobuf_poll_stream(file, &fh->vb_vidq, wait);
1439 }
1440 return res;
1441 }
1442
tm6000_poll(struct file * file,struct poll_table_struct * wait)1443 static __poll_t tm6000_poll(struct file *file, struct poll_table_struct *wait)
1444 {
1445 struct tm6000_fh *fh = file->private_data;
1446 struct tm6000_core *dev = fh->dev;
1447 __poll_t res;
1448
1449 mutex_lock(&dev->lock);
1450 res = __tm6000_poll(file, wait);
1451 mutex_unlock(&dev->lock);
1452 return res;
1453 }
1454
tm6000_release(struct file * file)1455 static int tm6000_release(struct file *file)
1456 {
1457 struct tm6000_fh *fh = file->private_data;
1458 struct tm6000_core *dev = fh->dev;
1459 struct video_device *vdev = video_devdata(file);
1460
1461 dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
1462 video_device_node_name(vdev), dev->users);
1463
1464 mutex_lock(&dev->lock);
1465 dev->users--;
1466
1467 res_free(dev, fh);
1468
1469 if (!dev->users) {
1470 tm6000_uninit_isoc(dev);
1471
1472 /* Stop interrupt USB pipe */
1473 tm6000_ir_int_stop(dev);
1474
1475 usb_reset_configuration(dev->udev);
1476
1477 if (dev->int_in.endp)
1478 usb_set_interface(dev->udev,
1479 dev->isoc_in.bInterfaceNumber, 2);
1480 else
1481 usb_set_interface(dev->udev,
1482 dev->isoc_in.bInterfaceNumber, 0);
1483
1484 /* Start interrupt USB pipe */
1485 tm6000_ir_int_start(dev);
1486
1487 if (!fh->radio)
1488 videobuf_mmap_free(&fh->vb_vidq);
1489 }
1490 v4l2_fh_del(&fh->fh);
1491 v4l2_fh_exit(&fh->fh);
1492 kfree(fh);
1493 mutex_unlock(&dev->lock);
1494
1495 return 0;
1496 }
1497
tm6000_mmap(struct file * file,struct vm_area_struct * vma)1498 static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
1499 {
1500 struct tm6000_fh *fh = file->private_data;
1501 struct tm6000_core *dev = fh->dev;
1502 int res;
1503
1504 if (mutex_lock_interruptible(&dev->lock))
1505 return -ERESTARTSYS;
1506 res = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1507 mutex_unlock(&dev->lock);
1508 return res;
1509 }
1510
1511 static const struct v4l2_file_operations tm6000_fops = {
1512 .owner = THIS_MODULE,
1513 .open = tm6000_open,
1514 .release = tm6000_release,
1515 .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
1516 .read = tm6000_read,
1517 .poll = tm6000_poll,
1518 .mmap = tm6000_mmap,
1519 };
1520
1521 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1522 .vidioc_querycap = vidioc_querycap,
1523 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1524 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1525 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1526 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1527 .vidioc_s_std = vidioc_s_std,
1528 .vidioc_g_std = vidioc_g_std,
1529 .vidioc_enum_input = vidioc_enum_input,
1530 .vidioc_g_input = vidioc_g_input,
1531 .vidioc_s_input = vidioc_s_input,
1532 .vidioc_g_tuner = vidioc_g_tuner,
1533 .vidioc_s_tuner = vidioc_s_tuner,
1534 .vidioc_g_frequency = vidioc_g_frequency,
1535 .vidioc_s_frequency = vidioc_s_frequency,
1536 .vidioc_streamon = vidioc_streamon,
1537 .vidioc_streamoff = vidioc_streamoff,
1538 .vidioc_reqbufs = vidioc_reqbufs,
1539 .vidioc_querybuf = vidioc_querybuf,
1540 .vidioc_qbuf = vidioc_qbuf,
1541 .vidioc_dqbuf = vidioc_dqbuf,
1542 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1543 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1544 };
1545
1546 static struct video_device tm6000_template = {
1547 .name = "tm6000",
1548 .fops = &tm6000_fops,
1549 .ioctl_ops = &video_ioctl_ops,
1550 .release = video_device_release_empty,
1551 .tvnorms = TM6000_STD,
1552 };
1553
1554 static const struct v4l2_file_operations radio_fops = {
1555 .owner = THIS_MODULE,
1556 .open = tm6000_open,
1557 .poll = v4l2_ctrl_poll,
1558 .release = tm6000_release,
1559 .unlocked_ioctl = video_ioctl2,
1560 };
1561
1562 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1563 .vidioc_querycap = vidioc_querycap,
1564 .vidioc_g_tuner = radio_g_tuner,
1565 .vidioc_s_tuner = radio_s_tuner,
1566 .vidioc_g_frequency = vidioc_g_frequency,
1567 .vidioc_s_frequency = vidioc_s_frequency,
1568 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1569 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1570 };
1571
1572 static struct video_device tm6000_radio_template = {
1573 .name = "tm6000",
1574 .fops = &radio_fops,
1575 .ioctl_ops = &radio_ioctl_ops,
1576 };
1577
1578 /* -----------------------------------------------------------------
1579 * Initialization and module stuff
1580 * ------------------------------------------------------------------
1581 */
1582
vdev_init(struct tm6000_core * dev,struct video_device * vfd,const struct video_device * template,const char * type_name)1583 static void vdev_init(struct tm6000_core *dev,
1584 struct video_device *vfd,
1585 const struct video_device
1586 *template, const char *type_name)
1587 {
1588 *vfd = *template;
1589 vfd->v4l2_dev = &dev->v4l2_dev;
1590 vfd->release = video_device_release_empty;
1591 vfd->lock = &dev->lock;
1592
1593 snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
1594
1595 video_set_drvdata(vfd, dev);
1596 }
1597
tm6000_v4l2_register(struct tm6000_core * dev)1598 int tm6000_v4l2_register(struct tm6000_core *dev)
1599 {
1600 int ret = 0;
1601
1602 v4l2_ctrl_handler_init(&dev->ctrl_handler, 6);
1603 v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 2);
1604 v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
1605 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
1606 v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
1607 V4L2_CID_AUDIO_VOLUME, -15, 15, 1, 0);
1608 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1609 V4L2_CID_BRIGHTNESS, 0, 255, 1, 54);
1610 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1611 V4L2_CID_CONTRAST, 0, 255, 1, 119);
1612 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1613 V4L2_CID_SATURATION, 0, 255, 1, 112);
1614 v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1615 V4L2_CID_HUE, -128, 127, 1, 0);
1616 v4l2_ctrl_add_handler(&dev->ctrl_handler,
1617 &dev->radio_ctrl_handler, NULL, false);
1618
1619 if (dev->radio_ctrl_handler.error)
1620 ret = dev->radio_ctrl_handler.error;
1621 if (!ret && dev->ctrl_handler.error)
1622 ret = dev->ctrl_handler.error;
1623 if (ret)
1624 goto free_ctrl;
1625
1626 vdev_init(dev, &dev->vfd, &tm6000_template, "video");
1627
1628 dev->vfd.ctrl_handler = &dev->ctrl_handler;
1629 dev->vfd.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
1630 V4L2_CAP_READWRITE;
1631 if (dev->tuner_type != TUNER_ABSENT)
1632 dev->vfd.device_caps |= V4L2_CAP_TUNER;
1633
1634 /* init video dma queues */
1635 INIT_LIST_HEAD(&dev->vidq.active);
1636 INIT_LIST_HEAD(&dev->vidq.queued);
1637
1638 ret = video_register_device(&dev->vfd, VFL_TYPE_VIDEO, video_nr);
1639
1640 if (ret < 0) {
1641 printk(KERN_INFO "%s: can't register video device\n",
1642 dev->name);
1643 goto free_ctrl;
1644 }
1645
1646 printk(KERN_INFO "%s: registered device %s\n",
1647 dev->name, video_device_node_name(&dev->vfd));
1648
1649 if (dev->caps.has_radio) {
1650 vdev_init(dev, &dev->radio_dev, &tm6000_radio_template,
1651 "radio");
1652 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
1653 dev->radio_dev.device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER;
1654 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
1655 radio_nr);
1656 if (ret < 0) {
1657 printk(KERN_INFO "%s: can't register radio device\n",
1658 dev->name);
1659 goto unreg_video;
1660 }
1661
1662 printk(KERN_INFO "%s: registered device %s\n",
1663 dev->name, video_device_node_name(&dev->radio_dev));
1664 }
1665
1666 printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
1667 return ret;
1668
1669 unreg_video:
1670 video_unregister_device(&dev->vfd);
1671 free_ctrl:
1672 v4l2_ctrl_handler_free(&dev->ctrl_handler);
1673 v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1674 return ret;
1675 }
1676
tm6000_v4l2_unregister(struct tm6000_core * dev)1677 int tm6000_v4l2_unregister(struct tm6000_core *dev)
1678 {
1679 video_unregister_device(&dev->vfd);
1680
1681 /* if URB buffers are still allocated free them now */
1682 tm6000_free_urb_buffers(dev);
1683
1684 video_unregister_device(&dev->radio_dev);
1685 return 0;
1686 }
1687
tm6000_v4l2_exit(void)1688 int tm6000_v4l2_exit(void)
1689 {
1690 return 0;
1691 }
1692
1693 module_param(video_nr, int, 0);
1694 MODULE_PARM_DESC(video_nr, "Allow changing video device number");
1695
1696 module_param_named(debug, tm6000_debug, int, 0444);
1697 MODULE_PARM_DESC(debug, "activates debug info");
1698
1699 module_param(vid_limit, int, 0644);
1700 MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
1701
1702 module_param(keep_urb, bool, 0);
1703 MODULE_PARM_DESC(keep_urb, "Keep urb buffers allocated even when the device is closed by the user");
1704