projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
V4L/DVB (13236): ir-kbd-i2c: Don't reject unknown I2C addresses
[deliverable/linux.git] / drivers / media / video / au0828 / au0828-video.c
CommitLineData
8b2f0795
DH		 1/*
2 * Auvitek AU0828 USB Bridge (Analog video support)
3 *
4 * Copyright (C) 2009 Devin Heitmueller <dheitmueller@linuxtv.org>
5 * Copyright (C) 2005-2008 Auvitek International, Ltd.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * As published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20 * 02110-1301, USA.
21 */
22
23/* Developer Notes:
24 *
25 * VBI support is not yet working
26 * The hardware scaler supported is unimplemented
27 * AC97 audio support is unimplemented (only i2s audio mode)
28 *
29 */
30
31#include <linux/module.h>
32#include <linux/init.h>
33#include <linux/device.h>
34#include <linux/suspend.h>
35#include <linux/version.h>
8b2f0795
DH		 36#include <media/v4l2-common.h>
37#include <media/v4l2-ioctl.h>
38#include <media/v4l2-chip-ident.h>
39#include <media/tuner.h>
40#include "au0828.h"
41#include "au0828-reg.h"
42
43static LIST_HEAD(au0828_devlist);
44static DEFINE_MUTEX(au0828_sysfs_lock);
45
46#define AU0828_VERSION_CODE KERNEL_VERSION(0, 0, 1)
47
8b2f0795
DH		 48/* ------------------------------------------------------------------
49 Videobuf operations
50 ------------------------------------------------------------------*/
51
52static unsigned int isoc_debug;
53module_param(isoc_debug, int, 0644);
54MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
55
56#define au0828_isocdbg(fmt, arg...) \
57do {\
58 if (isoc_debug) { \
59 printk(KERN_INFO "au0828 %s :"fmt, \
60 __func__ , ##arg); \
61 } \
62 } while (0)
63
64static inline void print_err_status(struct au0828_dev *dev,
65 int packet, int status)
66{
67 char *errmsg = "Unknown";
68
69 switch (status) {
70 case -ENOENT:
71 errmsg = "unlinked synchronuously";
72 break;
73 case -ECONNRESET:
74 errmsg = "unlinked asynchronuously";
75 break;
76 case -ENOSR:
77 errmsg = "Buffer error (overrun)";
78 break;
79 case -EPIPE:
80 errmsg = "Stalled (device not responding)";
81 break;
82 case -EOVERFLOW:
83 errmsg = "Babble (bad cable?)";
84 break;
85 case -EPROTO:
86 errmsg = "Bit-stuff error (bad cable?)";
87 break;
88 case -EILSEQ:
89 errmsg = "CRC/Timeout (could be anything)";
90 break;
91 case -ETIME:
92 errmsg = "Device does not respond";
93 break;
94 }
95 if (packet < 0) {
96 au0828_isocdbg("URB status %d [%s].\n", status, errmsg);
97 } else {
98 au0828_isocdbg("URB packet %d, status %d [%s].\n",
99 packet, status, errmsg);
100 }
101}
102
103static int check_dev(struct au0828_dev *dev)
104{
105 if (dev->dev_state & DEV_DISCONNECTED) {
62899a28 106 printk(KERN_INFO "v4l2 ioctl: device not present\n");
8b2f0795
DH		 107 return -ENODEV;
108 }
109
110 if (dev->dev_state & DEV_MISCONFIGURED) {
62899a28 111 printk(KERN_INFO "v4l2 ioctl: device is misconfigured; "
8b2f0795
DH		 112 "close and open it again\n");
113 return -EIO;
114 }
115 return 0;
116}
117
118/*
119 * IRQ callback, called by URB callback
120 */
121static void au0828_irq_callback(struct urb *urb)
122{
123 struct au0828_dmaqueue *dma_q = urb->context;
124 struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
125 int rc, i;
126
127 switch (urb->status) {
128 case 0: /* success */
129 case -ETIMEDOUT: /* NAK */
130 break;
131 case -ECONNRESET: /* kill */
132 case -ENOENT:
133 case -ESHUTDOWN:
134 au0828_isocdbg("au0828_irq_callback called: status kill\n");
135 return;
136 default: /* unknown error */
137 au0828_isocdbg("urb completition error %d.\n", urb->status);
138 break;
139 }
140
141 /* Copy data from URB */
142 spin_lock(&dev->slock);
143 rc = dev->isoc_ctl.isoc_copy(dev, urb);
144 spin_unlock(&dev->slock);
145
146 /* Reset urb buffers */
147 for (i = 0; i < urb->number_of_packets; i++) {
148 urb->iso_frame_desc[i].status = 0;
149 urb->iso_frame_desc[i].actual_length = 0;
150 }
151 urb->status = 0;
152
153 urb->status = usb_submit_urb(urb, GFP_ATOMIC);
154 if (urb->status) {
155 au0828_isocdbg("urb resubmit failed (error=%i)\n",
156 urb->status);
157 }
158}
159
160/*
161 * Stop and Deallocate URBs
162 */
163void au0828_uninit_isoc(struct au0828_dev *dev)
164{
165 struct urb *urb;
166 int i;
167
168 au0828_isocdbg("au0828: called au0828_uninit_isoc\n");
169
170 dev->isoc_ctl.nfields = -1;
171 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
172 urb = dev->isoc_ctl.urb[i];
173 if (urb) {
174 if (!irqs_disabled())
175 usb_kill_urb(urb);
176 else
177 usb_unlink_urb(urb);
178
179 if (dev->isoc_ctl.transfer_buffer[i]) {
180 usb_buffer_free(dev->usbdev,
181 urb->transfer_buffer_length,
182 dev->isoc_ctl.transfer_buffer[i],
183 urb->transfer_dma);
184 }
185 usb_free_urb(urb);
186 dev->isoc_ctl.urb[i] = NULL;
187 }
188 dev->isoc_ctl.transfer_buffer[i] = NULL;
189 }
190
191 kfree(dev->isoc_ctl.urb);
192 kfree(dev->isoc_ctl.transfer_buffer);
193
194 dev->isoc_ctl.urb = NULL;
195 dev->isoc_ctl.transfer_buffer = NULL;
196 dev->isoc_ctl.num_bufs = 0;
197}
198
199/*
200 * Allocate URBs and start IRQ
201 */
202int au0828_init_isoc(struct au0828_dev *dev, int max_packets,
203 int num_bufs, int max_pkt_size,
204 int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb))
205{
206 struct au0828_dmaqueue *dma_q = &dev->vidq;
207 int i;
208 int sb_size, pipe;
209 struct urb *urb;
210 int j, k;
211 int rc;
212
213 au0828_isocdbg("au0828: called au0828_prepare_isoc\n");
214
215 /* De-allocates all pending stuff */
216 au0828_uninit_isoc(dev);
217
218 dev->isoc_ctl.isoc_copy = isoc_copy;
219 dev->isoc_ctl.num_bufs = num_bufs;
220
221 dev->isoc_ctl.urb = kzalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
222 if (!dev->isoc_ctl.urb) {
223 au0828_isocdbg("cannot alloc memory for usb buffers\n");
224 return -ENOMEM;
225 }
226
227 dev->isoc_ctl.transfer_buffer = kzalloc(sizeof(void *)*num_bufs,
228 GFP_KERNEL);
229 if (!dev->isoc_ctl.transfer_buffer) {
230 au0828_isocdbg("cannot allocate memory for usb transfer\n");
231 kfree(dev->isoc_ctl.urb);
232 return -ENOMEM;
233 }
234
235 dev->isoc_ctl.max_pkt_size = max_pkt_size;
236 dev->isoc_ctl.buf = NULL;
237
238 sb_size = max_packets * dev->isoc_ctl.max_pkt_size;
239
240 /* allocate urbs and transfer buffers */
241 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
242 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
243 if (!urb) {
244 au0828_isocdbg("cannot alloc isoc_ctl.urb %i\n", i);
245 au0828_uninit_isoc(dev);
246 return -ENOMEM;
247 }
248 dev->isoc_ctl.urb[i] = urb;
249
250 dev->isoc_ctl.transfer_buffer[i] = usb_buffer_alloc(dev->usbdev,
251 sb_size, GFP_KERNEL, &urb->transfer_dma);
252 if (!dev->isoc_ctl.transfer_buffer[i]) {
253 printk("unable to allocate %i bytes for transfer"
254 " buffer %i%s\n",
255 sb_size, i,
256 in_interrupt() ? " while in int" : "");
257 au0828_uninit_isoc(dev);
258 return -ENOMEM;
259 }
260 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
261
262 pipe = usb_rcvisocpipe(dev->usbdev,
263 dev->isoc_in_endpointaddr),
264
265 usb_fill_int_urb(urb, dev->usbdev, pipe,
266 dev->isoc_ctl.transfer_buffer[i], sb_size,
267 au0828_irq_callback, dma_q, 1);
268
269 urb->number_of_packets = max_packets;
fadadb7d 270 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
8b2f0795
DH		 271
272 k = 0;
273 for (j = 0; j < max_packets; j++) {
274 urb->iso_frame_desc[j].offset = k;
275 urb->iso_frame_desc[j].length =
276 dev->isoc_ctl.max_pkt_size;
277 k += dev->isoc_ctl.max_pkt_size;
278 }
279 }
280
281 init_waitqueue_head(&dma_q->wq);
282
283 /* submit urbs and enables IRQ */
284 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
285 rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
286 if (rc) {
287 au0828_isocdbg("submit of urb %i failed (error=%i)\n",
288 i, rc);
289 au0828_uninit_isoc(dev);
290 return rc;
291 }
292 }
293
294 return 0;
295}
296
297/*
298 * Announces that a buffer were filled and request the next
299 */
300static inline void buffer_filled(struct au0828_dev *dev,
301 struct au0828_dmaqueue *dma_q,
302 struct au0828_buffer *buf)
303{
304 /* Advice that buffer was filled */
305 au0828_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
306
307 buf->vb.state = VIDEOBUF_DONE;
308 buf->vb.field_count++;
309 do_gettimeofday(&buf->vb.ts);
310
311 dev->isoc_ctl.buf = NULL;
312
313 list_del(&buf->vb.queue);
314 wake_up(&buf->vb.done);
315}
316
317/*
318 * Identify the buffer header type and properly handles
319 */
320static void au0828_copy_video(struct au0828_dev *dev,
321 struct au0828_dmaqueue *dma_q,
322 struct au0828_buffer *buf,
323 unsigned char *p,
324 unsigned char *outp, unsigned long len)
325{
326 void *fieldstart, *startwrite, *startread;
327 int linesdone, currlinedone, offset, lencopy, remain;
328 int bytesperline = dev->width << 1; /* Assumes 16-bit depth @@@@ */
329
330 if (dma_q->pos + len > buf->vb.size)
331 len = buf->vb.size - dma_q->pos;
332
333 startread = p;
334 remain = len;
335
336 /* Interlaces frame */
337 if (buf->top_field)
338 fieldstart = outp;
339 else
340 fieldstart = outp + bytesperline;
341
342 linesdone = dma_q->pos / bytesperline;
343 currlinedone = dma_q->pos % bytesperline;
344 offset = linesdone * bytesperline * 2 + currlinedone;
345 startwrite = fieldstart + offset;
346 lencopy = bytesperline - currlinedone;
347 lencopy = lencopy > remain ? remain : lencopy;
348
349 if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
350 au0828_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
351 ((char *)startwrite + lencopy) -
352 ((char *)outp + buf->vb.size));
353 remain = (char *)outp + buf->vb.size - (char *)startwrite;
354 lencopy = remain;
355 }
356 if (lencopy <= 0)
357 return;
358 memcpy(startwrite, startread, lencopy);
359
360 remain -= lencopy;
361
362 while (remain > 0) {
363 startwrite += lencopy + bytesperline;
364 startread += lencopy;
365 if (bytesperline > remain)
366 lencopy = remain;
367 else
368 lencopy = bytesperline;
369
370 if ((char *)startwrite + lencopy > (char *)outp +
371 buf->vb.size) {
62899a28 372 au0828_isocdbg("Overflow %zi bytes past buf end (2)\n",
8b2f0795
DH		 373 ((char *)startwrite + lencopy) -
374 ((char *)outp + buf->vb.size));
375 lencopy = remain = (char *)outp + buf->vb.size -
376 (char *)startwrite;
377 }
378 if (lencopy <= 0)
379 break;
380
381 memcpy(startwrite, startread, lencopy);
382
383 remain -= lencopy;
384 }
385
386 if (offset > 1440) {
387 /* We have enough data to check for greenscreen */
62899a28 388 if (outp[0] < 0x60 && outp[1440] < 0x60)
8b2f0795 389 dev->greenscreen_detected = 1;
8b2f0795
DH		 390 }
391
392 dma_q->pos += len;
393}
394
395/*
396 * video-buf generic routine to get the next available buffer
397 */
398static inline void get_next_buf(struct au0828_dmaqueue *dma_q,
399 struct au0828_buffer **buf)
400{
401 struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
402
403 if (list_empty(&dma_q->active)) {
404 au0828_isocdbg("No active queue to serve\n");
405 dev->isoc_ctl.buf = NULL;
406 *buf = NULL;
407 return;
408 }
409
410 /* Get the next buffer */
411 *buf = list_entry(dma_q->active.next, struct au0828_buffer, vb.queue);
412 dev->isoc_ctl.buf = *buf;
413
414 return;
415}
416
417/*
418 * Controls the isoc copy of each urb packet
419 */
420static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb)
421{
422 struct au0828_buffer *buf;
423 struct au0828_dmaqueue *dma_q = urb->context;
424 unsigned char *outp = NULL;
425 int i, len = 0, rc = 1;
426 unsigned char *p;
427 unsigned char fbyte;
428
429 if (!dev)
430 return 0;
431
432 if ((dev->dev_state & DEV_DISCONNECTED) ||
433 (dev->dev_state & DEV_MISCONFIGURED))
434 return 0;
435
436 if (urb->status < 0) {
437 print_err_status(dev, -1, urb->status);
438 if (urb->status == -ENOENT)
439 return 0;
440 }
441
442 buf = dev->isoc_ctl.buf;
443 if (buf != NULL)
444 outp = videobuf_to_vmalloc(&buf->vb);
445
446 for (i = 0; i < urb->number_of_packets; i++) {
447 int status = urb->iso_frame_desc[i].status;
448
449 if (status < 0) {
450 print_err_status(dev, i, status);
451 if (urb->iso_frame_desc[i].status != -EPROTO)
452 continue;
453 }
454
62899a28 455 if (urb->iso_frame_desc[i].actual_length <= 0)
8b2f0795 456 continue;
62899a28 457
8b2f0795
DH		 458 if (urb->iso_frame_desc[i].actual_length >
459 dev->max_pkt_size) {
460 au0828_isocdbg("packet bigger than packet size");
461 continue;
462 }
463
464 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
465 fbyte = p[0];
466 len = urb->iso_frame_desc[i].actual_length - 4;
467 p += 4;
468
469 if (fbyte & 0x80) {
470 len -= 4;
471 p += 4;
472 au0828_isocdbg("Video frame %s\n",
473 (fbyte & 0x40) ? "odd" : "even");
474 if (!(fbyte & 0x40)) {
475 if (buf != NULL)
476 buffer_filled(dev, dma_q, buf);
477 get_next_buf(dma_q, &buf);
62899a28 478 if (buf == NULL)
8b2f0795 479 outp = NULL;
62899a28 480 else
8b2f0795
DH		 481 outp = videobuf_to_vmalloc(&buf->vb);
482 }
483
484 if (buf != NULL) {
62899a28 485 if (fbyte & 0x40)
8b2f0795 486 buf->top_field = 1;
62899a28 487 else
8b2f0795 488 buf->top_field = 0;
8b2f0795
DH		 489 }
490
491 dma_q->pos = 0;
492 }
62899a28 493 if (buf != NULL)
8b2f0795 494 au0828_copy_video(dev, dma_q, buf, p, outp, len);
8b2f0795
DH		 495 }
496 return rc;
497}
498
499static int
500buffer_setup(struct videobuf_queue *vq, unsigned int *count,
501 unsigned int *size)
502{
503 struct au0828_fh *fh = vq->priv_data;
504 *size = (fh->dev->width * fh->dev->height * 16 + 7) >> 3;
505
506 if (0 == *count)
507 *count = AU0828_DEF_BUF;
508
509 if (*count < AU0828_MIN_BUF)
510 *count = AU0828_MIN_BUF;
511 return 0;
512}
513
514/* This is called *without* dev->slock held; please keep it that way */
515static void free_buffer(struct videobuf_queue *vq, struct au0828_buffer *buf)
516{
517 struct au0828_fh *fh = vq->priv_data;
518 struct au0828_dev *dev = fh->dev;
519 unsigned long flags = 0;
520 if (in_interrupt())
521 BUG();
522
523 /* We used to wait for the buffer to finish here, but this didn't work
524 because, as we were keeping the state as VIDEOBUF_QUEUED,
525 videobuf_queue_cancel marked it as finished for us.
526 (Also, it could wedge forever if the hardware was misconfigured.)
527
528 This should be safe; by the time we get here, the buffer isn't
529 queued anymore. If we ever start marking the buffers as
530 VIDEOBUF_ACTIVE, it won't be, though.
531 */
532 spin_lock_irqsave(&dev->slock, flags);
533 if (dev->isoc_ctl.buf == buf)
534 dev->isoc_ctl.buf = NULL;
535 spin_unlock_irqrestore(&dev->slock, flags);
536
537 videobuf_vmalloc_free(&buf->vb);
538 buf->vb.state = VIDEOBUF_NEEDS_INIT;
539}
540
541static int
542buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
543 enum v4l2_field field)
544{
545 struct au0828_fh *fh = vq->priv_data;
546 struct au0828_buffer *buf = container_of(vb, struct au0828_buffer, vb);
547 struct au0828_dev *dev = fh->dev;
548 int rc = 0, urb_init = 0;
549
550 buf->vb.size = (fh->dev->width * fh->dev->height * 16 + 7) >> 3;
551
552 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
553 return -EINVAL;
554
555 buf->vb.width = dev->width;
556 buf->vb.height = dev->height;
557 buf->vb.field = field;
558
559 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
560 rc = videobuf_iolock(vq, &buf->vb, NULL);
561 if (rc < 0) {
62899a28 562 printk(KERN_INFO "videobuf_iolock failed\n");
8b2f0795
DH		 563 goto fail;
564 }
565 }
566
567 if (!dev->isoc_ctl.num_bufs)
568 urb_init = 1;
569
570 if (urb_init) {
571 rc = au0828_init_isoc(dev, AU0828_ISO_PACKETS_PER_URB,
572 AU0828_MAX_ISO_BUFS, dev->max_pkt_size,
573 au0828_isoc_copy);
574 if (rc < 0) {
62899a28 575 printk(KERN_INFO "au0828_init_isoc failed\n");
8b2f0795
DH		 576 goto fail;
577 }
578 }
579
580 buf->vb.state = VIDEOBUF_PREPARED;
581 return 0;
582
583fail:
584 free_buffer(vq, buf);
585 return rc;
586}
587
588static void
589buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
590{
591 struct au0828_buffer *buf = container_of(vb,
592 struct au0828_buffer,
593 vb);
594 struct au0828_fh *fh = vq->priv_data;
595 struct au0828_dev *dev = fh->dev;
596 struct au0828_dmaqueue *vidq = &dev->vidq;
597
598 buf->vb.state = VIDEOBUF_QUEUED;
599 list_add_tail(&buf->vb.queue, &vidq->active);
600}
601
602static void buffer_release(struct videobuf_queue *vq,
603 struct videobuf_buffer *vb)
604{
605 struct au0828_buffer *buf = container_of(vb,
606 struct au0828_buffer,
607 vb);
608
609 free_buffer(vq, buf);
610}
611
612static struct videobuf_queue_ops au0828_video_qops = {
613 .buf_setup = buffer_setup,
614 .buf_prepare = buffer_prepare,
615 .buf_queue = buffer_queue,
616 .buf_release = buffer_release,
617};
618
619/* ------------------------------------------------------------------
620 V4L2 interface
621 ------------------------------------------------------------------*/
622
623static int au0828_i2s_init(struct au0828_dev *dev)
624{
625 /* Enable i2s mode */
626 au0828_writereg(dev, AU0828_AUDIOCTRL_50C, 0x01);
627 return 0;
628}
629
630/*
631 * Auvitek au0828 analog stream enable
632 * Please set interface0 to AS5 before enable the stream
633 */
634int au0828_analog_stream_enable(struct au0828_dev *d)
635{
636 dprintk(1, "au0828_analog_stream_enable called\n");
637 au0828_writereg(d, AU0828_SENSORCTRL_VBI_103, 0x00);
638 au0828_writereg(d, 0x106, 0x00);
639 /* set x position */
640 au0828_writereg(d, 0x110, 0x00);
641 au0828_writereg(d, 0x111, 0x00);
642 au0828_writereg(d, 0x114, 0xa0);
643 au0828_writereg(d, 0x115, 0x05);
644 /* set y position */
645 au0828_writereg(d, 0x112, 0x02);
646 au0828_writereg(d, 0x113, 0x00);
647 au0828_writereg(d, 0x116, 0xf2);
648 au0828_writereg(d, 0x117, 0x00);
649 au0828_writereg(d, AU0828_SENSORCTRL_100, 0xb3);
650
651 return 0;
652}
653
654int au0828_analog_stream_disable(struct au0828_dev *d)
655{
656 dprintk(1, "au0828_analog_stream_disable called\n");
657 au0828_writereg(d, AU0828_SENSORCTRL_100, 0x0);
658 return 0;
659}
660
661void au0828_analog_stream_reset(struct au0828_dev *dev)
662{
663 dprintk(1, "au0828_analog_stream_reset called\n");
664 au0828_writereg(dev, AU0828_SENSORCTRL_100, 0x0);
665 mdelay(30);
666 au0828_writereg(dev, AU0828_SENSORCTRL_100, 0xb3);
667}
668
669/*
670 * Some operations needs to stop current streaming
671 */
672static int au0828_stream_interrupt(struct au0828_dev *dev)
673{
674 int ret = 0;
675
676 dev->stream_state = STREAM_INTERRUPT;
62899a28 677 if (dev->dev_state == DEV_DISCONNECTED)
8b2f0795 678 return -ENODEV;
62899a28 679 else if (ret) {
8b2f0795 680 dev->dev_state = DEV_MISCONFIGURED;
62899a28 681 dprintk(1, "%s device is misconfigured!\n", __func__);
8b2f0795
DH		 682 return ret;
683 }
684 return 0;
685}
686
687/*
688 * au0828_release_resources
689 * unregister v4l2 devices
690 */
691void au0828_analog_unregister(struct au0828_dev *dev)
692{
693 dprintk(1, "au0828_release_resources called\n");
694 mutex_lock(&au0828_sysfs_lock);
695
2eaf3960
DH		 696 if (dev->vdev) {
697 list_del(&dev->au0828list);
5a5a4e16 698 video_unregister_device(dev->vdev);
2eaf3960 699 }
5a5a4e16
DH		 700 if (dev->vbi_dev)
701 video_unregister_device(dev->vbi_dev);
8b2f0795
DH		 702
703 mutex_unlock(&au0828_sysfs_lock);
704}
705
706
707/* Usage lock check functions */
708static int res_get(struct au0828_fh *fh)
709{
710 struct au0828_dev *dev = fh->dev;
711 int rc = 0;
712
713 /* This instance already has stream_on */
714 if (fh->stream_on)
715 return rc;
716
717 if (dev->stream_on)
718 return -EBUSY;
719
720 dev->stream_on = 1;
721 fh->stream_on = 1;
722 return rc;
723}
724
725static int res_check(struct au0828_fh *fh)
726{
727 return fh->stream_on;
728}
729
730static void res_free(struct au0828_fh *fh)
731{
732 struct au0828_dev *dev = fh->dev;
733
734 fh->stream_on = 0;
735 dev->stream_on = 0;
736}
737
738static int au0828_v4l2_open(struct file *filp)
739{
740 int minor = video_devdata(filp)->minor;
741 int ret = 0;
742 struct au0828_dev *h, *dev = NULL;
743 struct au0828_fh *fh;
744 int type = 0;
745 struct list_head *list;
746
747 list_for_each(list, &au0828_devlist) {
748 h = list_entry(list, struct au0828_dev, au0828list);
62899a28 749 if (h->vdev->minor == minor) {
8b2f0795
DH		 750 dev = h;
751 type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
752 }
dd27ade7 753#ifdef VBI_IS_WORKING
62899a28 754 if (h->vbi_dev->minor == minor) {
8b2f0795
DH		 755 dev = h;
756 type = V4L2_BUF_TYPE_VBI_CAPTURE;
757 }
5a5a4e16 758#endif
8b2f0795
DH		 759 }
760
62899a28 761 if (NULL == dev)
8b2f0795
DH		 762 return -ENODEV;
763
764 fh = kzalloc(sizeof(struct au0828_fh), GFP_KERNEL);
62899a28 765 if (NULL == fh) {
8b2f0795
DH		 766 dprintk(1, "Failed allocate au0828_fh struct!\n");
767 return -ENOMEM;
768 }
769
770 fh->type = type;
771 fh->dev = dev;
772 filp->private_data = fh;
773
62899a28 774 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
8b2f0795
DH		 775 /* set au0828 interface0 to AS5 here again */
776 ret = usb_set_interface(dev->usbdev, 0, 5);
62899a28
DH		 777 if (ret < 0) {
778 printk(KERN_INFO "Au0828 can't set alternate to 5!\n");
8b2f0795
DH		 779 return -EBUSY;
780 }
781 dev->width = NTSC_STD_W;
782 dev->height = NTSC_STD_H;
783 dev->frame_size = dev->width * dev->height * 2;
784 dev->field_size = dev->width * dev->height;
785 dev->bytesperline = dev->width * 2;
786
787 au0828_analog_stream_enable(dev);
788 au0828_analog_stream_reset(dev);
789
790 /* If we were doing ac97 instead of i2s, it would go here...*/
791 au0828_i2s_init(dev);
792
793 dev->stream_state = STREAM_OFF;
794 dev->dev_state |= DEV_INITIALIZED;
795 }
796
797 dev->users++;
798
799 videobuf_queue_vmalloc_init(&fh->vb_vidq, &au0828_video_qops,
800 NULL, &dev->slock, fh->type,
801 V4L2_FIELD_INTERLACED,
802 sizeof(struct au0828_buffer), fh);
803
804 return ret;
805}
806
807static int au0828_v4l2_close(struct file *filp)
808{
809 int ret;
810 struct au0828_fh *fh = filp->private_data;
811 struct au0828_dev *dev = fh->dev;
812
813 mutex_lock(&dev->lock);
814 if (res_check(fh))
815 res_free(fh);
816
62899a28 817 if (dev->users == 1) {
8b2f0795
DH		 818 videobuf_stop(&fh->vb_vidq);
819 videobuf_mmap_free(&fh->vb_vidq);
820
62899a28 821 if (dev->dev_state & DEV_DISCONNECTED) {
8b2f0795
DH		 822 au0828_analog_unregister(dev);
823 mutex_unlock(&dev->lock);
824 kfree(dev);
825 return 0;
826 }
827
828 au0828_analog_stream_disable(dev);
829
830 au0828_uninit_isoc(dev);
831
e4b8bc52
DH		 832 /* Save some power by putting tuner to sleep */
833 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_standby);
834
8b2f0795
DH		 835 /* When close the device, set the usb intf0 into alt0 to free
836 USB bandwidth */
837 ret = usb_set_interface(dev->usbdev, 0, 0);
62899a28
DH		 838 if (ret < 0)
839 printk(KERN_INFO "Au0828 can't set alternate to 0!\n");
8b2f0795
DH		 840 }
841
842 kfree(fh);
843 dev->users--;
844 wake_up_interruptible_nr(&dev->open, 1);
845 mutex_unlock(&dev->lock);
846 return 0;
847}
848
849static ssize_t au0828_v4l2_read(struct file *filp, char __user *buf,
850 size_t count, loff_t *pos)
851{
852 struct au0828_fh *fh = filp->private_data;
853 struct au0828_dev *dev = fh->dev;
854 int rc;
855
856 rc = check_dev(dev);
857 if (rc < 0)
858 return rc;
859
62899a28 860 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
8b2f0795
DH		 861 mutex_lock(&dev->lock);
862 rc = res_get(fh);
863 mutex_unlock(&dev->lock);
864
865 if (unlikely(rc < 0))
866 return rc;
867
868 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
869 filp->f_flags & O_NONBLOCK);
870 }
871 return 0;
872}
873
874static unsigned int au0828_v4l2_poll(struct file *filp, poll_table *wait)
875{
876 struct au0828_fh *fh = filp->private_data;
877 struct au0828_dev *dev = fh->dev;
878 int rc;
879
880 rc = check_dev(dev);
881 if (rc < 0)
882 return rc;
883
884 mutex_lock(&dev->lock);
885 rc = res_get(fh);
886 mutex_unlock(&dev->lock);
887
888 if (unlikely(rc < 0))
889 return POLLERR;
890
891 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
892 return POLLERR;
893
894 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
895}
896
897static int au0828_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
898{
899 struct au0828_fh *fh = filp->private_data;
900 struct au0828_dev *dev = fh->dev;
901 int rc;
902
903 rc = check_dev(dev);
904 if (rc < 0)
905 return rc;
906
907 mutex_lock(&dev->lock);
908 rc = res_get(fh);
909 mutex_unlock(&dev->lock);
910
911 if (unlikely(rc < 0))
912 return rc;
913
914 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
915
8b2f0795
DH		 916 return rc;
917}
918
919static int au0828_set_format(struct au0828_dev *dev, unsigned int cmd,
920 struct v4l2_format *format)
921{
922 int ret;
923 int width = format->fmt.pix.width;
924 int height = format->fmt.pix.height;
925 unsigned int maxwidth, maxheight;
926
927 maxwidth = 720;
928 maxheight = 480;
929
dd27ade7 930#ifdef VBI_IS_WORKING
62899a28 931 if (format->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) {
8b2f0795
DH		 932 dprintk(1, "VBI format set: to be supported!\n");
933 return 0;
934 }
62899a28 935 if (format->type == V4L2_BUF_TYPE_VBI_CAPTURE)
8b2f0795 936 return 0;
5a5a4e16 937#endif
62899a28 938 if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
8b2f0795 939 return -EINVAL;
8b2f0795
DH		 940
941 /* If they are demanding a format other than the one we support,
942 bail out (tvtime asks for UYVY and then retries with YUYV) */
62899a28 943 if (format->fmt.pix.pixelformat != V4L2_PIX_FMT_UYVY)
8b2f0795 944 return -EINVAL;
8b2f0795
DH		 945
946 /* format->fmt.pix.width only support 720 and height 480 */
62899a28 947 if (width != 720)
8b2f0795 948 width = 720;
62899a28 949 if (height != 480)
8b2f0795
DH		 950 height = 480;
951
952 format->fmt.pix.width = width;
953 format->fmt.pix.height = height;
954 format->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
955 format->fmt.pix.bytesperline = width * 2;
956 format->fmt.pix.sizeimage = width * height * 2;
957 format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
958 format->fmt.pix.field = V4L2_FIELD_INTERLACED;
959
62899a28 960 if (cmd == VIDIOC_TRY_FMT)
8b2f0795
DH		 961 return 0;
962
963 /* maybe set new image format, driver current only support 720*480 */
964 dev->width = width;
965 dev->height = height;
966 dev->frame_size = width * height * 2;
967 dev->field_size = width * height;
968 dev->bytesperline = width * 2;
969
62899a28 970 if (dev->stream_state == STREAM_ON) {
8b2f0795 971 dprintk(1, "VIDIOC_SET_FMT: interrupting stream!\n");
62899a28
DH		 972 ret = au0828_stream_interrupt(dev);
973 if (ret != 0) {
8b2f0795
DH		 974 dprintk(1, "error interrupting video stream!\n");
975 return ret;
976 }
977 }
978
979 /* set au0828 interface0 to AS5 here again */
980 ret = usb_set_interface(dev->usbdev, 0, 5);
62899a28
DH		 981 if (ret < 0) {
982 printk(KERN_INFO "Au0828 can't set alt setting to 5!\n");
8b2f0795
DH		 983 return -EBUSY;
984 }
985
986 au0828_analog_stream_enable(dev);
987
988 return 0;
989}
990
991
992static int vidioc_queryctrl(struct file *file, void *priv,
993 struct v4l2_queryctrl *qc)
994{
995 struct au0828_fh *fh = priv;
996 struct au0828_dev *dev = fh->dev;
2689d3dc 997 v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
8b2f0795
DH		 998 if (qc->type)
999 return 0;
1000 else
1001 return -EINVAL;
1002}
1003
1004static int vidioc_querycap(struct file *file, void *priv,
1005 struct v4l2_capability *cap)
1006{
1007 struct au0828_fh *fh = priv;
1008 struct au0828_dev *dev = fh->dev;
1009
8b2f0795 1010 strlcpy(cap->driver, "au0828", sizeof(cap->driver));
f1add5b5 1011 strlcpy(cap->card, dev->board.name, sizeof(cap->card));
b14667f3 1012 strlcpy(cap->bus_info, dev->v4l2_dev.name, sizeof(cap->bus_info));
8b2f0795
DH		 1013
1014 cap->version = AU0828_VERSION_CODE;
1015
1016 /*set the device capabilities */
5a5a4e16 1017 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
dd27ade7 1018#ifdef VBI_IS_WORKING
5a5a4e16
DH		 1019 V4L2_CAP_VBI_CAPTURE |
1020#endif
8b2f0795
DH		 1021 V4L2_CAP_AUDIO |
1022 V4L2_CAP_READWRITE |
1023 V4L2_CAP_STREAMING |
1024 V4L2_CAP_TUNER;
1025 return 0;
1026}
1027
1028static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1029 struct v4l2_fmtdesc *f)
1030{
62899a28 1031 if (f->index)
8b2f0795
DH		 1032 return -EINVAL;
1033
8b2f0795
DH		 1034 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1035 strcpy(f->description, "Packed YUV2");
1036
1037 f->flags = 0;
1038 f->pixelformat = V4L2_PIX_FMT_UYVY;
1039
8b2f0795
DH		 1040 return 0;
1041}
1042
1043static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1044 struct v4l2_format *f)
1045{
1046 struct au0828_fh *fh = priv;
1047 struct au0828_dev *dev = fh->dev;
1048
1049 f->fmt.pix.width = dev->width;
1050 f->fmt.pix.height = dev->height;
1051 f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1052 f->fmt.pix.bytesperline = dev->bytesperline;
1053 f->fmt.pix.sizeimage = dev->frame_size;
1054 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; /* NTSC/PAL */
1055 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1056 return 0;
1057}
1058
1059static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1060 struct v4l2_format *f)
1061{
1062 struct au0828_fh *fh = priv;
1063 struct au0828_dev *dev = fh->dev;
1064
1065 return au0828_set_format(dev, VIDIOC_TRY_FMT, f);
1066}
1067
1068static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1069 struct v4l2_format *f)
1070{
1071 struct au0828_fh *fh = priv;
1072 struct au0828_dev *dev = fh->dev;
1073 int rc;
1074
1075 if (videobuf_queue_is_busy(&fh->vb_vidq)) {
62899a28 1076 printk(KERN_INFO "%s queue busy\n", __func__);
8b2f0795
DH		 1077 rc = -EBUSY;
1078 goto out;
1079 }
1080
1081 if (dev->stream_on && !fh->stream_on) {
62899a28 1082 printk(KERN_INFO "%s device in use by another fh\n", __func__);
8b2f0795
DH		 1083 rc = -EBUSY;
1084 goto out;
1085 }
1086
1087 return au0828_set_format(dev, VIDIOC_S_FMT, f);
1088out:
1089 return rc;
1090}
1091
1092static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id * norm)
1093{
1094 struct au0828_fh *fh = priv;
1095 struct au0828_dev *dev = fh->dev;
1096
1097 /* FIXME: when we support something other than NTSC, we are going to
1098 have to make the au0828 bridge adjust the size of its capture
1099 buffer, which is currently hardcoded at 720x480 */
1100
f41737ec 1101 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, *norm);
8b2f0795
DH		 1102 return 0;
1103}
1104
1105static int vidioc_enum_input(struct file *file, void *priv,
1106 struct v4l2_input *input)
1107{
1108 struct au0828_fh *fh = priv;
1109 struct au0828_dev *dev = fh->dev;
1110 unsigned int tmp;
1111
1112 static const char *inames[] = {
3d62287e 1113 [AU0828_VMUX_UNDEFINED] = "Undefined",
8b2f0795
DH		 1114 [AU0828_VMUX_COMPOSITE] = "Composite",
1115 [AU0828_VMUX_SVIDEO] = "S-Video",
1116 [AU0828_VMUX_CABLE] = "Cable TV",
1117 [AU0828_VMUX_TELEVISION] = "Television",
1118 [AU0828_VMUX_DVB] = "DVB",
1119 [AU0828_VMUX_DEBUG] = "tv debug"
1120 };
1121
1122 tmp = input->index;
1123
62899a28 1124 if (tmp > AU0828_MAX_INPUT)
8b2f0795 1125 return -EINVAL;
62899a28 1126 if (AUVI_INPUT(tmp).type == 0)
8b2f0795
DH		 1127 return -EINVAL;
1128
8b2f0795 1129 input->index = tmp;
f1add5b5 1130 strcpy(input->name, inames[AUVI_INPUT(tmp).type]);
62899a28
DH		 1131 if ((AUVI_INPUT(tmp).type == AU0828_VMUX_TELEVISION) ||
1132 (AUVI_INPUT(tmp).type == AU0828_VMUX_CABLE))
8b2f0795
DH		 1133 input->type |= V4L2_INPUT_TYPE_TUNER;
1134 else
1135 input->type |= V4L2_INPUT_TYPE_CAMERA;
1136
1137 input->std = dev->vdev->tvnorms;
1138
1139 return 0;
1140}
1141
1142static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1143{
1144 struct au0828_fh *fh = priv;
1145 struct au0828_dev *dev = fh->dev;
1146 *i = dev->ctrl_input;
1147 return 0;
1148}
1149
1150static int vidioc_s_input(struct file *file, void *priv, unsigned int index)
1151{
1152 struct au0828_fh *fh = priv;
1153 struct au0828_dev *dev = fh->dev;
1154 int i;
8b2f0795 1155
62899a28 1156 dprintk(1, "VIDIOC_S_INPUT in function %s, input=%d\n", __func__,
8b2f0795 1157 index);
62899a28 1158 if (index >= AU0828_MAX_INPUT)
8b2f0795 1159 return -EINVAL;
62899a28 1160 if (AUVI_INPUT(index).type == 0)
8b2f0795
DH		 1161 return -EINVAL;
1162 dev->ctrl_input = index;
1163
62899a28 1164 switch (AUVI_INPUT(index).type) {
8b2f0795 1165 case AU0828_VMUX_SVIDEO:
8b2f0795
DH		 1166 dev->input_type = AU0828_VMUX_SVIDEO;
1167 break;
8b2f0795 1168 case AU0828_VMUX_COMPOSITE:
8b2f0795
DH		 1169 dev->input_type = AU0828_VMUX_COMPOSITE;
1170 break;
8b2f0795 1171 case AU0828_VMUX_TELEVISION:
8b2f0795
DH		 1172 dev->input_type = AU0828_VMUX_TELEVISION;
1173 break;
8b2f0795 1174 default:
a1094c4c
DH		 1175 dprintk(1, "VIDIOC_S_INPUT unknown input type set [%d]\n",
1176 AUVI_INPUT(index).type);
1177 break;
8b2f0795
DH		 1178 }
1179
5325b427
HV		 1180 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
1181 AUVI_INPUT(index).vmux, 0, 0);
8b2f0795
DH		 1182
1183 for (i = 0; i < AU0828_MAX_INPUT; i++) {
1184 int enable = 0;
62899a28 1185 if (AUVI_INPUT(i).audio_setup == NULL)
8b2f0795 1186 continue;
8b2f0795
DH		 1187
1188 if (i == index)
1189 enable = 1;
1190 else
1191 enable = 0;
1192 if (enable) {
f1add5b5 1193 (AUVI_INPUT(i).audio_setup)(dev, enable);
8b2f0795
DH		 1194 } else {
1195 /* Make sure we leave it turned on if some
1196 other input is routed to this callback */
f1add5b5
DH		 1197 if ((AUVI_INPUT(i).audio_setup) !=
1198 ((AUVI_INPUT(index).audio_setup))) {
1199 (AUVI_INPUT(i).audio_setup)(dev, enable);
8b2f0795
DH		 1200 }
1201 }
1202 }
1203
5325b427
HV		 1204 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
1205 AUVI_INPUT(index).amux, 0, 0);
8b2f0795
DH		 1206 return 0;
1207}
1208
1209static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1210{
1211 struct au0828_fh *fh = priv;
1212 struct au0828_dev *dev = fh->dev;
1213 unsigned int index = a->index;
1214
62899a28 1215 if (a->index > 1)
8b2f0795
DH		 1216 return -EINVAL;
1217
8b2f0795 1218 index = dev->ctrl_ainput;
62899a28 1219 if (index == 0)
8b2f0795
DH		 1220 strcpy(a->name, "Television");
1221 else
1222 strcpy(a->name, "Line in");
1223
1224 a->capability = V4L2_AUDCAP_STEREO;
1225 a->index = index;
1226 return 0;
1227}
1228
1229static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1230{
1231 struct au0828_fh *fh = priv;
1232 struct au0828_dev *dev = fh->dev;
62899a28 1233 if (a->index != dev->ctrl_ainput)
8b2f0795
DH		 1234 return -EINVAL;
1235 return 0;
1236}
1237
1238static int vidioc_g_ctrl(struct file *file, void *priv,
1239 struct v4l2_control *ctrl)
1240{
1241 struct au0828_fh *fh = priv;
1242 struct au0828_dev *dev = fh->dev;
1243
2689d3dc 1244 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
8b2f0795
DH		 1245 return 0;
1246
1247}
1248
1249static int vidioc_s_ctrl(struct file *file, void *priv,
1250 struct v4l2_control *ctrl)
1251{
1252 struct au0828_fh *fh = priv;
1253 struct au0828_dev *dev = fh->dev;
2689d3dc 1254 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
8b2f0795
DH		 1255 return 0;
1256}
1257
1258static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1259{
1260 struct au0828_fh *fh = priv;
1261 struct au0828_dev *dev = fh->dev;
1262
62899a28 1263 if (t->index != 0)
8b2f0795
DH		 1264 return -EINVAL;
1265
8b2f0795 1266 strcpy(t->name, "Auvitek tuner");
2689d3dc 1267 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
8b2f0795
DH		 1268 return 0;
1269}
1270
1271static int vidioc_s_tuner(struct file *file, void *priv,
1272 struct v4l2_tuner *t)
1273{
1274 struct au0828_fh *fh = priv;
1275 struct au0828_dev *dev = fh->dev;
1276
62899a28 1277 if (t->index != 0)
8b2f0795
DH		 1278 return -EINVAL;
1279
1280 t->type = V4L2_TUNER_ANALOG_TV;
2689d3dc 1281 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
8b2f0795
DH		 1282 dprintk(1, "VIDIOC_S_TUNER: signal = %x, afc = %x\n", t->signal,
1283 t->afc);
1284 return 0;
1285
1286}
1287
1288static int vidioc_g_frequency(struct file *file, void *priv,
1289 struct v4l2_frequency *freq)
1290{
1291 struct au0828_fh *fh = priv;
1292 struct au0828_dev *dev = fh->dev;
c888923d 1293
8b2f0795
DH		 1294 freq->type = V4L2_TUNER_ANALOG_TV;
1295 freq->frequency = dev->ctrl_freq;
1296 return 0;
1297}
1298
1299static int vidioc_s_frequency(struct file *file, void *priv,
1300 struct v4l2_frequency *freq)
1301{
1302 struct au0828_fh *fh = priv;
1303 struct au0828_dev *dev = fh->dev;
1304
62899a28 1305 if (freq->tuner != 0)
8b2f0795 1306 return -EINVAL;
62899a28 1307 if (freq->type != V4L2_TUNER_ANALOG_TV)
8b2f0795
DH		 1308 return -EINVAL;
1309
1310 dev->ctrl_freq = freq->frequency;
1311
2689d3dc 1312 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, freq);
8b2f0795
DH		 1313
1314 au0828_analog_stream_reset(dev);
1315
1316 return 0;
1317}
1318
1319static int vidioc_g_chip_ident(struct file *file, void *priv,
1320 struct v4l2_dbg_chip_ident *chip)
1321{
1322 struct au0828_fh *fh = priv;
1323 struct au0828_dev *dev = fh->dev;
1324 chip->ident = V4L2_IDENT_NONE;
1325 chip->revision = 0;
1326
d9109bef
DH		 1327 if (v4l2_chip_match_host(&chip->match)) {
1328 chip->ident = V4L2_IDENT_AU0828;
1329 return 0;
1330 }
1331
2689d3dc 1332 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
d9109bef
DH		 1333 if (chip->ident == V4L2_IDENT_NONE)
1334 return -EINVAL;
1335
8b2f0795
DH		 1336 return 0;
1337}
1338
1339static int vidioc_cropcap(struct file *file, void *priv,
1340 struct v4l2_cropcap *cc)
1341{
1342 struct au0828_fh *fh = priv;
1343 struct au0828_dev *dev = fh->dev;
1344
62899a28 1345 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
8b2f0795
DH		 1346 return -EINVAL;
1347
1348 cc->bounds.left = 0;
1349 cc->bounds.top = 0;
1350 cc->bounds.width = dev->width;
1351 cc->bounds.height = dev->height;
1352
1353 cc->defrect = cc->bounds;
1354
1355 cc->pixelaspect.numerator = 54;
1356 cc->pixelaspect.denominator = 59;
1357
1358 return 0;
1359}
1360
1361static int vidioc_streamon(struct file *file, void *priv,
1362 enum v4l2_buf_type type)
1363{
1364 struct au0828_fh *fh = priv;
1365 struct au0828_dev *dev = fh->dev;
8b2f0795
DH		 1366 int rc;
1367
1368 rc = check_dev(dev);
1369 if (rc < 0)
1370 return rc;
1371
1372 if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1373 au0828_analog_stream_enable(dev);
2689d3dc 1374 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 1);
8b2f0795
DH		 1375 }
1376
1377 mutex_lock(&dev->lock);
1378 rc = res_get(fh);
1379
1380 if (likely(rc >= 0))
1381 rc = videobuf_streamon(&fh->vb_vidq);
1382 mutex_unlock(&dev->lock);
1383
1384 return rc;
1385}
1386
1387static int vidioc_streamoff(struct file *file, void *priv,
1388 enum v4l2_buf_type type)
1389{
1390 struct au0828_fh *fh = priv;
1391 struct au0828_dev *dev = fh->dev;
8b2f0795
DH		 1392 int i;
1393 int ret;
1394 int rc;
1395
1396 rc = check_dev(dev);
1397 if (rc < 0)
1398 return rc;
1399
1400 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1401 return -EINVAL;
1402 if (type != fh->type)
1403 return -EINVAL;
1404
1405 if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
2689d3dc 1406 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
62899a28
DH		 1407 ret = au0828_stream_interrupt(dev);
1408 if (ret != 0)
8b2f0795
DH		 1409 return ret;
1410 }
1411
1412 for (i = 0; i < AU0828_MAX_INPUT; i++) {
62899a28 1413 if (AUVI_INPUT(i).audio_setup == NULL)
8b2f0795 1414 continue;
f1add5b5 1415 (AUVI_INPUT(i).audio_setup)(dev, 0);
8b2f0795
DH		 1416 }
1417
1418 mutex_lock(&dev->lock);
1419 videobuf_streamoff(&fh->vb_vidq);
1420 res_free(fh);
1421 mutex_unlock(&dev->lock);
1422
1423 return 0;
1424}
1425
80c6e358 1426#ifdef CONFIG_VIDEO_ADV_DEBUG
8b2f0795
DH		 1427static int vidioc_g_register(struct file *file, void *priv,
1428 struct v4l2_dbg_register *reg)
1429{
1430 struct au0828_fh *fh = priv;
1431 struct au0828_dev *dev = fh->dev;
1432
1433 switch (reg->match.type) {
1434 case V4L2_CHIP_MATCH_I2C_DRIVER:
2689d3dc 1435 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
8b2f0795
DH		 1436 return 0;
1437 default:
1438 return -EINVAL;
1439 }
1440}
1441
1442static int vidioc_s_register(struct file *file, void *priv,
1443 struct v4l2_dbg_register *reg)
1444{
1445 struct au0828_fh *fh = priv;
1446 struct au0828_dev *dev = fh->dev;
1447
1448 switch (reg->match.type) {
1449 case V4L2_CHIP_MATCH_I2C_DRIVER:
2689d3dc 1450 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
8b2f0795
DH		 1451 return 0;
1452 default:
1453 return -EINVAL;
1454 }
1455 return 0;
1456}
80c6e358 1457#endif
8b2f0795
DH		 1458
1459static int vidioc_reqbufs(struct file *file, void *priv,
1460 struct v4l2_requestbuffers *rb)
1461{
1462 struct au0828_fh *fh = priv;
1463 struct au0828_dev *dev = fh->dev;
1464 int rc;
1465
1466 rc = check_dev(dev);
1467 if (rc < 0)
1468 return rc;
1469
1470 return videobuf_reqbufs(&fh->vb_vidq, rb);
1471}
1472
1473static int vidioc_querybuf(struct file *file, void *priv,
1474 struct v4l2_buffer *b)
1475{
1476 struct au0828_fh *fh = priv;
1477 struct au0828_dev *dev = fh->dev;
1478 int rc;
1479
1480 rc = check_dev(dev);
1481 if (rc < 0)
1482 return rc;
1483
1484 return videobuf_querybuf(&fh->vb_vidq, b);
1485}
1486
1487static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1488{
1489 struct au0828_fh *fh = priv;
1490 struct au0828_dev *dev = fh->dev;
1491 int rc;
1492
1493 rc = check_dev(dev);
1494 if (rc < 0)
1495 return rc;
1496
1497 return videobuf_qbuf(&fh->vb_vidq, b);
1498}
1499
1500static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1501{
1502 struct au0828_fh *fh = priv;
1503 struct au0828_dev *dev = fh->dev;
1504 int rc;
1505
1506 rc = check_dev(dev);
1507 if (rc < 0)
1508 return rc;
1509
1510 /* Workaround for a bug in the au0828 hardware design that sometimes
1511 results in the colorspace being inverted */
1512 if (dev->greenscreen_detected == 1) {
1513 dprintk(1, "Detected green frame. Resetting stream...\n");
1514 au0828_analog_stream_reset(dev);
1515 dev->greenscreen_detected = 0;
1516 }
1517
1518 return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1519}
1520
1521#ifdef CONFIG_VIDEO_V4L1_COMPAT
1522static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1523{
1524 struct au0828_fh *fh = priv;
1525
1526 return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1527}
1528#endif
1529
1530static struct v4l2_file_operations au0828_v4l_fops = {
1531 .owner = THIS_MODULE,
1532 .open = au0828_v4l2_open,
1533 .release = au0828_v4l2_close,
1534 .read = au0828_v4l2_read,
1535 .poll = au0828_v4l2_poll,
1536 .mmap = au0828_v4l2_mmap,
1537 .ioctl = video_ioctl2,
1538};
1539
1540static const struct v4l2_ioctl_ops video_ioctl_ops = {
1541 .vidioc_querycap = vidioc_querycap,
1542 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1543 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1544 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1545 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
dd27ade7 1546#ifdef VBI_IS_WORKING
5a5a4e16
DH		 1547 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1548 .vidioc_try_fmt_vbi_cap = vidioc_s_fmt_vbi_cap,
1549 .vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap,
1550#endif
8b2f0795
DH		 1551 .vidioc_g_audio = vidioc_g_audio,
1552 .vidioc_s_audio = vidioc_s_audio,
1553 .vidioc_cropcap = vidioc_cropcap,
dd27ade7 1554#ifdef VBI_IS_WORKING
8b2f0795
DH		 1555 .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap,
1556 .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
1557 .vidioc_s_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
1558#endif
1559 .vidioc_reqbufs = vidioc_reqbufs,
1560 .vidioc_querybuf = vidioc_querybuf,
1561 .vidioc_qbuf = vidioc_qbuf,
1562 .vidioc_dqbuf = vidioc_dqbuf,
1563 .vidioc_s_std = vidioc_s_std,
1564 .vidioc_enum_input = vidioc_enum_input,
1565 .vidioc_g_input = vidioc_g_input,
1566 .vidioc_s_input = vidioc_s_input,
1567 .vidioc_queryctrl = vidioc_queryctrl,
1568 .vidioc_g_ctrl = vidioc_g_ctrl,
1569 .vidioc_s_ctrl = vidioc_s_ctrl,
1570 .vidioc_streamon = vidioc_streamon,
1571 .vidioc_streamoff = vidioc_streamoff,
1572 .vidioc_g_tuner = vidioc_g_tuner,
1573 .vidioc_s_tuner = vidioc_s_tuner,
1574 .vidioc_g_frequency = vidioc_g_frequency,
1575 .vidioc_s_frequency = vidioc_s_frequency,
1576#ifdef CONFIG_VIDEO_ADV_DEBUG
1577 .vidioc_g_register = vidioc_g_register,
1578 .vidioc_s_register = vidioc_s_register,
8b2f0795 1579#endif
80c6e358 1580 .vidioc_g_chip_ident = vidioc_g_chip_ident,
8b2f0795
DH		 1581#ifdef CONFIG_VIDEO_V4L1_COMPAT
1582 .vidiocgmbuf = vidiocgmbuf,
1583#endif
1584};
1585
1586static const struct video_device au0828_video_template = {
1587 .fops = &au0828_v4l_fops,
1588 .release = video_device_release,
1589 .ioctl_ops = &video_ioctl_ops,
1590 .minor = -1,
0ef21071
DH		 1591 .tvnorms = V4L2_STD_NTSC_M,
1592 .current_norm = V4L2_STD_NTSC_M,
8b2f0795
DH		 1593};
1594
1595/**************************************************************************/
1596
fc4ce6cd
DH		 1597int au0828_analog_register(struct au0828_dev *dev,
1598 struct usb_interface *interface)
8b2f0795
DH		 1599{
1600 int retval = -ENOMEM;
fc4ce6cd
DH		 1601 struct usb_host_interface *iface_desc;
1602 struct usb_endpoint_descriptor *endpoint;
1603 int i;
8b2f0795
DH		 1604
1605 dprintk(1, "au0828_analog_register called!\n");
1606
fc4ce6cd
DH		 1607 /* set au0828 usb interface0 to as5 */
1608 retval = usb_set_interface(dev->usbdev,
62899a28 1609 interface->cur_altsetting->desc.bInterfaceNumber, 5);
fc4ce6cd 1610 if (retval != 0) {
62899a28 1611 printk(KERN_INFO "Failure setting usb interface0 to as5\n");
fc4ce6cd
DH		 1612 return retval;
1613 }
1614
1615 /* Figure out which endpoint has the isoc interface */
1616 iface_desc = interface->cur_altsetting;
62899a28 1617 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
fc4ce6cd 1618 endpoint = &iface_desc->endpoint[i].desc;
62899a28
DH		 1619 if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1620 == USB_DIR_IN) &&
1621 ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1622 == USB_ENDPOINT_XFER_ISOC)) {
fc4ce6cd
DH		 1623
1624 /* we find our isoc in endpoint */
1625 u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
62899a28
DH		 1626 dev->max_pkt_size = (tmp & 0x07ff) *
1627 (((tmp & 0x1800) >> 11) + 1);
fc4ce6cd
DH		 1628 dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
1629 }
1630 }
62899a28
DH		 1631 if (!(dev->isoc_in_endpointaddr)) {
1632 printk(KERN_INFO "Could not locate isoc endpoint\n");
fc4ce6cd
DH		 1633 kfree(dev);
1634 return -ENODEV;
1635 }
1636
8b2f0795
DH		 1637 init_waitqueue_head(&dev->open);
1638 spin_lock_init(&dev->slock);
1639 mutex_init(&dev->lock);
1640
1641 INIT_LIST_HEAD(&dev->vidq.active);
1642 INIT_LIST_HEAD(&dev->vidq.queued);
1643
1644 dev->width = NTSC_STD_W;
1645 dev->height = NTSC_STD_H;
1646 dev->field_size = dev->width * dev->height;
1647 dev->frame_size = dev->field_size << 1;
1648 dev->bytesperline = dev->width << 1;
1649 dev->ctrl_ainput = 0;
1650
1651 /* allocate and fill v4l2 video struct */
1652 dev->vdev = video_device_alloc();
62899a28 1653 if (NULL == dev->vdev) {
8b2f0795
DH		 1654 dprintk(1, "Can't allocate video_device.\n");
1655 return -ENOMEM;
1656 }
1657
dd27ade7 1658#ifdef VBI_IS_WORKING
8b2f0795 1659 dev->vbi_dev = video_device_alloc();
62899a28 1660 if (NULL == dev->vbi_dev) {
8b2f0795
DH		 1661 dprintk(1, "Can't allocate vbi_device.\n");
1662 kfree(dev->vdev);
1663 return -ENOMEM;
1664 }
5a5a4e16 1665#endif
8b2f0795
DH		 1666
1667 /* Fill the video capture device struct */
1668 *dev->vdev = au0828_video_template;
8b2f0795
DH		 1669 dev->vdev->parent = &dev->usbdev->dev;
1670 strcpy(dev->vdev->name, "au0828a video");
1671
dd27ade7 1672#ifdef VBI_IS_WORKING
8b2f0795
DH		 1673 /* Setup the VBI device */
1674 *dev->vbi_dev = au0828_video_template;
8b2f0795
DH		 1675 dev->vbi_dev->parent = &dev->usbdev->dev;
1676 strcpy(dev->vbi_dev->name, "au0828a vbi");
5a5a4e16 1677#endif
8b2f0795
DH		 1678
1679 list_add_tail(&dev->au0828list, &au0828_devlist);
1680
1681 /* Register the v4l2 device */
62899a28
DH		 1682 retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, -1);
1683 if (retval != 0) {
1684 dprintk(1, "unable to register video device (error = %d).\n",
1685 retval);
8b2f0795
DH		 1686 list_del(&dev->au0828list);
1687 video_device_release(dev->vdev);
1688 return -ENODEV;
1689 }
1690
dd27ade7 1691#ifdef VBI_IS_WORKING
8b2f0795 1692 /* Register the vbi device */
62899a28
DH		 1693 retval = video_register_device(dev->vbi_dev, VFL_TYPE_VBI, -1);
1694 if (retval != 0) {
1695 dprintk(1, "unable to register vbi device (error = %d).\n",
1696 retval);
8b2f0795
DH		 1697 list_del(&dev->au0828list);
1698 video_device_release(dev->vbi_dev);
1699 video_device_release(dev->vdev);
1700 return -ENODEV;
1701 }
5a5a4e16 1702#endif
8b2f0795 1703
62899a28 1704 dprintk(1, "%s completed!\n", __func__);
8b2f0795
DH		 1705
1706 return 0;
1707}
1708
Linux kernel - Deliverables
This page took 0.175189 seconds and 5 git commands to generate.