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V4L/DVB (11086): au0828: rename macro for currently non-function VBI support
[mirror_ubuntu-kernels.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;
270 urb->transfer_flags = URB_ISO_ASAP;
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
832 /* When close the device, set the usb intf0 into alt0 to free
833 USB bandwidth */
834 ret = usb_set_interface(dev->usbdev, 0, 0);
62899a28
DH		 835 if (ret < 0)
836 printk(KERN_INFO "Au0828 can't set alternate to 0!\n");
8b2f0795
DH		 837 }
838
839 kfree(fh);
840 dev->users--;
841 wake_up_interruptible_nr(&dev->open, 1);
842 mutex_unlock(&dev->lock);
843 return 0;
844}
845
846static ssize_t au0828_v4l2_read(struct file *filp, char __user *buf,
847 size_t count, loff_t *pos)
848{
849 struct au0828_fh *fh = filp->private_data;
850 struct au0828_dev *dev = fh->dev;
851 int rc;
852
853 rc = check_dev(dev);
854 if (rc < 0)
855 return rc;
856
62899a28 857 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
8b2f0795
DH		 858 mutex_lock(&dev->lock);
859 rc = res_get(fh);
860 mutex_unlock(&dev->lock);
861
862 if (unlikely(rc < 0))
863 return rc;
864
865 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
866 filp->f_flags & O_NONBLOCK);
867 }
868 return 0;
869}
870
871static unsigned int au0828_v4l2_poll(struct file *filp, poll_table *wait)
872{
873 struct au0828_fh *fh = filp->private_data;
874 struct au0828_dev *dev = fh->dev;
875 int rc;
876
877 rc = check_dev(dev);
878 if (rc < 0)
879 return rc;
880
881 mutex_lock(&dev->lock);
882 rc = res_get(fh);
883 mutex_unlock(&dev->lock);
884
885 if (unlikely(rc < 0))
886 return POLLERR;
887
888 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
889 return POLLERR;
890
891 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
892}
893
894static int au0828_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
895{
896 struct au0828_fh *fh = filp->private_data;
897 struct au0828_dev *dev = fh->dev;
898 int rc;
899
900 rc = check_dev(dev);
901 if (rc < 0)
902 return rc;
903
904 mutex_lock(&dev->lock);
905 rc = res_get(fh);
906 mutex_unlock(&dev->lock);
907
908 if (unlikely(rc < 0))
909 return rc;
910
911 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
912
913 dprintk(2, "vma start=0x%08lx, size=%ld, ret=%d\n",
914 (unsigned long)vma->vm_start,
915 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
916 rc);
917
918 return rc;
919}
920
921static int au0828_set_format(struct au0828_dev *dev, unsigned int cmd,
922 struct v4l2_format *format)
923{
924 int ret;
925 int width = format->fmt.pix.width;
926 int height = format->fmt.pix.height;
927 unsigned int maxwidth, maxheight;
928
929 maxwidth = 720;
930 maxheight = 480;
931
dd27ade7 932#ifdef VBI_IS_WORKING
62899a28 933 if (format->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) {
8b2f0795
DH		 934 dprintk(1, "VBI format set: to be supported!\n");
935 return 0;
936 }
62899a28 937 if (format->type == V4L2_BUF_TYPE_VBI_CAPTURE)
8b2f0795 938 return 0;
5a5a4e16 939#endif
62899a28 940 if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
8b2f0795 941 return -EINVAL;
8b2f0795
DH		 942
943 /* If they are demanding a format other than the one we support,
944 bail out (tvtime asks for UYVY and then retries with YUYV) */
62899a28 945 if (format->fmt.pix.pixelformat != V4L2_PIX_FMT_UYVY)
8b2f0795 946 return -EINVAL;
8b2f0795
DH		 947
948 /* format->fmt.pix.width only support 720 and height 480 */
62899a28 949 if (width != 720)
8b2f0795 950 width = 720;
62899a28 951 if (height != 480)
8b2f0795
DH		 952 height = 480;
953
954 format->fmt.pix.width = width;
955 format->fmt.pix.height = height;
956 format->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
957 format->fmt.pix.bytesperline = width * 2;
958 format->fmt.pix.sizeimage = width * height * 2;
959 format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
960 format->fmt.pix.field = V4L2_FIELD_INTERLACED;
961
62899a28 962 if (cmd == VIDIOC_TRY_FMT)
8b2f0795
DH		 963 return 0;
964
965 /* maybe set new image format, driver current only support 720*480 */
966 dev->width = width;
967 dev->height = height;
968 dev->frame_size = width * height * 2;
969 dev->field_size = width * height;
970 dev->bytesperline = width * 2;
971
62899a28 972 if (dev->stream_state == STREAM_ON) {
8b2f0795 973 dprintk(1, "VIDIOC_SET_FMT: interrupting stream!\n");
62899a28
DH		 974 ret = au0828_stream_interrupt(dev);
975 if (ret != 0) {
8b2f0795
DH		 976 dprintk(1, "error interrupting video stream!\n");
977 return ret;
978 }
979 }
980
981 /* set au0828 interface0 to AS5 here again */
982 ret = usb_set_interface(dev->usbdev, 0, 5);
62899a28
DH		 983 if (ret < 0) {
984 printk(KERN_INFO "Au0828 can't set alt setting to 5!\n");
8b2f0795
DH		 985 return -EBUSY;
986 }
987
988 au0828_analog_stream_enable(dev);
989
990 return 0;
991}
992
993
994static int vidioc_queryctrl(struct file *file, void *priv,
995 struct v4l2_queryctrl *qc)
996{
997 struct au0828_fh *fh = priv;
998 struct au0828_dev *dev = fh->dev;
999 au0828_call_i2c_clients(dev, VIDIOC_QUERYCTRL, qc);
1000 if (qc->type)
1001 return 0;
1002 else
1003 return -EINVAL;
1004}
1005
1006static int vidioc_querycap(struct file *file, void *priv,
1007 struct v4l2_capability *cap)
1008{
1009 struct au0828_fh *fh = priv;
1010 struct au0828_dev *dev = fh->dev;
1011
8b2f0795 1012 strlcpy(cap->driver, "au0828", sizeof(cap->driver));
f1add5b5 1013 strlcpy(cap->card, dev->board.name, sizeof(cap->card));
b14667f3 1014 strlcpy(cap->bus_info, dev->v4l2_dev.name, sizeof(cap->bus_info));
8b2f0795
DH		 1015
1016 cap->version = AU0828_VERSION_CODE;
1017
1018 /*set the device capabilities */
5a5a4e16 1019 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
dd27ade7 1020#ifdef VBI_IS_WORKING
5a5a4e16
DH		 1021 V4L2_CAP_VBI_CAPTURE |
1022#endif
8b2f0795
DH		 1023 V4L2_CAP_AUDIO |
1024 V4L2_CAP_READWRITE |
1025 V4L2_CAP_STREAMING |
1026 V4L2_CAP_TUNER;
1027 return 0;
1028}
1029
1030static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1031 struct v4l2_fmtdesc *f)
1032{
62899a28 1033 if (f->index)
8b2f0795
DH		 1034 return -EINVAL;
1035
8b2f0795
DH		 1036 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1037 strcpy(f->description, "Packed YUV2");
1038
1039 f->flags = 0;
1040 f->pixelformat = V4L2_PIX_FMT_UYVY;
1041
8b2f0795
DH		 1042 return 0;
1043}
1044
1045static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1046 struct v4l2_format *f)
1047{
1048 struct au0828_fh *fh = priv;
1049 struct au0828_dev *dev = fh->dev;
1050
1051 f->fmt.pix.width = dev->width;
1052 f->fmt.pix.height = dev->height;
1053 f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1054 f->fmt.pix.bytesperline = dev->bytesperline;
1055 f->fmt.pix.sizeimage = dev->frame_size;
1056 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; /* NTSC/PAL */
1057 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1058 return 0;
1059}
1060
1061static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1062 struct v4l2_format *f)
1063{
1064 struct au0828_fh *fh = priv;
1065 struct au0828_dev *dev = fh->dev;
1066
1067 return au0828_set_format(dev, VIDIOC_TRY_FMT, f);
1068}
1069
1070static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1071 struct v4l2_format *f)
1072{
1073 struct au0828_fh *fh = priv;
1074 struct au0828_dev *dev = fh->dev;
1075 int rc;
1076
1077 if (videobuf_queue_is_busy(&fh->vb_vidq)) {
62899a28 1078 printk(KERN_INFO "%s queue busy\n", __func__);
8b2f0795
DH		 1079 rc = -EBUSY;
1080 goto out;
1081 }
1082
1083 if (dev->stream_on && !fh->stream_on) {
62899a28 1084 printk(KERN_INFO "%s device in use by another fh\n", __func__);
8b2f0795
DH		 1085 rc = -EBUSY;
1086 goto out;
1087 }
1088
1089 return au0828_set_format(dev, VIDIOC_S_FMT, f);
1090out:
1091 return rc;
1092}
1093
1094static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id * norm)
1095{
1096 struct au0828_fh *fh = priv;
1097 struct au0828_dev *dev = fh->dev;
1098
1099 /* FIXME: when we support something other than NTSC, we are going to
1100 have to make the au0828 bridge adjust the size of its capture
1101 buffer, which is currently hardcoded at 720x480 */
1102
1103 au0828_call_i2c_clients(dev, VIDIOC_S_STD, norm);
1104 return 0;
1105}
1106
1107static int vidioc_enum_input(struct file *file, void *priv,
1108 struct v4l2_input *input)
1109{
1110 struct au0828_fh *fh = priv;
1111 struct au0828_dev *dev = fh->dev;
1112 unsigned int tmp;
1113
1114 static const char *inames[] = {
3d62287e 1115 [AU0828_VMUX_UNDEFINED] = "Undefined",
8b2f0795
DH		 1116 [AU0828_VMUX_COMPOSITE] = "Composite",
1117 [AU0828_VMUX_SVIDEO] = "S-Video",
1118 [AU0828_VMUX_CABLE] = "Cable TV",
1119 [AU0828_VMUX_TELEVISION] = "Television",
1120 [AU0828_VMUX_DVB] = "DVB",
1121 [AU0828_VMUX_DEBUG] = "tv debug"
1122 };
1123
1124 tmp = input->index;
1125
62899a28 1126 if (tmp > AU0828_MAX_INPUT)
8b2f0795 1127 return -EINVAL;
62899a28 1128 if (AUVI_INPUT(tmp).type == 0)
8b2f0795
DH		 1129 return -EINVAL;
1130
8b2f0795 1131 input->index = tmp;
f1add5b5 1132 strcpy(input->name, inames[AUVI_INPUT(tmp).type]);
62899a28
DH		 1133 if ((AUVI_INPUT(tmp).type == AU0828_VMUX_TELEVISION) ||
1134 (AUVI_INPUT(tmp).type == AU0828_VMUX_CABLE))
8b2f0795
DH		 1135 input->type |= V4L2_INPUT_TYPE_TUNER;
1136 else
1137 input->type |= V4L2_INPUT_TYPE_CAMERA;
1138
1139 input->std = dev->vdev->tvnorms;
1140
1141 return 0;
1142}
1143
1144static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1145{
1146 struct au0828_fh *fh = priv;
1147 struct au0828_dev *dev = fh->dev;
1148 *i = dev->ctrl_input;
1149 return 0;
1150}
1151
1152static int vidioc_s_input(struct file *file, void *priv, unsigned int index)
1153{
1154 struct au0828_fh *fh = priv;
1155 struct au0828_dev *dev = fh->dev;
1156 int i;
1157 struct v4l2_routing route;
1158
62899a28 1159 dprintk(1, "VIDIOC_S_INPUT in function %s, input=%d\n", __func__,
8b2f0795 1160 index);
62899a28 1161 if (index >= AU0828_MAX_INPUT)
8b2f0795 1162 return -EINVAL;
62899a28 1163 if (AUVI_INPUT(index).type == 0)
8b2f0795
DH		 1164 return -EINVAL;
1165 dev->ctrl_input = index;
1166
62899a28 1167 switch (AUVI_INPUT(index).type) {
8b2f0795 1168 case AU0828_VMUX_SVIDEO:
8b2f0795
DH		 1169 dev->input_type = AU0828_VMUX_SVIDEO;
1170 break;
8b2f0795 1171 case AU0828_VMUX_COMPOSITE:
8b2f0795
DH		 1172 dev->input_type = AU0828_VMUX_COMPOSITE;
1173 break;
8b2f0795 1174 case AU0828_VMUX_TELEVISION:
8b2f0795
DH		 1175 dev->input_type = AU0828_VMUX_TELEVISION;
1176 break;
8b2f0795 1177 default:
a1094c4c
DH		 1178 dprintk(1, "VIDIOC_S_INPUT unknown input type set [%d]\n",
1179 AUVI_INPUT(index).type);
1180 break;
8b2f0795
DH		 1181 }
1182
f1add5b5 1183 route.input = AUVI_INPUT(index).vmux;
8b2f0795
DH		 1184 route.output = 0;
1185 au0828_call_i2c_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
1186
1187 for (i = 0; i < AU0828_MAX_INPUT; i++) {
1188 int enable = 0;
62899a28 1189 if (AUVI_INPUT(i).audio_setup == NULL)
8b2f0795 1190 continue;
8b2f0795
DH		 1191
1192 if (i == index)
1193 enable = 1;
1194 else
1195 enable = 0;
1196 if (enable) {
f1add5b5 1197 (AUVI_INPUT(i).audio_setup)(dev, enable);
8b2f0795
DH		 1198 } else {
1199 /* Make sure we leave it turned on if some
1200 other input is routed to this callback */
f1add5b5
DH		 1201 if ((AUVI_INPUT(i).audio_setup) !=
1202 ((AUVI_INPUT(index).audio_setup))) {
1203 (AUVI_INPUT(i).audio_setup)(dev, enable);
8b2f0795
DH		 1204 }
1205 }
1206 }
1207
f1add5b5 1208 route.input = AUVI_INPUT(index).amux;
8b2f0795
DH		 1209 au0828_call_i2c_clients(dev, VIDIOC_INT_S_AUDIO_ROUTING,
1210 &route);
1211 return 0;
1212}
1213
1214static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1215{
1216 struct au0828_fh *fh = priv;
1217 struct au0828_dev *dev = fh->dev;
1218 unsigned int index = a->index;
1219
62899a28 1220 if (a->index > 1)
8b2f0795
DH		 1221 return -EINVAL;
1222
8b2f0795 1223 index = dev->ctrl_ainput;
62899a28 1224 if (index == 0)
8b2f0795
DH		 1225 strcpy(a->name, "Television");
1226 else
1227 strcpy(a->name, "Line in");
1228
1229 a->capability = V4L2_AUDCAP_STEREO;
1230 a->index = index;
1231 return 0;
1232}
1233
1234static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1235{
1236 struct au0828_fh *fh = priv;
1237 struct au0828_dev *dev = fh->dev;
62899a28 1238 if (a->index != dev->ctrl_ainput)
8b2f0795
DH		 1239 return -EINVAL;
1240 return 0;
1241}
1242
1243static int vidioc_g_ctrl(struct file *file, void *priv,
1244 struct v4l2_control *ctrl)
1245{
1246 struct au0828_fh *fh = priv;
1247 struct au0828_dev *dev = fh->dev;
1248
1249 au0828_call_i2c_clients(dev, VIDIOC_G_CTRL, ctrl);
1250 return 0;
1251
1252}
1253
1254static int vidioc_s_ctrl(struct file *file, void *priv,
1255 struct v4l2_control *ctrl)
1256{
1257 struct au0828_fh *fh = priv;
1258 struct au0828_dev *dev = fh->dev;
1259 au0828_call_i2c_clients(dev, VIDIOC_S_CTRL, ctrl);
1260 return 0;
1261}
1262
1263static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1264{
1265 struct au0828_fh *fh = priv;
1266 struct au0828_dev *dev = fh->dev;
1267
62899a28 1268 if (t->index != 0)
8b2f0795
DH		 1269 return -EINVAL;
1270
8b2f0795
DH		 1271 strcpy(t->name, "Auvitek tuner");
1272
1273 au0828_call_i2c_clients(dev, VIDIOC_G_TUNER, t);
1274 return 0;
1275}
1276
1277static int vidioc_s_tuner(struct file *file, void *priv,
1278 struct v4l2_tuner *t)
1279{
1280 struct au0828_fh *fh = priv;
1281 struct au0828_dev *dev = fh->dev;
1282
62899a28 1283 if (t->index != 0)
8b2f0795
DH		 1284 return -EINVAL;
1285
1286 t->type = V4L2_TUNER_ANALOG_TV;
1287 au0828_call_i2c_clients(dev, VIDIOC_S_TUNER, t);
1288 dprintk(1, "VIDIOC_S_TUNER: signal = %x, afc = %x\n", t->signal,
1289 t->afc);
1290 return 0;
1291
1292}
1293
1294static int vidioc_g_frequency(struct file *file, void *priv,
1295 struct v4l2_frequency *freq)
1296{
1297 struct au0828_fh *fh = priv;
1298 struct au0828_dev *dev = fh->dev;
c888923d 1299
8b2f0795
DH		 1300 freq->type = V4L2_TUNER_ANALOG_TV;
1301 freq->frequency = dev->ctrl_freq;
1302 return 0;
1303}
1304
1305static int vidioc_s_frequency(struct file *file, void *priv,
1306 struct v4l2_frequency *freq)
1307{
1308 struct au0828_fh *fh = priv;
1309 struct au0828_dev *dev = fh->dev;
1310
62899a28 1311 if (freq->tuner != 0)
8b2f0795 1312 return -EINVAL;
62899a28 1313 if (freq->type != V4L2_TUNER_ANALOG_TV)
8b2f0795
DH		 1314 return -EINVAL;
1315
1316 dev->ctrl_freq = freq->frequency;
1317
1318 au0828_call_i2c_clients(dev, VIDIOC_S_FREQUENCY, freq);
1319
1320 au0828_analog_stream_reset(dev);
1321
1322 return 0;
1323}
1324
1325static int vidioc_g_chip_ident(struct file *file, void *priv,
1326 struct v4l2_dbg_chip_ident *chip)
1327{
1328 struct au0828_fh *fh = priv;
1329 struct au0828_dev *dev = fh->dev;
1330 chip->ident = V4L2_IDENT_NONE;
1331 chip->revision = 0;
1332
d9109bef
DH		 1333 if (v4l2_chip_match_host(&chip->match)) {
1334 chip->ident = V4L2_IDENT_AU0828;
1335 return 0;
1336 }
1337
8b2f0795 1338 au0828_call_i2c_clients(dev, VIDIOC_DBG_G_CHIP_IDENT, chip);
d9109bef
DH		 1339 if (chip->ident == V4L2_IDENT_NONE)
1340 return -EINVAL;
1341
8b2f0795
DH		 1342 return 0;
1343}
1344
1345static int vidioc_cropcap(struct file *file, void *priv,
1346 struct v4l2_cropcap *cc)
1347{
1348 struct au0828_fh *fh = priv;
1349 struct au0828_dev *dev = fh->dev;
1350
62899a28 1351 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
8b2f0795
DH		 1352 return -EINVAL;
1353
1354 cc->bounds.left = 0;
1355 cc->bounds.top = 0;
1356 cc->bounds.width = dev->width;
1357 cc->bounds.height = dev->height;
1358
1359 cc->defrect = cc->bounds;
1360
1361 cc->pixelaspect.numerator = 54;
1362 cc->pixelaspect.denominator = 59;
1363
1364 return 0;
1365}
1366
1367static int vidioc_streamon(struct file *file, void *priv,
1368 enum v4l2_buf_type type)
1369{
1370 struct au0828_fh *fh = priv;
1371 struct au0828_dev *dev = fh->dev;
1372 int b = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1373 int rc;
1374
1375 rc = check_dev(dev);
1376 if (rc < 0)
1377 return rc;
1378
1379 if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1380 au0828_analog_stream_enable(dev);
1381 au0828_call_i2c_clients(dev, VIDIOC_STREAMON, &b);
1382 }
1383
1384 mutex_lock(&dev->lock);
1385 rc = res_get(fh);
1386
1387 if (likely(rc >= 0))
1388 rc = videobuf_streamon(&fh->vb_vidq);
1389 mutex_unlock(&dev->lock);
1390
1391 return rc;
1392}
1393
1394static int vidioc_streamoff(struct file *file, void *priv,
1395 enum v4l2_buf_type type)
1396{
1397 struct au0828_fh *fh = priv;
1398 struct au0828_dev *dev = fh->dev;
1399 int b = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1400 int i;
1401 int ret;
1402 int rc;
1403
1404 rc = check_dev(dev);
1405 if (rc < 0)
1406 return rc;
1407
1408 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1409 return -EINVAL;
1410 if (type != fh->type)
1411 return -EINVAL;
1412
1413 if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1414 au0828_call_i2c_clients(dev, VIDIOC_STREAMOFF, &b);
62899a28
DH		 1415 ret = au0828_stream_interrupt(dev);
1416 if (ret != 0)
8b2f0795
DH		 1417 return ret;
1418 }
1419
1420 for (i = 0; i < AU0828_MAX_INPUT; i++) {
62899a28 1421 if (AUVI_INPUT(i).audio_setup == NULL)
8b2f0795 1422 continue;
f1add5b5 1423 (AUVI_INPUT(i).audio_setup)(dev, 0);
8b2f0795
DH		 1424 }
1425
1426 mutex_lock(&dev->lock);
1427 videobuf_streamoff(&fh->vb_vidq);
1428 res_free(fh);
1429 mutex_unlock(&dev->lock);
1430
1431 return 0;
1432}
1433
1434static int vidioc_g_register(struct file *file, void *priv,
1435 struct v4l2_dbg_register *reg)
1436{
1437 struct au0828_fh *fh = priv;
1438 struct au0828_dev *dev = fh->dev;
1439
1440 switch (reg->match.type) {
1441 case V4L2_CHIP_MATCH_I2C_DRIVER:
1442 au0828_call_i2c_clients(dev, VIDIOC_DBG_G_REGISTER, reg);
1443 return 0;
1444 default:
1445 return -EINVAL;
1446 }
1447}
1448
1449static int vidioc_s_register(struct file *file, void *priv,
1450 struct v4l2_dbg_register *reg)
1451{
1452 struct au0828_fh *fh = priv;
1453 struct au0828_dev *dev = fh->dev;
1454
1455 switch (reg->match.type) {
1456 case V4L2_CHIP_MATCH_I2C_DRIVER:
1457 au0828_call_i2c_clients(dev, VIDIOC_DBG_S_REGISTER, reg);
1458 return 0;
1459 default:
1460 return -EINVAL;
1461 }
1462 return 0;
1463}
1464
1465static int vidioc_reqbufs(struct file *file, void *priv,
1466 struct v4l2_requestbuffers *rb)
1467{
1468 struct au0828_fh *fh = priv;
1469 struct au0828_dev *dev = fh->dev;
1470 int rc;
1471
1472 rc = check_dev(dev);
1473 if (rc < 0)
1474 return rc;
1475
1476 return videobuf_reqbufs(&fh->vb_vidq, rb);
1477}
1478
1479static int vidioc_querybuf(struct file *file, void *priv,
1480 struct v4l2_buffer *b)
1481{
1482 struct au0828_fh *fh = priv;
1483 struct au0828_dev *dev = fh->dev;
1484 int rc;
1485
1486 rc = check_dev(dev);
1487 if (rc < 0)
1488 return rc;
1489
1490 return videobuf_querybuf(&fh->vb_vidq, b);
1491}
1492
1493static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1494{
1495 struct au0828_fh *fh = priv;
1496 struct au0828_dev *dev = fh->dev;
1497 int rc;
1498
1499 rc = check_dev(dev);
1500 if (rc < 0)
1501 return rc;
1502
1503 return videobuf_qbuf(&fh->vb_vidq, b);
1504}
1505
1506static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1507{
1508 struct au0828_fh *fh = priv;
1509 struct au0828_dev *dev = fh->dev;
1510 int rc;
1511
1512 rc = check_dev(dev);
1513 if (rc < 0)
1514 return rc;
1515
1516 /* Workaround for a bug in the au0828 hardware design that sometimes
1517 results in the colorspace being inverted */
1518 if (dev->greenscreen_detected == 1) {
1519 dprintk(1, "Detected green frame. Resetting stream...\n");
1520 au0828_analog_stream_reset(dev);
1521 dev->greenscreen_detected = 0;
1522 }
1523
1524 return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1525}
1526
1527#ifdef CONFIG_VIDEO_V4L1_COMPAT
1528static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1529{
1530 struct au0828_fh *fh = priv;
1531
1532 return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1533}
1534#endif
1535
1536static struct v4l2_file_operations au0828_v4l_fops = {
1537 .owner = THIS_MODULE,
1538 .open = au0828_v4l2_open,
1539 .release = au0828_v4l2_close,
1540 .read = au0828_v4l2_read,
1541 .poll = au0828_v4l2_poll,
1542 .mmap = au0828_v4l2_mmap,
1543 .ioctl = video_ioctl2,
1544};
1545
1546static const struct v4l2_ioctl_ops video_ioctl_ops = {
1547 .vidioc_querycap = vidioc_querycap,
1548 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1549 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1550 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1551 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
dd27ade7 1552#ifdef VBI_IS_WORKING
5a5a4e16
DH		 1553 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1554 .vidioc_try_fmt_vbi_cap = vidioc_s_fmt_vbi_cap,
1555 .vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap,
1556#endif
8b2f0795
DH		 1557 .vidioc_g_audio = vidioc_g_audio,
1558 .vidioc_s_audio = vidioc_s_audio,
1559 .vidioc_cropcap = vidioc_cropcap,
dd27ade7 1560#ifdef VBI_IS_WORKING
8b2f0795
DH		 1561 .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap,
1562 .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
1563 .vidioc_s_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
1564#endif
1565 .vidioc_reqbufs = vidioc_reqbufs,
1566 .vidioc_querybuf = vidioc_querybuf,
1567 .vidioc_qbuf = vidioc_qbuf,
1568 .vidioc_dqbuf = vidioc_dqbuf,
1569 .vidioc_s_std = vidioc_s_std,
1570 .vidioc_enum_input = vidioc_enum_input,
1571 .vidioc_g_input = vidioc_g_input,
1572 .vidioc_s_input = vidioc_s_input,
1573 .vidioc_queryctrl = vidioc_queryctrl,
1574 .vidioc_g_ctrl = vidioc_g_ctrl,
1575 .vidioc_s_ctrl = vidioc_s_ctrl,
1576 .vidioc_streamon = vidioc_streamon,
1577 .vidioc_streamoff = vidioc_streamoff,
1578 .vidioc_g_tuner = vidioc_g_tuner,
1579 .vidioc_s_tuner = vidioc_s_tuner,
1580 .vidioc_g_frequency = vidioc_g_frequency,
1581 .vidioc_s_frequency = vidioc_s_frequency,
1582#ifdef CONFIG_VIDEO_ADV_DEBUG
1583 .vidioc_g_register = vidioc_g_register,
1584 .vidioc_s_register = vidioc_s_register,
1585 .vidioc_g_chip_ident = vidioc_g_chip_ident,
1586#endif
1587#ifdef CONFIG_VIDEO_V4L1_COMPAT
1588 .vidiocgmbuf = vidiocgmbuf,
1589#endif
1590};
1591
1592static const struct video_device au0828_video_template = {
1593 .fops = &au0828_v4l_fops,
1594 .release = video_device_release,
1595 .ioctl_ops = &video_ioctl_ops,
1596 .minor = -1,
0ef21071
DH		 1597 .tvnorms = V4L2_STD_NTSC_M,
1598 .current_norm = V4L2_STD_NTSC_M,
8b2f0795
DH		 1599};
1600
1601/**************************************************************************/
1602
fc4ce6cd
DH		 1603int au0828_analog_register(struct au0828_dev *dev,
1604 struct usb_interface *interface)
8b2f0795
DH		 1605{
1606 int retval = -ENOMEM;
fc4ce6cd
DH		 1607 struct usb_host_interface *iface_desc;
1608 struct usb_endpoint_descriptor *endpoint;
1609 int i;
8b2f0795
DH		 1610
1611 dprintk(1, "au0828_analog_register called!\n");
1612
fc4ce6cd
DH		 1613 /* set au0828 usb interface0 to as5 */
1614 retval = usb_set_interface(dev->usbdev,
62899a28 1615 interface->cur_altsetting->desc.bInterfaceNumber, 5);
fc4ce6cd 1616 if (retval != 0) {
62899a28 1617 printk(KERN_INFO "Failure setting usb interface0 to as5\n");
fc4ce6cd
DH		 1618 return retval;
1619 }
1620
1621 /* Figure out which endpoint has the isoc interface */
1622 iface_desc = interface->cur_altsetting;
62899a28 1623 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
fc4ce6cd 1624 endpoint = &iface_desc->endpoint[i].desc;
62899a28
DH		 1625 if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1626 == USB_DIR_IN) &&
1627 ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1628 == USB_ENDPOINT_XFER_ISOC)) {
fc4ce6cd
DH		 1629
1630 /* we find our isoc in endpoint */
1631 u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
62899a28
DH		 1632 dev->max_pkt_size = (tmp & 0x07ff) *
1633 (((tmp & 0x1800) >> 11) + 1);
fc4ce6cd
DH		 1634 dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
1635 }
1636 }
62899a28
DH		 1637 if (!(dev->isoc_in_endpointaddr)) {
1638 printk(KERN_INFO "Could not locate isoc endpoint\n");
fc4ce6cd
DH		 1639 kfree(dev);
1640 return -ENODEV;
1641 }
1642
8b2f0795
DH		 1643 init_waitqueue_head(&dev->open);
1644 spin_lock_init(&dev->slock);
1645 mutex_init(&dev->lock);
1646
1647 INIT_LIST_HEAD(&dev->vidq.active);
1648 INIT_LIST_HEAD(&dev->vidq.queued);
1649
1650 dev->width = NTSC_STD_W;
1651 dev->height = NTSC_STD_H;
1652 dev->field_size = dev->width * dev->height;
1653 dev->frame_size = dev->field_size << 1;
1654 dev->bytesperline = dev->width << 1;
1655 dev->ctrl_ainput = 0;
1656
1657 /* allocate and fill v4l2 video struct */
1658 dev->vdev = video_device_alloc();
62899a28 1659 if (NULL == dev->vdev) {
8b2f0795
DH		 1660 dprintk(1, "Can't allocate video_device.\n");
1661 return -ENOMEM;
1662 }
1663
dd27ade7 1664#ifdef VBI_IS_WORKING
8b2f0795 1665 dev->vbi_dev = video_device_alloc();
62899a28 1666 if (NULL == dev->vbi_dev) {
8b2f0795
DH		 1667 dprintk(1, "Can't allocate vbi_device.\n");
1668 kfree(dev->vdev);
1669 return -ENOMEM;
1670 }
5a5a4e16 1671#endif
8b2f0795
DH		 1672
1673 /* Fill the video capture device struct */
1674 *dev->vdev = au0828_video_template;
8b2f0795
DH		 1675 dev->vdev->parent = &dev->usbdev->dev;
1676 strcpy(dev->vdev->name, "au0828a video");
1677
dd27ade7 1678#ifdef VBI_IS_WORKING
8b2f0795
DH		 1679 /* Setup the VBI device */
1680 *dev->vbi_dev = au0828_video_template;
8b2f0795
DH		 1681 dev->vbi_dev->parent = &dev->usbdev->dev;
1682 strcpy(dev->vbi_dev->name, "au0828a vbi");
5a5a4e16 1683#endif
8b2f0795
DH		 1684
1685 list_add_tail(&dev->au0828list, &au0828_devlist);
1686
1687 /* Register the v4l2 device */
62899a28
DH		 1688 retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, -1);
1689 if (retval != 0) {
1690 dprintk(1, "unable to register video device (error = %d).\n",
1691 retval);
8b2f0795
DH		 1692 list_del(&dev->au0828list);
1693 video_device_release(dev->vdev);
1694 return -ENODEV;
1695 }
1696
dd27ade7 1697#ifdef VBI_IS_WORKING
8b2f0795 1698 /* Register the vbi device */
62899a28
DH		 1699 retval = video_register_device(dev->vbi_dev, VFL_TYPE_VBI, -1);
1700 if (retval != 0) {
1701 dprintk(1, "unable to register vbi device (error = %d).\n",
1702 retval);
8b2f0795
DH		 1703 list_del(&dev->au0828list);
1704 video_device_release(dev->vbi_dev);
1705 video_device_release(dev->vdev);
1706 return -ENODEV;
1707 }
5a5a4e16 1708#endif
8b2f0795 1709
62899a28 1710 dprintk(1, "%s completed!\n", __func__);
8b2f0795
DH		 1711
1712 return 0;
1713}
1714
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