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V4L/DVB (8482): videodev: move all ioctl callbacks to a new v4l2_ioctl_ops struct
[mirror_ubuntu-hirsute-kernel.git] / drivers / media / video / em28xx / em28xx-video.c
CommitLineData
a6c2ba28 1/*
6ea54d93
DSL		 2 em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB
3 video capture devices
a6c2ba28 4
f7abcd38
MCC		 5 Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
6 Markus Rechberger <mrechberger@gmail.com>
2e7c6dc3 7 Mauro Carvalho Chehab <mchehab@infradead.org>
f7abcd38 8 Sascha Sommer <saschasommer@freenet.de>
a6c2ba28 9
439090d7
MCC		 10 Some parts based on SN9C10x PC Camera Controllers GPL driver made
11 by Luca Risolia <luca.risolia@studio.unibo.it>
12
a6c2ba28 13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
17
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
22
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27
28#include <linux/init.h>
29#include <linux/list.h>
30#include <linux/module.h>
31#include <linux/kernel.h>
e5589bef 32#include <linux/bitmap.h>
a6c2ba28 33#include <linux/usb.h>
a6c2ba28 34#include <linux/i2c.h>
b296fc60 35#include <linux/version.h>
6d35c8f6 36#include <linux/mm.h>
1e4baed3 37#include <linux/mutex.h>
a6c2ba28 38
f7abcd38 39#include "em28xx.h"
c0477ad9 40#include <media/v4l2-common.h>
35ea11ff 41#include <media/v4l2-ioctl.h>
2474ed44 42#include <media/msp3400.h>
ed086314 43#include <media/tuner.h>
a6c2ba28 44
f7abcd38
MCC		 45#define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
46 "Markus Rechberger <mrechberger@gmail.com>, " \
2e7c6dc3 47 "Mauro Carvalho Chehab <mchehab@infradead.org>, " \
f7abcd38 48 "Sascha Sommer <saschasommer@freenet.de>"
a6c2ba28 49
f7abcd38
MCC		 50#define DRIVER_NAME "em28xx"
51#define DRIVER_DESC "Empia em28xx based USB video device driver"
195a4ef6 52#define EM28XX_VERSION_CODE KERNEL_VERSION(0, 1, 0)
a6c2ba28 53
3acf2809 54#define em28xx_videodbg(fmt, arg...) do {\
4ac97914
MCC		 55 if (video_debug) \
56 printk(KERN_INFO "%s %s :"fmt, \
d80e134d 57 dev->name, __func__ , ##arg); } while (0)
a6c2ba28 58
ad0ebb96 59static unsigned int isoc_debug;
f245e549
MCC		 60module_param(isoc_debug, int, 0644);
61MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
ad0ebb96 62
6ea54d93
DSL		 63#define em28xx_isocdbg(fmt, arg...) \
64do {\
65 if (isoc_debug) { \
ad0ebb96 66 printk(KERN_INFO "%s %s :"fmt, \
6ea54d93
DSL		 67 dev->name, __func__ , ##arg); \
68 } \
69 } while (0)
ad0ebb96 70
a6c2ba28 71MODULE_AUTHOR(DRIVER_AUTHOR);
72MODULE_DESCRIPTION(DRIVER_DESC);
73MODULE_LICENSE("GPL");
74
3acf2809 75static LIST_HEAD(em28xx_devlist);
9c75541f 76
9d4d9c05 77static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
e5589bef 78static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
0be43754
MCC		 79static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
80static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
81
596d92d5 82module_param_array(card, int, NULL, 0444);
e5589bef
MCC		 83module_param_array(video_nr, int, NULL, 0444);
84module_param_array(vbi_nr, int, NULL, 0444);
0be43754
MCC		 85module_param_array(radio_nr, int, NULL, 0444);
86MODULE_PARM_DESC(card, "card type");
87MODULE_PARM_DESC(video_nr, "video device numbers");
88MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
89MODULE_PARM_DESC(radio_nr, "radio device numbers");
596d92d5 90
ff699e6b 91static unsigned int video_debug;
6ea54d93
DSL		 92module_param(video_debug, int, 0644);
93MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
a6c2ba28 94
e5589bef
MCC		 95/* Bitmask marking allocated devices from 0 to EM28XX_MAXBOARDS */
96static unsigned long em28xx_devused;
97
a6c2ba28 98/* supported controls */
c0477ad9 99/* Common to all boards */
3acf2809 100static struct v4l2_queryctrl em28xx_qctrl[] = {
c0477ad9
MCC		 101 {
102 .id = V4L2_CID_AUDIO_VOLUME,
103 .type = V4L2_CTRL_TYPE_INTEGER,
104 .name = "Volume",
105 .minimum = 0x0,
106 .maximum = 0x1f,
107 .step = 0x1,
108 .default_value = 0x1f,
109 .flags = 0,
6ea54d93 110 }, {
c0477ad9
MCC		 111 .id = V4L2_CID_AUDIO_MUTE,
112 .type = V4L2_CTRL_TYPE_BOOLEAN,
113 .name = "Mute",
114 .minimum = 0,
115 .maximum = 1,
116 .step = 1,
117 .default_value = 1,
118 .flags = 0,
119 }
120};
121
3acf2809 122static struct usb_driver em28xx_usb_driver;
a6c2ba28 123
ad0ebb96
MCC		 124/* ------------------------------------------------------------------
125 DMA and thread functions
126 ------------------------------------------------------------------*/
127
128/*
129 * Announces that a buffer were filled and request the next
130 */
f245e549 131static inline void buffer_filled(struct em28xx *dev,
ad0ebb96
MCC		 132 struct em28xx_dmaqueue *dma_q,
133 struct em28xx_buffer *buf)
134{
ad0ebb96
MCC		 135 /* Advice that buffer was filled */
136 em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
137 buf->vb.state = VIDEOBUF_DONE;
138 buf->vb.field_count++;
139 do_gettimeofday(&buf->vb.ts);
140
cb784724
MCC		 141 dev->isoc_ctl.buf = NULL;
142
ad0ebb96
MCC		 143 list_del(&buf->vb.queue);
144 wake_up(&buf->vb.done);
145}
146
147/*
148 * Identify the buffer header type and properly handles
149 */
150static void em28xx_copy_video(struct em28xx *dev,
151 struct em28xx_dmaqueue *dma_q,
152 struct em28xx_buffer *buf,
153 unsigned char *p,
154 unsigned char *outp, unsigned long len)
155{
156 void *fieldstart, *startwrite, *startread;
f245e549 157 int linesdone, currlinedone, offset, lencopy, remain;
44dc733c 158 int bytesperline = dev->width << 1;
ad0ebb96
MCC		 159
160 if (dma_q->pos + len > buf->vb.size)
161 len = buf->vb.size - dma_q->pos;
162
d7aa8020 163 if (p[0] != 0x88 && p[0] != 0x22) {
ad0ebb96
MCC		 164 em28xx_isocdbg("frame is not complete\n");
165 len += 4;
166 } else
f245e549 167 p += 4;
ad0ebb96
MCC		 168
169 startread = p;
170 remain = len;
171
172 /* Interlaces frame */
173 if (buf->top_field)
174 fieldstart = outp;
175 else
44dc733c 176 fieldstart = outp + bytesperline;
ad0ebb96 177
44dc733c
MCC		 178 linesdone = dma_q->pos / bytesperline;
179 currlinedone = dma_q->pos % bytesperline;
180 offset = linesdone * bytesperline * 2 + currlinedone;
ad0ebb96 181 startwrite = fieldstart + offset;
44dc733c 182 lencopy = bytesperline - currlinedone;
ad0ebb96
MCC		 183 lencopy = lencopy > remain ? remain : lencopy;
184
f245e549 185 if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
ea8df7e0 186 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
f245e549
MCC		 187 ((char *)startwrite + lencopy) -
188 ((char *)outp + buf->vb.size));
189 lencopy = remain = (char *)outp + buf->vb.size - (char *)startwrite;
d7aa8020 190 }
e0fadfd3
AT		 191 if (lencopy <= 0)
192 return;
d7aa8020 193 memcpy(startwrite, startread, lencopy);
ad0ebb96
MCC		 194
195 remain -= lencopy;
196
197 while (remain > 0) {
44dc733c 198 startwrite += lencopy + bytesperline;
ad0ebb96 199 startread += lencopy;
44dc733c 200 if (bytesperline > remain)
ad0ebb96
MCC		 201 lencopy = remain;
202 else
44dc733c 203 lencopy = bytesperline;
ad0ebb96 204
f245e549 205 if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
ea8df7e0 206 em28xx_isocdbg("Overflow of %zi bytes past buffer end (2)\n",
f245e549
MCC		 207 ((char *)startwrite + lencopy) -
208 ((char *)outp + buf->vb.size));
209 lencopy = remain = (char *)outp + buf->vb.size -
210 (char *)startwrite;
d7aa8020 211 }
f245e549
MCC		 212 if (lencopy <= 0)
213 break;
d7aa8020
AT		 214
215 memcpy(startwrite, startread, lencopy);
ad0ebb96
MCC		 216
217 remain -= lencopy;
218 }
219
220 dma_q->pos += len;
221}
222
f245e549 223static inline void print_err_status(struct em28xx *dev,
ad0ebb96
MCC		 224 int packet, int status)
225{
226 char *errmsg = "Unknown";
227
f245e549 228 switch (status) {
ad0ebb96
MCC		 229 case -ENOENT:
230 errmsg = "unlinked synchronuously";
231 break;
232 case -ECONNRESET:
233 errmsg = "unlinked asynchronuously";
234 break;
235 case -ENOSR:
236 errmsg = "Buffer error (overrun)";
237 break;
238 case -EPIPE:
239 errmsg = "Stalled (device not responding)";
240 break;
241 case -EOVERFLOW:
242 errmsg = "Babble (bad cable?)";
243 break;
244 case -EPROTO:
245 errmsg = "Bit-stuff error (bad cable?)";
246 break;
247 case -EILSEQ:
248 errmsg = "CRC/Timeout (could be anything)";
249 break;
250 case -ETIME:
251 errmsg = "Device does not respond";
252 break;
253 }
f245e549 254 if (packet < 0) {
ad0ebb96
MCC		 255 em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
256 } else {
257 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
258 packet, status, errmsg);
259 }
260}
261
262/*
263 * video-buf generic routine to get the next available buffer
264 */
3b5fa928 265static inline void get_next_buf(struct em28xx_dmaqueue *dma_q,
ad0ebb96
MCC		 266 struct em28xx_buffer **buf)
267{
268 struct em28xx *dev = container_of(dma_q, struct em28xx, vidq);
dbecb44c 269 char *outp;
ad0ebb96 270
dbecb44c
MCC		 271 if (list_empty(&dma_q->active)) {
272 em28xx_isocdbg("No active queue to serve\n");
dbecb44c
MCC		 273 dev->isoc_ctl.buf = NULL;
274 *buf = NULL;
3b5fa928 275 return;
dbecb44c
MCC		 276 }
277
dbecb44c
MCC		 278 /* Get the next buffer */
279 *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
280
dbecb44c
MCC		 281 /* Cleans up buffer - Usefull for testing for frame/URB loss */
282 outp = videobuf_to_vmalloc(&(*buf)->vb);
283 memset(outp, 0, (*buf)->vb.size);
cb784724
MCC		 284
285 dev->isoc_ctl.buf = *buf;
286
3b5fa928 287 return;
ad0ebb96
MCC		 288}
289
290/*
291 * Controls the isoc copy of each urb packet
292 */
579f72e4 293static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb)
ad0ebb96 294{
d7aa8020 295 struct em28xx_buffer *buf;
ad0ebb96 296 struct em28xx_dmaqueue *dma_q = urb->context;
3b5fa928 297 unsigned char *outp = NULL;
ad0ebb96 298 int i, len = 0, rc = 1;
d7aa8020 299 unsigned char *p;
ad0ebb96
MCC		 300
301 if (!dev)
302 return 0;
303
304 if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
305 return 0;
306
f245e549
MCC		 307 if (urb->status < 0) {
308 print_err_status(dev, -1, urb->status);
ad0ebb96
MCC		 309 if (urb->status == -ENOENT)
310 return 0;
311 }
312
3b5fa928
AT		 313 buf = dev->isoc_ctl.buf;
314 if (buf != NULL)
315 outp = videobuf_to_vmalloc(&buf->vb);
d7aa8020 316
ad0ebb96
MCC		 317 for (i = 0; i < urb->number_of_packets; i++) {
318 int status = urb->iso_frame_desc[i].status;
319
f245e549
MCC		 320 if (status < 0) {
321 print_err_status(dev, i, status);
ad0ebb96
MCC		 322 if (urb->iso_frame_desc[i].status != -EPROTO)
323 continue;
324 }
325
f245e549 326 len = urb->iso_frame_desc[i].actual_length - 4;
ad0ebb96
MCC		 327
328 if (urb->iso_frame_desc[i].actual_length <= 0) {
d7aa8020 329 /* em28xx_isocdbg("packet %d is empty",i); - spammy */
ad0ebb96
MCC		 330 continue;
331 }
332 if (urb->iso_frame_desc[i].actual_length >
333 dev->max_pkt_size) {
334 em28xx_isocdbg("packet bigger than packet size");
335 continue;
336 }
337
338 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
ad0ebb96
MCC		 339
340 /* FIXME: incomplete buffer checks where removed to make
341 logic simpler. Impacts of those changes should be evaluated
342 */
b4916f8c
MCC		 343 if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) {
344 em28xx_isocdbg("VBI HEADER!!!\n");
345 /* FIXME: Should add vbi copy */
346 continue;
347 }
d7aa8020 348 if (p[0] == 0x22 && p[1] == 0x5a) {
78bb3949
MCC		 349 em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
350 len, (p[2] & 1)? "odd" : "even");
d7aa8020 351
3b5fa928
AT		 352 if (!(p[2] & 1)) {
353 if (buf != NULL)
354 buffer_filled(dev, dma_q, buf);
355 get_next_buf(dma_q, &buf);
356 if (buf == NULL)
357 outp = NULL;
358 else
359 outp = videobuf_to_vmalloc(&buf->vb);
360 }
361
362 if (buf != NULL) {
363 if (p[2] & 1)
364 buf->top_field = 0;
365 else
366 buf->top_field = 1;
e0fadfd3 367 }
b4916f8c 368
ad0ebb96 369 dma_q->pos = 0;
ad0ebb96 370 }
3b5fa928
AT		 371 if (buf != NULL)
372 em28xx_copy_video(dev, dma_q, buf, p, outp, len);
ad0ebb96
MCC		 373 }
374 return rc;
375}
376
ad0ebb96
MCC		 377/* ------------------------------------------------------------------
378 Videobuf operations
379 ------------------------------------------------------------------*/
380
381static int
382buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
383{
384 struct em28xx_fh *fh = vq->priv_data;
d2d9fbfd
MCC		 385 struct em28xx *dev = fh->dev;
386 struct v4l2_frequency f;
ad0ebb96 387
d7aa8020 388 *size = 16 * fh->dev->width * fh->dev->height >> 3;
ad0ebb96
MCC		 389 if (0 == *count)
390 *count = EM28XX_DEF_BUF;
391
f245e549
MCC		 392 if (*count < EM28XX_MIN_BUF)
393 *count = EM28XX_MIN_BUF;
ad0ebb96 394
d2d9fbfd 395 /* Ask tuner to go to analog mode */
6ea54d93 396 memset(&f, 0, sizeof(f));
d2d9fbfd
MCC		 397 f.frequency = dev->ctl_freq;
398
399 em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, &f);
400
ad0ebb96
MCC		 401 return 0;
402}
403
3b5fa928 404/* This is called *without* dev->slock held; please keep it that way */
ad0ebb96
MCC		 405static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
406{
3b5fa928
AT		 407 struct em28xx_fh *fh = vq->priv_data;
408 struct em28xx *dev = fh->dev;
409 unsigned long flags = 0;
ad0ebb96
MCC		 410 if (in_interrupt())
411 BUG();
412
3b5fa928
AT		 413 /* We used to wait for the buffer to finish here, but this didn't work
414 because, as we were keeping the state as VIDEOBUF_QUEUED,
415 videobuf_queue_cancel marked it as finished for us.
416 (Also, it could wedge forever if the hardware was misconfigured.)
417
418 This should be safe; by the time we get here, the buffer isn't
419 queued anymore. If we ever start marking the buffers as
420 VIDEOBUF_ACTIVE, it won't be, though.
421 */
422 spin_lock_irqsave(&dev->slock, flags);
423 if (dev->isoc_ctl.buf == buf)
424 dev->isoc_ctl.buf = NULL;
425 spin_unlock_irqrestore(&dev->slock, flags);
426
ad0ebb96
MCC		 427 videobuf_vmalloc_free(&buf->vb);
428 buf->vb.state = VIDEOBUF_NEEDS_INIT;
429}
430
431static int
432buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
433 enum v4l2_field field)
434{
435 struct em28xx_fh *fh = vq->priv_data;
f245e549 436 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
ad0ebb96
MCC		 437 struct em28xx *dev = fh->dev;
438 int rc = 0, urb_init = 0;
ad0ebb96 439
ad0ebb96
MCC		 440 /* FIXME: It assumes depth = 16 */
441 /* The only currently supported format is 16 bits/pixel */
d7aa8020 442 buf->vb.size = 16 * dev->width * dev->height >> 3;
ad0ebb96
MCC		 443
444 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
445 return -EINVAL;
446
05612975
BP		 447 buf->vb.width = dev->width;
448 buf->vb.height = dev->height;
449 buf->vb.field = field;
ad0ebb96
MCC		 450
451 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
d7aa8020
AT		 452 rc = videobuf_iolock(vq, &buf->vb, NULL);
453 if (rc < 0)
ad0ebb96 454 goto fail;
ad0ebb96
MCC		 455 }
456
ad0ebb96 457 if (!dev->isoc_ctl.num_bufs)
f245e549 458 urb_init = 1;
ad0ebb96
MCC		 459
460 if (urb_init) {
579f72e4
AT		 461 rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
462 EM28XX_NUM_BUFS, dev->max_pkt_size,
c67ec53f 463 em28xx_isoc_copy);
f245e549 464 if (rc < 0)
ad0ebb96
MCC		 465 goto fail;
466 }
467
468 buf->vb.state = VIDEOBUF_PREPARED;
469 return 0;
470
471fail:
f245e549 472 free_buffer(vq, buf);
ad0ebb96
MCC		 473 return rc;
474}
475
476static void
477buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
478{
479 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
480 struct em28xx_fh *fh = vq->priv_data;
f245e549 481 struct em28xx *dev = fh->dev;
ad0ebb96 482 struct em28xx_dmaqueue *vidq = &dev->vidq;
ad0ebb96 483
d7aa8020
AT		 484 buf->vb.state = VIDEOBUF_QUEUED;
485 list_add_tail(&buf->vb.queue, &vidq->active);
486
ad0ebb96
MCC		 487}
488
6ea54d93
DSL		 489static void buffer_release(struct videobuf_queue *vq,
490 struct videobuf_buffer *vb)
ad0ebb96 491{
f245e549 492 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
ad0ebb96 493 struct em28xx_fh *fh = vq->priv_data;
f245e549 494 struct em28xx *dev = (struct em28xx *)fh->dev;
ad0ebb96 495
d7aa8020 496 em28xx_isocdbg("em28xx: called buffer_release\n");
ad0ebb96 497
f245e549 498 free_buffer(vq, buf);
ad0ebb96
MCC		 499}
500
501static struct videobuf_queue_ops em28xx_video_qops = {
502 .buf_setup = buffer_setup,
503 .buf_prepare = buffer_prepare,
504 .buf_queue = buffer_queue,
505 .buf_release = buffer_release,
506};
a6c2ba28 507
6ea54d93 508/********************* v4l2 interface **************************************/
a6c2ba28 509
a6c2ba28 510/*
3acf2809 511 * em28xx_config()
a6c2ba28 512 * inits registers with sane defaults
513 */
3acf2809 514static int em28xx_config(struct em28xx *dev)
a6c2ba28 515{
516
517 /* Sets I2C speed to 100 KHz */
2b2c93ac
SS		 518 if (!dev->is_em2800)
519 em28xx_write_regs_req(dev, 0x00, 0x06, "\x40", 1);
a6c2ba28 520
521 /* enable vbi capturing */
e5589bef 522
6ea54d93
DSL		 523/* em28xx_write_regs_req(dev, 0x00, 0x0e, "\xC0", 1); audio register */
524/* em28xx_write_regs_req(dev, 0x00, 0x0f, "\x80", 1); clk register */
525 em28xx_write_regs_req(dev, 0x00, 0x11, "\x51", 1);
e5589bef 526
a6c2ba28 527 dev->mute = 1; /* maybe not the right place... */
528 dev->volume = 0x1f;
539c96d0 529
3acf2809
MCC		 530 em28xx_outfmt_set_yuv422(dev);
531 em28xx_colorlevels_set_default(dev);
532 em28xx_compression_disable(dev);
a6c2ba28 533
534 return 0;
535}
536
537/*
3acf2809 538 * em28xx_config_i2c()
a6c2ba28 539 * configure i2c attached devices
540 */
943a4902 541static void em28xx_config_i2c(struct em28xx *dev)
a6c2ba28 542{
c7c0b34c
HV		 543 struct v4l2_routing route;
544
545 route.input = INPUT(dev->ctl_input)->vmux;
546 route.output = 0;
663d1ba2 547 em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, NULL);
c7c0b34c 548 em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
f5762e44 549 em28xx_i2c_call_clients(dev, VIDIOC_STREAMON, NULL);
a6c2ba28 550}
551
eac94356
MCC		 552static void video_mux(struct em28xx *dev, int index)
553{
c7c0b34c 554 struct v4l2_routing route;
eac94356 555
c7c0b34c
HV		 556 route.input = INPUT(index)->vmux;
557 route.output = 0;
eac94356
MCC		 558 dev->ctl_input = index;
559 dev->ctl_ainput = INPUT(index)->amux;
560
c7c0b34c 561 em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
eac94356 562
eac94356 563 if (dev->has_msp34xx) {
6ea54d93
DSL		 564 if (dev->i2s_speed) {
565 em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ,
566 &dev->i2s_speed);
567 }
2474ed44 568 route.input = dev->ctl_ainput;
07151724 569 route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
2474ed44 570 /* Note: this is msp3400 specific */
6ea54d93
DSL		 571 em28xx_i2c_call_clients(dev, VIDIOC_INT_S_AUDIO_ROUTING,
572 &route);
eac94356 573 }
539c96d0 574
00b8730f 575 em28xx_audio_analog_set(dev);
eac94356
MCC		 576}
577
a225452e
MCC		 578/* Usage lock check functions */
579static int res_get(struct em28xx_fh *fh)
580{
581 struct em28xx *dev = fh->dev;
582 int rc = 0;
583
584 /* This instance already has stream_on */
585 if (fh->stream_on)
586 return rc;
587
a225452e 588 if (dev->stream_on)
e74153d4 589 return -EINVAL;
a225452e 590
e74153d4
MCC		 591 mutex_lock(&dev->lock);
592 dev->stream_on = 1;
593 fh->stream_on = 1;
a225452e
MCC		 594 mutex_unlock(&dev->lock);
595 return rc;
596}
597
598static int res_check(struct em28xx_fh *fh)
599{
600 return (fh->stream_on);
601}
602
603static void res_free(struct em28xx_fh *fh)
604{
605 struct em28xx *dev = fh->dev;
606
607 mutex_lock(&dev->lock);
608 fh->stream_on = 0;
609 dev->stream_on = 0;
610 mutex_unlock(&dev->lock);
611}
612
195a4ef6
MCC		 613/*
614 * em28xx_get_ctrl()
615 * return the current saturation, brightness or contrast, mute state
616 */
617static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
618{
619 switch (ctrl->id) {
620 case V4L2_CID_AUDIO_MUTE:
621 ctrl->value = dev->mute;
622 return 0;
623 case V4L2_CID_AUDIO_VOLUME:
624 ctrl->value = dev->volume;
625 return 0;
626 default:
627 return -EINVAL;
a6c2ba28 628 }
195a4ef6 629}
a6c2ba28 630
195a4ef6
MCC		 631/*
632 * em28xx_set_ctrl()
633 * mute or set new saturation, brightness or contrast
634 */
635static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
636{
637 switch (ctrl->id) {
638 case V4L2_CID_AUDIO_MUTE:
639 if (ctrl->value != dev->mute) {
640 dev->mute = ctrl->value;
195a4ef6
MCC		 641 return em28xx_audio_analog_set(dev);
642 }
643 return 0;
644 case V4L2_CID_AUDIO_VOLUME:
645 dev->volume = ctrl->value;
646 return em28xx_audio_analog_set(dev);
647 default:
648 return -EINVAL;
649 }
650}
a6c2ba28 651
195a4ef6
MCC		 652static int check_dev(struct em28xx *dev)
653{
654 if (dev->state & DEV_DISCONNECTED) {
655 em28xx_errdev("v4l2 ioctl: device not present\n");
656 return -ENODEV;
e5589bef 657 }
a6c2ba28 658
195a4ef6
MCC		 659 if (dev->state & DEV_MISCONFIGURED) {
660 em28xx_errdev("v4l2 ioctl: device is misconfigured; "
661 "close and open it again\n");
662 return -EIO;
663 }
664 return 0;
665}
a6c2ba28 666
195a4ef6
MCC		 667static void get_scale(struct em28xx *dev,
668 unsigned int width, unsigned int height,
669 unsigned int *hscale, unsigned int *vscale)
670{
671 unsigned int maxw = norm_maxw(dev);
672 unsigned int maxh = norm_maxh(dev);
673
674 *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
675 if (*hscale >= 0x4000)
676 *hscale = 0x3fff;
677
678 *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
679 if (*vscale >= 0x4000)
680 *vscale = 0x3fff;
a6c2ba28 681}
682
195a4ef6
MCC		 683/* ------------------------------------------------------------------
684 IOCTL vidioc handling
685 ------------------------------------------------------------------*/
686
78b526a4 687static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
195a4ef6 688 struct v4l2_format *f)
a6c2ba28 689{
195a4ef6
MCC		 690 struct em28xx_fh *fh = priv;
691 struct em28xx *dev = fh->dev;
a6c2ba28 692
195a4ef6 693 mutex_lock(&dev->lock);
e5589bef 694
195a4ef6
MCC		 695 f->fmt.pix.width = dev->width;
696 f->fmt.pix.height = dev->height;
697 f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
44dc733c
MCC		 698 f->fmt.pix.bytesperline = dev->width * 2;
699 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
195a4ef6 700 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
e5589bef 701
195a4ef6
MCC		 702 /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
703 f->fmt.pix.field = dev->interlaced ?
704 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
e5589bef 705
195a4ef6
MCC		 706 mutex_unlock(&dev->lock);
707 return 0;
a6c2ba28 708}
709
78b526a4 710static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
195a4ef6 711 struct v4l2_format *f)
a6c2ba28 712{
195a4ef6
MCC		 713 struct em28xx_fh *fh = priv;
714 struct em28xx *dev = fh->dev;
715 int width = f->fmt.pix.width;
716 int height = f->fmt.pix.height;
717 unsigned int maxw = norm_maxw(dev);
718 unsigned int maxh = norm_maxh(dev);
719 unsigned int hscale, vscale;
720
721 /* width must even because of the YUYV format
722 height must be even because of interlacing */
723 height &= 0xfffe;
724 width &= 0xfffe;
a6c2ba28 725
195a4ef6
MCC		 726 if (height < 32)
727 height = 32;
728 if (height > maxh)
729 height = maxh;
730 if (width < 48)
731 width = 48;
732 if (width > maxw)
733 width = maxw;
a6c2ba28 734
195a4ef6 735 mutex_lock(&dev->lock);
a225452e 736
195a4ef6
MCC		 737 if (dev->is_em2800) {
738 /* the em2800 can only scale down to 50% */
739 if (height % (maxh / 2))
740 height = maxh;
741 if (width % (maxw / 2))
742 width = maxw;
743 /* according to empiatech support */
744 /* the MaxPacketSize is to small to support */
745 /* framesizes larger than 640x480 @ 30 fps */
746 /* or 640x576 @ 25 fps. As this would cut */
747 /* of a part of the image we prefer */
748 /* 360x576 or 360x480 for now */
749 if (width == maxw && height == maxh)
750 width /= 2;
751 }
a225452e 752
195a4ef6 753 get_scale(dev, width, height, &hscale, &vscale);
a6c2ba28 754
195a4ef6
MCC		 755 width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
756 height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
a6c2ba28 757
195a4ef6
MCC		 758 f->fmt.pix.width = width;
759 f->fmt.pix.height = height;
760 f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
761 f->fmt.pix.bytesperline = width * 2;
762 f->fmt.pix.sizeimage = width * 2 * height;
763 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
764 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
a6c2ba28 765
3593cab5 766 mutex_unlock(&dev->lock);
a6c2ba28 767 return 0;
768}
769
78b526a4 770static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
195a4ef6 771 struct v4l2_format *f)
a6c2ba28 772{
195a4ef6
MCC		 773 struct em28xx_fh *fh = priv;
774 struct em28xx *dev = fh->dev;
ad0ebb96 775 int rc;
a6c2ba28 776
195a4ef6
MCC		 777 rc = check_dev(dev);
778 if (rc < 0)
779 return rc;
a225452e 780
78b526a4 781 vidioc_try_fmt_vid_cap(file, priv, f);
a225452e 782
5a80415b
SS		 783 mutex_lock(&dev->lock);
784
05612975
BP		 785 if (videobuf_queue_is_busy(&fh->vb_vidq)) {
786 em28xx_errdev("%s queue busy\n", __func__);
787 rc = -EBUSY;
788 goto out;
789 }
790
0ea13e6e
AT		 791 if (dev->stream_on && !fh->stream_on) {
792 em28xx_errdev("%s device in use by another fh\n", __func__);
793 rc = -EBUSY;
794 goto out;
795 }
796
195a4ef6
MCC		 797 /* set new image size */
798 dev->width = f->fmt.pix.width;
799 dev->height = f->fmt.pix.height;
195a4ef6 800 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
a6c2ba28 801
195a4ef6 802 em28xx_set_alternate(dev);
195a4ef6 803 em28xx_resolution_set(dev);
195a4ef6 804
05612975
BP		 805 rc = 0;
806
807out:
195a4ef6 808 mutex_unlock(&dev->lock);
05612975 809 return rc;
195a4ef6
MCC		 810}
811
6ea54d93 812static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id * norm)
195a4ef6
MCC		 813{
814 struct em28xx_fh *fh = priv;
815 struct em28xx *dev = fh->dev;
816 struct v4l2_format f;
195a4ef6
MCC		 817 int rc;
818
819 rc = check_dev(dev);
820 if (rc < 0)
821 return rc;
822
195a4ef6 823 mutex_lock(&dev->lock);
7d497f8a 824 dev->norm = *norm;
195a4ef6 825 mutex_unlock(&dev->lock);
a6c2ba28 826
195a4ef6
MCC		 827 /* Adjusts width/height, if needed */
828 f.fmt.pix.width = dev->width;
829 f.fmt.pix.height = dev->height;
78b526a4 830 vidioc_try_fmt_vid_cap(file, priv, &f);
a6c2ba28 831
195a4ef6 832 mutex_lock(&dev->lock);
a6c2ba28 833
195a4ef6
MCC		 834 /* set new image size */
835 dev->width = f.fmt.pix.width;
836 dev->height = f.fmt.pix.height;
195a4ef6 837 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
a6c2ba28 838
195a4ef6 839 em28xx_resolution_set(dev);
7d497f8a 840 em28xx_i2c_call_clients(dev, VIDIOC_S_STD, &dev->norm);
a6c2ba28 841
195a4ef6
MCC		 842 mutex_unlock(&dev->lock);
843 return 0;
844}
9e31ced8 845
195a4ef6
MCC		 846static const char *iname[] = {
847 [EM28XX_VMUX_COMPOSITE1] = "Composite1",
848 [EM28XX_VMUX_COMPOSITE2] = "Composite2",
849 [EM28XX_VMUX_COMPOSITE3] = "Composite3",
850 [EM28XX_VMUX_COMPOSITE4] = "Composite4",
851 [EM28XX_VMUX_SVIDEO] = "S-Video",
852 [EM28XX_VMUX_TELEVISION] = "Television",
853 [EM28XX_VMUX_CABLE] = "Cable TV",
854 [EM28XX_VMUX_DVB] = "DVB",
855 [EM28XX_VMUX_DEBUG] = "for debug only",
856};
9e31ced8 857
195a4ef6
MCC		 858static int vidioc_enum_input(struct file *file, void *priv,
859 struct v4l2_input *i)
860{
861 struct em28xx_fh *fh = priv;
862 struct em28xx *dev = fh->dev;
863 unsigned int n;
9e31ced8 864
195a4ef6
MCC		 865 n = i->index;
866 if (n >= MAX_EM28XX_INPUT)
867 return -EINVAL;
868 if (0 == INPUT(n)->type)
869 return -EINVAL;
9e31ced8 870
195a4ef6
MCC		 871 i->index = n;
872 i->type = V4L2_INPUT_TYPE_CAMERA;
a6c2ba28 873
195a4ef6 874 strcpy(i->name, iname[INPUT(n)->type]);
a6c2ba28 875
195a4ef6
MCC		 876 if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
877 (EM28XX_VMUX_CABLE == INPUT(n)->type))
878 i->type = V4L2_INPUT_TYPE_TUNER;
879
7d497f8a 880 i->std = dev->vdev->tvnorms;
195a4ef6
MCC		 881
882 return 0;
a6c2ba28 883}
884
195a4ef6 885static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
a6c2ba28 886{
195a4ef6
MCC		 887 struct em28xx_fh *fh = priv;
888 struct em28xx *dev = fh->dev;
a6c2ba28 889
195a4ef6
MCC		 890 *i = dev->ctl_input;
891
892 return 0;
893}
894
895static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
896{
897 struct em28xx_fh *fh = priv;
898 struct em28xx *dev = fh->dev;
899 int rc;
900
901 rc = check_dev(dev);
902 if (rc < 0)
903 return rc;
904
905 if (i >= MAX_EM28XX_INPUT)
906 return -EINVAL;
907 if (0 == INPUT(i)->type)
908 return -EINVAL;
a225452e 909
5a80415b 910 mutex_lock(&dev->lock);
a6c2ba28 911
195a4ef6
MCC		 912 video_mux(dev, i);
913
914 mutex_unlock(&dev->lock);
915 return 0;
916}
917
918static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
919{
920 struct em28xx_fh *fh = priv;
921 struct em28xx *dev = fh->dev;
922 unsigned int index = a->index;
923
924 if (a->index > 1)
925 return -EINVAL;
926
927 index = dev->ctl_ainput;
928
6ea54d93 929 if (index == 0)
195a4ef6 930 strcpy(a->name, "Television");
6ea54d93 931 else
195a4ef6 932 strcpy(a->name, "Line In");
6ea54d93 933
195a4ef6
MCC		 934 a->capability = V4L2_AUDCAP_STEREO;
935 a->index = index;
936
937 return 0;
938}
939
940static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
941{
942 struct em28xx_fh *fh = priv;
943 struct em28xx *dev = fh->dev;
944
945 if (a->index != dev->ctl_ainput)
946 return -EINVAL;
947
948 return 0;
949}
950
951static int vidioc_queryctrl(struct file *file, void *priv,
952 struct v4l2_queryctrl *qc)
953{
954 struct em28xx_fh *fh = priv;
955 struct em28xx *dev = fh->dev;
956 int id = qc->id;
957 int i;
958 int rc;
959
960 rc = check_dev(dev);
961 if (rc < 0)
962 return rc;
963
964 memset(qc, 0, sizeof(*qc));
965
966 qc->id = id;
967
968 if (!dev->has_msp34xx) {
969 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
970 if (qc->id && qc->id == em28xx_qctrl[i].id) {
971 memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
972 return 0;
a6c2ba28 973 }
974 }
195a4ef6
MCC		 975 }
976 mutex_lock(&dev->lock);
977 em28xx_i2c_call_clients(dev, VIDIOC_QUERYCTRL, qc);
978 mutex_unlock(&dev->lock);
a6c2ba28 979
195a4ef6
MCC		 980 if (qc->type)
981 return 0;
982 else
983 return -EINVAL;
984}
a6c2ba28 985
195a4ef6
MCC		 986static int vidioc_g_ctrl(struct file *file, void *priv,
987 struct v4l2_control *ctrl)
988{
989 struct em28xx_fh *fh = priv;
990 struct em28xx *dev = fh->dev;
991 int rc;
a6c2ba28 992
195a4ef6
MCC		 993 rc = check_dev(dev);
994 if (rc < 0)
995 return rc;
996 mutex_lock(&dev->lock);
a6c2ba28 997
195a4ef6
MCC		 998 if (!dev->has_msp34xx)
999 rc = em28xx_get_ctrl(dev, ctrl);
1000 else
1001 rc = -EINVAL;
1002
1003 if (rc == -EINVAL) {
1004 em28xx_i2c_call_clients(dev, VIDIOC_G_CTRL, ctrl);
1005 rc = 0;
1006 }
1007
1008 mutex_unlock(&dev->lock);
1009 return rc;
1010}
1011
1012static int vidioc_s_ctrl(struct file *file, void *priv,
1013 struct v4l2_control *ctrl)
1014{
1015 struct em28xx_fh *fh = priv;
1016 struct em28xx *dev = fh->dev;
1017 u8 i;
1018 int rc;
1019
1020 rc = check_dev(dev);
1021 if (rc < 0)
1022 return rc;
1023
1024 mutex_lock(&dev->lock);
1025
1026 if (dev->has_msp34xx)
1027 em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl);
1028 else {
1029 rc = 1;
1030 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1031 if (ctrl->id == em28xx_qctrl[i].id) {
1032 if (ctrl->value < em28xx_qctrl[i].minimum ||
1033 ctrl->value > em28xx_qctrl[i].maximum) {
1034 rc = -ERANGE;
1035 break;
1036 }
1037
1038 rc = em28xx_set_ctrl(dev, ctrl);
1039 break;
1040 }
a6c2ba28 1041 }
1042 }
1043
195a4ef6
MCC		 1044 /* Control not found - try to send it to the attached devices */
1045 if (rc == 1) {
1046 em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl);
1047 rc = 0;
1048 }
1049
5a80415b 1050 mutex_unlock(&dev->lock);
195a4ef6 1051 return rc;
a6c2ba28 1052}
1053
195a4ef6
MCC		 1054static int vidioc_g_tuner(struct file *file, void *priv,
1055 struct v4l2_tuner *t)
a6c2ba28 1056{
195a4ef6
MCC		 1057 struct em28xx_fh *fh = priv;
1058 struct em28xx *dev = fh->dev;
1059 int rc;
1060
1061 rc = check_dev(dev);
1062 if (rc < 0)
1063 return rc;
1064
1065 if (0 != t->index)
1066 return -EINVAL;
1067
1068 strcpy(t->name, "Tuner");
1069
1070 mutex_lock(&dev->lock);
1071
1072 em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t);
1073
1074 mutex_unlock(&dev->lock);
1075 return 0;
a6c2ba28 1076}
1077
195a4ef6
MCC		 1078static int vidioc_s_tuner(struct file *file, void *priv,
1079 struct v4l2_tuner *t)
a6c2ba28 1080{
195a4ef6
MCC		 1081 struct em28xx_fh *fh = priv;
1082 struct em28xx *dev = fh->dev;
1083 int rc;
63337dd3 1084
195a4ef6
MCC		 1085 rc = check_dev(dev);
1086 if (rc < 0)
1087 return rc;
1088
1089 if (0 != t->index)
1090 return -EINVAL;
1091
1092 mutex_lock(&dev->lock);
1093
1094 em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t);
1095
1096 mutex_unlock(&dev->lock);
1097 return 0;
a6c2ba28 1098}
1099
195a4ef6
MCC		 1100static int vidioc_g_frequency(struct file *file, void *priv,
1101 struct v4l2_frequency *f)
1102{
1103 struct em28xx_fh *fh = priv;
1104 struct em28xx *dev = fh->dev;
a6c2ba28 1105
0be43754 1106 f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
195a4ef6
MCC		 1107 f->frequency = dev->ctl_freq;
1108
1109 return 0;
1110}
1111
1112static int vidioc_s_frequency(struct file *file, void *priv,
1113 struct v4l2_frequency *f)
a6c2ba28 1114{
195a4ef6
MCC		 1115 struct em28xx_fh *fh = priv;
1116 struct em28xx *dev = fh->dev;
1117 int rc;
9c75541f 1118
195a4ef6
MCC		 1119 rc = check_dev(dev);
1120 if (rc < 0)
1121 return rc;
1122
1123 if (0 != f->tuner)
1124 return -EINVAL;
1125
0be43754
MCC		 1126 if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1127 return -EINVAL;
1128 if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
195a4ef6 1129 return -EINVAL;
a225452e
MCC		 1130
1131 mutex_lock(&dev->lock);
a3a048ce 1132
195a4ef6
MCC		 1133 dev->ctl_freq = f->frequency;
1134 em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f);
a6c2ba28 1135
195a4ef6
MCC		 1136 mutex_unlock(&dev->lock);
1137 return 0;
1138}
a6c2ba28 1139
1e7ad56f
MCC		 1140#ifdef CONFIG_VIDEO_ADV_DEBUG
1141static int em28xx_reg_len(int reg)
1142{
1143 switch (reg) {
41facaa4
MCC		 1144 case EM28XX_R40_AC97LSB:
1145 case EM28XX_R30_HSCALELOW:
1146 case EM28XX_R32_VSCALELOW:
1e7ad56f
MCC		 1147 return 2;
1148 default:
1149 return 1;
1150 }
1151}
1152
1153static int vidioc_g_register(struct file *file, void *priv,
1154 struct v4l2_register *reg)
1155{
1156 struct em28xx_fh *fh = priv;
1157 struct em28xx *dev = fh->dev;
1158 int ret;
1159
1160 if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
1161 return -EINVAL;
1162
1163 if (em28xx_reg_len(reg->reg) == 1) {
1164 ret = em28xx_read_reg(dev, reg->reg);
1165 if (ret < 0)
1166 return ret;
1167
1168 reg->val = ret;
1169 } else {
a954b668 1170 __le64 val = 0;
1e7ad56f
MCC		 1171 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1172 reg->reg, (char *)&val, 2);
1173 if (ret < 0)
1174 return ret;
1175
a954b668 1176 reg->val = le64_to_cpu(val);
1e7ad56f
MCC		 1177 }
1178
1179 return 0;
1180}
1181
1182static int vidioc_s_register(struct file *file, void *priv,
1183 struct v4l2_register *reg)
1184{
1185 struct em28xx_fh *fh = priv;
1186 struct em28xx *dev = fh->dev;
a954b668 1187 __le64 buf;
1e7ad56f 1188
a954b668 1189 buf = cpu_to_le64(reg->val);
1e7ad56f
MCC		 1190
1191 return em28xx_write_regs(dev, reg->reg, (char *)&buf,
1192 em28xx_reg_len(reg->reg));
1193}
1194#endif
1195
1196
195a4ef6
MCC		 1197static int vidioc_cropcap(struct file *file, void *priv,
1198 struct v4l2_cropcap *cc)
1199{
1200 struct em28xx_fh *fh = priv;
1201 struct em28xx *dev = fh->dev;
1202
1203 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
a6c2ba28 1204 return -EINVAL;
a6c2ba28 1205
195a4ef6
MCC		 1206 cc->bounds.left = 0;
1207 cc->bounds.top = 0;
1208 cc->bounds.width = dev->width;
1209 cc->bounds.height = dev->height;
1210 cc->defrect = cc->bounds;
1211 cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1212 cc->pixelaspect.denominator = 59;
1213
1214 return 0;
1215}
1216
1217static int vidioc_streamon(struct file *file, void *priv,
1218 enum v4l2_buf_type type)
1219{
1220 struct em28xx_fh *fh = priv;
1221 struct em28xx *dev = fh->dev;
1222 int rc;
1223
1224 rc = check_dev(dev);
1225 if (rc < 0)
1226 return rc;
1227
195a4ef6 1228
ad0ebb96 1229 if (unlikely(res_get(fh) < 0))
195a4ef6 1230 return -EBUSY;
a6c2ba28 1231
ad0ebb96 1232 return (videobuf_streamon(&fh->vb_vidq));
195a4ef6
MCC		 1233}
1234
1235static int vidioc_streamoff(struct file *file, void *priv,
1236 enum v4l2_buf_type type)
1237{
1238 struct em28xx_fh *fh = priv;
1239 struct em28xx *dev = fh->dev;
1240 int rc;
1241
1242 rc = check_dev(dev);
1243 if (rc < 0)
1244 return rc;
1245
ad0ebb96
MCC		 1246 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1247 return -EINVAL;
1248 if (type != fh->type)
195a4ef6
MCC		 1249 return -EINVAL;
1250
ad0ebb96
MCC		 1251 videobuf_streamoff(&fh->vb_vidq);
1252 res_free(fh);
a6c2ba28 1253
a6c2ba28 1254 return 0;
1255}
1256
195a4ef6
MCC		 1257static int vidioc_querycap(struct file *file, void *priv,
1258 struct v4l2_capability *cap)
a6c2ba28 1259{
195a4ef6
MCC		 1260 struct em28xx_fh *fh = priv;
1261 struct em28xx *dev = fh->dev;
1262
1263 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1264 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1265 strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info));
1266
1267 cap->version = EM28XX_VERSION_CODE;
1268
1269 cap->capabilities =
1270 V4L2_CAP_SLICED_VBI_CAPTURE |
1271 V4L2_CAP_VIDEO_CAPTURE |
1272 V4L2_CAP_AUDIO |
1273 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1274
ed086314 1275 if (dev->tuner_type != TUNER_ABSENT)
195a4ef6
MCC		 1276 cap->capabilities |= V4L2_CAP_TUNER;
1277
1278 return 0;
c0477ad9
MCC		 1279}
1280
78b526a4 1281static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
195a4ef6 1282 struct v4l2_fmtdesc *fmtd)
a6c2ba28 1283{
195a4ef6 1284 if (fmtd->index != 0)
c0477ad9 1285 return -EINVAL;
195a4ef6
MCC		 1286
1287 fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1288 strcpy(fmtd->description, "Packed YUY2");
1289 fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
1290 memset(fmtd->reserved, 0, sizeof(fmtd->reserved));
1291
1292 return 0;
c0477ad9
MCC		 1293}
1294
195a4ef6 1295/* Sliced VBI ioctls */
78b526a4 1296static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
195a4ef6 1297 struct v4l2_format *f)
a6c2ba28 1298{
195a4ef6
MCC		 1299 struct em28xx_fh *fh = priv;
1300 struct em28xx *dev = fh->dev;
1301 int rc;
a6c2ba28 1302
195a4ef6
MCC		 1303 rc = check_dev(dev);
1304 if (rc < 0)
1305 return rc;
a6c2ba28 1306
195a4ef6
MCC		 1307 mutex_lock(&dev->lock);
1308
1309 f->fmt.sliced.service_set = 0;
1310
1311 em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f);
1312
1313 if (f->fmt.sliced.service_set == 0)
1314 rc = -EINVAL;
1315
1316 mutex_unlock(&dev->lock);
1317 return rc;
1318}
1319
78b526a4 1320static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
195a4ef6
MCC		 1321 struct v4l2_format *f)
1322{
1323 struct em28xx_fh *fh = priv;
1324 struct em28xx *dev = fh->dev;
1325 int rc;
1326
1327 rc = check_dev(dev);
1328 if (rc < 0)
1329 return rc;
1330
1331 mutex_lock(&dev->lock);
1332 em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f);
1333 mutex_unlock(&dev->lock);
1334
1335 if (f->fmt.sliced.service_set == 0)
1336 return -EINVAL;
a6c2ba28 1337
1338 return 0;
1339}
1340
195a4ef6
MCC		 1341
1342static int vidioc_reqbufs(struct file *file, void *priv,
1343 struct v4l2_requestbuffers *rb)
a6c2ba28 1344{
195a4ef6
MCC		 1345 struct em28xx_fh *fh = priv;
1346 struct em28xx *dev = fh->dev;
195a4ef6 1347 int rc;
a6c2ba28 1348
195a4ef6
MCC		 1349 rc = check_dev(dev);
1350 if (rc < 0)
1351 return rc;
a6c2ba28 1352
ad0ebb96 1353 return (videobuf_reqbufs(&fh->vb_vidq, rb));
a6c2ba28 1354}
1355
195a4ef6
MCC		 1356static int vidioc_querybuf(struct file *file, void *priv,
1357 struct v4l2_buffer *b)
e5589bef 1358{
195a4ef6
MCC		 1359 struct em28xx_fh *fh = priv;
1360 struct em28xx *dev = fh->dev;
1361 int rc;
e5589bef 1362
195a4ef6
MCC		 1363 rc = check_dev(dev);
1364 if (rc < 0)
1365 return rc;
2d50f847 1366
ad0ebb96 1367 return (videobuf_querybuf(&fh->vb_vidq, b));
195a4ef6
MCC		 1368}
1369
1370static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1371{
1372 struct em28xx_fh *fh = priv;
1373 struct em28xx *dev = fh->dev;
195a4ef6
MCC		 1374 int rc;
1375
1376 rc = check_dev(dev);
1377 if (rc < 0)
1378 return rc;
1379
ad0ebb96 1380 return (videobuf_qbuf(&fh->vb_vidq, b));
e5589bef
MCC		 1381}
1382
195a4ef6 1383static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
2d50f847 1384{
195a4ef6
MCC		 1385 struct em28xx_fh *fh = priv;
1386 struct em28xx *dev = fh->dev;
1387 int rc;
195a4ef6
MCC		 1388
1389 rc = check_dev(dev);
1390 if (rc < 0)
1391 return rc;
2d50f847 1392
ad0ebb96
MCC		 1393 return (videobuf_dqbuf(&fh->vb_vidq, b,
1394 file->f_flags & O_NONBLOCK));
1395}
2d50f847 1396
ad0ebb96 1397#ifdef CONFIG_VIDEO_V4L1_COMPAT
f245e549 1398static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
ad0ebb96 1399{
f245e549 1400 struct em28xx_fh *fh = priv;
2d50f847 1401
f245e549 1402 return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
195a4ef6 1403}
ad0ebb96
MCC		 1404#endif
1405
2d50f847 1406
0be43754
MCC		 1407/* ----------------------------------------------------------- */
1408/* RADIO ESPECIFIC IOCTLS */
1409/* ----------------------------------------------------------- */
1410
1411static int radio_querycap(struct file *file, void *priv,
1412 struct v4l2_capability *cap)
1413{
1414 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1415
1416 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1417 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1418 strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info));
1419
1420 cap->version = EM28XX_VERSION_CODE;
1421 cap->capabilities = V4L2_CAP_TUNER;
1422 return 0;
1423}
1424
1425static int radio_g_tuner(struct file *file, void *priv,
1426 struct v4l2_tuner *t)
1427{
1428 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1429
1430 if (unlikely(t->index > 0))
1431 return -EINVAL;
1432
1433 strcpy(t->name, "Radio");
1434 t->type = V4L2_TUNER_RADIO;
1435
1436 em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t);
1437 return 0;
1438}
1439
1440static int radio_enum_input(struct file *file, void *priv,
1441 struct v4l2_input *i)
1442{
1443 if (i->index != 0)
1444 return -EINVAL;
1445 strcpy(i->name, "Radio");
1446 i->type = V4L2_INPUT_TYPE_TUNER;
1447
1448 return 0;
1449}
1450
1451static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1452{
1453 if (unlikely(a->index))
1454 return -EINVAL;
1455
1456 strcpy(a->name, "Radio");
1457 return 0;
1458}
1459
1460static int radio_s_tuner(struct file *file, void *priv,
1461 struct v4l2_tuner *t)
1462{
1463 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1464
1465 if (0 != t->index)
1466 return -EINVAL;
1467
1468 em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t);
1469
1470 return 0;
1471}
1472
1473static int radio_s_audio(struct file *file, void *fh,
1474 struct v4l2_audio *a)
1475{
1476 return 0;
1477}
1478
1479static int radio_s_input(struct file *file, void *fh, unsigned int i)
1480{
1481 return 0;
1482}
1483
1484static int radio_queryctrl(struct file *file, void *priv,
1485 struct v4l2_queryctrl *qc)
1486{
1487 int i;
1488
1489 if (qc->id < V4L2_CID_BASE ||
1490 qc->id >= V4L2_CID_LASTP1)
1491 return -EINVAL;
1492
1493 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1494 if (qc->id && qc->id == em28xx_qctrl[i].id) {
1495 memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
1496 return 0;
1497 }
1498 }
1499
1500 return -EINVAL;
1501}
1502
195a4ef6
MCC		 1503/*
1504 * em28xx_v4l2_open()
1505 * inits the device and starts isoc transfer
1506 */
1507static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
1508{
1509 int minor = iminor(inode);
0be43754 1510 int errCode = 0, radio = 0;
6ea54d93 1511 struct em28xx *h, *dev = NULL;
195a4ef6 1512 struct em28xx_fh *fh;
d7aa8020 1513 enum v4l2_buf_type fh_type = 0;
2d50f847 1514
195a4ef6
MCC		 1515 list_for_each_entry(h, &em28xx_devlist, devlist) {
1516 if (h->vdev->minor == minor) {
1517 dev = h;
d7aa8020 1518 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
195a4ef6
MCC		 1519 }
1520 if (h->vbi_dev->minor == minor) {
1521 dev = h;
d7aa8020 1522 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
195a4ef6 1523 }
0be43754
MCC		 1524 if (h->radio_dev &&
1525 h->radio_dev->minor == minor) {
1526 radio = 1;
1527 dev = h;
1528 }
2d50f847 1529 }
195a4ef6
MCC		 1530 if (NULL == dev)
1531 return -ENODEV;
2d50f847 1532
195a4ef6 1533 em28xx_videodbg("open minor=%d type=%s users=%d\n",
d7aa8020 1534 minor, v4l2_type_names[fh_type], dev->users);
2d50f847 1535
9aeb4b05 1536
c67ec53f 1537 fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
195a4ef6
MCC		 1538 if (!fh) {
1539 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1540 return -ENOMEM;
1541 }
1542 mutex_lock(&dev->lock);
1543 fh->dev = dev;
0be43754 1544 fh->radio = radio;
d7aa8020 1545 fh->type = fh_type;
195a4ef6 1546 filp->private_data = fh;
9aeb4b05 1547
d7aa8020 1548 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
195a4ef6
MCC		 1549 dev->width = norm_maxw(dev);
1550 dev->height = norm_maxh(dev);
195a4ef6
MCC		 1551 dev->hscale = 0;
1552 dev->vscale = 0;
2d50f847 1553
c67ec53f 1554 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
3687e1e6 1555 em28xx_set_alternate(dev);
195a4ef6 1556 em28xx_resolution_set(dev);
2d50f847 1557
c67ec53f
MCC		 1558 /* Needed, since GPIO might have disabled power of
1559 some i2c device
1560 */
1561 em28xx_config_i2c(dev);
1562
2d50f847 1563 }
0be43754
MCC		 1564 if (fh->radio) {
1565 em28xx_videodbg("video_open: setting radio device\n");
1566 em28xx_i2c_call_clients(dev, AUDC_SET_RADIO, NULL);
1567 }
2d50f847 1568
195a4ef6 1569 dev->users++;
2d50f847 1570
ad0ebb96
MCC		 1571 videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
1572 NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED,
1573 sizeof(struct em28xx_buffer), fh);
1574
195a4ef6 1575 mutex_unlock(&dev->lock);
c67ec53f 1576
195a4ef6 1577 return errCode;
2d50f847 1578}
e5589bef 1579
a6c2ba28 1580/*
195a4ef6
MCC		 1581 * em28xx_realease_resources()
1582 * unregisters the v4l2,i2c and usb devices
1583 * called when the device gets disconected or at module unload
1584*/
1585static void em28xx_release_resources(struct em28xx *dev)
a6c2ba28 1586{
a6c2ba28 1587
195a4ef6 1588 /*FIXME: I2C IR should be disconnected */
a6c2ba28 1589
195a4ef6
MCC		 1590 em28xx_info("V4L2 devices /dev/video%d and /dev/vbi%d deregistered\n",
1591 dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN,
1592 dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN);
1593 list_del(&dev->devlist);
a9fc52bc
DH		 1594 if (dev->sbutton_input_dev)
1595 em28xx_deregister_snapshot_button(dev);
0be43754
MCC		 1596 if (dev->radio_dev) {
1597 if (-1 != dev->radio_dev->minor)
1598 video_unregister_device(dev->radio_dev);
1599 else
1600 video_device_release(dev->radio_dev);
1601 dev->radio_dev = NULL;
1602 }
1603 if (dev->vbi_dev) {
1604 if (-1 != dev->vbi_dev->minor)
1605 video_unregister_device(dev->vbi_dev);
1606 else
1607 video_device_release(dev->vbi_dev);
1608 dev->vbi_dev = NULL;
1609 }
1610 if (dev->vdev) {
1611 if (-1 != dev->vdev->minor)
1612 video_unregister_device(dev->vdev);
1613 else
1614 video_device_release(dev->vdev);
1615 dev->vdev = NULL;
1616 }
195a4ef6
MCC		 1617 em28xx_i2c_unregister(dev);
1618 usb_put_dev(dev->udev);
a6c2ba28 1619
195a4ef6 1620 /* Mark device as unused */
6ea54d93 1621 em28xx_devused &= ~(1<<dev->devno);
195a4ef6 1622}
a6c2ba28 1623
195a4ef6
MCC		 1624/*
1625 * em28xx_v4l2_close()
6ea54d93
DSL		 1626 * stops streaming and deallocates all resources allocated by the v4l2
1627 * calls and ioctls
195a4ef6
MCC		 1628 */
1629static int em28xx_v4l2_close(struct inode *inode, struct file *filp)
1630{
1631 struct em28xx_fh *fh = filp->private_data;
1632 struct em28xx *dev = fh->dev;
1633 int errCode;
a6c2ba28 1634
195a4ef6 1635 em28xx_videodbg("users=%d\n", dev->users);
a6c2ba28 1636
a6c2ba28 1637
195a4ef6
MCC		 1638 if (res_check(fh))
1639 res_free(fh);
a6c2ba28 1640
195a4ef6 1641 mutex_lock(&dev->lock);
a6c2ba28 1642
195a4ef6 1643 if (dev->users == 1) {
ad0ebb96
MCC		 1644 videobuf_stop(&fh->vb_vidq);
1645 videobuf_mmap_free(&fh->vb_vidq);
a6c2ba28 1646
195a4ef6
MCC		 1647 /* the device is already disconnect,
1648 free the remaining resources */
1649 if (dev->state & DEV_DISCONNECTED) {
1650 em28xx_release_resources(dev);
1651 mutex_unlock(&dev->lock);
1652 kfree(dev);
1653 return 0;
1654 }
a6c2ba28 1655
d7aa8020
AT		 1656 /* do this before setting alternate! */
1657 em28xx_uninit_isoc(dev);
c67ec53f 1658 em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
d7aa8020 1659
195a4ef6
MCC		 1660 /* set alternate 0 */
1661 dev->alt = 0;
1662 em28xx_videodbg("setting alternate 0\n");
1663 errCode = usb_set_interface(dev->udev, 0, 0);
1664 if (errCode < 0) {
1665 em28xx_errdev("cannot change alternate number to "
1666 "0 (error=%i)\n", errCode);
1667 }
9aeb4b05 1668 }
195a4ef6
MCC		 1669 kfree(fh);
1670 dev->users--;
1671 wake_up_interruptible_nr(&dev->open, 1);
1672 mutex_unlock(&dev->lock);
1673 return 0;
1674}
a6c2ba28 1675
195a4ef6
MCC		 1676/*
1677 * em28xx_v4l2_read()
1678 * will allocate buffers when called for the first time
1679 */
1680static ssize_t
6ea54d93 1681em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
f245e549 1682 loff_t *pos)
195a4ef6 1683{
195a4ef6
MCC		 1684 struct em28xx_fh *fh = filp->private_data;
1685 struct em28xx *dev = fh->dev;
ad0ebb96
MCC		 1686 int rc;
1687
1688 rc = check_dev(dev);
1689 if (rc < 0)
1690 return rc;
a6c2ba28 1691
195a4ef6
MCC		 1692 /* FIXME: read() is not prepared to allow changing the video
1693 resolution while streaming. Seems a bug at em28xx_set_fmt
1694 */
a6c2ba28 1695
ad0ebb96
MCC		 1696 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1697 if (unlikely(res_get(fh)))
1698 return -EBUSY;
195a4ef6 1699
ad0ebb96
MCC		 1700 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1701 filp->f_flags & O_NONBLOCK);
195a4ef6 1702 }
ad0ebb96 1703 return 0;
a6c2ba28 1704}
1705
1706/*
195a4ef6
MCC		 1707 * em28xx_v4l2_poll()
1708 * will allocate buffers when called for the first time
a6c2ba28 1709 */
195a4ef6 1710static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait)
a6c2ba28 1711{
a3a048ce 1712 struct em28xx_fh *fh = filp->private_data;
195a4ef6 1713 struct em28xx *dev = fh->dev;
ad0ebb96
MCC		 1714 int rc;
1715
1716 rc = check_dev(dev);
1717 if (rc < 0)
1718 return rc;
a6c2ba28 1719
195a4ef6
MCC		 1720 if (unlikely(res_get(fh) < 0))
1721 return POLLERR;
a6c2ba28 1722
ad0ebb96
MCC		 1723 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1724 return POLLERR;
a6c2ba28 1725
ad0ebb96 1726 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
195a4ef6 1727}
a6c2ba28 1728
195a4ef6
MCC		 1729/*
1730 * em28xx_v4l2_mmap()
1731 */
1732static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
1733{
1734 struct em28xx_fh *fh = filp->private_data;
1735 struct em28xx *dev = fh->dev;
ad0ebb96 1736 int rc;
a6c2ba28 1737
195a4ef6
MCC		 1738 if (unlikely(res_get(fh) < 0))
1739 return -EBUSY;
a6c2ba28 1740
ad0ebb96
MCC		 1741 rc = check_dev(dev);
1742 if (rc < 0)
1743 return rc;
a6c2ba28 1744
ad0ebb96 1745 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
a6c2ba28 1746
ad0ebb96
MCC		 1747 em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
1748 (unsigned long)vma->vm_start,
1749 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
1750 rc);
a6c2ba28 1751
ad0ebb96 1752 return rc;
a6c2ba28 1753}
1754
fa027c2a 1755static const struct file_operations em28xx_v4l_fops = {
195a4ef6
MCC		 1756 .owner = THIS_MODULE,
1757 .open = em28xx_v4l2_open,
1758 .release = em28xx_v4l2_close,
1759 .read = em28xx_v4l2_read,
1760 .poll = em28xx_v4l2_poll,
1761 .mmap = em28xx_v4l2_mmap,
1762 .ioctl = video_ioctl2,
1763 .llseek = no_llseek,
1764 .compat_ioctl = v4l_compat_ioctl32,
1765};
17cbe2e5 1766
a399810c 1767static const struct v4l2_ioctl_ops video_ioctl_ops = {
195a4ef6 1768 .vidioc_querycap = vidioc_querycap,
78b526a4
HV		 1769 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1770 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1771 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1772 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
195a4ef6
MCC		 1773 .vidioc_g_audio = vidioc_g_audio,
1774 .vidioc_s_audio = vidioc_s_audio,
1775 .vidioc_cropcap = vidioc_cropcap,
1776
78b526a4
HV		 1777 .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap,
1778 .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
1779 .vidioc_s_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
195a4ef6
MCC		 1780
1781 .vidioc_reqbufs = vidioc_reqbufs,
1782 .vidioc_querybuf = vidioc_querybuf,
1783 .vidioc_qbuf = vidioc_qbuf,
1784 .vidioc_dqbuf = vidioc_dqbuf,
1785 .vidioc_s_std = vidioc_s_std,
1786 .vidioc_enum_input = vidioc_enum_input,
1787 .vidioc_g_input = vidioc_g_input,
1788 .vidioc_s_input = vidioc_s_input,
1789 .vidioc_queryctrl = vidioc_queryctrl,
1790 .vidioc_g_ctrl = vidioc_g_ctrl,
1791 .vidioc_s_ctrl = vidioc_s_ctrl,
1792 .vidioc_streamon = vidioc_streamon,
1793 .vidioc_streamoff = vidioc_streamoff,
1794 .vidioc_g_tuner = vidioc_g_tuner,
1795 .vidioc_s_tuner = vidioc_s_tuner,
1796 .vidioc_g_frequency = vidioc_g_frequency,
1797 .vidioc_s_frequency = vidioc_s_frequency,
1e7ad56f
MCC		 1798#ifdef CONFIG_VIDEO_ADV_DEBUG
1799 .vidioc_g_register = vidioc_g_register,
1800 .vidioc_s_register = vidioc_s_register,
1801#endif
ad0ebb96
MCC		 1802#ifdef CONFIG_VIDEO_V4L1_COMPAT
1803 .vidiocgmbuf = vidiocgmbuf,
1804#endif
a399810c
HV		 1805};
1806
1807static const struct video_device em28xx_video_template = {
1808 .fops = &em28xx_v4l_fops,
1809 .release = video_device_release,
1810 .ioctl_ops = &video_ioctl_ops,
1811
1812 .minor = -1,
195a4ef6
MCC		 1813
1814 .tvnorms = V4L2_STD_ALL,
7d497f8a 1815 .current_norm = V4L2_STD_PAL,
a6c2ba28 1816};
1817
a399810c
HV		 1818static const struct file_operations radio_fops = {
1819 .owner = THIS_MODULE,
1820 .open = em28xx_v4l2_open,
1821 .release = em28xx_v4l2_close,
1822 .ioctl = video_ioctl2,
1823 .compat_ioctl = v4l_compat_ioctl32,
1824 .llseek = no_llseek,
1825};
1826
1827static const struct v4l2_ioctl_ops radio_ioctl_ops = {
0be43754
MCC		 1828 .vidioc_querycap = radio_querycap,
1829 .vidioc_g_tuner = radio_g_tuner,
1830 .vidioc_enum_input = radio_enum_input,
1831 .vidioc_g_audio = radio_g_audio,
1832 .vidioc_s_tuner = radio_s_tuner,
1833 .vidioc_s_audio = radio_s_audio,
1834 .vidioc_s_input = radio_s_input,
1835 .vidioc_queryctrl = radio_queryctrl,
1836 .vidioc_g_ctrl = vidioc_g_ctrl,
1837 .vidioc_s_ctrl = vidioc_s_ctrl,
1838 .vidioc_g_frequency = vidioc_g_frequency,
1839 .vidioc_s_frequency = vidioc_s_frequency,
1e7ad56f
MCC		 1840#ifdef CONFIG_VIDEO_ADV_DEBUG
1841 .vidioc_g_register = vidioc_g_register,
1842 .vidioc_s_register = vidioc_s_register,
1843#endif
0be43754
MCC		 1844};
1845
a399810c
HV		 1846static struct video_device em28xx_radio_template = {
1847 .name = "em28xx-radio",
1848 .type = VID_TYPE_TUNER,
1849 .fops = &radio_fops,
1850 .ioctl_ops = &radio_ioctl_ops,
1851 .minor = -1,
1852};
1853
6ea54d93 1854/******************************** usb interface ******************************/
a6c2ba28 1855
6d79468d
MCC		 1856
1857static LIST_HEAD(em28xx_extension_devlist);
1858static DEFINE_MUTEX(em28xx_extension_devlist_lock);
1859
1860int em28xx_register_extension(struct em28xx_ops *ops)
1861{
0367ca1b 1862 struct em28xx *dev = NULL;
6d79468d
MCC		 1863
1864 mutex_lock(&em28xx_extension_devlist_lock);
1865 list_add_tail(&ops->next, &em28xx_extension_devlist);
0367ca1b
DH		 1866 list_for_each_entry(dev, &em28xx_devlist, devlist) {
1867 if (dev)
1868 ops->init(dev);
1869 }
6d79468d
MCC		 1870 printk(KERN_INFO "Em28xx: Initialized (%s) extension\n", ops->name);
1871 mutex_unlock(&em28xx_extension_devlist_lock);
6d79468d
MCC		 1872 return 0;
1873}
1874EXPORT_SYMBOL(em28xx_register_extension);
1875
1876void em28xx_unregister_extension(struct em28xx_ops *ops)
1877{
0367ca1b 1878 struct em28xx *dev = NULL;
6d79468d 1879
0367ca1b
DH		 1880 list_for_each_entry(dev, &em28xx_devlist, devlist) {
1881 if (dev)
1882 ops->fini(dev);
1883 }
6d79468d
MCC		 1884
1885 mutex_lock(&em28xx_extension_devlist_lock);
1886 printk(KERN_INFO "Em28xx: Removed (%s) extension\n", ops->name);
1887 list_del(&ops->next);
1888 mutex_unlock(&em28xx_extension_devlist_lock);
1889}
1890EXPORT_SYMBOL(em28xx_unregister_extension);
1891
532fe652
AB		 1892static struct video_device *em28xx_vdev_init(struct em28xx *dev,
1893 const struct video_device *template,
1894 const int type,
1895 const char *type_name)
0be43754
MCC		 1896{
1897 struct video_device *vfd;
1898
1899 vfd = video_device_alloc();
1900 if (NULL == vfd)
1901 return NULL;
1902 *vfd = *template;
1903 vfd->minor = -1;
5e85e732 1904 vfd->parent = &dev->udev->dev;
0be43754
MCC		 1905 vfd->release = video_device_release;
1906 vfd->type = type;
e9e6040d 1907 vfd->debug = video_debug;
0be43754
MCC		 1908
1909 snprintf(vfd->name, sizeof(vfd->name), "%s %s",
1910 dev->name, type_name);
1911
1912 return vfd;
1913}
1914
1915
a6c2ba28 1916/*
3acf2809 1917 * em28xx_init_dev()
a6c2ba28 1918 * allocates and inits the device structs, registers i2c bus and v4l device
1919 */
3acf2809 1920static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
03910cc3 1921 int minor)
a6c2ba28 1922{
6d79468d 1923 struct em28xx_ops *ops = NULL;
3acf2809 1924 struct em28xx *dev = *devhandle;
a6c2ba28 1925 int retval = -ENOMEM;
7d497f8a 1926 int errCode;
a6c2ba28 1927 unsigned int maxh, maxw;
a6c2ba28 1928
a6c2ba28 1929 dev->udev = udev;
3593cab5 1930 mutex_init(&dev->lock);
d7aa8020 1931 spin_lock_init(&dev->slock);
a6c2ba28 1932 init_waitqueue_head(&dev->open);
a3a048ce
MCC		 1933 init_waitqueue_head(&dev->wait_frame);
1934 init_waitqueue_head(&dev->wait_stream);
a6c2ba28 1935
3acf2809
MCC		 1936 dev->em28xx_write_regs = em28xx_write_regs;
1937 dev->em28xx_read_reg = em28xx_read_reg;
1938 dev->em28xx_read_reg_req_len = em28xx_read_reg_req_len;
1939 dev->em28xx_write_regs_req = em28xx_write_regs_req;
1940 dev->em28xx_read_reg_req = em28xx_read_reg_req;
fad7b958 1941 dev->is_em2800 = em28xx_boards[dev->model].is_em2800;
a6c2ba28 1942
a94e95b4 1943 em28xx_pre_card_setup(dev);
03910cc3 1944
3acf2809 1945 errCode = em28xx_config(dev);
a6c2ba28 1946 if (errCode) {
3acf2809 1947 em28xx_errdev("error configuring device\n");
03910cc3 1948 em28xx_devused &= ~(1<<dev->devno);
7c908fbb 1949 kfree(dev);
a6c2ba28 1950 return -ENOMEM;
1951 }
1952
a6c2ba28 1953 /* register i2c bus */
3acf2809 1954 em28xx_i2c_register(dev);
a6c2ba28 1955
1956 /* Do board specific init and eeprom reading */
3acf2809 1957 em28xx_card_setup(dev);
a6c2ba28 1958
3abee53e
MCC		 1959 /* Configure audio */
1960 em28xx_audio_analog_set(dev);
1961
a6c2ba28 1962 /* configure the device */
3acf2809 1963 em28xx_config_i2c(dev);
a6c2ba28 1964
7d497f8a
MCC		 1965 /* set default norm */
1966 dev->norm = em28xx_video_template.current_norm;
03910cc3
MCC		 1967
1968 maxw = norm_maxw(dev);
1969 maxh = norm_maxh(dev);
1970
1971 /* set default image size */
1972 dev->width = maxw;
1973 dev->height = maxh;
1974 dev->interlaced = EM28XX_INTERLACED_DEFAULT;
03910cc3
MCC		 1975 dev->hscale = 0;
1976 dev->vscale = 0;
1977 dev->ctl_input = 2;
1978
3acf2809 1979 errCode = em28xx_config(dev);
a6c2ba28 1980
0be43754
MCC		 1981 list_add_tail(&dev->devlist, &em28xx_devlist);
1982
195a4ef6 1983 /* allocate and fill video video_device struct */
0be43754
MCC		 1984 dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template,
1985 VID_TYPE_CAPTURE, "video");
a6c2ba28 1986 if (NULL == dev->vdev) {
3acf2809 1987 em28xx_errdev("cannot allocate video_device.\n");
0be43754 1988 goto fail_unreg;
e5589bef 1989 }
ed086314 1990 if (dev->tuner_type != TUNER_ABSENT)
195a4ef6 1991 dev->vdev->type |= VID_TYPE_TUNER;
0be43754
MCC		 1992
1993 /* register v4l2 video video_device */
1994 retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
1995 video_nr[dev->devno]);
1996 if (retval) {
1997 em28xx_errdev("unable to register video device (error=%i).\n",
1998 retval);
1999 goto fail_unreg;
2000 }
e5589bef 2001
195a4ef6 2002 /* Allocate and fill vbi video_device struct */
0be43754
MCC		 2003 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
2004 VFL_TYPE_VBI, "vbi");
2005 /* register v4l2 vbi video_device */
2006 if (video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2007 vbi_nr[dev->devno]) < 0) {
2008 em28xx_errdev("unable to register vbi device\n");
2009 retval = -ENODEV;
2010 goto fail_unreg;
2011 }
2012
2013 if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2014 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2015 VFL_TYPE_RADIO, "radio");
2016 if (NULL == dev->radio_dev) {
2017 em28xx_errdev("cannot allocate video_device.\n");
2018 goto fail_unreg;
2019 }
2020 retval = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2021 radio_nr[dev->devno]);
2022 if (retval < 0) {
2023 em28xx_errdev("can't register radio device\n");
2024 goto fail_unreg;
2025 }
2026 em28xx_info("Registered radio device as /dev/radio%d\n",
2027 dev->radio_dev->minor & 0x1f);
a6c2ba28 2028 }
e5589bef 2029
ad0ebb96
MCC		 2030 /* init video dma queues */
2031 INIT_LIST_HEAD(&dev->vidq.active);
2032 INIT_LIST_HEAD(&dev->vidq.queued);
2033
a6c2ba28 2034
5a80415b
SS		 2035 if (dev->has_msp34xx) {
2036 /* Send a reset to other chips via gpio */
2037 em28xx_write_regs_req(dev, 0x00, 0x08, "\xf7", 1);
2038 msleep(3);
2039 em28xx_write_regs_req(dev, 0x00, 0x08, "\xff", 1);
2040 msleep(3);
5a80415b 2041 }
195a4ef6 2042
5a80415b
SS		 2043 video_mux(dev, 0);
2044
e5589bef
MCC		 2045 em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2046 dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN,
2047 dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN);
a6c2ba28 2048
6d79468d
MCC		 2049 mutex_lock(&em28xx_extension_devlist_lock);
2050 if (!list_empty(&em28xx_extension_devlist)) {
2051 list_for_each_entry(ops, &em28xx_extension_devlist, next) {
2052 if (ops->id)
2053 ops->init(dev);
2054 }
2055 }
2056 mutex_unlock(&em28xx_extension_devlist_lock);
2057
a6c2ba28 2058 return 0;
0be43754
MCC		 2059
2060fail_unreg:
2061 em28xx_release_resources(dev);
2062 mutex_unlock(&dev->lock);
2063 kfree(dev);
2064 return retval;
a6c2ba28 2065}
2066
d7448a8d
MCC		 2067#if defined(CONFIG_MODULES) && defined(MODULE)
2068static void request_module_async(struct work_struct *work)
2069{
2070 struct em28xx *dev = container_of(work,
2071 struct em28xx, request_module_wk);
2072
3f4dfe2a
MCC		 2073 if (dev->has_audio_class)
2074 request_module("snd-usb-audio");
2075 else
d7448a8d 2076 request_module("em28xx-alsa");
3aefb79a
MCC		 2077
2078 if (dev->has_dvb)
2079 request_module("em28xx-dvb");
d7448a8d
MCC		 2080}
2081
2082static void request_modules(struct em28xx *dev)
2083{
2084 INIT_WORK(&dev->request_module_wk, request_module_async);
2085 schedule_work(&dev->request_module_wk);
2086}
2087#else
2088#define request_modules(dev)
2089#endif /* CONFIG_MODULES */
2090
a6c2ba28 2091/*
3acf2809 2092 * em28xx_usb_probe()
a6c2ba28 2093 * checks for supported devices
2094 */
3acf2809 2095static int em28xx_usb_probe(struct usb_interface *interface,
a6c2ba28 2096 const struct usb_device_id *id)
2097{
2098 const struct usb_endpoint_descriptor *endpoint;
2099 struct usb_device *udev;
9d4d9c05 2100 struct usb_interface *uif;
3acf2809 2101 struct em28xx *dev = NULL;
a6c2ba28 2102 int retval = -ENODEV;
03910cc3 2103 int i, nr, ifnum;
a6c2ba28 2104
2105 udev = usb_get_dev(interface_to_usbdev(interface));
d5e52653
MCC		 2106 ifnum = interface->altsetting[0].desc.bInterfaceNumber;
2107
e5589bef 2108 /* Check to see next free device and mark as used */
6ea54d93
DSL		 2109 nr = find_first_zero_bit(&em28xx_devused, EM28XX_MAXBOARDS);
2110 em28xx_devused |= 1<<nr;
a6c2ba28 2111
596d92d5 2112 /* Don't register audio interfaces */
91cad0f2 2113 if (interface->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) {
3acf2809 2114 em28xx_err(DRIVER_NAME " audio device (%04x:%04x): interface %i, class %i\n",
6ea54d93
DSL		 2115 udev->descriptor.idVendor,
2116 udev->descriptor.idProduct,
91cad0f2
MCC		 2117 ifnum,
2118 interface->altsetting[0].desc.bInterfaceClass);
e5589bef 2119
6ea54d93 2120 em28xx_devused &= ~(1<<nr);
596d92d5 2121 return -ENODEV;
91cad0f2
MCC		 2122 }
2123
3acf2809 2124 em28xx_err(DRIVER_NAME " new video device (%04x:%04x): interface %i, class %i\n",
6ea54d93
DSL		 2125 udev->descriptor.idVendor,
2126 udev->descriptor.idProduct,
91cad0f2
MCC		 2127 ifnum,
2128 interface->altsetting[0].desc.bInterfaceClass);
596d92d5 2129
d5e52653
MCC		 2130 endpoint = &interface->cur_altsetting->endpoint[1].desc;
2131
59c51591 2132 /* check if the device has the iso in endpoint at the correct place */
a6c2ba28 2133 if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
2134 USB_ENDPOINT_XFER_ISOC) {
3acf2809 2135 em28xx_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n");
6ea54d93 2136 em28xx_devused &= ~(1<<nr);
a6c2ba28 2137 return -ENODEV;
2138 }
2139 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
3acf2809 2140 em28xx_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n");
6ea54d93 2141 em28xx_devused &= ~(1<<nr);
a6c2ba28 2142 return -ENODEV;
2143 }
2144
19478843 2145 if (nr >= EM28XX_MAXBOARDS) {
6ea54d93
DSL		 2146 printk(DRIVER_NAME ": Supports only %i em28xx boards.\n",
2147 EM28XX_MAXBOARDS);
2148 em28xx_devused &= ~(1<<nr);
596d92d5
MCC		 2149 return -ENOMEM;
2150 }
2151
2152 /* allocate memory for our device state and initialize it */
7408187d 2153 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
596d92d5 2154 if (dev == NULL) {
3acf2809 2155 em28xx_err(DRIVER_NAME ": out of memory!\n");
6ea54d93 2156 em28xx_devused &= ~(1<<nr);
596d92d5
MCC		 2157 return -ENOMEM;
2158 }
596d92d5 2159
e5589bef 2160 snprintf(dev->name, 29, "em28xx #%d", nr);
03910cc3
MCC		 2161 dev->devno = nr;
2162 dev->model = id->driver_info;
3687e1e6 2163 dev->alt = -1;
e5589bef 2164
d7448a8d
MCC		 2165 /* Checks if audio is provided by some interface */
2166 for (i = 0; i < udev->config->desc.bNumInterfaces; i++) {
2167 uif = udev->config->interface[i];
2168 if (uif->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) {
2169 dev->has_audio_class = 1;
2170 break;
2171 }
2172 }
2173
2174 printk(KERN_INFO DRIVER_NAME " %s usb audio class\n",
2175 dev->has_audio_class ? "Has" : "Doesn't have");
2176
9d4d9c05
MCC		 2177 /* compute alternate max packet sizes */
2178 uif = udev->actconfig->interface[0];
2179
6ea54d93
DSL		 2180 dev->num_alt = uif->num_altsetting;
2181 em28xx_info("Alternate settings: %i\n", dev->num_alt);
2182/* dev->alt_max_pkt_size = kmalloc(sizeof(*dev->alt_max_pkt_size)* */
2183 dev->alt_max_pkt_size = kmalloc(32 * dev->num_alt, GFP_KERNEL);
2184
9d4d9c05 2185 if (dev->alt_max_pkt_size == NULL) {
e5589bef 2186 em28xx_errdev("out of memory!\n");
6ea54d93 2187 em28xx_devused &= ~(1<<nr);
1207cf84 2188 kfree(dev);
9d4d9c05
MCC		 2189 return -ENOMEM;
2190 }
2191
2192 for (i = 0; i < dev->num_alt ; i++) {
2193 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
2194 wMaxPacketSize);
2195 dev->alt_max_pkt_size[i] =
2196 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
6ea54d93
DSL		 2197 em28xx_info("Alternate setting %i, max size= %i\n", i,
2198 dev->alt_max_pkt_size[i]);
9d4d9c05
MCC		 2199 }
2200
6ea54d93 2201 if ((card[nr] >= 0) && (card[nr] < em28xx_bcount))
03910cc3 2202 dev->model = card[nr];
596d92d5 2203
a6c2ba28 2204 /* allocate device struct */
03910cc3 2205 retval = em28xx_init_dev(&dev, udev, nr);
a6c2ba28 2206 if (retval)
2207 return retval;
2208
03910cc3 2209 em28xx_info("Found %s\n", em28xx_boards[dev->model].name);
a6c2ba28 2210
2211 /* save our data pointer in this interface device */
2212 usb_set_intfdata(interface, dev);
d7448a8d
MCC		 2213
2214 request_modules(dev);
2215
a6c2ba28 2216 return 0;
2217}
2218
2219/*
3acf2809 2220 * em28xx_usb_disconnect()
a6c2ba28 2221 * called when the device gets diconencted
2222 * video device will be unregistered on v4l2_close in case it is still open
2223 */
3acf2809 2224static void em28xx_usb_disconnect(struct usb_interface *interface)
a6c2ba28 2225{
5a80415b 2226 struct em28xx *dev;
6d79468d 2227 struct em28xx_ops *ops = NULL;
5a80415b
SS		 2228
2229 dev = usb_get_intfdata(interface);
a6c2ba28 2230 usb_set_intfdata(interface, NULL);
2231
2232 if (!dev)
2233 return;
2234
5a80415b 2235 em28xx_info("disconnecting %s\n", dev->vdev->name);
a6c2ba28 2236
6ea54d93
DSL		 2237 /* wait until all current v4l2 io is finished then deallocate
2238 resources */
3593cab5 2239 mutex_lock(&dev->lock);
a6c2ba28 2240
a6c2ba28 2241 wake_up_interruptible_all(&dev->open);
2242
2243 if (dev->users) {
3acf2809 2244 em28xx_warn
a6c2ba28 2245 ("device /dev/video%d is open! Deregistration and memory "
e5589bef
MCC		 2246 "deallocation are deferred on close.\n",
2247 dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN);
2248
a6c2ba28 2249 dev->state |= DEV_MISCONFIGURED;
3acf2809 2250 em28xx_uninit_isoc(dev);
a6c2ba28 2251 dev->state |= DEV_DISCONNECTED;
2252 wake_up_interruptible(&dev->wait_frame);
2253 wake_up_interruptible(&dev->wait_stream);
2254 } else {
2255 dev->state |= DEV_DISCONNECTED;
3acf2809 2256 em28xx_release_resources(dev);
a6c2ba28 2257 }
3593cab5 2258 mutex_unlock(&dev->lock);
a6c2ba28 2259
6d79468d
MCC		 2260 mutex_lock(&em28xx_extension_devlist_lock);
2261 if (!list_empty(&em28xx_extension_devlist)) {
2262 list_for_each_entry(ops, &em28xx_extension_devlist, next) {
2263 ops->fini(dev);
2264 }
2265 }
2266 mutex_unlock(&em28xx_extension_devlist_lock);
2267
9d4d9c05
MCC		 2268 if (!dev->users) {
2269 kfree(dev->alt_max_pkt_size);
a6c2ba28 2270 kfree(dev);
9d4d9c05 2271 }
a6c2ba28 2272}
2273
3acf2809 2274static struct usb_driver em28xx_usb_driver = {
3acf2809
MCC		 2275 .name = "em28xx",
2276 .probe = em28xx_usb_probe,
2277 .disconnect = em28xx_usb_disconnect,
2278 .id_table = em28xx_id_table,
a6c2ba28 2279};
2280
3acf2809 2281static int __init em28xx_module_init(void)
a6c2ba28 2282{
2283 int result;
2284
2285 printk(KERN_INFO DRIVER_NAME " v4l2 driver version %d.%d.%d loaded\n",
3acf2809
MCC		 2286 (EM28XX_VERSION_CODE >> 16) & 0xff,
2287 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
a6c2ba28 2288#ifdef SNAPSHOT
2289 printk(KERN_INFO DRIVER_NAME " snapshot date %04d-%02d-%02d\n",
2290 SNAPSHOT / 10000, (SNAPSHOT / 100) % 100, SNAPSHOT % 100);
2291#endif
2292
2293 /* register this driver with the USB subsystem */
3acf2809 2294 result = usb_register(&em28xx_usb_driver);
a6c2ba28 2295 if (result)
3acf2809 2296 em28xx_err(DRIVER_NAME
a6c2ba28 2297 " usb_register failed. Error number %d.\n", result);
2298
2299 return result;
2300}
2301
3acf2809 2302static void __exit em28xx_module_exit(void)
a6c2ba28 2303{
2304 /* deregister this driver with the USB subsystem */
3acf2809 2305 usb_deregister(&em28xx_usb_driver);
a6c2ba28 2306}
2307
3acf2809
MCC		 2308module_init(em28xx_module_init);
2309module_exit(em28xx_module_exit);
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