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V4L/DVB (3293): Fixed amux hauppauge hvr900/terratec hybrid xs
[linux-2.6/x86.git] / drivers / media / video / em28xx / em28xx-video.c
blobf56ae4852165e1dba939527a7e70c870f7aaf663
1 /*
2 em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB video capture devices
3
4 Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
5 Markus Rechberger <mrechberger@gmail.com>
6 Mauro Carvalho Chehab <mchehab@brturbo.com.br>
7 Sascha Sommer <saschasommer@freenet.de>
8
9 Some parts based on SN9C10x PC Camera Controllers GPL driver made
10 by Luca Risolia <luca.risolia@studio.unibo.it>
11
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
16
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 */
26
27 #include <linux/init.h>
28 #include <linux/list.h>
29 #include <linux/module.h>
30 #include <linux/kernel.h>
31 #include <linux/bitmap.h>
32 #include <linux/usb.h>
33 #include <linux/i2c.h>
34 #include <linux/version.h>
35 #include <linux/video_decoder.h>
36 #include <linux/mutex.h>
37
38 #include "em28xx.h"
39 #include <media/tuner.h>
40 #include <media/v4l2-common.h>
41
42 #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
43 "Markus Rechberger <mrechberger@gmail.com>, " \
44 "Mauro Carvalho Chehab <mchehab@brturbo.com.br>, " \
45 "Sascha Sommer <saschasommer@freenet.de>"
46
47 #define DRIVER_NAME "em28xx"
48 #define DRIVER_DESC "Empia em28xx based USB video device driver"
49 #define EM28XX_VERSION_CODE KERNEL_VERSION(0, 0, 1)
50
51 #define em28xx_videodbg(fmt, arg...) do {\
52 if (video_debug) \
53 printk(KERN_INFO "%s %s :"fmt, \
54 dev->name, __FUNCTION__ , ##arg); } while (0)
55
56 MODULE_AUTHOR(DRIVER_AUTHOR);
57 MODULE_DESCRIPTION(DRIVER_DESC);
58 MODULE_LICENSE("GPL");
59
60 static LIST_HEAD(em28xx_devlist);
61
62 static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
63 static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
64 static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
65 module_param_array(card, int, NULL, 0444);
66 module_param_array(video_nr, int, NULL, 0444);
67 module_param_array(vbi_nr, int, NULL, 0444);
68 MODULE_PARM_DESC(card,"card type");
69 MODULE_PARM_DESC(video_nr,"video device numbers");
70 MODULE_PARM_DESC(vbi_nr,"vbi device numbers");
71
72 static int tuner = -1;
73 module_param(tuner, int, 0444);
74 MODULE_PARM_DESC(tuner, "tuner type");
75
76 static unsigned int video_debug = 0;
77 module_param(video_debug,int,0644);
78 MODULE_PARM_DESC(video_debug,"enable debug messages [video]");
79
80 /* Bitmask marking allocated devices from 0 to EM28XX_MAXBOARDS */
81 static unsigned long em28xx_devused;
82
83 /* supported tv norms */
84 static struct em28xx_tvnorm tvnorms[] = {
85 {
86 .name = "PAL",
87 .id = V4L2_STD_PAL,
88 .mode = VIDEO_MODE_PAL,
89 }, {
90 .name = "NTSC",
91 .id = V4L2_STD_NTSC,
92 .mode = VIDEO_MODE_NTSC,
93 }, {
94 .name = "SECAM",
95 .id = V4L2_STD_SECAM,
96 .mode = VIDEO_MODE_SECAM,
97 }, {
98 .name = "PAL-M",
99 .id = V4L2_STD_PAL_M,
100 .mode = VIDEO_MODE_PAL,
101 }
102 };
103
104 static const unsigned char saa7114_i2c_init[] = {
105 0x00,0x00,0x01,0x08,0x02,0xc4,0x03,0x30,0x04,0x90,0x05,0x90,0x06,0xeb,0x07,0xe0,
106 0x08,0x88,0x09,0x40,0x0a,0x80,0x0b,0x44,0x0c,0x40,0x0d,0x00,0x0e,0x81,0x0f,0x2a,
107 0x10,0x06,0x11,0x00,0x12,0xc8,0x13,0x80,0x14,0x00,0x15,0x11,0x16,0x01,0x17,0x42,
108 0x18,0x40,0x19,0x80,0x40,0x00,0x41,0xff,0x42,0xff,0x43,0xff,0x44,0xff,0x45,0xff,
109 0x46,0xff,0x47,0xff,0x48,0xff,0x49,0xff,0x4a,0xff,0x4b,0xff,0x4c,0xff,0x4d,0xff,
110 0x4e,0xff,0x4f,0xff,0x50,0xff,0x51,0xff,0x52,0xff,0x53,0xff,0x54,0x5f,0x55,0xff,
111 0x56,0xff,0x57,0xff,0x58,0x00,0x59,0x47,0x5a,0x03,0x5b,0x03,0x5d,0x3e,0x5e,0x00,
112 0x80,0x1c,0x83,0x01,0x84,0xa5,0x85,0x10,0x86,0x45,0x87,0x41,0x88,0xf0,0x88,0x00,
113 0x88,0xf0,0x90,0x00,0x91,0x08,0x92,0x00,0x93,0x80,0x94,0x08,0x95,0x00,0x96,0xc0,
114 0x97,0x02,0x98,0x13,0x99,0x00,0x9a,0x38,0x9b,0x01,0x9c,0x80,0x9d,0x02,0x9e,0x06,
115 0x9f,0x01,0xa0,0x01,0xa1,0x00,0xa2,0x00,0xa4,0x80,0xa5,0x36,0xa6,0x36,0xa8,0x67,
116 0xa9,0x04,0xaa,0x00,0xac,0x33,0xad,0x02,0xae,0x00,0xb0,0xcd,0xb1,0x04,0xb2,0xcd,
117 0xb3,0x04,0xb4,0x01,0xb8,0x00,0xb9,0x00,0xba,0x00,0xbb,0x00,0xbc,0x00,0xbd,0x00,
118 0xbe,0x00,0xbf,0x00
119 };
120
121 #define TVNORMS ARRAY_SIZE(tvnorms)
122
123 /* supported controls */
124 /* Common to all boards */
125 static struct v4l2_queryctrl em28xx_qctrl[] = {
126 {
127 .id = V4L2_CID_AUDIO_VOLUME,
128 .type = V4L2_CTRL_TYPE_INTEGER,
129 .name = "Volume",
130 .minimum = 0x0,
131 .maximum = 0x1f,
132 .step = 0x1,
133 .default_value = 0x1f,
134 .flags = 0,
135 },{
136 .id = V4L2_CID_AUDIO_MUTE,
137 .type = V4L2_CTRL_TYPE_BOOLEAN,
138 .name = "Mute",
139 .minimum = 0,
140 .maximum = 1,
141 .step = 1,
142 .default_value = 1,
143 .flags = 0,
144 }
145 };
146
147 /* FIXME: These are specific to saa711x - should be moved to its code */
148 static struct v4l2_queryctrl saa711x_qctrl[] = {
149 {
150 .id = V4L2_CID_BRIGHTNESS,
151 .type = V4L2_CTRL_TYPE_INTEGER,
152 .name = "Brightness",
153 .minimum = -128,
154 .maximum = 127,
155 .step = 1,
156 .default_value = 0,
157 .flags = 0,
158 },{
159 .id = V4L2_CID_CONTRAST,
160 .type = V4L2_CTRL_TYPE_INTEGER,
161 .name = "Contrast",
162 .minimum = 0x0,
163 .maximum = 0x1f,
164 .step = 0x1,
165 .default_value = 0x10,
166 .flags = 0,
167 },{
168 .id = V4L2_CID_SATURATION,
169 .type = V4L2_CTRL_TYPE_INTEGER,
170 .name = "Saturation",
171 .minimum = 0x0,
172 .maximum = 0x1f,
173 .step = 0x1,
174 .default_value = 0x10,
175 .flags = 0,
176 },{
177 .id = V4L2_CID_RED_BALANCE,
178 .type = V4L2_CTRL_TYPE_INTEGER,
179 .name = "Red chroma balance",
180 .minimum = -128,
181 .maximum = 127,
182 .step = 1,
183 .default_value = 0,
184 .flags = 0,
185 },{
186 .id = V4L2_CID_BLUE_BALANCE,
187 .type = V4L2_CTRL_TYPE_INTEGER,
188 .name = "Blue chroma balance",
189 .minimum = -128,
190 .maximum = 127,
191 .step = 1,
192 .default_value = 0,
193 .flags = 0,
194 },{
195 .id = V4L2_CID_GAMMA,
196 .type = V4L2_CTRL_TYPE_INTEGER,
197 .name = "Gamma",
198 .minimum = 0x0,
199 .maximum = 0x3f,
200 .step = 0x1,
201 .default_value = 0x20,
202 .flags = 0,
203 }
204 };
205
206 static struct usb_driver em28xx_usb_driver;
207
208 static DEFINE_MUTEX(em28xx_sysfs_lock);
209 static DECLARE_RWSEM(em28xx_disconnect);
210
211 /********************* v4l2 interface ******************************************/
212
213 /*
214 * em28xx_config()
215 * inits registers with sane defaults
216 */
217 static int em28xx_config(struct em28xx *dev)
218 {
219
220 /* Sets I2C speed to 100 KHz */
221 em28xx_write_regs_req(dev, 0x00, 0x06, "\x40", 1);
222
223 /* enable vbi capturing */
224
225 /* em28xx_write_regs_req(dev,0x00,0x0e,"\xC0",1); audio register */
226 /* em28xx_write_regs_req(dev,0x00,0x0f,"\x80",1); clk register */
227 em28xx_write_regs_req(dev,0x00,0x11,"\x51",1);
228
229 em28xx_audio_usb_mute(dev, 1);
230 dev->mute = 1; /* maybe not the right place... */
231 dev->volume = 0x1f;
232 em28xx_audio_analog_set(dev);
233 em28xx_audio_analog_setup(dev);
234 em28xx_outfmt_set_yuv422(dev);
235 em28xx_colorlevels_set_default(dev);
236 em28xx_compression_disable(dev);
237
238 return 0;
239 }
240
241 /*
242 * em28xx_config_i2c()
243 * configure i2c attached devices
244 */
245 static void em28xx_config_i2c(struct em28xx *dev)
246 {
247 struct v4l2_frequency f;
248 struct video_decoder_init em28xx_vdi = {.data = NULL };
249
250
251 /* configure decoder */
252 if(dev->model == EM2820_BOARD_MSI_VOX_USB_2){
253 em28xx_vdi.data=saa7114_i2c_init;
254 em28xx_vdi.len=sizeof(saa7114_i2c_init);
255 }
256
257
258 em28xx_i2c_call_clients(dev, DECODER_INIT, &em28xx_vdi);
259 em28xx_i2c_call_clients(dev, DECODER_SET_INPUT, &dev->ctl_input);
260 /* em28xx_i2c_call_clients(dev,DECODER_SET_PICTURE, &dev->vpic); */
261 /* em28xx_i2c_call_clients(dev,DECODER_SET_NORM,&dev->tvnorm->id); */
262 /* em28xx_i2c_call_clients(dev,DECODER_ENABLE_OUTPUT,&output); */
263 /* em28xx_i2c_call_clients(dev,DECODER_DUMP, NULL); */
264
265 /* configure tuner */
266 f.tuner = 0;
267 f.type = V4L2_TUNER_ANALOG_TV;
268 f.frequency = 9076; /* FIXME:remove magic number */
269 dev->ctl_freq = f.frequency;
270 em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, &f);
271
272 /* configure tda9887 */
273
274
275 /* em28xx_i2c_call_clients(dev,VIDIOC_S_STD,&dev->tvnorm->id); */
276 }
277
278 /*
279 * em28xx_empty_framequeues()
280 * prepare queues for incoming and outgoing frames
281 */
282 static void em28xx_empty_framequeues(struct em28xx *dev)
283 {
284 u32 i;
285
286 INIT_LIST_HEAD(&dev->inqueue);
287 INIT_LIST_HEAD(&dev->outqueue);
288
289 for (i = 0; i < EM28XX_NUM_FRAMES; i++) {
290 dev->frame[i].state = F_UNUSED;
291 dev->frame[i].buf.bytesused = 0;
292 }
293 }
294
295 static void video_mux(struct em28xx *dev, int index)
296 {
297 int input, ainput;
298
299 input = INPUT(index)->vmux;
300 dev->ctl_input = index;
301 dev->ctl_ainput = INPUT(index)->amux;
302
303 em28xx_i2c_call_clients(dev, DECODER_SET_INPUT, &input);
304
305
306 em28xx_videodbg("Setting input index=%d, vmux=%d, amux=%d\n",index,input,dev->ctl_ainput);
307
308 if (dev->has_msp34xx) {
309 if (dev->i2s_speed)
310 em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ, &dev->i2s_speed);
311 em28xx_i2c_call_clients(dev, VIDIOC_S_AUDIO, &dev->ctl_ainput);
312 ainput = EM28XX_AUDIO_SRC_TUNER;
313 em28xx_audio_source(dev, ainput);
314 } else {
315 switch (dev->ctl_ainput) {
316 case 0:
317 ainput = EM28XX_AUDIO_SRC_TUNER;
318 break;
319 default:
320 ainput = EM28XX_AUDIO_SRC_LINE;
321 }
322 em28xx_audio_source(dev, ainput);
323 }
324 }
325
326 /*
327 * em28xx_v4l2_open()
328 * inits the device and starts isoc transfer
329 */
330 static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
331 {
332 int minor = iminor(inode);
333 int errCode = 0;
334 struct em28xx *h,*dev = NULL;
335 struct list_head *list;
336
337 list_for_each(list,&em28xx_devlist) {
338 h = list_entry(list, struct em28xx, devlist);
339 if (h->vdev->minor == minor) {
340 dev = h;
341 dev->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
342 }
343 if (h->vbi_dev->minor == minor) {
344 dev = h;
345 dev->type = V4L2_BUF_TYPE_VBI_CAPTURE;
346 }
347 }
348 if (NULL == dev)
349 return -ENODEV;
350
351 filp->private_data=dev;
352
353 em28xx_videodbg("open minor=%d type=%s users=%d\n",
354 minor,v4l2_type_names[dev->type],dev->users);
355
356 if (!down_read_trylock(&em28xx_disconnect))
357 return -ERESTARTSYS;
358
359 if (dev->users) {
360 em28xx_warn("this driver can be opened only once\n");
361 up_read(&em28xx_disconnect);
362 return -EBUSY;
363 }
364
365 mutex_init(&dev->fileop_lock); /* to 1 == available */
366 spin_lock_init(&dev->queue_lock);
367 init_waitqueue_head(&dev->wait_frame);
368 init_waitqueue_head(&dev->wait_stream);
369
370 mutex_lock(&dev->lock);
371
372 if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
373 em28xx_set_alternate(dev);
374
375 dev->width = norm_maxw(dev);
376 dev->height = norm_maxh(dev);
377 dev->frame_size = dev->width * dev->height * 2;
378 dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
379 dev->bytesperline = dev->width * 2;
380 dev->hscale = 0;
381 dev->vscale = 0;
382
383 em28xx_capture_start(dev, 1);
384 em28xx_resolution_set(dev);
385
386 /* device needs to be initialized before isoc transfer */
387 video_mux(dev, 0);
388
389 /* start the transfer */
390 errCode = em28xx_init_isoc(dev);
391 if (errCode)
392 goto err;
393
394 }
395
396 dev->users++;
397 filp->private_data = dev;
398 dev->io = IO_NONE;
399 dev->stream = STREAM_OFF;
400 dev->num_frames = 0;
401
402 /* prepare queues */
403 em28xx_empty_framequeues(dev);
404
405 dev->state |= DEV_INITIALIZED;
406
407 err:
408 mutex_unlock(&dev->lock);
409 up_read(&em28xx_disconnect);
410 return errCode;
411 }
412
413 /*
414 * em28xx_realease_resources()
415 * unregisters the v4l2,i2c and usb devices
416 * called when the device gets disconected or at module unload
417 */
418 static void em28xx_release_resources(struct em28xx *dev)
419 {
420 mutex_lock(&em28xx_sysfs_lock);
421
422 /*FIXME: I2C IR should be disconnected */
423
424 em28xx_info("V4L2 devices /dev/video%d and /dev/vbi%d deregistered\n",
425 dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN,
426 dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN);
427 list_del(&dev->devlist);
428 video_unregister_device(dev->vdev);
429 video_unregister_device(dev->vbi_dev);
430 em28xx_i2c_unregister(dev);
431 usb_put_dev(dev->udev);
432 mutex_unlock(&em28xx_sysfs_lock);
433
434
435 /* Mark device as unused */
436 em28xx_devused&=~(1<<dev->devno);
437 }
438
439 /*
440 * em28xx_v4l2_close()
441 * stops streaming and deallocates all resources allocated by the v4l2 calls and ioctls
442 */
443 static int em28xx_v4l2_close(struct inode *inode, struct file *filp)
444 {
445 int errCode;
446 struct em28xx *dev=filp->private_data;
447
448 em28xx_videodbg("users=%d\n", dev->users);
449
450 mutex_lock(&dev->lock);
451
452 em28xx_uninit_isoc(dev);
453
454 em28xx_release_buffers(dev);
455
456 /* the device is already disconnect, free the remaining resources */
457 if (dev->state & DEV_DISCONNECTED) {
458 em28xx_release_resources(dev);
459 mutex_unlock(&dev->lock);
460 kfree(dev);
461 return 0;
462 }
463
464 /* set alternate 0 */
465 dev->alt = 0;
466 em28xx_videodbg("setting alternate 0\n");
467 errCode = usb_set_interface(dev->udev, 0, 0);
468 if (errCode < 0) {
469 em28xx_errdev ("cannot change alternate number to 0 (error=%i)\n",
470 errCode);
471 }
472
473 dev->users--;
474 wake_up_interruptible_nr(&dev->open, 1);
475 mutex_unlock(&dev->lock);
476 return 0;
477 }
478
479 /*
480 * em28xx_v4l2_read()
481 * will allocate buffers when called for the first time
482 */
483 static ssize_t
484 em28xx_v4l2_read(struct file *filp, char __user * buf, size_t count,
485 loff_t * f_pos)
486 {
487 struct em28xx_frame_t *f, *i;
488 unsigned long lock_flags;
489 int ret = 0;
490 struct em28xx *dev = filp->private_data;
491
492 if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
493 em28xx_videodbg("V4l2_Buf_type_videocapture is set\n");
494 }
495 if (dev->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
496 em28xx_videodbg("V4L2_BUF_TYPE_VBI_CAPTURE is set\n");
497 em28xx_videodbg("not supported yet! ...\n");
498 if (copy_to_user(buf, "", 1)) {
499 mutex_unlock(&dev->fileop_lock);
500 return -EFAULT;
501 }
502 return (1);
503 }
504 if (dev->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) {
505 em28xx_videodbg("V4L2_BUF_TYPE_SLICED_VBI_CAPTURE is set\n");
506 em28xx_videodbg("not supported yet! ...\n");
507 if (copy_to_user(buf, "", 1)) {
508 mutex_unlock(&dev->fileop_lock);
509 return -EFAULT;
510 }
511 return (1);
512 }
513
514 if (mutex_lock_interruptible(&dev->fileop_lock))
515 return -ERESTARTSYS;
516
517 if (dev->state & DEV_DISCONNECTED) {
518 em28xx_videodbg("device not present\n");
519 mutex_unlock(&dev->fileop_lock);
520 return -ENODEV;
521 }
522
523 if (dev->state & DEV_MISCONFIGURED) {
524 em28xx_videodbg("device misconfigured; close and open it again\n");
525 mutex_unlock(&dev->fileop_lock);
526 return -EIO;
527 }
528
529 if (dev->io == IO_MMAP) {
530 em28xx_videodbg ("IO method is set to mmap; close and open"
531 " the device again to choose the read method\n");
532 mutex_unlock(&dev->fileop_lock);
533 return -EINVAL;
534 }
535
536 if (dev->io == IO_NONE) {
537 if (!em28xx_request_buffers(dev, EM28XX_NUM_READ_FRAMES)) {
538 em28xx_errdev("read failed, not enough memory\n");
539 mutex_unlock(&dev->fileop_lock);
540 return -ENOMEM;
541 }
542 dev->io = IO_READ;
543 dev->stream = STREAM_ON;
544 em28xx_queue_unusedframes(dev);
545 }
546
547 if (!count) {
548 mutex_unlock(&dev->fileop_lock);
549 return 0;
550 }
551
552 if (list_empty(&dev->outqueue)) {
553 if (filp->f_flags & O_NONBLOCK) {
554 mutex_unlock(&dev->fileop_lock);
555 return -EAGAIN;
556 }
557 ret = wait_event_interruptible
558 (dev->wait_frame,
559 (!list_empty(&dev->outqueue)) ||
560 (dev->state & DEV_DISCONNECTED));
561 if (ret) {
562 mutex_unlock(&dev->fileop_lock);
563 return ret;
564 }
565 if (dev->state & DEV_DISCONNECTED) {
566 mutex_unlock(&dev->fileop_lock);
567 return -ENODEV;
568 }
569 }
570
571 f = list_entry(dev->outqueue.prev, struct em28xx_frame_t, frame);
572
573 spin_lock_irqsave(&dev->queue_lock, lock_flags);
574 list_for_each_entry(i, &dev->outqueue, frame)
575 i->state = F_UNUSED;
576 INIT_LIST_HEAD(&dev->outqueue);
577 spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
578
579 em28xx_queue_unusedframes(dev);
580
581 if (count > f->buf.length)
582 count = f->buf.length;
583
584 if (copy_to_user(buf, f->bufmem, count)) {
585 mutex_unlock(&dev->fileop_lock);
586 return -EFAULT;
587 }
588 *f_pos += count;
589
590 mutex_unlock(&dev->fileop_lock);
591
592 return count;
593 }
594
595 /*
596 * em28xx_v4l2_poll()
597 * will allocate buffers when called for the first time
598 */
599 static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait)
600 {
601 unsigned int mask = 0;
602 struct em28xx *dev = filp->private_data;
603
604 if (mutex_lock_interruptible(&dev->fileop_lock))
605 return POLLERR;
606
607 if (dev->state & DEV_DISCONNECTED) {
608 em28xx_videodbg("device not present\n");
609 } else if (dev->state & DEV_MISCONFIGURED) {
610 em28xx_videodbg("device is misconfigured; close and open it again\n");
611 } else {
612 if (dev->io == IO_NONE) {
613 if (!em28xx_request_buffers
614 (dev, EM28XX_NUM_READ_FRAMES)) {
615 em28xx_warn
616 ("poll() failed, not enough memory\n");
617 } else {
618 dev->io = IO_READ;
619 dev->stream = STREAM_ON;
620 }
621 }
622
623 if (dev->io == IO_READ) {
624 em28xx_queue_unusedframes(dev);
625 poll_wait(filp, &dev->wait_frame, wait);
626
627 if (!list_empty(&dev->outqueue))
628 mask |= POLLIN | POLLRDNORM;
629
630 mutex_unlock(&dev->fileop_lock);
631
632 return mask;
633 }
634 }
635
636 mutex_unlock(&dev->fileop_lock);
637 return POLLERR;
638 }
639
640 /*
641 * em28xx_vm_open()
642 */
643 static void em28xx_vm_open(struct vm_area_struct *vma)
644 {
645 struct em28xx_frame_t *f = vma->vm_private_data;
646 f->vma_use_count++;
647 }
648
649 /*
650 * em28xx_vm_close()
651 */
652 static void em28xx_vm_close(struct vm_area_struct *vma)
653 {
654 /* NOTE: buffers are not freed here */
655 struct em28xx_frame_t *f = vma->vm_private_data;
656 f->vma_use_count--;
657 }
658
659 static struct vm_operations_struct em28xx_vm_ops = {
660 .open = em28xx_vm_open,
661 .close = em28xx_vm_close,
662 };
663
664 /*
665 * em28xx_v4l2_mmap()
666 */
667 static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
668 {
669 unsigned long size = vma->vm_end - vma->vm_start,
670 start = vma->vm_start;
671 void *pos;
672 u32 i;
673
674 struct em28xx *dev = filp->private_data;
675
676 if (mutex_lock_interruptible(&dev->fileop_lock))
677 return -ERESTARTSYS;
678
679 if (dev->state & DEV_DISCONNECTED) {
680 em28xx_videodbg("mmap: device not present\n");
681 mutex_unlock(&dev->fileop_lock);
682 return -ENODEV;
683 }
684
685 if (dev->state & DEV_MISCONFIGURED) {
686 em28xx_videodbg ("mmap: Device is misconfigured; close and "
687 "open it again\n");
688 mutex_unlock(&dev->fileop_lock);
689 return -EIO;
690 }
691
692 if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) ||
693 size != PAGE_ALIGN(dev->frame[0].buf.length)) {
694 mutex_unlock(&dev->fileop_lock);
695 return -EINVAL;
696 }
697
698 for (i = 0; i < dev->num_frames; i++) {
699 if ((dev->frame[i].buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff)
700 break;
701 }
702 if (i == dev->num_frames) {
703 em28xx_videodbg("mmap: user supplied mapping address is out of range\n");
704 mutex_unlock(&dev->fileop_lock);
705 return -EINVAL;
706 }
707
708 /* VM_IO is eventually going to replace PageReserved altogether */
709 vma->vm_flags |= VM_IO;
710 vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
711
712 pos = dev->frame[i].bufmem;
713 while (size > 0) { /* size is page-aligned */
714 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
715 em28xx_videodbg("mmap: vm_insert_page failed\n");
716 mutex_unlock(&dev->fileop_lock);
717 return -EAGAIN;
718 }
719 start += PAGE_SIZE;
720 pos += PAGE_SIZE;
721 size -= PAGE_SIZE;
722 }
723
724 vma->vm_ops = &em28xx_vm_ops;
725 vma->vm_private_data = &dev->frame[i];
726
727 em28xx_vm_open(vma);
728 mutex_unlock(&dev->fileop_lock);
729 return 0;
730 }
731
732 /*
733 * em28xx_get_ctrl()
734 * return the current saturation, brightness or contrast, mute state
735 */
736 static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
737 {
738 switch (ctrl->id) {
739 case V4L2_CID_AUDIO_MUTE:
740 ctrl->value = dev->mute;
741 return 0;
742 case V4L2_CID_AUDIO_VOLUME:
743 ctrl->value = dev->volume;
744 return 0;
745 default:
746 return -EINVAL;
747 }
748 }
749
750 /*FIXME: should be moved to saa711x */
751 static int saa711x_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
752 {
753 s32 tmp;
754 switch (ctrl->id) {
755 case V4L2_CID_BRIGHTNESS:
756 if ((tmp = em28xx_brightness_get(dev)) < 0)
757 return -EIO;
758 ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
759 return 0;
760 case V4L2_CID_CONTRAST:
761 if ((ctrl->value = em28xx_contrast_get(dev)) < 0)
762 return -EIO;
763 return 0;
764 case V4L2_CID_SATURATION:
765 if ((ctrl->value = em28xx_saturation_get(dev)) < 0)
766 return -EIO;
767 return 0;
768 case V4L2_CID_RED_BALANCE:
769 if ((tmp = em28xx_v_balance_get(dev)) < 0)
770 return -EIO;
771 ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
772 return 0;
773 case V4L2_CID_BLUE_BALANCE:
774 if ((tmp = em28xx_u_balance_get(dev)) < 0)
775 return -EIO;
776 ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
777 return 0;
778 case V4L2_CID_GAMMA:
779 if ((ctrl->value = em28xx_gamma_get(dev)) < 0)
780 return -EIO;
781 return 0;
782 default:
783 return -EINVAL;
784 }
785 }
786
787 /*
788 * em28xx_set_ctrl()
789 * mute or set new saturation, brightness or contrast
790 */
791 static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
792 {
793 switch (ctrl->id) {
794 case V4L2_CID_AUDIO_MUTE:
795 if (ctrl->value != dev->mute) {
796 dev->mute = ctrl->value;
797 em28xx_audio_usb_mute(dev, ctrl->value);
798 return em28xx_audio_analog_set(dev);
799 }
800 return 0;
801 case V4L2_CID_AUDIO_VOLUME:
802 dev->volume = ctrl->value;
803 return em28xx_audio_analog_set(dev);
804 default:
805 return -EINVAL;
806 }
807 }
808
809 /*FIXME: should be moved to saa711x */
810 static int saa711x_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
811 {
812 switch (ctrl->id) {
813 case V4L2_CID_BRIGHTNESS:
814 return em28xx_brightness_set(dev, ctrl->value);
815 case V4L2_CID_CONTRAST:
816 return em28xx_contrast_set(dev, ctrl->value);
817 case V4L2_CID_SATURATION:
818 return em28xx_saturation_set(dev, ctrl->value);
819 case V4L2_CID_RED_BALANCE:
820 return em28xx_v_balance_set(dev, ctrl->value);
821 case V4L2_CID_BLUE_BALANCE:
822 return em28xx_u_balance_set(dev, ctrl->value);
823 case V4L2_CID_GAMMA:
824 return em28xx_gamma_set(dev, ctrl->value);
825 default:
826 return -EINVAL;
827 }
828 }
829
830 /*
831 * em28xx_stream_interrupt()
832 * stops streaming
833 */
834 static int em28xx_stream_interrupt(struct em28xx *dev)
835 {
836 int ret = 0;
837
838 /* stop reading from the device */
839
840 dev->stream = STREAM_INTERRUPT;
841 ret = wait_event_timeout(dev->wait_stream,
842 (dev->stream == STREAM_OFF) ||
843 (dev->state & DEV_DISCONNECTED),
844 EM28XX_URB_TIMEOUT);
845 if (dev->state & DEV_DISCONNECTED)
846 return -ENODEV;
847 else if (ret) {
848 dev->state |= DEV_MISCONFIGURED;
849 em28xx_videodbg("device is misconfigured; close and "
850 "open /dev/video%d again\n",
851 dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN);
852 return ret;
853 }
854
855 return 0;
856 }
857
858 static int em28xx_set_norm(struct em28xx *dev, int width, int height)
859 {
860 unsigned int hscale, vscale;
861 unsigned int maxh, maxw;
862
863 maxw = norm_maxw(dev);
864 maxh = norm_maxh(dev);
865
866 /* width must even because of the YUYV format */
867 /* height must be even because of interlacing */
868 height &= 0xfffe;
869 width &= 0xfffe;
870
871 if (height < 32)
872 height = 32;
873 if (height > maxh)
874 height = maxh;
875 if (width < 48)
876 width = 48;
877 if (width > maxw)
878 width = maxw;
879
880 if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000)
881 hscale = 0x3fff;
882 width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
883
884 if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000)
885 vscale = 0x3fff;
886 height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
887
888 /* set new image size */
889 dev->width = width;
890 dev->height = height;
891 dev->frame_size = dev->width * dev->height * 2;
892 dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
893 dev->bytesperline = dev->width * 2;
894 dev->hscale = hscale;
895 dev->vscale = vscale;
896
897 em28xx_resolution_set(dev);
898
899 return 0;
900 }
901
902 static int em28xx_get_fmt(struct em28xx *dev, struct v4l2_format *format)
903 {
904 em28xx_videodbg("VIDIOC_G_FMT: type=%s\n",
905 (format->type ==V4L2_BUF_TYPE_VIDEO_CAPTURE) ?
906 "V4L2_BUF_TYPE_VIDEO_CAPTURE" :
907 (format->type ==V4L2_BUF_TYPE_VBI_CAPTURE) ?
908 "V4L2_BUF_TYPE_VBI_CAPTURE" :
909 (format->type ==V4L2_CAP_SLICED_VBI_CAPTURE) ?
910 "V4L2_BUF_TYPE_SLICED_VBI_CAPTURE " :
911 "not supported");
912
913 switch (format->type) {
914 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
915 {
916 format->fmt.pix.width = dev->width;
917 format->fmt.pix.height = dev->height;
918 format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
919 format->fmt.pix.bytesperline = dev->bytesperline;
920 format->fmt.pix.sizeimage = dev->frame_size;
921 format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
922 format->fmt.pix.field = dev->interlaced ? V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
923
924 em28xx_videodbg("VIDIOC_G_FMT: %dx%d\n", dev->width,
925 dev->height);
926 break;
927 }
928
929 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
930 {
931 format->fmt.sliced.service_set=0;
932
933 em28xx_i2c_call_clients(dev,VIDIOC_G_FMT,format);
934
935 if (format->fmt.sliced.service_set==0)
936 return -EINVAL;
937
938 break;
939 }
940
941 default:
942 return -EINVAL;
943 }
944 return (0);
945 }
946
947 static int em28xx_set_fmt(struct em28xx *dev, unsigned int cmd, struct v4l2_format *format)
948 {
949 u32 i;
950 int ret = 0;
951 int width = format->fmt.pix.width;
952 int height = format->fmt.pix.height;
953 unsigned int hscale, vscale;
954 unsigned int maxh, maxw;
955
956 maxw = norm_maxw(dev);
957 maxh = norm_maxh(dev);
958
959 em28xx_videodbg("%s: type=%s\n",
960 cmd == VIDIOC_TRY_FMT ?
961 "VIDIOC_TRY_FMT" : "VIDIOC_S_FMT",
962 format->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ?
963 "V4L2_BUF_TYPE_VIDEO_CAPTURE" :
964 format->type == V4L2_BUF_TYPE_VBI_CAPTURE ?
965 "V4L2_BUF_TYPE_VBI_CAPTURE " :
966 "not supported");
967
968 if (format->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) {
969 em28xx_i2c_call_clients(dev,VIDIOC_G_FMT,format);
970
971 if (format->fmt.sliced.service_set==0)
972 return -EINVAL;
973
974 return 0;
975 }
976
977
978 if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
979 return -EINVAL;
980
981 em28xx_videodbg("%s: requested %dx%d\n",
982 cmd == VIDIOC_TRY_FMT ?
983 "VIDIOC_TRY_FMT" : "VIDIOC_S_FMT",
984 format->fmt.pix.width, format->fmt.pix.height);
985
986 /* FIXME: Move some code away from here */
987 /* width must even because of the YUYV format */
988 /* height must be even because of interlacing */
989 height &= 0xfffe;
990 width &= 0xfffe;
991
992 if (height < 32)
993 height = 32;
994 if (height > maxh)
995 height = maxh;
996 if (width < 48)
997 width = 48;
998 if (width > maxw)
999 width = maxw;
1000
1001 if(dev->is_em2800){
1002 /* the em2800 can only scale down to 50% */
1003 if(height % (maxh / 2))
1004 height=maxh;
1005 if(width % (maxw / 2))
1006 width=maxw;
1007 /* according to empiatech support */
1008 /* the MaxPacketSize is to small to support */
1009 /* framesizes larger than 640x480 @ 30 fps */
1010 /* or 640x576 @ 25 fps. As this would cut */
1011 /* of a part of the image we prefer */
1012 /* 360x576 or 360x480 for now */
1013 if(width == maxw && height == maxh)
1014 width /= 2;
1015 }
1016
1017 if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000)
1018 hscale = 0x3fff;
1019
1020 width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
1021
1022 if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000)
1023 vscale = 0x3fff;
1024
1025 height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
1026
1027 format->fmt.pix.width = width;
1028 format->fmt.pix.height = height;
1029 format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
1030 format->fmt.pix.bytesperline = width * 2;
1031 format->fmt.pix.sizeimage = width * 2 * height;
1032 format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1033 format->fmt.pix.field = V4L2_FIELD_INTERLACED;
1034
1035 em28xx_videodbg("%s: returned %dx%d (%d, %d)\n",
1036 cmd == VIDIOC_TRY_FMT ?
1037 "VIDIOC_TRY_FMT" :"VIDIOC_S_FMT",
1038 format->fmt.pix.width, format->fmt.pix.height, hscale, vscale);
1039
1040 if (cmd == VIDIOC_TRY_FMT)
1041 return 0;
1042
1043 for (i = 0; i < dev->num_frames; i++)
1044 if (dev->frame[i].vma_use_count) {
1045 em28xx_videodbg("VIDIOC_S_FMT failed. "
1046 "Unmap the buffers first.\n");
1047 return -EINVAL;
1048 }
1049
1050 /* stop io in case it is already in progress */
1051 if (dev->stream == STREAM_ON) {
1052 em28xx_videodbg("VIDIOC_SET_FMT: interupting stream\n");
1053 if ((ret = em28xx_stream_interrupt(dev)))
1054 return ret;
1055 }
1056
1057 em28xx_release_buffers(dev);
1058 dev->io = IO_NONE;
1059
1060 /* set new image size */
1061 dev->width = width;
1062 dev->height = height;
1063 dev->frame_size = dev->width * dev->height * 2;
1064 dev->field_size = dev->frame_size >> 1;
1065 dev->bytesperline = dev->width * 2;
1066 dev->hscale = hscale;
1067 dev->vscale = vscale;
1068 em28xx_uninit_isoc(dev);
1069 em28xx_set_alternate(dev);
1070 em28xx_capture_start(dev, 1);
1071 em28xx_resolution_set(dev);
1072 em28xx_init_isoc(dev);
1073
1074 return 0;
1075 }
1076
1077 /*
1078 * em28xx_v4l2_do_ioctl()
1079 * This function is _not_ called directly, but from
1080 * em28xx_v4l2_ioctl. Userspace
1081 * copying is done already, arg is a kernel pointer.
1082 */
1083 static int em28xx_do_ioctl(struct inode *inode, struct file *filp,
1084 struct em28xx *dev, unsigned int cmd, void *arg,
1085 v4l2_kioctl driver_ioctl)
1086 {
1087 int ret;
1088
1089 switch (cmd) {
1090 /* ---------- tv norms ---------- */
1091 case VIDIOC_ENUMSTD:
1092 {
1093 struct v4l2_standard *e = arg;
1094 unsigned int i;
1095
1096 i = e->index;
1097 if (i >= TVNORMS)
1098 return -EINVAL;
1099 ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
1100 tvnorms[e->index].name);
1101 e->index = i;
1102 if (ret < 0)
1103 return ret;
1104 return 0;
1105 }
1106 case VIDIOC_G_STD:
1107 {
1108 v4l2_std_id *id = arg;
1109
1110 *id = dev->tvnorm->id;
1111 return 0;
1112 }
1113 case VIDIOC_S_STD:
1114 {
1115 v4l2_std_id *id = arg;
1116 unsigned int i;
1117
1118 for (i = 0; i < TVNORMS; i++)
1119 if (*id == tvnorms[i].id)
1120 break;
1121 if (i == TVNORMS)
1122 for (i = 0; i < TVNORMS; i++)
1123 if (*id & tvnorms[i].id)
1124 break;
1125 if (i == TVNORMS)
1126 return -EINVAL;
1127
1128 mutex_lock(&dev->lock);
1129 dev->tvnorm = &tvnorms[i];
1130
1131 em28xx_set_norm(dev, dev->width, dev->height);
1132
1133 em28xx_i2c_call_clients(dev, DECODER_SET_NORM,
1134 &tvnorms[i].mode);
1135 em28xx_i2c_call_clients(dev, VIDIOC_S_STD,
1136 &dev->tvnorm->id);
1137
1138 mutex_unlock(&dev->lock);
1139
1140 return 0;
1141 }
1142
1143 /* ------ input switching ---------- */
1144 case VIDIOC_ENUMINPUT:
1145 {
1146 struct v4l2_input *i = arg;
1147 unsigned int n;
1148 static const char *iname[] = {
1149 [EM28XX_VMUX_COMPOSITE1] = "Composite1",
1150 [EM28XX_VMUX_COMPOSITE2] = "Composite2",
1151 [EM28XX_VMUX_COMPOSITE3] = "Composite3",
1152 [EM28XX_VMUX_COMPOSITE4] = "Composite4",
1153 [EM28XX_VMUX_SVIDEO] = "S-Video",
1154 [EM28XX_VMUX_TELEVISION] = "Television",
1155 [EM28XX_VMUX_CABLE] = "Cable TV",
1156 [EM28XX_VMUX_DVB] = "DVB",
1157 [EM28XX_VMUX_DEBUG] = "for debug only",
1158 };
1159
1160 n = i->index;
1161 if (n >= MAX_EM28XX_INPUT)
1162 return -EINVAL;
1163 if (0 == INPUT(n)->type)
1164 return -EINVAL;
1165 memset(i, 0, sizeof(*i));
1166 i->index = n;
1167 i->type = V4L2_INPUT_TYPE_CAMERA;
1168 strcpy(i->name, iname[INPUT(n)->type]);
1169 if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
1170 (EM28XX_VMUX_CABLE == INPUT(n)->type))
1171 i->type = V4L2_INPUT_TYPE_TUNER;
1172 for (n = 0; n < ARRAY_SIZE(tvnorms); n++)
1173 i->std |= tvnorms[n].id;
1174 return 0;
1175 }
1176 case VIDIOC_G_INPUT:
1177 {
1178 int *i = arg;
1179 *i = dev->ctl_input;
1180
1181 return 0;
1182 }
1183 case VIDIOC_S_INPUT:
1184 {
1185 int *index = arg;
1186
1187 if (*index >= MAX_EM28XX_INPUT)
1188 return -EINVAL;
1189 if (0 == INPUT(*index)->type)
1190 return -EINVAL;
1191
1192 mutex_lock(&dev->lock);
1193 video_mux(dev, *index);
1194 mutex_unlock(&dev->lock);
1195
1196 return 0;
1197 }
1198 case VIDIOC_G_AUDIO:
1199 {
1200 struct v4l2_audio *a = arg;
1201 unsigned int index = a->index;
1202
1203 if (a->index > 1)
1204 return -EINVAL;
1205 memset(a, 0, sizeof(*a));
1206 index = dev->ctl_ainput;
1207
1208 if (index == 0) {
1209 strcpy(a->name, "Television");
1210 } else {
1211 strcpy(a->name, "Line In");
1212 }
1213 a->capability = V4L2_AUDCAP_STEREO;
1214 a->index = index;
1215 return 0;
1216 }
1217 case VIDIOC_S_AUDIO:
1218 {
1219 struct v4l2_audio *a = arg;
1220
1221 if (a->index != dev->ctl_ainput)
1222 return -EINVAL;
1223
1224 return 0;
1225 }
1226
1227 /* --- controls ---------------------------------------------- */
1228 case VIDIOC_QUERYCTRL:
1229 {
1230 struct v4l2_queryctrl *qc = arg;
1231 int i, id=qc->id;
1232
1233 memset(qc,0,sizeof(*qc));
1234 qc->id=id;
1235
1236 if (!dev->has_msp34xx) {
1237 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1238 if (qc->id && qc->id == em28xx_qctrl[i].id) {
1239 memcpy(qc, &(em28xx_qctrl[i]),
1240 sizeof(*qc));
1241 return 0;
1242 }
1243 }
1244 }
1245 if (dev->decoder == EM28XX_TVP5150) {
1246 em28xx_i2c_call_clients(dev,cmd,qc);
1247 if (qc->type)
1248 return 0;
1249 else
1250 return -EINVAL;
1251 }
1252 for (i = 0; i < ARRAY_SIZE(saa711x_qctrl); i++) {
1253 if (qc->id && qc->id == saa711x_qctrl[i].id) {
1254 memcpy(qc, &(saa711x_qctrl[i]),
1255 sizeof(*qc));
1256 return 0;
1257 }
1258 }
1259
1260 return -EINVAL;
1261 }
1262 case VIDIOC_G_CTRL:
1263 {
1264 struct v4l2_control *ctrl = arg;
1265 int retval=-EINVAL;
1266
1267 if (!dev->has_msp34xx)
1268 retval=em28xx_get_ctrl(dev, ctrl);
1269 if (retval==-EINVAL) {
1270 if (dev->decoder == EM28XX_TVP5150) {
1271 em28xx_i2c_call_clients(dev,cmd,arg);
1272 return 0;
1273 }
1274
1275 return saa711x_get_ctrl(dev, ctrl);
1276 } else return retval;
1277 }
1278 case VIDIOC_S_CTRL:
1279 {
1280 struct v4l2_control *ctrl = arg;
1281 u8 i;
1282
1283 if (!dev->has_msp34xx){
1284 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1285 if (ctrl->id == em28xx_qctrl[i].id) {
1286 if (ctrl->value <
1287 em28xx_qctrl[i].minimum
1288 || ctrl->value >
1289 em28xx_qctrl[i].maximum)
1290 return -ERANGE;
1291 return em28xx_set_ctrl(dev, ctrl);
1292 }
1293 }
1294 }
1295
1296 if (dev->decoder == EM28XX_TVP5150) {
1297 em28xx_i2c_call_clients(dev,cmd,arg);
1298 return 0;
1299 } else if (!dev->has_msp34xx) {
1300 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1301 if (ctrl->id == em28xx_qctrl[i].id) {
1302 if (ctrl->value <
1303 em28xx_qctrl[i].minimum
1304 || ctrl->value >
1305 em28xx_qctrl[i].maximum)
1306 return -ERANGE;
1307 return em28xx_set_ctrl(dev, ctrl);
1308 }
1309 }
1310 for (i = 0; i < ARRAY_SIZE(saa711x_qctrl); i++) {
1311 if (ctrl->id == saa711x_qctrl[i].id) {
1312 if (ctrl->value <
1313 saa711x_qctrl[i].minimum
1314 || ctrl->value >
1315 saa711x_qctrl[i].maximum)
1316 return -ERANGE;
1317 return saa711x_set_ctrl(dev, ctrl);
1318 }
1319 }
1320 }
1321
1322 return -EINVAL;
1323 }
1324 /* --- tuner ioctls ------------------------------------------ */
1325 case VIDIOC_G_TUNER:
1326 {
1327 struct v4l2_tuner *t = arg;
1328 int status = 0;
1329
1330 if (0 != t->index)
1331 return -EINVAL;
1332
1333 memset(t, 0, sizeof(*t));
1334 strcpy(t->name, "Tuner");
1335 t->type = V4L2_TUNER_ANALOG_TV;
1336 t->capability = V4L2_TUNER_CAP_NORM;
1337 t->rangehigh = 0xffffffffUL; /* FIXME: set correct range */
1338 /* t->signal = 0xffff;*/
1339 /* em28xx_i2c_call_clients(dev,VIDIOC_G_TUNER,t);*/
1340 /* No way to get signal strength? */
1341 mutex_lock(&dev->lock);
1342 em28xx_i2c_call_clients(dev, DECODER_GET_STATUS,
1343 &status);
1344 mutex_unlock(&dev->lock);
1345 t->signal =
1346 (status & DECODER_STATUS_GOOD) != 0 ? 0xffff : 0;
1347
1348 em28xx_videodbg("VIDIO_G_TUNER: signal=%x, afc=%x\n", t->signal,
1349 t->afc);
1350 return 0;
1351 }
1352 case VIDIOC_S_TUNER:
1353 {
1354 struct v4l2_tuner *t = arg;
1355 int status = 0;
1356
1357 if (0 != t->index)
1358 return -EINVAL;
1359 memset(t, 0, sizeof(*t));
1360 strcpy(t->name, "Tuner");
1361 t->type = V4L2_TUNER_ANALOG_TV;
1362 t->capability = V4L2_TUNER_CAP_NORM;
1363 t->rangehigh = 0xffffffffUL; /* FIXME: set correct range */
1364 /* t->signal = 0xffff; */
1365 /* No way to get signal strength? */
1366 mutex_lock(&dev->lock);
1367 em28xx_i2c_call_clients(dev, DECODER_GET_STATUS,
1368 &status);
1369 mutex_unlock(&dev->lock);
1370 t->signal =
1371 (status & DECODER_STATUS_GOOD) != 0 ? 0xffff : 0;
1372
1373 em28xx_videodbg("VIDIO_S_TUNER: signal=%x, afc=%x\n",
1374 t->signal, t->afc);
1375 return 0;
1376 }
1377 case VIDIOC_G_FREQUENCY:
1378 {
1379 struct v4l2_frequency *f = arg;
1380
1381 memset(f, 0, sizeof(*f));
1382 f->type = V4L2_TUNER_ANALOG_TV;
1383 f->frequency = dev->ctl_freq;
1384
1385 return 0;
1386 }
1387 case VIDIOC_S_FREQUENCY:
1388 {
1389 struct v4l2_frequency *f = arg;
1390
1391 if (0 != f->tuner)
1392 return -EINVAL;
1393
1394 if (V4L2_TUNER_ANALOG_TV != f->type)
1395 return -EINVAL;
1396
1397 mutex_lock(&dev->lock);
1398 dev->ctl_freq = f->frequency;
1399 em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f);
1400 mutex_unlock(&dev->lock);
1401 return 0;
1402 }
1403 case VIDIOC_CROPCAP:
1404 {
1405 struct v4l2_cropcap *cc = arg;
1406
1407 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1408 return -EINVAL;
1409 cc->bounds.left = 0;
1410 cc->bounds.top = 0;
1411 cc->bounds.width = dev->width;
1412 cc->bounds.height = dev->height;
1413 cc->defrect = cc->bounds;
1414 cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1415 cc->pixelaspect.denominator = 59;
1416 return 0;
1417 }
1418 case VIDIOC_STREAMON:
1419 {
1420 int *type = arg;
1421
1422 if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
1423 || dev->io != IO_MMAP)
1424 return -EINVAL;
1425
1426 if (list_empty(&dev->inqueue))
1427 return -EINVAL;
1428
1429 dev->stream = STREAM_ON; /* FIXME: Start video capture here? */
1430
1431 em28xx_videodbg("VIDIOC_STREAMON: starting stream\n");
1432
1433 return 0;
1434 }
1435 case VIDIOC_STREAMOFF:
1436 {
1437 int *type = arg;
1438 int ret;
1439
1440 if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
1441 || dev->io != IO_MMAP)
1442 return -EINVAL;
1443
1444 if (dev->stream == STREAM_ON) {
1445 em28xx_videodbg ("VIDIOC_STREAMOFF: interrupting stream\n");
1446 if ((ret = em28xx_stream_interrupt(dev)))
1447 return ret;
1448 }
1449 em28xx_empty_framequeues(dev);
1450
1451 return 0;
1452 }
1453 default:
1454 return v4l_compat_translate_ioctl(inode, filp, cmd, arg,
1455 driver_ioctl);
1456 }
1457 return 0;
1458 }
1459
1460 /*
1461 * em28xx_v4l2_do_ioctl()
1462 * This function is _not_ called directly, but from
1463 * em28xx_v4l2_ioctl. Userspace
1464 * copying is done already, arg is a kernel pointer.
1465 */
1466 static int em28xx_video_do_ioctl(struct inode *inode, struct file *filp,
1467 unsigned int cmd, void *arg)
1468 {
1469 struct em28xx *dev = filp->private_data;
1470
1471 if (!dev)
1472 return -ENODEV;
1473
1474 if (video_debug > 1)
1475 v4l_print_ioctl(dev->name,cmd);
1476
1477 switch (cmd) {
1478
1479 /* --- capabilities ------------------------------------------ */
1480 case VIDIOC_QUERYCAP:
1481 {
1482 struct v4l2_capability *cap = arg;
1483
1484 memset(cap, 0, sizeof(*cap));
1485 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1486 strlcpy(cap->card, em28xx_boards[dev->model].name,
1487 sizeof(cap->card));
1488 strlcpy(cap->bus_info, dev->udev->dev.bus_id,
1489 sizeof(cap->bus_info));
1490 cap->version = EM28XX_VERSION_CODE;
1491 cap->capabilities =
1492 V4L2_CAP_SLICED_VBI_CAPTURE |
1493 V4L2_CAP_VIDEO_CAPTURE |
1494 V4L2_CAP_AUDIO |
1495 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1496 if (dev->has_tuner)
1497 cap->capabilities |= V4L2_CAP_TUNER;
1498 return 0;
1499 }
1500 /* --- capture ioctls ---------------------------------------- */
1501 case VIDIOC_ENUM_FMT:
1502 {
1503 struct v4l2_fmtdesc *fmtd = arg;
1504
1505 if (fmtd->index != 0)
1506 return -EINVAL;
1507 memset(fmtd, 0, sizeof(*fmtd));
1508 fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1509 strcpy(fmtd->description, "Packed YUY2");
1510 fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
1511 memset(fmtd->reserved, 0, sizeof(fmtd->reserved));
1512 return 0;
1513 }
1514 case VIDIOC_G_FMT:
1515 return em28xx_get_fmt(dev, (struct v4l2_format *) arg);
1516
1517 case VIDIOC_TRY_FMT:
1518 case VIDIOC_S_FMT:
1519 return em28xx_set_fmt(dev, cmd, (struct v4l2_format *)arg);
1520
1521 case VIDIOC_REQBUFS:
1522 {
1523 struct v4l2_requestbuffers *rb = arg;
1524 u32 i;
1525 int ret;
1526
1527 if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1528 rb->memory != V4L2_MEMORY_MMAP)
1529 return -EINVAL;
1530
1531 if (dev->io == IO_READ) {
1532 em28xx_videodbg ("method is set to read;"
1533 " close and open the device again to"
1534 " choose the mmap I/O method\n");
1535 return -EINVAL;
1536 }
1537
1538 for (i = 0; i < dev->num_frames; i++)
1539 if (dev->frame[i].vma_use_count) {
1540 em28xx_videodbg ("VIDIOC_REQBUFS failed; previous buffers are still mapped\n");
1541 return -EINVAL;
1542 }
1543
1544 if (dev->stream == STREAM_ON) {
1545 em28xx_videodbg("VIDIOC_REQBUFS: interrupting stream\n");
1546 if ((ret = em28xx_stream_interrupt(dev)))
1547 return ret;
1548 }
1549
1550 em28xx_empty_framequeues(dev);
1551
1552 em28xx_release_buffers(dev);
1553 if (rb->count)
1554 rb->count =
1555 em28xx_request_buffers(dev, rb->count);
1556
1557 dev->frame_current = NULL;
1558
1559 em28xx_videodbg ("VIDIOC_REQBUFS: setting io method to mmap: num bufs %i\n",
1560 rb->count);
1561 dev->io = rb->count ? IO_MMAP : IO_NONE;
1562 return 0;
1563 }
1564 case VIDIOC_QUERYBUF:
1565 {
1566 struct v4l2_buffer *b = arg;
1567
1568 if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1569 b->index >= dev->num_frames || dev->io != IO_MMAP)
1570 return -EINVAL;
1571
1572 memcpy(b, &dev->frame[b->index].buf, sizeof(*b));
1573
1574 if (dev->frame[b->index].vma_use_count) {
1575 b->flags |= V4L2_BUF_FLAG_MAPPED;
1576 }
1577 if (dev->frame[b->index].state == F_DONE)
1578 b->flags |= V4L2_BUF_FLAG_DONE;
1579 else if (dev->frame[b->index].state != F_UNUSED)
1580 b->flags |= V4L2_BUF_FLAG_QUEUED;
1581 return 0;
1582 }
1583 case VIDIOC_QBUF:
1584 {
1585 struct v4l2_buffer *b = arg;
1586 unsigned long lock_flags;
1587
1588 if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1589 b->index >= dev->num_frames || dev->io != IO_MMAP) {
1590 return -EINVAL;
1591 }
1592
1593 if (dev->frame[b->index].state != F_UNUSED) {
1594 return -EAGAIN;
1595 }
1596 dev->frame[b->index].state = F_QUEUED;
1597
1598 /* add frame to fifo */
1599 spin_lock_irqsave(&dev->queue_lock, lock_flags);
1600 list_add_tail(&dev->frame[b->index].frame,
1601 &dev->inqueue);
1602 spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
1603
1604 return 0;
1605 }
1606 case VIDIOC_DQBUF:
1607 {
1608 struct v4l2_buffer *b = arg;
1609 struct em28xx_frame_t *f;
1610 unsigned long lock_flags;
1611 int ret = 0;
1612
1613 if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE
1614 || dev->io != IO_MMAP)
1615 return -EINVAL;
1616
1617 if (list_empty(&dev->outqueue)) {
1618 if (dev->stream == STREAM_OFF)
1619 return -EINVAL;
1620 if (filp->f_flags & O_NONBLOCK)
1621 return -EAGAIN;
1622 ret = wait_event_interruptible
1623 (dev->wait_frame,
1624 (!list_empty(&dev->outqueue)) ||
1625 (dev->state & DEV_DISCONNECTED));
1626 if (ret)
1627 return ret;
1628 if (dev->state & DEV_DISCONNECTED)
1629 return -ENODEV;
1630 }
1631
1632 spin_lock_irqsave(&dev->queue_lock, lock_flags);
1633 f = list_entry(dev->outqueue.next,
1634 struct em28xx_frame_t, frame);
1635 list_del(dev->outqueue.next);
1636 spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
1637
1638 f->state = F_UNUSED;
1639 memcpy(b, &f->buf, sizeof(*b));
1640
1641 if (f->vma_use_count)
1642 b->flags |= V4L2_BUF_FLAG_MAPPED;
1643
1644 return 0;
1645 }
1646 default:
1647 return em28xx_do_ioctl(inode, filp, dev, cmd, arg,
1648 em28xx_video_do_ioctl);
1649 }
1650 return 0;
1651 }
1652
1653 /*
1654 * em28xx_v4l2_ioctl()
1655 * handle v4l2 ioctl the main action happens in em28xx_v4l2_do_ioctl()
1656 */
1657 static int em28xx_v4l2_ioctl(struct inode *inode, struct file *filp,
1658 unsigned int cmd, unsigned long arg)
1659 {
1660 int ret = 0;
1661 struct em28xx *dev = filp->private_data;
1662
1663 if (mutex_lock_interruptible(&dev->fileop_lock))
1664 return -ERESTARTSYS;
1665
1666 if (dev->state & DEV_DISCONNECTED) {
1667 em28xx_errdev("v4l2 ioctl: device not present\n");
1668 mutex_unlock(&dev->fileop_lock);
1669 return -ENODEV;
1670 }
1671
1672 if (dev->state & DEV_MISCONFIGURED) {
1673 em28xx_errdev
1674 ("v4l2 ioctl: device is misconfigured; close and open it again\n");
1675 mutex_unlock(&dev->fileop_lock);
1676 return -EIO;
1677 }
1678
1679 ret = video_usercopy(inode, filp, cmd, arg, em28xx_video_do_ioctl);
1680
1681 mutex_unlock(&dev->fileop_lock);
1682
1683 return ret;
1684 }
1685
1686 static struct file_operations em28xx_v4l_fops = {
1687 .owner = THIS_MODULE,
1688 .open = em28xx_v4l2_open,
1689 .release = em28xx_v4l2_close,
1690 .ioctl = em28xx_v4l2_ioctl,
1691 .read = em28xx_v4l2_read,
1692 .poll = em28xx_v4l2_poll,
1693 .mmap = em28xx_v4l2_mmap,
1694 .llseek = no_llseek,
1695 .compat_ioctl = v4l_compat_ioctl32,
1696
1697 };
1698
1699 /******************************** usb interface *****************************************/
1700
1701 /*
1702 * em28xx_init_dev()
1703 * allocates and inits the device structs, registers i2c bus and v4l device
1704 */
1705 static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
1706 int minor, int model)
1707 {
1708 struct em28xx *dev = *devhandle;
1709 int retval = -ENOMEM;
1710 int errCode, i;
1711 unsigned int maxh, maxw;
1712
1713 dev->udev = udev;
1714 dev->model = model;
1715 mutex_init(&dev->lock);
1716 init_waitqueue_head(&dev->open);
1717
1718 dev->em28xx_write_regs = em28xx_write_regs;
1719 dev->em28xx_read_reg = em28xx_read_reg;
1720 dev->em28xx_read_reg_req_len = em28xx_read_reg_req_len;
1721 dev->em28xx_write_regs_req = em28xx_write_regs_req;
1722 dev->em28xx_read_reg_req = em28xx_read_reg_req;
1723 dev->is_em2800 = em28xx_boards[model].is_em2800;
1724 dev->has_tuner = em28xx_boards[model].has_tuner;
1725 dev->has_msp34xx = em28xx_boards[model].has_msp34xx;
1726 dev->tda9887_conf = em28xx_boards[model].tda9887_conf;
1727 dev->decoder = em28xx_boards[model].decoder;
1728
1729 if (tuner >= 0)
1730 dev->tuner_type = tuner;
1731 else
1732 dev->tuner_type = em28xx_boards[model].tuner_type;
1733
1734 dev->video_inputs = em28xx_boards[model].vchannels;
1735
1736 for (i = 0; i < TVNORMS; i++)
1737 if (em28xx_boards[model].norm == tvnorms[i].mode)
1738 break;
1739 if (i == TVNORMS)
1740 i = 0;
1741
1742 dev->tvnorm = &tvnorms[i]; /* set default norm */
1743
1744 em28xx_videodbg("tvnorm=%s\n", dev->tvnorm->name);
1745
1746 maxw = norm_maxw(dev);
1747 maxh = norm_maxh(dev);
1748
1749 /* set default image size */
1750 dev->width = maxw;
1751 dev->height = maxh;
1752 dev->interlaced = EM28XX_INTERLACED_DEFAULT;
1753 dev->field_size = dev->width * dev->height;
1754 dev->frame_size =
1755 dev->interlaced ? dev->field_size << 1 : dev->field_size;
1756 dev->bytesperline = dev->width * 2;
1757 dev->hscale = 0;
1758 dev->vscale = 0;
1759 dev->ctl_input = 2;
1760
1761 /* setup video picture settings for saa7113h */
1762 memset(&dev->vpic, 0, sizeof(dev->vpic));
1763 dev->vpic.colour = 128 << 8;
1764 dev->vpic.hue = 128 << 8;
1765 dev->vpic.brightness = 128 << 8;
1766 dev->vpic.contrast = 192 << 8;
1767 dev->vpic.whiteness = 128 << 8; /* This one isn't used */
1768 dev->vpic.depth = 16;
1769 dev->vpic.palette = VIDEO_PALETTE_YUV422;
1770
1771 em28xx_pre_card_setup(dev);
1772 #ifdef CONFIG_MODULES
1773 /* request some modules */
1774 if (dev->decoder == EM28XX_SAA7113 || dev->decoder == EM28XX_SAA7114)
1775 request_module("saa711x");
1776 if (dev->decoder == EM28XX_TVP5150)
1777 request_module("tvp5150");
1778 if (dev->has_tuner)
1779 request_module("tuner");
1780 if (dev->tda9887_conf)
1781 request_module("tda9887");
1782 #endif
1783 errCode = em28xx_config(dev);
1784 if (errCode) {
1785 em28xx_errdev("error configuring device\n");
1786 kfree(dev);
1787 em28xx_devused&=~(1<<dev->devno);
1788 return -ENOMEM;
1789 }
1790
1791 mutex_lock(&dev->lock);
1792 /* register i2c bus */
1793 em28xx_i2c_register(dev);
1794
1795 /* Do board specific init and eeprom reading */
1796 em28xx_card_setup(dev);
1797
1798 /* configure the device */
1799 em28xx_config_i2c(dev);
1800
1801 mutex_unlock(&dev->lock);
1802
1803 errCode = em28xx_config(dev);
1804
1805 #ifdef CONFIG_MODULES
1806 if (dev->has_msp34xx)
1807 request_module("msp3400");
1808 #endif
1809 /* allocate and fill v4l2 device struct */
1810 dev->vdev = video_device_alloc();
1811 if (NULL == dev->vdev) {
1812 em28xx_errdev("cannot allocate video_device.\n");
1813 kfree(dev);
1814 em28xx_devused&=~(1<<dev->devno);
1815 return -ENOMEM;
1816 }
1817
1818 dev->vbi_dev = video_device_alloc();
1819 if (NULL == dev->vbi_dev) {
1820 em28xx_errdev("cannot allocate video_device.\n");
1821 kfree(dev->vdev);
1822 kfree(dev);
1823 em28xx_devused&=~(1<<dev->devno);
1824 return -ENOMEM;
1825 }
1826
1827 /* Fills VBI device info */
1828 dev->vbi_dev->type = VFL_TYPE_VBI;
1829 dev->vbi_dev->hardware = 0;
1830 dev->vbi_dev->fops = &em28xx_v4l_fops;
1831 dev->vbi_dev->minor = -1;
1832 dev->vbi_dev->dev = &dev->udev->dev;
1833 dev->vbi_dev->release = video_device_release;
1834 snprintf(dev->vbi_dev->name, sizeof(dev->vbi_dev->name), "%s#%d %s",
1835 "em28xx",dev->devno,"vbi");
1836
1837 /* Fills CAPTURE device info */
1838 dev->vdev->type = VID_TYPE_CAPTURE;
1839 if (dev->has_tuner)
1840 dev->vdev->type |= VID_TYPE_TUNER;
1841 dev->vdev->hardware = 0;
1842 dev->vdev->fops = &em28xx_v4l_fops;
1843 dev->vdev->minor = -1;
1844 dev->vdev->dev = &dev->udev->dev;
1845 dev->vdev->release = video_device_release;
1846 snprintf(dev->vdev->name, sizeof(dev->vbi_dev->name), "%s#%d %s",
1847 "em28xx",dev->devno,"video");
1848
1849 list_add_tail(&dev->devlist,&em28xx_devlist);
1850
1851 /* register v4l2 device */
1852 mutex_lock(&dev->lock);
1853 if ((retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
1854 video_nr[dev->devno]))) {
1855 em28xx_errdev("unable to register video device (error=%i).\n",
1856 retval);
1857 mutex_unlock(&dev->lock);
1858 list_del(&dev->devlist);
1859 video_device_release(dev->vdev);
1860 kfree(dev);
1861 em28xx_devused&=~(1<<dev->devno);
1862 return -ENODEV;
1863 }
1864
1865 if (video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
1866 vbi_nr[dev->devno]) < 0) {
1867 printk("unable to register vbi device\n");
1868 mutex_unlock(&dev->lock);
1869 list_del(&dev->devlist);
1870 video_device_release(dev->vbi_dev);
1871 video_device_release(dev->vdev);
1872 kfree(dev);
1873 em28xx_devused&=~(1<<dev->devno);
1874 return -ENODEV;
1875 } else {
1876 printk("registered VBI\n");
1877 }
1878
1879 if (dev->has_msp34xx) {
1880 /* Send a reset to other chips via gpio */
1881 em28xx_write_regs_req(dev, 0x00, 0x08, "\xf7", 1);
1882 udelay(2500);
1883 em28xx_write_regs_req(dev, 0x00, 0x08, "\xff", 1);
1884 udelay(2500);
1885
1886 }
1887 video_mux(dev, 0);
1888
1889 mutex_unlock(&dev->lock);
1890
1891 em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
1892 dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN,
1893 dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN);
1894
1895 return 0;
1896 }
1897
1898 /*
1899 * em28xx_usb_probe()
1900 * checks for supported devices
1901 */
1902 static int em28xx_usb_probe(struct usb_interface *interface,
1903 const struct usb_device_id *id)
1904 {
1905 const struct usb_endpoint_descriptor *endpoint;
1906 struct usb_device *udev;
1907 struct usb_interface *uif;
1908 struct em28xx *dev = NULL;
1909 int retval = -ENODEV;
1910 int model,i,nr,ifnum;
1911
1912 udev = usb_get_dev(interface_to_usbdev(interface));
1913 ifnum = interface->altsetting[0].desc.bInterfaceNumber;
1914
1915 /* Check to see next free device and mark as used */
1916 nr=find_first_zero_bit(&em28xx_devused,EM28XX_MAXBOARDS);
1917 em28xx_devused|=1<<nr;
1918
1919 /* Don't register audio interfaces */
1920 if (interface->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) {
1921 em28xx_err(DRIVER_NAME " audio device (%04x:%04x): interface %i, class %i\n",
1922 udev->descriptor.idVendor,udev->descriptor.idProduct,
1923 ifnum,
1924 interface->altsetting[0].desc.bInterfaceClass);
1925
1926 em28xx_devused&=~(1<<nr);
1927 return -ENODEV;
1928 }
1929
1930 em28xx_err(DRIVER_NAME " new video device (%04x:%04x): interface %i, class %i\n",
1931 udev->descriptor.idVendor,udev->descriptor.idProduct,
1932 ifnum,
1933 interface->altsetting[0].desc.bInterfaceClass);
1934
1935 endpoint = &interface->cur_altsetting->endpoint[1].desc;
1936
1937 /* check if the the device has the iso in endpoint at the correct place */
1938 if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
1939 USB_ENDPOINT_XFER_ISOC) {
1940 em28xx_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n");
1941 em28xx_devused&=~(1<<nr);
1942 return -ENODEV;
1943 }
1944 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
1945 em28xx_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n");
1946 em28xx_devused&=~(1<<nr);
1947 return -ENODEV;
1948 }
1949
1950 model=id->driver_info;
1951
1952 if (nr > EM28XX_MAXBOARDS) {
1953 printk (DRIVER_NAME ": Supports only %i em28xx boards.\n",EM28XX_MAXBOARDS);
1954 em28xx_devused&=~(1<<nr);
1955 return -ENOMEM;
1956 }
1957
1958 /* allocate memory for our device state and initialize it */
1959 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1960 if (dev == NULL) {
1961 em28xx_err(DRIVER_NAME ": out of memory!\n");
1962 em28xx_devused&=~(1<<nr);
1963 return -ENOMEM;
1964 }
1965
1966 snprintf(dev->name, 29, "em28xx #%d", nr);
1967 dev->devno=nr;
1968
1969 /* compute alternate max packet sizes */
1970 uif = udev->actconfig->interface[0];
1971
1972 dev->num_alt=uif->num_altsetting;
1973 em28xx_info("Alternate settings: %i\n",dev->num_alt);
1974 // dev->alt_max_pkt_size = kmalloc(sizeof(*dev->alt_max_pkt_size)*
1975 dev->alt_max_pkt_size = kmalloc(32*
1976 dev->num_alt,GFP_KERNEL);
1977 if (dev->alt_max_pkt_size == NULL) {
1978 em28xx_errdev("out of memory!\n");
1979 em28xx_devused&=~(1<<nr);
1980 return -ENOMEM;
1981 }
1982
1983 for (i = 0; i < dev->num_alt ; i++) {
1984 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1985 wMaxPacketSize);
1986 dev->alt_max_pkt_size[i] =
1987 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1988 em28xx_info("Alternate setting %i, max size= %i\n",i,
1989 dev->alt_max_pkt_size[i]);
1990 }
1991
1992 if ((card[nr]>=0)&&(card[nr]<em28xx_bcount))
1993 model=card[nr];
1994
1995 if ((model==EM2800_BOARD_UNKNOWN)||(model==EM2820_BOARD_UNKNOWN)) {
1996 em28xx_errdev( "Your board has no eeprom inside it and thus can't\n"
1997 "%s: be autodetected. Please pass card=<n> insmod option to\n"
1998 "%s: workaround that. Redirect complaints to the vendor of\n"
1999 "%s: the TV card. Generic type will be used."
2000 "%s: Best regards,\n"
2001 "%s: -- tux\n",
2002 dev->name,dev->name,dev->name,dev->name,dev->name);
2003 em28xx_errdev("%s: Here is a list of valid choices for the card=<n> insmod option:\n",
2004 dev->name);
2005 for (i = 0; i < em28xx_bcount; i++) {
2006 em28xx_errdev(" card=%d -> %s\n", i,
2007 em28xx_boards[i].name);
2008 }
2009 }
2010
2011 /* allocate device struct */
2012 retval = em28xx_init_dev(&dev, udev, nr, model);
2013 if (retval)
2014 return retval;
2015
2016 em28xx_info("Found %s\n", em28xx_boards[model].name);
2017
2018 /* save our data pointer in this interface device */
2019 usb_set_intfdata(interface, dev);
2020 return 0;
2021 }
2022
2023 /*
2024 * em28xx_usb_disconnect()
2025 * called when the device gets diconencted
2026 * video device will be unregistered on v4l2_close in case it is still open
2027 */
2028 static void em28xx_usb_disconnect(struct usb_interface *interface)
2029 {
2030 struct em28xx *dev = usb_get_intfdata(interface);
2031 usb_set_intfdata(interface, NULL);
2032
2033 if (!dev)
2034 return;
2035
2036 down_write(&em28xx_disconnect);
2037
2038 mutex_lock(&dev->lock);
2039
2040 em28xx_info("disconnecting %s\n", dev->vdev->name);
2041
2042 wake_up_interruptible_all(&dev->open);
2043
2044 if (dev->users) {
2045 em28xx_warn
2046 ("device /dev/video%d is open! Deregistration and memory "
2047 "deallocation are deferred on close.\n",
2048 dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN);
2049
2050 dev->state |= DEV_MISCONFIGURED;
2051 em28xx_uninit_isoc(dev);
2052 dev->state |= DEV_DISCONNECTED;
2053 wake_up_interruptible(&dev->wait_frame);
2054 wake_up_interruptible(&dev->wait_stream);
2055 } else {
2056 dev->state |= DEV_DISCONNECTED;
2057 em28xx_release_resources(dev);
2058 }
2059
2060 mutex_unlock(&dev->lock);
2061
2062 if (!dev->users) {
2063 kfree(dev->alt_max_pkt_size);
2064 kfree(dev);
2065 }
2066
2067 up_write(&em28xx_disconnect);
2068 }
2069
2070 static struct usb_driver em28xx_usb_driver = {
2071 .name = "em28xx",
2072 .probe = em28xx_usb_probe,
2073 .disconnect = em28xx_usb_disconnect,
2074 .id_table = em28xx_id_table,
2075 };
2076
2077 static int __init em28xx_module_init(void)
2078 {
2079 int result;
2080
2081 printk(KERN_INFO DRIVER_NAME " v4l2 driver version %d.%d.%d loaded\n",
2082 (EM28XX_VERSION_CODE >> 16) & 0xff,
2083 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
2084 #ifdef SNAPSHOT
2085 printk(KERN_INFO DRIVER_NAME " snapshot date %04d-%02d-%02d\n",
2086 SNAPSHOT / 10000, (SNAPSHOT / 100) % 100, SNAPSHOT % 100);
2087 #endif
2088
2089 /* register this driver with the USB subsystem */
2090 result = usb_register(&em28xx_usb_driver);
2091 if (result)
2092 em28xx_err(DRIVER_NAME
2093 " usb_register failed. Error number %d.\n", result);
2094
2095 return result;
2096 }
2097
2098 static void __exit em28xx_module_exit(void)
2099 {
2100 /* deregister this driver with the USB subsystem */
2101 usb_deregister(&em28xx_usb_driver);
2102 }
2103
2104 module_init(em28xx_module_init);
2105 module_exit(em28xx_module_exit);
x86 "subsystem" repository