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V4L/DVB (3344a): Conversions from kmalloc+memset to k(z|c)alloc
[deliverable/linux.git] / drivers / media / video / em28xx / em28xx-video.c
CommitLineData
a6c2ba28 1/*
f7abcd38 2 em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB video capture devices
a6c2ba28 3
f7abcd38
MCC		 4 Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
5 Markus Rechberger <mrechberger@gmail.com>
4ac97914 6 Mauro Carvalho Chehab <mchehab@brturbo.com.br>
f7abcd38 7 Sascha Sommer <saschasommer@freenet.de>
a6c2ba28 8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 */
23
24#include <linux/init.h>
25#include <linux/list.h>
26#include <linux/module.h>
27#include <linux/kernel.h>
28#include <linux/usb.h>
a6c2ba28 29#include <linux/i2c.h>
b296fc60 30#include <linux/version.h>
a6c2ba28 31#include <linux/video_decoder.h>
32
f7abcd38 33#include "em28xx.h"
d5e52653 34#include <media/tuner.h>
c0477ad9 35#include <media/v4l2-common.h>
a6c2ba28 36
f7abcd38
MCC		 37#define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
38 "Markus Rechberger <mrechberger@gmail.com>, " \
39 "Mauro Carvalho Chehab <mchehab@brturbo.com.br>, " \
40 "Sascha Sommer <saschasommer@freenet.de>"
a6c2ba28 41
f7abcd38
MCC		 42#define DRIVER_NAME "em28xx"
43#define DRIVER_DESC "Empia em28xx based USB video device driver"
3acf2809 44#define EM28XX_VERSION_CODE KERNEL_VERSION(0, 0, 1)
a6c2ba28 45
3acf2809 46#define em28xx_videodbg(fmt, arg...) do {\
4ac97914
MCC		 47 if (video_debug) \
48 printk(KERN_INFO "%s %s :"fmt, \
f85c657f 49 dev->name, __FUNCTION__ , ##arg); } while (0)
a6c2ba28 50
51MODULE_AUTHOR(DRIVER_AUTHOR);
52MODULE_DESCRIPTION(DRIVER_DESC);
53MODULE_LICENSE("GPL");
54
3acf2809 55static LIST_HEAD(em28xx_devlist);
9c75541f 56
9d4d9c05 57static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
596d92d5
MCC		 58module_param_array(card, int, NULL, 0444);
59MODULE_PARM_DESC(card,"card type");
60
a6c2ba28 61static int tuner = -1;
62module_param(tuner, int, 0444);
63MODULE_PARM_DESC(tuner, "tuner type");
64
65static unsigned int video_debug = 0;
66module_param(video_debug,int,0644);
67MODULE_PARM_DESC(video_debug,"enable debug messages [video]");
68
69/* supported tv norms */
3acf2809 70static struct em28xx_tvnorm tvnorms[] = {
a6c2ba28 71 {
72 .name = "PAL",
73 .id = V4L2_STD_PAL,
74 .mode = VIDEO_MODE_PAL,
75 }, {
76 .name = "NTSC",
77 .id = V4L2_STD_NTSC,
78 .mode = VIDEO_MODE_NTSC,
79 }, {
80 .name = "SECAM",
81 .id = V4L2_STD_SECAM,
82 .mode = VIDEO_MODE_SECAM,
83 }, {
84 .name = "PAL-M",
85 .id = V4L2_STD_PAL_M,
86 .mode = VIDEO_MODE_PAL,
87 }
88};
89
a38a7d4f
MR		 90static const unsigned char saa7114_i2c_init[] = {
91 0x00,0x00,0x01,0x08,0x02,0xc4,0x03,0x30,0x04,0x90,0x05,0x90,0x06,0xeb,0x07,0xe0,
92 0x08,0x88,0x09,0x40,0x0a,0x80,0x0b,0x44,0x0c,0x40,0x0d,0x00,0x0e,0x81,0x0f,0x2a,
93 0x10,0x06,0x11,0x00,0x12,0xc8,0x13,0x80,0x14,0x00,0x15,0x11,0x16,0x01,0x17,0x42,
94 0x18,0x40,0x19,0x80,0x40,0x00,0x41,0xff,0x42,0xff,0x43,0xff,0x44,0xff,0x45,0xff,
95 0x46,0xff,0x47,0xff,0x48,0xff,0x49,0xff,0x4a,0xff,0x4b,0xff,0x4c,0xff,0x4d,0xff,
96 0x4e,0xff,0x4f,0xff,0x50,0xff,0x51,0xff,0x52,0xff,0x53,0xff,0x54,0x5f,0x55,0xff,
97 0x56,0xff,0x57,0xff,0x58,0x00,0x59,0x47,0x5a,0x03,0x5b,0x03,0x5d,0x3e,0x5e,0x00,
98 0x80,0x1c,0x83,0x01,0x84,0xa5,0x85,0x10,0x86,0x45,0x87,0x41,0x88,0xf0,0x88,0x00,
99 0x88,0xf0,0x90,0x00,0x91,0x08,0x92,0x00,0x93,0x80,0x94,0x08,0x95,0x00,0x96,0xc0,
100 0x97,0x02,0x98,0x13,0x99,0x00,0x9a,0x38,0x9b,0x01,0x9c,0x80,0x9d,0x02,0x9e,0x06,
101 0x9f,0x01,0xa0,0x01,0xa1,0x00,0xa2,0x00,0xa4,0x80,0xa5,0x36,0xa6,0x36,0xa8,0x67,
102 0xa9,0x04,0xaa,0x00,0xac,0x33,0xad,0x02,0xae,0x00,0xb0,0xcd,0xb1,0x04,0xb2,0xcd,
103 0xb3,0x04,0xb4,0x01,0xb8,0x00,0xb9,0x00,0xba,0x00,0xbb,0x00,0xbc,0x00,0xbd,0x00,
104 0xbe,0x00,0xbf,0x00
105};
106
a6c2ba28 107#define TVNORMS ARRAY_SIZE(tvnorms)
108
109/* supported controls */
c0477ad9 110/* Common to all boards */
3acf2809 111static struct v4l2_queryctrl em28xx_qctrl[] = {
c0477ad9
MCC		 112 {
113 .id = V4L2_CID_AUDIO_VOLUME,
114 .type = V4L2_CTRL_TYPE_INTEGER,
115 .name = "Volume",
116 .minimum = 0x0,
117 .maximum = 0x1f,
118 .step = 0x1,
119 .default_value = 0x1f,
120 .flags = 0,
121 },{
122 .id = V4L2_CID_AUDIO_MUTE,
123 .type = V4L2_CTRL_TYPE_BOOLEAN,
124 .name = "Mute",
125 .minimum = 0,
126 .maximum = 1,
127 .step = 1,
128 .default_value = 1,
129 .flags = 0,
130 }
131};
132
133/* FIXME: These are specific to saa711x - should be moved to its code */
134static struct v4l2_queryctrl saa711x_qctrl[] = {
a6c2ba28 135 {
136 .id = V4L2_CID_BRIGHTNESS,
137 .type = V4L2_CTRL_TYPE_INTEGER,
138 .name = "Brightness",
139 .minimum = -128,
140 .maximum = 127,
141 .step = 1,
142 .default_value = 0,
143 .flags = 0,
144 },{
145 .id = V4L2_CID_CONTRAST,
146 .type = V4L2_CTRL_TYPE_INTEGER,
147 .name = "Contrast",
148 .minimum = 0x0,
149 .maximum = 0x1f,
150 .step = 0x1,
151 .default_value = 0x10,
152 .flags = 0,
153 },{
154 .id = V4L2_CID_SATURATION,
155 .type = V4L2_CTRL_TYPE_INTEGER,
156 .name = "Saturation",
157 .minimum = 0x0,
158 .maximum = 0x1f,
159 .step = 0x1,
160 .default_value = 0x10,
161 .flags = 0,
a6c2ba28 162 },{
163 .id = V4L2_CID_RED_BALANCE,
164 .type = V4L2_CTRL_TYPE_INTEGER,
165 .name = "Red chroma balance",
166 .minimum = -128,
167 .maximum = 127,
168 .step = 1,
169 .default_value = 0,
170 .flags = 0,
171 },{
172 .id = V4L2_CID_BLUE_BALANCE,
173 .type = V4L2_CTRL_TYPE_INTEGER,
174 .name = "Blue chroma balance",
175 .minimum = -128,
176 .maximum = 127,
177 .step = 1,
178 .default_value = 0,
179 .flags = 0,
180 },{
181 .id = V4L2_CID_GAMMA,
182 .type = V4L2_CTRL_TYPE_INTEGER,
183 .name = "Gamma",
184 .minimum = 0x0,
185 .maximum = 0x3f,
186 .step = 0x1,
187 .default_value = 0x20,
188 .flags = 0,
c0477ad9 189 }
a6c2ba28 190};
191
3acf2809 192static struct usb_driver em28xx_usb_driver;
a6c2ba28 193
3acf2809
MCC		 194static DECLARE_MUTEX(em28xx_sysfs_lock);
195static DECLARE_RWSEM(em28xx_disconnect);
a6c2ba28 196
197/********************* v4l2 interface ******************************************/
198
a6c2ba28 199/*
3acf2809 200 * em28xx_config()
a6c2ba28 201 * inits registers with sane defaults
202 */
3acf2809 203static int em28xx_config(struct em28xx *dev)
a6c2ba28 204{
205
206 /* Sets I2C speed to 100 KHz */
3acf2809 207 em28xx_write_regs_req(dev, 0x00, 0x06, "\x40", 1);
a6c2ba28 208
209 /* enable vbi capturing */
3acf2809 210 em28xx_audio_usb_mute(dev, 1);
a6c2ba28 211 dev->mute = 1; /* maybe not the right place... */
212 dev->volume = 0x1f;
3acf2809
MCC		 213 em28xx_audio_analog_set(dev);
214 em28xx_audio_analog_setup(dev);
215 em28xx_outfmt_set_yuv422(dev);
216 em28xx_colorlevels_set_default(dev);
217 em28xx_compression_disable(dev);
a6c2ba28 218
219 return 0;
220}
221
222/*
3acf2809 223 * em28xx_config_i2c()
a6c2ba28 224 * configure i2c attached devices
225 */
943a4902 226static void em28xx_config_i2c(struct em28xx *dev)
a6c2ba28 227{
228 struct v4l2_frequency f;
3acf2809 229 struct video_decoder_init em28xx_vdi = {.data = NULL };
a6c2ba28 230
231
232 /* configure decoder */
a38a7d4f 233 if(dev->model == EM2820_BOARD_MSI_VOX_USB_2){
3acf2809
MCC		 234 em28xx_vdi.data=saa7114_i2c_init;
235 em28xx_vdi.len=sizeof(saa7114_i2c_init);
a38a7d4f
MR		 236 }
237
238
3acf2809
MCC		 239 em28xx_i2c_call_clients(dev, DECODER_INIT, &em28xx_vdi);
240 em28xx_i2c_call_clients(dev, DECODER_SET_INPUT, &dev->ctl_input);
241/* em28xx_i2c_call_clients(dev,DECODER_SET_PICTURE, &dev->vpic); */
242/* em28xx_i2c_call_clients(dev,DECODER_SET_NORM,&dev->tvnorm->id); */
243/* em28xx_i2c_call_clients(dev,DECODER_ENABLE_OUTPUT,&output); */
244/* em28xx_i2c_call_clients(dev,DECODER_DUMP, NULL); */
a6c2ba28 245
246 /* configure tuner */
247 f.tuner = 0;
248 f.type = V4L2_TUNER_ANALOG_TV;
249 f.frequency = 9076; /* FIXME:remove magic number */
250 dev->ctl_freq = f.frequency;
3acf2809 251 em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, &f);
a6c2ba28 252
253 /* configure tda9887 */
254
a6c2ba28 255
3acf2809 256/* em28xx_i2c_call_clients(dev,VIDIOC_S_STD,&dev->tvnorm->id); */
a6c2ba28 257}
258
259/*
3acf2809 260 * em28xx_empty_framequeues()
a6c2ba28 261 * prepare queues for incoming and outgoing frames
262 */
3acf2809 263static void em28xx_empty_framequeues(struct em28xx *dev)
a6c2ba28 264{
265 u32 i;
266
267 INIT_LIST_HEAD(&dev->inqueue);
268 INIT_LIST_HEAD(&dev->outqueue);
269
3acf2809 270 for (i = 0; i < EM28XX_NUM_FRAMES; i++) {
a6c2ba28 271 dev->frame[i].state = F_UNUSED;
272 dev->frame[i].buf.bytesused = 0;
273 }
274}
275
eac94356
MCC		 276static void video_mux(struct em28xx *dev, int index)
277{
278 int input, ainput;
279
280 input = INPUT(index)->vmux;
281 dev->ctl_input = index;
282 dev->ctl_ainput = INPUT(index)->amux;
283
284 em28xx_i2c_call_clients(dev, DECODER_SET_INPUT, &input);
285
286
287 em28xx_videodbg("Setting input index=%d, vmux=%d, amux=%d\n",index,input,dev->ctl_ainput);
288
289 if (dev->has_msp34xx) {
9bb13a6d
MCC		 290 if (dev->i2s_speed)
291 em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ, &dev->i2s_speed);
eac94356
MCC		 292 em28xx_i2c_call_clients(dev, VIDIOC_S_AUDIO, &dev->ctl_ainput);
293 ainput = EM28XX_AUDIO_SRC_TUNER;
294 em28xx_audio_source(dev, ainput);
295 } else {
296 switch (dev->ctl_ainput) {
297 case 0:
298 ainput = EM28XX_AUDIO_SRC_TUNER;
299 break;
300 default:
301 ainput = EM28XX_AUDIO_SRC_LINE;
302 }
303 em28xx_audio_source(dev, ainput);
304 }
305}
306
a6c2ba28 307/*
3acf2809 308 * em28xx_v4l2_open()
a6c2ba28 309 * inits the device and starts isoc transfer
310 */
3acf2809 311static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
a6c2ba28 312{
a6c2ba28 313 int minor = iminor(inode);
a6c2ba28 314 int errCode = 0;
3acf2809 315 struct em28xx *h,*dev = NULL;
9c75541f
MR		 316 struct list_head *list;
317
3acf2809
MCC		 318 list_for_each(list,&em28xx_devlist) {
319 h = list_entry(list, struct em28xx, devlist);
9c75541f
MR		 320 if (h->vdev->minor == minor) {
321 dev = h;
322 }
323 }
324
325 filp->private_data=dev;
326
a6c2ba28 327
eac94356 328 em28xx_videodbg("users=%d\n", dev->users);
a6c2ba28 329
3acf2809 330 if (!down_read_trylock(&em28xx_disconnect))
a6c2ba28 331 return -ERESTARTSYS;
332
333 if (dev->users) {
3acf2809
MCC		 334 em28xx_warn("this driver can be opened only once\n");
335 up_read(&em28xx_disconnect);
a6c2ba28 336 return -EBUSY;
337 }
338
339/* if(dev->vbi_dev->minor == minor){
340 dev->type=V4L2_BUF_TYPE_VBI_CAPTURE;
341 }*/
342 if (dev->vdev->minor == minor) {
343 dev->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
344 }
345
346 init_MUTEX(&dev->fileop_lock); /* to 1 == available */
347 spin_lock_init(&dev->queue_lock);
348 init_waitqueue_head(&dev->wait_frame);
349 init_waitqueue_head(&dev->wait_stream);
350
351 down(&dev->lock);
352
3acf2809 353 em28xx_set_alternate(dev);
a6c2ba28 354
355 dev->width = norm_maxw(dev);
356 dev->height = norm_maxh(dev);
357 dev->frame_size = dev->width * dev->height * 2;
358 dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
359 dev->bytesperline = dev->width * 2;
360 dev->hscale = 0;
361 dev->vscale = 0;
362
3acf2809
MCC		 363 em28xx_capture_start(dev, 1);
364 em28xx_resolution_set(dev);
a6c2ba28 365
366 /* start the transfer */
3acf2809 367 errCode = em28xx_init_isoc(dev);
a6c2ba28 368 if (errCode)
369 goto err;
370
371 dev->users++;
372 filp->private_data = dev;
373 dev->io = IO_NONE;
374 dev->stream = STREAM_OFF;
375 dev->num_frames = 0;
376
377 /* prepare queues */
3acf2809 378 em28xx_empty_framequeues(dev);
a6c2ba28 379
380 dev->state |= DEV_INITIALIZED;
381
eac94356
MCC		 382 video_mux(dev, 0);
383
a6c2ba28 384 err:
385 up(&dev->lock);
3acf2809 386 up_read(&em28xx_disconnect);
a6c2ba28 387 return errCode;
388}
389
390/*
3acf2809 391 * em28xx_realease_resources()
a6c2ba28 392 * unregisters the v4l2,i2c and usb devices
393 * called when the device gets disconected or at module unload
394*/
3acf2809 395static void em28xx_release_resources(struct em28xx *dev)
a6c2ba28 396{
3acf2809 397 down(&em28xx_sysfs_lock);
a6c2ba28 398
3acf2809 399 em28xx_info("V4L2 device /dev/video%d deregistered\n",
a6c2ba28 400 dev->vdev->minor);
9c75541f 401 list_del(&dev->devlist);
a6c2ba28 402 video_unregister_device(dev->vdev);
403/* video_unregister_device(dev->vbi_dev); */
3acf2809 404 em28xx_i2c_unregister(dev);
a6c2ba28 405 usb_put_dev(dev->udev);
3acf2809 406 up(&em28xx_sysfs_lock);
a6c2ba28 407}
408
409/*
3acf2809 410 * em28xx_v4l2_close()
a6c2ba28 411 * stops streaming and deallocates all resources allocated by the v4l2 calls and ioctls
412 */
3acf2809 413static int em28xx_v4l2_close(struct inode *inode, struct file *filp)
a6c2ba28 414{
a6c2ba28 415 int errCode;
3acf2809 416 struct em28xx *dev=filp->private_data;
a6c2ba28 417
eac94356 418 em28xx_videodbg("users=%d\n", dev->users);
a6c2ba28 419
420 down(&dev->lock);
421
3acf2809 422 em28xx_uninit_isoc(dev);
a6c2ba28 423
3acf2809 424 em28xx_release_buffers(dev);
a6c2ba28 425
426 /* the device is already disconnect, free the remaining resources */
427 if (dev->state & DEV_DISCONNECTED) {
3acf2809 428 em28xx_release_resources(dev);
a6c2ba28 429 up(&dev->lock);
430 kfree(dev);
431 return 0;
432 }
433
434 /* set alternate 0 */
435 dev->alt = 0;
eac94356 436 em28xx_videodbg("setting alternate 0\n");
a6c2ba28 437 errCode = usb_set_interface(dev->udev, 0, 0);
438 if (errCode < 0) {
3acf2809 439 em28xx_errdev ("cannot change alternate number to 0 (error=%i)\n",
a6c2ba28 440 errCode);
441 }
442
443 dev->users--;
444 wake_up_interruptible_nr(&dev->open, 1);
445 up(&dev->lock);
446 return 0;
447}
448
449/*
3acf2809 450 * em28xx_v4l2_read()
a6c2ba28 451 * will allocate buffers when called for the first time
452 */
453static ssize_t
3acf2809 454em28xx_v4l2_read(struct file *filp, char __user * buf, size_t count,
a6c2ba28 455 loff_t * f_pos)
456{
3acf2809 457 struct em28xx_frame_t *f, *i;
a6c2ba28 458 unsigned long lock_flags;
459 int ret = 0;
3acf2809 460 struct em28xx *dev = filp->private_data;
a6c2ba28 461
462 if (down_interruptible(&dev->fileop_lock))
463 return -ERESTARTSYS;
464
465 if (dev->state & DEV_DISCONNECTED) {
eac94356 466 em28xx_videodbg("device not present\n");
a6c2ba28 467 up(&dev->fileop_lock);
468 return -ENODEV;
469 }
470
471 if (dev->state & DEV_MISCONFIGURED) {
eac94356 472 em28xx_videodbg("device misconfigured; close and open it again\n");
a6c2ba28 473 up(&dev->fileop_lock);
474 return -EIO;
475 }
476
477 if (dev->io == IO_MMAP) {
3acf2809 478 em28xx_videodbg ("IO method is set to mmap; close and open"
eac94356 479 " the device again to choose the read method\n");
a6c2ba28 480 up(&dev->fileop_lock);
481 return -EINVAL;
482 }
483
484 if (dev->io == IO_NONE) {
3acf2809
MCC		 485 if (!em28xx_request_buffers(dev, EM28XX_NUM_READ_FRAMES)) {
486 em28xx_errdev("read failed, not enough memory\n");
a6c2ba28 487 up(&dev->fileop_lock);
488 return -ENOMEM;
489 }
490 dev->io = IO_READ;
491 dev->stream = STREAM_ON;
3acf2809 492 em28xx_queue_unusedframes(dev);
a6c2ba28 493 }
494
495 if (!count) {
496 up(&dev->fileop_lock);
497 return 0;
498 }
499
500 if (list_empty(&dev->outqueue)) {
501 if (filp->f_flags & O_NONBLOCK) {
502 up(&dev->fileop_lock);
503 return -EAGAIN;
504 }
505 ret = wait_event_interruptible
506 (dev->wait_frame,
507 (!list_empty(&dev->outqueue)) ||
508 (dev->state & DEV_DISCONNECTED));
509 if (ret) {
510 up(&dev->fileop_lock);
511 return ret;
512 }
513 if (dev->state & DEV_DISCONNECTED) {
514 up(&dev->fileop_lock);
515 return -ENODEV;
516 }
517 }
518
3acf2809 519 f = list_entry(dev->outqueue.prev, struct em28xx_frame_t, frame);
a6c2ba28 520
521 spin_lock_irqsave(&dev->queue_lock, lock_flags);
522 list_for_each_entry(i, &dev->outqueue, frame)
523 i->state = F_UNUSED;
524 INIT_LIST_HEAD(&dev->outqueue);
525 spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
526
3acf2809 527 em28xx_queue_unusedframes(dev);
a6c2ba28 528
529 if (count > f->buf.length)
530 count = f->buf.length;
531
532 if (copy_to_user(buf, f->bufmem, count)) {
533 up(&dev->fileop_lock);
534 return -EFAULT;
535 }
536 *f_pos += count;
537
538 up(&dev->fileop_lock);
539
540 return count;
541}
542
543/*
3acf2809 544 * em28xx_v4l2_poll()
a6c2ba28 545 * will allocate buffers when called for the first time
546 */
3acf2809 547static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait)
a6c2ba28 548{
a6c2ba28 549 unsigned int mask = 0;
3acf2809 550 struct em28xx *dev = filp->private_data;
a6c2ba28 551
552 if (down_interruptible(&dev->fileop_lock))
553 return POLLERR;
554
555 if (dev->state & DEV_DISCONNECTED) {
eac94356 556 em28xx_videodbg("device not present\n");
a6c2ba28 557 } else if (dev->state & DEV_MISCONFIGURED) {
eac94356 558 em28xx_videodbg("device is misconfigured; close and open it again\n");
a6c2ba28 559 } else {
560 if (dev->io == IO_NONE) {
3acf2809
MCC		 561 if (!em28xx_request_buffers
562 (dev, EM28XX_NUM_READ_FRAMES)) {
563 em28xx_warn
a6c2ba28 564 ("poll() failed, not enough memory\n");
565 } else {
566 dev->io = IO_READ;
567 dev->stream = STREAM_ON;
568 }
569 }
570
571 if (dev->io == IO_READ) {
3acf2809 572 em28xx_queue_unusedframes(dev);
a6c2ba28 573 poll_wait(filp, &dev->wait_frame, wait);
574
575 if (!list_empty(&dev->outqueue))
576 mask |= POLLIN | POLLRDNORM;
577
578 up(&dev->fileop_lock);
579
580 return mask;
581 }
582 }
583
584 up(&dev->fileop_lock);
585 return POLLERR;
586}
587
588/*
3acf2809 589 * em28xx_vm_open()
a6c2ba28 590 */
3acf2809 591static void em28xx_vm_open(struct vm_area_struct *vma)
a6c2ba28 592{
3acf2809 593 struct em28xx_frame_t *f = vma->vm_private_data;
a6c2ba28 594 f->vma_use_count++;
595}
596
597/*
3acf2809 598 * em28xx_vm_close()
a6c2ba28 599 */
3acf2809 600static void em28xx_vm_close(struct vm_area_struct *vma)
a6c2ba28 601{
602 /* NOTE: buffers are not freed here */
3acf2809 603 struct em28xx_frame_t *f = vma->vm_private_data;
a6c2ba28 604 f->vma_use_count--;
605}
606
3acf2809
MCC		 607static struct vm_operations_struct em28xx_vm_ops = {
608 .open = em28xx_vm_open,
609 .close = em28xx_vm_close,
a6c2ba28 610};
611
612/*
3acf2809 613 * em28xx_v4l2_mmap()
a6c2ba28 614 */
3acf2809 615static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
a6c2ba28 616{
a6c2ba28 617 unsigned long size = vma->vm_end - vma->vm_start,
3639c861
SS		 618 start = vma->vm_start;
619 void *pos;
a6c2ba28 620 u32 i;
9c75541f 621
3acf2809 622 struct em28xx *dev = filp->private_data;
9c75541f 623
a6c2ba28 624 if (down_interruptible(&dev->fileop_lock))
625 return -ERESTARTSYS;
626
627 if (dev->state & DEV_DISCONNECTED) {
eac94356 628 em28xx_videodbg("mmap: device not present\n");
a6c2ba28 629 up(&dev->fileop_lock);
630 return -ENODEV;
631 }
632
633 if (dev->state & DEV_MISCONFIGURED) {
3acf2809 634 em28xx_videodbg ("mmap: Device is misconfigured; close and "
eac94356 635 "open it again\n");
a6c2ba28 636 up(&dev->fileop_lock);
637 return -EIO;
638 }
639
640 if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) ||
641 size != PAGE_ALIGN(dev->frame[0].buf.length)) {
642 up(&dev->fileop_lock);
643 return -EINVAL;
644 }
645
646 for (i = 0; i < dev->num_frames; i++) {
647 if ((dev->frame[i].buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff)
648 break;
649 }
650 if (i == dev->num_frames) {
eac94356 651 em28xx_videodbg("mmap: user supplied mapping address is out of range\n");
a6c2ba28 652 up(&dev->fileop_lock);
653 return -EINVAL;
654 }
655
656 /* VM_IO is eventually going to replace PageReserved altogether */
657 vma->vm_flags |= VM_IO;
658 vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
659
3639c861 660 pos = dev->frame[i].bufmem;
a6c2ba28 661 while (size > 0) { /* size is page-aligned */
3639c861
SS		 662 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
663 em28xx_videodbg("mmap: vm_insert_page failed\n");
a6c2ba28 664 up(&dev->fileop_lock);
665 return -EAGAIN;
666 }
667 start += PAGE_SIZE;
668 pos += PAGE_SIZE;
669 size -= PAGE_SIZE;
670 }
671
3acf2809 672 vma->vm_ops = &em28xx_vm_ops;
a6c2ba28 673 vma->vm_private_data = &dev->frame[i];
674
3acf2809 675 em28xx_vm_open(vma);
a6c2ba28 676 up(&dev->fileop_lock);
677 return 0;
678}
679
680/*
3acf2809 681 * em28xx_get_ctrl()
a6c2ba28 682 * return the current saturation, brightness or contrast, mute state
683 */
3acf2809 684static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
a6c2ba28 685{
a6c2ba28 686 switch (ctrl->id) {
687 case V4L2_CID_AUDIO_MUTE:
688 ctrl->value = dev->mute;
689 return 0;
690 case V4L2_CID_AUDIO_VOLUME:
691 ctrl->value = dev->volume;
692 return 0;
c0477ad9
MCC		 693 default:
694 return -EINVAL;
695 }
696}
697
698/*FIXME: should be moved to saa711x */
699static int saa711x_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
700{
701 s32 tmp;
702 switch (ctrl->id) {
a6c2ba28 703 case V4L2_CID_BRIGHTNESS:
3acf2809 704 if ((tmp = em28xx_brightness_get(dev)) < 0)
a6c2ba28 705 return -EIO;
706 ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
707 return 0;
708 case V4L2_CID_CONTRAST:
3acf2809 709 if ((ctrl->value = em28xx_contrast_get(dev)) < 0)
a6c2ba28 710 return -EIO;
711 return 0;
712 case V4L2_CID_SATURATION:
3acf2809 713 if ((ctrl->value = em28xx_saturation_get(dev)) < 0)
a6c2ba28 714 return -EIO;
715 return 0;
716 case V4L2_CID_RED_BALANCE:
3acf2809 717 if ((tmp = em28xx_v_balance_get(dev)) < 0)
a6c2ba28 718 return -EIO;
719 ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
720 return 0;
721 case V4L2_CID_BLUE_BALANCE:
3acf2809 722 if ((tmp = em28xx_u_balance_get(dev)) < 0)
a6c2ba28 723 return -EIO;
724 ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
725 return 0;
726 case V4L2_CID_GAMMA:
3acf2809 727 if ((ctrl->value = em28xx_gamma_get(dev)) < 0)
a6c2ba28 728 return -EIO;
729 return 0;
730 default:
731 return -EINVAL;
732 }
733}
734
735/*
3acf2809 736 * em28xx_set_ctrl()
a6c2ba28 737 * mute or set new saturation, brightness or contrast
738 */
3acf2809 739static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
a6c2ba28 740{
741 switch (ctrl->id) {
742 case V4L2_CID_AUDIO_MUTE:
743 if (ctrl->value != dev->mute) {
744 dev->mute = ctrl->value;
3acf2809
MCC		 745 em28xx_audio_usb_mute(dev, ctrl->value);
746 return em28xx_audio_analog_set(dev);
a6c2ba28 747 }
748 return 0;
749 case V4L2_CID_AUDIO_VOLUME:
750 dev->volume = ctrl->value;
3acf2809 751 return em28xx_audio_analog_set(dev);
c0477ad9
MCC		 752 default:
753 return -EINVAL;
754 }
755}
756
757/*FIXME: should be moved to saa711x */
758static int saa711x_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
759{
760 switch (ctrl->id) {
a6c2ba28 761 case V4L2_CID_BRIGHTNESS:
3acf2809 762 return em28xx_brightness_set(dev, ctrl->value);
a6c2ba28 763 case V4L2_CID_CONTRAST:
3acf2809 764 return em28xx_contrast_set(dev, ctrl->value);
a6c2ba28 765 case V4L2_CID_SATURATION:
3acf2809 766 return em28xx_saturation_set(dev, ctrl->value);
a6c2ba28 767 case V4L2_CID_RED_BALANCE:
3acf2809 768 return em28xx_v_balance_set(dev, ctrl->value);
a6c2ba28 769 case V4L2_CID_BLUE_BALANCE:
3acf2809 770 return em28xx_u_balance_set(dev, ctrl->value);
a6c2ba28 771 case V4L2_CID_GAMMA:
3acf2809 772 return em28xx_gamma_set(dev, ctrl->value);
a6c2ba28 773 default:
774 return -EINVAL;
775 }
776}
777
778/*
3acf2809 779 * em28xx_stream_interrupt()
a6c2ba28 780 * stops streaming
781 */
3acf2809 782static int em28xx_stream_interrupt(struct em28xx *dev)
a6c2ba28 783{
784 int ret = 0;
785
786 /* stop reading from the device */
787
788 dev->stream = STREAM_INTERRUPT;
789 ret = wait_event_timeout(dev->wait_stream,
790 (dev->stream == STREAM_OFF) ||
791 (dev->state & DEV_DISCONNECTED),
3acf2809 792 EM28XX_URB_TIMEOUT);
a6c2ba28 793 if (dev->state & DEV_DISCONNECTED)
794 return -ENODEV;
795 else if (ret) {
796 dev->state |= DEV_MISCONFIGURED;
3acf2809 797 em28xx_videodbg("device is misconfigured; close and "
eac94356 798 "open /dev/video%d again\n", dev->vdev->minor);
a6c2ba28 799 return ret;
800 }
801
802 return 0;
803}
804
3acf2809 805static int em28xx_set_norm(struct em28xx *dev, int width, int height)
a6c2ba28 806{
807 unsigned int hscale, vscale;
808 unsigned int maxh, maxw;
809
810 maxw = norm_maxw(dev);
811 maxh = norm_maxh(dev);
812
813 /* width must even because of the YUYV format */
814 /* height must be even because of interlacing */
815 height &= 0xfffe;
816 width &= 0xfffe;
817
818 if (height < 32)
819 height = 32;
820 if (height > maxh)
821 height = maxh;
822 if (width < 48)
823 width = 48;
824 if (width > maxw)
825 width = maxw;
826
827 if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000)
828 hscale = 0x3fff;
829 width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
830
831 if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000)
832 vscale = 0x3fff;
833 height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
834
835 /* set new image size */
836 dev->width = width;
837 dev->height = height;
838 dev->frame_size = dev->width * dev->height * 2;
839 dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
840 dev->bytesperline = dev->width * 2;
841 dev->hscale = hscale;
842 dev->vscale = vscale;
843
3acf2809 844 em28xx_resolution_set(dev);
a6c2ba28 845
846 return 0;
847}
848
a6c2ba28 849/*
3acf2809 850 * em28xx_v4l2_do_ioctl()
a6c2ba28 851 * This function is _not_ called directly, but from
3acf2809 852 * em28xx_v4l2_ioctl. Userspace
a6c2ba28 853 * copying is done already, arg is a kernel pointer.
854 */
3acf2809
MCC		 855static int em28xx_do_ioctl(struct inode *inode, struct file *filp,
856 struct em28xx *dev, unsigned int cmd, void *arg,
a6c2ba28 857 v4l2_kioctl driver_ioctl)
858{
859 int ret;
860
861 switch (cmd) {
862 /* ---------- tv norms ---------- */
863 case VIDIOC_ENUMSTD:
864 {
865 struct v4l2_standard *e = arg;
866 unsigned int i;
867
868 i = e->index;
869 if (i >= TVNORMS)
870 return -EINVAL;
871 ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
872 tvnorms[e->index].name);
873 e->index = i;
874 if (ret < 0)
875 return ret;
876 return 0;
877 }
878 case VIDIOC_G_STD:
879 {
880 v4l2_std_id *id = arg;
881
882 *id = dev->tvnorm->id;
883 return 0;
884 }
885 case VIDIOC_S_STD:
886 {
887 v4l2_std_id *id = arg;
888 unsigned int i;
889
890 for (i = 0; i < TVNORMS; i++)
891 if (*id == tvnorms[i].id)
892 break;
893 if (i == TVNORMS)
894 for (i = 0; i < TVNORMS; i++)
895 if (*id & tvnorms[i].id)
896 break;
897 if (i == TVNORMS)
898 return -EINVAL;
899
900 down(&dev->lock);
901 dev->tvnorm = &tvnorms[i];
902
3acf2809 903 em28xx_set_norm(dev, dev->width, dev->height);
a6c2ba28 904
905/*
906 dev->width=norm_maxw(dev);
907 dev->height=norm_maxh(dev);
908 dev->frame_size=dev->width*dev->height*2;
909 dev->field_size=dev->frame_size>>1;
910 dev->bytesperline=dev->width*2;
911 dev->hscale=0;
912 dev->vscale=0;
913
3acf2809 914 em28xx_resolution_set(dev);
a6c2ba28 915*/
916/*
3acf2809
MCC		 917 em28xx_uninit_isoc(dev);
918 em28xx_set_alternate(dev);
919 em28xx_capture_start(dev, 1);
920 em28xx_resolution_set(dev);
921 em28xx_init_isoc(dev);
a6c2ba28 922*/
3acf2809 923 em28xx_i2c_call_clients(dev, DECODER_SET_NORM,
a6c2ba28 924 &tvnorms[i].mode);
3acf2809 925 em28xx_i2c_call_clients(dev, VIDIOC_S_STD,
a6c2ba28 926 &dev->tvnorm->id);
927
928 up(&dev->lock);
929
930 return 0;
931 }
932
933 /* ------ input switching ---------- */
934 case VIDIOC_ENUMINPUT:
935 {
936 struct v4l2_input *i = arg;
937 unsigned int n;
938 static const char *iname[] = {
3acf2809
MCC		 939 [EM28XX_VMUX_COMPOSITE1] = "Composite1",
940 [EM28XX_VMUX_COMPOSITE2] = "Composite2",
941 [EM28XX_VMUX_COMPOSITE3] = "Composite3",
942 [EM28XX_VMUX_COMPOSITE4] = "Composite4",
943 [EM28XX_VMUX_SVIDEO] = "S-Video",
944 [EM28XX_VMUX_TELEVISION] = "Television",
945 [EM28XX_VMUX_CABLE] = "Cable TV",
946 [EM28XX_VMUX_DVB] = "DVB",
947 [EM28XX_VMUX_DEBUG] = "for debug only",
a6c2ba28 948 };
949
950 n = i->index;
3acf2809 951 if (n >= MAX_EM28XX_INPUT)
a6c2ba28 952 return -EINVAL;
953 if (0 == INPUT(n)->type)
954 return -EINVAL;
955 memset(i, 0, sizeof(*i));
956 i->index = n;
957 i->type = V4L2_INPUT_TYPE_CAMERA;
958 strcpy(i->name, iname[INPUT(n)->type]);
3acf2809
MCC		 959 if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
960 (EM28XX_VMUX_CABLE == INPUT(n)->type))
a6c2ba28 961 i->type = V4L2_INPUT_TYPE_TUNER;
962 for (n = 0; n < ARRAY_SIZE(tvnorms); n++)
963 i->std |= tvnorms[n].id;
964 return 0;
965 }
966
967 case VIDIOC_G_INPUT:
968 {
969 int *i = arg;
970 *i = dev->ctl_input;
971
972 return 0;
973 }
974
975 case VIDIOC_S_INPUT:
976 {
977 int *index = arg;
978
3acf2809 979 if (*index >= MAX_EM28XX_INPUT)
a6c2ba28 980 return -EINVAL;
981 if (0 == INPUT(*index)->type)
982 return -EINVAL;
983
984 down(&dev->lock);
985 video_mux(dev, *index);
986 up(&dev->lock);
987
988 return 0;
989 }
990
991 case VIDIOC_G_AUDIO:
992 {
993 struct v4l2_audio *a = arg;
994 unsigned int index = a->index;
995
996 if (a->index > 1)
997 return -EINVAL;
998 memset(a, 0, sizeof(*a));
999 index = dev->ctl_ainput;
1000
1001 if (index == 0) {
1002 strcpy(a->name, "Television");
1003 } else {
1004 strcpy(a->name, "Line In");
1005 }
1006 a->capability = V4L2_AUDCAP_STEREO;
1007 a->index = index;
1008 return 0;
1009 }
1010
1011 case VIDIOC_S_AUDIO:
1012 {
1013 struct v4l2_audio *a = arg;
1014 if (a->index != dev->ctl_ainput)
1015 return -EINVAL;
1016
1017 return 0;
1018 }
1019
1020 /* --- controls ---------------------------------------------- */
1021 case VIDIOC_QUERYCTRL:
1022 {
1023 struct v4l2_queryctrl *qc = arg;
c0477ad9
MCC		 1024 int i, id=qc->id;
1025
1026 memset(qc,0,sizeof(*qc));
1027 qc->id=id;
1028
1029 if (!dev->has_msp34xx) {
1030 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1031 if (qc->id && qc->id == em28xx_qctrl[i].id) {
1032 memcpy(qc, &(em28xx_qctrl[i]),
1033 sizeof(*qc));
1034 return 0;
1035 }
1036 }
1037 }
1038 if (dev->decoder == EM28XX_TVP5150) {
1039 em28xx_i2c_call_clients(dev,cmd,qc);
1040 if (qc->type)
1041 return 0;
1042 else
1043 return -EINVAL;
1044 }
1045 for (i = 0; i < ARRAY_SIZE(saa711x_qctrl); i++) {
1046 if (qc->id && qc->id == saa711x_qctrl[i].id) {
1047 memcpy(qc, &(saa711x_qctrl[i]),
a6c2ba28 1048 sizeof(*qc));
1049 return 0;
1050 }
c0477ad9 1051 }
a6c2ba28 1052
1053 return -EINVAL;
1054 }
1055
1056 case VIDIOC_G_CTRL:
1057 {
1058 struct v4l2_control *ctrl = arg;
c0477ad9 1059 int retval=-EINVAL;
a6c2ba28 1060
c0477ad9
MCC		 1061 if (!dev->has_msp34xx)
1062 retval=em28xx_get_ctrl(dev, ctrl);
1063 if (retval==-EINVAL) {
1064 if (dev->decoder == EM28XX_TVP5150) {
1065 em28xx_i2c_call_clients(dev,cmd,arg);
1066 return 0;
1067 }
a6c2ba28 1068
c0477ad9
MCC		 1069 return saa711x_get_ctrl(dev, ctrl);
1070 } else return retval;
a6c2ba28 1071 }
1072
a6c2ba28 1073 case VIDIOC_S_CTRL:
1074 {
1075 struct v4l2_control *ctrl = arg;
c0477ad9
MCC		 1076 u8 i;
1077
1078 if (!dev->has_msp34xx){
1079 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1080 if (ctrl->id == em28xx_qctrl[i].id) {
1081 if (ctrl->value <
1082 em28xx_qctrl[i].minimum
1083 || ctrl->value >
1084 em28xx_qctrl[i].maximum)
1085 return -ERANGE;
1086 return em28xx_set_ctrl(dev, ctrl);
1087 }
1088 }
1089 }
a6c2ba28 1090
c0477ad9
MCC		 1091 if (dev->decoder == EM28XX_TVP5150) {
1092 em28xx_i2c_call_clients(dev,cmd,arg);
1093 return 0;
7865c44d 1094 } else if (!dev->has_msp34xx) {
c0477ad9
MCC		 1095 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1096 if (ctrl->id == em28xx_qctrl[i].id) {
1097 if (ctrl->value <
1098 em28xx_qctrl[i].minimum
1099 || ctrl->value >
1100 em28xx_qctrl[i].maximum)
1101 return -ERANGE;
1102 return em28xx_set_ctrl(dev, ctrl);
1103 }
1104 }
1105 for (i = 0; i < ARRAY_SIZE(saa711x_qctrl); i++) {
1106 if (ctrl->id == saa711x_qctrl[i].id) {
1107 if (ctrl->value <
1108 saa711x_qctrl[i].minimum
1109 || ctrl->value >
1110 saa711x_qctrl[i].maximum)
1111 return -ERANGE;
1112 return saa711x_set_ctrl(dev, ctrl);
1113 }
a6c2ba28 1114 }
c0477ad9
MCC		 1115 }
1116
a6c2ba28 1117 return -EINVAL;
1118 }
1119
1120 /* --- tuner ioctls ------------------------------------------ */
1121 case VIDIOC_G_TUNER:
1122 {
1123 struct v4l2_tuner *t = arg;
1124 int status = 0;
1125
1126 if (0 != t->index)
1127 return -EINVAL;
1128
1129 memset(t, 0, sizeof(*t));
1130 strcpy(t->name, "Tuner");
1131 t->type = V4L2_TUNER_ANALOG_TV;
1132 t->capability = V4L2_TUNER_CAP_NORM;
1133 t->rangehigh = 0xffffffffUL; /* FIXME: set correct range */
1134/* t->signal = 0xffff;*/
3acf2809 1135/* em28xx_i2c_call_clients(dev,VIDIOC_G_TUNER,t);*/
a6c2ba28 1136 /* No way to get signal strength? */
1137 down(&dev->lock);
3acf2809 1138 em28xx_i2c_call_clients(dev, DECODER_GET_STATUS,
a6c2ba28 1139 &status);
1140 up(&dev->lock);
1141 t->signal =
1142 (status & DECODER_STATUS_GOOD) != 0 ? 0xffff : 0;
1143
eac94356 1144 em28xx_videodbg("VIDIO_G_TUNER: signal=%x, afc=%x\n", t->signal,
a6c2ba28 1145 t->afc);
1146 return 0;
1147 }
1148 case VIDIOC_S_TUNER:
1149 {
1150 struct v4l2_tuner *t = arg;
1151 int status = 0;
1152
1153 if (0 != t->index)
1154 return -EINVAL;
1155 memset(t, 0, sizeof(*t));
1156 strcpy(t->name, "Tuner");
1157 t->type = V4L2_TUNER_ANALOG_TV;
1158 t->capability = V4L2_TUNER_CAP_NORM;
1159 t->rangehigh = 0xffffffffUL; /* FIXME: set correct range */
1160/* t->signal = 0xffff; */
1161 /* No way to get signal strength? */
1162 down(&dev->lock);
3acf2809 1163 em28xx_i2c_call_clients(dev, DECODER_GET_STATUS,
a6c2ba28 1164 &status);
1165 up(&dev->lock);
1166 t->signal =
1167 (status & DECODER_STATUS_GOOD) != 0 ? 0xffff : 0;
1168
3acf2809 1169 em28xx_videodbg("VIDIO_S_TUNER: signal=%x, afc=%x\n",
a6c2ba28 1170 t->signal, t->afc);
1171 return 0;
1172 }
1173 case VIDIOC_G_FREQUENCY:
1174 {
1175 struct v4l2_frequency *f = arg;
1176
1177 memset(f, 0, sizeof(*f));
1178 f->type = V4L2_TUNER_ANALOG_TV;
1179 f->frequency = dev->ctl_freq;
1180
1181 return 0;
1182 }
1183 case VIDIOC_S_FREQUENCY:
1184 {
1185 struct v4l2_frequency *f = arg;
1186
1187 if (0 != f->tuner)
1188 return -EINVAL;
1189
1190 if (V4L2_TUNER_ANALOG_TV != f->type)
1191 return -EINVAL;
1192
1193 down(&dev->lock);
1194 dev->ctl_freq = f->frequency;
3acf2809 1195 em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f);
a6c2ba28 1196 up(&dev->lock);
1197 return 0;
1198 }
1199
1200 case VIDIOC_CROPCAP:
1201 {
1202 struct v4l2_cropcap *cc = arg;
1203
1204 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
596d92d5 1205 return -EINVAL;
a6c2ba28 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 return 0;
1214 }
1215 case VIDIOC_STREAMON:
1216 {
1217 int *type = arg;
1218
1219 if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
1220 || dev->io != IO_MMAP)
1221 return -EINVAL;
1222
1223 if (list_empty(&dev->inqueue))
1224 return -EINVAL;
1225
1226 dev->stream = STREAM_ON; /* FIXME: Start video capture here? */
1227
eac94356 1228 em28xx_videodbg("VIDIOC_STREAMON: starting stream\n");
a6c2ba28 1229
1230 return 0;
1231 }
1232 case VIDIOC_STREAMOFF:
1233 {
1234 int *type = arg;
1235 int ret;
1236
1237 if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
1238 || dev->io != IO_MMAP)
1239 return -EINVAL;
1240
1241 if (dev->stream == STREAM_ON) {
eac94356 1242 em28xx_videodbg ("VIDIOC_STREAMOFF: interrupting stream\n");
3acf2809 1243 if ((ret = em28xx_stream_interrupt(dev)))
a6c2ba28 1244 return ret;
1245 }
3acf2809 1246 em28xx_empty_framequeues(dev);
a6c2ba28 1247
1248 return 0;
1249 }
1250 default:
1251 return v4l_compat_translate_ioctl(inode, filp, cmd, arg,
1252 driver_ioctl);
1253 }
1254 return 0;
1255}
1256
1257/*
3acf2809 1258 * em28xx_v4l2_do_ioctl()
a6c2ba28 1259 * This function is _not_ called directly, but from
3acf2809 1260 * em28xx_v4l2_ioctl. Userspace
a6c2ba28 1261 * copying is done already, arg is a kernel pointer.
1262 */
3acf2809 1263static int em28xx_video_do_ioctl(struct inode *inode, struct file *filp,
a6c2ba28 1264 unsigned int cmd, void *arg)
1265{
3acf2809 1266 struct em28xx *dev = filp->private_data;
a6c2ba28 1267
1268 if (!dev)
1269 return -ENODEV;
1270
1271 if (video_debug > 1)
5e453dc7 1272 v4l_print_ioctl(dev->name,cmd);
a6c2ba28 1273
1274 switch (cmd) {
1275
1276 /* --- capabilities ------------------------------------------ */
1277 case VIDIOC_QUERYCAP:
1278 {
1279 struct v4l2_capability *cap = arg;
1280
1281 memset(cap, 0, sizeof(*cap));
3acf2809
MCC		 1282 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1283 strlcpy(cap->card, em28xx_boards[dev->model].name,
a6c2ba28 1284 sizeof(cap->card));
1285 strlcpy(cap->bus_info, dev->udev->dev.bus_id,
1286 sizeof(cap->bus_info));
3acf2809 1287 cap->version = EM28XX_VERSION_CODE;
a6c2ba28 1288 cap->capabilities =
1289 V4L2_CAP_VIDEO_CAPTURE |
1290 V4L2_CAP_AUDIO |
1291 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1292 if (dev->has_tuner)
1293 cap->capabilities |= V4L2_CAP_TUNER;
1294 return 0;
1295 }
1296
1297 /* --- capture ioctls ---------------------------------------- */
1298 case VIDIOC_ENUM_FMT:
1299 {
1300 struct v4l2_fmtdesc *fmtd = arg;
1301
1302 if (fmtd->index != 0)
1303 return -EINVAL;
1304 memset(fmtd, 0, sizeof(*fmtd));
1305 fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1306 strcpy(fmtd->description, "Packed YUY2");
1307 fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
1308 memset(fmtd->reserved, 0, sizeof(fmtd->reserved));
1309 return 0;
1310 }
1311
1312 case VIDIOC_G_FMT:
1313 {
1314 struct v4l2_format *format = arg;
1315
eac94356 1316 em28xx_videodbg("VIDIOC_G_FMT: type=%s\n",
a6c2ba28 1317 format->type ==
1318 V4L2_BUF_TYPE_VIDEO_CAPTURE ?
1319 "V4L2_BUF_TYPE_VIDEO_CAPTURE" : format->type ==
1320 V4L2_BUF_TYPE_VBI_CAPTURE ?
1321 "V4L2_BUF_TYPE_VBI_CAPTURE " :
1322 "not supported");
1323
1324 if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1325 return -EINVAL;
1326
1327 format->fmt.pix.width = dev->width;
1328 format->fmt.pix.height = dev->height;
1329 format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
1330 format->fmt.pix.bytesperline = dev->bytesperline;
1331 format->fmt.pix.sizeimage = dev->frame_size;
1332 format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1333 format->fmt.pix.field = dev->interlaced ? V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
1334
eac94356 1335 em28xx_videodbg("VIDIOC_G_FMT: %dx%d\n", dev->width,
a6c2ba28 1336 dev->height);
1337 return 0;
1338 }
1339
1340 case VIDIOC_TRY_FMT:
1341 case VIDIOC_S_FMT:
1342 {
1343 struct v4l2_format *format = arg;
1344 u32 i;
1345 int ret = 0;
1346 int width = format->fmt.pix.width;
1347 int height = format->fmt.pix.height;
1348 unsigned int hscale, vscale;
1349 unsigned int maxh, maxw;
1350
1351 maxw = norm_maxw(dev);
1352 maxh = norm_maxh(dev);
1353
1354/* int both_fields; */
1355
eac94356 1356 em28xx_videodbg("%s: type=%s\n",
a6c2ba28 1357 cmd ==
1358 VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" :
1359 "VIDIOC_S_FMT",
1360 format->type ==
1361 V4L2_BUF_TYPE_VIDEO_CAPTURE ?
1362 "V4L2_BUF_TYPE_VIDEO_CAPTURE" : format->type ==
1363 V4L2_BUF_TYPE_VBI_CAPTURE ?
1364 "V4L2_BUF_TYPE_VBI_CAPTURE " :
1365 "not supported");
1366
1367 if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1368 return -EINVAL;
1369
eac94356 1370 em28xx_videodbg("%s: requested %dx%d\n",
a6c2ba28 1371 cmd ==
1372 VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" :
1373 "VIDIOC_S_FMT", format->fmt.pix.width,
1374 format->fmt.pix.height);
1375
1376 /* FIXME: Move some code away from here */
1377 /* width must even because of the YUYV format */
1378 /* height must be even because of interlacing */
1379 height &= 0xfffe;
1380 width &= 0xfffe;
1381
1382 if (height < 32)
1383 height = 32;
1384 if (height > maxh)
1385 height = maxh;
1386 if (width < 48)
1387 width = 48;
1388 if (width > maxw)
1389 width = maxw;
1390
74458e6c 1391 if(dev->is_em2800){
52c02fcd 1392 /* the em2800 can only scale down to 50% */
74458e6c
SS		 1393 if(height % (maxh / 2))
1394 height=maxh;
1395 if(width % (maxw / 2))
1396 width=maxw;
52c02fcd
SS		 1397 /* according to empiatech support */
1398 /* the MaxPacketSize is to small to support */
1399 /* framesizes larger than 640x480 @ 30 fps */
1400 /* or 640x576 @ 25 fps. As this would cut */
1401 /* of a part of the image we prefer */
1402 /* 360x576 or 360x480 for now */
74458e6c
SS		 1403 if(width == maxw && height == maxh)
1404 width /= 2;
1405 }
1406
a6c2ba28 1407 if ((hscale =
1408 (((unsigned long)maxw) << 12) / width - 4096L) >=
1409 0x4000)
1410 hscale = 0x3fff;
1411 width =
1412 (((unsigned long)maxw) << 12) / (hscale + 4096L);
1413
1414 if ((vscale =
1415 (((unsigned long)maxh) << 12) / height - 4096L) >=
1416 0x4000)
1417 vscale = 0x3fff;
1418 height =
1419 (((unsigned long)maxh) << 12) / (vscale + 4096L);
1420
1421 format->fmt.pix.width = width;
1422 format->fmt.pix.height = height;
1423 format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
1424 format->fmt.pix.bytesperline = width * 2;
1425 format->fmt.pix.sizeimage = width * 2 * height;
1426 format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1427 format->fmt.pix.field = V4L2_FIELD_INTERLACED;
1428
eac94356 1429 em28xx_videodbg("%s: returned %dx%d (%d, %d)\n",
a6c2ba28 1430 cmd ==
1431 VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" :
1432 "VIDIOC_S_FMT", format->fmt.pix.width,
1433 format->fmt.pix.height, hscale, vscale);
1434
1435 if (cmd == VIDIOC_TRY_FMT)
1436 return 0;
1437
1438 for (i = 0; i < dev->num_frames; i++)
1439 if (dev->frame[i].vma_use_count) {
3acf2809 1440 em28xx_videodbg("VIDIOC_S_FMT failed. "
eac94356 1441 "Unmap the buffers first.\n");
a6c2ba28 1442 return -EINVAL;
1443 }
1444
1445 /* stop io in case it is already in progress */
1446 if (dev->stream == STREAM_ON) {
eac94356 1447 em28xx_videodbg("VIDIOC_SET_FMT: interupting stream\n");
3acf2809 1448 if ((ret = em28xx_stream_interrupt(dev)))
a6c2ba28 1449 return ret;
1450 }
1451
3acf2809 1452 em28xx_release_buffers(dev);
a6c2ba28 1453 dev->io = IO_NONE;
1454
1455 /* set new image size */
1456 dev->width = width;
1457 dev->height = height;
1458 dev->frame_size = dev->width * dev->height * 2;
1459 dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
1460 dev->bytesperline = dev->width * 2;
1461 dev->hscale = hscale;
1462 dev->vscale = vscale;
1463/* dev->both_fileds = both_fileds; */
3acf2809
MCC		 1464 em28xx_uninit_isoc(dev);
1465 em28xx_set_alternate(dev);
1466 em28xx_capture_start(dev, 1);
1467 em28xx_resolution_set(dev);
1468 em28xx_init_isoc(dev);
a6c2ba28 1469
1470 return 0;
1471 }
1472
1473 /* --- streaming capture ------------------------------------- */
1474 case VIDIOC_REQBUFS:
1475 {
1476 struct v4l2_requestbuffers *rb = arg;
1477 u32 i;
1478 int ret;
1479
1480 if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1481 rb->memory != V4L2_MEMORY_MMAP)
1482 return -EINVAL;
1483
1484 if (dev->io == IO_READ) {
3acf2809 1485 em28xx_videodbg ("method is set to read;"
a6c2ba28 1486 " close and open the device again to"
eac94356 1487 " choose the mmap I/O method\n");
a6c2ba28 1488 return -EINVAL;
1489 }
1490
1491 for (i = 0; i < dev->num_frames; i++)
1492 if (dev->frame[i].vma_use_count) {
eac94356 1493 em28xx_videodbg ("VIDIOC_REQBUFS failed; previous buffers are still mapped\n");
a6c2ba28 1494 return -EINVAL;
1495 }
1496
1497 if (dev->stream == STREAM_ON) {
eac94356 1498 em28xx_videodbg("VIDIOC_REQBUFS: interrupting stream\n");
3acf2809 1499 if ((ret = em28xx_stream_interrupt(dev)))
a6c2ba28 1500 return ret;
1501 }
1502
3acf2809 1503 em28xx_empty_framequeues(dev);
a6c2ba28 1504
3acf2809 1505 em28xx_release_buffers(dev);
a6c2ba28 1506 if (rb->count)
1507 rb->count =
3acf2809 1508 em28xx_request_buffers(dev, rb->count);
a6c2ba28 1509
1510 dev->frame_current = NULL;
1511
eac94356 1512 em28xx_videodbg ("VIDIOC_REQBUFS: setting io method to mmap: num bufs %i\n",
a6c2ba28 1513 rb->count);
1514 dev->io = rb->count ? IO_MMAP : IO_NONE;
1515 return 0;
1516 }
1517
1518 case VIDIOC_QUERYBUF:
1519 {
1520 struct v4l2_buffer *b = arg;
1521
1522 if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1523 b->index >= dev->num_frames || dev->io != IO_MMAP)
1524 return -EINVAL;
1525
1526 memcpy(b, &dev->frame[b->index].buf, sizeof(*b));
1527
1528 if (dev->frame[b->index].vma_use_count) {
1529 b->flags |= V4L2_BUF_FLAG_MAPPED;
1530 }
1531 if (dev->frame[b->index].state == F_DONE)
1532 b->flags |= V4L2_BUF_FLAG_DONE;
1533 else if (dev->frame[b->index].state != F_UNUSED)
1534 b->flags |= V4L2_BUF_FLAG_QUEUED;
1535 return 0;
1536 }
1537 case VIDIOC_QBUF:
1538 {
1539 struct v4l2_buffer *b = arg;
1540 unsigned long lock_flags;
1541
1542 if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1543 b->index >= dev->num_frames || dev->io != IO_MMAP) {
1544 return -EINVAL;
1545 }
1546
1547 if (dev->frame[b->index].state != F_UNUSED) {
1548 return -EAGAIN;
1549 }
1550 dev->frame[b->index].state = F_QUEUED;
1551
1552 /* add frame to fifo */
1553 spin_lock_irqsave(&dev->queue_lock, lock_flags);
1554 list_add_tail(&dev->frame[b->index].frame,
1555 &dev->inqueue);
1556 spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
1557
1558 return 0;
1559 }
1560 case VIDIOC_DQBUF:
1561 {
1562 struct v4l2_buffer *b = arg;
3acf2809 1563 struct em28xx_frame_t *f;
a6c2ba28 1564 unsigned long lock_flags;
1565 int ret = 0;
1566
1567 if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE
1568 || dev->io != IO_MMAP)
1569 return -EINVAL;
1570
1571 if (list_empty(&dev->outqueue)) {
1572 if (dev->stream == STREAM_OFF)
1573 return -EINVAL;
1574 if (filp->f_flags & O_NONBLOCK)
1575 return -EAGAIN;
1576 ret = wait_event_interruptible
1577 (dev->wait_frame,
1578 (!list_empty(&dev->outqueue)) ||
1579 (dev->state & DEV_DISCONNECTED));
1580 if (ret)
1581 return ret;
1582 if (dev->state & DEV_DISCONNECTED)
1583 return -ENODEV;
1584 }
1585
1586 spin_lock_irqsave(&dev->queue_lock, lock_flags);
1587 f = list_entry(dev->outqueue.next,
3acf2809 1588 struct em28xx_frame_t, frame);
a6c2ba28 1589 list_del(dev->outqueue.next);
1590 spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
1591
1592 f->state = F_UNUSED;
1593 memcpy(b, &f->buf, sizeof(*b));
1594
1595 if (f->vma_use_count)
1596 b->flags |= V4L2_BUF_FLAG_MAPPED;
1597
1598 return 0;
1599 }
1600 default:
3acf2809
MCC		 1601 return em28xx_do_ioctl(inode, filp, dev, cmd, arg,
1602 em28xx_video_do_ioctl);
a6c2ba28 1603 }
1604 return 0;
1605}
1606
1607/*
3acf2809
MCC		 1608 * em28xx_v4l2_ioctl()
1609 * handle v4l2 ioctl the main action happens in em28xx_v4l2_do_ioctl()
a6c2ba28 1610 */
3acf2809 1611static int em28xx_v4l2_ioctl(struct inode *inode, struct file *filp,
a6c2ba28 1612 unsigned int cmd, unsigned long arg)
1613{
a6c2ba28 1614 int ret = 0;
3acf2809 1615 struct em28xx *dev = filp->private_data;
a6c2ba28 1616
1617 if (down_interruptible(&dev->fileop_lock))
1618 return -ERESTARTSYS;
1619
1620 if (dev->state & DEV_DISCONNECTED) {
3acf2809 1621 em28xx_errdev("v4l2 ioctl: device not present\n");
a6c2ba28 1622 up(&dev->fileop_lock);
1623 return -ENODEV;
1624 }
1625
1626 if (dev->state & DEV_MISCONFIGURED) {
3acf2809 1627 em28xx_errdev
a6c2ba28 1628 ("v4l2 ioctl: device is misconfigured; close and open it again\n");
1629 up(&dev->fileop_lock);
1630 return -EIO;
1631 }
1632
3acf2809 1633 ret = video_usercopy(inode, filp, cmd, arg, em28xx_video_do_ioctl);
a6c2ba28 1634
1635 up(&dev->fileop_lock);
1636
1637 return ret;
1638}
1639
3acf2809 1640static struct file_operations em28xx_v4l_fops = {
a6c2ba28 1641 .owner = THIS_MODULE,
3acf2809
MCC		 1642 .open = em28xx_v4l2_open,
1643 .release = em28xx_v4l2_close,
1644 .ioctl = em28xx_v4l2_ioctl,
1645 .read = em28xx_v4l2_read,
1646 .poll = em28xx_v4l2_poll,
1647 .mmap = em28xx_v4l2_mmap,
a6c2ba28 1648 .llseek = no_llseek,
17cbe2e5
MCC		 1649 .compat_ioctl = v4l_compat_ioctl32,
1650
a6c2ba28 1651};
1652
1653/******************************** usb interface *****************************************/
1654
1655/*
3acf2809 1656 * em28xx_init_dev()
a6c2ba28 1657 * allocates and inits the device structs, registers i2c bus and v4l device
1658 */
3acf2809 1659static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
a6c2ba28 1660 int minor, int model)
1661{
3acf2809 1662 struct em28xx *dev = *devhandle;
a6c2ba28 1663 int retval = -ENOMEM;
1664 int errCode, i;
1665 unsigned int maxh, maxw;
a6c2ba28 1666
a6c2ba28 1667 dev->udev = udev;
1668 dev->model = model;
1669 init_MUTEX(&dev->lock);
1670 init_waitqueue_head(&dev->open);
1671
3acf2809
MCC		 1672 dev->em28xx_write_regs = em28xx_write_regs;
1673 dev->em28xx_read_reg = em28xx_read_reg;
1674 dev->em28xx_read_reg_req_len = em28xx_read_reg_req_len;
1675 dev->em28xx_write_regs_req = em28xx_write_regs_req;
1676 dev->em28xx_read_reg_req = em28xx_read_reg_req;
1677 dev->is_em2800 = em28xx_boards[model].is_em2800;
1678 dev->has_tuner = em28xx_boards[model].has_tuner;
1679 dev->has_msp34xx = em28xx_boards[model].has_msp34xx;
1680 dev->tda9887_conf = em28xx_boards[model].tda9887_conf;
1681 dev->decoder = em28xx_boards[model].decoder;
a6c2ba28 1682
1683 if (tuner >= 0)
1684 dev->tuner_type = tuner;
1685 else
3acf2809 1686 dev->tuner_type = em28xx_boards[model].tuner_type;
a6c2ba28 1687
3acf2809 1688 dev->video_inputs = em28xx_boards[model].vchannels;
a6c2ba28 1689
1690 for (i = 0; i < TVNORMS; i++)
3acf2809 1691 if (em28xx_boards[model].norm == tvnorms[i].mode)
a6c2ba28 1692 break;
1693 if (i == TVNORMS)
1694 i = 0;
1695
1696 dev->tvnorm = &tvnorms[i]; /* set default norm */
1697
3acf2809 1698 em28xx_videodbg("tvnorm=%s\n", dev->tvnorm->name);
a6c2ba28 1699
1700 maxw = norm_maxw(dev);
1701 maxh = norm_maxh(dev);
1702
1703 /* set default image size */
1704 dev->width = maxw;
1705 dev->height = maxh;
3acf2809 1706 dev->interlaced = EM28XX_INTERLACED_DEFAULT;
a6c2ba28 1707 dev->field_size = dev->width * dev->height;
1708 dev->frame_size =
1709 dev->interlaced ? dev->field_size << 1 : dev->field_size;
1710 dev->bytesperline = dev->width * 2;
1711 dev->hscale = 0;
1712 dev->vscale = 0;
1713 dev->ctl_input = 2;
1714
1715 /* setup video picture settings for saa7113h */
1716 memset(&dev->vpic, 0, sizeof(dev->vpic));
1717 dev->vpic.colour = 128 << 8;
1718 dev->vpic.hue = 128 << 8;
1719 dev->vpic.brightness = 128 << 8;
1720 dev->vpic.contrast = 192 << 8;
1721 dev->vpic.whiteness = 128 << 8; /* This one isn't used */
1722 dev->vpic.depth = 16;
1723 dev->vpic.palette = VIDEO_PALETTE_YUV422;
1724
a6c2ba28 1725#ifdef CONFIG_MODULES
1726 /* request some modules */
3acf2809 1727 if (dev->decoder == EM28XX_SAA7113 || dev->decoder == EM28XX_SAA7114)
91cad0f2 1728 request_module("saa711x");
3acf2809 1729 if (dev->decoder == EM28XX_TVP5150)
a6c2ba28 1730 request_module("tvp5150");
1731 if (dev->has_tuner)
1732 request_module("tuner");
1733 if (dev->tda9887_conf)
1734 request_module("tda9887");
1735#endif
3acf2809 1736 errCode = em28xx_config(dev);
a6c2ba28 1737 if (errCode) {
3acf2809 1738 em28xx_errdev("error configuring device\n");
a6c2ba28 1739 kfree(dev);
1740 return -ENOMEM;
1741 }
1742
1743 down(&dev->lock);
1744 /* register i2c bus */
3acf2809 1745 em28xx_i2c_register(dev);
a6c2ba28 1746
1747 /* Do board specific init and eeprom reading */
3acf2809 1748 em28xx_card_setup(dev);
a6c2ba28 1749
1750 /* configure the device */
3acf2809 1751 em28xx_config_i2c(dev);
a6c2ba28 1752
1753 up(&dev->lock);
1754
3acf2809 1755 errCode = em28xx_config(dev);
a6c2ba28 1756
1757#ifdef CONFIG_MODULES
1758 if (dev->has_msp34xx)
1759 request_module("msp3400");
1760#endif
1761 /* allocate and fill v4l2 device struct */
1762 dev->vdev = video_device_alloc();
1763 if (NULL == dev->vdev) {
3acf2809 1764 em28xx_errdev("cannot allocate video_device.\n");
a6c2ba28 1765 kfree(dev);
1766 return -ENOMEM;
1767 }
1768
a6c2ba28 1769 dev->vdev->type = VID_TYPE_CAPTURE;
1770 if (dev->has_tuner)
1771 dev->vdev->type |= VID_TYPE_TUNER;
1772 dev->vdev->hardware = 0;
3acf2809 1773 dev->vdev->fops = &em28xx_v4l_fops;
a6c2ba28 1774 dev->vdev->minor = -1;
1775 dev->vdev->dev = &dev->udev->dev;
1776 dev->vdev->release = video_device_release;
1777 snprintf(dev->vdev->name, sizeof(dev->vdev->name), "%s",
3acf2809
MCC		 1778 "em28xx video");
1779 list_add_tail(&dev->devlist,&em28xx_devlist);
a6c2ba28 1780
1781 /* register v4l2 device */
1782 down(&dev->lock);
1783 if ((retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, -1))) {
3acf2809 1784 em28xx_errdev("unable to register video device (error=%i).\n",
a6c2ba28 1785 retval);
1786 up(&dev->lock);
9c75541f 1787 list_del(&dev->devlist);
a6c2ba28 1788 video_device_release(dev->vdev);
1789 kfree(dev);
1790 return -ENODEV;
1791 }
1792 if (dev->has_msp34xx) {
1793 /* Send a reset to other chips via gpio */
3acf2809 1794 em28xx_write_regs_req(dev, 0x00, 0x08, "\xf7", 1);
a6c2ba28 1795 udelay(2500);
3acf2809 1796 em28xx_write_regs_req(dev, 0x00, 0x08, "\xff", 1);
a6c2ba28 1797 udelay(2500);
1798
1799 }
1800 video_mux(dev, 0);
1801
1802 up(&dev->lock);
1803
3acf2809 1804 em28xx_info("V4L2 device registered as /dev/video%d\n",
a6c2ba28 1805 dev->vdev->minor);
1806
a6c2ba28 1807 return 0;
1808}
1809
1810/*
3acf2809 1811 * em28xx_usb_probe()
a6c2ba28 1812 * checks for supported devices
1813 */
3acf2809 1814static int em28xx_usb_probe(struct usb_interface *interface,
a6c2ba28 1815 const struct usb_device_id *id)
1816{
1817 const struct usb_endpoint_descriptor *endpoint;
1818 struct usb_device *udev;
9d4d9c05 1819 struct usb_interface *uif;
3acf2809 1820 struct em28xx *dev = NULL;
a6c2ba28 1821 int retval = -ENODEV;
d5e52653 1822 int model,i,nr,ifnum;
a6c2ba28 1823
1824 udev = usb_get_dev(interface_to_usbdev(interface));
d5e52653
MCC		 1825 ifnum = interface->altsetting[0].desc.bInterfaceNumber;
1826
a6c2ba28 1827
596d92d5 1828 /* Don't register audio interfaces */
91cad0f2 1829 if (interface->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) {
3acf2809 1830 em28xx_err(DRIVER_NAME " audio device (%04x:%04x): interface %i, class %i\n",
91cad0f2
MCC		 1831 udev->descriptor.idVendor,udev->descriptor.idProduct,
1832 ifnum,
1833 interface->altsetting[0].desc.bInterfaceClass);
596d92d5 1834 return -ENODEV;
91cad0f2
MCC		 1835 }
1836
3acf2809 1837 em28xx_err(DRIVER_NAME " new video device (%04x:%04x): interface %i, class %i\n",
91cad0f2
MCC		 1838 udev->descriptor.idVendor,udev->descriptor.idProduct,
1839 ifnum,
1840 interface->altsetting[0].desc.bInterfaceClass);
596d92d5 1841
d5e52653
MCC		 1842 endpoint = &interface->cur_altsetting->endpoint[1].desc;
1843
a6c2ba28 1844 /* check if the the device has the iso in endpoint at the correct place */
1845 if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
1846 USB_ENDPOINT_XFER_ISOC) {
3acf2809 1847 em28xx_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n");
a6c2ba28 1848 return -ENODEV;
1849 }
1850 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
3acf2809 1851 em28xx_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n");
a6c2ba28 1852 return -ENODEV;
1853 }
1854
596d92d5
MCC		 1855 model=id->driver_info;
1856 nr=interface->minor;
1857
3acf2809 1858 if (nr>EM28XX_MAXBOARDS) {
9d4d9c05 1859 printk (DRIVER_NAME ": Supports only %i em28xx boards.\n",EM28XX_MAXBOARDS);
596d92d5
MCC		 1860 return -ENOMEM;
1861 }
1862
1863 /* allocate memory for our device state and initialize it */
7408187d 1864 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
596d92d5 1865 if (dev == NULL) {
3acf2809 1866 em28xx_err(DRIVER_NAME ": out of memory!\n");
596d92d5
MCC		 1867 return -ENOMEM;
1868 }
596d92d5 1869
9d4d9c05
MCC		 1870 /* compute alternate max packet sizes */
1871 uif = udev->actconfig->interface[0];
1872
1873 dev->num_alt=uif->num_altsetting;
1874 printk(DRIVER_NAME ": Alternate settings: %i\n",dev->num_alt);
1875// dev->alt_max_pkt_size = kmalloc(sizeof(*dev->alt_max_pkt_size)*
1876 dev->alt_max_pkt_size = kmalloc(32*
1877 dev->num_alt,GFP_KERNEL);
1878 if (dev->alt_max_pkt_size == NULL) {
1879 em28xx_err(DRIVER_NAME ": out of memory!\n");
1880 return -ENOMEM;
1881 }
1882
1883 for (i = 0; i < dev->num_alt ; i++) {
1884 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1885 wMaxPacketSize);
1886 dev->alt_max_pkt_size[i] =
1887 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1888 printk(DRIVER_NAME ": Alternate setting %i, max size= %i\n",i,
1889 dev->alt_max_pkt_size[i]);
1890 }
1891
3acf2809 1892 snprintf(dev->name, 29, "em28xx #%d", nr);
596d92d5 1893
3acf2809 1894 if ((card[nr]>=0)&&(card[nr]<em28xx_bcount))
596d92d5
MCC		 1895 model=card[nr];
1896
1897 if ((model==EM2800_BOARD_UNKNOWN)||(model==EM2820_BOARD_UNKNOWN)) {
1898 printk( "%s: Your board has no eeprom inside it and thus can't\n"
1899 "%s: be autodetected. Please pass card=<n> insmod option to\n"
1900 "%s: workaround that. Redirect complaints to the vendor of\n"
1901 "%s: the TV card. Best regards,\n"
1902 "%s: -- tux\n",
1903 dev->name,dev->name,dev->name,dev->name,dev->name);
1904 printk("%s: Here is a list of valid choices for the card=<n> insmod option:\n",
1905 dev->name);
3acf2809 1906 for (i = 0; i < em28xx_bcount; i++) {
596d92d5 1907 printk("%s: card=%d -> %s\n",
3acf2809 1908 dev->name, i, em28xx_boards[i].name);
596d92d5
MCC		 1909 }
1910 }
1911
a6c2ba28 1912 /* allocate device struct */
3acf2809 1913 retval = em28xx_init_dev(&dev, udev, nr, model);
a6c2ba28 1914 if (retval)
1915 return retval;
1916
3acf2809 1917 em28xx_info("Found %s\n", em28xx_boards[model].name);
a6c2ba28 1918
1919 /* save our data pointer in this interface device */
1920 usb_set_intfdata(interface, dev);
1921 return 0;
1922}
1923
1924/*
3acf2809 1925 * em28xx_usb_disconnect()
a6c2ba28 1926 * called when the device gets diconencted
1927 * video device will be unregistered on v4l2_close in case it is still open
1928 */
3acf2809 1929static void em28xx_usb_disconnect(struct usb_interface *interface)
a6c2ba28 1930{
3acf2809 1931 struct em28xx *dev = usb_get_intfdata(interface);
a6c2ba28 1932 usb_set_intfdata(interface, NULL);
1933
c0477ad9
MCC		 1934/*FIXME: IR should be disconnected */
1935
a6c2ba28 1936 if (!dev)
1937 return;
1938
c0477ad9 1939
3acf2809 1940 down_write(&em28xx_disconnect);
a6c2ba28 1941
1942 down(&dev->lock);
1943
3acf2809 1944 em28xx_info("disconnecting %s\n", dev->vdev->name);
a6c2ba28 1945
1946 wake_up_interruptible_all(&dev->open);
1947
1948 if (dev->users) {
3acf2809 1949 em28xx_warn
a6c2ba28 1950 ("device /dev/video%d is open! Deregistration and memory "
1951 "deallocation are deferred on close.\n", dev->vdev->minor);
1952 dev->state |= DEV_MISCONFIGURED;
3acf2809 1953 em28xx_uninit_isoc(dev);
a6c2ba28 1954 dev->state |= DEV_DISCONNECTED;
1955 wake_up_interruptible(&dev->wait_frame);
1956 wake_up_interruptible(&dev->wait_stream);
1957 } else {
1958 dev->state |= DEV_DISCONNECTED;
3acf2809 1959 em28xx_release_resources(dev);
a6c2ba28 1960 }
1961
1962 up(&dev->lock);
1963
9d4d9c05
MCC		 1964 if (!dev->users) {
1965 kfree(dev->alt_max_pkt_size);
a6c2ba28 1966 kfree(dev);
9d4d9c05 1967 }
a6c2ba28 1968
3acf2809 1969 up_write(&em28xx_disconnect);
a6c2ba28 1970}
1971
3acf2809 1972static struct usb_driver em28xx_usb_driver = {
3acf2809
MCC		 1973 .name = "em28xx",
1974 .probe = em28xx_usb_probe,
1975 .disconnect = em28xx_usb_disconnect,
1976 .id_table = em28xx_id_table,
a6c2ba28 1977};
1978
3acf2809 1979static int __init em28xx_module_init(void)
a6c2ba28 1980{
1981 int result;
1982
1983 printk(KERN_INFO DRIVER_NAME " v4l2 driver version %d.%d.%d loaded\n",
3acf2809
MCC		 1984 (EM28XX_VERSION_CODE >> 16) & 0xff,
1985 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
a6c2ba28 1986#ifdef SNAPSHOT
1987 printk(KERN_INFO DRIVER_NAME " snapshot date %04d-%02d-%02d\n",
1988 SNAPSHOT / 10000, (SNAPSHOT / 100) % 100, SNAPSHOT % 100);
1989#endif
1990
1991 /* register this driver with the USB subsystem */
3acf2809 1992 result = usb_register(&em28xx_usb_driver);
a6c2ba28 1993 if (result)
3acf2809 1994 em28xx_err(DRIVER_NAME
a6c2ba28 1995 " usb_register failed. Error number %d.\n", result);
1996
1997 return result;
1998}
1999
3acf2809 2000static void __exit em28xx_module_exit(void)
a6c2ba28 2001{
2002 /* deregister this driver with the USB subsystem */
3acf2809 2003 usb_deregister(&em28xx_usb_driver);
a6c2ba28 2004}
2005
3acf2809
MCC		 2006module_init(em28xx_module_init);
2007module_exit(em28xx_module_exit);
Linux kernel - Deliverables
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