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Diffstat (limited to 'drivers/media/video/em28xx/em28xx-video.c')
-rw-r--r--drivers/media/video/em28xx/em28xx-video.c1933
1 files changed, 1933 insertions, 0 deletions
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
new file mode 100644
index 000000000000..57c1826b928e
--- /dev/null
+++ b/drivers/media/video/em28xx/em28xx-video.c
@@ -0,0 +1,1933 @@
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 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>
29#include <linux/i2c.h>
30#include <linux/version.h>
31#include <linux/video_decoder.h>
32
33#include "em28xx.h"
34#include <media/tuner.h>
35
36#define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
37 "Markus Rechberger <mrechberger@gmail.com>, " \
38 "Mauro Carvalho Chehab <mchehab@brturbo.com.br>, " \
39 "Sascha Sommer <saschasommer@freenet.de>"
40
41#define DRIVER_NAME "em28xx"
42#define DRIVER_DESC "Empia em28xx based USB video device driver"
43#define EM28XX_VERSION_CODE KERNEL_VERSION(0, 0, 1)
44
45#define em28xx_videodbg(fmt, arg...) do {\
46 if (video_debug) \
47 printk(KERN_INFO "%s %s :"fmt, \
48 dev->name, __FUNCTION__ , ##arg); } while (0)
49
50MODULE_AUTHOR(DRIVER_AUTHOR);
51MODULE_DESCRIPTION(DRIVER_DESC);
52MODULE_LICENSE("GPL");
53
54static LIST_HEAD(em28xx_devlist);
55
56static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
57module_param_array(card, int, NULL, 0444);
58MODULE_PARM_DESC(card,"card type");
59
60static int tuner = -1;
61module_param(tuner, int, 0444);
62MODULE_PARM_DESC(tuner, "tuner type");
63
64static unsigned int video_debug = 0;
65module_param(video_debug,int,0644);
66MODULE_PARM_DESC(video_debug,"enable debug messages [video]");
67
68/* supported tv norms */
69static struct em28xx_tvnorm tvnorms[] = {
70 {
71 .name = "PAL",
72 .id = V4L2_STD_PAL,
73 .mode = VIDEO_MODE_PAL,
74 }, {
75 .name = "NTSC",
76 .id = V4L2_STD_NTSC,
77 .mode = VIDEO_MODE_NTSC,
78 }, {
79 .name = "SECAM",
80 .id = V4L2_STD_SECAM,
81 .mode = VIDEO_MODE_SECAM,
82 }, {
83 .name = "PAL-M",
84 .id = V4L2_STD_PAL_M,
85 .mode = VIDEO_MODE_PAL,
86 }
87};
88
89static const unsigned char saa7114_i2c_init[] = {
90 0x00,0x00,0x01,0x08,0x02,0xc4,0x03,0x30,0x04,0x90,0x05,0x90,0x06,0xeb,0x07,0xe0,
91 0x08,0x88,0x09,0x40,0x0a,0x80,0x0b,0x44,0x0c,0x40,0x0d,0x00,0x0e,0x81,0x0f,0x2a,
92 0x10,0x06,0x11,0x00,0x12,0xc8,0x13,0x80,0x14,0x00,0x15,0x11,0x16,0x01,0x17,0x42,
93 0x18,0x40,0x19,0x80,0x40,0x00,0x41,0xff,0x42,0xff,0x43,0xff,0x44,0xff,0x45,0xff,
94 0x46,0xff,0x47,0xff,0x48,0xff,0x49,0xff,0x4a,0xff,0x4b,0xff,0x4c,0xff,0x4d,0xff,
95 0x4e,0xff,0x4f,0xff,0x50,0xff,0x51,0xff,0x52,0xff,0x53,0xff,0x54,0x5f,0x55,0xff,
96 0x56,0xff,0x57,0xff,0x58,0x00,0x59,0x47,0x5a,0x03,0x5b,0x03,0x5d,0x3e,0x5e,0x00,
97 0x80,0x1c,0x83,0x01,0x84,0xa5,0x85,0x10,0x86,0x45,0x87,0x41,0x88,0xf0,0x88,0x00,
98 0x88,0xf0,0x90,0x00,0x91,0x08,0x92,0x00,0x93,0x80,0x94,0x08,0x95,0x00,0x96,0xc0,
99 0x97,0x02,0x98,0x13,0x99,0x00,0x9a,0x38,0x9b,0x01,0x9c,0x80,0x9d,0x02,0x9e,0x06,
100 0x9f,0x01,0xa0,0x01,0xa1,0x00,0xa2,0x00,0xa4,0x80,0xa5,0x36,0xa6,0x36,0xa8,0x67,
101 0xa9,0x04,0xaa,0x00,0xac,0x33,0xad,0x02,0xae,0x00,0xb0,0xcd,0xb1,0x04,0xb2,0xcd,
102 0xb3,0x04,0xb4,0x01,0xb8,0x00,0xb9,0x00,0xba,0x00,0xbb,0x00,0xbc,0x00,0xbd,0x00,
103 0xbe,0x00,0xbf,0x00
104};
105
106#define TVNORMS ARRAY_SIZE(tvnorms)
107
108/* supported controls */
109static struct v4l2_queryctrl em28xx_qctrl[] = {
110 {
111 .id = V4L2_CID_BRIGHTNESS,
112 .type = V4L2_CTRL_TYPE_INTEGER,
113 .name = "Brightness",
114 .minimum = -128,
115 .maximum = 127,
116 .step = 1,
117 .default_value = 0,
118 .flags = 0,
119 },{
120 .id = V4L2_CID_CONTRAST,
121 .type = V4L2_CTRL_TYPE_INTEGER,
122 .name = "Contrast",
123 .minimum = 0x0,
124 .maximum = 0x1f,
125 .step = 0x1,
126 .default_value = 0x10,
127 .flags = 0,
128 },{
129 .id = V4L2_CID_SATURATION,
130 .type = V4L2_CTRL_TYPE_INTEGER,
131 .name = "Saturation",
132 .minimum = 0x0,
133 .maximum = 0x1f,
134 .step = 0x1,
135 .default_value = 0x10,
136 .flags = 0,
137 },{
138 .id = V4L2_CID_AUDIO_VOLUME,
139 .type = V4L2_CTRL_TYPE_INTEGER,
140 .name = "Volume",
141 .minimum = 0x0,
142 .maximum = 0x1f,
143 .step = 0x1,
144 .default_value = 0x1f,
145 .flags = 0,
146 },{
147 .id = V4L2_CID_AUDIO_MUTE,
148 .type = V4L2_CTRL_TYPE_BOOLEAN,
149 .name = "Mute",
150 .minimum = 0,
151 .maximum = 1,
152 .step = 1,
153 .default_value = 1,
154 .flags = 0,
155 },{
156 .id = V4L2_CID_RED_BALANCE,
157 .type = V4L2_CTRL_TYPE_INTEGER,
158 .name = "Red chroma balance",
159 .minimum = -128,
160 .maximum = 127,
161 .step = 1,
162 .default_value = 0,
163 .flags = 0,
164 },{
165 .id = V4L2_CID_BLUE_BALANCE,
166 .type = V4L2_CTRL_TYPE_INTEGER,
167 .name = "Blue chroma balance",
168 .minimum = -128,
169 .maximum = 127,
170 .step = 1,
171 .default_value = 0,
172 .flags = 0,
173 },{
174 .id = V4L2_CID_GAMMA,
175 .type = V4L2_CTRL_TYPE_INTEGER,
176 .name = "Gamma",
177 .minimum = 0x0,
178 .maximum = 0x3f,
179 .step = 0x1,
180 .default_value = 0x20,
181 .flags = 0,
182 }
183};
184
185static struct usb_driver em28xx_usb_driver;
186
187static DECLARE_MUTEX(em28xx_sysfs_lock);
188static DECLARE_RWSEM(em28xx_disconnect);
189
190/********************* v4l2 interface ******************************************/
191
192static inline unsigned long kvirt_to_pa(unsigned long adr)
193{
194 unsigned long kva, ret;
195
196 kva = (unsigned long)page_address(vmalloc_to_page((void *)adr));
197 kva |= adr & (PAGE_SIZE - 1);
198 ret = __pa(kva);
199 return ret;
200}
201
202/*
203 * em28xx_config()
204 * inits registers with sane defaults
205 */
206static int em28xx_config(struct em28xx *dev)
207{
208
209 /* Sets I2C speed to 100 KHz */
210 em28xx_write_regs_req(dev, 0x00, 0x06, "\x40", 1);
211
212 /* enable vbi capturing */
213 em28xx_audio_usb_mute(dev, 1);
214 dev->mute = 1; /* maybe not the right place... */
215 dev->volume = 0x1f;
216 em28xx_audio_analog_set(dev);
217 em28xx_audio_analog_setup(dev);
218 em28xx_outfmt_set_yuv422(dev);
219 em28xx_colorlevels_set_default(dev);
220 em28xx_compression_disable(dev);
221
222 return 0;
223}
224
225/*
226 * em28xx_config_i2c()
227 * configure i2c attached devices
228 */
229void em28xx_config_i2c(struct em28xx *dev)
230{
231 struct v4l2_frequency f;
232 struct video_decoder_init em28xx_vdi = {.data = NULL };
233
234
235 /* configure decoder */
236 if(dev->model == EM2820_BOARD_MSI_VOX_USB_2){
237 em28xx_vdi.data=saa7114_i2c_init;
238 em28xx_vdi.len=sizeof(saa7114_i2c_init);
239 }
240
241
242 em28xx_i2c_call_clients(dev, DECODER_INIT, &em28xx_vdi);
243 em28xx_i2c_call_clients(dev, DECODER_SET_INPUT, &dev->ctl_input);
244/* em28xx_i2c_call_clients(dev,DECODER_SET_PICTURE, &dev->vpic); */
245/* em28xx_i2c_call_clients(dev,DECODER_SET_NORM,&dev->tvnorm->id); */
246/* em28xx_i2c_call_clients(dev,DECODER_ENABLE_OUTPUT,&output); */
247/* em28xx_i2c_call_clients(dev,DECODER_DUMP, NULL); */
248
249 /* configure tuner */
250 f.tuner = 0;
251 f.type = V4L2_TUNER_ANALOG_TV;
252 f.frequency = 9076; /* FIXME:remove magic number */
253 dev->ctl_freq = f.frequency;
254 em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, &f);
255
256 /* configure tda9887 */
257
258
259/* em28xx_i2c_call_clients(dev,VIDIOC_S_STD,&dev->tvnorm->id); */
260}
261
262/*
263 * em28xx_empty_framequeues()
264 * prepare queues for incoming and outgoing frames
265 */
266static void em28xx_empty_framequeues(struct em28xx *dev)
267{
268 u32 i;
269
270 INIT_LIST_HEAD(&dev->inqueue);
271 INIT_LIST_HEAD(&dev->outqueue);
272
273 for (i = 0; i < EM28XX_NUM_FRAMES; i++) {
274 dev->frame[i].state = F_UNUSED;
275 dev->frame[i].buf.bytesused = 0;
276 }
277}
278
279static void video_mux(struct em28xx *dev, int index)
280{
281 int input, ainput;
282
283 input = INPUT(index)->vmux;
284 dev->ctl_input = index;
285 dev->ctl_ainput = INPUT(index)->amux;
286
287 em28xx_i2c_call_clients(dev, DECODER_SET_INPUT, &input);
288
289
290 em28xx_videodbg("Setting input index=%d, vmux=%d, amux=%d\n",index,input,dev->ctl_ainput);
291
292 if (dev->has_msp34xx) {
293 em28xx_i2c_call_clients(dev, VIDIOC_S_AUDIO, &dev->ctl_ainput);
294 ainput = EM28XX_AUDIO_SRC_TUNER;
295 em28xx_audio_source(dev, ainput);
296 } else {
297 switch (dev->ctl_ainput) {
298 case 0:
299 ainput = EM28XX_AUDIO_SRC_TUNER;
300 break;
301 default:
302 ainput = EM28XX_AUDIO_SRC_LINE;
303 }
304 em28xx_audio_source(dev, ainput);
305 }
306}
307
308/*
309 * em28xx_v4l2_open()
310 * inits the device and starts isoc transfer
311 */
312static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
313{
314 int minor = iminor(inode);
315 int errCode = 0;
316 struct em28xx *h,*dev = NULL;
317 struct list_head *list;
318
319 list_for_each(list,&em28xx_devlist) {
320 h = list_entry(list, struct em28xx, devlist);
321 if (h->vdev->minor == minor) {
322 dev = h;
323 }
324 }
325
326 filp->private_data=dev;
327
328
329 em28xx_videodbg("users=%d\n", dev->users);
330
331 if (!down_read_trylock(&em28xx_disconnect))
332 return -ERESTARTSYS;
333
334 if (dev->users) {
335 em28xx_warn("this driver can be opened only once\n");
336 up_read(&em28xx_disconnect);
337 return -EBUSY;
338 }
339
340/* if(dev->vbi_dev->minor == minor){
341 dev->type=V4L2_BUF_TYPE_VBI_CAPTURE;
342 }*/
343 if (dev->vdev->minor == minor) {
344 dev->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
345 }
346
347 init_MUTEX(&dev->fileop_lock); /* to 1 == available */
348 spin_lock_init(&dev->queue_lock);
349 init_waitqueue_head(&dev->wait_frame);
350 init_waitqueue_head(&dev->wait_stream);
351
352 down(&dev->lock);
353
354 em28xx_set_alternate(dev);
355
356 dev->width = norm_maxw(dev);
357 dev->height = norm_maxh(dev);
358 dev->frame_size = dev->width * dev->height * 2;
359 dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
360 dev->bytesperline = dev->width * 2;
361 dev->hscale = 0;
362 dev->vscale = 0;
363
364 em28xx_capture_start(dev, 1);
365 em28xx_resolution_set(dev);
366
367 /* start the transfer */
368 errCode = em28xx_init_isoc(dev);
369 if (errCode)
370 goto err;
371
372 dev->users++;
373 filp->private_data = dev;
374 dev->io = IO_NONE;
375 dev->stream = STREAM_OFF;
376 dev->num_frames = 0;
377
378 /* prepare queues */
379 em28xx_empty_framequeues(dev);
380
381 dev->state |= DEV_INITIALIZED;
382
383 video_mux(dev, 0);
384
385 err:
386 up(&dev->lock);
387 up_read(&em28xx_disconnect);
388 return errCode;
389}
390
391/*
392 * em28xx_realease_resources()
393 * unregisters the v4l2,i2c and usb devices
394 * called when the device gets disconected or at module unload
395*/
396static void em28xx_release_resources(struct em28xx *dev)
397{
398 down(&em28xx_sysfs_lock);
399
400 em28xx_info("V4L2 device /dev/video%d deregistered\n",
401 dev->vdev->minor);
402 list_del(&dev->devlist);
403 video_unregister_device(dev->vdev);
404/* video_unregister_device(dev->vbi_dev); */
405 em28xx_i2c_unregister(dev);
406 usb_put_dev(dev->udev);
407 up(&em28xx_sysfs_lock);
408}
409
410/*
411 * em28xx_v4l2_close()
412 * stops streaming and deallocates all resources allocated by the v4l2 calls and ioctls
413 */
414static int em28xx_v4l2_close(struct inode *inode, struct file *filp)
415{
416 int errCode;
417 struct em28xx *dev=filp->private_data;
418
419 em28xx_videodbg("users=%d\n", dev->users);
420
421 down(&dev->lock);
422
423 em28xx_uninit_isoc(dev);
424
425 em28xx_release_buffers(dev);
426
427 /* the device is already disconnect, free the remaining resources */
428 if (dev->state & DEV_DISCONNECTED) {
429 em28xx_release_resources(dev);
430 up(&dev->lock);
431 kfree(dev);
432 return 0;
433 }
434
435 /* set alternate 0 */
436 dev->alt = 0;
437 em28xx_videodbg("setting alternate 0\n");
438 errCode = usb_set_interface(dev->udev, 0, 0);
439 if (errCode < 0) {
440 em28xx_errdev ("cannot change alternate number to 0 (error=%i)\n",
441 errCode);
442 }
443
444 dev->users--;
445 wake_up_interruptible_nr(&dev->open, 1);
446 up(&dev->lock);
447 return 0;
448}
449
450/*
451 * em28xx_v4l2_read()
452 * will allocate buffers when called for the first time
453 */
454static ssize_t
455em28xx_v4l2_read(struct file *filp, char __user * buf, size_t count,
456 loff_t * f_pos)
457{
458 struct em28xx_frame_t *f, *i;
459 unsigned long lock_flags;
460 int ret = 0;
461 struct em28xx *dev = filp->private_data;
462
463 if (down_interruptible(&dev->fileop_lock))
464 return -ERESTARTSYS;
465
466 if (dev->state & DEV_DISCONNECTED) {
467 em28xx_videodbg("device not present\n");
468 up(&dev->fileop_lock);
469 return -ENODEV;
470 }
471
472 if (dev->state & DEV_MISCONFIGURED) {
473 em28xx_videodbg("device misconfigured; close and open it again\n");
474 up(&dev->fileop_lock);
475 return -EIO;
476 }
477
478 if (dev->io == IO_MMAP) {
479 em28xx_videodbg ("IO method is set to mmap; close and open"
480 " the device again to choose the read method\n");
481 up(&dev->fileop_lock);
482 return -EINVAL;
483 }
484
485 if (dev->io == IO_NONE) {
486 if (!em28xx_request_buffers(dev, EM28XX_NUM_READ_FRAMES)) {
487 em28xx_errdev("read failed, not enough memory\n");
488 up(&dev->fileop_lock);
489 return -ENOMEM;
490 }
491 dev->io = IO_READ;
492 dev->stream = STREAM_ON;
493 em28xx_queue_unusedframes(dev);
494 }
495
496 if (!count) {
497 up(&dev->fileop_lock);
498 return 0;
499 }
500
501 if (list_empty(&dev->outqueue)) {
502 if (filp->f_flags & O_NONBLOCK) {
503 up(&dev->fileop_lock);
504 return -EAGAIN;
505 }
506 ret = wait_event_interruptible
507 (dev->wait_frame,
508 (!list_empty(&dev->outqueue)) ||
509 (dev->state & DEV_DISCONNECTED));
510 if (ret) {
511 up(&dev->fileop_lock);
512 return ret;
513 }
514 if (dev->state & DEV_DISCONNECTED) {
515 up(&dev->fileop_lock);
516 return -ENODEV;
517 }
518 }
519
520 f = list_entry(dev->outqueue.prev, struct em28xx_frame_t, frame);
521
522 spin_lock_irqsave(&dev->queue_lock, lock_flags);
523 list_for_each_entry(i, &dev->outqueue, frame)
524 i->state = F_UNUSED;
525 INIT_LIST_HEAD(&dev->outqueue);
526 spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
527
528 em28xx_queue_unusedframes(dev);
529
530 if (count > f->buf.length)
531 count = f->buf.length;
532
533 if (copy_to_user(buf, f->bufmem, count)) {
534 up(&dev->fileop_lock);
535 return -EFAULT;
536 }
537 *f_pos += count;
538
539 up(&dev->fileop_lock);
540
541 return count;
542}
543
544/*
545 * em28xx_v4l2_poll()
546 * will allocate buffers when called for the first time
547 */
548static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait)
549{
550 unsigned int mask = 0;
551 struct em28xx *dev = filp->private_data;
552
553 if (down_interruptible(&dev->fileop_lock))
554 return POLLERR;
555
556 if (dev->state & DEV_DISCONNECTED) {
557 em28xx_videodbg("device not present\n");
558 } else if (dev->state & DEV_MISCONFIGURED) {
559 em28xx_videodbg("device is misconfigured; close and open it again\n");
560 } else {
561 if (dev->io == IO_NONE) {
562 if (!em28xx_request_buffers
563 (dev, EM28XX_NUM_READ_FRAMES)) {
564 em28xx_warn
565 ("poll() failed, not enough memory\n");
566 } else {
567 dev->io = IO_READ;
568 dev->stream = STREAM_ON;
569 }
570 }
571
572 if (dev->io == IO_READ) {
573 em28xx_queue_unusedframes(dev);
574 poll_wait(filp, &dev->wait_frame, wait);
575
576 if (!list_empty(&dev->outqueue))
577 mask |= POLLIN | POLLRDNORM;
578
579 up(&dev->fileop_lock);
580
581 return mask;
582 }
583 }
584
585 up(&dev->fileop_lock);
586 return POLLERR;
587}
588
589/*
590 * em28xx_vm_open()
591 */
592static void em28xx_vm_open(struct vm_area_struct *vma)
593{
594 struct em28xx_frame_t *f = vma->vm_private_data;
595 f->vma_use_count++;
596}
597
598/*
599 * em28xx_vm_close()
600 */
601static void em28xx_vm_close(struct vm_area_struct *vma)
602{
603 /* NOTE: buffers are not freed here */
604 struct em28xx_frame_t *f = vma->vm_private_data;
605 f->vma_use_count--;
606}
607
608static struct vm_operations_struct em28xx_vm_ops = {
609 .open = em28xx_vm_open,
610 .close = em28xx_vm_close,
611};
612
613/*
614 * em28xx_v4l2_mmap()
615 */
616static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
617{
618 unsigned long size = vma->vm_end - vma->vm_start,
619 start = vma->vm_start, pos, page;
620 u32 i;
621
622 struct em28xx *dev = filp->private_data;
623
624 if (down_interruptible(&dev->fileop_lock))
625 return -ERESTARTSYS;
626
627 if (dev->state & DEV_DISCONNECTED) {
628 em28xx_videodbg("mmap: device not present\n");
629 up(&dev->fileop_lock);
630 return -ENODEV;
631 }
632
633 if (dev->state & DEV_MISCONFIGURED) {
634 em28xx_videodbg ("mmap: Device is misconfigured; close and "
635 "open it again\n");
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) {
651 em28xx_videodbg("mmap: user supplied mapping address is out of range\n");
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
660 pos = (unsigned long)dev->frame[i].bufmem;
661 while (size > 0) { /* size is page-aligned */
662 page = vmalloc_to_pfn((void *)pos);
663 if (remap_pfn_range(vma, start, page, PAGE_SIZE,
664 vma->vm_page_prot)) {
665 em28xx_videodbg("mmap: rename page map failed\n");
666 up(&dev->fileop_lock);
667 return -EAGAIN;
668 }
669 start += PAGE_SIZE;
670 pos += PAGE_SIZE;
671 size -= PAGE_SIZE;
672 }
673
674 vma->vm_ops = &em28xx_vm_ops;
675 vma->vm_private_data = &dev->frame[i];
676
677 em28xx_vm_open(vma);
678 up(&dev->fileop_lock);
679 return 0;
680}
681
682/*
683 * em28xx_get_ctrl()
684 * return the current saturation, brightness or contrast, mute state
685 */
686static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
687{
688 s32 tmp;
689 switch (ctrl->id) {
690 case V4L2_CID_AUDIO_MUTE:
691 ctrl->value = dev->mute;
692 return 0;
693 case V4L2_CID_AUDIO_VOLUME:
694 ctrl->value = dev->volume;
695 return 0;
696 case V4L2_CID_BRIGHTNESS:
697 if ((tmp = em28xx_brightness_get(dev)) < 0)
698 return -EIO;
699 ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
700 return 0;
701 case V4L2_CID_CONTRAST:
702 if ((ctrl->value = em28xx_contrast_get(dev)) < 0)
703 return -EIO;
704 return 0;
705 case V4L2_CID_SATURATION:
706 if ((ctrl->value = em28xx_saturation_get(dev)) < 0)
707 return -EIO;
708 return 0;
709 case V4L2_CID_RED_BALANCE:
710 if ((tmp = em28xx_v_balance_get(dev)) < 0)
711 return -EIO;
712 ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
713 return 0;
714 case V4L2_CID_BLUE_BALANCE:
715 if ((tmp = em28xx_u_balance_get(dev)) < 0)
716 return -EIO;
717 ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
718 return 0;
719 case V4L2_CID_GAMMA:
720 if ((ctrl->value = em28xx_gamma_get(dev)) < 0)
721 return -EIO;
722 return 0;
723 default:
724 return -EINVAL;
725 }
726}
727
728/*
729 * em28xx_set_ctrl()
730 * mute or set new saturation, brightness or contrast
731 */
732static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
733{
734 switch (ctrl->id) {
735 case V4L2_CID_AUDIO_MUTE:
736 if (ctrl->value != dev->mute) {
737 dev->mute = ctrl->value;
738 em28xx_audio_usb_mute(dev, ctrl->value);
739 return em28xx_audio_analog_set(dev);
740 }
741 return 0;
742 case V4L2_CID_AUDIO_VOLUME:
743 dev->volume = ctrl->value;
744 return em28xx_audio_analog_set(dev);
745 case V4L2_CID_BRIGHTNESS:
746 return em28xx_brightness_set(dev, ctrl->value);
747 case V4L2_CID_CONTRAST:
748 return em28xx_contrast_set(dev, ctrl->value);
749 case V4L2_CID_SATURATION:
750 return em28xx_saturation_set(dev, ctrl->value);
751 case V4L2_CID_RED_BALANCE:
752 return em28xx_v_balance_set(dev, ctrl->value);
753 case V4L2_CID_BLUE_BALANCE:
754 return em28xx_u_balance_set(dev, ctrl->value);
755 case V4L2_CID_GAMMA:
756 return em28xx_gamma_set(dev, ctrl->value);
757 default:
758 return -EINVAL;
759 }
760}
761
762/*
763 * em28xx_stream_interrupt()
764 * stops streaming
765 */
766static int em28xx_stream_interrupt(struct em28xx *dev)
767{
768 int ret = 0;
769
770 /* stop reading from the device */
771
772 dev->stream = STREAM_INTERRUPT;
773 ret = wait_event_timeout(dev->wait_stream,
774 (dev->stream == STREAM_OFF) ||
775 (dev->state & DEV_DISCONNECTED),
776 EM28XX_URB_TIMEOUT);
777 if (dev->state & DEV_DISCONNECTED)
778 return -ENODEV;
779 else if (ret) {
780 dev->state |= DEV_MISCONFIGURED;
781 em28xx_videodbg("device is misconfigured; close and "
782 "open /dev/video%d again\n", dev->vdev->minor);
783 return ret;
784 }
785
786 return 0;
787}
788
789static int em28xx_set_norm(struct em28xx *dev, int width, int height)
790{
791 unsigned int hscale, vscale;
792 unsigned int maxh, maxw;
793
794 maxw = norm_maxw(dev);
795 maxh = norm_maxh(dev);
796
797 /* width must even because of the YUYV format */
798 /* height must be even because of interlacing */
799 height &= 0xfffe;
800 width &= 0xfffe;
801
802 if (height < 32)
803 height = 32;
804 if (height > maxh)
805 height = maxh;
806 if (width < 48)
807 width = 48;
808 if (width > maxw)
809 width = maxw;
810
811 if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000)
812 hscale = 0x3fff;
813 width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
814
815 if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000)
816 vscale = 0x3fff;
817 height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
818
819 /* set new image size */
820 dev->width = width;
821 dev->height = height;
822 dev->frame_size = dev->width * dev->height * 2;
823 dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
824 dev->bytesperline = dev->width * 2;
825 dev->hscale = hscale;
826 dev->vscale = vscale;
827
828 em28xx_resolution_set(dev);
829
830 return 0;
831}
832
833/*
834 * em28xx_v4l2_do_ioctl()
835 * This function is _not_ called directly, but from
836 * em28xx_v4l2_ioctl. Userspace
837 * copying is done already, arg is a kernel pointer.
838 */
839static int em28xx_do_ioctl(struct inode *inode, struct file *filp,
840 struct em28xx *dev, unsigned int cmd, void *arg,
841 v4l2_kioctl driver_ioctl)
842{
843 int ret;
844
845 switch (cmd) {
846 /* ---------- tv norms ---------- */
847 case VIDIOC_ENUMSTD:
848 {
849 struct v4l2_standard *e = arg;
850 unsigned int i;
851
852 i = e->index;
853 if (i >= TVNORMS)
854 return -EINVAL;
855 ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
856 tvnorms[e->index].name);
857 e->index = i;
858 if (ret < 0)
859 return ret;
860 return 0;
861 }
862 case VIDIOC_G_STD:
863 {
864 v4l2_std_id *id = arg;
865
866 *id = dev->tvnorm->id;
867 return 0;
868 }
869 case VIDIOC_S_STD:
870 {
871 v4l2_std_id *id = arg;
872 unsigned int i;
873
874 for (i = 0; i < TVNORMS; i++)
875 if (*id == tvnorms[i].id)
876 break;
877 if (i == TVNORMS)
878 for (i = 0; i < TVNORMS; i++)
879 if (*id & tvnorms[i].id)
880 break;
881 if (i == TVNORMS)
882 return -EINVAL;
883
884 down(&dev->lock);
885 dev->tvnorm = &tvnorms[i];
886
887 em28xx_set_norm(dev, dev->width, dev->height);
888
889/*
890 dev->width=norm_maxw(dev);
891 dev->height=norm_maxh(dev);
892 dev->frame_size=dev->width*dev->height*2;
893 dev->field_size=dev->frame_size>>1;
894 dev->bytesperline=dev->width*2;
895 dev->hscale=0;
896 dev->vscale=0;
897
898 em28xx_resolution_set(dev);
899*/
900/*
901 em28xx_uninit_isoc(dev);
902 em28xx_set_alternate(dev);
903 em28xx_capture_start(dev, 1);
904 em28xx_resolution_set(dev);
905 em28xx_init_isoc(dev);
906*/
907 em28xx_i2c_call_clients(dev, DECODER_SET_NORM,
908 &tvnorms[i].mode);
909 em28xx_i2c_call_clients(dev, VIDIOC_S_STD,
910 &dev->tvnorm->id);
911
912 up(&dev->lock);
913
914 return 0;
915 }
916
917 /* ------ input switching ---------- */
918 case VIDIOC_ENUMINPUT:
919 {
920 struct v4l2_input *i = arg;
921 unsigned int n;
922 static const char *iname[] = {
923 [EM28XX_VMUX_COMPOSITE1] = "Composite1",
924 [EM28XX_VMUX_COMPOSITE2] = "Composite2",
925 [EM28XX_VMUX_COMPOSITE3] = "Composite3",
926 [EM28XX_VMUX_COMPOSITE4] = "Composite4",
927 [EM28XX_VMUX_SVIDEO] = "S-Video",
928 [EM28XX_VMUX_TELEVISION] = "Television",
929 [EM28XX_VMUX_CABLE] = "Cable TV",
930 [EM28XX_VMUX_DVB] = "DVB",
931 [EM28XX_VMUX_DEBUG] = "for debug only",
932 };
933
934 n = i->index;
935 if (n >= MAX_EM28XX_INPUT)
936 return -EINVAL;
937 if (0 == INPUT(n)->type)
938 return -EINVAL;
939 memset(i, 0, sizeof(*i));
940 i->index = n;
941 i->type = V4L2_INPUT_TYPE_CAMERA;
942 strcpy(i->name, iname[INPUT(n)->type]);
943 if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
944 (EM28XX_VMUX_CABLE == INPUT(n)->type))
945 i->type = V4L2_INPUT_TYPE_TUNER;
946 for (n = 0; n < ARRAY_SIZE(tvnorms); n++)
947 i->std |= tvnorms[n].id;
948 return 0;
949 }
950
951 case VIDIOC_G_INPUT:
952 {
953 int *i = arg;
954 *i = dev->ctl_input;
955
956 return 0;
957 }
958
959 case VIDIOC_S_INPUT:
960 {
961 int *index = arg;
962
963 if (*index >= MAX_EM28XX_INPUT)
964 return -EINVAL;
965 if (0 == INPUT(*index)->type)
966 return -EINVAL;
967
968 down(&dev->lock);
969 video_mux(dev, *index);
970 up(&dev->lock);
971
972 return 0;
973 }
974
975 case VIDIOC_G_AUDIO:
976 {
977 struct v4l2_audio *a = arg;
978 unsigned int index = a->index;
979
980 if (a->index > 1)
981 return -EINVAL;
982 memset(a, 0, sizeof(*a));
983 index = dev->ctl_ainput;
984
985 if (index == 0) {
986 strcpy(a->name, "Television");
987 } else {
988 strcpy(a->name, "Line In");
989 }
990 a->capability = V4L2_AUDCAP_STEREO;
991 a->index = index;
992 return 0;
993 }
994
995 case VIDIOC_S_AUDIO:
996 {
997 struct v4l2_audio *a = arg;
998 if (a->index != dev->ctl_ainput)
999 return -EINVAL;
1000
1001 return 0;
1002 }
1003
1004 /* --- controls ---------------------------------------------- */
1005 case VIDIOC_QUERYCTRL:
1006 {
1007 struct v4l2_queryctrl *qc = arg;
1008 u8 i, n;
1009 n = sizeof(em28xx_qctrl) / sizeof(em28xx_qctrl[0]);
1010 for (i = 0; i < n; i++)
1011 if (qc->id && qc->id == em28xx_qctrl[i].id) {
1012 memcpy(qc, &(em28xx_qctrl[i]),
1013 sizeof(*qc));
1014 return 0;
1015 }
1016
1017 return -EINVAL;
1018 }
1019
1020 case VIDIOC_G_CTRL:
1021 {
1022 struct v4l2_control *ctrl = arg;
1023
1024
1025 return em28xx_get_ctrl(dev, ctrl);
1026 }
1027
1028 case VIDIOC_S_CTRL_OLD: /* ??? */
1029 case VIDIOC_S_CTRL:
1030 {
1031 struct v4l2_control *ctrl = arg;
1032 u8 i, n;
1033
1034
1035 n = sizeof(em28xx_qctrl) / sizeof(em28xx_qctrl[0]);
1036 for (i = 0; i < n; i++)
1037 if (ctrl->id == em28xx_qctrl[i].id) {
1038 if (ctrl->value <
1039 em28xx_qctrl[i].minimum
1040 || ctrl->value >
1041 em28xx_qctrl[i].maximum)
1042 return -ERANGE;
1043
1044 return em28xx_set_ctrl(dev, ctrl);
1045 }
1046 return -EINVAL;
1047 }
1048
1049 /* --- tuner ioctls ------------------------------------------ */
1050 case VIDIOC_G_TUNER:
1051 {
1052 struct v4l2_tuner *t = arg;
1053 int status = 0;
1054
1055 if (0 != t->index)
1056 return -EINVAL;
1057
1058 memset(t, 0, sizeof(*t));
1059 strcpy(t->name, "Tuner");
1060 t->type = V4L2_TUNER_ANALOG_TV;
1061 t->capability = V4L2_TUNER_CAP_NORM;
1062 t->rangehigh = 0xffffffffUL; /* FIXME: set correct range */
1063/* t->signal = 0xffff;*/
1064/* em28xx_i2c_call_clients(dev,VIDIOC_G_TUNER,t);*/
1065 /* No way to get signal strength? */
1066 down(&dev->lock);
1067 em28xx_i2c_call_clients(dev, DECODER_GET_STATUS,
1068 &status);
1069 up(&dev->lock);
1070 t->signal =
1071 (status & DECODER_STATUS_GOOD) != 0 ? 0xffff : 0;
1072
1073 em28xx_videodbg("VIDIO_G_TUNER: signal=%x, afc=%x\n", t->signal,
1074 t->afc);
1075 return 0;
1076 }
1077 case VIDIOC_S_TUNER:
1078 {
1079 struct v4l2_tuner *t = arg;
1080 int status = 0;
1081
1082 if (0 != t->index)
1083 return -EINVAL;
1084 memset(t, 0, sizeof(*t));
1085 strcpy(t->name, "Tuner");
1086 t->type = V4L2_TUNER_ANALOG_TV;
1087 t->capability = V4L2_TUNER_CAP_NORM;
1088 t->rangehigh = 0xffffffffUL; /* FIXME: set correct range */
1089/* t->signal = 0xffff; */
1090 /* No way to get signal strength? */
1091 down(&dev->lock);
1092 em28xx_i2c_call_clients(dev, DECODER_GET_STATUS,
1093 &status);
1094 up(&dev->lock);
1095 t->signal =
1096 (status & DECODER_STATUS_GOOD) != 0 ? 0xffff : 0;
1097
1098 em28xx_videodbg("VIDIO_S_TUNER: signal=%x, afc=%x\n",
1099 t->signal, t->afc);
1100 return 0;
1101 }
1102 case VIDIOC_G_FREQUENCY:
1103 {
1104 struct v4l2_frequency *f = arg;
1105
1106 memset(f, 0, sizeof(*f));
1107 f->type = V4L2_TUNER_ANALOG_TV;
1108 f->frequency = dev->ctl_freq;
1109
1110 return 0;
1111 }
1112 case VIDIOC_S_FREQUENCY:
1113 {
1114 struct v4l2_frequency *f = arg;
1115
1116 if (0 != f->tuner)
1117 return -EINVAL;
1118
1119 if (V4L2_TUNER_ANALOG_TV != f->type)
1120 return -EINVAL;
1121
1122 down(&dev->lock);
1123 dev->ctl_freq = f->frequency;
1124 em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f);
1125 up(&dev->lock);
1126 return 0;
1127 }
1128
1129 case VIDIOC_CROPCAP:
1130 {
1131 struct v4l2_cropcap *cc = arg;
1132
1133 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1134 return -EINVAL;
1135 cc->bounds.left = 0;
1136 cc->bounds.top = 0;
1137 cc->bounds.width = dev->width;
1138 cc->bounds.height = dev->height;
1139 cc->defrect = cc->bounds;
1140 cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1141 cc->pixelaspect.denominator = 59;
1142 return 0;
1143 }
1144 case VIDIOC_STREAMON:
1145 {
1146 int *type = arg;
1147
1148 if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
1149 || dev->io != IO_MMAP)
1150 return -EINVAL;
1151
1152 if (list_empty(&dev->inqueue))
1153 return -EINVAL;
1154
1155 dev->stream = STREAM_ON; /* FIXME: Start video capture here? */
1156
1157 em28xx_videodbg("VIDIOC_STREAMON: starting stream\n");
1158
1159 return 0;
1160 }
1161 case VIDIOC_STREAMOFF:
1162 {
1163 int *type = arg;
1164 int ret;
1165
1166 if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
1167 || dev->io != IO_MMAP)
1168 return -EINVAL;
1169
1170 if (dev->stream == STREAM_ON) {
1171 em28xx_videodbg ("VIDIOC_STREAMOFF: interrupting stream\n");
1172 if ((ret = em28xx_stream_interrupt(dev)))
1173 return ret;
1174 }
1175 em28xx_empty_framequeues(dev);
1176
1177 return 0;
1178 }
1179 default:
1180 return v4l_compat_translate_ioctl(inode, filp, cmd, arg,
1181 driver_ioctl);
1182 }
1183 return 0;
1184}
1185
1186/*
1187 * em28xx_v4l2_do_ioctl()
1188 * This function is _not_ called directly, but from
1189 * em28xx_v4l2_ioctl. Userspace
1190 * copying is done already, arg is a kernel pointer.
1191 */
1192static int em28xx_video_do_ioctl(struct inode *inode, struct file *filp,
1193 unsigned int cmd, void *arg)
1194{
1195 struct em28xx *dev = filp->private_data;
1196
1197 if (!dev)
1198 return -ENODEV;
1199
1200 if (video_debug > 1)
1201 em28xx_print_ioctl(dev->name,cmd);
1202
1203 switch (cmd) {
1204
1205 /* --- capabilities ------------------------------------------ */
1206 case VIDIOC_QUERYCAP:
1207 {
1208 struct v4l2_capability *cap = arg;
1209
1210 memset(cap, 0, sizeof(*cap));
1211 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1212 strlcpy(cap->card, em28xx_boards[dev->model].name,
1213 sizeof(cap->card));
1214 strlcpy(cap->bus_info, dev->udev->dev.bus_id,
1215 sizeof(cap->bus_info));
1216 cap->version = EM28XX_VERSION_CODE;
1217 cap->capabilities =
1218 V4L2_CAP_VIDEO_CAPTURE |
1219 V4L2_CAP_AUDIO |
1220 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1221 if (dev->has_tuner)
1222 cap->capabilities |= V4L2_CAP_TUNER;
1223 return 0;
1224 }
1225
1226 /* --- capture ioctls ---------------------------------------- */
1227 case VIDIOC_ENUM_FMT:
1228 {
1229 struct v4l2_fmtdesc *fmtd = arg;
1230
1231 if (fmtd->index != 0)
1232 return -EINVAL;
1233 memset(fmtd, 0, sizeof(*fmtd));
1234 fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1235 strcpy(fmtd->description, "Packed YUY2");
1236 fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
1237 memset(fmtd->reserved, 0, sizeof(fmtd->reserved));
1238 return 0;
1239 }
1240
1241 case VIDIOC_G_FMT:
1242 {
1243 struct v4l2_format *format = arg;
1244
1245 em28xx_videodbg("VIDIOC_G_FMT: type=%s\n",
1246 format->type ==
1247 V4L2_BUF_TYPE_VIDEO_CAPTURE ?
1248 "V4L2_BUF_TYPE_VIDEO_CAPTURE" : format->type ==
1249 V4L2_BUF_TYPE_VBI_CAPTURE ?
1250 "V4L2_BUF_TYPE_VBI_CAPTURE " :
1251 "not supported");
1252
1253 if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1254 return -EINVAL;
1255
1256 format->fmt.pix.width = dev->width;
1257 format->fmt.pix.height = dev->height;
1258 format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
1259 format->fmt.pix.bytesperline = dev->bytesperline;
1260 format->fmt.pix.sizeimage = dev->frame_size;
1261 format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1262 format->fmt.pix.field = dev->interlaced ? V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
1263
1264 em28xx_videodbg("VIDIOC_G_FMT: %dx%d\n", dev->width,
1265 dev->height);
1266 return 0;
1267 }
1268
1269 case VIDIOC_TRY_FMT:
1270 case VIDIOC_S_FMT:
1271 {
1272 struct v4l2_format *format = arg;
1273 u32 i;
1274 int ret = 0;
1275 int width = format->fmt.pix.width;
1276 int height = format->fmt.pix.height;
1277 unsigned int hscale, vscale;
1278 unsigned int maxh, maxw;
1279
1280 maxw = norm_maxw(dev);
1281 maxh = norm_maxh(dev);
1282
1283/* int both_fields; */
1284
1285 em28xx_videodbg("%s: type=%s\n",
1286 cmd ==
1287 VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" :
1288 "VIDIOC_S_FMT",
1289 format->type ==
1290 V4L2_BUF_TYPE_VIDEO_CAPTURE ?
1291 "V4L2_BUF_TYPE_VIDEO_CAPTURE" : format->type ==
1292 V4L2_BUF_TYPE_VBI_CAPTURE ?
1293 "V4L2_BUF_TYPE_VBI_CAPTURE " :
1294 "not supported");
1295
1296 if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1297 return -EINVAL;
1298
1299 em28xx_videodbg("%s: requested %dx%d\n",
1300 cmd ==
1301 VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" :
1302 "VIDIOC_S_FMT", format->fmt.pix.width,
1303 format->fmt.pix.height);
1304
1305 /* FIXME: Move some code away from here */
1306 /* width must even because of the YUYV format */
1307 /* height must be even because of interlacing */
1308 height &= 0xfffe;
1309 width &= 0xfffe;
1310
1311 if (height < 32)
1312 height = 32;
1313 if (height > maxh)
1314 height = maxh;
1315 if (width < 48)
1316 width = 48;
1317 if (width > maxw)
1318 width = maxw;
1319
1320 if(dev->is_em2800){
1321 /* the em2800 can only scale down to 50% */
1322 if(height % (maxh / 2))
1323 height=maxh;
1324 if(width % (maxw / 2))
1325 width=maxw;
1326 /* according to empiatech support */
1327 /* the MaxPacketSize is to small to support */
1328 /* framesizes larger than 640x480 @ 30 fps */
1329 /* or 640x576 @ 25 fps. As this would cut */
1330 /* of a part of the image we prefer */
1331 /* 360x576 or 360x480 for now */
1332 if(width == maxw && height == maxh)
1333 width /= 2;
1334 }
1335
1336 if ((hscale =
1337 (((unsigned long)maxw) << 12) / width - 4096L) >=
1338 0x4000)
1339 hscale = 0x3fff;
1340 width =
1341 (((unsigned long)maxw) << 12) / (hscale + 4096L);
1342
1343 if ((vscale =
1344 (((unsigned long)maxh) << 12) / height - 4096L) >=
1345 0x4000)
1346 vscale = 0x3fff;
1347 height =
1348 (((unsigned long)maxh) << 12) / (vscale + 4096L);
1349
1350 format->fmt.pix.width = width;
1351 format->fmt.pix.height = height;
1352 format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
1353 format->fmt.pix.bytesperline = width * 2;
1354 format->fmt.pix.sizeimage = width * 2 * height;
1355 format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1356 format->fmt.pix.field = V4L2_FIELD_INTERLACED;
1357
1358 em28xx_videodbg("%s: returned %dx%d (%d, %d)\n",
1359 cmd ==
1360 VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" :
1361 "VIDIOC_S_FMT", format->fmt.pix.width,
1362 format->fmt.pix.height, hscale, vscale);
1363
1364 if (cmd == VIDIOC_TRY_FMT)
1365 return 0;
1366
1367 for (i = 0; i < dev->num_frames; i++)
1368 if (dev->frame[i].vma_use_count) {
1369 em28xx_videodbg("VIDIOC_S_FMT failed. "
1370 "Unmap the buffers first.\n");
1371 return -EINVAL;
1372 }
1373
1374 /* stop io in case it is already in progress */
1375 if (dev->stream == STREAM_ON) {
1376 em28xx_videodbg("VIDIOC_SET_FMT: interupting stream\n");
1377 if ((ret = em28xx_stream_interrupt(dev)))
1378 return ret;
1379 }
1380
1381 em28xx_release_buffers(dev);
1382 dev->io = IO_NONE;
1383
1384 /* set new image size */
1385 dev->width = width;
1386 dev->height = height;
1387 dev->frame_size = dev->width * dev->height * 2;
1388 dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
1389 dev->bytesperline = dev->width * 2;
1390 dev->hscale = hscale;
1391 dev->vscale = vscale;
1392/* dev->both_fileds = both_fileds; */
1393 em28xx_uninit_isoc(dev);
1394 em28xx_set_alternate(dev);
1395 em28xx_capture_start(dev, 1);
1396 em28xx_resolution_set(dev);
1397 em28xx_init_isoc(dev);
1398
1399 return 0;
1400 }
1401
1402 /* --- streaming capture ------------------------------------- */
1403 case VIDIOC_REQBUFS:
1404 {
1405 struct v4l2_requestbuffers *rb = arg;
1406 u32 i;
1407 int ret;
1408
1409 if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1410 rb->memory != V4L2_MEMORY_MMAP)
1411 return -EINVAL;
1412
1413 if (dev->io == IO_READ) {
1414 em28xx_videodbg ("method is set to read;"
1415 " close and open the device again to"
1416 " choose the mmap I/O method\n");
1417 return -EINVAL;
1418 }
1419
1420 for (i = 0; i < dev->num_frames; i++)
1421 if (dev->frame[i].vma_use_count) {
1422 em28xx_videodbg ("VIDIOC_REQBUFS failed; previous buffers are still mapped\n");
1423 return -EINVAL;
1424 }
1425
1426 if (dev->stream == STREAM_ON) {
1427 em28xx_videodbg("VIDIOC_REQBUFS: interrupting stream\n");
1428 if ((ret = em28xx_stream_interrupt(dev)))
1429 return ret;
1430 }
1431
1432 em28xx_empty_framequeues(dev);
1433
1434 em28xx_release_buffers(dev);
1435 if (rb->count)
1436 rb->count =
1437 em28xx_request_buffers(dev, rb->count);
1438
1439 dev->frame_current = NULL;
1440
1441 em28xx_videodbg ("VIDIOC_REQBUFS: setting io method to mmap: num bufs %i\n",
1442 rb->count);
1443 dev->io = rb->count ? IO_MMAP : IO_NONE;
1444 return 0;
1445 }
1446
1447 case VIDIOC_QUERYBUF:
1448 {
1449 struct v4l2_buffer *b = arg;
1450
1451 if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1452 b->index >= dev->num_frames || dev->io != IO_MMAP)
1453 return -EINVAL;
1454
1455 memcpy(b, &dev->frame[b->index].buf, sizeof(*b));
1456
1457 if (dev->frame[b->index].vma_use_count) {
1458 b->flags |= V4L2_BUF_FLAG_MAPPED;
1459 }
1460 if (dev->frame[b->index].state == F_DONE)
1461 b->flags |= V4L2_BUF_FLAG_DONE;
1462 else if (dev->frame[b->index].state != F_UNUSED)
1463 b->flags |= V4L2_BUF_FLAG_QUEUED;
1464 return 0;
1465 }
1466 case VIDIOC_QBUF:
1467 {
1468 struct v4l2_buffer *b = arg;
1469 unsigned long lock_flags;
1470
1471 if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1472 b->index >= dev->num_frames || dev->io != IO_MMAP) {
1473 return -EINVAL;
1474 }
1475
1476 if (dev->frame[b->index].state != F_UNUSED) {
1477 return -EAGAIN;
1478 }
1479 dev->frame[b->index].state = F_QUEUED;
1480
1481 /* add frame to fifo */
1482 spin_lock_irqsave(&dev->queue_lock, lock_flags);
1483 list_add_tail(&dev->frame[b->index].frame,
1484 &dev->inqueue);
1485 spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
1486
1487 return 0;
1488 }
1489 case VIDIOC_DQBUF:
1490 {
1491 struct v4l2_buffer *b = arg;
1492 struct em28xx_frame_t *f;
1493 unsigned long lock_flags;
1494 int ret = 0;
1495
1496 if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE
1497 || dev->io != IO_MMAP)
1498 return -EINVAL;
1499
1500 if (list_empty(&dev->outqueue)) {
1501 if (dev->stream == STREAM_OFF)
1502 return -EINVAL;
1503 if (filp->f_flags & O_NONBLOCK)
1504 return -EAGAIN;
1505 ret = wait_event_interruptible
1506 (dev->wait_frame,
1507 (!list_empty(&dev->outqueue)) ||
1508 (dev->state & DEV_DISCONNECTED));
1509 if (ret)
1510 return ret;
1511 if (dev->state & DEV_DISCONNECTED)
1512 return -ENODEV;
1513 }
1514
1515 spin_lock_irqsave(&dev->queue_lock, lock_flags);
1516 f = list_entry(dev->outqueue.next,
1517 struct em28xx_frame_t, frame);
1518 list_del(dev->outqueue.next);
1519 spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
1520
1521 f->state = F_UNUSED;
1522 memcpy(b, &f->buf, sizeof(*b));
1523
1524 if (f->vma_use_count)
1525 b->flags |= V4L2_BUF_FLAG_MAPPED;
1526
1527 return 0;
1528 }
1529 default:
1530 return em28xx_do_ioctl(inode, filp, dev, cmd, arg,
1531 em28xx_video_do_ioctl);
1532 }
1533 return 0;
1534}
1535
1536/*
1537 * em28xx_v4l2_ioctl()
1538 * handle v4l2 ioctl the main action happens in em28xx_v4l2_do_ioctl()
1539 */
1540static int em28xx_v4l2_ioctl(struct inode *inode, struct file *filp,
1541 unsigned int cmd, unsigned long arg)
1542{
1543 int ret = 0;
1544 struct em28xx *dev = filp->private_data;
1545
1546 if (down_interruptible(&dev->fileop_lock))
1547 return -ERESTARTSYS;
1548
1549 if (dev->state & DEV_DISCONNECTED) {
1550 em28xx_errdev("v4l2 ioctl: device not present\n");
1551 up(&dev->fileop_lock);
1552 return -ENODEV;
1553 }
1554
1555 if (dev->state & DEV_MISCONFIGURED) {
1556 em28xx_errdev
1557 ("v4l2 ioctl: device is misconfigured; close and open it again\n");
1558 up(&dev->fileop_lock);
1559 return -EIO;
1560 }
1561
1562 ret = video_usercopy(inode, filp, cmd, arg, em28xx_video_do_ioctl);
1563
1564 up(&dev->fileop_lock);
1565
1566 return ret;
1567}
1568
1569static struct file_operations em28xx_v4l_fops = {
1570 .owner = THIS_MODULE,
1571 .open = em28xx_v4l2_open,
1572 .release = em28xx_v4l2_close,
1573 .ioctl = em28xx_v4l2_ioctl,
1574 .read = em28xx_v4l2_read,
1575 .poll = em28xx_v4l2_poll,
1576 .mmap = em28xx_v4l2_mmap,
1577 .llseek = no_llseek,
1578};
1579
1580/******************************** usb interface *****************************************/
1581
1582/*
1583 * em28xx_init_dev()
1584 * allocates and inits the device structs, registers i2c bus and v4l device
1585 */
1586static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
1587 int minor, int model)
1588{
1589 struct em28xx *dev = *devhandle;
1590 int retval = -ENOMEM;
1591 int errCode, i;
1592 unsigned int maxh, maxw;
1593
1594 dev->udev = udev;
1595 dev->model = model;
1596 init_MUTEX(&dev->lock);
1597 init_waitqueue_head(&dev->open);
1598
1599 dev->em28xx_write_regs = em28xx_write_regs;
1600 dev->em28xx_read_reg = em28xx_read_reg;
1601 dev->em28xx_read_reg_req_len = em28xx_read_reg_req_len;
1602 dev->em28xx_write_regs_req = em28xx_write_regs_req;
1603 dev->em28xx_read_reg_req = em28xx_read_reg_req;
1604 dev->is_em2800 = em28xx_boards[model].is_em2800;
1605 dev->has_tuner = em28xx_boards[model].has_tuner;
1606 dev->has_msp34xx = em28xx_boards[model].has_msp34xx;
1607 dev->tda9887_conf = em28xx_boards[model].tda9887_conf;
1608 dev->decoder = em28xx_boards[model].decoder;
1609
1610 if (tuner >= 0)
1611 dev->tuner_type = tuner;
1612 else
1613 dev->tuner_type = em28xx_boards[model].tuner_type;
1614
1615 dev->video_inputs = em28xx_boards[model].vchannels;
1616
1617 for (i = 0; i < TVNORMS; i++)
1618 if (em28xx_boards[model].norm == tvnorms[i].mode)
1619 break;
1620 if (i == TVNORMS)
1621 i = 0;
1622
1623 dev->tvnorm = &tvnorms[i]; /* set default norm */
1624
1625 em28xx_videodbg("tvnorm=%s\n", dev->tvnorm->name);
1626
1627 maxw = norm_maxw(dev);
1628 maxh = norm_maxh(dev);
1629
1630 /* set default image size */
1631 dev->width = maxw;
1632 dev->height = maxh;
1633 dev->interlaced = EM28XX_INTERLACED_DEFAULT;
1634 dev->field_size = dev->width * dev->height;
1635 dev->frame_size =
1636 dev->interlaced ? dev->field_size << 1 : dev->field_size;
1637 dev->bytesperline = dev->width * 2;
1638 dev->hscale = 0;
1639 dev->vscale = 0;
1640 dev->ctl_input = 2;
1641
1642 /* setup video picture settings for saa7113h */
1643 memset(&dev->vpic, 0, sizeof(dev->vpic));
1644 dev->vpic.colour = 128 << 8;
1645 dev->vpic.hue = 128 << 8;
1646 dev->vpic.brightness = 128 << 8;
1647 dev->vpic.contrast = 192 << 8;
1648 dev->vpic.whiteness = 128 << 8; /* This one isn't used */
1649 dev->vpic.depth = 16;
1650 dev->vpic.palette = VIDEO_PALETTE_YUV422;
1651
1652#ifdef CONFIG_MODULES
1653 /* request some modules */
1654 if (dev->decoder == EM28XX_SAA7113 || dev->decoder == EM28XX_SAA7114)
1655 request_module("saa711x");
1656 if (dev->decoder == EM28XX_TVP5150)
1657 request_module("tvp5150");
1658 if (dev->has_tuner)
1659 request_module("tuner");
1660 if (dev->tda9887_conf)
1661 request_module("tda9887");
1662#endif
1663 errCode = em28xx_config(dev);
1664 if (errCode) {
1665 em28xx_errdev("error configuring device\n");
1666 kfree(dev);
1667 return -ENOMEM;
1668 }
1669
1670 down(&dev->lock);
1671 /* register i2c bus */
1672 em28xx_i2c_register(dev);
1673
1674 /* Do board specific init and eeprom reading */
1675 em28xx_card_setup(dev);
1676
1677 /* configure the device */
1678 em28xx_config_i2c(dev);
1679
1680 up(&dev->lock);
1681
1682 errCode = em28xx_config(dev);
1683
1684#ifdef CONFIG_MODULES
1685 if (dev->has_msp34xx)
1686 request_module("msp3400");
1687#endif
1688 /* allocate and fill v4l2 device struct */
1689 dev->vdev = video_device_alloc();
1690 if (NULL == dev->vdev) {
1691 em28xx_errdev("cannot allocate video_device.\n");
1692 kfree(dev);
1693 return -ENOMEM;
1694 }
1695
1696 dev->vdev->type = VID_TYPE_CAPTURE;
1697 if (dev->has_tuner)
1698 dev->vdev->type |= VID_TYPE_TUNER;
1699 dev->vdev->hardware = 0;
1700 dev->vdev->fops = &em28xx_v4l_fops;
1701 dev->vdev->minor = -1;
1702 dev->vdev->dev = &dev->udev->dev;
1703 dev->vdev->release = video_device_release;
1704 snprintf(dev->vdev->name, sizeof(dev->vdev->name), "%s",
1705 "em28xx video");
1706 list_add_tail(&dev->devlist,&em28xx_devlist);
1707
1708 /* register v4l2 device */
1709 down(&dev->lock);
1710 if ((retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, -1))) {
1711 em28xx_errdev("unable to register video device (error=%i).\n",
1712 retval);
1713 up(&dev->lock);
1714 list_del(&dev->devlist);
1715 video_device_release(dev->vdev);
1716 kfree(dev);
1717 return -ENODEV;
1718 }
1719 if (dev->has_msp34xx) {
1720 /* Send a reset to other chips via gpio */
1721 em28xx_write_regs_req(dev, 0x00, 0x08, "\xf7", 1);
1722 udelay(2500);
1723 em28xx_write_regs_req(dev, 0x00, 0x08, "\xff", 1);
1724 udelay(2500);
1725
1726 }
1727 video_mux(dev, 0);
1728
1729 up(&dev->lock);
1730
1731 em28xx_info("V4L2 device registered as /dev/video%d\n",
1732 dev->vdev->minor);
1733
1734 return 0;
1735}
1736
1737/*
1738 * em28xx_usb_probe()
1739 * checks for supported devices
1740 */
1741static int em28xx_usb_probe(struct usb_interface *interface,
1742 const struct usb_device_id *id)
1743{
1744 const struct usb_endpoint_descriptor *endpoint;
1745 struct usb_device *udev;
1746 struct usb_interface *uif;
1747 struct em28xx *dev = NULL;
1748 int retval = -ENODEV;
1749 int model,i,nr,ifnum;
1750
1751 udev = usb_get_dev(interface_to_usbdev(interface));
1752 ifnum = interface->altsetting[0].desc.bInterfaceNumber;
1753
1754
1755 /* Don't register audio interfaces */
1756 if (interface->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) {
1757 em28xx_err(DRIVER_NAME " audio device (%04x:%04x): interface %i, class %i\n",
1758 udev->descriptor.idVendor,udev->descriptor.idProduct,
1759 ifnum,
1760 interface->altsetting[0].desc.bInterfaceClass);
1761 return -ENODEV;
1762 }
1763
1764 em28xx_err(DRIVER_NAME " new video device (%04x:%04x): interface %i, class %i\n",
1765 udev->descriptor.idVendor,udev->descriptor.idProduct,
1766 ifnum,
1767 interface->altsetting[0].desc.bInterfaceClass);
1768
1769 endpoint = &interface->cur_altsetting->endpoint[1].desc;
1770
1771 /* check if the the device has the iso in endpoint at the correct place */
1772 if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
1773 USB_ENDPOINT_XFER_ISOC) {
1774 em28xx_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n");
1775 return -ENODEV;
1776 }
1777 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
1778 em28xx_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n");
1779 return -ENODEV;
1780 }
1781
1782 model=id->driver_info;
1783 nr=interface->minor;
1784
1785 if (nr>EM28XX_MAXBOARDS) {
1786 printk (DRIVER_NAME ": Supports only %i em28xx boards.\n",EM28XX_MAXBOARDS);
1787 return -ENOMEM;
1788 }
1789
1790 /* allocate memory for our device state and initialize it */
1791 dev = kmalloc(sizeof(*dev), GFP_KERNEL);
1792 if (dev == NULL) {
1793 em28xx_err(DRIVER_NAME ": out of memory!\n");
1794 return -ENOMEM;
1795 }
1796 memset(dev, 0, sizeof(*dev));
1797
1798 /* compute alternate max packet sizes */
1799 uif = udev->actconfig->interface[0];
1800
1801 dev->num_alt=uif->num_altsetting;
1802 printk(DRIVER_NAME ": Alternate settings: %i\n",dev->num_alt);
1803// dev->alt_max_pkt_size = kmalloc(sizeof(*dev->alt_max_pkt_size)*
1804 dev->alt_max_pkt_size = kmalloc(32*
1805 dev->num_alt,GFP_KERNEL);
1806 if (dev->alt_max_pkt_size == NULL) {
1807 em28xx_err(DRIVER_NAME ": out of memory!\n");
1808 return -ENOMEM;
1809 }
1810
1811 for (i = 0; i < dev->num_alt ; i++) {
1812 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1813 wMaxPacketSize);
1814 dev->alt_max_pkt_size[i] =
1815 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1816 printk(DRIVER_NAME ": Alternate setting %i, max size= %i\n",i,
1817 dev->alt_max_pkt_size[i]);
1818 }
1819
1820 snprintf(dev->name, 29, "em28xx #%d", nr);
1821
1822 if ((card[nr]>=0)&&(card[nr]<em28xx_bcount))
1823 model=card[nr];
1824
1825 if ((model==EM2800_BOARD_UNKNOWN)||(model==EM2820_BOARD_UNKNOWN)) {
1826 printk( "%s: Your board has no eeprom inside it and thus can't\n"
1827 "%s: be autodetected. Please pass card=<n> insmod option to\n"
1828 "%s: workaround that. Redirect complaints to the vendor of\n"
1829 "%s: the TV card. Best regards,\n"
1830 "%s: -- tux\n",
1831 dev->name,dev->name,dev->name,dev->name,dev->name);
1832 printk("%s: Here is a list of valid choices for the card=<n> insmod option:\n",
1833 dev->name);
1834 for (i = 0; i < em28xx_bcount; i++) {
1835 printk("%s: card=%d -> %s\n",
1836 dev->name, i, em28xx_boards[i].name);
1837 }
1838 }
1839
1840 /* allocate device struct */
1841 retval = em28xx_init_dev(&dev, udev, nr, model);
1842 if (retval)
1843 return retval;
1844
1845 em28xx_info("Found %s\n", em28xx_boards[model].name);
1846
1847 /* save our data pointer in this interface device */
1848 usb_set_intfdata(interface, dev);
1849 return 0;
1850}
1851
1852/*
1853 * em28xx_usb_disconnect()
1854 * called when the device gets diconencted
1855 * video device will be unregistered on v4l2_close in case it is still open
1856 */
1857static void em28xx_usb_disconnect(struct usb_interface *interface)
1858{
1859 struct em28xx *dev = usb_get_intfdata(interface);
1860 usb_set_intfdata(interface, NULL);
1861
1862 if (!dev)
1863 return;
1864
1865 down_write(&em28xx_disconnect);
1866
1867 down(&dev->lock);
1868
1869 em28xx_info("disconnecting %s\n", dev->vdev->name);
1870
1871 wake_up_interruptible_all(&dev->open);
1872
1873 if (dev->users) {
1874 em28xx_warn
1875 ("device /dev/video%d is open! Deregistration and memory "
1876 "deallocation are deferred on close.\n", dev->vdev->minor);
1877 dev->state |= DEV_MISCONFIGURED;
1878 em28xx_uninit_isoc(dev);
1879 dev->state |= DEV_DISCONNECTED;
1880 wake_up_interruptible(&dev->wait_frame);
1881 wake_up_interruptible(&dev->wait_stream);
1882 } else {
1883 dev->state |= DEV_DISCONNECTED;
1884 em28xx_release_resources(dev);
1885 }
1886
1887 up(&dev->lock);
1888
1889 if (!dev->users) {
1890 kfree(dev->alt_max_pkt_size);
1891 kfree(dev);
1892 }
1893
1894 up_write(&em28xx_disconnect);
1895}
1896
1897static struct usb_driver em28xx_usb_driver = {
1898 .owner = THIS_MODULE,
1899 .name = "em28xx",
1900 .probe = em28xx_usb_probe,
1901 .disconnect = em28xx_usb_disconnect,
1902 .id_table = em28xx_id_table,
1903};
1904
1905static int __init em28xx_module_init(void)
1906{
1907 int result;
1908
1909 printk(KERN_INFO DRIVER_NAME " v4l2 driver version %d.%d.%d loaded\n",
1910 (EM28XX_VERSION_CODE >> 16) & 0xff,
1911 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
1912#ifdef SNAPSHOT
1913 printk(KERN_INFO DRIVER_NAME " snapshot date %04d-%02d-%02d\n",
1914 SNAPSHOT / 10000, (SNAPSHOT / 100) % 100, SNAPSHOT % 100);
1915#endif
1916
1917 /* register this driver with the USB subsystem */
1918 result = usb_register(&em28xx_usb_driver);
1919 if (result)
1920 em28xx_err(DRIVER_NAME
1921 " usb_register failed. Error number %d.\n", result);
1922
1923 return result;
1924}
1925
1926static void __exit em28xx_module_exit(void)
1927{
1928 /* deregister this driver with the USB subsystem */
1929 usb_deregister(&em28xx_usb_driver);
1930}
1931
1932module_init(em28xx_module_init);
1933module_exit(em28xx_module_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-09 07:05:59 -0500