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[media] feature-removal: update V4L1 removal status
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / stk-webcam.c
CommitLineData
ec16dae5
JVJ		 1/*
2 * stk-webcam.c : Driver for Syntek 1125 USB webcam controller
3 *
4 * Copyright (C) 2006 Nicolas VIVIEN
5 * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com>
6 *
7 * Some parts are inspired from cafe_ccic.c
8 * Copyright 2006-2007 Jonathan Corbet
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 */
24
25#include <linux/module.h>
26#include <linux/init.h>
27#include <linux/kernel.h>
28#include <linux/errno.h>
29#include <linux/slab.h>
ec16dae5
JVJ		 30
31#include <linux/usb.h>
ef69c8e8 32#include <linux/mm.h>
387d4477 33#include <linux/vmalloc.h>
ec16dae5
JVJ		 34#include <linux/videodev2.h>
35#include <media/v4l2-common.h>
35ea11ff 36#include <media/v4l2-ioctl.h>
ec16dae5
JVJ		 37
38#include "stk-webcam.h"
39
40
41static int hflip = 1;
42module_param(hflip, bool, 0444);
43MODULE_PARM_DESC(hflip, "Horizontal image flip (mirror). Defaults to 1");
44
45static int vflip = 1;
46module_param(vflip, bool, 0444);
47MODULE_PARM_DESC(vflip, "Vertical image flip. Defaults to 1");
48
49static int debug;
50module_param(debug, int, 0444);
51MODULE_PARM_DESC(debug, "Debug v4l ioctls. Defaults to 0");
52
53MODULE_LICENSE("GPL");
54MODULE_AUTHOR("Jaime Velasco Juan <jsagarribay@gmail.com> and Nicolas VIVIEN");
55MODULE_DESCRIPTION("Syntek DC1125 webcam driver");
56
57
58
59/* Some cameras have audio interfaces, we aren't interested in those */
60static struct usb_device_id stkwebcam_table[] = {
61 { USB_DEVICE_AND_INTERFACE_INFO(0x174f, 0xa311, 0xff, 0xff, 0xff) },
62 { USB_DEVICE_AND_INTERFACE_INFO(0x05e1, 0x0501, 0xff, 0xff, 0xff) },
63 { }
64};
65MODULE_DEVICE_TABLE(usb, stkwebcam_table);
66
ec16dae5
JVJ		 67/*
68 * Basic stuff
69 */
70int stk_camera_write_reg(struct stk_camera *dev, u16 index, u8 value)
71{
72 struct usb_device *udev = dev->udev;
73 int ret;
74
75 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
76 0x01,
77 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
78 value,
79 index,
80 NULL,
81 0,
82 500);
83 if (ret < 0)
84 return ret;
85 else
86 return 0;
87}
88
89int stk_camera_read_reg(struct stk_camera *dev, u16 index, int *value)
90{
91 struct usb_device *udev = dev->udev;
92 int ret;
93
94 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
95 0x00,
96 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
97 0x00,
98 index,
99 (u8 *) value,
100 sizeof(u8),
101 500);
102 if (ret < 0)
103 return ret;
104 else
105 return 0;
106}
107
108static int stk_start_stream(struct stk_camera *dev)
109{
110 int value;
111 int i, ret;
112 int value_116, value_117;
113
114 if (!is_present(dev))
115 return -ENODEV;
116 if (!is_memallocd(dev) || !is_initialised(dev)) {
117 STK_ERROR("FIXME: Buffers are not allocated\n");
118 return -EFAULT;
119 }
120 ret = usb_set_interface(dev->udev, 0, 5);
121
122 if (ret < 0)
123 STK_ERROR("usb_set_interface failed !\n");
124 if (stk_sensor_wakeup(dev))
125 STK_ERROR("error awaking the sensor\n");
126
127 stk_camera_read_reg(dev, 0x0116, &value_116);
128 stk_camera_read_reg(dev, 0x0117, &value_117);
129
130 stk_camera_write_reg(dev, 0x0116, 0x0000);
131 stk_camera_write_reg(dev, 0x0117, 0x0000);
132
133 stk_camera_read_reg(dev, 0x0100, &value);
134 stk_camera_write_reg(dev, 0x0100, value | 0x80);
135
136 stk_camera_write_reg(dev, 0x0116, value_116);
137 stk_camera_write_reg(dev, 0x0117, value_117);
138 for (i = 0; i < MAX_ISO_BUFS; i++) {
139 if (dev->isobufs[i].urb) {
140 ret = usb_submit_urb(dev->isobufs[i].urb, GFP_KERNEL);
141 atomic_inc(&dev->urbs_used);
142 if (ret)
143 return ret;
144 }
145 }
146 set_streaming(dev);
147 return 0;
148}
149
150static int stk_stop_stream(struct stk_camera *dev)
151{
152 int value;
153 int i;
154 if (is_present(dev)) {
155 stk_camera_read_reg(dev, 0x0100, &value);
156 stk_camera_write_reg(dev, 0x0100, value & ~0x80);
157 if (dev->isobufs != NULL) {
158 for (i = 0; i < MAX_ISO_BUFS; i++) {
159 if (dev->isobufs[i].urb)
160 usb_kill_urb(dev->isobufs[i].urb);
161 }
162 }
163 unset_streaming(dev);
164
165 if (usb_set_interface(dev->udev, 0, 0))
166 STK_ERROR("usb_set_interface failed !\n");
167 if (stk_sensor_sleep(dev))
168 STK_ERROR("error suspending the sensor\n");
169 }
170 return 0;
171}
172
173/*
174 * This seems to be the shortest init sequence we
175 * must do in order to find the sensor
176 * Bit 5 of reg. 0x0000 here is important, when reset to 0 the sensor
177 * is also reset. Maybe powers down it?
178 * Rest of values don't make a difference
179 */
180
181static struct regval stk1125_initvals[] = {
182 /*TODO: What means this sequence? */
183 {0x0000, 0x24},
184 {0x0100, 0x21},
185 {0x0002, 0x68},
186 {0x0003, 0x80},
187 {0x0005, 0x00},
188 {0x0007, 0x03},
189 {0x000d, 0x00},
190 {0x000f, 0x02},
191 {0x0300, 0x12},
192 {0x0350, 0x41},
193 {0x0351, 0x00},
194 {0x0352, 0x00},
195 {0x0353, 0x00},
196 {0x0018, 0x10},
197 {0x0019, 0x00},
198 {0x001b, 0x0e},
199 {0x001c, 0x46},
200 {0x0300, 0x80},
201 {0x001a, 0x04},
202 {0x0110, 0x00},
203 {0x0111, 0x00},
204 {0x0112, 0x00},
205 {0x0113, 0x00},
206
207 {0xffff, 0xff},
208};
209
210
211static int stk_initialise(struct stk_camera *dev)
212{
213 struct regval *rv;
214 int ret;
215 if (!is_present(dev))
216 return -ENODEV;
217 if (is_initialised(dev))
218 return 0;
219 rv = stk1125_initvals;
220 while (rv->reg != 0xffff) {
221 ret = stk_camera_write_reg(dev, rv->reg, rv->val);
222 if (ret)
223 return ret;
224 rv++;
225 }
226 if (stk_sensor_init(dev) == 0) {
227 set_initialised(dev);
228 return 0;
229 } else
230 return -1;
231}
232
ef69c8e8
MCC		 233#ifdef CONFIG_VIDEO_V4L1_COMPAT
234
ec16dae5
JVJ		 235/* sysfs functions */
236/*FIXME cleanup this */
237
238static ssize_t show_brightness(struct device *class,
239 struct device_attribute *attr, char *buf)
240{
241 struct video_device *vdev = to_video_device(class);
242 struct stk_camera *dev = vdev_to_camera(vdev);
243
244 return sprintf(buf, "%X\n", dev->vsettings.brightness);
245}
246
247static ssize_t store_brightness(struct device *class,
248 struct device_attribute *attr, const char *buf, size_t count)
249{
250 char *endp;
251 unsigned long value;
252 int ret;
253
254 struct video_device *vdev = to_video_device(class);
255 struct stk_camera *dev = vdev_to_camera(vdev);
256
257 value = simple_strtoul(buf, &endp, 16);
258
259 dev->vsettings.brightness = (int) value;
260
261 ret = stk_sensor_set_brightness(dev, value >> 8);
262 if (ret)
263 return ret;
264 else
265 return count;
266}
267
268static ssize_t show_hflip(struct device *class,
269 struct device_attribute *attr, char *buf)
270{
271 struct video_device *vdev = to_video_device(class);
272 struct stk_camera *dev = vdev_to_camera(vdev);
273
274 return sprintf(buf, "%d\n", dev->vsettings.hflip);
275}
276
277static ssize_t store_hflip(struct device *class,
278 struct device_attribute *attr, const char *buf, size_t count)
279{
280 struct video_device *vdev = to_video_device(class);
281 struct stk_camera *dev = vdev_to_camera(vdev);
282
283 if (strncmp(buf, "1", 1) == 0)
284 dev->vsettings.hflip = 1;
285 else if (strncmp(buf, "0", 1) == 0)
286 dev->vsettings.hflip = 0;
287 else
288 return -EINVAL;
289
290 return strlen(buf);
291}
292
293static ssize_t show_vflip(struct device *class,
294 struct device_attribute *attr, char *buf)
295{
296 struct video_device *vdev = to_video_device(class);
297 struct stk_camera *dev = vdev_to_camera(vdev);
298
299 return sprintf(buf, "%d\n", dev->vsettings.vflip);
300}
301
302static ssize_t store_vflip(struct device *class,
303 struct device_attribute *attr, const char *buf, size_t count)
304{
305 struct video_device *vdev = to_video_device(class);
306 struct stk_camera *dev = vdev_to_camera(vdev);
307
308 if (strncmp(buf, "1", 1) == 0)
309 dev->vsettings.vflip = 1;
310 else if (strncmp(buf, "0", 1) == 0)
311 dev->vsettings.vflip = 0;
312 else
313 return -EINVAL;
314
315 return strlen(buf);
316}
317
318static DEVICE_ATTR(brightness, S_IRUGO | S_IWUGO,
319 show_brightness, store_brightness);
320static DEVICE_ATTR(hflip, S_IRUGO | S_IWUGO, show_hflip, store_hflip);
321static DEVICE_ATTR(vflip, S_IRUGO | S_IWUGO, show_vflip, store_vflip);
322
323static int stk_create_sysfs_files(struct video_device *vdev)
324{
325 int ret;
326
f894dfd7
HV		 327 ret = device_create_file(&vdev->dev, &dev_attr_brightness);
328 ret += device_create_file(&vdev->dev, &dev_attr_hflip);
329 ret += device_create_file(&vdev->dev, &dev_attr_vflip);
330 if (ret)
331 STK_WARNING("Could not create sysfs files\n");
ec16dae5
JVJ		 332 return ret;
333}
334
335static void stk_remove_sysfs_files(struct video_device *vdev)
336{
f894dfd7
HV		 337 device_remove_file(&vdev->dev, &dev_attr_brightness);
338 device_remove_file(&vdev->dev, &dev_attr_hflip);
339 device_remove_file(&vdev->dev, &dev_attr_vflip);
ec16dae5
JVJ		 340}
341
ef69c8e8
MCC		 342#else
343#define stk_create_sysfs_files(a)
344#define stk_remove_sysfs_files(a)
345#endif
ec16dae5
JVJ		 346
347/* *********************************************** */
348/*
349 * This function is called as an URB transfert is complete (Isochronous pipe).
350 * So, the traitement is done in interrupt time, so it has be fast, not crash,
351 * and not stall. Neat.
352 */
353static void stk_isoc_handler(struct urb *urb)
354{
355 int i;
356 int ret;
357 int framelen;
358 unsigned long flags;
359
360 unsigned char *fill = NULL;
361 unsigned char *iso_buf = NULL;
362
363 struct stk_camera *dev;
364 struct stk_sio_buffer *fb;
365
366 dev = (struct stk_camera *) urb->context;
367
368 if (dev == NULL) {
369 STK_ERROR("isoc_handler called with NULL device !\n");
370 return;
371 }
372
373 if (urb->status == -ENOENT || urb->status == -ECONNRESET
374 || urb->status == -ESHUTDOWN) {
375 atomic_dec(&dev->urbs_used);
376 return;
377 }
378
379 spin_lock_irqsave(&dev->spinlock, flags);
380
381 if (urb->status != -EINPROGRESS && urb->status != 0) {
382 STK_ERROR("isoc_handler: urb->status == %d\n", urb->status);
383 goto resubmit;
384 }
385
386 if (list_empty(&dev->sio_avail)) {
387 /*FIXME Stop streaming after a while */
388 (void) (printk_ratelimit() &&
389 STK_ERROR("isoc_handler without available buffer!\n"));
390 goto resubmit;
391 }
392 fb = list_first_entry(&dev->sio_avail,
393 struct stk_sio_buffer, list);
394 fill = fb->buffer + fb->v4lbuf.bytesused;
395
396 for (i = 0; i < urb->number_of_packets; i++) {
397 if (urb->iso_frame_desc[i].status != 0) {
398 if (urb->iso_frame_desc[i].status != -EXDEV)
399 STK_ERROR("Frame %d has error %d\n", i,
400 urb->iso_frame_desc[i].status);
401 continue;
402 }
403 framelen = urb->iso_frame_desc[i].actual_length;
404 iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
405
406 if (framelen <= 4)
407 continue; /* no data */
408
409 /*
410 * we found something informational from there
411 * the isoc frames have to type of headers
412 * type1: 00 xx 00 00 or 20 xx 00 00
413 * type2: 80 xx 00 00 00 00 00 00 or a0 xx 00 00 00 00 00 00
414 * xx is a sequencer which has never been seen over 0x3f
415 * imho data written down looks like bayer, i see similarities
416 * after every 640 bytes
417 */
418 if (*iso_buf & 0x80) {
419 framelen -= 8;
420 iso_buf += 8;
421 /* This marks a new frame */
422 if (fb->v4lbuf.bytesused != 0
423 && fb->v4lbuf.bytesused != dev->frame_size) {
424 (void) (printk_ratelimit() &&
425 STK_ERROR("frame %d, "
426 "bytesused=%d, skipping\n",
427 i, fb->v4lbuf.bytesused));
428 fb->v4lbuf.bytesused = 0;
429 fill = fb->buffer;
430 } else if (fb->v4lbuf.bytesused == dev->frame_size) {
b1855907
JVJ		 431 if (list_is_singular(&dev->sio_avail)) {
432 /* Always reuse the last buffer */
433 fb->v4lbuf.bytesused = 0;
434 fill = fb->buffer;
435 } else {
436 list_move_tail(dev->sio_avail.next,
437 &dev->sio_full);
438 wake_up(&dev->wait_frame);
439 fb = list_first_entry(&dev->sio_avail,
440 struct stk_sio_buffer, list);
441 fb->v4lbuf.bytesused = 0;
442 fill = fb->buffer;
ec16dae5 443 }
ec16dae5
JVJ		 444 }
445 } else {
446 framelen -= 4;
447 iso_buf += 4;
448 }
449
450 /* Our buffer is full !!! */
451 if (framelen + fb->v4lbuf.bytesused > dev->frame_size) {
452 (void) (printk_ratelimit() &&
453 STK_ERROR("Frame buffer overflow, lost sync\n"));
454 /*FIXME Do something here? */
455 continue;
456 }
457 spin_unlock_irqrestore(&dev->spinlock, flags);
458 memcpy(fill, iso_buf, framelen);
459 spin_lock_irqsave(&dev->spinlock, flags);
460 fill += framelen;
461
462 /* New size of our buffer */
463 fb->v4lbuf.bytesused += framelen;
464 }
465
466resubmit:
467 spin_unlock_irqrestore(&dev->spinlock, flags);
468 urb->dev = dev->udev;
469 ret = usb_submit_urb(urb, GFP_ATOMIC);
470 if (ret != 0) {
471 STK_ERROR("Error (%d) re-submitting urb in stk_isoc_handler.\n",
472 ret);
473 }
474}
475
476/* -------------------------------------------- */
477
478static int stk_prepare_iso(struct stk_camera *dev)
479{
480 void *kbuf;
481 int i, j;
482 struct urb *urb;
483 struct usb_device *udev;
484
485 if (dev == NULL)
486 return -ENXIO;
487 udev = dev->udev;
488
489 if (dev->isobufs)
490 STK_ERROR("isobufs already allocated. Bad\n");
491 else
492 dev->isobufs = kzalloc(MAX_ISO_BUFS * sizeof(*dev->isobufs),
493 GFP_KERNEL);
494 if (dev->isobufs == NULL) {
495 STK_ERROR("Unable to allocate iso buffers\n");
496 return -ENOMEM;
497 }
498 for (i = 0; i < MAX_ISO_BUFS; i++) {
499 if (dev->isobufs[i].data == NULL) {
500 kbuf = kzalloc(ISO_BUFFER_SIZE, GFP_KERNEL);
501 if (kbuf == NULL) {
502 STK_ERROR("Failed to allocate iso buffer %d\n",
503 i);
504 goto isobufs_out;
505 }
506 dev->isobufs[i].data = kbuf;
507 } else
508 STK_ERROR("isobuf data already allocated\n");
509 if (dev->isobufs[i].urb == NULL) {
510 urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
511 if (urb == NULL) {
512 STK_ERROR("Failed to allocate URB %d\n", i);
513 goto isobufs_out;
514 }
515 dev->isobufs[i].urb = urb;
516 } else {
517 STK_ERROR("Killing URB\n");
518 usb_kill_urb(dev->isobufs[i].urb);
519 urb = dev->isobufs[i].urb;
520 }
521 urb->interval = 1;
522 urb->dev = udev;
523 urb->pipe = usb_rcvisocpipe(udev, dev->isoc_ep);
524 urb->transfer_flags = URB_ISO_ASAP;
525 urb->transfer_buffer = dev->isobufs[i].data;
526 urb->transfer_buffer_length = ISO_BUFFER_SIZE;
527 urb->complete = stk_isoc_handler;
528 urb->context = dev;
529 urb->start_frame = 0;
530 urb->number_of_packets = ISO_FRAMES_PER_DESC;
531
532 for (j = 0; j < ISO_FRAMES_PER_DESC; j++) {
533 urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE;
534 urb->iso_frame_desc[j].length = ISO_MAX_FRAME_SIZE;
535 }
536 }
537 set_memallocd(dev);
538 return 0;
539
540isobufs_out:
541 for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].data; i++)
542 kfree(dev->isobufs[i].data);
543 for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].urb; i++)
544 usb_free_urb(dev->isobufs[i].urb);
545 kfree(dev->isobufs);
546 dev->isobufs = NULL;
547 return -ENOMEM;
548}
549
550static void stk_clean_iso(struct stk_camera *dev)
551{
552 int i;
553
554 if (dev == NULL || dev->isobufs == NULL)
555 return;
556
557 for (i = 0; i < MAX_ISO_BUFS; i++) {
558 struct urb *urb;
559
560 urb = dev->isobufs[i].urb;
561 if (urb) {
f051ae18 562 if (atomic_read(&dev->urbs_used) && is_present(dev))
ec16dae5
JVJ		 563 usb_kill_urb(urb);
564 usb_free_urb(urb);
565 }
566 kfree(dev->isobufs[i].data);
567 }
568 kfree(dev->isobufs);
569 dev->isobufs = NULL;
570 unset_memallocd(dev);
571}
572
573static int stk_setup_siobuf(struct stk_camera *dev, int index)
574{
575 struct stk_sio_buffer *buf = dev->sio_bufs + index;
576 INIT_LIST_HEAD(&buf->list);
577 buf->v4lbuf.length = PAGE_ALIGN(dev->frame_size);
578 buf->buffer = vmalloc_user(buf->v4lbuf.length);
579 if (buf->buffer == NULL)
580 return -ENOMEM;
581 buf->mapcount = 0;
582 buf->dev = dev;
583 buf->v4lbuf.index = index;
584 buf->v4lbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
585 buf->v4lbuf.field = V4L2_FIELD_NONE;
586 buf->v4lbuf.memory = V4L2_MEMORY_MMAP;
587 buf->v4lbuf.m.offset = 2*index*buf->v4lbuf.length;
588 return 0;
589}
590
591static int stk_free_sio_buffers(struct stk_camera *dev)
592{
593 int i;
594 int nbufs;
595 unsigned long flags;
596 if (dev->n_sbufs == 0 || dev->sio_bufs == NULL)
597 return 0;
598 /*
599 * If any buffers are mapped, we cannot free them at all.
600 */
601 for (i = 0; i < dev->n_sbufs; i++) {
602 if (dev->sio_bufs[i].mapcount > 0)
603 return -EBUSY;
604 }
605 /*
606 * OK, let's do it.
607 */
608 spin_lock_irqsave(&dev->spinlock, flags);
609 INIT_LIST_HEAD(&dev->sio_avail);
610 INIT_LIST_HEAD(&dev->sio_full);
611 nbufs = dev->n_sbufs;
612 dev->n_sbufs = 0;
613 spin_unlock_irqrestore(&dev->spinlock, flags);
614 for (i = 0; i < nbufs; i++) {
615 if (dev->sio_bufs[i].buffer != NULL)
616 vfree(dev->sio_bufs[i].buffer);
617 }
618 kfree(dev->sio_bufs);
619 dev->sio_bufs = NULL;
620 return 0;
621}
622
623static int stk_prepare_sio_buffers(struct stk_camera *dev, unsigned n_sbufs)
624{
625 int i;
626 if (dev->sio_bufs != NULL)
627 STK_ERROR("sio_bufs already allocated\n");
628 else {
629 dev->sio_bufs = kzalloc(n_sbufs * sizeof(struct stk_sio_buffer),
630 GFP_KERNEL);
631 if (dev->sio_bufs == NULL)
632 return -ENOMEM;
633 for (i = 0; i < n_sbufs; i++) {
634 if (stk_setup_siobuf(dev, i))
635 return (dev->n_sbufs > 1)? 0 : -ENOMEM;
636 dev->n_sbufs = i+1;
637 }
638 }
639 return 0;
640}
641
642static int stk_allocate_buffers(struct stk_camera *dev, unsigned n_sbufs)
643{
644 int err;
645 err = stk_prepare_iso(dev);
646 if (err) {
647 stk_clean_iso(dev);
648 return err;
649 }
650 err = stk_prepare_sio_buffers(dev, n_sbufs);
651 if (err) {
652 stk_free_sio_buffers(dev);
653 return err;
654 }
655 return 0;
656}
657
658static void stk_free_buffers(struct stk_camera *dev)
659{
660 stk_clean_iso(dev);
661 stk_free_sio_buffers(dev);
662}
663/* -------------------------------------------- */
664
665/* v4l file operations */
666
bec43661 667static int v4l_stk_open(struct file *fp)
ec16dae5
JVJ		 668{
669 struct stk_camera *dev;
670 struct video_device *vdev;
671
672 vdev = video_devdata(fp);
673 dev = vdev_to_camera(vdev);
674
d56dc612 675 if (dev == NULL || !is_present(dev)) {
ec16dae5 676 return -ENXIO;
d56dc612 677 }
4aaec3ea 678 fp->private_data = dev;
1fdd61c0 679 usb_autopm_get_interface(dev->interface);
ec16dae5
JVJ		 680
681 return 0;
682}
683
bec43661 684static int v4l_stk_release(struct file *fp)
ec16dae5 685{
4aaec3ea 686 struct stk_camera *dev = fp->private_data;
ec16dae5 687
f051ae18
DE		 688 if (dev->owner == fp) {
689 stk_stop_stream(dev);
690 stk_free_buffers(dev);
691 dev->owner = NULL;
ec16dae5
JVJ		 692 }
693
f051ae18
DE		 694 if(is_present(dev))
695 usb_autopm_put_interface(dev->interface);
ec16dae5
JVJ		 696
697 return 0;
698}
699
700static ssize_t v4l_stk_read(struct file *fp, char __user *buf,
701 size_t count, loff_t *f_pos)
702{
703 int i;
704 int ret;
705 unsigned long flags;
ec16dae5 706 struct stk_sio_buffer *sbuf;
4aaec3ea 707 struct stk_camera *dev = fp->private_data;
ec16dae5 708
ec16dae5
JVJ		 709 if (!is_present(dev))
710 return -EIO;
711 if (dev->owner && dev->owner != fp)
712 return -EBUSY;
713 dev->owner = fp;
714 if (!is_streaming(dev)) {
715 if (stk_initialise(dev)
716 || stk_allocate_buffers(dev, 3)
717 || stk_start_stream(dev))
718 return -ENOMEM;
719 spin_lock_irqsave(&dev->spinlock, flags);
720 for (i = 0; i < dev->n_sbufs; i++) {
721 list_add_tail(&dev->sio_bufs[i].list, &dev->sio_avail);
722 dev->sio_bufs[i].v4lbuf.flags = V4L2_BUF_FLAG_QUEUED;
723 }
724 spin_unlock_irqrestore(&dev->spinlock, flags);
725 }
726 if (*f_pos == 0) {
727 if (fp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full))
728 return -EWOULDBLOCK;
729 ret = wait_event_interruptible(dev->wait_frame,
730 !list_empty(&dev->sio_full) || !is_present(dev));
731 if (ret)
732 return ret;
733 if (!is_present(dev))
734 return -EIO;
735 }
736 if (count + *f_pos > dev->frame_size)
737 count = dev->frame_size - *f_pos;
738 spin_lock_irqsave(&dev->spinlock, flags);
739 if (list_empty(&dev->sio_full)) {
740 spin_unlock_irqrestore(&dev->spinlock, flags);
741 STK_ERROR("BUG: No siobufs ready\n");
742 return 0;
743 }
744 sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list);
745 spin_unlock_irqrestore(&dev->spinlock, flags);
746
747 if (copy_to_user(buf, sbuf->buffer + *f_pos, count))
748 return -EFAULT;
749
750 *f_pos += count;
751
752 if (*f_pos >= dev->frame_size) {
753 *f_pos = 0;
754 spin_lock_irqsave(&dev->spinlock, flags);
755 list_move_tail(&sbuf->list, &dev->sio_avail);
756 spin_unlock_irqrestore(&dev->spinlock, flags);
757 }
758 return count;
759}
760
761static unsigned int v4l_stk_poll(struct file *fp, poll_table *wait)
762{
4aaec3ea 763 struct stk_camera *dev = fp->private_data;
ec16dae5 764
ec16dae5
JVJ		 765 poll_wait(fp, &dev->wait_frame, wait);
766
767 if (!is_present(dev))
768 return POLLERR;
769
770 if (!list_empty(&dev->sio_full))
771 return (POLLIN | POLLRDNORM);
772
773 return 0;
774}
775
776
777static void stk_v4l_vm_open(struct vm_area_struct *vma)
778{
779 struct stk_sio_buffer *sbuf = vma->vm_private_data;
780 sbuf->mapcount++;
781}
782static void stk_v4l_vm_close(struct vm_area_struct *vma)
783{
784 struct stk_sio_buffer *sbuf = vma->vm_private_data;
785 sbuf->mapcount--;
786 if (sbuf->mapcount == 0)
787 sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_MAPPED;
788}
f0f37e2f 789static const struct vm_operations_struct stk_v4l_vm_ops = {
ec16dae5
JVJ		 790 .open = stk_v4l_vm_open,
791 .close = stk_v4l_vm_close
792};
793
794static int v4l_stk_mmap(struct file *fp, struct vm_area_struct *vma)
795{
796 unsigned int i;
797 int ret;
798 unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
4aaec3ea 799 struct stk_camera *dev = fp->private_data;
ec16dae5
JVJ		 800 struct stk_sio_buffer *sbuf = NULL;
801
802 if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED))
803 return -EINVAL;
804
ec16dae5
JVJ		 805 for (i = 0; i < dev->n_sbufs; i++) {
806 if (dev->sio_bufs[i].v4lbuf.m.offset == offset) {
807 sbuf = dev->sio_bufs + i;
808 break;
809 }
810 }
811 if (sbuf == NULL)
812 return -EINVAL;
813 ret = remap_vmalloc_range(vma, sbuf->buffer, 0);
814 if (ret)
815 return ret;
816 vma->vm_flags |= VM_DONTEXPAND;
817 vma->vm_private_data = sbuf;
818 vma->vm_ops = &stk_v4l_vm_ops;
819 sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_MAPPED;
820 stk_v4l_vm_open(vma);
821 return 0;
822}
823
824/* v4l ioctl handlers */
825
826static int stk_vidioc_querycap(struct file *filp,
827 void *priv, struct v4l2_capability *cap)
828{
829 strcpy(cap->driver, "stk");
830 strcpy(cap->card, "stk");
831 cap->version = DRIVER_VERSION_NUM;
832
833 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE
834 | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
835 return 0;
836}
837
838static int stk_vidioc_enum_input(struct file *filp,
839 void *priv, struct v4l2_input *input)
840{
841 if (input->index != 0)
842 return -EINVAL;
843
844 strcpy(input->name, "Syntek USB Camera");
845 input->type = V4L2_INPUT_TYPE_CAMERA;
846 return 0;
847}
848
849
850static int stk_vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
851{
852 *i = 0;
853 return 0;
854}
855
856static int stk_vidioc_s_input(struct file *filp, void *priv, unsigned int i)
857{
858 if (i != 0)
859 return -EINVAL;
860 else
861 return 0;
862}
863
864/* from vivi.c */
865static int stk_vidioc_s_std(struct file *filp, void *priv, v4l2_std_id *a)
866{
867 return 0;
868}
869
870/* List of all V4Lv2 controls supported by the driver */
871static struct v4l2_queryctrl stk_controls[] = {
872 {
873 .id = V4L2_CID_BRIGHTNESS,
874 .type = V4L2_CTRL_TYPE_INTEGER,
875 .name = "Brightness",
876 .minimum = 0,
877 .maximum = 0xffff,
878 .step = 0x0100,
879 .default_value = 0x6000,
880 },
881 /*TODO: get more controls to work */
882};
883
884static int stk_vidioc_queryctrl(struct file *filp,
885 void *priv, struct v4l2_queryctrl *c)
886{
887 int i;
888 int nbr;
889 nbr = ARRAY_SIZE(stk_controls);
890
891 for (i = 0; i < nbr; i++) {
892 if (stk_controls[i].id == c->id) {
893 memcpy(c, &stk_controls[i],
894 sizeof(struct v4l2_queryctrl));
895 return 0;
896 }
897 }
898 return -EINVAL;
899}
900
901static int stk_vidioc_g_ctrl(struct file *filp,
902 void *priv, struct v4l2_control *c)
903{
904 struct stk_camera *dev = priv;
905 switch (c->id) {
906 case V4L2_CID_BRIGHTNESS:
907 c->value = dev->vsettings.brightness;
908 break;
909 default:
910 return -EINVAL;
911 }
912 return 0;
913}
914
915static int stk_vidioc_s_ctrl(struct file *filp,
916 void *priv, struct v4l2_control *c)
917{
918 struct stk_camera *dev = priv;
919 switch (c->id) {
920 case V4L2_CID_BRIGHTNESS:
921 dev->vsettings.brightness = c->value;
922 return stk_sensor_set_brightness(dev, c->value >> 8);
923 default:
924 return -EINVAL;
925 }
926 return 0;
927}
928
929
78b526a4 930static int stk_vidioc_enum_fmt_vid_cap(struct file *filp,
ec16dae5
JVJ		 931 void *priv, struct v4l2_fmtdesc *fmtd)
932{
ec16dae5
JVJ		 933 switch (fmtd->index) {
934 case 0:
935 fmtd->pixelformat = V4L2_PIX_FMT_RGB565;
936 strcpy(fmtd->description, "r5g6b5");
937 break;
938 case 1:
939 fmtd->pixelformat = V4L2_PIX_FMT_RGB565X;
940 strcpy(fmtd->description, "r5g6b5BE");
941 break;
942 case 2:
943 fmtd->pixelformat = V4L2_PIX_FMT_UYVY;
944 strcpy(fmtd->description, "yuv4:2:2");
945 break;
946 case 3:
947 fmtd->pixelformat = V4L2_PIX_FMT_SBGGR8;
948 strcpy(fmtd->description, "Raw bayer");
949 break;
1112fb68
JVJ		 950 case 4:
951 fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
952 strcpy(fmtd->description, "yuv4:2:2");
953 break;
ec16dae5
JVJ		 954 default:
955 return -EINVAL;
956 }
957 return 0;
958}
959
960static struct stk_size {
961 unsigned w;
962 unsigned h;
963 enum stk_mode m;
964} stk_sizes[] = {
965 { .w = 1280, .h = 1024, .m = MODE_SXGA, },
966 { .w = 640, .h = 480, .m = MODE_VGA, },
967 { .w = 352, .h = 288, .m = MODE_CIF, },
968 { .w = 320, .h = 240, .m = MODE_QVGA, },
969 { .w = 176, .h = 144, .m = MODE_QCIF, },
970};
971
78b526a4 972static int stk_vidioc_g_fmt_vid_cap(struct file *filp,
ec16dae5
JVJ		 973 void *priv, struct v4l2_format *f)
974{
975 struct v4l2_pix_format *pix_format = &f->fmt.pix;
976 struct stk_camera *dev = priv;
977 int i;
978
979 for (i = 0; i < ARRAY_SIZE(stk_sizes)
980 && stk_sizes[i].m != dev->vsettings.mode;
981 i++);
982 if (i == ARRAY_SIZE(stk_sizes)) {
983 STK_ERROR("ERROR: mode invalid\n");
984 return -EINVAL;
985 }
986 pix_format->width = stk_sizes[i].w;
987 pix_format->height = stk_sizes[i].h;
988 pix_format->field = V4L2_FIELD_NONE;
989 pix_format->colorspace = V4L2_COLORSPACE_SRGB;
ec16dae5
JVJ		 990 pix_format->pixelformat = dev->vsettings.palette;
991 if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8)
992 pix_format->bytesperline = pix_format->width;
993 else
994 pix_format->bytesperline = 2 * pix_format->width;
995 pix_format->sizeimage = pix_format->bytesperline
996 * pix_format->height;
997 return 0;
998}
999
78b526a4 1000static int stk_vidioc_try_fmt_vid_cap(struct file *filp,
ec16dae5
JVJ		 1001 void *priv, struct v4l2_format *fmtd)
1002{
1003 int i;
1004 switch (fmtd->fmt.pix.pixelformat) {
1005 case V4L2_PIX_FMT_RGB565:
1006 case V4L2_PIX_FMT_RGB565X:
1007 case V4L2_PIX_FMT_UYVY:
1112fb68 1008 case V4L2_PIX_FMT_YUYV:
ec16dae5
JVJ		 1009 case V4L2_PIX_FMT_SBGGR8:
1010 break;
1011 default:
1012 return -EINVAL;
1013 }
1014 for (i = 1; i < ARRAY_SIZE(stk_sizes); i++) {
1015 if (fmtd->fmt.pix.width > stk_sizes[i].w)
1016 break;
1017 }
1018 if (i == ARRAY_SIZE(stk_sizes)
1019 || (abs(fmtd->fmt.pix.width - stk_sizes[i-1].w)
1020 < abs(fmtd->fmt.pix.width - stk_sizes[i].w))) {
1021 fmtd->fmt.pix.height = stk_sizes[i-1].h;
1022 fmtd->fmt.pix.width = stk_sizes[i-1].w;
1023 fmtd->fmt.pix.priv = i - 1;
1024 } else {
1025 fmtd->fmt.pix.height = stk_sizes[i].h;
1026 fmtd->fmt.pix.width = stk_sizes[i].w;
1027 fmtd->fmt.pix.priv = i;
1028 }
1029
1030 fmtd->fmt.pix.field = V4L2_FIELD_NONE;
1031 fmtd->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
1032 if (fmtd->fmt.pix.pixelformat == V4L2_PIX_FMT_SBGGR8)
1033 fmtd->fmt.pix.bytesperline = fmtd->fmt.pix.width;
1034 else
1035 fmtd->fmt.pix.bytesperline = 2 * fmtd->fmt.pix.width;
1036 fmtd->fmt.pix.sizeimage = fmtd->fmt.pix.bytesperline
1037 * fmtd->fmt.pix.height;
1038 return 0;
1039}
1040
1fdd61c0
JVJ		 1041static int stk_setup_format(struct stk_camera *dev)
1042{
1043 int i = 0;
1044 int depth;
1045 if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8)
1046 depth = 1;
1047 else
1048 depth = 2;
77f2c2db
RK		 1049 while (i < ARRAY_SIZE(stk_sizes) &&
1050 stk_sizes[i].m != dev->vsettings.mode)
1fdd61c0
JVJ		 1051 i++;
1052 if (i == ARRAY_SIZE(stk_sizes)) {
7e28adb2 1053 STK_ERROR("Something is broken in %s\n", __func__);
1fdd61c0
JVJ		 1054 return -EFAULT;
1055 }
1056 /* This registers controls some timings, not sure of what. */
1057 stk_camera_write_reg(dev, 0x001b, 0x0e);
1058 if (dev->vsettings.mode == MODE_SXGA)
1059 stk_camera_write_reg(dev, 0x001c, 0x0e);
1060 else
1061 stk_camera_write_reg(dev, 0x001c, 0x46);
1062 /*
1063 * Registers 0x0115 0x0114 are the size of each line (bytes),
1064 * regs 0x0117 0x0116 are the heigth of the image.
1065 */
1066 stk_camera_write_reg(dev, 0x0115,
1067 ((stk_sizes[i].w * depth) >> 8) & 0xff);
1068 stk_camera_write_reg(dev, 0x0114,
1069 (stk_sizes[i].w * depth) & 0xff);
1070 stk_camera_write_reg(dev, 0x0117,
1071 (stk_sizes[i].h >> 8) & 0xff);
1072 stk_camera_write_reg(dev, 0x0116,
1073 stk_sizes[i].h & 0xff);
1074 return stk_sensor_configure(dev);
1075}
1076
78b526a4 1077static int stk_vidioc_s_fmt_vid_cap(struct file *filp,
ec16dae5
JVJ		 1078 void *priv, struct v4l2_format *fmtd)
1079{
1080 int ret;
1081 struct stk_camera *dev = priv;
1082
1083 if (dev == NULL)
1084 return -ENODEV;
1085 if (!is_present(dev))
1086 return -ENODEV;
1087 if (is_streaming(dev))
1088 return -EBUSY;
1089 if (dev->owner && dev->owner != filp)
1090 return -EBUSY;
78b526a4 1091 ret = stk_vidioc_try_fmt_vid_cap(filp, priv, fmtd);
ec16dae5
JVJ		 1092 if (ret)
1093 return ret;
1fdd61c0 1094 dev->owner = filp;
ec16dae5
JVJ		 1095
1096 dev->vsettings.palette = fmtd->fmt.pix.pixelformat;
1097 stk_free_buffers(dev);
1098 dev->frame_size = fmtd->fmt.pix.sizeimage;
1099 dev->vsettings.mode = stk_sizes[fmtd->fmt.pix.priv].m;
1100
1101 stk_initialise(dev);
1fdd61c0 1102 return stk_setup_format(dev);
ec16dae5
JVJ		 1103}
1104
1105static int stk_vidioc_reqbufs(struct file *filp,
1106 void *priv, struct v4l2_requestbuffers *rb)
1107{
1108 struct stk_camera *dev = priv;
1109
1110 if (dev == NULL)
1111 return -ENODEV;
ec16dae5
JVJ		 1112 if (rb->memory != V4L2_MEMORY_MMAP)
1113 return -EINVAL;
1114 if (is_streaming(dev)
1115 || (dev->owner && dev->owner != filp))
1116 return -EBUSY;
1117 dev->owner = filp;
1118
1119 /*FIXME If they ask for zero, we must stop streaming and free */
1120 if (rb->count < 3)
1121 rb->count = 3;
1122 /* Arbitrary limit */
1123 else if (rb->count > 5)
1124 rb->count = 5;
1125
1126 stk_allocate_buffers(dev, rb->count);
1127 rb->count = dev->n_sbufs;
1128 return 0;
1129}
1130
1131static int stk_vidioc_querybuf(struct file *filp,
1132 void *priv, struct v4l2_buffer *buf)
1133{
ec16dae5
JVJ		 1134 struct stk_camera *dev = priv;
1135 struct stk_sio_buffer *sbuf;
1136
223ffe5f 1137 if (buf->index >= dev->n_sbufs)
ec16dae5
JVJ		 1138 return -EINVAL;
1139 sbuf = dev->sio_bufs + buf->index;
1140 *buf = sbuf->v4lbuf;
1141 return 0;
1142}
1143
1144static int stk_vidioc_qbuf(struct file *filp,
1145 void *priv, struct v4l2_buffer *buf)
1146{
1147 struct stk_camera *dev = priv;
1148 struct stk_sio_buffer *sbuf;
1149 unsigned long flags;
ec16dae5
JVJ		 1150
1151 if (buf->memory != V4L2_MEMORY_MMAP)
1152 return -EINVAL;
1153
223ffe5f 1154 if (buf->index >= dev->n_sbufs)
ec16dae5
JVJ		 1155 return -EINVAL;
1156 sbuf = dev->sio_bufs + buf->index;
1157 if (sbuf->v4lbuf.flags & V4L2_BUF_FLAG_QUEUED)
1158 return 0;
1159 sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_QUEUED;
1160 sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_DONE;
1161 spin_lock_irqsave(&dev->spinlock, flags);
1162 list_add_tail(&sbuf->list, &dev->sio_avail);
1163 *buf = sbuf->v4lbuf;
1164 spin_unlock_irqrestore(&dev->spinlock, flags);
1165 return 0;
1166}
1167
1168static int stk_vidioc_dqbuf(struct file *filp,
1169 void *priv, struct v4l2_buffer *buf)
1170{
1171 struct stk_camera *dev = priv;
1172 struct stk_sio_buffer *sbuf;
1173 unsigned long flags;
1174 int ret;
1175
2509e1cb 1176 if (!is_streaming(dev))
ec16dae5
JVJ		 1177 return -EINVAL;
1178
1179 if (filp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full))
1180 return -EWOULDBLOCK;
1181 ret = wait_event_interruptible(dev->wait_frame,
1182 !list_empty(&dev->sio_full) || !is_present(dev));
1183 if (ret)
1184 return ret;
1185 if (!is_present(dev))
1186 return -EIO;
1187
1188 spin_lock_irqsave(&dev->spinlock, flags);
1189 sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list);
1190 list_del_init(&sbuf->list);
1191 spin_unlock_irqrestore(&dev->spinlock, flags);
1192 sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_QUEUED;
1193 sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_DONE;
1194 sbuf->v4lbuf.sequence = ++dev->sequence;
1195 do_gettimeofday(&sbuf->v4lbuf.timestamp);
1196
1197 *buf = sbuf->v4lbuf;
1198 return 0;
1199}
1200
1201static int stk_vidioc_streamon(struct file *filp,
1202 void *priv, enum v4l2_buf_type type)
1203{
1204 struct stk_camera *dev = priv;
1205 if (is_streaming(dev))
1206 return 0;
1207 if (dev->sio_bufs == NULL)
1208 return -EINVAL;
1209 dev->sequence = 0;
1210 return stk_start_stream(dev);
1211}
1212
1213static int stk_vidioc_streamoff(struct file *filp,
1214 void *priv, enum v4l2_buf_type type)
1215{
1216 struct stk_camera *dev = priv;
1217 unsigned long flags;
1218 int i;
1219 stk_stop_stream(dev);
1220 spin_lock_irqsave(&dev->spinlock, flags);
1221 INIT_LIST_HEAD(&dev->sio_avail);
1222 INIT_LIST_HEAD(&dev->sio_full);
1223 for (i = 0; i < dev->n_sbufs; i++) {
1224 INIT_LIST_HEAD(&dev->sio_bufs[i].list);
1225 dev->sio_bufs[i].v4lbuf.flags = 0;
1226 }
1227 spin_unlock_irqrestore(&dev->spinlock, flags);
1228 return 0;
1229}
1230
1231
1232static int stk_vidioc_g_parm(struct file *filp,
1233 void *priv, struct v4l2_streamparm *sp)
1234{
ec16dae5
JVJ		 1235 /*FIXME This is not correct */
1236 sp->parm.capture.timeperframe.numerator = 1;
1237 sp->parm.capture.timeperframe.denominator = 30;
1238 sp->parm.capture.readbuffers = 2;
ec16dae5
JVJ		 1239 return 0;
1240}
1241
126be90f
JVJ		 1242static int stk_vidioc_enum_framesizes(struct file *filp,
1243 void *priv, struct v4l2_frmsizeenum *frms)
1244{
1245 if (frms->index >= ARRAY_SIZE(stk_sizes))
1246 return -EINVAL;
1247 switch (frms->pixel_format) {
1248 case V4L2_PIX_FMT_RGB565:
1249 case V4L2_PIX_FMT_RGB565X:
1250 case V4L2_PIX_FMT_UYVY:
1251 case V4L2_PIX_FMT_YUYV:
1252 case V4L2_PIX_FMT_SBGGR8:
1253 frms->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1254 frms->discrete.width = stk_sizes[frms->index].w;
1255 frms->discrete.height = stk_sizes[frms->index].h;
1256 return 0;
1257 default: return -EINVAL;
1258 }
1259}
1260
bec43661 1261static struct v4l2_file_operations v4l_stk_fops = {
ec16dae5
JVJ		 1262 .owner = THIS_MODULE,
1263 .open = v4l_stk_open,
1264 .release = v4l_stk_release,
1265 .read = v4l_stk_read,
1266 .poll = v4l_stk_poll,
1267 .mmap = v4l_stk_mmap,
1268 .ioctl = video_ioctl2,
ec16dae5
JVJ		 1269};
1270
a399810c 1271static const struct v4l2_ioctl_ops v4l_stk_ioctl_ops = {
ec16dae5 1272 .vidioc_querycap = stk_vidioc_querycap,
78b526a4
HV		 1273 .vidioc_enum_fmt_vid_cap = stk_vidioc_enum_fmt_vid_cap,
1274 .vidioc_try_fmt_vid_cap = stk_vidioc_try_fmt_vid_cap,
1275 .vidioc_s_fmt_vid_cap = stk_vidioc_s_fmt_vid_cap,
1276 .vidioc_g_fmt_vid_cap = stk_vidioc_g_fmt_vid_cap,
ec16dae5
JVJ		 1277 .vidioc_enum_input = stk_vidioc_enum_input,
1278 .vidioc_s_input = stk_vidioc_s_input,
1279 .vidioc_g_input = stk_vidioc_g_input,
1280 .vidioc_s_std = stk_vidioc_s_std,
1281 .vidioc_reqbufs = stk_vidioc_reqbufs,
1282 .vidioc_querybuf = stk_vidioc_querybuf,
1283 .vidioc_qbuf = stk_vidioc_qbuf,
1284 .vidioc_dqbuf = stk_vidioc_dqbuf,
1285 .vidioc_streamon = stk_vidioc_streamon,
1286 .vidioc_streamoff = stk_vidioc_streamoff,
1287 .vidioc_queryctrl = stk_vidioc_queryctrl,
1288 .vidioc_g_ctrl = stk_vidioc_g_ctrl,
1289 .vidioc_s_ctrl = stk_vidioc_s_ctrl,
1290 .vidioc_g_parm = stk_vidioc_g_parm,
126be90f 1291 .vidioc_enum_framesizes = stk_vidioc_enum_framesizes,
ec16dae5
JVJ		 1292};
1293
a399810c
HV		 1294static void stk_v4l_dev_release(struct video_device *vd)
1295{
4aaec3ea
DE		 1296 struct stk_camera *dev = vdev_to_camera(vd);
1297
1298 if (dev->sio_bufs != NULL || dev->isobufs != NULL)
1299 STK_ERROR("We are leaking memory\n");
1300 usb_put_intf(dev->interface);
1301 kfree(dev);
a399810c
HV		 1302}
1303
1304static struct video_device stk_v4l_data = {
1305 .name = "stkwebcam",
a399810c
HV		 1306 .tvnorms = V4L2_STD_UNKNOWN,
1307 .current_norm = V4L2_STD_UNKNOWN,
1308 .fops = &v4l_stk_fops,
1309 .ioctl_ops = &v4l_stk_ioctl_ops,
1310 .release = stk_v4l_dev_release,
1311};
1312
ec16dae5
JVJ		 1313
1314static int stk_register_video_device(struct stk_camera *dev)
1315{
1316 int err;
1317
1318 dev->vdev = stk_v4l_data;
1319 dev->vdev.debug = debug;
5e85e732 1320 dev->vdev.parent = &dev->interface->dev;
ec16dae5
JVJ		 1321 err = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1);
1322 if (err)
1323 STK_ERROR("v4l registration failed\n");
1324 else
38c7c036
LP		 1325 STK_INFO("Syntek USB2.0 Camera is now controlling device %s\n",
1326 video_device_node_name(&dev->vdev));
ec16dae5
JVJ		 1327 return err;
1328}
1329
1330
1331/* USB Stuff */
1332
1333static int stk_camera_probe(struct usb_interface *interface,
1334 const struct usb_device_id *id)
1335{
1336 int i;
4aaec3ea 1337 int err = 0;
ec16dae5
JVJ		 1338
1339 struct stk_camera *dev = NULL;
1340 struct usb_device *udev = interface_to_usbdev(interface);
1341 struct usb_host_interface *iface_desc;
1342 struct usb_endpoint_descriptor *endpoint;
1343
1344 dev = kzalloc(sizeof(struct stk_camera), GFP_KERNEL);
1345 if (dev == NULL) {
1346 STK_ERROR("Out of memory !\n");
1347 return -ENOMEM;
1348 }
1349
ec16dae5
JVJ		 1350 spin_lock_init(&dev->spinlock);
1351 init_waitqueue_head(&dev->wait_frame);
1352
1353 dev->udev = udev;
1354 dev->interface = interface;
1355 usb_get_intf(interface);
1356
1357 dev->vsettings.vflip = vflip;
1358 dev->vsettings.hflip = hflip;
1359 dev->n_sbufs = 0;
1360 set_present(dev);
1361
1362 /* Set up the endpoint information
1363 * use only the first isoc-in endpoint
1364 * for the current alternate setting */
1365 iface_desc = interface->cur_altsetting;
1366
1367 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
1368 endpoint = &iface_desc->endpoint[i].desc;
1369
1370 if (!dev->isoc_ep
13417982 1371 && usb_endpoint_is_isoc_in(endpoint)) {
ec16dae5 1372 /* we found an isoc in endpoint */
13417982 1373 dev->isoc_ep = usb_endpoint_num(endpoint);
ec16dae5
JVJ		 1374 break;
1375 }
1376 }
1377 if (!dev->isoc_ep) {
1378 STK_ERROR("Could not find isoc-in endpoint");
4aaec3ea
DE		 1379 err = -ENODEV;
1380 goto error;
ec16dae5
JVJ		 1381 }
1382 dev->vsettings.brightness = 0x7fff;
1383 dev->vsettings.palette = V4L2_PIX_FMT_RGB565;
1384 dev->vsettings.mode = MODE_VGA;
1112fb68 1385 dev->frame_size = 640 * 480 * 2;
ec16dae5
JVJ		 1386
1387 INIT_LIST_HEAD(&dev->sio_avail);
1388 INIT_LIST_HEAD(&dev->sio_full);
1389
1390 usb_set_intfdata(interface, dev);
1391
1392 err = stk_register_video_device(dev);
1393 if (err) {
4aaec3ea 1394 goto error;
ec16dae5
JVJ		 1395 }
1396
1397 stk_create_sysfs_files(&dev->vdev);
1398
1399 return 0;
4aaec3ea
DE		 1400
1401error:
1402 kfree(dev);
1403 return err;
ec16dae5
JVJ		 1404}
1405
1406static void stk_camera_disconnect(struct usb_interface *interface)
1407{
1408 struct stk_camera *dev = usb_get_intfdata(interface);
1409
1410 usb_set_intfdata(interface, NULL);
1411 unset_present(dev);
1412
1413 wake_up_interruptible(&dev->wait_frame);
1414 stk_remove_sysfs_files(&dev->vdev);
1415
38c7c036
LP		 1416 STK_INFO("Syntek USB2.0 Camera release resources device %s\n",
1417 video_device_node_name(&dev->vdev));
4aaec3ea
DE		 1418
1419 video_unregister_device(&dev->vdev);
ec16dae5
JVJ		 1420}
1421
1fdd61c0 1422#ifdef CONFIG_PM
4d34dccd 1423static int stk_camera_suspend(struct usb_interface *intf, pm_message_t message)
1fdd61c0
JVJ		 1424{
1425 struct stk_camera *dev = usb_get_intfdata(intf);
1426 if (is_streaming(dev)) {
1427 stk_stop_stream(dev);
1428 /* yes, this is ugly */
1429 set_streaming(dev);
1430 }
1431 return 0;
1432}
1433
4d34dccd 1434static int stk_camera_resume(struct usb_interface *intf)
1fdd61c0
JVJ		 1435{
1436 struct stk_camera *dev = usb_get_intfdata(intf);
1437 if (!is_initialised(dev))
1438 return 0;
1439 unset_initialised(dev);
1440 stk_initialise(dev);
1441 stk_setup_format(dev);
1442 if (is_streaming(dev))
1443 stk_start_stream(dev);
1444 return 0;
1445}
1446#endif
1447
ec16dae5
JVJ		 1448static struct usb_driver stk_camera_driver = {
1449 .name = "stkwebcam",
1450 .probe = stk_camera_probe,
1451 .disconnect = stk_camera_disconnect,
1452 .id_table = stkwebcam_table,
1fdd61c0
JVJ		 1453#ifdef CONFIG_PM
1454 .suspend = stk_camera_suspend,
1455 .resume = stk_camera_resume,
1456#endif
ec16dae5
JVJ		 1457};
1458
1459
1460static int __init stk_camera_init(void)
1461{
1462 int result;
1463
1464 result = usb_register(&stk_camera_driver);
1465 if (result)
1466 STK_ERROR("usb_register failed ! Error number %d\n", result);
1467
1468
1469 return result;
1470}
1471
1472static void __exit stk_camera_exit(void)
1473{
1474 usb_deregister(&stk_camera_driver);
1475}
1476
1477module_init(stk_camera_init);
1478module_exit(stk_camera_exit);
1479
1480
kernel source for telekom puls (alcatel/mediatek)