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V4L/DVB (8490): s2255drv Sensoray 2255 driver fixes
[deliverable/linux.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>
30#include <linux/kref.h>
31
32#include <linux/usb.h>
ef69c8e8 33#include <linux/mm.h>
387d4477 34#include <linux/vmalloc.h>
ec16dae5
JVJ		 35#include <linux/videodev2.h>
36#include <media/v4l2-common.h>
35ea11ff 37#include <media/v4l2-ioctl.h>
ec16dae5
JVJ		 38
39#include "stk-webcam.h"
40
41
42static int hflip = 1;
43module_param(hflip, bool, 0444);
44MODULE_PARM_DESC(hflip, "Horizontal image flip (mirror). Defaults to 1");
45
46static int vflip = 1;
47module_param(vflip, bool, 0444);
48MODULE_PARM_DESC(vflip, "Vertical image flip. Defaults to 1");
49
50static int debug;
51module_param(debug, int, 0444);
52MODULE_PARM_DESC(debug, "Debug v4l ioctls. Defaults to 0");
53
54MODULE_LICENSE("GPL");
55MODULE_AUTHOR("Jaime Velasco Juan <jsagarribay@gmail.com> and Nicolas VIVIEN");
56MODULE_DESCRIPTION("Syntek DC1125 webcam driver");
57
58
59
60/* Some cameras have audio interfaces, we aren't interested in those */
61static struct usb_device_id stkwebcam_table[] = {
62 { USB_DEVICE_AND_INTERFACE_INFO(0x174f, 0xa311, 0xff, 0xff, 0xff) },
63 { USB_DEVICE_AND_INTERFACE_INFO(0x05e1, 0x0501, 0xff, 0xff, 0xff) },
64 { }
65};
66MODULE_DEVICE_TABLE(usb, stkwebcam_table);
67
beb9e780 68static void stk_camera_cleanup(struct kref *kref)
ec16dae5
JVJ		 69{
70 struct stk_camera *dev = to_stk_camera(kref);
71
72 STK_INFO("Syntek USB2.0 Camera release resources"
73 " video device /dev/video%d\n", dev->vdev.minor);
74 video_unregister_device(&dev->vdev);
75 dev->vdev.priv = NULL;
76
77 if (dev->sio_bufs != NULL || dev->isobufs != NULL)
78 STK_ERROR("We are leaking memory\n");
79 usb_put_intf(dev->interface);
80 kfree(dev);
81}
82
83
84/*
85 * Basic stuff
86 */
87int stk_camera_write_reg(struct stk_camera *dev, u16 index, u8 value)
88{
89 struct usb_device *udev = dev->udev;
90 int ret;
91
92 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
93 0x01,
94 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
95 value,
96 index,
97 NULL,
98 0,
99 500);
100 if (ret < 0)
101 return ret;
102 else
103 return 0;
104}
105
106int stk_camera_read_reg(struct stk_camera *dev, u16 index, int *value)
107{
108 struct usb_device *udev = dev->udev;
109 int ret;
110
111 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
112 0x00,
113 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
114 0x00,
115 index,
116 (u8 *) value,
117 sizeof(u8),
118 500);
119 if (ret < 0)
120 return ret;
121 else
122 return 0;
123}
124
125static int stk_start_stream(struct stk_camera *dev)
126{
127 int value;
128 int i, ret;
129 int value_116, value_117;
130
131 if (!is_present(dev))
132 return -ENODEV;
133 if (!is_memallocd(dev) || !is_initialised(dev)) {
134 STK_ERROR("FIXME: Buffers are not allocated\n");
135 return -EFAULT;
136 }
137 ret = usb_set_interface(dev->udev, 0, 5);
138
139 if (ret < 0)
140 STK_ERROR("usb_set_interface failed !\n");
141 if (stk_sensor_wakeup(dev))
142 STK_ERROR("error awaking the sensor\n");
143
144 stk_camera_read_reg(dev, 0x0116, &value_116);
145 stk_camera_read_reg(dev, 0x0117, &value_117);
146
147 stk_camera_write_reg(dev, 0x0116, 0x0000);
148 stk_camera_write_reg(dev, 0x0117, 0x0000);
149
150 stk_camera_read_reg(dev, 0x0100, &value);
151 stk_camera_write_reg(dev, 0x0100, value | 0x80);
152
153 stk_camera_write_reg(dev, 0x0116, value_116);
154 stk_camera_write_reg(dev, 0x0117, value_117);
155 for (i = 0; i < MAX_ISO_BUFS; i++) {
156 if (dev->isobufs[i].urb) {
157 ret = usb_submit_urb(dev->isobufs[i].urb, GFP_KERNEL);
158 atomic_inc(&dev->urbs_used);
159 if (ret)
160 return ret;
161 }
162 }
163 set_streaming(dev);
164 return 0;
165}
166
167static int stk_stop_stream(struct stk_camera *dev)
168{
169 int value;
170 int i;
171 if (is_present(dev)) {
172 stk_camera_read_reg(dev, 0x0100, &value);
173 stk_camera_write_reg(dev, 0x0100, value & ~0x80);
174 if (dev->isobufs != NULL) {
175 for (i = 0; i < MAX_ISO_BUFS; i++) {
176 if (dev->isobufs[i].urb)
177 usb_kill_urb(dev->isobufs[i].urb);
178 }
179 }
180 unset_streaming(dev);
181
182 if (usb_set_interface(dev->udev, 0, 0))
183 STK_ERROR("usb_set_interface failed !\n");
184 if (stk_sensor_sleep(dev))
185 STK_ERROR("error suspending the sensor\n");
186 }
187 return 0;
188}
189
190/*
191 * This seems to be the shortest init sequence we
192 * must do in order to find the sensor
193 * Bit 5 of reg. 0x0000 here is important, when reset to 0 the sensor
194 * is also reset. Maybe powers down it?
195 * Rest of values don't make a difference
196 */
197
198static struct regval stk1125_initvals[] = {
199 /*TODO: What means this sequence? */
200 {0x0000, 0x24},
201 {0x0100, 0x21},
202 {0x0002, 0x68},
203 {0x0003, 0x80},
204 {0x0005, 0x00},
205 {0x0007, 0x03},
206 {0x000d, 0x00},
207 {0x000f, 0x02},
208 {0x0300, 0x12},
209 {0x0350, 0x41},
210 {0x0351, 0x00},
211 {0x0352, 0x00},
212 {0x0353, 0x00},
213 {0x0018, 0x10},
214 {0x0019, 0x00},
215 {0x001b, 0x0e},
216 {0x001c, 0x46},
217 {0x0300, 0x80},
218 {0x001a, 0x04},
219 {0x0110, 0x00},
220 {0x0111, 0x00},
221 {0x0112, 0x00},
222 {0x0113, 0x00},
223
224 {0xffff, 0xff},
225};
226
227
228static int stk_initialise(struct stk_camera *dev)
229{
230 struct regval *rv;
231 int ret;
232 if (!is_present(dev))
233 return -ENODEV;
234 if (is_initialised(dev))
235 return 0;
236 rv = stk1125_initvals;
237 while (rv->reg != 0xffff) {
238 ret = stk_camera_write_reg(dev, rv->reg, rv->val);
239 if (ret)
240 return ret;
241 rv++;
242 }
243 if (stk_sensor_init(dev) == 0) {
244 set_initialised(dev);
245 return 0;
246 } else
247 return -1;
248}
249
ef69c8e8
MCC		 250#ifdef CONFIG_VIDEO_V4L1_COMPAT
251
ec16dae5
JVJ		 252/* sysfs functions */
253/*FIXME cleanup this */
254
255static ssize_t show_brightness(struct device *class,
256 struct device_attribute *attr, char *buf)
257{
258 struct video_device *vdev = to_video_device(class);
259 struct stk_camera *dev = vdev_to_camera(vdev);
260
261 return sprintf(buf, "%X\n", dev->vsettings.brightness);
262}
263
264static ssize_t store_brightness(struct device *class,
265 struct device_attribute *attr, const char *buf, size_t count)
266{
267 char *endp;
268 unsigned long value;
269 int ret;
270
271 struct video_device *vdev = to_video_device(class);
272 struct stk_camera *dev = vdev_to_camera(vdev);
273
274 value = simple_strtoul(buf, &endp, 16);
275
276 dev->vsettings.brightness = (int) value;
277
278 ret = stk_sensor_set_brightness(dev, value >> 8);
279 if (ret)
280 return ret;
281 else
282 return count;
283}
284
285static ssize_t show_hflip(struct device *class,
286 struct device_attribute *attr, char *buf)
287{
288 struct video_device *vdev = to_video_device(class);
289 struct stk_camera *dev = vdev_to_camera(vdev);
290
291 return sprintf(buf, "%d\n", dev->vsettings.hflip);
292}
293
294static ssize_t store_hflip(struct device *class,
295 struct device_attribute *attr, const char *buf, size_t count)
296{
297 struct video_device *vdev = to_video_device(class);
298 struct stk_camera *dev = vdev_to_camera(vdev);
299
300 if (strncmp(buf, "1", 1) == 0)
301 dev->vsettings.hflip = 1;
302 else if (strncmp(buf, "0", 1) == 0)
303 dev->vsettings.hflip = 0;
304 else
305 return -EINVAL;
306
307 return strlen(buf);
308}
309
310static ssize_t show_vflip(struct device *class,
311 struct device_attribute *attr, char *buf)
312{
313 struct video_device *vdev = to_video_device(class);
314 struct stk_camera *dev = vdev_to_camera(vdev);
315
316 return sprintf(buf, "%d\n", dev->vsettings.vflip);
317}
318
319static ssize_t store_vflip(struct device *class,
320 struct device_attribute *attr, const char *buf, size_t count)
321{
322 struct video_device *vdev = to_video_device(class);
323 struct stk_camera *dev = vdev_to_camera(vdev);
324
325 if (strncmp(buf, "1", 1) == 0)
326 dev->vsettings.vflip = 1;
327 else if (strncmp(buf, "0", 1) == 0)
328 dev->vsettings.vflip = 0;
329 else
330 return -EINVAL;
331
332 return strlen(buf);
333}
334
335static DEVICE_ATTR(brightness, S_IRUGO | S_IWUGO,
336 show_brightness, store_brightness);
337static DEVICE_ATTR(hflip, S_IRUGO | S_IWUGO, show_hflip, store_hflip);
338static DEVICE_ATTR(vflip, S_IRUGO | S_IWUGO, show_vflip, store_vflip);
339
340static int stk_create_sysfs_files(struct video_device *vdev)
341{
342 int ret;
343
f894dfd7
HV		 344 ret = device_create_file(&vdev->dev, &dev_attr_brightness);
345 ret += device_create_file(&vdev->dev, &dev_attr_hflip);
346 ret += device_create_file(&vdev->dev, &dev_attr_vflip);
347 if (ret)
348 STK_WARNING("Could not create sysfs files\n");
ec16dae5
JVJ		 349 return ret;
350}
351
352static void stk_remove_sysfs_files(struct video_device *vdev)
353{
f894dfd7
HV		 354 device_remove_file(&vdev->dev, &dev_attr_brightness);
355 device_remove_file(&vdev->dev, &dev_attr_hflip);
356 device_remove_file(&vdev->dev, &dev_attr_vflip);
ec16dae5
JVJ		 357}
358
ef69c8e8
MCC		 359#else
360#define stk_create_sysfs_files(a)
361#define stk_remove_sysfs_files(a)
362#endif
ec16dae5
JVJ		 363
364/* *********************************************** */
365/*
366 * This function is called as an URB transfert is complete (Isochronous pipe).
367 * So, the traitement is done in interrupt time, so it has be fast, not crash,
368 * and not stall. Neat.
369 */
370static void stk_isoc_handler(struct urb *urb)
371{
372 int i;
373 int ret;
374 int framelen;
375 unsigned long flags;
376
377 unsigned char *fill = NULL;
378 unsigned char *iso_buf = NULL;
379
380 struct stk_camera *dev;
381 struct stk_sio_buffer *fb;
382
383 dev = (struct stk_camera *) urb->context;
384
385 if (dev == NULL) {
386 STK_ERROR("isoc_handler called with NULL device !\n");
387 return;
388 }
389
390 if (urb->status == -ENOENT || urb->status == -ECONNRESET
391 || urb->status == -ESHUTDOWN) {
392 atomic_dec(&dev->urbs_used);
393 return;
394 }
395
396 spin_lock_irqsave(&dev->spinlock, flags);
397
398 if (urb->status != -EINPROGRESS && urb->status != 0) {
399 STK_ERROR("isoc_handler: urb->status == %d\n", urb->status);
400 goto resubmit;
401 }
402
403 if (list_empty(&dev->sio_avail)) {
404 /*FIXME Stop streaming after a while */
405 (void) (printk_ratelimit() &&
406 STK_ERROR("isoc_handler without available buffer!\n"));
407 goto resubmit;
408 }
409 fb = list_first_entry(&dev->sio_avail,
410 struct stk_sio_buffer, list);
411 fill = fb->buffer + fb->v4lbuf.bytesused;
412
413 for (i = 0; i < urb->number_of_packets; i++) {
414 if (urb->iso_frame_desc[i].status != 0) {
415 if (urb->iso_frame_desc[i].status != -EXDEV)
416 STK_ERROR("Frame %d has error %d\n", i,
417 urb->iso_frame_desc[i].status);
418 continue;
419 }
420 framelen = urb->iso_frame_desc[i].actual_length;
421 iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
422
423 if (framelen <= 4)
424 continue; /* no data */
425
426 /*
427 * we found something informational from there
428 * the isoc frames have to type of headers
429 * type1: 00 xx 00 00 or 20 xx 00 00
430 * type2: 80 xx 00 00 00 00 00 00 or a0 xx 00 00 00 00 00 00
431 * xx is a sequencer which has never been seen over 0x3f
432 * imho data written down looks like bayer, i see similarities
433 * after every 640 bytes
434 */
435 if (*iso_buf & 0x80) {
436 framelen -= 8;
437 iso_buf += 8;
438 /* This marks a new frame */
439 if (fb->v4lbuf.bytesused != 0
440 && fb->v4lbuf.bytesused != dev->frame_size) {
441 (void) (printk_ratelimit() &&
442 STK_ERROR("frame %d, "
443 "bytesused=%d, skipping\n",
444 i, fb->v4lbuf.bytesused));
445 fb->v4lbuf.bytesused = 0;
446 fill = fb->buffer;
447 } else if (fb->v4lbuf.bytesused == dev->frame_size) {
448 list_move_tail(dev->sio_avail.next,
449 &dev->sio_full);
450 wake_up(&dev->wait_frame);
451 if (list_empty(&dev->sio_avail)) {
452 (void) (printk_ratelimit() &&
453 STK_ERROR("No buffer available\n"));
454 goto resubmit;
455 }
456 fb = list_first_entry(&dev->sio_avail,
457 struct stk_sio_buffer, list);
458 fb->v4lbuf.bytesused = 0;
459 fill = fb->buffer;
460 }
461 } else {
462 framelen -= 4;
463 iso_buf += 4;
464 }
465
466 /* Our buffer is full !!! */
467 if (framelen + fb->v4lbuf.bytesused > dev->frame_size) {
468 (void) (printk_ratelimit() &&
469 STK_ERROR("Frame buffer overflow, lost sync\n"));
470 /*FIXME Do something here? */
471 continue;
472 }
473 spin_unlock_irqrestore(&dev->spinlock, flags);
474 memcpy(fill, iso_buf, framelen);
475 spin_lock_irqsave(&dev->spinlock, flags);
476 fill += framelen;
477
478 /* New size of our buffer */
479 fb->v4lbuf.bytesused += framelen;
480 }
481
482resubmit:
483 spin_unlock_irqrestore(&dev->spinlock, flags);
484 urb->dev = dev->udev;
485 ret = usb_submit_urb(urb, GFP_ATOMIC);
486 if (ret != 0) {
487 STK_ERROR("Error (%d) re-submitting urb in stk_isoc_handler.\n",
488 ret);
489 }
490}
491
492/* -------------------------------------------- */
493
494static int stk_prepare_iso(struct stk_camera *dev)
495{
496 void *kbuf;
497 int i, j;
498 struct urb *urb;
499 struct usb_device *udev;
500
501 if (dev == NULL)
502 return -ENXIO;
503 udev = dev->udev;
504
505 if (dev->isobufs)
506 STK_ERROR("isobufs already allocated. Bad\n");
507 else
508 dev->isobufs = kzalloc(MAX_ISO_BUFS * sizeof(*dev->isobufs),
509 GFP_KERNEL);
510 if (dev->isobufs == NULL) {
511 STK_ERROR("Unable to allocate iso buffers\n");
512 return -ENOMEM;
513 }
514 for (i = 0; i < MAX_ISO_BUFS; i++) {
515 if (dev->isobufs[i].data == NULL) {
516 kbuf = kzalloc(ISO_BUFFER_SIZE, GFP_KERNEL);
517 if (kbuf == NULL) {
518 STK_ERROR("Failed to allocate iso buffer %d\n",
519 i);
520 goto isobufs_out;
521 }
522 dev->isobufs[i].data = kbuf;
523 } else
524 STK_ERROR("isobuf data already allocated\n");
525 if (dev->isobufs[i].urb == NULL) {
526 urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
527 if (urb == NULL) {
528 STK_ERROR("Failed to allocate URB %d\n", i);
529 goto isobufs_out;
530 }
531 dev->isobufs[i].urb = urb;
532 } else {
533 STK_ERROR("Killing URB\n");
534 usb_kill_urb(dev->isobufs[i].urb);
535 urb = dev->isobufs[i].urb;
536 }
537 urb->interval = 1;
538 urb->dev = udev;
539 urb->pipe = usb_rcvisocpipe(udev, dev->isoc_ep);
540 urb->transfer_flags = URB_ISO_ASAP;
541 urb->transfer_buffer = dev->isobufs[i].data;
542 urb->transfer_buffer_length = ISO_BUFFER_SIZE;
543 urb->complete = stk_isoc_handler;
544 urb->context = dev;
545 urb->start_frame = 0;
546 urb->number_of_packets = ISO_FRAMES_PER_DESC;
547
548 for (j = 0; j < ISO_FRAMES_PER_DESC; j++) {
549 urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE;
550 urb->iso_frame_desc[j].length = ISO_MAX_FRAME_SIZE;
551 }
552 }
553 set_memallocd(dev);
554 return 0;
555
556isobufs_out:
557 for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].data; i++)
558 kfree(dev->isobufs[i].data);
559 for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].urb; i++)
560 usb_free_urb(dev->isobufs[i].urb);
561 kfree(dev->isobufs);
562 dev->isobufs = NULL;
563 return -ENOMEM;
564}
565
566static void stk_clean_iso(struct stk_camera *dev)
567{
568 int i;
569
570 if (dev == NULL || dev->isobufs == NULL)
571 return;
572
573 for (i = 0; i < MAX_ISO_BUFS; i++) {
574 struct urb *urb;
575
576 urb = dev->isobufs[i].urb;
577 if (urb) {
578 if (atomic_read(&dev->urbs_used))
579 usb_kill_urb(urb);
580 usb_free_urb(urb);
581 }
582 kfree(dev->isobufs[i].data);
583 }
584 kfree(dev->isobufs);
585 dev->isobufs = NULL;
586 unset_memallocd(dev);
587}
588
589static int stk_setup_siobuf(struct stk_camera *dev, int index)
590{
591 struct stk_sio_buffer *buf = dev->sio_bufs + index;
592 INIT_LIST_HEAD(&buf->list);
593 buf->v4lbuf.length = PAGE_ALIGN(dev->frame_size);
594 buf->buffer = vmalloc_user(buf->v4lbuf.length);
595 if (buf->buffer == NULL)
596 return -ENOMEM;
597 buf->mapcount = 0;
598 buf->dev = dev;
599 buf->v4lbuf.index = index;
600 buf->v4lbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
601 buf->v4lbuf.field = V4L2_FIELD_NONE;
602 buf->v4lbuf.memory = V4L2_MEMORY_MMAP;
603 buf->v4lbuf.m.offset = 2*index*buf->v4lbuf.length;
604 return 0;
605}
606
607static int stk_free_sio_buffers(struct stk_camera *dev)
608{
609 int i;
610 int nbufs;
611 unsigned long flags;
612 if (dev->n_sbufs == 0 || dev->sio_bufs == NULL)
613 return 0;
614 /*
615 * If any buffers are mapped, we cannot free them at all.
616 */
617 for (i = 0; i < dev->n_sbufs; i++) {
618 if (dev->sio_bufs[i].mapcount > 0)
619 return -EBUSY;
620 }
621 /*
622 * OK, let's do it.
623 */
624 spin_lock_irqsave(&dev->spinlock, flags);
625 INIT_LIST_HEAD(&dev->sio_avail);
626 INIT_LIST_HEAD(&dev->sio_full);
627 nbufs = dev->n_sbufs;
628 dev->n_sbufs = 0;
629 spin_unlock_irqrestore(&dev->spinlock, flags);
630 for (i = 0; i < nbufs; i++) {
631 if (dev->sio_bufs[i].buffer != NULL)
632 vfree(dev->sio_bufs[i].buffer);
633 }
634 kfree(dev->sio_bufs);
635 dev->sio_bufs = NULL;
636 return 0;
637}
638
639static int stk_prepare_sio_buffers(struct stk_camera *dev, unsigned n_sbufs)
640{
641 int i;
642 if (dev->sio_bufs != NULL)
643 STK_ERROR("sio_bufs already allocated\n");
644 else {
645 dev->sio_bufs = kzalloc(n_sbufs * sizeof(struct stk_sio_buffer),
646 GFP_KERNEL);
647 if (dev->sio_bufs == NULL)
648 return -ENOMEM;
649 for (i = 0; i < n_sbufs; i++) {
650 if (stk_setup_siobuf(dev, i))
651 return (dev->n_sbufs > 1)? 0 : -ENOMEM;
652 dev->n_sbufs = i+1;
653 }
654 }
655 return 0;
656}
657
658static int stk_allocate_buffers(struct stk_camera *dev, unsigned n_sbufs)
659{
660 int err;
661 err = stk_prepare_iso(dev);
662 if (err) {
663 stk_clean_iso(dev);
664 return err;
665 }
666 err = stk_prepare_sio_buffers(dev, n_sbufs);
667 if (err) {
668 stk_free_sio_buffers(dev);
669 return err;
670 }
671 return 0;
672}
673
674static void stk_free_buffers(struct stk_camera *dev)
675{
676 stk_clean_iso(dev);
677 stk_free_sio_buffers(dev);
678}
679/* -------------------------------------------- */
680
681/* v4l file operations */
682
683static int v4l_stk_open(struct inode *inode, struct file *fp)
684{
685 struct stk_camera *dev;
686 struct video_device *vdev;
687
688 vdev = video_devdata(fp);
689 dev = vdev_to_camera(vdev);
690
691 if (dev == NULL || !is_present(dev))
692 return -ENXIO;
693 fp->private_data = vdev;
694 kref_get(&dev->kref);
1fdd61c0 695 usb_autopm_get_interface(dev->interface);
ec16dae5
JVJ		 696
697 return 0;
698}
699
700static int v4l_stk_release(struct inode *inode, struct file *fp)
701{
702 struct stk_camera *dev;
703 struct video_device *vdev;
704
705 vdev = video_devdata(fp);
706 if (vdev == NULL) {
707 STK_ERROR("v4l_release called w/o video devdata\n");
708 return -EFAULT;
709 }
710 dev = vdev_to_camera(vdev);
711 if (dev == NULL) {
712 STK_ERROR("v4l_release called on removed device\n");
713 return -ENODEV;
714 }
715
716 if (dev->owner != fp) {
1fdd61c0 717 usb_autopm_put_interface(dev->interface);
ec16dae5
JVJ		 718 kref_put(&dev->kref, stk_camera_cleanup);
719 return 0;
720 }
721
722 stk_stop_stream(dev);
723
724 stk_free_buffers(dev);
725
726 dev->owner = NULL;
727
1fdd61c0 728 usb_autopm_put_interface(dev->interface);
ec16dae5
JVJ		 729 kref_put(&dev->kref, stk_camera_cleanup);
730
731 return 0;
732}
733
734static ssize_t v4l_stk_read(struct file *fp, char __user *buf,
735 size_t count, loff_t *f_pos)
736{
737 int i;
738 int ret;
739 unsigned long flags;
740 struct stk_camera *dev;
741 struct video_device *vdev;
742 struct stk_sio_buffer *sbuf;
743
744 vdev = video_devdata(fp);
745 if (vdev == NULL)
746 return -EFAULT;
747 dev = vdev_to_camera(vdev);
748
749 if (dev == NULL)
750 return -EIO;
751
752 if (!is_present(dev))
753 return -EIO;
754 if (dev->owner && dev->owner != fp)
755 return -EBUSY;
756 dev->owner = fp;
757 if (!is_streaming(dev)) {
758 if (stk_initialise(dev)
759 || stk_allocate_buffers(dev, 3)
760 || stk_start_stream(dev))
761 return -ENOMEM;
762 spin_lock_irqsave(&dev->spinlock, flags);
763 for (i = 0; i < dev->n_sbufs; i++) {
764 list_add_tail(&dev->sio_bufs[i].list, &dev->sio_avail);
765 dev->sio_bufs[i].v4lbuf.flags = V4L2_BUF_FLAG_QUEUED;
766 }
767 spin_unlock_irqrestore(&dev->spinlock, flags);
768 }
769 if (*f_pos == 0) {
770 if (fp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full))
771 return -EWOULDBLOCK;
772 ret = wait_event_interruptible(dev->wait_frame,
773 !list_empty(&dev->sio_full) || !is_present(dev));
774 if (ret)
775 return ret;
776 if (!is_present(dev))
777 return -EIO;
778 }
779 if (count + *f_pos > dev->frame_size)
780 count = dev->frame_size - *f_pos;
781 spin_lock_irqsave(&dev->spinlock, flags);
782 if (list_empty(&dev->sio_full)) {
783 spin_unlock_irqrestore(&dev->spinlock, flags);
784 STK_ERROR("BUG: No siobufs ready\n");
785 return 0;
786 }
787 sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list);
788 spin_unlock_irqrestore(&dev->spinlock, flags);
789
790 if (copy_to_user(buf, sbuf->buffer + *f_pos, count))
791 return -EFAULT;
792
793 *f_pos += count;
794
795 if (*f_pos >= dev->frame_size) {
796 *f_pos = 0;
797 spin_lock_irqsave(&dev->spinlock, flags);
798 list_move_tail(&sbuf->list, &dev->sio_avail);
799 spin_unlock_irqrestore(&dev->spinlock, flags);
800 }
801 return count;
802}
803
804static unsigned int v4l_stk_poll(struct file *fp, poll_table *wait)
805{
806 struct stk_camera *dev;
807 struct video_device *vdev;
808
809 vdev = video_devdata(fp);
810
811 if (vdev == NULL)
812 return -EFAULT;
813
814 dev = vdev_to_camera(vdev);
815 if (dev == NULL)
816 return -ENODEV;
817
818 poll_wait(fp, &dev->wait_frame, wait);
819
820 if (!is_present(dev))
821 return POLLERR;
822
823 if (!list_empty(&dev->sio_full))
824 return (POLLIN | POLLRDNORM);
825
826 return 0;
827}
828
829
830static void stk_v4l_vm_open(struct vm_area_struct *vma)
831{
832 struct stk_sio_buffer *sbuf = vma->vm_private_data;
833 sbuf->mapcount++;
834}
835static void stk_v4l_vm_close(struct vm_area_struct *vma)
836{
837 struct stk_sio_buffer *sbuf = vma->vm_private_data;
838 sbuf->mapcount--;
839 if (sbuf->mapcount == 0)
840 sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_MAPPED;
841}
842static struct vm_operations_struct stk_v4l_vm_ops = {
843 .open = stk_v4l_vm_open,
844 .close = stk_v4l_vm_close
845};
846
847static int v4l_stk_mmap(struct file *fp, struct vm_area_struct *vma)
848{
849 unsigned int i;
850 int ret;
851 unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
852 struct stk_camera *dev;
853 struct video_device *vdev;
854 struct stk_sio_buffer *sbuf = NULL;
855
856 if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED))
857 return -EINVAL;
858
859 vdev = video_devdata(fp);
860 dev = vdev_to_camera(vdev);
861
862 for (i = 0; i < dev->n_sbufs; i++) {
863 if (dev->sio_bufs[i].v4lbuf.m.offset == offset) {
864 sbuf = dev->sio_bufs + i;
865 break;
866 }
867 }
868 if (sbuf == NULL)
869 return -EINVAL;
870 ret = remap_vmalloc_range(vma, sbuf->buffer, 0);
871 if (ret)
872 return ret;
873 vma->vm_flags |= VM_DONTEXPAND;
874 vma->vm_private_data = sbuf;
875 vma->vm_ops = &stk_v4l_vm_ops;
876 sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_MAPPED;
877 stk_v4l_vm_open(vma);
878 return 0;
879}
880
881/* v4l ioctl handlers */
882
883static int stk_vidioc_querycap(struct file *filp,
884 void *priv, struct v4l2_capability *cap)
885{
886 strcpy(cap->driver, "stk");
887 strcpy(cap->card, "stk");
888 cap->version = DRIVER_VERSION_NUM;
889
890 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE
891 | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
892 return 0;
893}
894
895static int stk_vidioc_enum_input(struct file *filp,
896 void *priv, struct v4l2_input *input)
897{
898 if (input->index != 0)
899 return -EINVAL;
900
901 strcpy(input->name, "Syntek USB Camera");
902 input->type = V4L2_INPUT_TYPE_CAMERA;
903 return 0;
904}
905
906
907static int stk_vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
908{
909 *i = 0;
910 return 0;
911}
912
913static int stk_vidioc_s_input(struct file *filp, void *priv, unsigned int i)
914{
915 if (i != 0)
916 return -EINVAL;
917 else
918 return 0;
919}
920
921/* from vivi.c */
922static int stk_vidioc_s_std(struct file *filp, void *priv, v4l2_std_id *a)
923{
924 return 0;
925}
926
927/* List of all V4Lv2 controls supported by the driver */
928static struct v4l2_queryctrl stk_controls[] = {
929 {
930 .id = V4L2_CID_BRIGHTNESS,
931 .type = V4L2_CTRL_TYPE_INTEGER,
932 .name = "Brightness",
933 .minimum = 0,
934 .maximum = 0xffff,
935 .step = 0x0100,
936 .default_value = 0x6000,
937 },
938 /*TODO: get more controls to work */
939};
940
941static int stk_vidioc_queryctrl(struct file *filp,
942 void *priv, struct v4l2_queryctrl *c)
943{
944 int i;
945 int nbr;
946 nbr = ARRAY_SIZE(stk_controls);
947
948 for (i = 0; i < nbr; i++) {
949 if (stk_controls[i].id == c->id) {
950 memcpy(c, &stk_controls[i],
951 sizeof(struct v4l2_queryctrl));
952 return 0;
953 }
954 }
955 return -EINVAL;
956}
957
958static int stk_vidioc_g_ctrl(struct file *filp,
959 void *priv, struct v4l2_control *c)
960{
961 struct stk_camera *dev = priv;
962 switch (c->id) {
963 case V4L2_CID_BRIGHTNESS:
964 c->value = dev->vsettings.brightness;
965 break;
966 default:
967 return -EINVAL;
968 }
969 return 0;
970}
971
972static int stk_vidioc_s_ctrl(struct file *filp,
973 void *priv, struct v4l2_control *c)
974{
975 struct stk_camera *dev = priv;
976 switch (c->id) {
977 case V4L2_CID_BRIGHTNESS:
978 dev->vsettings.brightness = c->value;
979 return stk_sensor_set_brightness(dev, c->value >> 8);
980 default:
981 return -EINVAL;
982 }
983 return 0;
984}
985
986
78b526a4 987static int stk_vidioc_enum_fmt_vid_cap(struct file *filp,
ec16dae5
JVJ		 988 void *priv, struct v4l2_fmtdesc *fmtd)
989{
990 fmtd->flags = 0;
991
992 switch (fmtd->index) {
993 case 0:
994 fmtd->pixelformat = V4L2_PIX_FMT_RGB565;
995 strcpy(fmtd->description, "r5g6b5");
996 break;
997 case 1:
998 fmtd->pixelformat = V4L2_PIX_FMT_RGB565X;
999 strcpy(fmtd->description, "r5g6b5BE");
1000 break;
1001 case 2:
1002 fmtd->pixelformat = V4L2_PIX_FMT_UYVY;
1003 strcpy(fmtd->description, "yuv4:2:2");
1004 break;
1005 case 3:
1006 fmtd->pixelformat = V4L2_PIX_FMT_SBGGR8;
1007 strcpy(fmtd->description, "Raw bayer");
1008 break;
1112fb68
JVJ		 1009 case 4:
1010 fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
1011 strcpy(fmtd->description, "yuv4:2:2");
1012 break;
ec16dae5
JVJ		 1013 default:
1014 return -EINVAL;
1015 }
1016 return 0;
1017}
1018
1019static struct stk_size {
1020 unsigned w;
1021 unsigned h;
1022 enum stk_mode m;
1023} stk_sizes[] = {
1024 { .w = 1280, .h = 1024, .m = MODE_SXGA, },
1025 { .w = 640, .h = 480, .m = MODE_VGA, },
1026 { .w = 352, .h = 288, .m = MODE_CIF, },
1027 { .w = 320, .h = 240, .m = MODE_QVGA, },
1028 { .w = 176, .h = 144, .m = MODE_QCIF, },
1029};
1030
78b526a4 1031static int stk_vidioc_g_fmt_vid_cap(struct file *filp,
ec16dae5
JVJ		 1032 void *priv, struct v4l2_format *f)
1033{
1034 struct v4l2_pix_format *pix_format = &f->fmt.pix;
1035 struct stk_camera *dev = priv;
1036 int i;
1037
1038 for (i = 0; i < ARRAY_SIZE(stk_sizes)
1039 && stk_sizes[i].m != dev->vsettings.mode;
1040 i++);
1041 if (i == ARRAY_SIZE(stk_sizes)) {
1042 STK_ERROR("ERROR: mode invalid\n");
1043 return -EINVAL;
1044 }
1045 pix_format->width = stk_sizes[i].w;
1046 pix_format->height = stk_sizes[i].h;
1047 pix_format->field = V4L2_FIELD_NONE;
1048 pix_format->colorspace = V4L2_COLORSPACE_SRGB;
1049 pix_format->priv = 0;
1050 pix_format->pixelformat = dev->vsettings.palette;
1051 if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8)
1052 pix_format->bytesperline = pix_format->width;
1053 else
1054 pix_format->bytesperline = 2 * pix_format->width;
1055 pix_format->sizeimage = pix_format->bytesperline
1056 * pix_format->height;
1057 return 0;
1058}
1059
78b526a4 1060static int stk_vidioc_try_fmt_vid_cap(struct file *filp,
ec16dae5
JVJ		 1061 void *priv, struct v4l2_format *fmtd)
1062{
1063 int i;
1064 switch (fmtd->fmt.pix.pixelformat) {
1065 case V4L2_PIX_FMT_RGB565:
1066 case V4L2_PIX_FMT_RGB565X:
1067 case V4L2_PIX_FMT_UYVY:
1112fb68 1068 case V4L2_PIX_FMT_YUYV:
ec16dae5
JVJ		 1069 case V4L2_PIX_FMT_SBGGR8:
1070 break;
1071 default:
1072 return -EINVAL;
1073 }
1074 for (i = 1; i < ARRAY_SIZE(stk_sizes); i++) {
1075 if (fmtd->fmt.pix.width > stk_sizes[i].w)
1076 break;
1077 }
1078 if (i == ARRAY_SIZE(stk_sizes)
1079 || (abs(fmtd->fmt.pix.width - stk_sizes[i-1].w)
1080 < abs(fmtd->fmt.pix.width - stk_sizes[i].w))) {
1081 fmtd->fmt.pix.height = stk_sizes[i-1].h;
1082 fmtd->fmt.pix.width = stk_sizes[i-1].w;
1083 fmtd->fmt.pix.priv = i - 1;
1084 } else {
1085 fmtd->fmt.pix.height = stk_sizes[i].h;
1086 fmtd->fmt.pix.width = stk_sizes[i].w;
1087 fmtd->fmt.pix.priv = i;
1088 }
1089
1090 fmtd->fmt.pix.field = V4L2_FIELD_NONE;
1091 fmtd->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
1092 if (fmtd->fmt.pix.pixelformat == V4L2_PIX_FMT_SBGGR8)
1093 fmtd->fmt.pix.bytesperline = fmtd->fmt.pix.width;
1094 else
1095 fmtd->fmt.pix.bytesperline = 2 * fmtd->fmt.pix.width;
1096 fmtd->fmt.pix.sizeimage = fmtd->fmt.pix.bytesperline
1097 * fmtd->fmt.pix.height;
1098 return 0;
1099}
1100
1fdd61c0
JVJ		 1101static int stk_setup_format(struct stk_camera *dev)
1102{
1103 int i = 0;
1104 int depth;
1105 if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8)
1106 depth = 1;
1107 else
1108 depth = 2;
1109 while (stk_sizes[i].m != dev->vsettings.mode
1110 && i < ARRAY_SIZE(stk_sizes))
1111 i++;
1112 if (i == ARRAY_SIZE(stk_sizes)) {
7e28adb2 1113 STK_ERROR("Something is broken in %s\n", __func__);
1fdd61c0
JVJ		 1114 return -EFAULT;
1115 }
1116 /* This registers controls some timings, not sure of what. */
1117 stk_camera_write_reg(dev, 0x001b, 0x0e);
1118 if (dev->vsettings.mode == MODE_SXGA)
1119 stk_camera_write_reg(dev, 0x001c, 0x0e);
1120 else
1121 stk_camera_write_reg(dev, 0x001c, 0x46);
1122 /*
1123 * Registers 0x0115 0x0114 are the size of each line (bytes),
1124 * regs 0x0117 0x0116 are the heigth of the image.
1125 */
1126 stk_camera_write_reg(dev, 0x0115,
1127 ((stk_sizes[i].w * depth) >> 8) & 0xff);
1128 stk_camera_write_reg(dev, 0x0114,
1129 (stk_sizes[i].w * depth) & 0xff);
1130 stk_camera_write_reg(dev, 0x0117,
1131 (stk_sizes[i].h >> 8) & 0xff);
1132 stk_camera_write_reg(dev, 0x0116,
1133 stk_sizes[i].h & 0xff);
1134 return stk_sensor_configure(dev);
1135}
1136
78b526a4 1137static int stk_vidioc_s_fmt_vid_cap(struct file *filp,
ec16dae5
JVJ		 1138 void *priv, struct v4l2_format *fmtd)
1139{
1140 int ret;
1141 struct stk_camera *dev = priv;
1142
1143 if (dev == NULL)
1144 return -ENODEV;
1145 if (!is_present(dev))
1146 return -ENODEV;
1147 if (is_streaming(dev))
1148 return -EBUSY;
1149 if (dev->owner && dev->owner != filp)
1150 return -EBUSY;
78b526a4 1151 ret = stk_vidioc_try_fmt_vid_cap(filp, priv, fmtd);
ec16dae5
JVJ		 1152 if (ret)
1153 return ret;
1fdd61c0 1154 dev->owner = filp;
ec16dae5
JVJ		 1155
1156 dev->vsettings.palette = fmtd->fmt.pix.pixelformat;
1157 stk_free_buffers(dev);
1158 dev->frame_size = fmtd->fmt.pix.sizeimage;
1159 dev->vsettings.mode = stk_sizes[fmtd->fmt.pix.priv].m;
1160
1161 stk_initialise(dev);
1fdd61c0 1162 return stk_setup_format(dev);
ec16dae5
JVJ		 1163}
1164
1165static int stk_vidioc_reqbufs(struct file *filp,
1166 void *priv, struct v4l2_requestbuffers *rb)
1167{
1168 struct stk_camera *dev = priv;
1169
1170 if (dev == NULL)
1171 return -ENODEV;
1172 if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1173 return -EINVAL;
1174 if (rb->memory != V4L2_MEMORY_MMAP)
1175 return -EINVAL;
1176 if (is_streaming(dev)
1177 || (dev->owner && dev->owner != filp))
1178 return -EBUSY;
1179 dev->owner = filp;
1180
1181 /*FIXME If they ask for zero, we must stop streaming and free */
1182 if (rb->count < 3)
1183 rb->count = 3;
1184 /* Arbitrary limit */
1185 else if (rb->count > 5)
1186 rb->count = 5;
1187
1188 stk_allocate_buffers(dev, rb->count);
1189 rb->count = dev->n_sbufs;
1190 return 0;
1191}
1192
1193static int stk_vidioc_querybuf(struct file *filp,
1194 void *priv, struct v4l2_buffer *buf)
1195{
1196 int index;
1197 struct stk_camera *dev = priv;
1198 struct stk_sio_buffer *sbuf;
1199
1200 if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1201 return -EINVAL;
1202
1203 index = buf->index;
1204
1205 if (index < 0 || index >= dev->n_sbufs)
1206 return -EINVAL;
1207 sbuf = dev->sio_bufs + buf->index;
1208 *buf = sbuf->v4lbuf;
1209 return 0;
1210}
1211
1212static int stk_vidioc_qbuf(struct file *filp,
1213 void *priv, struct v4l2_buffer *buf)
1214{
1215 struct stk_camera *dev = priv;
1216 struct stk_sio_buffer *sbuf;
1217 unsigned long flags;
1218 if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1219 return -EINVAL;
1220
1221 if (buf->memory != V4L2_MEMORY_MMAP)
1222 return -EINVAL;
1223
1224 if (buf->index < 0 || buf->index >= dev->n_sbufs)
1225 return -EINVAL;
1226 sbuf = dev->sio_bufs + buf->index;
1227 if (sbuf->v4lbuf.flags & V4L2_BUF_FLAG_QUEUED)
1228 return 0;
1229 sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_QUEUED;
1230 sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_DONE;
1231 spin_lock_irqsave(&dev->spinlock, flags);
1232 list_add_tail(&sbuf->list, &dev->sio_avail);
1233 *buf = sbuf->v4lbuf;
1234 spin_unlock_irqrestore(&dev->spinlock, flags);
1235 return 0;
1236}
1237
1238static int stk_vidioc_dqbuf(struct file *filp,
1239 void *priv, struct v4l2_buffer *buf)
1240{
1241 struct stk_camera *dev = priv;
1242 struct stk_sio_buffer *sbuf;
1243 unsigned long flags;
1244 int ret;
1245
1246 if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE
1247 || !is_streaming(dev))
1248 return -EINVAL;
1249
1250 if (filp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full))
1251 return -EWOULDBLOCK;
1252 ret = wait_event_interruptible(dev->wait_frame,
1253 !list_empty(&dev->sio_full) || !is_present(dev));
1254 if (ret)
1255 return ret;
1256 if (!is_present(dev))
1257 return -EIO;
1258
1259 spin_lock_irqsave(&dev->spinlock, flags);
1260 sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list);
1261 list_del_init(&sbuf->list);
1262 spin_unlock_irqrestore(&dev->spinlock, flags);
1263 sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_QUEUED;
1264 sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_DONE;
1265 sbuf->v4lbuf.sequence = ++dev->sequence;
1266 do_gettimeofday(&sbuf->v4lbuf.timestamp);
1267
1268 *buf = sbuf->v4lbuf;
1269 return 0;
1270}
1271
1272static int stk_vidioc_streamon(struct file *filp,
1273 void *priv, enum v4l2_buf_type type)
1274{
1275 struct stk_camera *dev = priv;
1276 if (is_streaming(dev))
1277 return 0;
1278 if (dev->sio_bufs == NULL)
1279 return -EINVAL;
1280 dev->sequence = 0;
1281 return stk_start_stream(dev);
1282}
1283
1284static int stk_vidioc_streamoff(struct file *filp,
1285 void *priv, enum v4l2_buf_type type)
1286{
1287 struct stk_camera *dev = priv;
1288 unsigned long flags;
1289 int i;
1290 stk_stop_stream(dev);
1291 spin_lock_irqsave(&dev->spinlock, flags);
1292 INIT_LIST_HEAD(&dev->sio_avail);
1293 INIT_LIST_HEAD(&dev->sio_full);
1294 for (i = 0; i < dev->n_sbufs; i++) {
1295 INIT_LIST_HEAD(&dev->sio_bufs[i].list);
1296 dev->sio_bufs[i].v4lbuf.flags = 0;
1297 }
1298 spin_unlock_irqrestore(&dev->spinlock, flags);
1299 return 0;
1300}
1301
1302
1303static int stk_vidioc_g_parm(struct file *filp,
1304 void *priv, struct v4l2_streamparm *sp)
1305{
1306 if (sp->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1307 return -EINVAL;
1308
1309 sp->parm.capture.capability = 0;
1310 sp->parm.capture.capturemode = 0;
1311 /*FIXME This is not correct */
1312 sp->parm.capture.timeperframe.numerator = 1;
1313 sp->parm.capture.timeperframe.denominator = 30;
1314 sp->parm.capture.readbuffers = 2;
1315 sp->parm.capture.extendedmode = 0;
1316 return 0;
1317}
1318
1319static struct file_operations v4l_stk_fops = {
1320 .owner = THIS_MODULE,
1321 .open = v4l_stk_open,
1322 .release = v4l_stk_release,
1323 .read = v4l_stk_read,
1324 .poll = v4l_stk_poll,
1325 .mmap = v4l_stk_mmap,
1326 .ioctl = video_ioctl2,
2de3a5a5
JVJ		 1327#ifdef CONFIG_COMPAT
1328 .compat_ioctl = v4l_compat_ioctl32,
1329#endif
ec16dae5
JVJ		 1330 .llseek = no_llseek
1331};
1332
a399810c 1333static const struct v4l2_ioctl_ops v4l_stk_ioctl_ops = {
ec16dae5 1334 .vidioc_querycap = stk_vidioc_querycap,
78b526a4
HV		 1335 .vidioc_enum_fmt_vid_cap = stk_vidioc_enum_fmt_vid_cap,
1336 .vidioc_try_fmt_vid_cap = stk_vidioc_try_fmt_vid_cap,
1337 .vidioc_s_fmt_vid_cap = stk_vidioc_s_fmt_vid_cap,
1338 .vidioc_g_fmt_vid_cap = stk_vidioc_g_fmt_vid_cap,
ec16dae5
JVJ		 1339 .vidioc_enum_input = stk_vidioc_enum_input,
1340 .vidioc_s_input = stk_vidioc_s_input,
1341 .vidioc_g_input = stk_vidioc_g_input,
1342 .vidioc_s_std = stk_vidioc_s_std,
1343 .vidioc_reqbufs = stk_vidioc_reqbufs,
1344 .vidioc_querybuf = stk_vidioc_querybuf,
1345 .vidioc_qbuf = stk_vidioc_qbuf,
1346 .vidioc_dqbuf = stk_vidioc_dqbuf,
1347 .vidioc_streamon = stk_vidioc_streamon,
1348 .vidioc_streamoff = stk_vidioc_streamoff,
1349 .vidioc_queryctrl = stk_vidioc_queryctrl,
1350 .vidioc_g_ctrl = stk_vidioc_g_ctrl,
1351 .vidioc_s_ctrl = stk_vidioc_s_ctrl,
1352 .vidioc_g_parm = stk_vidioc_g_parm,
1353};
1354
a399810c
HV		 1355static void stk_v4l_dev_release(struct video_device *vd)
1356{
1357}
1358
1359static struct video_device stk_v4l_data = {
1360 .name = "stkwebcam",
1361 .type = VFL_TYPE_GRABBER,
1362 .type2 = VID_TYPE_CAPTURE,
1363 .minor = -1,
1364 .tvnorms = V4L2_STD_UNKNOWN,
1365 .current_norm = V4L2_STD_UNKNOWN,
1366 .fops = &v4l_stk_fops,
1367 .ioctl_ops = &v4l_stk_ioctl_ops,
1368 .release = stk_v4l_dev_release,
1369};
1370
ec16dae5
JVJ		 1371
1372static int stk_register_video_device(struct stk_camera *dev)
1373{
1374 int err;
1375
1376 dev->vdev = stk_v4l_data;
1377 dev->vdev.debug = debug;
5e85e732 1378 dev->vdev.parent = &dev->interface->dev;
ec16dae5
JVJ		 1379 dev->vdev.priv = dev;
1380 err = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1);
1381 if (err)
1382 STK_ERROR("v4l registration failed\n");
1383 else
1384 STK_INFO("Syntek USB2.0 Camera is now controlling video device"
1385 " /dev/video%d\n", dev->vdev.minor);
1386 return err;
1387}
1388
1389
1390/* USB Stuff */
1391
1392static int stk_camera_probe(struct usb_interface *interface,
1393 const struct usb_device_id *id)
1394{
1395 int i;
1396 int err;
1397
1398 struct stk_camera *dev = NULL;
1399 struct usb_device *udev = interface_to_usbdev(interface);
1400 struct usb_host_interface *iface_desc;
1401 struct usb_endpoint_descriptor *endpoint;
1402
1403 dev = kzalloc(sizeof(struct stk_camera), GFP_KERNEL);
1404 if (dev == NULL) {
1405 STK_ERROR("Out of memory !\n");
1406 return -ENOMEM;
1407 }
1408
1409 kref_init(&dev->kref);
1410 spin_lock_init(&dev->spinlock);
1411 init_waitqueue_head(&dev->wait_frame);
1412
1413 dev->udev = udev;
1414 dev->interface = interface;
1415 usb_get_intf(interface);
1416
1417 dev->vsettings.vflip = vflip;
1418 dev->vsettings.hflip = hflip;
1419 dev->n_sbufs = 0;
1420 set_present(dev);
1421
1422 /* Set up the endpoint information
1423 * use only the first isoc-in endpoint
1424 * for the current alternate setting */
1425 iface_desc = interface->cur_altsetting;
1426
1427 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
1428 endpoint = &iface_desc->endpoint[i].desc;
1429
1430 if (!dev->isoc_ep
1431 && ((endpoint->bEndpointAddress
1432 & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
1433 && ((endpoint->bmAttributes
1434 & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_ISOC)) {
1435 /* we found an isoc in endpoint */
1436 dev->isoc_ep = (endpoint->bEndpointAddress & 0xF);
1437 break;
1438 }
1439 }
1440 if (!dev->isoc_ep) {
1441 STK_ERROR("Could not find isoc-in endpoint");
1442 kref_put(&dev->kref, stk_camera_cleanup);
1443 return -ENODEV;
1444 }
1445 dev->vsettings.brightness = 0x7fff;
1446 dev->vsettings.palette = V4L2_PIX_FMT_RGB565;
1447 dev->vsettings.mode = MODE_VGA;
1112fb68 1448 dev->frame_size = 640 * 480 * 2;
ec16dae5
JVJ		 1449
1450 INIT_LIST_HEAD(&dev->sio_avail);
1451 INIT_LIST_HEAD(&dev->sio_full);
1452
1453 usb_set_intfdata(interface, dev);
1454
1455 err = stk_register_video_device(dev);
1456 if (err) {
1457 kref_put(&dev->kref, stk_camera_cleanup);
1458 return err;
1459 }
1460
1461 stk_create_sysfs_files(&dev->vdev);
1fdd61c0 1462 usb_autopm_enable(dev->interface);
ec16dae5
JVJ		 1463
1464 return 0;
1465}
1466
1467static void stk_camera_disconnect(struct usb_interface *interface)
1468{
1469 struct stk_camera *dev = usb_get_intfdata(interface);
1470
1471 usb_set_intfdata(interface, NULL);
1472 unset_present(dev);
1473
1474 wake_up_interruptible(&dev->wait_frame);
1475 stk_remove_sysfs_files(&dev->vdev);
1476
1477 kref_put(&dev->kref, stk_camera_cleanup);
1478}
1479
1fdd61c0 1480#ifdef CONFIG_PM
4d34dccd 1481static int stk_camera_suspend(struct usb_interface *intf, pm_message_t message)
1fdd61c0
JVJ		 1482{
1483 struct stk_camera *dev = usb_get_intfdata(intf);
1484 if (is_streaming(dev)) {
1485 stk_stop_stream(dev);
1486 /* yes, this is ugly */
1487 set_streaming(dev);
1488 }
1489 return 0;
1490}
1491
4d34dccd 1492static int stk_camera_resume(struct usb_interface *intf)
1fdd61c0
JVJ		 1493{
1494 struct stk_camera *dev = usb_get_intfdata(intf);
1495 if (!is_initialised(dev))
1496 return 0;
1497 unset_initialised(dev);
1498 stk_initialise(dev);
1499 stk_setup_format(dev);
1500 if (is_streaming(dev))
1501 stk_start_stream(dev);
1502 return 0;
1503}
1504#endif
1505
ec16dae5
JVJ		 1506static struct usb_driver stk_camera_driver = {
1507 .name = "stkwebcam",
1508 .probe = stk_camera_probe,
1509 .disconnect = stk_camera_disconnect,
1510 .id_table = stkwebcam_table,
1fdd61c0
JVJ		 1511#ifdef CONFIG_PM
1512 .suspend = stk_camera_suspend,
1513 .resume = stk_camera_resume,
1514#endif
ec16dae5
JVJ		 1515};
1516
1517
1518static int __init stk_camera_init(void)
1519{
1520 int result;
1521
1522 result = usb_register(&stk_camera_driver);
1523 if (result)
1524 STK_ERROR("usb_register failed ! Error number %d\n", result);
1525
1526
1527 return result;
1528}
1529
1530static void __exit stk_camera_exit(void)
1531{
1532 usb_deregister(&stk_camera_driver);
1533}
1534
1535module_init(stk_camera_init);
1536module_exit(stk_camera_exit);
1537
1538
Linux kernel - Deliverables
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