blob: db69bc5556d6776c84a51c78f7460f927d04d350 [file] [log] [blame]
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001/*
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>
Mauro Carvalho Chehabef69c8e2008-05-01 02:17:24 -030033#include <linux/mm.h>
Mauro Carvalho Chehab387d4472008-01-15 11:25:10 -030034#include <linux/vmalloc.h>
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -030035#include <linux/videodev2.h>
36#include <media/v4l2-common.h>
Hans Verkuil35ea11f2008-07-20 08:12:02 -030037#include <media/v4l2-ioctl.h>
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -030038
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
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -030068/*
69 * Basic stuff
70 */
71int stk_camera_write_reg(struct stk_camera *dev, u16 index, u8 value)
72{
73 struct usb_device *udev = dev->udev;
74 int ret;
75
76 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
77 0x01,
78 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
79 value,
80 index,
81 NULL,
82 0,
83 500);
84 if (ret < 0)
85 return ret;
86 else
87 return 0;
88}
89
90int stk_camera_read_reg(struct stk_camera *dev, u16 index, int *value)
91{
92 struct usb_device *udev = dev->udev;
93 int ret;
94
95 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
96 0x00,
97 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
98 0x00,
99 index,
100 (u8 *) value,
101 sizeof(u8),
102 500);
103 if (ret < 0)
104 return ret;
105 else
106 return 0;
107}
108
109static int stk_start_stream(struct stk_camera *dev)
110{
111 int value;
112 int i, ret;
113 int value_116, value_117;
114
115 if (!is_present(dev))
116 return -ENODEV;
117 if (!is_memallocd(dev) || !is_initialised(dev)) {
118 STK_ERROR("FIXME: Buffers are not allocated\n");
119 return -EFAULT;
120 }
121 ret = usb_set_interface(dev->udev, 0, 5);
122
123 if (ret < 0)
124 STK_ERROR("usb_set_interface failed !\n");
125 if (stk_sensor_wakeup(dev))
126 STK_ERROR("error awaking the sensor\n");
127
128 stk_camera_read_reg(dev, 0x0116, &value_116);
129 stk_camera_read_reg(dev, 0x0117, &value_117);
130
131 stk_camera_write_reg(dev, 0x0116, 0x0000);
132 stk_camera_write_reg(dev, 0x0117, 0x0000);
133
134 stk_camera_read_reg(dev, 0x0100, &value);
135 stk_camera_write_reg(dev, 0x0100, value | 0x80);
136
137 stk_camera_write_reg(dev, 0x0116, value_116);
138 stk_camera_write_reg(dev, 0x0117, value_117);
139 for (i = 0; i < MAX_ISO_BUFS; i++) {
140 if (dev->isobufs[i].urb) {
141 ret = usb_submit_urb(dev->isobufs[i].urb, GFP_KERNEL);
142 atomic_inc(&dev->urbs_used);
143 if (ret)
144 return ret;
145 }
146 }
147 set_streaming(dev);
148 return 0;
149}
150
151static int stk_stop_stream(struct stk_camera *dev)
152{
153 int value;
154 int i;
155 if (is_present(dev)) {
156 stk_camera_read_reg(dev, 0x0100, &value);
157 stk_camera_write_reg(dev, 0x0100, value & ~0x80);
158 if (dev->isobufs != NULL) {
159 for (i = 0; i < MAX_ISO_BUFS; i++) {
160 if (dev->isobufs[i].urb)
161 usb_kill_urb(dev->isobufs[i].urb);
162 }
163 }
164 unset_streaming(dev);
165
166 if (usb_set_interface(dev->udev, 0, 0))
167 STK_ERROR("usb_set_interface failed !\n");
168 if (stk_sensor_sleep(dev))
169 STK_ERROR("error suspending the sensor\n");
170 }
171 return 0;
172}
173
174/*
175 * This seems to be the shortest init sequence we
176 * must do in order to find the sensor
177 * Bit 5 of reg. 0x0000 here is important, when reset to 0 the sensor
178 * is also reset. Maybe powers down it?
179 * Rest of values don't make a difference
180 */
181
182static struct regval stk1125_initvals[] = {
183 /*TODO: What means this sequence? */
184 {0x0000, 0x24},
185 {0x0100, 0x21},
186 {0x0002, 0x68},
187 {0x0003, 0x80},
188 {0x0005, 0x00},
189 {0x0007, 0x03},
190 {0x000d, 0x00},
191 {0x000f, 0x02},
192 {0x0300, 0x12},
193 {0x0350, 0x41},
194 {0x0351, 0x00},
195 {0x0352, 0x00},
196 {0x0353, 0x00},
197 {0x0018, 0x10},
198 {0x0019, 0x00},
199 {0x001b, 0x0e},
200 {0x001c, 0x46},
201 {0x0300, 0x80},
202 {0x001a, 0x04},
203 {0x0110, 0x00},
204 {0x0111, 0x00},
205 {0x0112, 0x00},
206 {0x0113, 0x00},
207
208 {0xffff, 0xff},
209};
210
211
212static int stk_initialise(struct stk_camera *dev)
213{
214 struct regval *rv;
215 int ret;
216 if (!is_present(dev))
217 return -ENODEV;
218 if (is_initialised(dev))
219 return 0;
220 rv = stk1125_initvals;
221 while (rv->reg != 0xffff) {
222 ret = stk_camera_write_reg(dev, rv->reg, rv->val);
223 if (ret)
224 return ret;
225 rv++;
226 }
227 if (stk_sensor_init(dev) == 0) {
228 set_initialised(dev);
229 return 0;
230 } else
231 return -1;
232}
233
Mauro Carvalho Chehabef69c8e2008-05-01 02:17:24 -0300234#ifdef CONFIG_VIDEO_V4L1_COMPAT
235
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300236/* sysfs functions */
237/*FIXME cleanup this */
238
239static ssize_t show_brightness(struct device *class,
240 struct device_attribute *attr, char *buf)
241{
242 struct video_device *vdev = to_video_device(class);
243 struct stk_camera *dev = vdev_to_camera(vdev);
244
245 return sprintf(buf, "%X\n", dev->vsettings.brightness);
246}
247
248static ssize_t store_brightness(struct device *class,
249 struct device_attribute *attr, const char *buf, size_t count)
250{
251 char *endp;
252 unsigned long value;
253 int ret;
254
255 struct video_device *vdev = to_video_device(class);
256 struct stk_camera *dev = vdev_to_camera(vdev);
257
258 value = simple_strtoul(buf, &endp, 16);
259
260 dev->vsettings.brightness = (int) value;
261
262 ret = stk_sensor_set_brightness(dev, value >> 8);
263 if (ret)
264 return ret;
265 else
266 return count;
267}
268
269static ssize_t show_hflip(struct device *class,
270 struct device_attribute *attr, char *buf)
271{
272 struct video_device *vdev = to_video_device(class);
273 struct stk_camera *dev = vdev_to_camera(vdev);
274
275 return sprintf(buf, "%d\n", dev->vsettings.hflip);
276}
277
278static ssize_t store_hflip(struct device *class,
279 struct device_attribute *attr, const char *buf, size_t count)
280{
281 struct video_device *vdev = to_video_device(class);
282 struct stk_camera *dev = vdev_to_camera(vdev);
283
284 if (strncmp(buf, "1", 1) == 0)
285 dev->vsettings.hflip = 1;
286 else if (strncmp(buf, "0", 1) == 0)
287 dev->vsettings.hflip = 0;
288 else
289 return -EINVAL;
290
291 return strlen(buf);
292}
293
294static ssize_t show_vflip(struct device *class,
295 struct device_attribute *attr, char *buf)
296{
297 struct video_device *vdev = to_video_device(class);
298 struct stk_camera *dev = vdev_to_camera(vdev);
299
300 return sprintf(buf, "%d\n", dev->vsettings.vflip);
301}
302
303static ssize_t store_vflip(struct device *class,
304 struct device_attribute *attr, const char *buf, size_t count)
305{
306 struct video_device *vdev = to_video_device(class);
307 struct stk_camera *dev = vdev_to_camera(vdev);
308
309 if (strncmp(buf, "1", 1) == 0)
310 dev->vsettings.vflip = 1;
311 else if (strncmp(buf, "0", 1) == 0)
312 dev->vsettings.vflip = 0;
313 else
314 return -EINVAL;
315
316 return strlen(buf);
317}
318
319static DEVICE_ATTR(brightness, S_IRUGO | S_IWUGO,
320 show_brightness, store_brightness);
321static DEVICE_ATTR(hflip, S_IRUGO | S_IWUGO, show_hflip, store_hflip);
322static DEVICE_ATTR(vflip, S_IRUGO | S_IWUGO, show_vflip, store_vflip);
323
324static int stk_create_sysfs_files(struct video_device *vdev)
325{
326 int ret;
327
Hans Verkuilf894dfd2008-07-25 07:39:54 -0300328 ret = device_create_file(&vdev->dev, &dev_attr_brightness);
329 ret += device_create_file(&vdev->dev, &dev_attr_hflip);
330 ret += device_create_file(&vdev->dev, &dev_attr_vflip);
331 if (ret)
332 STK_WARNING("Could not create sysfs files\n");
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300333 return ret;
334}
335
336static void stk_remove_sysfs_files(struct video_device *vdev)
337{
Hans Verkuilf894dfd2008-07-25 07:39:54 -0300338 device_remove_file(&vdev->dev, &dev_attr_brightness);
339 device_remove_file(&vdev->dev, &dev_attr_hflip);
340 device_remove_file(&vdev->dev, &dev_attr_vflip);
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300341}
342
Mauro Carvalho Chehabef69c8e2008-05-01 02:17:24 -0300343#else
344#define stk_create_sysfs_files(a)
345#define stk_remove_sysfs_files(a)
346#endif
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300347
348/* *********************************************** */
349/*
350 * This function is called as an URB transfert is complete (Isochronous pipe).
351 * So, the traitement is done in interrupt time, so it has be fast, not crash,
352 * and not stall. Neat.
353 */
354static void stk_isoc_handler(struct urb *urb)
355{
356 int i;
357 int ret;
358 int framelen;
359 unsigned long flags;
360
361 unsigned char *fill = NULL;
362 unsigned char *iso_buf = NULL;
363
364 struct stk_camera *dev;
365 struct stk_sio_buffer *fb;
366
367 dev = (struct stk_camera *) urb->context;
368
369 if (dev == NULL) {
370 STK_ERROR("isoc_handler called with NULL device !\n");
371 return;
372 }
373
374 if (urb->status == -ENOENT || urb->status == -ECONNRESET
375 || urb->status == -ESHUTDOWN) {
376 atomic_dec(&dev->urbs_used);
377 return;
378 }
379
380 spin_lock_irqsave(&dev->spinlock, flags);
381
382 if (urb->status != -EINPROGRESS && urb->status != 0) {
383 STK_ERROR("isoc_handler: urb->status == %d\n", urb->status);
384 goto resubmit;
385 }
386
387 if (list_empty(&dev->sio_avail)) {
388 /*FIXME Stop streaming after a while */
389 (void) (printk_ratelimit() &&
390 STK_ERROR("isoc_handler without available buffer!\n"));
391 goto resubmit;
392 }
393 fb = list_first_entry(&dev->sio_avail,
394 struct stk_sio_buffer, list);
395 fill = fb->buffer + fb->v4lbuf.bytesused;
396
397 for (i = 0; i < urb->number_of_packets; i++) {
398 if (urb->iso_frame_desc[i].status != 0) {
399 if (urb->iso_frame_desc[i].status != -EXDEV)
400 STK_ERROR("Frame %d has error %d\n", i,
401 urb->iso_frame_desc[i].status);
402 continue;
403 }
404 framelen = urb->iso_frame_desc[i].actual_length;
405 iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
406
407 if (framelen <= 4)
408 continue; /* no data */
409
410 /*
411 * we found something informational from there
412 * the isoc frames have to type of headers
413 * type1: 00 xx 00 00 or 20 xx 00 00
414 * type2: 80 xx 00 00 00 00 00 00 or a0 xx 00 00 00 00 00 00
415 * xx is a sequencer which has never been seen over 0x3f
416 * imho data written down looks like bayer, i see similarities
417 * after every 640 bytes
418 */
419 if (*iso_buf & 0x80) {
420 framelen -= 8;
421 iso_buf += 8;
422 /* This marks a new frame */
423 if (fb->v4lbuf.bytesused != 0
424 && fb->v4lbuf.bytesused != dev->frame_size) {
425 (void) (printk_ratelimit() &&
426 STK_ERROR("frame %d, "
427 "bytesused=%d, skipping\n",
428 i, fb->v4lbuf.bytesused));
429 fb->v4lbuf.bytesused = 0;
430 fill = fb->buffer;
431 } else if (fb->v4lbuf.bytesused == dev->frame_size) {
Jaime Velasco Juanb1855902008-07-22 12:28:36 -0300432 if (list_is_singular(&dev->sio_avail)) {
433 /* Always reuse the last buffer */
434 fb->v4lbuf.bytesused = 0;
435 fill = fb->buffer;
436 } else {
437 list_move_tail(dev->sio_avail.next,
438 &dev->sio_full);
439 wake_up(&dev->wait_frame);
440 fb = list_first_entry(&dev->sio_avail,
441 struct stk_sio_buffer, list);
442 fb->v4lbuf.bytesused = 0;
443 fill = fb->buffer;
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300444 }
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300445 }
446 } else {
447 framelen -= 4;
448 iso_buf += 4;
449 }
450
451 /* Our buffer is full !!! */
452 if (framelen + fb->v4lbuf.bytesused > dev->frame_size) {
453 (void) (printk_ratelimit() &&
454 STK_ERROR("Frame buffer overflow, lost sync\n"));
455 /*FIXME Do something here? */
456 continue;
457 }
458 spin_unlock_irqrestore(&dev->spinlock, flags);
459 memcpy(fill, iso_buf, framelen);
460 spin_lock_irqsave(&dev->spinlock, flags);
461 fill += framelen;
462
463 /* New size of our buffer */
464 fb->v4lbuf.bytesused += framelen;
465 }
466
467resubmit:
468 spin_unlock_irqrestore(&dev->spinlock, flags);
469 urb->dev = dev->udev;
470 ret = usb_submit_urb(urb, GFP_ATOMIC);
471 if (ret != 0) {
472 STK_ERROR("Error (%d) re-submitting urb in stk_isoc_handler.\n",
473 ret);
474 }
475}
476
477/* -------------------------------------------- */
478
479static int stk_prepare_iso(struct stk_camera *dev)
480{
481 void *kbuf;
482 int i, j;
483 struct urb *urb;
484 struct usb_device *udev;
485
486 if (dev == NULL)
487 return -ENXIO;
488 udev = dev->udev;
489
490 if (dev->isobufs)
491 STK_ERROR("isobufs already allocated. Bad\n");
492 else
493 dev->isobufs = kzalloc(MAX_ISO_BUFS * sizeof(*dev->isobufs),
494 GFP_KERNEL);
495 if (dev->isobufs == NULL) {
496 STK_ERROR("Unable to allocate iso buffers\n");
497 return -ENOMEM;
498 }
499 for (i = 0; i < MAX_ISO_BUFS; i++) {
500 if (dev->isobufs[i].data == NULL) {
501 kbuf = kzalloc(ISO_BUFFER_SIZE, GFP_KERNEL);
502 if (kbuf == NULL) {
503 STK_ERROR("Failed to allocate iso buffer %d\n",
504 i);
505 goto isobufs_out;
506 }
507 dev->isobufs[i].data = kbuf;
508 } else
509 STK_ERROR("isobuf data already allocated\n");
510 if (dev->isobufs[i].urb == NULL) {
511 urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
512 if (urb == NULL) {
513 STK_ERROR("Failed to allocate URB %d\n", i);
514 goto isobufs_out;
515 }
516 dev->isobufs[i].urb = urb;
517 } else {
518 STK_ERROR("Killing URB\n");
519 usb_kill_urb(dev->isobufs[i].urb);
520 urb = dev->isobufs[i].urb;
521 }
522 urb->interval = 1;
523 urb->dev = udev;
524 urb->pipe = usb_rcvisocpipe(udev, dev->isoc_ep);
525 urb->transfer_flags = URB_ISO_ASAP;
526 urb->transfer_buffer = dev->isobufs[i].data;
527 urb->transfer_buffer_length = ISO_BUFFER_SIZE;
528 urb->complete = stk_isoc_handler;
529 urb->context = dev;
530 urb->start_frame = 0;
531 urb->number_of_packets = ISO_FRAMES_PER_DESC;
532
533 for (j = 0; j < ISO_FRAMES_PER_DESC; j++) {
534 urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE;
535 urb->iso_frame_desc[j].length = ISO_MAX_FRAME_SIZE;
536 }
537 }
538 set_memallocd(dev);
539 return 0;
540
541isobufs_out:
542 for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].data; i++)
543 kfree(dev->isobufs[i].data);
544 for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].urb; i++)
545 usb_free_urb(dev->isobufs[i].urb);
546 kfree(dev->isobufs);
547 dev->isobufs = NULL;
548 return -ENOMEM;
549}
550
551static void stk_clean_iso(struct stk_camera *dev)
552{
553 int i;
554
555 if (dev == NULL || dev->isobufs == NULL)
556 return;
557
558 for (i = 0; i < MAX_ISO_BUFS; i++) {
559 struct urb *urb;
560
561 urb = dev->isobufs[i].urb;
562 if (urb) {
563 if (atomic_read(&dev->urbs_used))
564 usb_kill_urb(urb);
565 usb_free_urb(urb);
566 }
567 kfree(dev->isobufs[i].data);
568 }
569 kfree(dev->isobufs);
570 dev->isobufs = NULL;
571 unset_memallocd(dev);
572}
573
574static int stk_setup_siobuf(struct stk_camera *dev, int index)
575{
576 struct stk_sio_buffer *buf = dev->sio_bufs + index;
577 INIT_LIST_HEAD(&buf->list);
578 buf->v4lbuf.length = PAGE_ALIGN(dev->frame_size);
579 buf->buffer = vmalloc_user(buf->v4lbuf.length);
580 if (buf->buffer == NULL)
581 return -ENOMEM;
582 buf->mapcount = 0;
583 buf->dev = dev;
584 buf->v4lbuf.index = index;
585 buf->v4lbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
586 buf->v4lbuf.field = V4L2_FIELD_NONE;
587 buf->v4lbuf.memory = V4L2_MEMORY_MMAP;
588 buf->v4lbuf.m.offset = 2*index*buf->v4lbuf.length;
589 return 0;
590}
591
592static int stk_free_sio_buffers(struct stk_camera *dev)
593{
594 int i;
595 int nbufs;
596 unsigned long flags;
597 if (dev->n_sbufs == 0 || dev->sio_bufs == NULL)
598 return 0;
599 /*
600 * If any buffers are mapped, we cannot free them at all.
601 */
602 for (i = 0; i < dev->n_sbufs; i++) {
603 if (dev->sio_bufs[i].mapcount > 0)
604 return -EBUSY;
605 }
606 /*
607 * OK, let's do it.
608 */
609 spin_lock_irqsave(&dev->spinlock, flags);
610 INIT_LIST_HEAD(&dev->sio_avail);
611 INIT_LIST_HEAD(&dev->sio_full);
612 nbufs = dev->n_sbufs;
613 dev->n_sbufs = 0;
614 spin_unlock_irqrestore(&dev->spinlock, flags);
615 for (i = 0; i < nbufs; i++) {
616 if (dev->sio_bufs[i].buffer != NULL)
617 vfree(dev->sio_bufs[i].buffer);
618 }
619 kfree(dev->sio_bufs);
620 dev->sio_bufs = NULL;
621 return 0;
622}
623
624static int stk_prepare_sio_buffers(struct stk_camera *dev, unsigned n_sbufs)
625{
626 int i;
627 if (dev->sio_bufs != NULL)
628 STK_ERROR("sio_bufs already allocated\n");
629 else {
630 dev->sio_bufs = kzalloc(n_sbufs * sizeof(struct stk_sio_buffer),
631 GFP_KERNEL);
632 if (dev->sio_bufs == NULL)
633 return -ENOMEM;
634 for (i = 0; i < n_sbufs; i++) {
635 if (stk_setup_siobuf(dev, i))
636 return (dev->n_sbufs > 1)? 0 : -ENOMEM;
637 dev->n_sbufs = i+1;
638 }
639 }
640 return 0;
641}
642
643static int stk_allocate_buffers(struct stk_camera *dev, unsigned n_sbufs)
644{
645 int err;
646 err = stk_prepare_iso(dev);
647 if (err) {
648 stk_clean_iso(dev);
649 return err;
650 }
651 err = stk_prepare_sio_buffers(dev, n_sbufs);
652 if (err) {
653 stk_free_sio_buffers(dev);
654 return err;
655 }
656 return 0;
657}
658
659static void stk_free_buffers(struct stk_camera *dev)
660{
661 stk_clean_iso(dev);
662 stk_free_sio_buffers(dev);
663}
664/* -------------------------------------------- */
665
666/* v4l file operations */
667
668static int v4l_stk_open(struct inode *inode, struct file *fp)
669{
670 struct stk_camera *dev;
671 struct video_device *vdev;
672
673 vdev = video_devdata(fp);
674 dev = vdev_to_camera(vdev);
675
Hans Verkuild56dc612008-07-30 08:43:36 -0300676 lock_kernel();
677 if (dev == NULL || !is_present(dev)) {
678 unlock_kernel();
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300679 return -ENXIO;
Hans Verkuild56dc612008-07-30 08:43:36 -0300680 }
David Ellingsworth4aaec3e2008-09-21 04:12:03 -0300681 fp->private_data = dev;
Jaime Velasco Juan1fdd61c2008-01-27 12:24:59 -0300682 usb_autopm_get_interface(dev->interface);
Hans Verkuild56dc612008-07-30 08:43:36 -0300683 unlock_kernel();
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300684
685 return 0;
686}
687
688static int v4l_stk_release(struct inode *inode, struct file *fp)
689{
David Ellingsworth4aaec3e2008-09-21 04:12:03 -0300690 struct stk_camera *dev = fp->private_data;
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300691
692 if (dev->owner != fp) {
Jaime Velasco Juan1fdd61c2008-01-27 12:24:59 -0300693 usb_autopm_put_interface(dev->interface);
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300694 return 0;
695 }
696
697 stk_stop_stream(dev);
698
699 stk_free_buffers(dev);
700
701 dev->owner = NULL;
702
Jaime Velasco Juan1fdd61c2008-01-27 12:24:59 -0300703 usb_autopm_put_interface(dev->interface);
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300704
705 return 0;
706}
707
708static ssize_t v4l_stk_read(struct file *fp, char __user *buf,
709 size_t count, loff_t *f_pos)
710{
711 int i;
712 int ret;
713 unsigned long flags;
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300714 struct stk_sio_buffer *sbuf;
David Ellingsworth4aaec3e2008-09-21 04:12:03 -0300715 struct stk_camera *dev = fp->private_data;
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300716
717 if (dev == NULL)
718 return -EIO;
719
720 if (!is_present(dev))
721 return -EIO;
722 if (dev->owner && dev->owner != fp)
723 return -EBUSY;
724 dev->owner = fp;
725 if (!is_streaming(dev)) {
726 if (stk_initialise(dev)
727 || stk_allocate_buffers(dev, 3)
728 || stk_start_stream(dev))
729 return -ENOMEM;
730 spin_lock_irqsave(&dev->spinlock, flags);
731 for (i = 0; i < dev->n_sbufs; i++) {
732 list_add_tail(&dev->sio_bufs[i].list, &dev->sio_avail);
733 dev->sio_bufs[i].v4lbuf.flags = V4L2_BUF_FLAG_QUEUED;
734 }
735 spin_unlock_irqrestore(&dev->spinlock, flags);
736 }
737 if (*f_pos == 0) {
738 if (fp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full))
739 return -EWOULDBLOCK;
740 ret = wait_event_interruptible(dev->wait_frame,
741 !list_empty(&dev->sio_full) || !is_present(dev));
742 if (ret)
743 return ret;
744 if (!is_present(dev))
745 return -EIO;
746 }
747 if (count + *f_pos > dev->frame_size)
748 count = dev->frame_size - *f_pos;
749 spin_lock_irqsave(&dev->spinlock, flags);
750 if (list_empty(&dev->sio_full)) {
751 spin_unlock_irqrestore(&dev->spinlock, flags);
752 STK_ERROR("BUG: No siobufs ready\n");
753 return 0;
754 }
755 sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list);
756 spin_unlock_irqrestore(&dev->spinlock, flags);
757
758 if (copy_to_user(buf, sbuf->buffer + *f_pos, count))
759 return -EFAULT;
760
761 *f_pos += count;
762
763 if (*f_pos >= dev->frame_size) {
764 *f_pos = 0;
765 spin_lock_irqsave(&dev->spinlock, flags);
766 list_move_tail(&sbuf->list, &dev->sio_avail);
767 spin_unlock_irqrestore(&dev->spinlock, flags);
768 }
769 return count;
770}
771
772static unsigned int v4l_stk_poll(struct file *fp, poll_table *wait)
773{
David Ellingsworth4aaec3e2008-09-21 04:12:03 -0300774 struct stk_camera *dev = fp->private_data;
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300775
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300776 if (dev == NULL)
777 return -ENODEV;
778
779 poll_wait(fp, &dev->wait_frame, wait);
780
781 if (!is_present(dev))
782 return POLLERR;
783
784 if (!list_empty(&dev->sio_full))
785 return (POLLIN | POLLRDNORM);
786
787 return 0;
788}
789
790
791static void stk_v4l_vm_open(struct vm_area_struct *vma)
792{
793 struct stk_sio_buffer *sbuf = vma->vm_private_data;
794 sbuf->mapcount++;
795}
796static void stk_v4l_vm_close(struct vm_area_struct *vma)
797{
798 struct stk_sio_buffer *sbuf = vma->vm_private_data;
799 sbuf->mapcount--;
800 if (sbuf->mapcount == 0)
801 sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_MAPPED;
802}
803static struct vm_operations_struct stk_v4l_vm_ops = {
804 .open = stk_v4l_vm_open,
805 .close = stk_v4l_vm_close
806};
807
808static int v4l_stk_mmap(struct file *fp, struct vm_area_struct *vma)
809{
810 unsigned int i;
811 int ret;
812 unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
David Ellingsworth4aaec3e2008-09-21 04:12:03 -0300813 struct stk_camera *dev = fp->private_data;
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300814 struct stk_sio_buffer *sbuf = NULL;
815
816 if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED))
817 return -EINVAL;
818
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300819 for (i = 0; i < dev->n_sbufs; i++) {
820 if (dev->sio_bufs[i].v4lbuf.m.offset == offset) {
821 sbuf = dev->sio_bufs + i;
822 break;
823 }
824 }
825 if (sbuf == NULL)
826 return -EINVAL;
827 ret = remap_vmalloc_range(vma, sbuf->buffer, 0);
828 if (ret)
829 return ret;
830 vma->vm_flags |= VM_DONTEXPAND;
831 vma->vm_private_data = sbuf;
832 vma->vm_ops = &stk_v4l_vm_ops;
833 sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_MAPPED;
834 stk_v4l_vm_open(vma);
835 return 0;
836}
837
838/* v4l ioctl handlers */
839
840static int stk_vidioc_querycap(struct file *filp,
841 void *priv, struct v4l2_capability *cap)
842{
843 strcpy(cap->driver, "stk");
844 strcpy(cap->card, "stk");
845 cap->version = DRIVER_VERSION_NUM;
846
847 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE
848 | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
849 return 0;
850}
851
852static int stk_vidioc_enum_input(struct file *filp,
853 void *priv, struct v4l2_input *input)
854{
855 if (input->index != 0)
856 return -EINVAL;
857
858 strcpy(input->name, "Syntek USB Camera");
859 input->type = V4L2_INPUT_TYPE_CAMERA;
860 return 0;
861}
862
863
864static int stk_vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
865{
866 *i = 0;
867 return 0;
868}
869
870static int stk_vidioc_s_input(struct file *filp, void *priv, unsigned int i)
871{
872 if (i != 0)
873 return -EINVAL;
874 else
875 return 0;
876}
877
878/* from vivi.c */
879static int stk_vidioc_s_std(struct file *filp, void *priv, v4l2_std_id *a)
880{
881 return 0;
882}
883
884/* List of all V4Lv2 controls supported by the driver */
885static struct v4l2_queryctrl stk_controls[] = {
886 {
887 .id = V4L2_CID_BRIGHTNESS,
888 .type = V4L2_CTRL_TYPE_INTEGER,
889 .name = "Brightness",
890 .minimum = 0,
891 .maximum = 0xffff,
892 .step = 0x0100,
893 .default_value = 0x6000,
894 },
895 /*TODO: get more controls to work */
896};
897
898static int stk_vidioc_queryctrl(struct file *filp,
899 void *priv, struct v4l2_queryctrl *c)
900{
901 int i;
902 int nbr;
903 nbr = ARRAY_SIZE(stk_controls);
904
905 for (i = 0; i < nbr; i++) {
906 if (stk_controls[i].id == c->id) {
907 memcpy(c, &stk_controls[i],
908 sizeof(struct v4l2_queryctrl));
909 return 0;
910 }
911 }
912 return -EINVAL;
913}
914
915static int stk_vidioc_g_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 c->value = dev->vsettings.brightness;
922 break;
923 default:
924 return -EINVAL;
925 }
926 return 0;
927}
928
929static int stk_vidioc_s_ctrl(struct file *filp,
930 void *priv, struct v4l2_control *c)
931{
932 struct stk_camera *dev = priv;
933 switch (c->id) {
934 case V4L2_CID_BRIGHTNESS:
935 dev->vsettings.brightness = c->value;
936 return stk_sensor_set_brightness(dev, c->value >> 8);
937 default:
938 return -EINVAL;
939 }
940 return 0;
941}
942
943
Hans Verkuil78b526a2008-05-28 12:16:41 -0300944static int stk_vidioc_enum_fmt_vid_cap(struct file *filp,
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300945 void *priv, struct v4l2_fmtdesc *fmtd)
946{
947 fmtd->flags = 0;
948
949 switch (fmtd->index) {
950 case 0:
951 fmtd->pixelformat = V4L2_PIX_FMT_RGB565;
952 strcpy(fmtd->description, "r5g6b5");
953 break;
954 case 1:
955 fmtd->pixelformat = V4L2_PIX_FMT_RGB565X;
956 strcpy(fmtd->description, "r5g6b5BE");
957 break;
958 case 2:
959 fmtd->pixelformat = V4L2_PIX_FMT_UYVY;
960 strcpy(fmtd->description, "yuv4:2:2");
961 break;
962 case 3:
963 fmtd->pixelformat = V4L2_PIX_FMT_SBGGR8;
964 strcpy(fmtd->description, "Raw bayer");
965 break;
Jaime Velasco Juan1112fb62008-01-27 12:24:58 -0300966 case 4:
967 fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
968 strcpy(fmtd->description, "yuv4:2:2");
969 break;
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300970 default:
971 return -EINVAL;
972 }
973 return 0;
974}
975
976static struct stk_size {
977 unsigned w;
978 unsigned h;
979 enum stk_mode m;
980} stk_sizes[] = {
981 { .w = 1280, .h = 1024, .m = MODE_SXGA, },
982 { .w = 640, .h = 480, .m = MODE_VGA, },
983 { .w = 352, .h = 288, .m = MODE_CIF, },
984 { .w = 320, .h = 240, .m = MODE_QVGA, },
985 { .w = 176, .h = 144, .m = MODE_QCIF, },
986};
987
Hans Verkuil78b526a2008-05-28 12:16:41 -0300988static int stk_vidioc_g_fmt_vid_cap(struct file *filp,
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -0300989 void *priv, struct v4l2_format *f)
990{
991 struct v4l2_pix_format *pix_format = &f->fmt.pix;
992 struct stk_camera *dev = priv;
993 int i;
994
995 for (i = 0; i < ARRAY_SIZE(stk_sizes)
996 && stk_sizes[i].m != dev->vsettings.mode;
997 i++);
998 if (i == ARRAY_SIZE(stk_sizes)) {
999 STK_ERROR("ERROR: mode invalid\n");
1000 return -EINVAL;
1001 }
1002 pix_format->width = stk_sizes[i].w;
1003 pix_format->height = stk_sizes[i].h;
1004 pix_format->field = V4L2_FIELD_NONE;
1005 pix_format->colorspace = V4L2_COLORSPACE_SRGB;
1006 pix_format->priv = 0;
1007 pix_format->pixelformat = dev->vsettings.palette;
1008 if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8)
1009 pix_format->bytesperline = pix_format->width;
1010 else
1011 pix_format->bytesperline = 2 * pix_format->width;
1012 pix_format->sizeimage = pix_format->bytesperline
1013 * pix_format->height;
1014 return 0;
1015}
1016
Hans Verkuil78b526a2008-05-28 12:16:41 -03001017static int stk_vidioc_try_fmt_vid_cap(struct file *filp,
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001018 void *priv, struct v4l2_format *fmtd)
1019{
1020 int i;
1021 switch (fmtd->fmt.pix.pixelformat) {
1022 case V4L2_PIX_FMT_RGB565:
1023 case V4L2_PIX_FMT_RGB565X:
1024 case V4L2_PIX_FMT_UYVY:
Jaime Velasco Juan1112fb62008-01-27 12:24:58 -03001025 case V4L2_PIX_FMT_YUYV:
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001026 case V4L2_PIX_FMT_SBGGR8:
1027 break;
1028 default:
1029 return -EINVAL;
1030 }
1031 for (i = 1; i < ARRAY_SIZE(stk_sizes); i++) {
1032 if (fmtd->fmt.pix.width > stk_sizes[i].w)
1033 break;
1034 }
1035 if (i == ARRAY_SIZE(stk_sizes)
1036 || (abs(fmtd->fmt.pix.width - stk_sizes[i-1].w)
1037 < abs(fmtd->fmt.pix.width - stk_sizes[i].w))) {
1038 fmtd->fmt.pix.height = stk_sizes[i-1].h;
1039 fmtd->fmt.pix.width = stk_sizes[i-1].w;
1040 fmtd->fmt.pix.priv = i - 1;
1041 } else {
1042 fmtd->fmt.pix.height = stk_sizes[i].h;
1043 fmtd->fmt.pix.width = stk_sizes[i].w;
1044 fmtd->fmt.pix.priv = i;
1045 }
1046
1047 fmtd->fmt.pix.field = V4L2_FIELD_NONE;
1048 fmtd->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
1049 if (fmtd->fmt.pix.pixelformat == V4L2_PIX_FMT_SBGGR8)
1050 fmtd->fmt.pix.bytesperline = fmtd->fmt.pix.width;
1051 else
1052 fmtd->fmt.pix.bytesperline = 2 * fmtd->fmt.pix.width;
1053 fmtd->fmt.pix.sizeimage = fmtd->fmt.pix.bytesperline
1054 * fmtd->fmt.pix.height;
1055 return 0;
1056}
1057
Jaime Velasco Juan1fdd61c2008-01-27 12:24:59 -03001058static int stk_setup_format(struct stk_camera *dev)
1059{
1060 int i = 0;
1061 int depth;
1062 if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8)
1063 depth = 1;
1064 else
1065 depth = 2;
1066 while (stk_sizes[i].m != dev->vsettings.mode
1067 && i < ARRAY_SIZE(stk_sizes))
1068 i++;
1069 if (i == ARRAY_SIZE(stk_sizes)) {
Harvey Harrison7e28adb2008-04-08 23:20:00 -03001070 STK_ERROR("Something is broken in %s\n", __func__);
Jaime Velasco Juan1fdd61c2008-01-27 12:24:59 -03001071 return -EFAULT;
1072 }
1073 /* This registers controls some timings, not sure of what. */
1074 stk_camera_write_reg(dev, 0x001b, 0x0e);
1075 if (dev->vsettings.mode == MODE_SXGA)
1076 stk_camera_write_reg(dev, 0x001c, 0x0e);
1077 else
1078 stk_camera_write_reg(dev, 0x001c, 0x46);
1079 /*
1080 * Registers 0x0115 0x0114 are the size of each line (bytes),
1081 * regs 0x0117 0x0116 are the heigth of the image.
1082 */
1083 stk_camera_write_reg(dev, 0x0115,
1084 ((stk_sizes[i].w * depth) >> 8) & 0xff);
1085 stk_camera_write_reg(dev, 0x0114,
1086 (stk_sizes[i].w * depth) & 0xff);
1087 stk_camera_write_reg(dev, 0x0117,
1088 (stk_sizes[i].h >> 8) & 0xff);
1089 stk_camera_write_reg(dev, 0x0116,
1090 stk_sizes[i].h & 0xff);
1091 return stk_sensor_configure(dev);
1092}
1093
Hans Verkuil78b526a2008-05-28 12:16:41 -03001094static int stk_vidioc_s_fmt_vid_cap(struct file *filp,
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001095 void *priv, struct v4l2_format *fmtd)
1096{
1097 int ret;
1098 struct stk_camera *dev = priv;
1099
1100 if (dev == NULL)
1101 return -ENODEV;
1102 if (!is_present(dev))
1103 return -ENODEV;
1104 if (is_streaming(dev))
1105 return -EBUSY;
1106 if (dev->owner && dev->owner != filp)
1107 return -EBUSY;
Hans Verkuil78b526a2008-05-28 12:16:41 -03001108 ret = stk_vidioc_try_fmt_vid_cap(filp, priv, fmtd);
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001109 if (ret)
1110 return ret;
Jaime Velasco Juan1fdd61c2008-01-27 12:24:59 -03001111 dev->owner = filp;
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001112
1113 dev->vsettings.palette = fmtd->fmt.pix.pixelformat;
1114 stk_free_buffers(dev);
1115 dev->frame_size = fmtd->fmt.pix.sizeimage;
1116 dev->vsettings.mode = stk_sizes[fmtd->fmt.pix.priv].m;
1117
1118 stk_initialise(dev);
Jaime Velasco Juan1fdd61c2008-01-27 12:24:59 -03001119 return stk_setup_format(dev);
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001120}
1121
1122static int stk_vidioc_reqbufs(struct file *filp,
1123 void *priv, struct v4l2_requestbuffers *rb)
1124{
1125 struct stk_camera *dev = priv;
1126
1127 if (dev == NULL)
1128 return -ENODEV;
1129 if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1130 return -EINVAL;
1131 if (rb->memory != V4L2_MEMORY_MMAP)
1132 return -EINVAL;
1133 if (is_streaming(dev)
1134 || (dev->owner && dev->owner != filp))
1135 return -EBUSY;
1136 dev->owner = filp;
1137
1138 /*FIXME If they ask for zero, we must stop streaming and free */
1139 if (rb->count < 3)
1140 rb->count = 3;
1141 /* Arbitrary limit */
1142 else if (rb->count > 5)
1143 rb->count = 5;
1144
1145 stk_allocate_buffers(dev, rb->count);
1146 rb->count = dev->n_sbufs;
1147 return 0;
1148}
1149
1150static int stk_vidioc_querybuf(struct file *filp,
1151 void *priv, struct v4l2_buffer *buf)
1152{
1153 int index;
1154 struct stk_camera *dev = priv;
1155 struct stk_sio_buffer *sbuf;
1156
1157 if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1158 return -EINVAL;
1159
1160 index = buf->index;
1161
1162 if (index < 0 || index >= dev->n_sbufs)
1163 return -EINVAL;
1164 sbuf = dev->sio_bufs + buf->index;
1165 *buf = sbuf->v4lbuf;
1166 return 0;
1167}
1168
1169static int stk_vidioc_qbuf(struct file *filp,
1170 void *priv, struct v4l2_buffer *buf)
1171{
1172 struct stk_camera *dev = priv;
1173 struct stk_sio_buffer *sbuf;
1174 unsigned long flags;
1175 if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1176 return -EINVAL;
1177
1178 if (buf->memory != V4L2_MEMORY_MMAP)
1179 return -EINVAL;
1180
1181 if (buf->index < 0 || buf->index >= dev->n_sbufs)
1182 return -EINVAL;
1183 sbuf = dev->sio_bufs + buf->index;
1184 if (sbuf->v4lbuf.flags & V4L2_BUF_FLAG_QUEUED)
1185 return 0;
1186 sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_QUEUED;
1187 sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_DONE;
1188 spin_lock_irqsave(&dev->spinlock, flags);
1189 list_add_tail(&sbuf->list, &dev->sio_avail);
1190 *buf = sbuf->v4lbuf;
1191 spin_unlock_irqrestore(&dev->spinlock, flags);
1192 return 0;
1193}
1194
1195static int stk_vidioc_dqbuf(struct file *filp,
1196 void *priv, struct v4l2_buffer *buf)
1197{
1198 struct stk_camera *dev = priv;
1199 struct stk_sio_buffer *sbuf;
1200 unsigned long flags;
1201 int ret;
1202
1203 if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE
1204 || !is_streaming(dev))
1205 return -EINVAL;
1206
1207 if (filp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full))
1208 return -EWOULDBLOCK;
1209 ret = wait_event_interruptible(dev->wait_frame,
1210 !list_empty(&dev->sio_full) || !is_present(dev));
1211 if (ret)
1212 return ret;
1213 if (!is_present(dev))
1214 return -EIO;
1215
1216 spin_lock_irqsave(&dev->spinlock, flags);
1217 sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list);
1218 list_del_init(&sbuf->list);
1219 spin_unlock_irqrestore(&dev->spinlock, flags);
1220 sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_QUEUED;
1221 sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_DONE;
1222 sbuf->v4lbuf.sequence = ++dev->sequence;
1223 do_gettimeofday(&sbuf->v4lbuf.timestamp);
1224
1225 *buf = sbuf->v4lbuf;
1226 return 0;
1227}
1228
1229static int stk_vidioc_streamon(struct file *filp,
1230 void *priv, enum v4l2_buf_type type)
1231{
1232 struct stk_camera *dev = priv;
1233 if (is_streaming(dev))
1234 return 0;
1235 if (dev->sio_bufs == NULL)
1236 return -EINVAL;
1237 dev->sequence = 0;
1238 return stk_start_stream(dev);
1239}
1240
1241static int stk_vidioc_streamoff(struct file *filp,
1242 void *priv, enum v4l2_buf_type type)
1243{
1244 struct stk_camera *dev = priv;
1245 unsigned long flags;
1246 int i;
1247 stk_stop_stream(dev);
1248 spin_lock_irqsave(&dev->spinlock, flags);
1249 INIT_LIST_HEAD(&dev->sio_avail);
1250 INIT_LIST_HEAD(&dev->sio_full);
1251 for (i = 0; i < dev->n_sbufs; i++) {
1252 INIT_LIST_HEAD(&dev->sio_bufs[i].list);
1253 dev->sio_bufs[i].v4lbuf.flags = 0;
1254 }
1255 spin_unlock_irqrestore(&dev->spinlock, flags);
1256 return 0;
1257}
1258
1259
1260static int stk_vidioc_g_parm(struct file *filp,
1261 void *priv, struct v4l2_streamparm *sp)
1262{
1263 if (sp->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1264 return -EINVAL;
1265
1266 sp->parm.capture.capability = 0;
1267 sp->parm.capture.capturemode = 0;
1268 /*FIXME This is not correct */
1269 sp->parm.capture.timeperframe.numerator = 1;
1270 sp->parm.capture.timeperframe.denominator = 30;
1271 sp->parm.capture.readbuffers = 2;
1272 sp->parm.capture.extendedmode = 0;
1273 return 0;
1274}
1275
1276static struct file_operations v4l_stk_fops = {
1277 .owner = THIS_MODULE,
1278 .open = v4l_stk_open,
1279 .release = v4l_stk_release,
1280 .read = v4l_stk_read,
1281 .poll = v4l_stk_poll,
1282 .mmap = v4l_stk_mmap,
1283 .ioctl = video_ioctl2,
Jaime Velasco Juan2de3a5a2008-01-27 12:25:00 -03001284#ifdef CONFIG_COMPAT
1285 .compat_ioctl = v4l_compat_ioctl32,
1286#endif
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001287 .llseek = no_llseek
1288};
1289
Hans Verkuila3998102008-07-21 02:57:38 -03001290static const struct v4l2_ioctl_ops v4l_stk_ioctl_ops = {
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001291 .vidioc_querycap = stk_vidioc_querycap,
Hans Verkuil78b526a2008-05-28 12:16:41 -03001292 .vidioc_enum_fmt_vid_cap = stk_vidioc_enum_fmt_vid_cap,
1293 .vidioc_try_fmt_vid_cap = stk_vidioc_try_fmt_vid_cap,
1294 .vidioc_s_fmt_vid_cap = stk_vidioc_s_fmt_vid_cap,
1295 .vidioc_g_fmt_vid_cap = stk_vidioc_g_fmt_vid_cap,
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001296 .vidioc_enum_input = stk_vidioc_enum_input,
1297 .vidioc_s_input = stk_vidioc_s_input,
1298 .vidioc_g_input = stk_vidioc_g_input,
1299 .vidioc_s_std = stk_vidioc_s_std,
1300 .vidioc_reqbufs = stk_vidioc_reqbufs,
1301 .vidioc_querybuf = stk_vidioc_querybuf,
1302 .vidioc_qbuf = stk_vidioc_qbuf,
1303 .vidioc_dqbuf = stk_vidioc_dqbuf,
1304 .vidioc_streamon = stk_vidioc_streamon,
1305 .vidioc_streamoff = stk_vidioc_streamoff,
1306 .vidioc_queryctrl = stk_vidioc_queryctrl,
1307 .vidioc_g_ctrl = stk_vidioc_g_ctrl,
1308 .vidioc_s_ctrl = stk_vidioc_s_ctrl,
1309 .vidioc_g_parm = stk_vidioc_g_parm,
1310};
1311
Hans Verkuila3998102008-07-21 02:57:38 -03001312static void stk_v4l_dev_release(struct video_device *vd)
1313{
David Ellingsworth4aaec3e2008-09-21 04:12:03 -03001314 struct stk_camera *dev = vdev_to_camera(vd);
1315
1316 if (dev->sio_bufs != NULL || dev->isobufs != NULL)
1317 STK_ERROR("We are leaking memory\n");
1318 usb_put_intf(dev->interface);
1319 kfree(dev);
Hans Verkuila3998102008-07-21 02:57:38 -03001320}
1321
1322static struct video_device stk_v4l_data = {
1323 .name = "stkwebcam",
Hans Verkuila3998102008-07-21 02:57:38 -03001324 .minor = -1,
1325 .tvnorms = V4L2_STD_UNKNOWN,
1326 .current_norm = V4L2_STD_UNKNOWN,
1327 .fops = &v4l_stk_fops,
1328 .ioctl_ops = &v4l_stk_ioctl_ops,
1329 .release = stk_v4l_dev_release,
1330};
1331
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001332
1333static int stk_register_video_device(struct stk_camera *dev)
1334{
1335 int err;
1336
1337 dev->vdev = stk_v4l_data;
1338 dev->vdev.debug = debug;
Hans Verkuil5e85e732008-07-20 06:31:39 -03001339 dev->vdev.parent = &dev->interface->dev;
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001340 err = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1);
1341 if (err)
1342 STK_ERROR("v4l registration failed\n");
1343 else
1344 STK_INFO("Syntek USB2.0 Camera is now controlling video device"
1345 " /dev/video%d\n", dev->vdev.minor);
1346 return err;
1347}
1348
1349
1350/* USB Stuff */
1351
1352static int stk_camera_probe(struct usb_interface *interface,
1353 const struct usb_device_id *id)
1354{
1355 int i;
David Ellingsworth4aaec3e2008-09-21 04:12:03 -03001356 int err = 0;
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001357
1358 struct stk_camera *dev = NULL;
1359 struct usb_device *udev = interface_to_usbdev(interface);
1360 struct usb_host_interface *iface_desc;
1361 struct usb_endpoint_descriptor *endpoint;
1362
1363 dev = kzalloc(sizeof(struct stk_camera), GFP_KERNEL);
1364 if (dev == NULL) {
1365 STK_ERROR("Out of memory !\n");
1366 return -ENOMEM;
1367 }
1368
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001369 spin_lock_init(&dev->spinlock);
1370 init_waitqueue_head(&dev->wait_frame);
1371
1372 dev->udev = udev;
1373 dev->interface = interface;
1374 usb_get_intf(interface);
1375
1376 dev->vsettings.vflip = vflip;
1377 dev->vsettings.hflip = hflip;
1378 dev->n_sbufs = 0;
1379 set_present(dev);
1380
1381 /* Set up the endpoint information
1382 * use only the first isoc-in endpoint
1383 * for the current alternate setting */
1384 iface_desc = interface->cur_altsetting;
1385
1386 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
1387 endpoint = &iface_desc->endpoint[i].desc;
1388
1389 if (!dev->isoc_ep
1390 && ((endpoint->bEndpointAddress
1391 & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
1392 && ((endpoint->bmAttributes
1393 & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_ISOC)) {
1394 /* we found an isoc in endpoint */
1395 dev->isoc_ep = (endpoint->bEndpointAddress & 0xF);
1396 break;
1397 }
1398 }
1399 if (!dev->isoc_ep) {
1400 STK_ERROR("Could not find isoc-in endpoint");
David Ellingsworth4aaec3e2008-09-21 04:12:03 -03001401 err = -ENODEV;
1402 goto error;
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001403 }
1404 dev->vsettings.brightness = 0x7fff;
1405 dev->vsettings.palette = V4L2_PIX_FMT_RGB565;
1406 dev->vsettings.mode = MODE_VGA;
Jaime Velasco Juan1112fb62008-01-27 12:24:58 -03001407 dev->frame_size = 640 * 480 * 2;
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001408
1409 INIT_LIST_HEAD(&dev->sio_avail);
1410 INIT_LIST_HEAD(&dev->sio_full);
1411
1412 usb_set_intfdata(interface, dev);
1413
1414 err = stk_register_video_device(dev);
1415 if (err) {
David Ellingsworth4aaec3e2008-09-21 04:12:03 -03001416 goto error;
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001417 }
1418
1419 stk_create_sysfs_files(&dev->vdev);
Jaime Velasco Juan1fdd61c2008-01-27 12:24:59 -03001420 usb_autopm_enable(dev->interface);
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001421
1422 return 0;
David Ellingsworth4aaec3e2008-09-21 04:12:03 -03001423
1424error:
1425 kfree(dev);
1426 return err;
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001427}
1428
1429static void stk_camera_disconnect(struct usb_interface *interface)
1430{
1431 struct stk_camera *dev = usb_get_intfdata(interface);
1432
1433 usb_set_intfdata(interface, NULL);
1434 unset_present(dev);
1435
1436 wake_up_interruptible(&dev->wait_frame);
1437 stk_remove_sysfs_files(&dev->vdev);
1438
David Ellingsworth4aaec3e2008-09-21 04:12:03 -03001439 STK_INFO("Syntek USB2.0 Camera release resources"
1440 "video device /dev/video%d\n", dev->vdev.minor);
1441
1442 video_unregister_device(&dev->vdev);
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001443}
1444
Jaime Velasco Juan1fdd61c2008-01-27 12:24:59 -03001445#ifdef CONFIG_PM
Adrian Bunk4d34dcc2008-04-22 14:42:13 -03001446static int stk_camera_suspend(struct usb_interface *intf, pm_message_t message)
Jaime Velasco Juan1fdd61c2008-01-27 12:24:59 -03001447{
1448 struct stk_camera *dev = usb_get_intfdata(intf);
1449 if (is_streaming(dev)) {
1450 stk_stop_stream(dev);
1451 /* yes, this is ugly */
1452 set_streaming(dev);
1453 }
1454 return 0;
1455}
1456
Adrian Bunk4d34dcc2008-04-22 14:42:13 -03001457static int stk_camera_resume(struct usb_interface *intf)
Jaime Velasco Juan1fdd61c2008-01-27 12:24:59 -03001458{
1459 struct stk_camera *dev = usb_get_intfdata(intf);
1460 if (!is_initialised(dev))
1461 return 0;
1462 unset_initialised(dev);
1463 stk_initialise(dev);
1464 stk_setup_format(dev);
1465 if (is_streaming(dev))
1466 stk_start_stream(dev);
1467 return 0;
1468}
1469#endif
1470
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001471static struct usb_driver stk_camera_driver = {
1472 .name = "stkwebcam",
1473 .probe = stk_camera_probe,
1474 .disconnect = stk_camera_disconnect,
1475 .id_table = stkwebcam_table,
Jaime Velasco Juan1fdd61c2008-01-27 12:24:59 -03001476#ifdef CONFIG_PM
1477 .suspend = stk_camera_suspend,
1478 .resume = stk_camera_resume,
1479#endif
Jaime Velasco Juanec16dae2008-01-12 06:48:14 -03001480};
1481
1482
1483static int __init stk_camera_init(void)
1484{
1485 int result;
1486
1487 result = usb_register(&stk_camera_driver);
1488 if (result)
1489 STK_ERROR("usb_register failed ! Error number %d\n", result);
1490
1491
1492 return result;
1493}
1494
1495static void __exit stk_camera_exit(void)
1496{
1497 usb_deregister(&stk_camera_driver);
1498}
1499
1500module_init(stk_camera_init);
1501module_exit(stk_camera_exit);
1502
1503