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