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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> | |
ec16dae5 JVJ |
30 | |
31 | #include <linux/usb.h> | |
ef69c8e8 | 32 | #include <linux/mm.h> |
387d4477 | 33 | #include <linux/vmalloc.h> |
ec16dae5 JVJ |
34 | #include <linux/videodev2.h> |
35 | #include <media/v4l2-common.h> | |
35ea11ff | 36 | #include <media/v4l2-ioctl.h> |
ec16dae5 JVJ |
37 | |
38 | #include "stk-webcam.h" | |
39 | ||
40 | ||
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 | ||
ec16dae5 JVJ |
67 | /* |
68 | * Basic stuff | |
69 | */ | |
70 | int stk_camera_write_reg(struct stk_camera *dev, u16 index, u8 value) | |
71 | { | |
72 | struct usb_device *udev = dev->udev; | |
73 | int ret; | |
74 | ||
75 | ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), | |
76 | 0x01, | |
77 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
78 | value, | |
79 | index, | |
80 | NULL, | |
81 | 0, | |
82 | 500); | |
83 | if (ret < 0) | |
84 | return ret; | |
85 | else | |
86 | return 0; | |
87 | } | |
88 | ||
89 | int stk_camera_read_reg(struct stk_camera *dev, u16 index, int *value) | |
90 | { | |
91 | struct usb_device *udev = dev->udev; | |
92 | int ret; | |
93 | ||
94 | ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), | |
95 | 0x00, | |
96 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
97 | 0x00, | |
98 | index, | |
99 | (u8 *) value, | |
100 | sizeof(u8), | |
101 | 500); | |
102 | if (ret < 0) | |
103 | return ret; | |
104 | else | |
105 | return 0; | |
106 | } | |
107 | ||
108 | static int stk_start_stream(struct stk_camera *dev) | |
109 | { | |
110 | int value; | |
111 | int i, ret; | |
112 | int value_116, value_117; | |
113 | ||
114 | if (!is_present(dev)) | |
115 | return -ENODEV; | |
116 | if (!is_memallocd(dev) || !is_initialised(dev)) { | |
117 | STK_ERROR("FIXME: Buffers are not allocated\n"); | |
118 | return -EFAULT; | |
119 | } | |
120 | ret = usb_set_interface(dev->udev, 0, 5); | |
121 | ||
122 | if (ret < 0) | |
123 | STK_ERROR("usb_set_interface failed !\n"); | |
124 | if (stk_sensor_wakeup(dev)) | |
125 | STK_ERROR("error awaking the sensor\n"); | |
126 | ||
127 | stk_camera_read_reg(dev, 0x0116, &value_116); | |
128 | stk_camera_read_reg(dev, 0x0117, &value_117); | |
129 | ||
130 | stk_camera_write_reg(dev, 0x0116, 0x0000); | |
131 | stk_camera_write_reg(dev, 0x0117, 0x0000); | |
132 | ||
133 | stk_camera_read_reg(dev, 0x0100, &value); | |
134 | stk_camera_write_reg(dev, 0x0100, value | 0x80); | |
135 | ||
136 | stk_camera_write_reg(dev, 0x0116, value_116); | |
137 | stk_camera_write_reg(dev, 0x0117, value_117); | |
138 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
139 | if (dev->isobufs[i].urb) { | |
140 | ret = usb_submit_urb(dev->isobufs[i].urb, GFP_KERNEL); | |
141 | atomic_inc(&dev->urbs_used); | |
142 | if (ret) | |
143 | return ret; | |
144 | } | |
145 | } | |
146 | set_streaming(dev); | |
147 | return 0; | |
148 | } | |
149 | ||
150 | static int stk_stop_stream(struct stk_camera *dev) | |
151 | { | |
152 | int value; | |
153 | int i; | |
154 | if (is_present(dev)) { | |
155 | stk_camera_read_reg(dev, 0x0100, &value); | |
156 | stk_camera_write_reg(dev, 0x0100, value & ~0x80); | |
157 | if (dev->isobufs != NULL) { | |
158 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
159 | if (dev->isobufs[i].urb) | |
160 | usb_kill_urb(dev->isobufs[i].urb); | |
161 | } | |
162 | } | |
163 | unset_streaming(dev); | |
164 | ||
165 | if (usb_set_interface(dev->udev, 0, 0)) | |
166 | STK_ERROR("usb_set_interface failed !\n"); | |
167 | if (stk_sensor_sleep(dev)) | |
168 | STK_ERROR("error suspending the sensor\n"); | |
169 | } | |
170 | return 0; | |
171 | } | |
172 | ||
173 | /* | |
174 | * This seems to be the shortest init sequence we | |
175 | * must do in order to find the sensor | |
176 | * Bit 5 of reg. 0x0000 here is important, when reset to 0 the sensor | |
177 | * is also reset. Maybe powers down it? | |
178 | * Rest of values don't make a difference | |
179 | */ | |
180 | ||
181 | static struct regval stk1125_initvals[] = { | |
182 | /*TODO: What means this sequence? */ | |
183 | {0x0000, 0x24}, | |
184 | {0x0100, 0x21}, | |
185 | {0x0002, 0x68}, | |
186 | {0x0003, 0x80}, | |
187 | {0x0005, 0x00}, | |
188 | {0x0007, 0x03}, | |
189 | {0x000d, 0x00}, | |
190 | {0x000f, 0x02}, | |
191 | {0x0300, 0x12}, | |
192 | {0x0350, 0x41}, | |
193 | {0x0351, 0x00}, | |
194 | {0x0352, 0x00}, | |
195 | {0x0353, 0x00}, | |
196 | {0x0018, 0x10}, | |
197 | {0x0019, 0x00}, | |
198 | {0x001b, 0x0e}, | |
199 | {0x001c, 0x46}, | |
200 | {0x0300, 0x80}, | |
201 | {0x001a, 0x04}, | |
202 | {0x0110, 0x00}, | |
203 | {0x0111, 0x00}, | |
204 | {0x0112, 0x00}, | |
205 | {0x0113, 0x00}, | |
206 | ||
207 | {0xffff, 0xff}, | |
208 | }; | |
209 | ||
210 | ||
211 | static int stk_initialise(struct stk_camera *dev) | |
212 | { | |
213 | struct regval *rv; | |
214 | int ret; | |
215 | if (!is_present(dev)) | |
216 | return -ENODEV; | |
217 | if (is_initialised(dev)) | |
218 | return 0; | |
219 | rv = stk1125_initvals; | |
220 | while (rv->reg != 0xffff) { | |
221 | ret = stk_camera_write_reg(dev, rv->reg, rv->val); | |
222 | if (ret) | |
223 | return ret; | |
224 | rv++; | |
225 | } | |
226 | if (stk_sensor_init(dev) == 0) { | |
227 | set_initialised(dev); | |
228 | return 0; | |
229 | } else | |
230 | return -1; | |
231 | } | |
232 | ||
ef69c8e8 MCC |
233 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
234 | ||
ec16dae5 JVJ |
235 | /* sysfs functions */ |
236 | /*FIXME cleanup this */ | |
237 | ||
238 | static ssize_t show_brightness(struct device *class, | |
239 | struct device_attribute *attr, char *buf) | |
240 | { | |
241 | struct video_device *vdev = to_video_device(class); | |
242 | struct stk_camera *dev = vdev_to_camera(vdev); | |
243 | ||
244 | return sprintf(buf, "%X\n", dev->vsettings.brightness); | |
245 | } | |
246 | ||
247 | static ssize_t store_brightness(struct device *class, | |
248 | struct device_attribute *attr, const char *buf, size_t count) | |
249 | { | |
250 | char *endp; | |
251 | unsigned long value; | |
252 | int ret; | |
253 | ||
254 | struct video_device *vdev = to_video_device(class); | |
255 | struct stk_camera *dev = vdev_to_camera(vdev); | |
256 | ||
257 | value = simple_strtoul(buf, &endp, 16); | |
258 | ||
259 | dev->vsettings.brightness = (int) value; | |
260 | ||
261 | ret = stk_sensor_set_brightness(dev, value >> 8); | |
262 | if (ret) | |
263 | return ret; | |
264 | else | |
265 | return count; | |
266 | } | |
267 | ||
268 | static ssize_t show_hflip(struct device *class, | |
269 | struct device_attribute *attr, char *buf) | |
270 | { | |
271 | struct video_device *vdev = to_video_device(class); | |
272 | struct stk_camera *dev = vdev_to_camera(vdev); | |
273 | ||
274 | return sprintf(buf, "%d\n", dev->vsettings.hflip); | |
275 | } | |
276 | ||
277 | static ssize_t store_hflip(struct device *class, | |
278 | struct device_attribute *attr, const char *buf, size_t count) | |
279 | { | |
280 | struct video_device *vdev = to_video_device(class); | |
281 | struct stk_camera *dev = vdev_to_camera(vdev); | |
282 | ||
283 | if (strncmp(buf, "1", 1) == 0) | |
284 | dev->vsettings.hflip = 1; | |
285 | else if (strncmp(buf, "0", 1) == 0) | |
286 | dev->vsettings.hflip = 0; | |
287 | else | |
288 | return -EINVAL; | |
289 | ||
290 | return strlen(buf); | |
291 | } | |
292 | ||
293 | static ssize_t show_vflip(struct device *class, | |
294 | struct device_attribute *attr, char *buf) | |
295 | { | |
296 | struct video_device *vdev = to_video_device(class); | |
297 | struct stk_camera *dev = vdev_to_camera(vdev); | |
298 | ||
299 | return sprintf(buf, "%d\n", dev->vsettings.vflip); | |
300 | } | |
301 | ||
302 | static ssize_t store_vflip(struct device *class, | |
303 | struct device_attribute *attr, const char *buf, size_t count) | |
304 | { | |
305 | struct video_device *vdev = to_video_device(class); | |
306 | struct stk_camera *dev = vdev_to_camera(vdev); | |
307 | ||
308 | if (strncmp(buf, "1", 1) == 0) | |
309 | dev->vsettings.vflip = 1; | |
310 | else if (strncmp(buf, "0", 1) == 0) | |
311 | dev->vsettings.vflip = 0; | |
312 | else | |
313 | return -EINVAL; | |
314 | ||
315 | return strlen(buf); | |
316 | } | |
317 | ||
318 | static DEVICE_ATTR(brightness, S_IRUGO | S_IWUGO, | |
319 | show_brightness, store_brightness); | |
320 | static DEVICE_ATTR(hflip, S_IRUGO | S_IWUGO, show_hflip, store_hflip); | |
321 | static DEVICE_ATTR(vflip, S_IRUGO | S_IWUGO, show_vflip, store_vflip); | |
322 | ||
323 | static int stk_create_sysfs_files(struct video_device *vdev) | |
324 | { | |
325 | int ret; | |
326 | ||
f894dfd7 HV |
327 | ret = device_create_file(&vdev->dev, &dev_attr_brightness); |
328 | ret += device_create_file(&vdev->dev, &dev_attr_hflip); | |
329 | ret += device_create_file(&vdev->dev, &dev_attr_vflip); | |
330 | if (ret) | |
331 | STK_WARNING("Could not create sysfs files\n"); | |
ec16dae5 JVJ |
332 | return ret; |
333 | } | |
334 | ||
335 | static void stk_remove_sysfs_files(struct video_device *vdev) | |
336 | { | |
f894dfd7 HV |
337 | device_remove_file(&vdev->dev, &dev_attr_brightness); |
338 | device_remove_file(&vdev->dev, &dev_attr_hflip); | |
339 | device_remove_file(&vdev->dev, &dev_attr_vflip); | |
ec16dae5 JVJ |
340 | } |
341 | ||
ef69c8e8 MCC |
342 | #else |
343 | #define stk_create_sysfs_files(a) | |
344 | #define stk_remove_sysfs_files(a) | |
345 | #endif | |
ec16dae5 JVJ |
346 | |
347 | /* *********************************************** */ | |
348 | /* | |
349 | * This function is called as an URB transfert is complete (Isochronous pipe). | |
350 | * So, the traitement is done in interrupt time, so it has be fast, not crash, | |
351 | * and not stall. Neat. | |
352 | */ | |
353 | static void stk_isoc_handler(struct urb *urb) | |
354 | { | |
355 | int i; | |
356 | int ret; | |
357 | int framelen; | |
358 | unsigned long flags; | |
359 | ||
360 | unsigned char *fill = NULL; | |
361 | unsigned char *iso_buf = NULL; | |
362 | ||
363 | struct stk_camera *dev; | |
364 | struct stk_sio_buffer *fb; | |
365 | ||
366 | dev = (struct stk_camera *) urb->context; | |
367 | ||
368 | if (dev == NULL) { | |
369 | STK_ERROR("isoc_handler called with NULL device !\n"); | |
370 | return; | |
371 | } | |
372 | ||
373 | if (urb->status == -ENOENT || urb->status == -ECONNRESET | |
374 | || urb->status == -ESHUTDOWN) { | |
375 | atomic_dec(&dev->urbs_used); | |
376 | return; | |
377 | } | |
378 | ||
379 | spin_lock_irqsave(&dev->spinlock, flags); | |
380 | ||
381 | if (urb->status != -EINPROGRESS && urb->status != 0) { | |
382 | STK_ERROR("isoc_handler: urb->status == %d\n", urb->status); | |
383 | goto resubmit; | |
384 | } | |
385 | ||
386 | if (list_empty(&dev->sio_avail)) { | |
387 | /*FIXME Stop streaming after a while */ | |
388 | (void) (printk_ratelimit() && | |
389 | STK_ERROR("isoc_handler without available buffer!\n")); | |
390 | goto resubmit; | |
391 | } | |
392 | fb = list_first_entry(&dev->sio_avail, | |
393 | struct stk_sio_buffer, list); | |
394 | fill = fb->buffer + fb->v4lbuf.bytesused; | |
395 | ||
396 | for (i = 0; i < urb->number_of_packets; i++) { | |
397 | if (urb->iso_frame_desc[i].status != 0) { | |
398 | if (urb->iso_frame_desc[i].status != -EXDEV) | |
399 | STK_ERROR("Frame %d has error %d\n", i, | |
400 | urb->iso_frame_desc[i].status); | |
401 | continue; | |
402 | } | |
403 | framelen = urb->iso_frame_desc[i].actual_length; | |
404 | iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset; | |
405 | ||
406 | if (framelen <= 4) | |
407 | continue; /* no data */ | |
408 | ||
409 | /* | |
410 | * we found something informational from there | |
411 | * the isoc frames have to type of headers | |
412 | * type1: 00 xx 00 00 or 20 xx 00 00 | |
413 | * type2: 80 xx 00 00 00 00 00 00 or a0 xx 00 00 00 00 00 00 | |
414 | * xx is a sequencer which has never been seen over 0x3f | |
415 | * imho data written down looks like bayer, i see similarities | |
416 | * after every 640 bytes | |
417 | */ | |
418 | if (*iso_buf & 0x80) { | |
419 | framelen -= 8; | |
420 | iso_buf += 8; | |
421 | /* This marks a new frame */ | |
422 | if (fb->v4lbuf.bytesused != 0 | |
423 | && fb->v4lbuf.bytesused != dev->frame_size) { | |
424 | (void) (printk_ratelimit() && | |
425 | STK_ERROR("frame %d, " | |
426 | "bytesused=%d, skipping\n", | |
427 | i, fb->v4lbuf.bytesused)); | |
428 | fb->v4lbuf.bytesused = 0; | |
429 | fill = fb->buffer; | |
430 | } else if (fb->v4lbuf.bytesused == dev->frame_size) { | |
b1855907 JVJ |
431 | if (list_is_singular(&dev->sio_avail)) { |
432 | /* Always reuse the last buffer */ | |
433 | fb->v4lbuf.bytesused = 0; | |
434 | fill = fb->buffer; | |
435 | } else { | |
436 | list_move_tail(dev->sio_avail.next, | |
437 | &dev->sio_full); | |
438 | wake_up(&dev->wait_frame); | |
439 | fb = list_first_entry(&dev->sio_avail, | |
440 | struct stk_sio_buffer, list); | |
441 | fb->v4lbuf.bytesused = 0; | |
442 | fill = fb->buffer; | |
ec16dae5 | 443 | } |
ec16dae5 JVJ |
444 | } |
445 | } else { | |
446 | framelen -= 4; | |
447 | iso_buf += 4; | |
448 | } | |
449 | ||
450 | /* Our buffer is full !!! */ | |
451 | if (framelen + fb->v4lbuf.bytesused > dev->frame_size) { | |
452 | (void) (printk_ratelimit() && | |
453 | STK_ERROR("Frame buffer overflow, lost sync\n")); | |
454 | /*FIXME Do something here? */ | |
455 | continue; | |
456 | } | |
457 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
458 | memcpy(fill, iso_buf, framelen); | |
459 | spin_lock_irqsave(&dev->spinlock, flags); | |
460 | fill += framelen; | |
461 | ||
462 | /* New size of our buffer */ | |
463 | fb->v4lbuf.bytesused += framelen; | |
464 | } | |
465 | ||
466 | resubmit: | |
467 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
468 | urb->dev = dev->udev; | |
469 | ret = usb_submit_urb(urb, GFP_ATOMIC); | |
470 | if (ret != 0) { | |
471 | STK_ERROR("Error (%d) re-submitting urb in stk_isoc_handler.\n", | |
472 | ret); | |
473 | } | |
474 | } | |
475 | ||
476 | /* -------------------------------------------- */ | |
477 | ||
478 | static int stk_prepare_iso(struct stk_camera *dev) | |
479 | { | |
480 | void *kbuf; | |
481 | int i, j; | |
482 | struct urb *urb; | |
483 | struct usb_device *udev; | |
484 | ||
485 | if (dev == NULL) | |
486 | return -ENXIO; | |
487 | udev = dev->udev; | |
488 | ||
489 | if (dev->isobufs) | |
490 | STK_ERROR("isobufs already allocated. Bad\n"); | |
491 | else | |
492 | dev->isobufs = kzalloc(MAX_ISO_BUFS * sizeof(*dev->isobufs), | |
493 | GFP_KERNEL); | |
494 | if (dev->isobufs == NULL) { | |
495 | STK_ERROR("Unable to allocate iso buffers\n"); | |
496 | return -ENOMEM; | |
497 | } | |
498 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
499 | if (dev->isobufs[i].data == NULL) { | |
500 | kbuf = kzalloc(ISO_BUFFER_SIZE, GFP_KERNEL); | |
501 | if (kbuf == NULL) { | |
502 | STK_ERROR("Failed to allocate iso buffer %d\n", | |
503 | i); | |
504 | goto isobufs_out; | |
505 | } | |
506 | dev->isobufs[i].data = kbuf; | |
507 | } else | |
508 | STK_ERROR("isobuf data already allocated\n"); | |
509 | if (dev->isobufs[i].urb == NULL) { | |
510 | urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); | |
511 | if (urb == NULL) { | |
512 | STK_ERROR("Failed to allocate URB %d\n", i); | |
513 | goto isobufs_out; | |
514 | } | |
515 | dev->isobufs[i].urb = urb; | |
516 | } else { | |
517 | STK_ERROR("Killing URB\n"); | |
518 | usb_kill_urb(dev->isobufs[i].urb); | |
519 | urb = dev->isobufs[i].urb; | |
520 | } | |
521 | urb->interval = 1; | |
522 | urb->dev = udev; | |
523 | urb->pipe = usb_rcvisocpipe(udev, dev->isoc_ep); | |
524 | urb->transfer_flags = URB_ISO_ASAP; | |
525 | urb->transfer_buffer = dev->isobufs[i].data; | |
526 | urb->transfer_buffer_length = ISO_BUFFER_SIZE; | |
527 | urb->complete = stk_isoc_handler; | |
528 | urb->context = dev; | |
529 | urb->start_frame = 0; | |
530 | urb->number_of_packets = ISO_FRAMES_PER_DESC; | |
531 | ||
532 | for (j = 0; j < ISO_FRAMES_PER_DESC; j++) { | |
533 | urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE; | |
534 | urb->iso_frame_desc[j].length = ISO_MAX_FRAME_SIZE; | |
535 | } | |
536 | } | |
537 | set_memallocd(dev); | |
538 | return 0; | |
539 | ||
540 | isobufs_out: | |
541 | for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].data; i++) | |
542 | kfree(dev->isobufs[i].data); | |
543 | for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].urb; i++) | |
544 | usb_free_urb(dev->isobufs[i].urb); | |
545 | kfree(dev->isobufs); | |
546 | dev->isobufs = NULL; | |
547 | return -ENOMEM; | |
548 | } | |
549 | ||
550 | static void stk_clean_iso(struct stk_camera *dev) | |
551 | { | |
552 | int i; | |
553 | ||
554 | if (dev == NULL || dev->isobufs == NULL) | |
555 | return; | |
556 | ||
557 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
558 | struct urb *urb; | |
559 | ||
560 | urb = dev->isobufs[i].urb; | |
561 | if (urb) { | |
f051ae18 | 562 | if (atomic_read(&dev->urbs_used) && is_present(dev)) |
ec16dae5 JVJ |
563 | usb_kill_urb(urb); |
564 | usb_free_urb(urb); | |
565 | } | |
566 | kfree(dev->isobufs[i].data); | |
567 | } | |
568 | kfree(dev->isobufs); | |
569 | dev->isobufs = NULL; | |
570 | unset_memallocd(dev); | |
571 | } | |
572 | ||
573 | static int stk_setup_siobuf(struct stk_camera *dev, int index) | |
574 | { | |
575 | struct stk_sio_buffer *buf = dev->sio_bufs + index; | |
576 | INIT_LIST_HEAD(&buf->list); | |
577 | buf->v4lbuf.length = PAGE_ALIGN(dev->frame_size); | |
578 | buf->buffer = vmalloc_user(buf->v4lbuf.length); | |
579 | if (buf->buffer == NULL) | |
580 | return -ENOMEM; | |
581 | buf->mapcount = 0; | |
582 | buf->dev = dev; | |
583 | buf->v4lbuf.index = index; | |
584 | buf->v4lbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
585 | buf->v4lbuf.field = V4L2_FIELD_NONE; | |
586 | buf->v4lbuf.memory = V4L2_MEMORY_MMAP; | |
587 | buf->v4lbuf.m.offset = 2*index*buf->v4lbuf.length; | |
588 | return 0; | |
589 | } | |
590 | ||
591 | static int stk_free_sio_buffers(struct stk_camera *dev) | |
592 | { | |
593 | int i; | |
594 | int nbufs; | |
595 | unsigned long flags; | |
596 | if (dev->n_sbufs == 0 || dev->sio_bufs == NULL) | |
597 | return 0; | |
598 | /* | |
599 | * If any buffers are mapped, we cannot free them at all. | |
600 | */ | |
601 | for (i = 0; i < dev->n_sbufs; i++) { | |
602 | if (dev->sio_bufs[i].mapcount > 0) | |
603 | return -EBUSY; | |
604 | } | |
605 | /* | |
606 | * OK, let's do it. | |
607 | */ | |
608 | spin_lock_irqsave(&dev->spinlock, flags); | |
609 | INIT_LIST_HEAD(&dev->sio_avail); | |
610 | INIT_LIST_HEAD(&dev->sio_full); | |
611 | nbufs = dev->n_sbufs; | |
612 | dev->n_sbufs = 0; | |
613 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
614 | for (i = 0; i < nbufs; i++) { | |
615 | if (dev->sio_bufs[i].buffer != NULL) | |
616 | vfree(dev->sio_bufs[i].buffer); | |
617 | } | |
618 | kfree(dev->sio_bufs); | |
619 | dev->sio_bufs = NULL; | |
620 | return 0; | |
621 | } | |
622 | ||
623 | static int stk_prepare_sio_buffers(struct stk_camera *dev, unsigned n_sbufs) | |
624 | { | |
625 | int i; | |
626 | if (dev->sio_bufs != NULL) | |
627 | STK_ERROR("sio_bufs already allocated\n"); | |
628 | else { | |
629 | dev->sio_bufs = kzalloc(n_sbufs * sizeof(struct stk_sio_buffer), | |
630 | GFP_KERNEL); | |
631 | if (dev->sio_bufs == NULL) | |
632 | return -ENOMEM; | |
633 | for (i = 0; i < n_sbufs; i++) { | |
634 | if (stk_setup_siobuf(dev, i)) | |
635 | return (dev->n_sbufs > 1)? 0 : -ENOMEM; | |
636 | dev->n_sbufs = i+1; | |
637 | } | |
638 | } | |
639 | return 0; | |
640 | } | |
641 | ||
642 | static int stk_allocate_buffers(struct stk_camera *dev, unsigned n_sbufs) | |
643 | { | |
644 | int err; | |
645 | err = stk_prepare_iso(dev); | |
646 | if (err) { | |
647 | stk_clean_iso(dev); | |
648 | return err; | |
649 | } | |
650 | err = stk_prepare_sio_buffers(dev, n_sbufs); | |
651 | if (err) { | |
652 | stk_free_sio_buffers(dev); | |
653 | return err; | |
654 | } | |
655 | return 0; | |
656 | } | |
657 | ||
658 | static void stk_free_buffers(struct stk_camera *dev) | |
659 | { | |
660 | stk_clean_iso(dev); | |
661 | stk_free_sio_buffers(dev); | |
662 | } | |
663 | /* -------------------------------------------- */ | |
664 | ||
665 | /* v4l file operations */ | |
666 | ||
bec43661 | 667 | static int v4l_stk_open(struct file *fp) |
ec16dae5 JVJ |
668 | { |
669 | struct stk_camera *dev; | |
670 | struct video_device *vdev; | |
671 | ||
672 | vdev = video_devdata(fp); | |
673 | dev = vdev_to_camera(vdev); | |
674 | ||
d56dc612 HV |
675 | lock_kernel(); |
676 | if (dev == NULL || !is_present(dev)) { | |
677 | unlock_kernel(); | |
ec16dae5 | 678 | return -ENXIO; |
d56dc612 | 679 | } |
4aaec3ea | 680 | fp->private_data = dev; |
1fdd61c0 | 681 | usb_autopm_get_interface(dev->interface); |
d56dc612 | 682 | unlock_kernel(); |
ec16dae5 JVJ |
683 | |
684 | return 0; | |
685 | } | |
686 | ||
bec43661 | 687 | static int v4l_stk_release(struct file *fp) |
ec16dae5 | 688 | { |
4aaec3ea | 689 | struct stk_camera *dev = fp->private_data; |
ec16dae5 | 690 | |
f051ae18 DE |
691 | if (dev->owner == fp) { |
692 | stk_stop_stream(dev); | |
693 | stk_free_buffers(dev); | |
694 | dev->owner = NULL; | |
ec16dae5 JVJ |
695 | } |
696 | ||
f051ae18 DE |
697 | if(is_present(dev)) |
698 | usb_autopm_put_interface(dev->interface); | |
ec16dae5 JVJ |
699 | |
700 | return 0; | |
701 | } | |
702 | ||
703 | static ssize_t v4l_stk_read(struct file *fp, char __user *buf, | |
704 | size_t count, loff_t *f_pos) | |
705 | { | |
706 | int i; | |
707 | int ret; | |
708 | unsigned long flags; | |
ec16dae5 | 709 | struct stk_sio_buffer *sbuf; |
4aaec3ea | 710 | struct stk_camera *dev = fp->private_data; |
ec16dae5 | 711 | |
ec16dae5 JVJ |
712 | if (!is_present(dev)) |
713 | return -EIO; | |
714 | if (dev->owner && dev->owner != fp) | |
715 | return -EBUSY; | |
716 | dev->owner = fp; | |
717 | if (!is_streaming(dev)) { | |
718 | if (stk_initialise(dev) | |
719 | || stk_allocate_buffers(dev, 3) | |
720 | || stk_start_stream(dev)) | |
721 | return -ENOMEM; | |
722 | spin_lock_irqsave(&dev->spinlock, flags); | |
723 | for (i = 0; i < dev->n_sbufs; i++) { | |
724 | list_add_tail(&dev->sio_bufs[i].list, &dev->sio_avail); | |
725 | dev->sio_bufs[i].v4lbuf.flags = V4L2_BUF_FLAG_QUEUED; | |
726 | } | |
727 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
728 | } | |
729 | if (*f_pos == 0) { | |
730 | if (fp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full)) | |
731 | return -EWOULDBLOCK; | |
732 | ret = wait_event_interruptible(dev->wait_frame, | |
733 | !list_empty(&dev->sio_full) || !is_present(dev)); | |
734 | if (ret) | |
735 | return ret; | |
736 | if (!is_present(dev)) | |
737 | return -EIO; | |
738 | } | |
739 | if (count + *f_pos > dev->frame_size) | |
740 | count = dev->frame_size - *f_pos; | |
741 | spin_lock_irqsave(&dev->spinlock, flags); | |
742 | if (list_empty(&dev->sio_full)) { | |
743 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
744 | STK_ERROR("BUG: No siobufs ready\n"); | |
745 | return 0; | |
746 | } | |
747 | sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list); | |
748 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
749 | ||
750 | if (copy_to_user(buf, sbuf->buffer + *f_pos, count)) | |
751 | return -EFAULT; | |
752 | ||
753 | *f_pos += count; | |
754 | ||
755 | if (*f_pos >= dev->frame_size) { | |
756 | *f_pos = 0; | |
757 | spin_lock_irqsave(&dev->spinlock, flags); | |
758 | list_move_tail(&sbuf->list, &dev->sio_avail); | |
759 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
760 | } | |
761 | return count; | |
762 | } | |
763 | ||
764 | static unsigned int v4l_stk_poll(struct file *fp, poll_table *wait) | |
765 | { | |
4aaec3ea | 766 | struct stk_camera *dev = fp->private_data; |
ec16dae5 | 767 | |
ec16dae5 JVJ |
768 | poll_wait(fp, &dev->wait_frame, wait); |
769 | ||
770 | if (!is_present(dev)) | |
771 | return POLLERR; | |
772 | ||
773 | if (!list_empty(&dev->sio_full)) | |
774 | return (POLLIN | POLLRDNORM); | |
775 | ||
776 | return 0; | |
777 | } | |
778 | ||
779 | ||
780 | static void stk_v4l_vm_open(struct vm_area_struct *vma) | |
781 | { | |
782 | struct stk_sio_buffer *sbuf = vma->vm_private_data; | |
783 | sbuf->mapcount++; | |
784 | } | |
785 | static void stk_v4l_vm_close(struct vm_area_struct *vma) | |
786 | { | |
787 | struct stk_sio_buffer *sbuf = vma->vm_private_data; | |
788 | sbuf->mapcount--; | |
789 | if (sbuf->mapcount == 0) | |
790 | sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_MAPPED; | |
791 | } | |
792 | static struct vm_operations_struct stk_v4l_vm_ops = { | |
793 | .open = stk_v4l_vm_open, | |
794 | .close = stk_v4l_vm_close | |
795 | }; | |
796 | ||
797 | static int v4l_stk_mmap(struct file *fp, struct vm_area_struct *vma) | |
798 | { | |
799 | unsigned int i; | |
800 | int ret; | |
801 | unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; | |
4aaec3ea | 802 | struct stk_camera *dev = fp->private_data; |
ec16dae5 JVJ |
803 | struct stk_sio_buffer *sbuf = NULL; |
804 | ||
805 | if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED)) | |
806 | return -EINVAL; | |
807 | ||
ec16dae5 JVJ |
808 | for (i = 0; i < dev->n_sbufs; i++) { |
809 | if (dev->sio_bufs[i].v4lbuf.m.offset == offset) { | |
810 | sbuf = dev->sio_bufs + i; | |
811 | break; | |
812 | } | |
813 | } | |
814 | if (sbuf == NULL) | |
815 | return -EINVAL; | |
816 | ret = remap_vmalloc_range(vma, sbuf->buffer, 0); | |
817 | if (ret) | |
818 | return ret; | |
819 | vma->vm_flags |= VM_DONTEXPAND; | |
820 | vma->vm_private_data = sbuf; | |
821 | vma->vm_ops = &stk_v4l_vm_ops; | |
822 | sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_MAPPED; | |
823 | stk_v4l_vm_open(vma); | |
824 | return 0; | |
825 | } | |
826 | ||
827 | /* v4l ioctl handlers */ | |
828 | ||
829 | static int stk_vidioc_querycap(struct file *filp, | |
830 | void *priv, struct v4l2_capability *cap) | |
831 | { | |
832 | strcpy(cap->driver, "stk"); | |
833 | strcpy(cap->card, "stk"); | |
834 | cap->version = DRIVER_VERSION_NUM; | |
835 | ||
836 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | |
837 | | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; | |
838 | return 0; | |
839 | } | |
840 | ||
841 | static int stk_vidioc_enum_input(struct file *filp, | |
842 | void *priv, struct v4l2_input *input) | |
843 | { | |
844 | if (input->index != 0) | |
845 | return -EINVAL; | |
846 | ||
847 | strcpy(input->name, "Syntek USB Camera"); | |
848 | input->type = V4L2_INPUT_TYPE_CAMERA; | |
849 | return 0; | |
850 | } | |
851 | ||
852 | ||
853 | static int stk_vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
854 | { | |
855 | *i = 0; | |
856 | return 0; | |
857 | } | |
858 | ||
859 | static int stk_vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
860 | { | |
861 | if (i != 0) | |
862 | return -EINVAL; | |
863 | else | |
864 | return 0; | |
865 | } | |
866 | ||
867 | /* from vivi.c */ | |
868 | static int stk_vidioc_s_std(struct file *filp, void *priv, v4l2_std_id *a) | |
869 | { | |
870 | return 0; | |
871 | } | |
872 | ||
873 | /* List of all V4Lv2 controls supported by the driver */ | |
874 | static struct v4l2_queryctrl stk_controls[] = { | |
875 | { | |
876 | .id = V4L2_CID_BRIGHTNESS, | |
877 | .type = V4L2_CTRL_TYPE_INTEGER, | |
878 | .name = "Brightness", | |
879 | .minimum = 0, | |
880 | .maximum = 0xffff, | |
881 | .step = 0x0100, | |
882 | .default_value = 0x6000, | |
883 | }, | |
884 | /*TODO: get more controls to work */ | |
885 | }; | |
886 | ||
887 | static int stk_vidioc_queryctrl(struct file *filp, | |
888 | void *priv, struct v4l2_queryctrl *c) | |
889 | { | |
890 | int i; | |
891 | int nbr; | |
892 | nbr = ARRAY_SIZE(stk_controls); | |
893 | ||
894 | for (i = 0; i < nbr; i++) { | |
895 | if (stk_controls[i].id == c->id) { | |
896 | memcpy(c, &stk_controls[i], | |
897 | sizeof(struct v4l2_queryctrl)); | |
898 | return 0; | |
899 | } | |
900 | } | |
901 | return -EINVAL; | |
902 | } | |
903 | ||
904 | static int stk_vidioc_g_ctrl(struct file *filp, | |
905 | void *priv, struct v4l2_control *c) | |
906 | { | |
907 | struct stk_camera *dev = priv; | |
908 | switch (c->id) { | |
909 | case V4L2_CID_BRIGHTNESS: | |
910 | c->value = dev->vsettings.brightness; | |
911 | break; | |
912 | default: | |
913 | return -EINVAL; | |
914 | } | |
915 | return 0; | |
916 | } | |
917 | ||
918 | static int stk_vidioc_s_ctrl(struct file *filp, | |
919 | void *priv, struct v4l2_control *c) | |
920 | { | |
921 | struct stk_camera *dev = priv; | |
922 | switch (c->id) { | |
923 | case V4L2_CID_BRIGHTNESS: | |
924 | dev->vsettings.brightness = c->value; | |
925 | return stk_sensor_set_brightness(dev, c->value >> 8); | |
926 | default: | |
927 | return -EINVAL; | |
928 | } | |
929 | return 0; | |
930 | } | |
931 | ||
932 | ||
78b526a4 | 933 | static int stk_vidioc_enum_fmt_vid_cap(struct file *filp, |
ec16dae5 JVJ |
934 | void *priv, struct v4l2_fmtdesc *fmtd) |
935 | { | |
936 | fmtd->flags = 0; | |
937 | ||
938 | switch (fmtd->index) { | |
939 | case 0: | |
940 | fmtd->pixelformat = V4L2_PIX_FMT_RGB565; | |
941 | strcpy(fmtd->description, "r5g6b5"); | |
942 | break; | |
943 | case 1: | |
944 | fmtd->pixelformat = V4L2_PIX_FMT_RGB565X; | |
945 | strcpy(fmtd->description, "r5g6b5BE"); | |
946 | break; | |
947 | case 2: | |
948 | fmtd->pixelformat = V4L2_PIX_FMT_UYVY; | |
949 | strcpy(fmtd->description, "yuv4:2:2"); | |
950 | break; | |
951 | case 3: | |
952 | fmtd->pixelformat = V4L2_PIX_FMT_SBGGR8; | |
953 | strcpy(fmtd->description, "Raw bayer"); | |
954 | break; | |
1112fb68 JVJ |
955 | case 4: |
956 | fmtd->pixelformat = V4L2_PIX_FMT_YUYV; | |
957 | strcpy(fmtd->description, "yuv4:2:2"); | |
958 | break; | |
ec16dae5 JVJ |
959 | default: |
960 | return -EINVAL; | |
961 | } | |
962 | return 0; | |
963 | } | |
964 | ||
965 | static struct stk_size { | |
966 | unsigned w; | |
967 | unsigned h; | |
968 | enum stk_mode m; | |
969 | } stk_sizes[] = { | |
970 | { .w = 1280, .h = 1024, .m = MODE_SXGA, }, | |
971 | { .w = 640, .h = 480, .m = MODE_VGA, }, | |
972 | { .w = 352, .h = 288, .m = MODE_CIF, }, | |
973 | { .w = 320, .h = 240, .m = MODE_QVGA, }, | |
974 | { .w = 176, .h = 144, .m = MODE_QCIF, }, | |
975 | }; | |
976 | ||
78b526a4 | 977 | static int stk_vidioc_g_fmt_vid_cap(struct file *filp, |
ec16dae5 JVJ |
978 | void *priv, struct v4l2_format *f) |
979 | { | |
980 | struct v4l2_pix_format *pix_format = &f->fmt.pix; | |
981 | struct stk_camera *dev = priv; | |
982 | int i; | |
983 | ||
984 | for (i = 0; i < ARRAY_SIZE(stk_sizes) | |
985 | && stk_sizes[i].m != dev->vsettings.mode; | |
986 | i++); | |
987 | if (i == ARRAY_SIZE(stk_sizes)) { | |
988 | STK_ERROR("ERROR: mode invalid\n"); | |
989 | return -EINVAL; | |
990 | } | |
991 | pix_format->width = stk_sizes[i].w; | |
992 | pix_format->height = stk_sizes[i].h; | |
993 | pix_format->field = V4L2_FIELD_NONE; | |
994 | pix_format->colorspace = V4L2_COLORSPACE_SRGB; | |
995 | pix_format->priv = 0; | |
996 | pix_format->pixelformat = dev->vsettings.palette; | |
997 | if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8) | |
998 | pix_format->bytesperline = pix_format->width; | |
999 | else | |
1000 | pix_format->bytesperline = 2 * pix_format->width; | |
1001 | pix_format->sizeimage = pix_format->bytesperline | |
1002 | * pix_format->height; | |
1003 | return 0; | |
1004 | } | |
1005 | ||
78b526a4 | 1006 | static int stk_vidioc_try_fmt_vid_cap(struct file *filp, |
ec16dae5 JVJ |
1007 | void *priv, struct v4l2_format *fmtd) |
1008 | { | |
1009 | int i; | |
1010 | switch (fmtd->fmt.pix.pixelformat) { | |
1011 | case V4L2_PIX_FMT_RGB565: | |
1012 | case V4L2_PIX_FMT_RGB565X: | |
1013 | case V4L2_PIX_FMT_UYVY: | |
1112fb68 | 1014 | case V4L2_PIX_FMT_YUYV: |
ec16dae5 JVJ |
1015 | case V4L2_PIX_FMT_SBGGR8: |
1016 | break; | |
1017 | default: | |
1018 | return -EINVAL; | |
1019 | } | |
1020 | for (i = 1; i < ARRAY_SIZE(stk_sizes); i++) { | |
1021 | if (fmtd->fmt.pix.width > stk_sizes[i].w) | |
1022 | break; | |
1023 | } | |
1024 | if (i == ARRAY_SIZE(stk_sizes) | |
1025 | || (abs(fmtd->fmt.pix.width - stk_sizes[i-1].w) | |
1026 | < abs(fmtd->fmt.pix.width - stk_sizes[i].w))) { | |
1027 | fmtd->fmt.pix.height = stk_sizes[i-1].h; | |
1028 | fmtd->fmt.pix.width = stk_sizes[i-1].w; | |
1029 | fmtd->fmt.pix.priv = i - 1; | |
1030 | } else { | |
1031 | fmtd->fmt.pix.height = stk_sizes[i].h; | |
1032 | fmtd->fmt.pix.width = stk_sizes[i].w; | |
1033 | fmtd->fmt.pix.priv = i; | |
1034 | } | |
1035 | ||
1036 | fmtd->fmt.pix.field = V4L2_FIELD_NONE; | |
1037 | fmtd->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; | |
1038 | if (fmtd->fmt.pix.pixelformat == V4L2_PIX_FMT_SBGGR8) | |
1039 | fmtd->fmt.pix.bytesperline = fmtd->fmt.pix.width; | |
1040 | else | |
1041 | fmtd->fmt.pix.bytesperline = 2 * fmtd->fmt.pix.width; | |
1042 | fmtd->fmt.pix.sizeimage = fmtd->fmt.pix.bytesperline | |
1043 | * fmtd->fmt.pix.height; | |
1044 | return 0; | |
1045 | } | |
1046 | ||
1fdd61c0 JVJ |
1047 | static int stk_setup_format(struct stk_camera *dev) |
1048 | { | |
1049 | int i = 0; | |
1050 | int depth; | |
1051 | if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8) | |
1052 | depth = 1; | |
1053 | else | |
1054 | depth = 2; | |
1055 | while (stk_sizes[i].m != dev->vsettings.mode | |
1056 | && i < ARRAY_SIZE(stk_sizes)) | |
1057 | i++; | |
1058 | if (i == ARRAY_SIZE(stk_sizes)) { | |
7e28adb2 | 1059 | STK_ERROR("Something is broken in %s\n", __func__); |
1fdd61c0 JVJ |
1060 | return -EFAULT; |
1061 | } | |
1062 | /* This registers controls some timings, not sure of what. */ | |
1063 | stk_camera_write_reg(dev, 0x001b, 0x0e); | |
1064 | if (dev->vsettings.mode == MODE_SXGA) | |
1065 | stk_camera_write_reg(dev, 0x001c, 0x0e); | |
1066 | else | |
1067 | stk_camera_write_reg(dev, 0x001c, 0x46); | |
1068 | /* | |
1069 | * Registers 0x0115 0x0114 are the size of each line (bytes), | |
1070 | * regs 0x0117 0x0116 are the heigth of the image. | |
1071 | */ | |
1072 | stk_camera_write_reg(dev, 0x0115, | |
1073 | ((stk_sizes[i].w * depth) >> 8) & 0xff); | |
1074 | stk_camera_write_reg(dev, 0x0114, | |
1075 | (stk_sizes[i].w * depth) & 0xff); | |
1076 | stk_camera_write_reg(dev, 0x0117, | |
1077 | (stk_sizes[i].h >> 8) & 0xff); | |
1078 | stk_camera_write_reg(dev, 0x0116, | |
1079 | stk_sizes[i].h & 0xff); | |
1080 | return stk_sensor_configure(dev); | |
1081 | } | |
1082 | ||
78b526a4 | 1083 | static int stk_vidioc_s_fmt_vid_cap(struct file *filp, |
ec16dae5 JVJ |
1084 | void *priv, struct v4l2_format *fmtd) |
1085 | { | |
1086 | int ret; | |
1087 | struct stk_camera *dev = priv; | |
1088 | ||
1089 | if (dev == NULL) | |
1090 | return -ENODEV; | |
1091 | if (!is_present(dev)) | |
1092 | return -ENODEV; | |
1093 | if (is_streaming(dev)) | |
1094 | return -EBUSY; | |
1095 | if (dev->owner && dev->owner != filp) | |
1096 | return -EBUSY; | |
78b526a4 | 1097 | ret = stk_vidioc_try_fmt_vid_cap(filp, priv, fmtd); |
ec16dae5 JVJ |
1098 | if (ret) |
1099 | return ret; | |
1fdd61c0 | 1100 | dev->owner = filp; |
ec16dae5 JVJ |
1101 | |
1102 | dev->vsettings.palette = fmtd->fmt.pix.pixelformat; | |
1103 | stk_free_buffers(dev); | |
1104 | dev->frame_size = fmtd->fmt.pix.sizeimage; | |
1105 | dev->vsettings.mode = stk_sizes[fmtd->fmt.pix.priv].m; | |
1106 | ||
1107 | stk_initialise(dev); | |
1fdd61c0 | 1108 | return stk_setup_format(dev); |
ec16dae5 JVJ |
1109 | } |
1110 | ||
1111 | static int stk_vidioc_reqbufs(struct file *filp, | |
1112 | void *priv, struct v4l2_requestbuffers *rb) | |
1113 | { | |
1114 | struct stk_camera *dev = priv; | |
1115 | ||
1116 | if (dev == NULL) | |
1117 | return -ENODEV; | |
1118 | if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1119 | return -EINVAL; | |
1120 | if (rb->memory != V4L2_MEMORY_MMAP) | |
1121 | return -EINVAL; | |
1122 | if (is_streaming(dev) | |
1123 | || (dev->owner && dev->owner != filp)) | |
1124 | return -EBUSY; | |
1125 | dev->owner = filp; | |
1126 | ||
1127 | /*FIXME If they ask for zero, we must stop streaming and free */ | |
1128 | if (rb->count < 3) | |
1129 | rb->count = 3; | |
1130 | /* Arbitrary limit */ | |
1131 | else if (rb->count > 5) | |
1132 | rb->count = 5; | |
1133 | ||
1134 | stk_allocate_buffers(dev, rb->count); | |
1135 | rb->count = dev->n_sbufs; | |
1136 | return 0; | |
1137 | } | |
1138 | ||
1139 | static int stk_vidioc_querybuf(struct file *filp, | |
1140 | void *priv, struct v4l2_buffer *buf) | |
1141 | { | |
1142 | int index; | |
1143 | struct stk_camera *dev = priv; | |
1144 | struct stk_sio_buffer *sbuf; | |
1145 | ||
1146 | if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1147 | return -EINVAL; | |
1148 | ||
1149 | index = buf->index; | |
1150 | ||
1151 | if (index < 0 || index >= dev->n_sbufs) | |
1152 | return -EINVAL; | |
1153 | sbuf = dev->sio_bufs + buf->index; | |
1154 | *buf = sbuf->v4lbuf; | |
1155 | return 0; | |
1156 | } | |
1157 | ||
1158 | static int stk_vidioc_qbuf(struct file *filp, | |
1159 | void *priv, struct v4l2_buffer *buf) | |
1160 | { | |
1161 | struct stk_camera *dev = priv; | |
1162 | struct stk_sio_buffer *sbuf; | |
1163 | unsigned long flags; | |
1164 | if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1165 | return -EINVAL; | |
1166 | ||
1167 | if (buf->memory != V4L2_MEMORY_MMAP) | |
1168 | return -EINVAL; | |
1169 | ||
1170 | if (buf->index < 0 || buf->index >= dev->n_sbufs) | |
1171 | return -EINVAL; | |
1172 | sbuf = dev->sio_bufs + buf->index; | |
1173 | if (sbuf->v4lbuf.flags & V4L2_BUF_FLAG_QUEUED) | |
1174 | return 0; | |
1175 | sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_QUEUED; | |
1176 | sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_DONE; | |
1177 | spin_lock_irqsave(&dev->spinlock, flags); | |
1178 | list_add_tail(&sbuf->list, &dev->sio_avail); | |
1179 | *buf = sbuf->v4lbuf; | |
1180 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1181 | return 0; | |
1182 | } | |
1183 | ||
1184 | static int stk_vidioc_dqbuf(struct file *filp, | |
1185 | void *priv, struct v4l2_buffer *buf) | |
1186 | { | |
1187 | struct stk_camera *dev = priv; | |
1188 | struct stk_sio_buffer *sbuf; | |
1189 | unsigned long flags; | |
1190 | int ret; | |
1191 | ||
1192 | if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE | |
1193 | || !is_streaming(dev)) | |
1194 | return -EINVAL; | |
1195 | ||
1196 | if (filp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full)) | |
1197 | return -EWOULDBLOCK; | |
1198 | ret = wait_event_interruptible(dev->wait_frame, | |
1199 | !list_empty(&dev->sio_full) || !is_present(dev)); | |
1200 | if (ret) | |
1201 | return ret; | |
1202 | if (!is_present(dev)) | |
1203 | return -EIO; | |
1204 | ||
1205 | spin_lock_irqsave(&dev->spinlock, flags); | |
1206 | sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list); | |
1207 | list_del_init(&sbuf->list); | |
1208 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1209 | sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_QUEUED; | |
1210 | sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_DONE; | |
1211 | sbuf->v4lbuf.sequence = ++dev->sequence; | |
1212 | do_gettimeofday(&sbuf->v4lbuf.timestamp); | |
1213 | ||
1214 | *buf = sbuf->v4lbuf; | |
1215 | return 0; | |
1216 | } | |
1217 | ||
1218 | static int stk_vidioc_streamon(struct file *filp, | |
1219 | void *priv, enum v4l2_buf_type type) | |
1220 | { | |
1221 | struct stk_camera *dev = priv; | |
1222 | if (is_streaming(dev)) | |
1223 | return 0; | |
1224 | if (dev->sio_bufs == NULL) | |
1225 | return -EINVAL; | |
1226 | dev->sequence = 0; | |
1227 | return stk_start_stream(dev); | |
1228 | } | |
1229 | ||
1230 | static int stk_vidioc_streamoff(struct file *filp, | |
1231 | void *priv, enum v4l2_buf_type type) | |
1232 | { | |
1233 | struct stk_camera *dev = priv; | |
1234 | unsigned long flags; | |
1235 | int i; | |
1236 | stk_stop_stream(dev); | |
1237 | spin_lock_irqsave(&dev->spinlock, flags); | |
1238 | INIT_LIST_HEAD(&dev->sio_avail); | |
1239 | INIT_LIST_HEAD(&dev->sio_full); | |
1240 | for (i = 0; i < dev->n_sbufs; i++) { | |
1241 | INIT_LIST_HEAD(&dev->sio_bufs[i].list); | |
1242 | dev->sio_bufs[i].v4lbuf.flags = 0; | |
1243 | } | |
1244 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1245 | return 0; | |
1246 | } | |
1247 | ||
1248 | ||
1249 | static int stk_vidioc_g_parm(struct file *filp, | |
1250 | void *priv, struct v4l2_streamparm *sp) | |
1251 | { | |
1252 | if (sp->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1253 | return -EINVAL; | |
1254 | ||
1255 | sp->parm.capture.capability = 0; | |
1256 | sp->parm.capture.capturemode = 0; | |
1257 | /*FIXME This is not correct */ | |
1258 | sp->parm.capture.timeperframe.numerator = 1; | |
1259 | sp->parm.capture.timeperframe.denominator = 30; | |
1260 | sp->parm.capture.readbuffers = 2; | |
1261 | sp->parm.capture.extendedmode = 0; | |
1262 | return 0; | |
1263 | } | |
1264 | ||
126be90f JVJ |
1265 | static int stk_vidioc_enum_framesizes(struct file *filp, |
1266 | void *priv, struct v4l2_frmsizeenum *frms) | |
1267 | { | |
1268 | if (frms->index >= ARRAY_SIZE(stk_sizes)) | |
1269 | return -EINVAL; | |
1270 | switch (frms->pixel_format) { | |
1271 | case V4L2_PIX_FMT_RGB565: | |
1272 | case V4L2_PIX_FMT_RGB565X: | |
1273 | case V4L2_PIX_FMT_UYVY: | |
1274 | case V4L2_PIX_FMT_YUYV: | |
1275 | case V4L2_PIX_FMT_SBGGR8: | |
1276 | frms->type = V4L2_FRMSIZE_TYPE_DISCRETE; | |
1277 | frms->discrete.width = stk_sizes[frms->index].w; | |
1278 | frms->discrete.height = stk_sizes[frms->index].h; | |
1279 | return 0; | |
1280 | default: return -EINVAL; | |
1281 | } | |
1282 | } | |
1283 | ||
bec43661 | 1284 | static struct v4l2_file_operations v4l_stk_fops = { |
ec16dae5 JVJ |
1285 | .owner = THIS_MODULE, |
1286 | .open = v4l_stk_open, | |
1287 | .release = v4l_stk_release, | |
1288 | .read = v4l_stk_read, | |
1289 | .poll = v4l_stk_poll, | |
1290 | .mmap = v4l_stk_mmap, | |
1291 | .ioctl = video_ioctl2, | |
ec16dae5 JVJ |
1292 | }; |
1293 | ||
a399810c | 1294 | static const struct v4l2_ioctl_ops v4l_stk_ioctl_ops = { |
ec16dae5 | 1295 | .vidioc_querycap = stk_vidioc_querycap, |
78b526a4 HV |
1296 | .vidioc_enum_fmt_vid_cap = stk_vidioc_enum_fmt_vid_cap, |
1297 | .vidioc_try_fmt_vid_cap = stk_vidioc_try_fmt_vid_cap, | |
1298 | .vidioc_s_fmt_vid_cap = stk_vidioc_s_fmt_vid_cap, | |
1299 | .vidioc_g_fmt_vid_cap = stk_vidioc_g_fmt_vid_cap, | |
ec16dae5 JVJ |
1300 | .vidioc_enum_input = stk_vidioc_enum_input, |
1301 | .vidioc_s_input = stk_vidioc_s_input, | |
1302 | .vidioc_g_input = stk_vidioc_g_input, | |
1303 | .vidioc_s_std = stk_vidioc_s_std, | |
1304 | .vidioc_reqbufs = stk_vidioc_reqbufs, | |
1305 | .vidioc_querybuf = stk_vidioc_querybuf, | |
1306 | .vidioc_qbuf = stk_vidioc_qbuf, | |
1307 | .vidioc_dqbuf = stk_vidioc_dqbuf, | |
1308 | .vidioc_streamon = stk_vidioc_streamon, | |
1309 | .vidioc_streamoff = stk_vidioc_streamoff, | |
1310 | .vidioc_queryctrl = stk_vidioc_queryctrl, | |
1311 | .vidioc_g_ctrl = stk_vidioc_g_ctrl, | |
1312 | .vidioc_s_ctrl = stk_vidioc_s_ctrl, | |
1313 | .vidioc_g_parm = stk_vidioc_g_parm, | |
126be90f | 1314 | .vidioc_enum_framesizes = stk_vidioc_enum_framesizes, |
ec16dae5 JVJ |
1315 | }; |
1316 | ||
a399810c HV |
1317 | static void stk_v4l_dev_release(struct video_device *vd) |
1318 | { | |
4aaec3ea DE |
1319 | struct stk_camera *dev = vdev_to_camera(vd); |
1320 | ||
1321 | if (dev->sio_bufs != NULL || dev->isobufs != NULL) | |
1322 | STK_ERROR("We are leaking memory\n"); | |
1323 | usb_put_intf(dev->interface); | |
1324 | kfree(dev); | |
a399810c HV |
1325 | } |
1326 | ||
1327 | static struct video_device stk_v4l_data = { | |
1328 | .name = "stkwebcam", | |
a399810c HV |
1329 | .minor = -1, |
1330 | .tvnorms = V4L2_STD_UNKNOWN, | |
1331 | .current_norm = V4L2_STD_UNKNOWN, | |
1332 | .fops = &v4l_stk_fops, | |
1333 | .ioctl_ops = &v4l_stk_ioctl_ops, | |
1334 | .release = stk_v4l_dev_release, | |
1335 | }; | |
1336 | ||
ec16dae5 JVJ |
1337 | |
1338 | static int stk_register_video_device(struct stk_camera *dev) | |
1339 | { | |
1340 | int err; | |
1341 | ||
1342 | dev->vdev = stk_v4l_data; | |
1343 | dev->vdev.debug = debug; | |
5e85e732 | 1344 | dev->vdev.parent = &dev->interface->dev; |
ec16dae5 JVJ |
1345 | err = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1); |
1346 | if (err) | |
1347 | STK_ERROR("v4l registration failed\n"); | |
1348 | else | |
1349 | STK_INFO("Syntek USB2.0 Camera is now controlling video device" | |
c6330fb8 | 1350 | " /dev/video%d\n", dev->vdev.num); |
ec16dae5 JVJ |
1351 | return err; |
1352 | } | |
1353 | ||
1354 | ||
1355 | /* USB Stuff */ | |
1356 | ||
1357 | static int stk_camera_probe(struct usb_interface *interface, | |
1358 | const struct usb_device_id *id) | |
1359 | { | |
1360 | int i; | |
4aaec3ea | 1361 | int err = 0; |
ec16dae5 JVJ |
1362 | |
1363 | struct stk_camera *dev = NULL; | |
1364 | struct usb_device *udev = interface_to_usbdev(interface); | |
1365 | struct usb_host_interface *iface_desc; | |
1366 | struct usb_endpoint_descriptor *endpoint; | |
1367 | ||
1368 | dev = kzalloc(sizeof(struct stk_camera), GFP_KERNEL); | |
1369 | if (dev == NULL) { | |
1370 | STK_ERROR("Out of memory !\n"); | |
1371 | return -ENOMEM; | |
1372 | } | |
1373 | ||
ec16dae5 JVJ |
1374 | spin_lock_init(&dev->spinlock); |
1375 | init_waitqueue_head(&dev->wait_frame); | |
1376 | ||
1377 | dev->udev = udev; | |
1378 | dev->interface = interface; | |
1379 | usb_get_intf(interface); | |
1380 | ||
1381 | dev->vsettings.vflip = vflip; | |
1382 | dev->vsettings.hflip = hflip; | |
1383 | dev->n_sbufs = 0; | |
1384 | set_present(dev); | |
1385 | ||
1386 | /* Set up the endpoint information | |
1387 | * use only the first isoc-in endpoint | |
1388 | * for the current alternate setting */ | |
1389 | iface_desc = interface->cur_altsetting; | |
1390 | ||
1391 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
1392 | endpoint = &iface_desc->endpoint[i].desc; | |
1393 | ||
1394 | if (!dev->isoc_ep | |
13417982 | 1395 | && usb_endpoint_is_isoc_in(endpoint)) { |
ec16dae5 | 1396 | /* we found an isoc in endpoint */ |
13417982 | 1397 | dev->isoc_ep = usb_endpoint_num(endpoint); |
ec16dae5 JVJ |
1398 | break; |
1399 | } | |
1400 | } | |
1401 | if (!dev->isoc_ep) { | |
1402 | STK_ERROR("Could not find isoc-in endpoint"); | |
4aaec3ea DE |
1403 | err = -ENODEV; |
1404 | goto error; | |
ec16dae5 JVJ |
1405 | } |
1406 | dev->vsettings.brightness = 0x7fff; | |
1407 | dev->vsettings.palette = V4L2_PIX_FMT_RGB565; | |
1408 | dev->vsettings.mode = MODE_VGA; | |
1112fb68 | 1409 | dev->frame_size = 640 * 480 * 2; |
ec16dae5 JVJ |
1410 | |
1411 | INIT_LIST_HEAD(&dev->sio_avail); | |
1412 | INIT_LIST_HEAD(&dev->sio_full); | |
1413 | ||
1414 | usb_set_intfdata(interface, dev); | |
1415 | ||
1416 | err = stk_register_video_device(dev); | |
1417 | if (err) { | |
4aaec3ea | 1418 | goto error; |
ec16dae5 JVJ |
1419 | } |
1420 | ||
1421 | stk_create_sysfs_files(&dev->vdev); | |
1fdd61c0 | 1422 | usb_autopm_enable(dev->interface); |
ec16dae5 JVJ |
1423 | |
1424 | return 0; | |
4aaec3ea DE |
1425 | |
1426 | error: | |
1427 | kfree(dev); | |
1428 | return err; | |
ec16dae5 JVJ |
1429 | } |
1430 | ||
1431 | static void stk_camera_disconnect(struct usb_interface *interface) | |
1432 | { | |
1433 | struct stk_camera *dev = usb_get_intfdata(interface); | |
1434 | ||
1435 | usb_set_intfdata(interface, NULL); | |
1436 | unset_present(dev); | |
1437 | ||
1438 | wake_up_interruptible(&dev->wait_frame); | |
1439 | stk_remove_sysfs_files(&dev->vdev); | |
1440 | ||
081d868f | 1441 | STK_INFO("Syntek USB2.0 Camera release resources " |
c6330fb8 | 1442 | "video device /dev/video%d\n", dev->vdev.num); |
4aaec3ea DE |
1443 | |
1444 | video_unregister_device(&dev->vdev); | |
ec16dae5 JVJ |
1445 | } |
1446 | ||
1fdd61c0 | 1447 | #ifdef CONFIG_PM |
4d34dccd | 1448 | static int stk_camera_suspend(struct usb_interface *intf, pm_message_t message) |
1fdd61c0 JVJ |
1449 | { |
1450 | struct stk_camera *dev = usb_get_intfdata(intf); | |
1451 | if (is_streaming(dev)) { | |
1452 | stk_stop_stream(dev); | |
1453 | /* yes, this is ugly */ | |
1454 | set_streaming(dev); | |
1455 | } | |
1456 | return 0; | |
1457 | } | |
1458 | ||
4d34dccd | 1459 | static int stk_camera_resume(struct usb_interface *intf) |
1fdd61c0 JVJ |
1460 | { |
1461 | struct stk_camera *dev = usb_get_intfdata(intf); | |
1462 | if (!is_initialised(dev)) | |
1463 | return 0; | |
1464 | unset_initialised(dev); | |
1465 | stk_initialise(dev); | |
1466 | stk_setup_format(dev); | |
1467 | if (is_streaming(dev)) | |
1468 | stk_start_stream(dev); | |
1469 | return 0; | |
1470 | } | |
1471 | #endif | |
1472 | ||
ec16dae5 JVJ |
1473 | static struct usb_driver stk_camera_driver = { |
1474 | .name = "stkwebcam", | |
1475 | .probe = stk_camera_probe, | |
1476 | .disconnect = stk_camera_disconnect, | |
1477 | .id_table = stkwebcam_table, | |
1fdd61c0 JVJ |
1478 | #ifdef CONFIG_PM |
1479 | .suspend = stk_camera_suspend, | |
1480 | .resume = stk_camera_resume, | |
1481 | #endif | |
ec16dae5 JVJ |
1482 | }; |
1483 | ||
1484 | ||
1485 | static int __init stk_camera_init(void) | |
1486 | { | |
1487 | int result; | |
1488 | ||
1489 | result = usb_register(&stk_camera_driver); | |
1490 | if (result) | |
1491 | STK_ERROR("usb_register failed ! Error number %d\n", result); | |
1492 | ||
1493 | ||
1494 | return result; | |
1495 | } | |
1496 | ||
1497 | static void __exit stk_camera_exit(void) | |
1498 | { | |
1499 | usb_deregister(&stk_camera_driver); | |
1500 | } | |
1501 | ||
1502 | module_init(stk_camera_init); | |
1503 | module_exit(stk_camera_exit); | |
1504 | ||
1505 |