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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> | |
405f5571 | 30 | #include <linux/smp_lock.h> |
ec16dae5 JVJ |
31 | |
32 | #include <linux/usb.h> | |
ef69c8e8 | 33 | #include <linux/mm.h> |
387d4477 | 34 | #include <linux/vmalloc.h> |
ec16dae5 JVJ |
35 | #include <linux/videodev2.h> |
36 | #include <media/v4l2-common.h> | |
35ea11ff | 37 | #include <media/v4l2-ioctl.h> |
ec16dae5 JVJ |
38 | |
39 | #include "stk-webcam.h" | |
40 | ||
41 | ||
42 | static int hflip = 1; | |
43 | module_param(hflip, bool, 0444); | |
44 | MODULE_PARM_DESC(hflip, "Horizontal image flip (mirror). Defaults to 1"); | |
45 | ||
46 | static int vflip = 1; | |
47 | module_param(vflip, bool, 0444); | |
48 | MODULE_PARM_DESC(vflip, "Vertical image flip. Defaults to 1"); | |
49 | ||
50 | static int debug; | |
51 | module_param(debug, int, 0444); | |
52 | MODULE_PARM_DESC(debug, "Debug v4l ioctls. Defaults to 0"); | |
53 | ||
54 | MODULE_LICENSE("GPL"); | |
55 | MODULE_AUTHOR("Jaime Velasco Juan <jsagarribay@gmail.com> and Nicolas VIVIEN"); | |
56 | MODULE_DESCRIPTION("Syntek DC1125 webcam driver"); | |
57 | ||
58 | ||
59 | ||
60 | /* Some cameras have audio interfaces, we aren't interested in those */ | |
61 | static struct usb_device_id stkwebcam_table[] = { | |
62 | { USB_DEVICE_AND_INTERFACE_INFO(0x174f, 0xa311, 0xff, 0xff, 0xff) }, | |
63 | { USB_DEVICE_AND_INTERFACE_INFO(0x05e1, 0x0501, 0xff, 0xff, 0xff) }, | |
64 | { } | |
65 | }; | |
66 | MODULE_DEVICE_TABLE(usb, stkwebcam_table); | |
67 | ||
ec16dae5 JVJ |
68 | /* |
69 | * Basic stuff | |
70 | */ | |
71 | int stk_camera_write_reg(struct stk_camera *dev, u16 index, u8 value) | |
72 | { | |
73 | struct usb_device *udev = dev->udev; | |
74 | int ret; | |
75 | ||
76 | ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), | |
77 | 0x01, | |
78 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
79 | value, | |
80 | index, | |
81 | NULL, | |
82 | 0, | |
83 | 500); | |
84 | if (ret < 0) | |
85 | return ret; | |
86 | else | |
87 | return 0; | |
88 | } | |
89 | ||
90 | int stk_camera_read_reg(struct stk_camera *dev, u16 index, int *value) | |
91 | { | |
92 | struct usb_device *udev = dev->udev; | |
93 | int ret; | |
94 | ||
95 | ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), | |
96 | 0x00, | |
97 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
98 | 0x00, | |
99 | index, | |
100 | (u8 *) value, | |
101 | sizeof(u8), | |
102 | 500); | |
103 | if (ret < 0) | |
104 | return ret; | |
105 | else | |
106 | return 0; | |
107 | } | |
108 | ||
109 | static int stk_start_stream(struct stk_camera *dev) | |
110 | { | |
111 | int value; | |
112 | int i, ret; | |
113 | int value_116, value_117; | |
114 | ||
115 | if (!is_present(dev)) | |
116 | return -ENODEV; | |
117 | if (!is_memallocd(dev) || !is_initialised(dev)) { | |
118 | STK_ERROR("FIXME: Buffers are not allocated\n"); | |
119 | return -EFAULT; | |
120 | } | |
121 | ret = usb_set_interface(dev->udev, 0, 5); | |
122 | ||
123 | if (ret < 0) | |
124 | STK_ERROR("usb_set_interface failed !\n"); | |
125 | if (stk_sensor_wakeup(dev)) | |
126 | STK_ERROR("error awaking the sensor\n"); | |
127 | ||
128 | stk_camera_read_reg(dev, 0x0116, &value_116); | |
129 | stk_camera_read_reg(dev, 0x0117, &value_117); | |
130 | ||
131 | stk_camera_write_reg(dev, 0x0116, 0x0000); | |
132 | stk_camera_write_reg(dev, 0x0117, 0x0000); | |
133 | ||
134 | stk_camera_read_reg(dev, 0x0100, &value); | |
135 | stk_camera_write_reg(dev, 0x0100, value | 0x80); | |
136 | ||
137 | stk_camera_write_reg(dev, 0x0116, value_116); | |
138 | stk_camera_write_reg(dev, 0x0117, value_117); | |
139 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
140 | if (dev->isobufs[i].urb) { | |
141 | ret = usb_submit_urb(dev->isobufs[i].urb, GFP_KERNEL); | |
142 | atomic_inc(&dev->urbs_used); | |
143 | if (ret) | |
144 | return ret; | |
145 | } | |
146 | } | |
147 | set_streaming(dev); | |
148 | return 0; | |
149 | } | |
150 | ||
151 | static int stk_stop_stream(struct stk_camera *dev) | |
152 | { | |
153 | int value; | |
154 | int i; | |
155 | if (is_present(dev)) { | |
156 | stk_camera_read_reg(dev, 0x0100, &value); | |
157 | stk_camera_write_reg(dev, 0x0100, value & ~0x80); | |
158 | if (dev->isobufs != NULL) { | |
159 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
160 | if (dev->isobufs[i].urb) | |
161 | usb_kill_urb(dev->isobufs[i].urb); | |
162 | } | |
163 | } | |
164 | unset_streaming(dev); | |
165 | ||
166 | if (usb_set_interface(dev->udev, 0, 0)) | |
167 | STK_ERROR("usb_set_interface failed !\n"); | |
168 | if (stk_sensor_sleep(dev)) | |
169 | STK_ERROR("error suspending the sensor\n"); | |
170 | } | |
171 | return 0; | |
172 | } | |
173 | ||
174 | /* | |
175 | * This seems to be the shortest init sequence we | |
176 | * must do in order to find the sensor | |
177 | * Bit 5 of reg. 0x0000 here is important, when reset to 0 the sensor | |
178 | * is also reset. Maybe powers down it? | |
179 | * Rest of values don't make a difference | |
180 | */ | |
181 | ||
182 | static struct regval stk1125_initvals[] = { | |
183 | /*TODO: What means this sequence? */ | |
184 | {0x0000, 0x24}, | |
185 | {0x0100, 0x21}, | |
186 | {0x0002, 0x68}, | |
187 | {0x0003, 0x80}, | |
188 | {0x0005, 0x00}, | |
189 | {0x0007, 0x03}, | |
190 | {0x000d, 0x00}, | |
191 | {0x000f, 0x02}, | |
192 | {0x0300, 0x12}, | |
193 | {0x0350, 0x41}, | |
194 | {0x0351, 0x00}, | |
195 | {0x0352, 0x00}, | |
196 | {0x0353, 0x00}, | |
197 | {0x0018, 0x10}, | |
198 | {0x0019, 0x00}, | |
199 | {0x001b, 0x0e}, | |
200 | {0x001c, 0x46}, | |
201 | {0x0300, 0x80}, | |
202 | {0x001a, 0x04}, | |
203 | {0x0110, 0x00}, | |
204 | {0x0111, 0x00}, | |
205 | {0x0112, 0x00}, | |
206 | {0x0113, 0x00}, | |
207 | ||
208 | {0xffff, 0xff}, | |
209 | }; | |
210 | ||
211 | ||
212 | static int stk_initialise(struct stk_camera *dev) | |
213 | { | |
214 | struct regval *rv; | |
215 | int ret; | |
216 | if (!is_present(dev)) | |
217 | return -ENODEV; | |
218 | if (is_initialised(dev)) | |
219 | return 0; | |
220 | rv = stk1125_initvals; | |
221 | while (rv->reg != 0xffff) { | |
222 | ret = stk_camera_write_reg(dev, rv->reg, rv->val); | |
223 | if (ret) | |
224 | return ret; | |
225 | rv++; | |
226 | } | |
227 | if (stk_sensor_init(dev) == 0) { | |
228 | set_initialised(dev); | |
229 | return 0; | |
230 | } else | |
231 | return -1; | |
232 | } | |
233 | ||
ef69c8e8 MCC |
234 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
235 | ||
ec16dae5 JVJ |
236 | /* sysfs functions */ |
237 | /*FIXME cleanup this */ | |
238 | ||
239 | static ssize_t show_brightness(struct device *class, | |
240 | struct device_attribute *attr, char *buf) | |
241 | { | |
242 | struct video_device *vdev = to_video_device(class); | |
243 | struct stk_camera *dev = vdev_to_camera(vdev); | |
244 | ||
245 | return sprintf(buf, "%X\n", dev->vsettings.brightness); | |
246 | } | |
247 | ||
248 | static ssize_t store_brightness(struct device *class, | |
249 | struct device_attribute *attr, const char *buf, size_t count) | |
250 | { | |
251 | char *endp; | |
252 | unsigned long value; | |
253 | int ret; | |
254 | ||
255 | struct video_device *vdev = to_video_device(class); | |
256 | struct stk_camera *dev = vdev_to_camera(vdev); | |
257 | ||
258 | value = simple_strtoul(buf, &endp, 16); | |
259 | ||
260 | dev->vsettings.brightness = (int) value; | |
261 | ||
262 | ret = stk_sensor_set_brightness(dev, value >> 8); | |
263 | if (ret) | |
264 | return ret; | |
265 | else | |
266 | return count; | |
267 | } | |
268 | ||
269 | static ssize_t show_hflip(struct device *class, | |
270 | struct device_attribute *attr, char *buf) | |
271 | { | |
272 | struct video_device *vdev = to_video_device(class); | |
273 | struct stk_camera *dev = vdev_to_camera(vdev); | |
274 | ||
275 | return sprintf(buf, "%d\n", dev->vsettings.hflip); | |
276 | } | |
277 | ||
278 | static ssize_t store_hflip(struct device *class, | |
279 | struct device_attribute *attr, const char *buf, size_t count) | |
280 | { | |
281 | struct video_device *vdev = to_video_device(class); | |
282 | struct stk_camera *dev = vdev_to_camera(vdev); | |
283 | ||
284 | if (strncmp(buf, "1", 1) == 0) | |
285 | dev->vsettings.hflip = 1; | |
286 | else if (strncmp(buf, "0", 1) == 0) | |
287 | dev->vsettings.hflip = 0; | |
288 | else | |
289 | return -EINVAL; | |
290 | ||
291 | return strlen(buf); | |
292 | } | |
293 | ||
294 | static ssize_t show_vflip(struct device *class, | |
295 | struct device_attribute *attr, char *buf) | |
296 | { | |
297 | struct video_device *vdev = to_video_device(class); | |
298 | struct stk_camera *dev = vdev_to_camera(vdev); | |
299 | ||
300 | return sprintf(buf, "%d\n", dev->vsettings.vflip); | |
301 | } | |
302 | ||
303 | static ssize_t store_vflip(struct device *class, | |
304 | struct device_attribute *attr, const char *buf, size_t count) | |
305 | { | |
306 | struct video_device *vdev = to_video_device(class); | |
307 | struct stk_camera *dev = vdev_to_camera(vdev); | |
308 | ||
309 | if (strncmp(buf, "1", 1) == 0) | |
310 | dev->vsettings.vflip = 1; | |
311 | else if (strncmp(buf, "0", 1) == 0) | |
312 | dev->vsettings.vflip = 0; | |
313 | else | |
314 | return -EINVAL; | |
315 | ||
316 | return strlen(buf); | |
317 | } | |
318 | ||
319 | static DEVICE_ATTR(brightness, S_IRUGO | S_IWUGO, | |
320 | show_brightness, store_brightness); | |
321 | static DEVICE_ATTR(hflip, S_IRUGO | S_IWUGO, show_hflip, store_hflip); | |
322 | static DEVICE_ATTR(vflip, S_IRUGO | S_IWUGO, show_vflip, store_vflip); | |
323 | ||
324 | static int stk_create_sysfs_files(struct video_device *vdev) | |
325 | { | |
326 | int ret; | |
327 | ||
f894dfd7 HV |
328 | ret = device_create_file(&vdev->dev, &dev_attr_brightness); |
329 | ret += device_create_file(&vdev->dev, &dev_attr_hflip); | |
330 | ret += device_create_file(&vdev->dev, &dev_attr_vflip); | |
331 | if (ret) | |
332 | STK_WARNING("Could not create sysfs files\n"); | |
ec16dae5 JVJ |
333 | return ret; |
334 | } | |
335 | ||
336 | static void stk_remove_sysfs_files(struct video_device *vdev) | |
337 | { | |
f894dfd7 HV |
338 | device_remove_file(&vdev->dev, &dev_attr_brightness); |
339 | device_remove_file(&vdev->dev, &dev_attr_hflip); | |
340 | device_remove_file(&vdev->dev, &dev_attr_vflip); | |
ec16dae5 JVJ |
341 | } |
342 | ||
ef69c8e8 MCC |
343 | #else |
344 | #define stk_create_sysfs_files(a) | |
345 | #define stk_remove_sysfs_files(a) | |
346 | #endif | |
ec16dae5 JVJ |
347 | |
348 | /* *********************************************** */ | |
349 | /* | |
350 | * This function is called as an URB transfert is complete (Isochronous pipe). | |
351 | * So, the traitement is done in interrupt time, so it has be fast, not crash, | |
352 | * and not stall. Neat. | |
353 | */ | |
354 | static void stk_isoc_handler(struct urb *urb) | |
355 | { | |
356 | int i; | |
357 | int ret; | |
358 | int framelen; | |
359 | unsigned long flags; | |
360 | ||
361 | unsigned char *fill = NULL; | |
362 | unsigned char *iso_buf = NULL; | |
363 | ||
364 | struct stk_camera *dev; | |
365 | struct stk_sio_buffer *fb; | |
366 | ||
367 | dev = (struct stk_camera *) urb->context; | |
368 | ||
369 | if (dev == NULL) { | |
370 | STK_ERROR("isoc_handler called with NULL device !\n"); | |
371 | return; | |
372 | } | |
373 | ||
374 | if (urb->status == -ENOENT || urb->status == -ECONNRESET | |
375 | || urb->status == -ESHUTDOWN) { | |
376 | atomic_dec(&dev->urbs_used); | |
377 | return; | |
378 | } | |
379 | ||
380 | spin_lock_irqsave(&dev->spinlock, flags); | |
381 | ||
382 | if (urb->status != -EINPROGRESS && urb->status != 0) { | |
383 | STK_ERROR("isoc_handler: urb->status == %d\n", urb->status); | |
384 | goto resubmit; | |
385 | } | |
386 | ||
387 | if (list_empty(&dev->sio_avail)) { | |
388 | /*FIXME Stop streaming after a while */ | |
389 | (void) (printk_ratelimit() && | |
390 | STK_ERROR("isoc_handler without available buffer!\n")); | |
391 | goto resubmit; | |
392 | } | |
393 | fb = list_first_entry(&dev->sio_avail, | |
394 | struct stk_sio_buffer, list); | |
395 | fill = fb->buffer + fb->v4lbuf.bytesused; | |
396 | ||
397 | for (i = 0; i < urb->number_of_packets; i++) { | |
398 | if (urb->iso_frame_desc[i].status != 0) { | |
399 | if (urb->iso_frame_desc[i].status != -EXDEV) | |
400 | STK_ERROR("Frame %d has error %d\n", i, | |
401 | urb->iso_frame_desc[i].status); | |
402 | continue; | |
403 | } | |
404 | framelen = urb->iso_frame_desc[i].actual_length; | |
405 | iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset; | |
406 | ||
407 | if (framelen <= 4) | |
408 | continue; /* no data */ | |
409 | ||
410 | /* | |
411 | * we found something informational from there | |
412 | * the isoc frames have to type of headers | |
413 | * type1: 00 xx 00 00 or 20 xx 00 00 | |
414 | * type2: 80 xx 00 00 00 00 00 00 or a0 xx 00 00 00 00 00 00 | |
415 | * xx is a sequencer which has never been seen over 0x3f | |
416 | * imho data written down looks like bayer, i see similarities | |
417 | * after every 640 bytes | |
418 | */ | |
419 | if (*iso_buf & 0x80) { | |
420 | framelen -= 8; | |
421 | iso_buf += 8; | |
422 | /* This marks a new frame */ | |
423 | if (fb->v4lbuf.bytesused != 0 | |
424 | && fb->v4lbuf.bytesused != dev->frame_size) { | |
425 | (void) (printk_ratelimit() && | |
426 | STK_ERROR("frame %d, " | |
427 | "bytesused=%d, skipping\n", | |
428 | i, fb->v4lbuf.bytesused)); | |
429 | fb->v4lbuf.bytesused = 0; | |
430 | fill = fb->buffer; | |
431 | } else if (fb->v4lbuf.bytesused == dev->frame_size) { | |
b1855907 JVJ |
432 | if (list_is_singular(&dev->sio_avail)) { |
433 | /* Always reuse the last buffer */ | |
434 | fb->v4lbuf.bytesused = 0; | |
435 | fill = fb->buffer; | |
436 | } else { | |
437 | list_move_tail(dev->sio_avail.next, | |
438 | &dev->sio_full); | |
439 | wake_up(&dev->wait_frame); | |
440 | fb = list_first_entry(&dev->sio_avail, | |
441 | struct stk_sio_buffer, list); | |
442 | fb->v4lbuf.bytesused = 0; | |
443 | fill = fb->buffer; | |
ec16dae5 | 444 | } |
ec16dae5 JVJ |
445 | } |
446 | } else { | |
447 | framelen -= 4; | |
448 | iso_buf += 4; | |
449 | } | |
450 | ||
451 | /* Our buffer is full !!! */ | |
452 | if (framelen + fb->v4lbuf.bytesused > dev->frame_size) { | |
453 | (void) (printk_ratelimit() && | |
454 | STK_ERROR("Frame buffer overflow, lost sync\n")); | |
455 | /*FIXME Do something here? */ | |
456 | continue; | |
457 | } | |
458 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
459 | memcpy(fill, iso_buf, framelen); | |
460 | spin_lock_irqsave(&dev->spinlock, flags); | |
461 | fill += framelen; | |
462 | ||
463 | /* New size of our buffer */ | |
464 | fb->v4lbuf.bytesused += framelen; | |
465 | } | |
466 | ||
467 | resubmit: | |
468 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
469 | urb->dev = dev->udev; | |
470 | ret = usb_submit_urb(urb, GFP_ATOMIC); | |
471 | if (ret != 0) { | |
472 | STK_ERROR("Error (%d) re-submitting urb in stk_isoc_handler.\n", | |
473 | ret); | |
474 | } | |
475 | } | |
476 | ||
477 | /* -------------------------------------------- */ | |
478 | ||
479 | static int stk_prepare_iso(struct stk_camera *dev) | |
480 | { | |
481 | void *kbuf; | |
482 | int i, j; | |
483 | struct urb *urb; | |
484 | struct usb_device *udev; | |
485 | ||
486 | if (dev == NULL) | |
487 | return -ENXIO; | |
488 | udev = dev->udev; | |
489 | ||
490 | if (dev->isobufs) | |
491 | STK_ERROR("isobufs already allocated. Bad\n"); | |
492 | else | |
493 | dev->isobufs = kzalloc(MAX_ISO_BUFS * sizeof(*dev->isobufs), | |
494 | GFP_KERNEL); | |
495 | if (dev->isobufs == NULL) { | |
496 | STK_ERROR("Unable to allocate iso buffers\n"); | |
497 | return -ENOMEM; | |
498 | } | |
499 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
500 | if (dev->isobufs[i].data == NULL) { | |
501 | kbuf = kzalloc(ISO_BUFFER_SIZE, GFP_KERNEL); | |
502 | if (kbuf == NULL) { | |
503 | STK_ERROR("Failed to allocate iso buffer %d\n", | |
504 | i); | |
505 | goto isobufs_out; | |
506 | } | |
507 | dev->isobufs[i].data = kbuf; | |
508 | } else | |
509 | STK_ERROR("isobuf data already allocated\n"); | |
510 | if (dev->isobufs[i].urb == NULL) { | |
511 | urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); | |
512 | if (urb == NULL) { | |
513 | STK_ERROR("Failed to allocate URB %d\n", i); | |
514 | goto isobufs_out; | |
515 | } | |
516 | dev->isobufs[i].urb = urb; | |
517 | } else { | |
518 | STK_ERROR("Killing URB\n"); | |
519 | usb_kill_urb(dev->isobufs[i].urb); | |
520 | urb = dev->isobufs[i].urb; | |
521 | } | |
522 | urb->interval = 1; | |
523 | urb->dev = udev; | |
524 | urb->pipe = usb_rcvisocpipe(udev, dev->isoc_ep); | |
525 | urb->transfer_flags = URB_ISO_ASAP; | |
526 | urb->transfer_buffer = dev->isobufs[i].data; | |
527 | urb->transfer_buffer_length = ISO_BUFFER_SIZE; | |
528 | urb->complete = stk_isoc_handler; | |
529 | urb->context = dev; | |
530 | urb->start_frame = 0; | |
531 | urb->number_of_packets = ISO_FRAMES_PER_DESC; | |
532 | ||
533 | for (j = 0; j < ISO_FRAMES_PER_DESC; j++) { | |
534 | urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE; | |
535 | urb->iso_frame_desc[j].length = ISO_MAX_FRAME_SIZE; | |
536 | } | |
537 | } | |
538 | set_memallocd(dev); | |
539 | return 0; | |
540 | ||
541 | isobufs_out: | |
542 | for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].data; i++) | |
543 | kfree(dev->isobufs[i].data); | |
544 | for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].urb; i++) | |
545 | usb_free_urb(dev->isobufs[i].urb); | |
546 | kfree(dev->isobufs); | |
547 | dev->isobufs = NULL; | |
548 | return -ENOMEM; | |
549 | } | |
550 | ||
551 | static void stk_clean_iso(struct stk_camera *dev) | |
552 | { | |
553 | int i; | |
554 | ||
555 | if (dev == NULL || dev->isobufs == NULL) | |
556 | return; | |
557 | ||
558 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
559 | struct urb *urb; | |
560 | ||
561 | urb = dev->isobufs[i].urb; | |
562 | if (urb) { | |
f051ae18 | 563 | if (atomic_read(&dev->urbs_used) && is_present(dev)) |
ec16dae5 JVJ |
564 | usb_kill_urb(urb); |
565 | usb_free_urb(urb); | |
566 | } | |
567 | kfree(dev->isobufs[i].data); | |
568 | } | |
569 | kfree(dev->isobufs); | |
570 | dev->isobufs = NULL; | |
571 | unset_memallocd(dev); | |
572 | } | |
573 | ||
574 | static int stk_setup_siobuf(struct stk_camera *dev, int index) | |
575 | { | |
576 | struct stk_sio_buffer *buf = dev->sio_bufs + index; | |
577 | INIT_LIST_HEAD(&buf->list); | |
578 | buf->v4lbuf.length = PAGE_ALIGN(dev->frame_size); | |
579 | buf->buffer = vmalloc_user(buf->v4lbuf.length); | |
580 | if (buf->buffer == NULL) | |
581 | return -ENOMEM; | |
582 | buf->mapcount = 0; | |
583 | buf->dev = dev; | |
584 | buf->v4lbuf.index = index; | |
585 | buf->v4lbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
586 | buf->v4lbuf.field = V4L2_FIELD_NONE; | |
587 | buf->v4lbuf.memory = V4L2_MEMORY_MMAP; | |
588 | buf->v4lbuf.m.offset = 2*index*buf->v4lbuf.length; | |
589 | return 0; | |
590 | } | |
591 | ||
592 | static int stk_free_sio_buffers(struct stk_camera *dev) | |
593 | { | |
594 | int i; | |
595 | int nbufs; | |
596 | unsigned long flags; | |
597 | if (dev->n_sbufs == 0 || dev->sio_bufs == NULL) | |
598 | return 0; | |
599 | /* | |
600 | * If any buffers are mapped, we cannot free them at all. | |
601 | */ | |
602 | for (i = 0; i < dev->n_sbufs; i++) { | |
603 | if (dev->sio_bufs[i].mapcount > 0) | |
604 | return -EBUSY; | |
605 | } | |
606 | /* | |
607 | * OK, let's do it. | |
608 | */ | |
609 | spin_lock_irqsave(&dev->spinlock, flags); | |
610 | INIT_LIST_HEAD(&dev->sio_avail); | |
611 | INIT_LIST_HEAD(&dev->sio_full); | |
612 | nbufs = dev->n_sbufs; | |
613 | dev->n_sbufs = 0; | |
614 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
615 | for (i = 0; i < nbufs; i++) { | |
616 | if (dev->sio_bufs[i].buffer != NULL) | |
617 | vfree(dev->sio_bufs[i].buffer); | |
618 | } | |
619 | kfree(dev->sio_bufs); | |
620 | dev->sio_bufs = NULL; | |
621 | return 0; | |
622 | } | |
623 | ||
624 | static int stk_prepare_sio_buffers(struct stk_camera *dev, unsigned n_sbufs) | |
625 | { | |
626 | int i; | |
627 | if (dev->sio_bufs != NULL) | |
628 | STK_ERROR("sio_bufs already allocated\n"); | |
629 | else { | |
630 | dev->sio_bufs = kzalloc(n_sbufs * sizeof(struct stk_sio_buffer), | |
631 | GFP_KERNEL); | |
632 | if (dev->sio_bufs == NULL) | |
633 | return -ENOMEM; | |
634 | for (i = 0; i < n_sbufs; i++) { | |
635 | if (stk_setup_siobuf(dev, i)) | |
636 | return (dev->n_sbufs > 1)? 0 : -ENOMEM; | |
637 | dev->n_sbufs = i+1; | |
638 | } | |
639 | } | |
640 | return 0; | |
641 | } | |
642 | ||
643 | static int stk_allocate_buffers(struct stk_camera *dev, unsigned n_sbufs) | |
644 | { | |
645 | int err; | |
646 | err = stk_prepare_iso(dev); | |
647 | if (err) { | |
648 | stk_clean_iso(dev); | |
649 | return err; | |
650 | } | |
651 | err = stk_prepare_sio_buffers(dev, n_sbufs); | |
652 | if (err) { | |
653 | stk_free_sio_buffers(dev); | |
654 | return err; | |
655 | } | |
656 | return 0; | |
657 | } | |
658 | ||
659 | static void stk_free_buffers(struct stk_camera *dev) | |
660 | { | |
661 | stk_clean_iso(dev); | |
662 | stk_free_sio_buffers(dev); | |
663 | } | |
664 | /* -------------------------------------------- */ | |
665 | ||
666 | /* v4l file operations */ | |
667 | ||
bec43661 | 668 | static int v4l_stk_open(struct file *fp) |
ec16dae5 JVJ |
669 | { |
670 | struct stk_camera *dev; | |
671 | struct video_device *vdev; | |
672 | ||
673 | vdev = video_devdata(fp); | |
674 | dev = vdev_to_camera(vdev); | |
675 | ||
d56dc612 HV |
676 | lock_kernel(); |
677 | if (dev == NULL || !is_present(dev)) { | |
678 | unlock_kernel(); | |
ec16dae5 | 679 | return -ENXIO; |
d56dc612 | 680 | } |
4aaec3ea | 681 | fp->private_data = dev; |
1fdd61c0 | 682 | usb_autopm_get_interface(dev->interface); |
d56dc612 | 683 | unlock_kernel(); |
ec16dae5 JVJ |
684 | |
685 | return 0; | |
686 | } | |
687 | ||
bec43661 | 688 | static int v4l_stk_release(struct file *fp) |
ec16dae5 | 689 | { |
4aaec3ea | 690 | struct stk_camera *dev = fp->private_data; |
ec16dae5 | 691 | |
f051ae18 DE |
692 | if (dev->owner == fp) { |
693 | stk_stop_stream(dev); | |
694 | stk_free_buffers(dev); | |
695 | dev->owner = NULL; | |
ec16dae5 JVJ |
696 | } |
697 | ||
f051ae18 DE |
698 | if(is_present(dev)) |
699 | usb_autopm_put_interface(dev->interface); | |
ec16dae5 JVJ |
700 | |
701 | return 0; | |
702 | } | |
703 | ||
704 | static ssize_t v4l_stk_read(struct file *fp, char __user *buf, | |
705 | size_t count, loff_t *f_pos) | |
706 | { | |
707 | int i; | |
708 | int ret; | |
709 | unsigned long flags; | |
ec16dae5 | 710 | struct stk_sio_buffer *sbuf; |
4aaec3ea | 711 | struct stk_camera *dev = fp->private_data; |
ec16dae5 | 712 | |
ec16dae5 JVJ |
713 | if (!is_present(dev)) |
714 | return -EIO; | |
715 | if (dev->owner && dev->owner != fp) | |
716 | return -EBUSY; | |
717 | dev->owner = fp; | |
718 | if (!is_streaming(dev)) { | |
719 | if (stk_initialise(dev) | |
720 | || stk_allocate_buffers(dev, 3) | |
721 | || stk_start_stream(dev)) | |
722 | return -ENOMEM; | |
723 | spin_lock_irqsave(&dev->spinlock, flags); | |
724 | for (i = 0; i < dev->n_sbufs; i++) { | |
725 | list_add_tail(&dev->sio_bufs[i].list, &dev->sio_avail); | |
726 | dev->sio_bufs[i].v4lbuf.flags = V4L2_BUF_FLAG_QUEUED; | |
727 | } | |
728 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
729 | } | |
730 | if (*f_pos == 0) { | |
731 | if (fp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full)) | |
732 | return -EWOULDBLOCK; | |
733 | ret = wait_event_interruptible(dev->wait_frame, | |
734 | !list_empty(&dev->sio_full) || !is_present(dev)); | |
735 | if (ret) | |
736 | return ret; | |
737 | if (!is_present(dev)) | |
738 | return -EIO; | |
739 | } | |
740 | if (count + *f_pos > dev->frame_size) | |
741 | count = dev->frame_size - *f_pos; | |
742 | spin_lock_irqsave(&dev->spinlock, flags); | |
743 | if (list_empty(&dev->sio_full)) { | |
744 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
745 | STK_ERROR("BUG: No siobufs ready\n"); | |
746 | return 0; | |
747 | } | |
748 | sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list); | |
749 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
750 | ||
751 | if (copy_to_user(buf, sbuf->buffer + *f_pos, count)) | |
752 | return -EFAULT; | |
753 | ||
754 | *f_pos += count; | |
755 | ||
756 | if (*f_pos >= dev->frame_size) { | |
757 | *f_pos = 0; | |
758 | spin_lock_irqsave(&dev->spinlock, flags); | |
759 | list_move_tail(&sbuf->list, &dev->sio_avail); | |
760 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
761 | } | |
762 | return count; | |
763 | } | |
764 | ||
765 | static unsigned int v4l_stk_poll(struct file *fp, poll_table *wait) | |
766 | { | |
4aaec3ea | 767 | struct stk_camera *dev = fp->private_data; |
ec16dae5 | 768 | |
ec16dae5 JVJ |
769 | poll_wait(fp, &dev->wait_frame, wait); |
770 | ||
771 | if (!is_present(dev)) | |
772 | return POLLERR; | |
773 | ||
774 | if (!list_empty(&dev->sio_full)) | |
775 | return (POLLIN | POLLRDNORM); | |
776 | ||
777 | return 0; | |
778 | } | |
779 | ||
780 | ||
781 | static void stk_v4l_vm_open(struct vm_area_struct *vma) | |
782 | { | |
783 | struct stk_sio_buffer *sbuf = vma->vm_private_data; | |
784 | sbuf->mapcount++; | |
785 | } | |
786 | static void stk_v4l_vm_close(struct vm_area_struct *vma) | |
787 | { | |
788 | struct stk_sio_buffer *sbuf = vma->vm_private_data; | |
789 | sbuf->mapcount--; | |
790 | if (sbuf->mapcount == 0) | |
791 | sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_MAPPED; | |
792 | } | |
f0f37e2f | 793 | static const struct vm_operations_struct stk_v4l_vm_ops = { |
ec16dae5 JVJ |
794 | .open = stk_v4l_vm_open, |
795 | .close = stk_v4l_vm_close | |
796 | }; | |
797 | ||
798 | static int v4l_stk_mmap(struct file *fp, struct vm_area_struct *vma) | |
799 | { | |
800 | unsigned int i; | |
801 | int ret; | |
802 | unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; | |
4aaec3ea | 803 | struct stk_camera *dev = fp->private_data; |
ec16dae5 JVJ |
804 | struct stk_sio_buffer *sbuf = NULL; |
805 | ||
806 | if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED)) | |
807 | return -EINVAL; | |
808 | ||
ec16dae5 JVJ |
809 | for (i = 0; i < dev->n_sbufs; i++) { |
810 | if (dev->sio_bufs[i].v4lbuf.m.offset == offset) { | |
811 | sbuf = dev->sio_bufs + i; | |
812 | break; | |
813 | } | |
814 | } | |
815 | if (sbuf == NULL) | |
816 | return -EINVAL; | |
817 | ret = remap_vmalloc_range(vma, sbuf->buffer, 0); | |
818 | if (ret) | |
819 | return ret; | |
820 | vma->vm_flags |= VM_DONTEXPAND; | |
821 | vma->vm_private_data = sbuf; | |
822 | vma->vm_ops = &stk_v4l_vm_ops; | |
823 | sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_MAPPED; | |
824 | stk_v4l_vm_open(vma); | |
825 | return 0; | |
826 | } | |
827 | ||
828 | /* v4l ioctl handlers */ | |
829 | ||
830 | static int stk_vidioc_querycap(struct file *filp, | |
831 | void *priv, struct v4l2_capability *cap) | |
832 | { | |
833 | strcpy(cap->driver, "stk"); | |
834 | strcpy(cap->card, "stk"); | |
835 | cap->version = DRIVER_VERSION_NUM; | |
836 | ||
837 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | |
838 | | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; | |
839 | return 0; | |
840 | } | |
841 | ||
842 | static int stk_vidioc_enum_input(struct file *filp, | |
843 | void *priv, struct v4l2_input *input) | |
844 | { | |
845 | if (input->index != 0) | |
846 | return -EINVAL; | |
847 | ||
848 | strcpy(input->name, "Syntek USB Camera"); | |
849 | input->type = V4L2_INPUT_TYPE_CAMERA; | |
850 | return 0; | |
851 | } | |
852 | ||
853 | ||
854 | static int stk_vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
855 | { | |
856 | *i = 0; | |
857 | return 0; | |
858 | } | |
859 | ||
860 | static int stk_vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
861 | { | |
862 | if (i != 0) | |
863 | return -EINVAL; | |
864 | else | |
865 | return 0; | |
866 | } | |
867 | ||
868 | /* from vivi.c */ | |
869 | static int stk_vidioc_s_std(struct file *filp, void *priv, v4l2_std_id *a) | |
870 | { | |
871 | return 0; | |
872 | } | |
873 | ||
874 | /* List of all V4Lv2 controls supported by the driver */ | |
875 | static struct v4l2_queryctrl stk_controls[] = { | |
876 | { | |
877 | .id = V4L2_CID_BRIGHTNESS, | |
878 | .type = V4L2_CTRL_TYPE_INTEGER, | |
879 | .name = "Brightness", | |
880 | .minimum = 0, | |
881 | .maximum = 0xffff, | |
882 | .step = 0x0100, | |
883 | .default_value = 0x6000, | |
884 | }, | |
885 | /*TODO: get more controls to work */ | |
886 | }; | |
887 | ||
888 | static int stk_vidioc_queryctrl(struct file *filp, | |
889 | void *priv, struct v4l2_queryctrl *c) | |
890 | { | |
891 | int i; | |
892 | int nbr; | |
893 | nbr = ARRAY_SIZE(stk_controls); | |
894 | ||
895 | for (i = 0; i < nbr; i++) { | |
896 | if (stk_controls[i].id == c->id) { | |
897 | memcpy(c, &stk_controls[i], | |
898 | sizeof(struct v4l2_queryctrl)); | |
899 | return 0; | |
900 | } | |
901 | } | |
902 | return -EINVAL; | |
903 | } | |
904 | ||
905 | static int stk_vidioc_g_ctrl(struct file *filp, | |
906 | void *priv, struct v4l2_control *c) | |
907 | { | |
908 | struct stk_camera *dev = priv; | |
909 | switch (c->id) { | |
910 | case V4L2_CID_BRIGHTNESS: | |
911 | c->value = dev->vsettings.brightness; | |
912 | break; | |
913 | default: | |
914 | return -EINVAL; | |
915 | } | |
916 | return 0; | |
917 | } | |
918 | ||
919 | static int stk_vidioc_s_ctrl(struct file *filp, | |
920 | void *priv, struct v4l2_control *c) | |
921 | { | |
922 | struct stk_camera *dev = priv; | |
923 | switch (c->id) { | |
924 | case V4L2_CID_BRIGHTNESS: | |
925 | dev->vsettings.brightness = c->value; | |
926 | return stk_sensor_set_brightness(dev, c->value >> 8); | |
927 | default: | |
928 | return -EINVAL; | |
929 | } | |
930 | return 0; | |
931 | } | |
932 | ||
933 | ||
78b526a4 | 934 | static int stk_vidioc_enum_fmt_vid_cap(struct file *filp, |
ec16dae5 JVJ |
935 | void *priv, struct v4l2_fmtdesc *fmtd) |
936 | { | |
ec16dae5 JVJ |
937 | switch (fmtd->index) { |
938 | case 0: | |
939 | fmtd->pixelformat = V4L2_PIX_FMT_RGB565; | |
940 | strcpy(fmtd->description, "r5g6b5"); | |
941 | break; | |
942 | case 1: | |
943 | fmtd->pixelformat = V4L2_PIX_FMT_RGB565X; | |
944 | strcpy(fmtd->description, "r5g6b5BE"); | |
945 | break; | |
946 | case 2: | |
947 | fmtd->pixelformat = V4L2_PIX_FMT_UYVY; | |
948 | strcpy(fmtd->description, "yuv4:2:2"); | |
949 | break; | |
950 | case 3: | |
951 | fmtd->pixelformat = V4L2_PIX_FMT_SBGGR8; | |
952 | strcpy(fmtd->description, "Raw bayer"); | |
953 | break; | |
1112fb68 JVJ |
954 | case 4: |
955 | fmtd->pixelformat = V4L2_PIX_FMT_YUYV; | |
956 | strcpy(fmtd->description, "yuv4:2:2"); | |
957 | break; | |
ec16dae5 JVJ |
958 | default: |
959 | return -EINVAL; | |
960 | } | |
961 | return 0; | |
962 | } | |
963 | ||
964 | static struct stk_size { | |
965 | unsigned w; | |
966 | unsigned h; | |
967 | enum stk_mode m; | |
968 | } stk_sizes[] = { | |
969 | { .w = 1280, .h = 1024, .m = MODE_SXGA, }, | |
970 | { .w = 640, .h = 480, .m = MODE_VGA, }, | |
971 | { .w = 352, .h = 288, .m = MODE_CIF, }, | |
972 | { .w = 320, .h = 240, .m = MODE_QVGA, }, | |
973 | { .w = 176, .h = 144, .m = MODE_QCIF, }, | |
974 | }; | |
975 | ||
78b526a4 | 976 | static int stk_vidioc_g_fmt_vid_cap(struct file *filp, |
ec16dae5 JVJ |
977 | void *priv, struct v4l2_format *f) |
978 | { | |
979 | struct v4l2_pix_format *pix_format = &f->fmt.pix; | |
980 | struct stk_camera *dev = priv; | |
981 | int i; | |
982 | ||
983 | for (i = 0; i < ARRAY_SIZE(stk_sizes) | |
984 | && stk_sizes[i].m != dev->vsettings.mode; | |
985 | i++); | |
986 | if (i == ARRAY_SIZE(stk_sizes)) { | |
987 | STK_ERROR("ERROR: mode invalid\n"); | |
988 | return -EINVAL; | |
989 | } | |
990 | pix_format->width = stk_sizes[i].w; | |
991 | pix_format->height = stk_sizes[i].h; | |
992 | pix_format->field = V4L2_FIELD_NONE; | |
993 | pix_format->colorspace = V4L2_COLORSPACE_SRGB; | |
ec16dae5 JVJ |
994 | pix_format->pixelformat = dev->vsettings.palette; |
995 | if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8) | |
996 | pix_format->bytesperline = pix_format->width; | |
997 | else | |
998 | pix_format->bytesperline = 2 * pix_format->width; | |
999 | pix_format->sizeimage = pix_format->bytesperline | |
1000 | * pix_format->height; | |
1001 | return 0; | |
1002 | } | |
1003 | ||
78b526a4 | 1004 | static int stk_vidioc_try_fmt_vid_cap(struct file *filp, |
ec16dae5 JVJ |
1005 | void *priv, struct v4l2_format *fmtd) |
1006 | { | |
1007 | int i; | |
1008 | switch (fmtd->fmt.pix.pixelformat) { | |
1009 | case V4L2_PIX_FMT_RGB565: | |
1010 | case V4L2_PIX_FMT_RGB565X: | |
1011 | case V4L2_PIX_FMT_UYVY: | |
1112fb68 | 1012 | case V4L2_PIX_FMT_YUYV: |
ec16dae5 JVJ |
1013 | case V4L2_PIX_FMT_SBGGR8: |
1014 | break; | |
1015 | default: | |
1016 | return -EINVAL; | |
1017 | } | |
1018 | for (i = 1; i < ARRAY_SIZE(stk_sizes); i++) { | |
1019 | if (fmtd->fmt.pix.width > stk_sizes[i].w) | |
1020 | break; | |
1021 | } | |
1022 | if (i == ARRAY_SIZE(stk_sizes) | |
1023 | || (abs(fmtd->fmt.pix.width - stk_sizes[i-1].w) | |
1024 | < abs(fmtd->fmt.pix.width - stk_sizes[i].w))) { | |
1025 | fmtd->fmt.pix.height = stk_sizes[i-1].h; | |
1026 | fmtd->fmt.pix.width = stk_sizes[i-1].w; | |
1027 | fmtd->fmt.pix.priv = i - 1; | |
1028 | } else { | |
1029 | fmtd->fmt.pix.height = stk_sizes[i].h; | |
1030 | fmtd->fmt.pix.width = stk_sizes[i].w; | |
1031 | fmtd->fmt.pix.priv = i; | |
1032 | } | |
1033 | ||
1034 | fmtd->fmt.pix.field = V4L2_FIELD_NONE; | |
1035 | fmtd->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; | |
1036 | if (fmtd->fmt.pix.pixelformat == V4L2_PIX_FMT_SBGGR8) | |
1037 | fmtd->fmt.pix.bytesperline = fmtd->fmt.pix.width; | |
1038 | else | |
1039 | fmtd->fmt.pix.bytesperline = 2 * fmtd->fmt.pix.width; | |
1040 | fmtd->fmt.pix.sizeimage = fmtd->fmt.pix.bytesperline | |
1041 | * fmtd->fmt.pix.height; | |
1042 | return 0; | |
1043 | } | |
1044 | ||
1fdd61c0 JVJ |
1045 | static int stk_setup_format(struct stk_camera *dev) |
1046 | { | |
1047 | int i = 0; | |
1048 | int depth; | |
1049 | if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8) | |
1050 | depth = 1; | |
1051 | else | |
1052 | depth = 2; | |
77f2c2db RK |
1053 | while (i < ARRAY_SIZE(stk_sizes) && |
1054 | stk_sizes[i].m != dev->vsettings.mode) | |
1fdd61c0 JVJ |
1055 | i++; |
1056 | if (i == ARRAY_SIZE(stk_sizes)) { | |
7e28adb2 | 1057 | STK_ERROR("Something is broken in %s\n", __func__); |
1fdd61c0 JVJ |
1058 | return -EFAULT; |
1059 | } | |
1060 | /* This registers controls some timings, not sure of what. */ | |
1061 | stk_camera_write_reg(dev, 0x001b, 0x0e); | |
1062 | if (dev->vsettings.mode == MODE_SXGA) | |
1063 | stk_camera_write_reg(dev, 0x001c, 0x0e); | |
1064 | else | |
1065 | stk_camera_write_reg(dev, 0x001c, 0x46); | |
1066 | /* | |
1067 | * Registers 0x0115 0x0114 are the size of each line (bytes), | |
1068 | * regs 0x0117 0x0116 are the heigth of the image. | |
1069 | */ | |
1070 | stk_camera_write_reg(dev, 0x0115, | |
1071 | ((stk_sizes[i].w * depth) >> 8) & 0xff); | |
1072 | stk_camera_write_reg(dev, 0x0114, | |
1073 | (stk_sizes[i].w * depth) & 0xff); | |
1074 | stk_camera_write_reg(dev, 0x0117, | |
1075 | (stk_sizes[i].h >> 8) & 0xff); | |
1076 | stk_camera_write_reg(dev, 0x0116, | |
1077 | stk_sizes[i].h & 0xff); | |
1078 | return stk_sensor_configure(dev); | |
1079 | } | |
1080 | ||
78b526a4 | 1081 | static int stk_vidioc_s_fmt_vid_cap(struct file *filp, |
ec16dae5 JVJ |
1082 | void *priv, struct v4l2_format *fmtd) |
1083 | { | |
1084 | int ret; | |
1085 | struct stk_camera *dev = priv; | |
1086 | ||
1087 | if (dev == NULL) | |
1088 | return -ENODEV; | |
1089 | if (!is_present(dev)) | |
1090 | return -ENODEV; | |
1091 | if (is_streaming(dev)) | |
1092 | return -EBUSY; | |
1093 | if (dev->owner && dev->owner != filp) | |
1094 | return -EBUSY; | |
78b526a4 | 1095 | ret = stk_vidioc_try_fmt_vid_cap(filp, priv, fmtd); |
ec16dae5 JVJ |
1096 | if (ret) |
1097 | return ret; | |
1fdd61c0 | 1098 | dev->owner = filp; |
ec16dae5 JVJ |
1099 | |
1100 | dev->vsettings.palette = fmtd->fmt.pix.pixelformat; | |
1101 | stk_free_buffers(dev); | |
1102 | dev->frame_size = fmtd->fmt.pix.sizeimage; | |
1103 | dev->vsettings.mode = stk_sizes[fmtd->fmt.pix.priv].m; | |
1104 | ||
1105 | stk_initialise(dev); | |
1fdd61c0 | 1106 | return stk_setup_format(dev); |
ec16dae5 JVJ |
1107 | } |
1108 | ||
1109 | static int stk_vidioc_reqbufs(struct file *filp, | |
1110 | void *priv, struct v4l2_requestbuffers *rb) | |
1111 | { | |
1112 | struct stk_camera *dev = priv; | |
1113 | ||
1114 | if (dev == NULL) | |
1115 | return -ENODEV; | |
ec16dae5 JVJ |
1116 | if (rb->memory != V4L2_MEMORY_MMAP) |
1117 | return -EINVAL; | |
1118 | if (is_streaming(dev) | |
1119 | || (dev->owner && dev->owner != filp)) | |
1120 | return -EBUSY; | |
1121 | dev->owner = filp; | |
1122 | ||
1123 | /*FIXME If they ask for zero, we must stop streaming and free */ | |
1124 | if (rb->count < 3) | |
1125 | rb->count = 3; | |
1126 | /* Arbitrary limit */ | |
1127 | else if (rb->count > 5) | |
1128 | rb->count = 5; | |
1129 | ||
1130 | stk_allocate_buffers(dev, rb->count); | |
1131 | rb->count = dev->n_sbufs; | |
1132 | return 0; | |
1133 | } | |
1134 | ||
1135 | static int stk_vidioc_querybuf(struct file *filp, | |
1136 | void *priv, struct v4l2_buffer *buf) | |
1137 | { | |
ec16dae5 JVJ |
1138 | struct stk_camera *dev = priv; |
1139 | struct stk_sio_buffer *sbuf; | |
1140 | ||
223ffe5f | 1141 | if (buf->index >= dev->n_sbufs) |
ec16dae5 JVJ |
1142 | return -EINVAL; |
1143 | sbuf = dev->sio_bufs + buf->index; | |
1144 | *buf = sbuf->v4lbuf; | |
1145 | return 0; | |
1146 | } | |
1147 | ||
1148 | static int stk_vidioc_qbuf(struct file *filp, | |
1149 | void *priv, struct v4l2_buffer *buf) | |
1150 | { | |
1151 | struct stk_camera *dev = priv; | |
1152 | struct stk_sio_buffer *sbuf; | |
1153 | unsigned long flags; | |
ec16dae5 JVJ |
1154 | |
1155 | if (buf->memory != V4L2_MEMORY_MMAP) | |
1156 | return -EINVAL; | |
1157 | ||
223ffe5f | 1158 | if (buf->index >= dev->n_sbufs) |
ec16dae5 JVJ |
1159 | return -EINVAL; |
1160 | sbuf = dev->sio_bufs + buf->index; | |
1161 | if (sbuf->v4lbuf.flags & V4L2_BUF_FLAG_QUEUED) | |
1162 | return 0; | |
1163 | sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_QUEUED; | |
1164 | sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_DONE; | |
1165 | spin_lock_irqsave(&dev->spinlock, flags); | |
1166 | list_add_tail(&sbuf->list, &dev->sio_avail); | |
1167 | *buf = sbuf->v4lbuf; | |
1168 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1169 | return 0; | |
1170 | } | |
1171 | ||
1172 | static int stk_vidioc_dqbuf(struct file *filp, | |
1173 | void *priv, struct v4l2_buffer *buf) | |
1174 | { | |
1175 | struct stk_camera *dev = priv; | |
1176 | struct stk_sio_buffer *sbuf; | |
1177 | unsigned long flags; | |
1178 | int ret; | |
1179 | ||
2509e1cb | 1180 | if (!is_streaming(dev)) |
ec16dae5 JVJ |
1181 | return -EINVAL; |
1182 | ||
1183 | if (filp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full)) | |
1184 | return -EWOULDBLOCK; | |
1185 | ret = wait_event_interruptible(dev->wait_frame, | |
1186 | !list_empty(&dev->sio_full) || !is_present(dev)); | |
1187 | if (ret) | |
1188 | return ret; | |
1189 | if (!is_present(dev)) | |
1190 | return -EIO; | |
1191 | ||
1192 | spin_lock_irqsave(&dev->spinlock, flags); | |
1193 | sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list); | |
1194 | list_del_init(&sbuf->list); | |
1195 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1196 | sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_QUEUED; | |
1197 | sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_DONE; | |
1198 | sbuf->v4lbuf.sequence = ++dev->sequence; | |
1199 | do_gettimeofday(&sbuf->v4lbuf.timestamp); | |
1200 | ||
1201 | *buf = sbuf->v4lbuf; | |
1202 | return 0; | |
1203 | } | |
1204 | ||
1205 | static int stk_vidioc_streamon(struct file *filp, | |
1206 | void *priv, enum v4l2_buf_type type) | |
1207 | { | |
1208 | struct stk_camera *dev = priv; | |
1209 | if (is_streaming(dev)) | |
1210 | return 0; | |
1211 | if (dev->sio_bufs == NULL) | |
1212 | return -EINVAL; | |
1213 | dev->sequence = 0; | |
1214 | return stk_start_stream(dev); | |
1215 | } | |
1216 | ||
1217 | static int stk_vidioc_streamoff(struct file *filp, | |
1218 | void *priv, enum v4l2_buf_type type) | |
1219 | { | |
1220 | struct stk_camera *dev = priv; | |
1221 | unsigned long flags; | |
1222 | int i; | |
1223 | stk_stop_stream(dev); | |
1224 | spin_lock_irqsave(&dev->spinlock, flags); | |
1225 | INIT_LIST_HEAD(&dev->sio_avail); | |
1226 | INIT_LIST_HEAD(&dev->sio_full); | |
1227 | for (i = 0; i < dev->n_sbufs; i++) { | |
1228 | INIT_LIST_HEAD(&dev->sio_bufs[i].list); | |
1229 | dev->sio_bufs[i].v4lbuf.flags = 0; | |
1230 | } | |
1231 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1232 | return 0; | |
1233 | } | |
1234 | ||
1235 | ||
1236 | static int stk_vidioc_g_parm(struct file *filp, | |
1237 | void *priv, struct v4l2_streamparm *sp) | |
1238 | { | |
ec16dae5 JVJ |
1239 | /*FIXME This is not correct */ |
1240 | sp->parm.capture.timeperframe.numerator = 1; | |
1241 | sp->parm.capture.timeperframe.denominator = 30; | |
1242 | sp->parm.capture.readbuffers = 2; | |
ec16dae5 JVJ |
1243 | return 0; |
1244 | } | |
1245 | ||
126be90f JVJ |
1246 | static int stk_vidioc_enum_framesizes(struct file *filp, |
1247 | void *priv, struct v4l2_frmsizeenum *frms) | |
1248 | { | |
1249 | if (frms->index >= ARRAY_SIZE(stk_sizes)) | |
1250 | return -EINVAL; | |
1251 | switch (frms->pixel_format) { | |
1252 | case V4L2_PIX_FMT_RGB565: | |
1253 | case V4L2_PIX_FMT_RGB565X: | |
1254 | case V4L2_PIX_FMT_UYVY: | |
1255 | case V4L2_PIX_FMT_YUYV: | |
1256 | case V4L2_PIX_FMT_SBGGR8: | |
1257 | frms->type = V4L2_FRMSIZE_TYPE_DISCRETE; | |
1258 | frms->discrete.width = stk_sizes[frms->index].w; | |
1259 | frms->discrete.height = stk_sizes[frms->index].h; | |
1260 | return 0; | |
1261 | default: return -EINVAL; | |
1262 | } | |
1263 | } | |
1264 | ||
bec43661 | 1265 | static struct v4l2_file_operations v4l_stk_fops = { |
ec16dae5 JVJ |
1266 | .owner = THIS_MODULE, |
1267 | .open = v4l_stk_open, | |
1268 | .release = v4l_stk_release, | |
1269 | .read = v4l_stk_read, | |
1270 | .poll = v4l_stk_poll, | |
1271 | .mmap = v4l_stk_mmap, | |
1272 | .ioctl = video_ioctl2, | |
ec16dae5 JVJ |
1273 | }; |
1274 | ||
a399810c | 1275 | static const struct v4l2_ioctl_ops v4l_stk_ioctl_ops = { |
ec16dae5 | 1276 | .vidioc_querycap = stk_vidioc_querycap, |
78b526a4 HV |
1277 | .vidioc_enum_fmt_vid_cap = stk_vidioc_enum_fmt_vid_cap, |
1278 | .vidioc_try_fmt_vid_cap = stk_vidioc_try_fmt_vid_cap, | |
1279 | .vidioc_s_fmt_vid_cap = stk_vidioc_s_fmt_vid_cap, | |
1280 | .vidioc_g_fmt_vid_cap = stk_vidioc_g_fmt_vid_cap, | |
ec16dae5 JVJ |
1281 | .vidioc_enum_input = stk_vidioc_enum_input, |
1282 | .vidioc_s_input = stk_vidioc_s_input, | |
1283 | .vidioc_g_input = stk_vidioc_g_input, | |
1284 | .vidioc_s_std = stk_vidioc_s_std, | |
1285 | .vidioc_reqbufs = stk_vidioc_reqbufs, | |
1286 | .vidioc_querybuf = stk_vidioc_querybuf, | |
1287 | .vidioc_qbuf = stk_vidioc_qbuf, | |
1288 | .vidioc_dqbuf = stk_vidioc_dqbuf, | |
1289 | .vidioc_streamon = stk_vidioc_streamon, | |
1290 | .vidioc_streamoff = stk_vidioc_streamoff, | |
1291 | .vidioc_queryctrl = stk_vidioc_queryctrl, | |
1292 | .vidioc_g_ctrl = stk_vidioc_g_ctrl, | |
1293 | .vidioc_s_ctrl = stk_vidioc_s_ctrl, | |
1294 | .vidioc_g_parm = stk_vidioc_g_parm, | |
126be90f | 1295 | .vidioc_enum_framesizes = stk_vidioc_enum_framesizes, |
ec16dae5 JVJ |
1296 | }; |
1297 | ||
a399810c HV |
1298 | static void stk_v4l_dev_release(struct video_device *vd) |
1299 | { | |
4aaec3ea DE |
1300 | struct stk_camera *dev = vdev_to_camera(vd); |
1301 | ||
1302 | if (dev->sio_bufs != NULL || dev->isobufs != NULL) | |
1303 | STK_ERROR("We are leaking memory\n"); | |
1304 | usb_put_intf(dev->interface); | |
1305 | kfree(dev); | |
a399810c HV |
1306 | } |
1307 | ||
1308 | static struct video_device stk_v4l_data = { | |
1309 | .name = "stkwebcam", | |
a399810c HV |
1310 | .minor = -1, |
1311 | .tvnorms = V4L2_STD_UNKNOWN, | |
1312 | .current_norm = V4L2_STD_UNKNOWN, | |
1313 | .fops = &v4l_stk_fops, | |
1314 | .ioctl_ops = &v4l_stk_ioctl_ops, | |
1315 | .release = stk_v4l_dev_release, | |
1316 | }; | |
1317 | ||
ec16dae5 JVJ |
1318 | |
1319 | static int stk_register_video_device(struct stk_camera *dev) | |
1320 | { | |
1321 | int err; | |
1322 | ||
1323 | dev->vdev = stk_v4l_data; | |
1324 | dev->vdev.debug = debug; | |
5e85e732 | 1325 | dev->vdev.parent = &dev->interface->dev; |
ec16dae5 JVJ |
1326 | err = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1); |
1327 | if (err) | |
1328 | STK_ERROR("v4l registration failed\n"); | |
1329 | else | |
1330 | STK_INFO("Syntek USB2.0 Camera is now controlling video device" | |
c6330fb8 | 1331 | " /dev/video%d\n", dev->vdev.num); |
ec16dae5 JVJ |
1332 | return err; |
1333 | } | |
1334 | ||
1335 | ||
1336 | /* USB Stuff */ | |
1337 | ||
1338 | static int stk_camera_probe(struct usb_interface *interface, | |
1339 | const struct usb_device_id *id) | |
1340 | { | |
1341 | int i; | |
4aaec3ea | 1342 | int err = 0; |
ec16dae5 JVJ |
1343 | |
1344 | struct stk_camera *dev = NULL; | |
1345 | struct usb_device *udev = interface_to_usbdev(interface); | |
1346 | struct usb_host_interface *iface_desc; | |
1347 | struct usb_endpoint_descriptor *endpoint; | |
1348 | ||
1349 | dev = kzalloc(sizeof(struct stk_camera), GFP_KERNEL); | |
1350 | if (dev == NULL) { | |
1351 | STK_ERROR("Out of memory !\n"); | |
1352 | return -ENOMEM; | |
1353 | } | |
1354 | ||
ec16dae5 JVJ |
1355 | spin_lock_init(&dev->spinlock); |
1356 | init_waitqueue_head(&dev->wait_frame); | |
1357 | ||
1358 | dev->udev = udev; | |
1359 | dev->interface = interface; | |
1360 | usb_get_intf(interface); | |
1361 | ||
1362 | dev->vsettings.vflip = vflip; | |
1363 | dev->vsettings.hflip = hflip; | |
1364 | dev->n_sbufs = 0; | |
1365 | set_present(dev); | |
1366 | ||
1367 | /* Set up the endpoint information | |
1368 | * use only the first isoc-in endpoint | |
1369 | * for the current alternate setting */ | |
1370 | iface_desc = interface->cur_altsetting; | |
1371 | ||
1372 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
1373 | endpoint = &iface_desc->endpoint[i].desc; | |
1374 | ||
1375 | if (!dev->isoc_ep | |
13417982 | 1376 | && usb_endpoint_is_isoc_in(endpoint)) { |
ec16dae5 | 1377 | /* we found an isoc in endpoint */ |
13417982 | 1378 | dev->isoc_ep = usb_endpoint_num(endpoint); |
ec16dae5 JVJ |
1379 | break; |
1380 | } | |
1381 | } | |
1382 | if (!dev->isoc_ep) { | |
1383 | STK_ERROR("Could not find isoc-in endpoint"); | |
4aaec3ea DE |
1384 | err = -ENODEV; |
1385 | goto error; | |
ec16dae5 JVJ |
1386 | } |
1387 | dev->vsettings.brightness = 0x7fff; | |
1388 | dev->vsettings.palette = V4L2_PIX_FMT_RGB565; | |
1389 | dev->vsettings.mode = MODE_VGA; | |
1112fb68 | 1390 | dev->frame_size = 640 * 480 * 2; |
ec16dae5 JVJ |
1391 | |
1392 | INIT_LIST_HEAD(&dev->sio_avail); | |
1393 | INIT_LIST_HEAD(&dev->sio_full); | |
1394 | ||
1395 | usb_set_intfdata(interface, dev); | |
1396 | ||
1397 | err = stk_register_video_device(dev); | |
1398 | if (err) { | |
4aaec3ea | 1399 | goto error; |
ec16dae5 JVJ |
1400 | } |
1401 | ||
1402 | stk_create_sysfs_files(&dev->vdev); | |
1403 | ||
1404 | return 0; | |
4aaec3ea DE |
1405 | |
1406 | error: | |
1407 | kfree(dev); | |
1408 | return err; | |
ec16dae5 JVJ |
1409 | } |
1410 | ||
1411 | static void stk_camera_disconnect(struct usb_interface *interface) | |
1412 | { | |
1413 | struct stk_camera *dev = usb_get_intfdata(interface); | |
1414 | ||
1415 | usb_set_intfdata(interface, NULL); | |
1416 | unset_present(dev); | |
1417 | ||
1418 | wake_up_interruptible(&dev->wait_frame); | |
1419 | stk_remove_sysfs_files(&dev->vdev); | |
1420 | ||
081d868f | 1421 | STK_INFO("Syntek USB2.0 Camera release resources " |
c6330fb8 | 1422 | "video device /dev/video%d\n", dev->vdev.num); |
4aaec3ea DE |
1423 | |
1424 | video_unregister_device(&dev->vdev); | |
ec16dae5 JVJ |
1425 | } |
1426 | ||
1fdd61c0 | 1427 | #ifdef CONFIG_PM |
4d34dccd | 1428 | static int stk_camera_suspend(struct usb_interface *intf, pm_message_t message) |
1fdd61c0 JVJ |
1429 | { |
1430 | struct stk_camera *dev = usb_get_intfdata(intf); | |
1431 | if (is_streaming(dev)) { | |
1432 | stk_stop_stream(dev); | |
1433 | /* yes, this is ugly */ | |
1434 | set_streaming(dev); | |
1435 | } | |
1436 | return 0; | |
1437 | } | |
1438 | ||
4d34dccd | 1439 | static int stk_camera_resume(struct usb_interface *intf) |
1fdd61c0 JVJ |
1440 | { |
1441 | struct stk_camera *dev = usb_get_intfdata(intf); | |
1442 | if (!is_initialised(dev)) | |
1443 | return 0; | |
1444 | unset_initialised(dev); | |
1445 | stk_initialise(dev); | |
1446 | stk_setup_format(dev); | |
1447 | if (is_streaming(dev)) | |
1448 | stk_start_stream(dev); | |
1449 | return 0; | |
1450 | } | |
1451 | #endif | |
1452 | ||
ec16dae5 JVJ |
1453 | static struct usb_driver stk_camera_driver = { |
1454 | .name = "stkwebcam", | |
1455 | .probe = stk_camera_probe, | |
1456 | .disconnect = stk_camera_disconnect, | |
1457 | .id_table = stkwebcam_table, | |
1fdd61c0 JVJ |
1458 | #ifdef CONFIG_PM |
1459 | .suspend = stk_camera_suspend, | |
1460 | .resume = stk_camera_resume, | |
1461 | #endif | |
ec16dae5 JVJ |
1462 | }; |
1463 | ||
1464 | ||
1465 | static int __init stk_camera_init(void) | |
1466 | { | |
1467 | int result; | |
1468 | ||
1469 | result = usb_register(&stk_camera_driver); | |
1470 | if (result) | |
1471 | STK_ERROR("usb_register failed ! Error number %d\n", result); | |
1472 | ||
1473 | ||
1474 | return result; | |
1475 | } | |
1476 | ||
1477 | static void __exit stk_camera_exit(void) | |
1478 | { | |
1479 | usb_deregister(&stk_camera_driver); | |
1480 | } | |
1481 | ||
1482 | module_init(stk_camera_init); | |
1483 | module_exit(stk_camera_exit); | |
1484 | ||
1485 |