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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 | ||
ec16dae5 JVJ |
233 | /* *********************************************** */ |
234 | /* | |
235 | * This function is called as an URB transfert is complete (Isochronous pipe). | |
236 | * So, the traitement is done in interrupt time, so it has be fast, not crash, | |
237 | * and not stall. Neat. | |
238 | */ | |
239 | static void stk_isoc_handler(struct urb *urb) | |
240 | { | |
241 | int i; | |
242 | int ret; | |
243 | int framelen; | |
244 | unsigned long flags; | |
245 | ||
246 | unsigned char *fill = NULL; | |
247 | unsigned char *iso_buf = NULL; | |
248 | ||
249 | struct stk_camera *dev; | |
250 | struct stk_sio_buffer *fb; | |
251 | ||
252 | dev = (struct stk_camera *) urb->context; | |
253 | ||
254 | if (dev == NULL) { | |
255 | STK_ERROR("isoc_handler called with NULL device !\n"); | |
256 | return; | |
257 | } | |
258 | ||
259 | if (urb->status == -ENOENT || urb->status == -ECONNRESET | |
260 | || urb->status == -ESHUTDOWN) { | |
261 | atomic_dec(&dev->urbs_used); | |
262 | return; | |
263 | } | |
264 | ||
265 | spin_lock_irqsave(&dev->spinlock, flags); | |
266 | ||
267 | if (urb->status != -EINPROGRESS && urb->status != 0) { | |
268 | STK_ERROR("isoc_handler: urb->status == %d\n", urb->status); | |
269 | goto resubmit; | |
270 | } | |
271 | ||
272 | if (list_empty(&dev->sio_avail)) { | |
273 | /*FIXME Stop streaming after a while */ | |
274 | (void) (printk_ratelimit() && | |
275 | STK_ERROR("isoc_handler without available buffer!\n")); | |
276 | goto resubmit; | |
277 | } | |
278 | fb = list_first_entry(&dev->sio_avail, | |
279 | struct stk_sio_buffer, list); | |
280 | fill = fb->buffer + fb->v4lbuf.bytesused; | |
281 | ||
282 | for (i = 0; i < urb->number_of_packets; i++) { | |
283 | if (urb->iso_frame_desc[i].status != 0) { | |
284 | if (urb->iso_frame_desc[i].status != -EXDEV) | |
285 | STK_ERROR("Frame %d has error %d\n", i, | |
286 | urb->iso_frame_desc[i].status); | |
287 | continue; | |
288 | } | |
289 | framelen = urb->iso_frame_desc[i].actual_length; | |
290 | iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset; | |
291 | ||
292 | if (framelen <= 4) | |
293 | continue; /* no data */ | |
294 | ||
295 | /* | |
296 | * we found something informational from there | |
297 | * the isoc frames have to type of headers | |
298 | * type1: 00 xx 00 00 or 20 xx 00 00 | |
299 | * type2: 80 xx 00 00 00 00 00 00 or a0 xx 00 00 00 00 00 00 | |
300 | * xx is a sequencer which has never been seen over 0x3f | |
301 | * imho data written down looks like bayer, i see similarities | |
302 | * after every 640 bytes | |
303 | */ | |
304 | if (*iso_buf & 0x80) { | |
305 | framelen -= 8; | |
306 | iso_buf += 8; | |
307 | /* This marks a new frame */ | |
308 | if (fb->v4lbuf.bytesused != 0 | |
309 | && fb->v4lbuf.bytesused != dev->frame_size) { | |
310 | (void) (printk_ratelimit() && | |
311 | STK_ERROR("frame %d, " | |
312 | "bytesused=%d, skipping\n", | |
313 | i, fb->v4lbuf.bytesused)); | |
314 | fb->v4lbuf.bytesused = 0; | |
315 | fill = fb->buffer; | |
316 | } else if (fb->v4lbuf.bytesused == dev->frame_size) { | |
b1855907 JVJ |
317 | if (list_is_singular(&dev->sio_avail)) { |
318 | /* Always reuse the last buffer */ | |
319 | fb->v4lbuf.bytesused = 0; | |
320 | fill = fb->buffer; | |
321 | } else { | |
322 | list_move_tail(dev->sio_avail.next, | |
323 | &dev->sio_full); | |
324 | wake_up(&dev->wait_frame); | |
325 | fb = list_first_entry(&dev->sio_avail, | |
326 | struct stk_sio_buffer, list); | |
327 | fb->v4lbuf.bytesused = 0; | |
328 | fill = fb->buffer; | |
ec16dae5 | 329 | } |
ec16dae5 JVJ |
330 | } |
331 | } else { | |
332 | framelen -= 4; | |
333 | iso_buf += 4; | |
334 | } | |
335 | ||
336 | /* Our buffer is full !!! */ | |
337 | if (framelen + fb->v4lbuf.bytesused > dev->frame_size) { | |
338 | (void) (printk_ratelimit() && | |
339 | STK_ERROR("Frame buffer overflow, lost sync\n")); | |
340 | /*FIXME Do something here? */ | |
341 | continue; | |
342 | } | |
343 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
344 | memcpy(fill, iso_buf, framelen); | |
345 | spin_lock_irqsave(&dev->spinlock, flags); | |
346 | fill += framelen; | |
347 | ||
348 | /* New size of our buffer */ | |
349 | fb->v4lbuf.bytesused += framelen; | |
350 | } | |
351 | ||
352 | resubmit: | |
353 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
354 | urb->dev = dev->udev; | |
355 | ret = usb_submit_urb(urb, GFP_ATOMIC); | |
356 | if (ret != 0) { | |
357 | STK_ERROR("Error (%d) re-submitting urb in stk_isoc_handler.\n", | |
358 | ret); | |
359 | } | |
360 | } | |
361 | ||
362 | /* -------------------------------------------- */ | |
363 | ||
364 | static int stk_prepare_iso(struct stk_camera *dev) | |
365 | { | |
366 | void *kbuf; | |
367 | int i, j; | |
368 | struct urb *urb; | |
369 | struct usb_device *udev; | |
370 | ||
371 | if (dev == NULL) | |
372 | return -ENXIO; | |
373 | udev = dev->udev; | |
374 | ||
375 | if (dev->isobufs) | |
376 | STK_ERROR("isobufs already allocated. Bad\n"); | |
377 | else | |
378 | dev->isobufs = kzalloc(MAX_ISO_BUFS * sizeof(*dev->isobufs), | |
379 | GFP_KERNEL); | |
380 | if (dev->isobufs == NULL) { | |
381 | STK_ERROR("Unable to allocate iso buffers\n"); | |
382 | return -ENOMEM; | |
383 | } | |
384 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
385 | if (dev->isobufs[i].data == NULL) { | |
386 | kbuf = kzalloc(ISO_BUFFER_SIZE, GFP_KERNEL); | |
387 | if (kbuf == NULL) { | |
388 | STK_ERROR("Failed to allocate iso buffer %d\n", | |
389 | i); | |
390 | goto isobufs_out; | |
391 | } | |
392 | dev->isobufs[i].data = kbuf; | |
393 | } else | |
394 | STK_ERROR("isobuf data already allocated\n"); | |
395 | if (dev->isobufs[i].urb == NULL) { | |
396 | urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); | |
397 | if (urb == NULL) { | |
398 | STK_ERROR("Failed to allocate URB %d\n", i); | |
399 | goto isobufs_out; | |
400 | } | |
401 | dev->isobufs[i].urb = urb; | |
402 | } else { | |
403 | STK_ERROR("Killing URB\n"); | |
404 | usb_kill_urb(dev->isobufs[i].urb); | |
405 | urb = dev->isobufs[i].urb; | |
406 | } | |
407 | urb->interval = 1; | |
408 | urb->dev = udev; | |
409 | urb->pipe = usb_rcvisocpipe(udev, dev->isoc_ep); | |
410 | urb->transfer_flags = URB_ISO_ASAP; | |
411 | urb->transfer_buffer = dev->isobufs[i].data; | |
412 | urb->transfer_buffer_length = ISO_BUFFER_SIZE; | |
413 | urb->complete = stk_isoc_handler; | |
414 | urb->context = dev; | |
415 | urb->start_frame = 0; | |
416 | urb->number_of_packets = ISO_FRAMES_PER_DESC; | |
417 | ||
418 | for (j = 0; j < ISO_FRAMES_PER_DESC; j++) { | |
419 | urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE; | |
420 | urb->iso_frame_desc[j].length = ISO_MAX_FRAME_SIZE; | |
421 | } | |
422 | } | |
423 | set_memallocd(dev); | |
424 | return 0; | |
425 | ||
426 | isobufs_out: | |
427 | for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].data; i++) | |
428 | kfree(dev->isobufs[i].data); | |
429 | for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].urb; i++) | |
430 | usb_free_urb(dev->isobufs[i].urb); | |
431 | kfree(dev->isobufs); | |
432 | dev->isobufs = NULL; | |
433 | return -ENOMEM; | |
434 | } | |
435 | ||
436 | static void stk_clean_iso(struct stk_camera *dev) | |
437 | { | |
438 | int i; | |
439 | ||
440 | if (dev == NULL || dev->isobufs == NULL) | |
441 | return; | |
442 | ||
443 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
444 | struct urb *urb; | |
445 | ||
446 | urb = dev->isobufs[i].urb; | |
447 | if (urb) { | |
f051ae18 | 448 | if (atomic_read(&dev->urbs_used) && is_present(dev)) |
ec16dae5 JVJ |
449 | usb_kill_urb(urb); |
450 | usb_free_urb(urb); | |
451 | } | |
452 | kfree(dev->isobufs[i].data); | |
453 | } | |
454 | kfree(dev->isobufs); | |
455 | dev->isobufs = NULL; | |
456 | unset_memallocd(dev); | |
457 | } | |
458 | ||
459 | static int stk_setup_siobuf(struct stk_camera *dev, int index) | |
460 | { | |
461 | struct stk_sio_buffer *buf = dev->sio_bufs + index; | |
462 | INIT_LIST_HEAD(&buf->list); | |
463 | buf->v4lbuf.length = PAGE_ALIGN(dev->frame_size); | |
464 | buf->buffer = vmalloc_user(buf->v4lbuf.length); | |
465 | if (buf->buffer == NULL) | |
466 | return -ENOMEM; | |
467 | buf->mapcount = 0; | |
468 | buf->dev = dev; | |
469 | buf->v4lbuf.index = index; | |
470 | buf->v4lbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
471 | buf->v4lbuf.field = V4L2_FIELD_NONE; | |
472 | buf->v4lbuf.memory = V4L2_MEMORY_MMAP; | |
473 | buf->v4lbuf.m.offset = 2*index*buf->v4lbuf.length; | |
474 | return 0; | |
475 | } | |
476 | ||
477 | static int stk_free_sio_buffers(struct stk_camera *dev) | |
478 | { | |
479 | int i; | |
480 | int nbufs; | |
481 | unsigned long flags; | |
482 | if (dev->n_sbufs == 0 || dev->sio_bufs == NULL) | |
483 | return 0; | |
484 | /* | |
485 | * If any buffers are mapped, we cannot free them at all. | |
486 | */ | |
487 | for (i = 0; i < dev->n_sbufs; i++) { | |
488 | if (dev->sio_bufs[i].mapcount > 0) | |
489 | return -EBUSY; | |
490 | } | |
491 | /* | |
492 | * OK, let's do it. | |
493 | */ | |
494 | spin_lock_irqsave(&dev->spinlock, flags); | |
495 | INIT_LIST_HEAD(&dev->sio_avail); | |
496 | INIT_LIST_HEAD(&dev->sio_full); | |
497 | nbufs = dev->n_sbufs; | |
498 | dev->n_sbufs = 0; | |
499 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
500 | for (i = 0; i < nbufs; i++) { | |
501 | if (dev->sio_bufs[i].buffer != NULL) | |
502 | vfree(dev->sio_bufs[i].buffer); | |
503 | } | |
504 | kfree(dev->sio_bufs); | |
505 | dev->sio_bufs = NULL; | |
506 | return 0; | |
507 | } | |
508 | ||
509 | static int stk_prepare_sio_buffers(struct stk_camera *dev, unsigned n_sbufs) | |
510 | { | |
511 | int i; | |
512 | if (dev->sio_bufs != NULL) | |
513 | STK_ERROR("sio_bufs already allocated\n"); | |
514 | else { | |
515 | dev->sio_bufs = kzalloc(n_sbufs * sizeof(struct stk_sio_buffer), | |
516 | GFP_KERNEL); | |
517 | if (dev->sio_bufs == NULL) | |
518 | return -ENOMEM; | |
519 | for (i = 0; i < n_sbufs; i++) { | |
520 | if (stk_setup_siobuf(dev, i)) | |
521 | return (dev->n_sbufs > 1)? 0 : -ENOMEM; | |
522 | dev->n_sbufs = i+1; | |
523 | } | |
524 | } | |
525 | return 0; | |
526 | } | |
527 | ||
528 | static int stk_allocate_buffers(struct stk_camera *dev, unsigned n_sbufs) | |
529 | { | |
530 | int err; | |
531 | err = stk_prepare_iso(dev); | |
532 | if (err) { | |
533 | stk_clean_iso(dev); | |
534 | return err; | |
535 | } | |
536 | err = stk_prepare_sio_buffers(dev, n_sbufs); | |
537 | if (err) { | |
538 | stk_free_sio_buffers(dev); | |
539 | return err; | |
540 | } | |
541 | return 0; | |
542 | } | |
543 | ||
544 | static void stk_free_buffers(struct stk_camera *dev) | |
545 | { | |
546 | stk_clean_iso(dev); | |
547 | stk_free_sio_buffers(dev); | |
548 | } | |
549 | /* -------------------------------------------- */ | |
550 | ||
551 | /* v4l file operations */ | |
552 | ||
bec43661 | 553 | static int v4l_stk_open(struct file *fp) |
ec16dae5 JVJ |
554 | { |
555 | struct stk_camera *dev; | |
556 | struct video_device *vdev; | |
557 | ||
558 | vdev = video_devdata(fp); | |
559 | dev = vdev_to_camera(vdev); | |
560 | ||
d56dc612 | 561 | if (dev == NULL || !is_present(dev)) { |
ec16dae5 | 562 | return -ENXIO; |
d56dc612 | 563 | } |
4aaec3ea | 564 | fp->private_data = dev; |
1fdd61c0 | 565 | usb_autopm_get_interface(dev->interface); |
ec16dae5 JVJ |
566 | |
567 | return 0; | |
568 | } | |
569 | ||
bec43661 | 570 | static int v4l_stk_release(struct file *fp) |
ec16dae5 | 571 | { |
4aaec3ea | 572 | struct stk_camera *dev = fp->private_data; |
ec16dae5 | 573 | |
f051ae18 DE |
574 | if (dev->owner == fp) { |
575 | stk_stop_stream(dev); | |
576 | stk_free_buffers(dev); | |
577 | dev->owner = NULL; | |
ec16dae5 JVJ |
578 | } |
579 | ||
f051ae18 DE |
580 | if(is_present(dev)) |
581 | usb_autopm_put_interface(dev->interface); | |
ec16dae5 JVJ |
582 | |
583 | return 0; | |
584 | } | |
585 | ||
586 | static ssize_t v4l_stk_read(struct file *fp, char __user *buf, | |
587 | size_t count, loff_t *f_pos) | |
588 | { | |
589 | int i; | |
590 | int ret; | |
591 | unsigned long flags; | |
ec16dae5 | 592 | struct stk_sio_buffer *sbuf; |
4aaec3ea | 593 | struct stk_camera *dev = fp->private_data; |
ec16dae5 | 594 | |
ec16dae5 JVJ |
595 | if (!is_present(dev)) |
596 | return -EIO; | |
597 | if (dev->owner && dev->owner != fp) | |
598 | return -EBUSY; | |
599 | dev->owner = fp; | |
600 | if (!is_streaming(dev)) { | |
601 | if (stk_initialise(dev) | |
602 | || stk_allocate_buffers(dev, 3) | |
603 | || stk_start_stream(dev)) | |
604 | return -ENOMEM; | |
605 | spin_lock_irqsave(&dev->spinlock, flags); | |
606 | for (i = 0; i < dev->n_sbufs; i++) { | |
607 | list_add_tail(&dev->sio_bufs[i].list, &dev->sio_avail); | |
608 | dev->sio_bufs[i].v4lbuf.flags = V4L2_BUF_FLAG_QUEUED; | |
609 | } | |
610 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
611 | } | |
612 | if (*f_pos == 0) { | |
613 | if (fp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full)) | |
614 | return -EWOULDBLOCK; | |
615 | ret = wait_event_interruptible(dev->wait_frame, | |
616 | !list_empty(&dev->sio_full) || !is_present(dev)); | |
617 | if (ret) | |
618 | return ret; | |
619 | if (!is_present(dev)) | |
620 | return -EIO; | |
621 | } | |
622 | if (count + *f_pos > dev->frame_size) | |
623 | count = dev->frame_size - *f_pos; | |
624 | spin_lock_irqsave(&dev->spinlock, flags); | |
625 | if (list_empty(&dev->sio_full)) { | |
626 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
627 | STK_ERROR("BUG: No siobufs ready\n"); | |
628 | return 0; | |
629 | } | |
630 | sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list); | |
631 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
632 | ||
633 | if (copy_to_user(buf, sbuf->buffer + *f_pos, count)) | |
634 | return -EFAULT; | |
635 | ||
636 | *f_pos += count; | |
637 | ||
638 | if (*f_pos >= dev->frame_size) { | |
639 | *f_pos = 0; | |
640 | spin_lock_irqsave(&dev->spinlock, flags); | |
641 | list_move_tail(&sbuf->list, &dev->sio_avail); | |
642 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
643 | } | |
644 | return count; | |
645 | } | |
646 | ||
647 | static unsigned int v4l_stk_poll(struct file *fp, poll_table *wait) | |
648 | { | |
4aaec3ea | 649 | struct stk_camera *dev = fp->private_data; |
ec16dae5 | 650 | |
ec16dae5 JVJ |
651 | poll_wait(fp, &dev->wait_frame, wait); |
652 | ||
653 | if (!is_present(dev)) | |
654 | return POLLERR; | |
655 | ||
656 | if (!list_empty(&dev->sio_full)) | |
657 | return (POLLIN | POLLRDNORM); | |
658 | ||
659 | return 0; | |
660 | } | |
661 | ||
662 | ||
663 | static void stk_v4l_vm_open(struct vm_area_struct *vma) | |
664 | { | |
665 | struct stk_sio_buffer *sbuf = vma->vm_private_data; | |
666 | sbuf->mapcount++; | |
667 | } | |
668 | static void stk_v4l_vm_close(struct vm_area_struct *vma) | |
669 | { | |
670 | struct stk_sio_buffer *sbuf = vma->vm_private_data; | |
671 | sbuf->mapcount--; | |
672 | if (sbuf->mapcount == 0) | |
673 | sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_MAPPED; | |
674 | } | |
f0f37e2f | 675 | static const struct vm_operations_struct stk_v4l_vm_ops = { |
ec16dae5 JVJ |
676 | .open = stk_v4l_vm_open, |
677 | .close = stk_v4l_vm_close | |
678 | }; | |
679 | ||
680 | static int v4l_stk_mmap(struct file *fp, struct vm_area_struct *vma) | |
681 | { | |
682 | unsigned int i; | |
683 | int ret; | |
684 | unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; | |
4aaec3ea | 685 | struct stk_camera *dev = fp->private_data; |
ec16dae5 JVJ |
686 | struct stk_sio_buffer *sbuf = NULL; |
687 | ||
688 | if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED)) | |
689 | return -EINVAL; | |
690 | ||
ec16dae5 JVJ |
691 | for (i = 0; i < dev->n_sbufs; i++) { |
692 | if (dev->sio_bufs[i].v4lbuf.m.offset == offset) { | |
693 | sbuf = dev->sio_bufs + i; | |
694 | break; | |
695 | } | |
696 | } | |
697 | if (sbuf == NULL) | |
698 | return -EINVAL; | |
699 | ret = remap_vmalloc_range(vma, sbuf->buffer, 0); | |
700 | if (ret) | |
701 | return ret; | |
702 | vma->vm_flags |= VM_DONTEXPAND; | |
703 | vma->vm_private_data = sbuf; | |
704 | vma->vm_ops = &stk_v4l_vm_ops; | |
705 | sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_MAPPED; | |
706 | stk_v4l_vm_open(vma); | |
707 | return 0; | |
708 | } | |
709 | ||
710 | /* v4l ioctl handlers */ | |
711 | ||
712 | static int stk_vidioc_querycap(struct file *filp, | |
713 | void *priv, struct v4l2_capability *cap) | |
714 | { | |
715 | strcpy(cap->driver, "stk"); | |
716 | strcpy(cap->card, "stk"); | |
717 | cap->version = DRIVER_VERSION_NUM; | |
718 | ||
719 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | |
720 | | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; | |
721 | return 0; | |
722 | } | |
723 | ||
724 | static int stk_vidioc_enum_input(struct file *filp, | |
725 | void *priv, struct v4l2_input *input) | |
726 | { | |
727 | if (input->index != 0) | |
728 | return -EINVAL; | |
729 | ||
730 | strcpy(input->name, "Syntek USB Camera"); | |
731 | input->type = V4L2_INPUT_TYPE_CAMERA; | |
732 | return 0; | |
733 | } | |
734 | ||
735 | ||
736 | static int stk_vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
737 | { | |
738 | *i = 0; | |
739 | return 0; | |
740 | } | |
741 | ||
742 | static int stk_vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
743 | { | |
744 | if (i != 0) | |
745 | return -EINVAL; | |
746 | else | |
747 | return 0; | |
748 | } | |
749 | ||
750 | /* from vivi.c */ | |
751 | static int stk_vidioc_s_std(struct file *filp, void *priv, v4l2_std_id *a) | |
752 | { | |
753 | return 0; | |
754 | } | |
755 | ||
756 | /* List of all V4Lv2 controls supported by the driver */ | |
757 | static struct v4l2_queryctrl stk_controls[] = { | |
758 | { | |
759 | .id = V4L2_CID_BRIGHTNESS, | |
760 | .type = V4L2_CTRL_TYPE_INTEGER, | |
761 | .name = "Brightness", | |
762 | .minimum = 0, | |
763 | .maximum = 0xffff, | |
764 | .step = 0x0100, | |
765 | .default_value = 0x6000, | |
766 | }, | |
0a58d713 HV |
767 | { |
768 | .id = V4L2_CID_HFLIP, | |
769 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
770 | .name = "Horizontal Flip", | |
771 | .minimum = 0, | |
772 | .maximum = 1, | |
773 | .step = 1, | |
774 | .default_value = 1, | |
775 | }, | |
776 | { | |
777 | .id = V4L2_CID_VFLIP, | |
778 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
779 | .name = "Vertical Flip", | |
780 | .minimum = 0, | |
781 | .maximum = 1, | |
782 | .step = 1, | |
783 | .default_value = 1, | |
784 | }, | |
ec16dae5 JVJ |
785 | }; |
786 | ||
787 | static int stk_vidioc_queryctrl(struct file *filp, | |
788 | void *priv, struct v4l2_queryctrl *c) | |
789 | { | |
790 | int i; | |
791 | int nbr; | |
792 | nbr = ARRAY_SIZE(stk_controls); | |
793 | ||
794 | for (i = 0; i < nbr; i++) { | |
795 | if (stk_controls[i].id == c->id) { | |
796 | memcpy(c, &stk_controls[i], | |
797 | sizeof(struct v4l2_queryctrl)); | |
798 | return 0; | |
799 | } | |
800 | } | |
801 | return -EINVAL; | |
802 | } | |
803 | ||
804 | static int stk_vidioc_g_ctrl(struct file *filp, | |
805 | void *priv, struct v4l2_control *c) | |
806 | { | |
807 | struct stk_camera *dev = priv; | |
808 | switch (c->id) { | |
809 | case V4L2_CID_BRIGHTNESS: | |
810 | c->value = dev->vsettings.brightness; | |
811 | break; | |
0a58d713 HV |
812 | case V4L2_CID_HFLIP: |
813 | c->value = dev->vsettings.hflip; | |
814 | break; | |
815 | case V4L2_CID_VFLIP: | |
816 | c->value = dev->vsettings.vflip; | |
817 | break; | |
ec16dae5 JVJ |
818 | default: |
819 | return -EINVAL; | |
820 | } | |
821 | return 0; | |
822 | } | |
823 | ||
824 | static int stk_vidioc_s_ctrl(struct file *filp, | |
825 | void *priv, struct v4l2_control *c) | |
826 | { | |
827 | struct stk_camera *dev = priv; | |
828 | switch (c->id) { | |
829 | case V4L2_CID_BRIGHTNESS: | |
830 | dev->vsettings.brightness = c->value; | |
831 | return stk_sensor_set_brightness(dev, c->value >> 8); | |
0a58d713 HV |
832 | case V4L2_CID_HFLIP: |
833 | dev->vsettings.hflip = c->value; | |
834 | return 0; | |
835 | case V4L2_CID_VFLIP: | |
836 | dev->vsettings.vflip = c->value; | |
837 | return 0; | |
ec16dae5 JVJ |
838 | default: |
839 | return -EINVAL; | |
840 | } | |
841 | return 0; | |
842 | } | |
843 | ||
844 | ||
78b526a4 | 845 | static int stk_vidioc_enum_fmt_vid_cap(struct file *filp, |
ec16dae5 JVJ |
846 | void *priv, struct v4l2_fmtdesc *fmtd) |
847 | { | |
ec16dae5 JVJ |
848 | switch (fmtd->index) { |
849 | case 0: | |
850 | fmtd->pixelformat = V4L2_PIX_FMT_RGB565; | |
851 | strcpy(fmtd->description, "r5g6b5"); | |
852 | break; | |
853 | case 1: | |
854 | fmtd->pixelformat = V4L2_PIX_FMT_RGB565X; | |
855 | strcpy(fmtd->description, "r5g6b5BE"); | |
856 | break; | |
857 | case 2: | |
858 | fmtd->pixelformat = V4L2_PIX_FMT_UYVY; | |
859 | strcpy(fmtd->description, "yuv4:2:2"); | |
860 | break; | |
861 | case 3: | |
862 | fmtd->pixelformat = V4L2_PIX_FMT_SBGGR8; | |
863 | strcpy(fmtd->description, "Raw bayer"); | |
864 | break; | |
1112fb68 JVJ |
865 | case 4: |
866 | fmtd->pixelformat = V4L2_PIX_FMT_YUYV; | |
867 | strcpy(fmtd->description, "yuv4:2:2"); | |
868 | break; | |
ec16dae5 JVJ |
869 | default: |
870 | return -EINVAL; | |
871 | } | |
872 | return 0; | |
873 | } | |
874 | ||
875 | static struct stk_size { | |
876 | unsigned w; | |
877 | unsigned h; | |
878 | enum stk_mode m; | |
879 | } stk_sizes[] = { | |
880 | { .w = 1280, .h = 1024, .m = MODE_SXGA, }, | |
881 | { .w = 640, .h = 480, .m = MODE_VGA, }, | |
882 | { .w = 352, .h = 288, .m = MODE_CIF, }, | |
883 | { .w = 320, .h = 240, .m = MODE_QVGA, }, | |
884 | { .w = 176, .h = 144, .m = MODE_QCIF, }, | |
885 | }; | |
886 | ||
78b526a4 | 887 | static int stk_vidioc_g_fmt_vid_cap(struct file *filp, |
ec16dae5 JVJ |
888 | void *priv, struct v4l2_format *f) |
889 | { | |
890 | struct v4l2_pix_format *pix_format = &f->fmt.pix; | |
891 | struct stk_camera *dev = priv; | |
892 | int i; | |
893 | ||
894 | for (i = 0; i < ARRAY_SIZE(stk_sizes) | |
895 | && stk_sizes[i].m != dev->vsettings.mode; | |
896 | i++); | |
897 | if (i == ARRAY_SIZE(stk_sizes)) { | |
898 | STK_ERROR("ERROR: mode invalid\n"); | |
899 | return -EINVAL; | |
900 | } | |
901 | pix_format->width = stk_sizes[i].w; | |
902 | pix_format->height = stk_sizes[i].h; | |
903 | pix_format->field = V4L2_FIELD_NONE; | |
904 | pix_format->colorspace = V4L2_COLORSPACE_SRGB; | |
ec16dae5 JVJ |
905 | pix_format->pixelformat = dev->vsettings.palette; |
906 | if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8) | |
907 | pix_format->bytesperline = pix_format->width; | |
908 | else | |
909 | pix_format->bytesperline = 2 * pix_format->width; | |
910 | pix_format->sizeimage = pix_format->bytesperline | |
911 | * pix_format->height; | |
912 | return 0; | |
913 | } | |
914 | ||
78b526a4 | 915 | static int stk_vidioc_try_fmt_vid_cap(struct file *filp, |
ec16dae5 JVJ |
916 | void *priv, struct v4l2_format *fmtd) |
917 | { | |
918 | int i; | |
919 | switch (fmtd->fmt.pix.pixelformat) { | |
920 | case V4L2_PIX_FMT_RGB565: | |
921 | case V4L2_PIX_FMT_RGB565X: | |
922 | case V4L2_PIX_FMT_UYVY: | |
1112fb68 | 923 | case V4L2_PIX_FMT_YUYV: |
ec16dae5 JVJ |
924 | case V4L2_PIX_FMT_SBGGR8: |
925 | break; | |
926 | default: | |
927 | return -EINVAL; | |
928 | } | |
929 | for (i = 1; i < ARRAY_SIZE(stk_sizes); i++) { | |
930 | if (fmtd->fmt.pix.width > stk_sizes[i].w) | |
931 | break; | |
932 | } | |
933 | if (i == ARRAY_SIZE(stk_sizes) | |
934 | || (abs(fmtd->fmt.pix.width - stk_sizes[i-1].w) | |
935 | < abs(fmtd->fmt.pix.width - stk_sizes[i].w))) { | |
936 | fmtd->fmt.pix.height = stk_sizes[i-1].h; | |
937 | fmtd->fmt.pix.width = stk_sizes[i-1].w; | |
938 | fmtd->fmt.pix.priv = i - 1; | |
939 | } else { | |
940 | fmtd->fmt.pix.height = stk_sizes[i].h; | |
941 | fmtd->fmt.pix.width = stk_sizes[i].w; | |
942 | fmtd->fmt.pix.priv = i; | |
943 | } | |
944 | ||
945 | fmtd->fmt.pix.field = V4L2_FIELD_NONE; | |
946 | fmtd->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; | |
947 | if (fmtd->fmt.pix.pixelformat == V4L2_PIX_FMT_SBGGR8) | |
948 | fmtd->fmt.pix.bytesperline = fmtd->fmt.pix.width; | |
949 | else | |
950 | fmtd->fmt.pix.bytesperline = 2 * fmtd->fmt.pix.width; | |
951 | fmtd->fmt.pix.sizeimage = fmtd->fmt.pix.bytesperline | |
952 | * fmtd->fmt.pix.height; | |
953 | return 0; | |
954 | } | |
955 | ||
1fdd61c0 JVJ |
956 | static int stk_setup_format(struct stk_camera *dev) |
957 | { | |
958 | int i = 0; | |
959 | int depth; | |
960 | if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8) | |
961 | depth = 1; | |
962 | else | |
963 | depth = 2; | |
77f2c2db RK |
964 | while (i < ARRAY_SIZE(stk_sizes) && |
965 | stk_sizes[i].m != dev->vsettings.mode) | |
1fdd61c0 JVJ |
966 | i++; |
967 | if (i == ARRAY_SIZE(stk_sizes)) { | |
7e28adb2 | 968 | STK_ERROR("Something is broken in %s\n", __func__); |
1fdd61c0 JVJ |
969 | return -EFAULT; |
970 | } | |
971 | /* This registers controls some timings, not sure of what. */ | |
972 | stk_camera_write_reg(dev, 0x001b, 0x0e); | |
973 | if (dev->vsettings.mode == MODE_SXGA) | |
974 | stk_camera_write_reg(dev, 0x001c, 0x0e); | |
975 | else | |
976 | stk_camera_write_reg(dev, 0x001c, 0x46); | |
977 | /* | |
978 | * Registers 0x0115 0x0114 are the size of each line (bytes), | |
979 | * regs 0x0117 0x0116 are the heigth of the image. | |
980 | */ | |
981 | stk_camera_write_reg(dev, 0x0115, | |
982 | ((stk_sizes[i].w * depth) >> 8) & 0xff); | |
983 | stk_camera_write_reg(dev, 0x0114, | |
984 | (stk_sizes[i].w * depth) & 0xff); | |
985 | stk_camera_write_reg(dev, 0x0117, | |
986 | (stk_sizes[i].h >> 8) & 0xff); | |
987 | stk_camera_write_reg(dev, 0x0116, | |
988 | stk_sizes[i].h & 0xff); | |
989 | return stk_sensor_configure(dev); | |
990 | } | |
991 | ||
78b526a4 | 992 | static int stk_vidioc_s_fmt_vid_cap(struct file *filp, |
ec16dae5 JVJ |
993 | void *priv, struct v4l2_format *fmtd) |
994 | { | |
995 | int ret; | |
996 | struct stk_camera *dev = priv; | |
997 | ||
998 | if (dev == NULL) | |
999 | return -ENODEV; | |
1000 | if (!is_present(dev)) | |
1001 | return -ENODEV; | |
1002 | if (is_streaming(dev)) | |
1003 | return -EBUSY; | |
1004 | if (dev->owner && dev->owner != filp) | |
1005 | return -EBUSY; | |
78b526a4 | 1006 | ret = stk_vidioc_try_fmt_vid_cap(filp, priv, fmtd); |
ec16dae5 JVJ |
1007 | if (ret) |
1008 | return ret; | |
1fdd61c0 | 1009 | dev->owner = filp; |
ec16dae5 JVJ |
1010 | |
1011 | dev->vsettings.palette = fmtd->fmt.pix.pixelformat; | |
1012 | stk_free_buffers(dev); | |
1013 | dev->frame_size = fmtd->fmt.pix.sizeimage; | |
1014 | dev->vsettings.mode = stk_sizes[fmtd->fmt.pix.priv].m; | |
1015 | ||
1016 | stk_initialise(dev); | |
1fdd61c0 | 1017 | return stk_setup_format(dev); |
ec16dae5 JVJ |
1018 | } |
1019 | ||
1020 | static int stk_vidioc_reqbufs(struct file *filp, | |
1021 | void *priv, struct v4l2_requestbuffers *rb) | |
1022 | { | |
1023 | struct stk_camera *dev = priv; | |
1024 | ||
1025 | if (dev == NULL) | |
1026 | return -ENODEV; | |
ec16dae5 JVJ |
1027 | if (rb->memory != V4L2_MEMORY_MMAP) |
1028 | return -EINVAL; | |
1029 | if (is_streaming(dev) | |
1030 | || (dev->owner && dev->owner != filp)) | |
1031 | return -EBUSY; | |
1032 | dev->owner = filp; | |
1033 | ||
1034 | /*FIXME If they ask for zero, we must stop streaming and free */ | |
1035 | if (rb->count < 3) | |
1036 | rb->count = 3; | |
1037 | /* Arbitrary limit */ | |
1038 | else if (rb->count > 5) | |
1039 | rb->count = 5; | |
1040 | ||
1041 | stk_allocate_buffers(dev, rb->count); | |
1042 | rb->count = dev->n_sbufs; | |
1043 | return 0; | |
1044 | } | |
1045 | ||
1046 | static int stk_vidioc_querybuf(struct file *filp, | |
1047 | void *priv, struct v4l2_buffer *buf) | |
1048 | { | |
ec16dae5 JVJ |
1049 | struct stk_camera *dev = priv; |
1050 | struct stk_sio_buffer *sbuf; | |
1051 | ||
223ffe5f | 1052 | if (buf->index >= dev->n_sbufs) |
ec16dae5 JVJ |
1053 | return -EINVAL; |
1054 | sbuf = dev->sio_bufs + buf->index; | |
1055 | *buf = sbuf->v4lbuf; | |
1056 | return 0; | |
1057 | } | |
1058 | ||
1059 | static int stk_vidioc_qbuf(struct file *filp, | |
1060 | void *priv, struct v4l2_buffer *buf) | |
1061 | { | |
1062 | struct stk_camera *dev = priv; | |
1063 | struct stk_sio_buffer *sbuf; | |
1064 | unsigned long flags; | |
ec16dae5 JVJ |
1065 | |
1066 | if (buf->memory != V4L2_MEMORY_MMAP) | |
1067 | return -EINVAL; | |
1068 | ||
223ffe5f | 1069 | if (buf->index >= dev->n_sbufs) |
ec16dae5 JVJ |
1070 | return -EINVAL; |
1071 | sbuf = dev->sio_bufs + buf->index; | |
1072 | if (sbuf->v4lbuf.flags & V4L2_BUF_FLAG_QUEUED) | |
1073 | return 0; | |
1074 | sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_QUEUED; | |
1075 | sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_DONE; | |
1076 | spin_lock_irqsave(&dev->spinlock, flags); | |
1077 | list_add_tail(&sbuf->list, &dev->sio_avail); | |
1078 | *buf = sbuf->v4lbuf; | |
1079 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1080 | return 0; | |
1081 | } | |
1082 | ||
1083 | static int stk_vidioc_dqbuf(struct file *filp, | |
1084 | void *priv, struct v4l2_buffer *buf) | |
1085 | { | |
1086 | struct stk_camera *dev = priv; | |
1087 | struct stk_sio_buffer *sbuf; | |
1088 | unsigned long flags; | |
1089 | int ret; | |
1090 | ||
2509e1cb | 1091 | if (!is_streaming(dev)) |
ec16dae5 JVJ |
1092 | return -EINVAL; |
1093 | ||
1094 | if (filp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full)) | |
1095 | return -EWOULDBLOCK; | |
1096 | ret = wait_event_interruptible(dev->wait_frame, | |
1097 | !list_empty(&dev->sio_full) || !is_present(dev)); | |
1098 | if (ret) | |
1099 | return ret; | |
1100 | if (!is_present(dev)) | |
1101 | return -EIO; | |
1102 | ||
1103 | spin_lock_irqsave(&dev->spinlock, flags); | |
1104 | sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list); | |
1105 | list_del_init(&sbuf->list); | |
1106 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1107 | sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_QUEUED; | |
1108 | sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_DONE; | |
1109 | sbuf->v4lbuf.sequence = ++dev->sequence; | |
1110 | do_gettimeofday(&sbuf->v4lbuf.timestamp); | |
1111 | ||
1112 | *buf = sbuf->v4lbuf; | |
1113 | return 0; | |
1114 | } | |
1115 | ||
1116 | static int stk_vidioc_streamon(struct file *filp, | |
1117 | void *priv, enum v4l2_buf_type type) | |
1118 | { | |
1119 | struct stk_camera *dev = priv; | |
1120 | if (is_streaming(dev)) | |
1121 | return 0; | |
1122 | if (dev->sio_bufs == NULL) | |
1123 | return -EINVAL; | |
1124 | dev->sequence = 0; | |
1125 | return stk_start_stream(dev); | |
1126 | } | |
1127 | ||
1128 | static int stk_vidioc_streamoff(struct file *filp, | |
1129 | void *priv, enum v4l2_buf_type type) | |
1130 | { | |
1131 | struct stk_camera *dev = priv; | |
1132 | unsigned long flags; | |
1133 | int i; | |
1134 | stk_stop_stream(dev); | |
1135 | spin_lock_irqsave(&dev->spinlock, flags); | |
1136 | INIT_LIST_HEAD(&dev->sio_avail); | |
1137 | INIT_LIST_HEAD(&dev->sio_full); | |
1138 | for (i = 0; i < dev->n_sbufs; i++) { | |
1139 | INIT_LIST_HEAD(&dev->sio_bufs[i].list); | |
1140 | dev->sio_bufs[i].v4lbuf.flags = 0; | |
1141 | } | |
1142 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1143 | return 0; | |
1144 | } | |
1145 | ||
1146 | ||
1147 | static int stk_vidioc_g_parm(struct file *filp, | |
1148 | void *priv, struct v4l2_streamparm *sp) | |
1149 | { | |
ec16dae5 JVJ |
1150 | /*FIXME This is not correct */ |
1151 | sp->parm.capture.timeperframe.numerator = 1; | |
1152 | sp->parm.capture.timeperframe.denominator = 30; | |
1153 | sp->parm.capture.readbuffers = 2; | |
ec16dae5 JVJ |
1154 | return 0; |
1155 | } | |
1156 | ||
126be90f JVJ |
1157 | static int stk_vidioc_enum_framesizes(struct file *filp, |
1158 | void *priv, struct v4l2_frmsizeenum *frms) | |
1159 | { | |
1160 | if (frms->index >= ARRAY_SIZE(stk_sizes)) | |
1161 | return -EINVAL; | |
1162 | switch (frms->pixel_format) { | |
1163 | case V4L2_PIX_FMT_RGB565: | |
1164 | case V4L2_PIX_FMT_RGB565X: | |
1165 | case V4L2_PIX_FMT_UYVY: | |
1166 | case V4L2_PIX_FMT_YUYV: | |
1167 | case V4L2_PIX_FMT_SBGGR8: | |
1168 | frms->type = V4L2_FRMSIZE_TYPE_DISCRETE; | |
1169 | frms->discrete.width = stk_sizes[frms->index].w; | |
1170 | frms->discrete.height = stk_sizes[frms->index].h; | |
1171 | return 0; | |
1172 | default: return -EINVAL; | |
1173 | } | |
1174 | } | |
1175 | ||
bec43661 | 1176 | static struct v4l2_file_operations v4l_stk_fops = { |
ec16dae5 JVJ |
1177 | .owner = THIS_MODULE, |
1178 | .open = v4l_stk_open, | |
1179 | .release = v4l_stk_release, | |
1180 | .read = v4l_stk_read, | |
1181 | .poll = v4l_stk_poll, | |
1182 | .mmap = v4l_stk_mmap, | |
1183 | .ioctl = video_ioctl2, | |
ec16dae5 JVJ |
1184 | }; |
1185 | ||
a399810c | 1186 | static const struct v4l2_ioctl_ops v4l_stk_ioctl_ops = { |
ec16dae5 | 1187 | .vidioc_querycap = stk_vidioc_querycap, |
78b526a4 HV |
1188 | .vidioc_enum_fmt_vid_cap = stk_vidioc_enum_fmt_vid_cap, |
1189 | .vidioc_try_fmt_vid_cap = stk_vidioc_try_fmt_vid_cap, | |
1190 | .vidioc_s_fmt_vid_cap = stk_vidioc_s_fmt_vid_cap, | |
1191 | .vidioc_g_fmt_vid_cap = stk_vidioc_g_fmt_vid_cap, | |
ec16dae5 JVJ |
1192 | .vidioc_enum_input = stk_vidioc_enum_input, |
1193 | .vidioc_s_input = stk_vidioc_s_input, | |
1194 | .vidioc_g_input = stk_vidioc_g_input, | |
1195 | .vidioc_s_std = stk_vidioc_s_std, | |
1196 | .vidioc_reqbufs = stk_vidioc_reqbufs, | |
1197 | .vidioc_querybuf = stk_vidioc_querybuf, | |
1198 | .vidioc_qbuf = stk_vidioc_qbuf, | |
1199 | .vidioc_dqbuf = stk_vidioc_dqbuf, | |
1200 | .vidioc_streamon = stk_vidioc_streamon, | |
1201 | .vidioc_streamoff = stk_vidioc_streamoff, | |
1202 | .vidioc_queryctrl = stk_vidioc_queryctrl, | |
1203 | .vidioc_g_ctrl = stk_vidioc_g_ctrl, | |
1204 | .vidioc_s_ctrl = stk_vidioc_s_ctrl, | |
1205 | .vidioc_g_parm = stk_vidioc_g_parm, | |
126be90f | 1206 | .vidioc_enum_framesizes = stk_vidioc_enum_framesizes, |
ec16dae5 JVJ |
1207 | }; |
1208 | ||
a399810c HV |
1209 | static void stk_v4l_dev_release(struct video_device *vd) |
1210 | { | |
4aaec3ea DE |
1211 | struct stk_camera *dev = vdev_to_camera(vd); |
1212 | ||
1213 | if (dev->sio_bufs != NULL || dev->isobufs != NULL) | |
1214 | STK_ERROR("We are leaking memory\n"); | |
1215 | usb_put_intf(dev->interface); | |
1216 | kfree(dev); | |
a399810c HV |
1217 | } |
1218 | ||
1219 | static struct video_device stk_v4l_data = { | |
1220 | .name = "stkwebcam", | |
a399810c HV |
1221 | .tvnorms = V4L2_STD_UNKNOWN, |
1222 | .current_norm = V4L2_STD_UNKNOWN, | |
1223 | .fops = &v4l_stk_fops, | |
1224 | .ioctl_ops = &v4l_stk_ioctl_ops, | |
1225 | .release = stk_v4l_dev_release, | |
1226 | }; | |
1227 | ||
ec16dae5 JVJ |
1228 | |
1229 | static int stk_register_video_device(struct stk_camera *dev) | |
1230 | { | |
1231 | int err; | |
1232 | ||
1233 | dev->vdev = stk_v4l_data; | |
1234 | dev->vdev.debug = debug; | |
5e85e732 | 1235 | dev->vdev.parent = &dev->interface->dev; |
ec16dae5 JVJ |
1236 | err = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1); |
1237 | if (err) | |
1238 | STK_ERROR("v4l registration failed\n"); | |
1239 | else | |
38c7c036 LP |
1240 | STK_INFO("Syntek USB2.0 Camera is now controlling device %s\n", |
1241 | video_device_node_name(&dev->vdev)); | |
ec16dae5 JVJ |
1242 | return err; |
1243 | } | |
1244 | ||
1245 | ||
1246 | /* USB Stuff */ | |
1247 | ||
1248 | static int stk_camera_probe(struct usb_interface *interface, | |
1249 | const struct usb_device_id *id) | |
1250 | { | |
1251 | int i; | |
4aaec3ea | 1252 | int err = 0; |
ec16dae5 JVJ |
1253 | |
1254 | struct stk_camera *dev = NULL; | |
1255 | struct usb_device *udev = interface_to_usbdev(interface); | |
1256 | struct usb_host_interface *iface_desc; | |
1257 | struct usb_endpoint_descriptor *endpoint; | |
1258 | ||
1259 | dev = kzalloc(sizeof(struct stk_camera), GFP_KERNEL); | |
1260 | if (dev == NULL) { | |
1261 | STK_ERROR("Out of memory !\n"); | |
1262 | return -ENOMEM; | |
1263 | } | |
1264 | ||
ec16dae5 JVJ |
1265 | spin_lock_init(&dev->spinlock); |
1266 | init_waitqueue_head(&dev->wait_frame); | |
1267 | ||
1268 | dev->udev = udev; | |
1269 | dev->interface = interface; | |
1270 | usb_get_intf(interface); | |
1271 | ||
1272 | dev->vsettings.vflip = vflip; | |
1273 | dev->vsettings.hflip = hflip; | |
1274 | dev->n_sbufs = 0; | |
1275 | set_present(dev); | |
1276 | ||
1277 | /* Set up the endpoint information | |
1278 | * use only the first isoc-in endpoint | |
1279 | * for the current alternate setting */ | |
1280 | iface_desc = interface->cur_altsetting; | |
1281 | ||
1282 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
1283 | endpoint = &iface_desc->endpoint[i].desc; | |
1284 | ||
1285 | if (!dev->isoc_ep | |
13417982 | 1286 | && usb_endpoint_is_isoc_in(endpoint)) { |
ec16dae5 | 1287 | /* we found an isoc in endpoint */ |
13417982 | 1288 | dev->isoc_ep = usb_endpoint_num(endpoint); |
ec16dae5 JVJ |
1289 | break; |
1290 | } | |
1291 | } | |
1292 | if (!dev->isoc_ep) { | |
1293 | STK_ERROR("Could not find isoc-in endpoint"); | |
4aaec3ea DE |
1294 | err = -ENODEV; |
1295 | goto error; | |
ec16dae5 JVJ |
1296 | } |
1297 | dev->vsettings.brightness = 0x7fff; | |
1298 | dev->vsettings.palette = V4L2_PIX_FMT_RGB565; | |
1299 | dev->vsettings.mode = MODE_VGA; | |
1112fb68 | 1300 | dev->frame_size = 640 * 480 * 2; |
ec16dae5 JVJ |
1301 | |
1302 | INIT_LIST_HEAD(&dev->sio_avail); | |
1303 | INIT_LIST_HEAD(&dev->sio_full); | |
1304 | ||
1305 | usb_set_intfdata(interface, dev); | |
1306 | ||
1307 | err = stk_register_video_device(dev); | |
1308 | if (err) { | |
4aaec3ea | 1309 | goto error; |
ec16dae5 JVJ |
1310 | } |
1311 | ||
ec16dae5 | 1312 | return 0; |
4aaec3ea DE |
1313 | |
1314 | error: | |
1315 | kfree(dev); | |
1316 | return err; | |
ec16dae5 JVJ |
1317 | } |
1318 | ||
1319 | static void stk_camera_disconnect(struct usb_interface *interface) | |
1320 | { | |
1321 | struct stk_camera *dev = usb_get_intfdata(interface); | |
1322 | ||
1323 | usb_set_intfdata(interface, NULL); | |
1324 | unset_present(dev); | |
1325 | ||
1326 | wake_up_interruptible(&dev->wait_frame); | |
ec16dae5 | 1327 | |
38c7c036 LP |
1328 | STK_INFO("Syntek USB2.0 Camera release resources device %s\n", |
1329 | video_device_node_name(&dev->vdev)); | |
4aaec3ea DE |
1330 | |
1331 | video_unregister_device(&dev->vdev); | |
ec16dae5 JVJ |
1332 | } |
1333 | ||
1fdd61c0 | 1334 | #ifdef CONFIG_PM |
4d34dccd | 1335 | static int stk_camera_suspend(struct usb_interface *intf, pm_message_t message) |
1fdd61c0 JVJ |
1336 | { |
1337 | struct stk_camera *dev = usb_get_intfdata(intf); | |
1338 | if (is_streaming(dev)) { | |
1339 | stk_stop_stream(dev); | |
1340 | /* yes, this is ugly */ | |
1341 | set_streaming(dev); | |
1342 | } | |
1343 | return 0; | |
1344 | } | |
1345 | ||
4d34dccd | 1346 | static int stk_camera_resume(struct usb_interface *intf) |
1fdd61c0 JVJ |
1347 | { |
1348 | struct stk_camera *dev = usb_get_intfdata(intf); | |
1349 | if (!is_initialised(dev)) | |
1350 | return 0; | |
1351 | unset_initialised(dev); | |
1352 | stk_initialise(dev); | |
1353 | stk_setup_format(dev); | |
1354 | if (is_streaming(dev)) | |
1355 | stk_start_stream(dev); | |
1356 | return 0; | |
1357 | } | |
1358 | #endif | |
1359 | ||
ec16dae5 JVJ |
1360 | static struct usb_driver stk_camera_driver = { |
1361 | .name = "stkwebcam", | |
1362 | .probe = stk_camera_probe, | |
1363 | .disconnect = stk_camera_disconnect, | |
1364 | .id_table = stkwebcam_table, | |
1fdd61c0 JVJ |
1365 | #ifdef CONFIG_PM |
1366 | .suspend = stk_camera_suspend, | |
1367 | .resume = stk_camera_resume, | |
1368 | #endif | |
ec16dae5 JVJ |
1369 | }; |
1370 | ||
1371 | ||
1372 | static int __init stk_camera_init(void) | |
1373 | { | |
1374 | int result; | |
1375 | ||
1376 | result = usb_register(&stk_camera_driver); | |
1377 | if (result) | |
1378 | STK_ERROR("usb_register failed ! Error number %d\n", result); | |
1379 | ||
1380 | ||
1381 | return result; | |
1382 | } | |
1383 | ||
1384 | static void __exit stk_camera_exit(void) | |
1385 | { | |
1386 | usb_deregister(&stk_camera_driver); | |
1387 | } | |
1388 | ||
1389 | module_init(stk_camera_init); | |
1390 | module_exit(stk_camera_exit); | |
1391 | ||
1392 |