diff options
author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
---|---|---|
committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /drivers/media/video/stk-webcam.c | |
parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) |
Diffstat (limited to 'drivers/media/video/stk-webcam.c')
-rw-r--r-- | drivers/media/video/stk-webcam.c | 1392 |
1 files changed, 1392 insertions, 0 deletions
diff --git a/drivers/media/video/stk-webcam.c b/drivers/media/video/stk-webcam.c new file mode 100644 index 00000000000..d1a2cefbf55 --- /dev/null +++ b/drivers/media/video/stk-webcam.c | |||
@@ -0,0 +1,1392 @@ | |||
1 | /* | ||
2 | * stk-webcam.c : Driver for Syntek 1125 USB webcam controller | ||
3 | * | ||
4 | * Copyright (C) 2006 Nicolas VIVIEN | ||
5 | * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com> | ||
6 | * | ||
7 | * Some parts are inspired from cafe_ccic.c | ||
8 | * Copyright 2006-2007 Jonathan Corbet | ||
9 | * | ||
10 | * This program is free software; you can redistribute it and/or modify | ||
11 | * it under the terms of the GNU General Public License as published by | ||
12 | * the Free Software Foundation; either version 2 of the License, or | ||
13 | * any later version. | ||
14 | * | ||
15 | * This program is distributed in the hope that it will be useful, | ||
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
18 | * GNU General Public License for more details. | ||
19 | * | ||
20 | * You should have received a copy of the GNU General Public License | ||
21 | * along with this program; if not, write to the Free Software | ||
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
23 | */ | ||
24 | |||
25 | #include <linux/module.h> | ||
26 | #include <linux/init.h> | ||
27 | #include <linux/kernel.h> | ||
28 | #include <linux/errno.h> | ||
29 | #include <linux/slab.h> | ||
30 | |||
31 | #include <linux/usb.h> | ||
32 | #include <linux/mm.h> | ||
33 | #include <linux/vmalloc.h> | ||
34 | #include <linux/videodev2.h> | ||
35 | #include <media/v4l2-common.h> | ||
36 | #include <media/v4l2-ioctl.h> | ||
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 | |||
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 | |||
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) { | ||
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; | ||
329 | } | ||
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) { | ||
448 | if (atomic_read(&dev->urbs_used) && is_present(dev)) | ||
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 | |||
553 | static int v4l_stk_open(struct file *fp) | ||
554 | { | ||
555 | struct stk_camera *dev; | ||
556 | struct video_device *vdev; | ||
557 | |||
558 | vdev = video_devdata(fp); | ||
559 | dev = vdev_to_camera(vdev); | ||
560 | |||
561 | if (dev == NULL || !is_present(dev)) { | ||
562 | return -ENXIO; | ||
563 | } | ||
564 | fp->private_data = dev; | ||
565 | usb_autopm_get_interface(dev->interface); | ||
566 | |||
567 | return 0; | ||
568 | } | ||
569 | |||
570 | static int v4l_stk_release(struct file *fp) | ||
571 | { | ||
572 | struct stk_camera *dev = fp->private_data; | ||
573 | |||
574 | if (dev->owner == fp) { | ||
575 | stk_stop_stream(dev); | ||
576 | stk_free_buffers(dev); | ||
577 | dev->owner = NULL; | ||
578 | } | ||
579 | |||
580 | if(is_present(dev)) | ||
581 | usb_autopm_put_interface(dev->interface); | ||
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; | ||
592 | struct stk_sio_buffer *sbuf; | ||
593 | struct stk_camera *dev = fp->private_data; | ||
594 | |||
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 | { | ||
649 | struct stk_camera *dev = fp->private_data; | ||
650 | |||
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 | } | ||
675 | static const struct vm_operations_struct stk_v4l_vm_ops = { | ||
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; | ||
685 | struct stk_camera *dev = fp->private_data; | ||
686 | struct stk_sio_buffer *sbuf = NULL; | ||
687 | |||
688 | if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED)) | ||
689 | return -EINVAL; | ||
690 | |||
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 | }, | ||
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 | }, | ||
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; | ||
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; | ||
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); | ||
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; | ||
838 | default: | ||
839 | return -EINVAL; | ||
840 | } | ||
841 | return 0; | ||
842 | } | ||
843 | |||
844 | |||
845 | static int stk_vidioc_enum_fmt_vid_cap(struct file *filp, | ||
846 | void *priv, struct v4l2_fmtdesc *fmtd) | ||
847 | { | ||
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; | ||
865 | case 4: | ||
866 | fmtd->pixelformat = V4L2_PIX_FMT_YUYV; | ||
867 | strcpy(fmtd->description, "yuv4:2:2"); | ||
868 | break; | ||
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 | |||
887 | static int stk_vidioc_g_fmt_vid_cap(struct file *filp, | ||
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; | ||
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 | |||
915 | static int stk_vidioc_try_fmt_vid_cap(struct file *filp, | ||
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: | ||
923 | case V4L2_PIX_FMT_YUYV: | ||
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 | |||
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; | ||
964 | while (i < ARRAY_SIZE(stk_sizes) && | ||
965 | stk_sizes[i].m != dev->vsettings.mode) | ||
966 | i++; | ||
967 | if (i == ARRAY_SIZE(stk_sizes)) { | ||
968 | STK_ERROR("Something is broken in %s\n", __func__); | ||
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 | |||
992 | static int stk_vidioc_s_fmt_vid_cap(struct file *filp, | ||
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; | ||
1006 | ret = stk_vidioc_try_fmt_vid_cap(filp, priv, fmtd); | ||
1007 | if (ret) | ||
1008 | return ret; | ||
1009 | dev->owner = filp; | ||
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); | ||
1017 | return stk_setup_format(dev); | ||
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; | ||
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 | { | ||
1049 | struct stk_camera *dev = priv; | ||
1050 | struct stk_sio_buffer *sbuf; | ||
1051 | |||
1052 | if (buf->index >= dev->n_sbufs) | ||
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; | ||
1065 | |||
1066 | if (buf->memory != V4L2_MEMORY_MMAP) | ||
1067 | return -EINVAL; | ||
1068 | |||
1069 | if (buf->index >= dev->n_sbufs) | ||
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 | |||
1091 | if (!is_streaming(dev)) | ||
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 | { | ||
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; | ||
1154 | return 0; | ||
1155 | } | ||
1156 | |||
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 | |||
1176 | static struct v4l2_file_operations v4l_stk_fops = { | ||
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, | ||
1184 | }; | ||
1185 | |||
1186 | static const struct v4l2_ioctl_ops v4l_stk_ioctl_ops = { | ||
1187 | .vidioc_querycap = stk_vidioc_querycap, | ||
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, | ||
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, | ||
1206 | .vidioc_enum_framesizes = stk_vidioc_enum_framesizes, | ||
1207 | }; | ||
1208 | |||
1209 | static void stk_v4l_dev_release(struct video_device *vd) | ||
1210 | { | ||
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); | ||
1217 | } | ||
1218 | |||
1219 | static struct video_device stk_v4l_data = { | ||
1220 | .name = "stkwebcam", | ||
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 | |||
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; | ||
1235 | dev->vdev.parent = &dev->interface->dev; | ||
1236 | err = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1); | ||
1237 | if (err) | ||
1238 | STK_ERROR("v4l registration failed\n"); | ||
1239 | else | ||
1240 | STK_INFO("Syntek USB2.0 Camera is now controlling device %s\n", | ||
1241 | video_device_node_name(&dev->vdev)); | ||
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; | ||
1252 | int err = 0; | ||
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 | |||
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 | ||
1286 | && usb_endpoint_is_isoc_in(endpoint)) { | ||
1287 | /* we found an isoc in endpoint */ | ||
1288 | dev->isoc_ep = usb_endpoint_num(endpoint); | ||
1289 | break; | ||
1290 | } | ||
1291 | } | ||
1292 | if (!dev->isoc_ep) { | ||
1293 | STK_ERROR("Could not find isoc-in endpoint"); | ||
1294 | err = -ENODEV; | ||
1295 | goto error; | ||
1296 | } | ||
1297 | dev->vsettings.brightness = 0x7fff; | ||
1298 | dev->vsettings.palette = V4L2_PIX_FMT_RGB565; | ||
1299 | dev->vsettings.mode = MODE_VGA; | ||
1300 | dev->frame_size = 640 * 480 * 2; | ||
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) { | ||
1309 | goto error; | ||
1310 | } | ||
1311 | |||
1312 | return 0; | ||
1313 | |||
1314 | error: | ||
1315 | kfree(dev); | ||
1316 | return err; | ||
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); | ||
1327 | |||
1328 | STK_INFO("Syntek USB2.0 Camera release resources device %s\n", | ||
1329 | video_device_node_name(&dev->vdev)); | ||
1330 | |||
1331 | video_unregister_device(&dev->vdev); | ||
1332 | } | ||
1333 | |||
1334 | #ifdef CONFIG_PM | ||
1335 | static int stk_camera_suspend(struct usb_interface *intf, pm_message_t message) | ||
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 | |||
1346 | static int stk_camera_resume(struct usb_interface *intf) | ||
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 | |||
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, | ||
1365 | #ifdef CONFIG_PM | ||
1366 | .suspend = stk_camera_suspend, | ||
1367 | .resume = stk_camera_resume, | ||
1368 | #endif | ||
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 | |||