Commit | Line | Data |
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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 | ||
4fd466a1 | 41 | static bool hflip; |
ec16dae5 | 42 | module_param(hflip, bool, 0444); |
4fd466a1 | 43 | MODULE_PARM_DESC(hflip, "Horizontal image flip (mirror). Defaults to 0"); |
ec16dae5 | 44 | |
4fd466a1 | 45 | static bool vflip; |
ec16dae5 | 46 | module_param(vflip, bool, 0444); |
4fd466a1 | 47 | MODULE_PARM_DESC(vflip, "Vertical image flip. Defaults to 0"); |
ec16dae5 JVJ |
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 | ||
7b1c8f58 AS |
58 | /* bool for webcam LED management */ |
59 | int first_init = 1; | |
ec16dae5 JVJ |
60 | |
61 | /* Some cameras have audio interfaces, we aren't interested in those */ | |
62 | static struct usb_device_id stkwebcam_table[] = { | |
63 | { USB_DEVICE_AND_INTERFACE_INFO(0x174f, 0xa311, 0xff, 0xff, 0xff) }, | |
64 | { USB_DEVICE_AND_INTERFACE_INFO(0x05e1, 0x0501, 0xff, 0xff, 0xff) }, | |
65 | { } | |
66 | }; | |
67 | MODULE_DEVICE_TABLE(usb, stkwebcam_table); | |
68 | ||
ec16dae5 JVJ |
69 | /* |
70 | * Basic stuff | |
71 | */ | |
72 | int stk_camera_write_reg(struct stk_camera *dev, u16 index, u8 value) | |
73 | { | |
74 | struct usb_device *udev = dev->udev; | |
75 | int ret; | |
76 | ||
77 | ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), | |
78 | 0x01, | |
79 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
80 | value, | |
81 | index, | |
82 | NULL, | |
83 | 0, | |
84 | 500); | |
85 | if (ret < 0) | |
86 | return ret; | |
87 | else | |
88 | return 0; | |
89 | } | |
90 | ||
91 | int stk_camera_read_reg(struct stk_camera *dev, u16 index, int *value) | |
92 | { | |
93 | struct usb_device *udev = dev->udev; | |
94 | int ret; | |
95 | ||
96 | ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), | |
97 | 0x00, | |
98 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
99 | 0x00, | |
100 | index, | |
101 | (u8 *) value, | |
102 | sizeof(u8), | |
103 | 500); | |
104 | if (ret < 0) | |
105 | return ret; | |
106 | else | |
107 | return 0; | |
108 | } | |
109 | ||
110 | static int stk_start_stream(struct stk_camera *dev) | |
111 | { | |
112 | int value; | |
113 | int i, ret; | |
114 | int value_116, value_117; | |
115 | ||
116 | if (!is_present(dev)) | |
117 | return -ENODEV; | |
118 | if (!is_memallocd(dev) || !is_initialised(dev)) { | |
119 | STK_ERROR("FIXME: Buffers are not allocated\n"); | |
120 | return -EFAULT; | |
121 | } | |
122 | ret = usb_set_interface(dev->udev, 0, 5); | |
123 | ||
124 | if (ret < 0) | |
125 | STK_ERROR("usb_set_interface failed !\n"); | |
126 | if (stk_sensor_wakeup(dev)) | |
127 | STK_ERROR("error awaking the sensor\n"); | |
128 | ||
129 | stk_camera_read_reg(dev, 0x0116, &value_116); | |
130 | stk_camera_read_reg(dev, 0x0117, &value_117); | |
131 | ||
132 | stk_camera_write_reg(dev, 0x0116, 0x0000); | |
133 | stk_camera_write_reg(dev, 0x0117, 0x0000); | |
134 | ||
135 | stk_camera_read_reg(dev, 0x0100, &value); | |
136 | stk_camera_write_reg(dev, 0x0100, value | 0x80); | |
137 | ||
138 | stk_camera_write_reg(dev, 0x0116, value_116); | |
139 | stk_camera_write_reg(dev, 0x0117, value_117); | |
140 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
141 | if (dev->isobufs[i].urb) { | |
142 | ret = usb_submit_urb(dev->isobufs[i].urb, GFP_KERNEL); | |
143 | atomic_inc(&dev->urbs_used); | |
144 | if (ret) | |
145 | return ret; | |
146 | } | |
147 | } | |
148 | set_streaming(dev); | |
149 | return 0; | |
150 | } | |
151 | ||
152 | static int stk_stop_stream(struct stk_camera *dev) | |
153 | { | |
154 | int value; | |
155 | int i; | |
156 | if (is_present(dev)) { | |
157 | stk_camera_read_reg(dev, 0x0100, &value); | |
158 | stk_camera_write_reg(dev, 0x0100, value & ~0x80); | |
159 | if (dev->isobufs != NULL) { | |
160 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
161 | if (dev->isobufs[i].urb) | |
162 | usb_kill_urb(dev->isobufs[i].urb); | |
163 | } | |
164 | } | |
165 | unset_streaming(dev); | |
166 | ||
167 | if (usb_set_interface(dev->udev, 0, 0)) | |
168 | STK_ERROR("usb_set_interface failed !\n"); | |
169 | if (stk_sensor_sleep(dev)) | |
170 | STK_ERROR("error suspending the sensor\n"); | |
171 | } | |
172 | return 0; | |
173 | } | |
174 | ||
175 | /* | |
176 | * This seems to be the shortest init sequence we | |
177 | * must do in order to find the sensor | |
178 | * Bit 5 of reg. 0x0000 here is important, when reset to 0 the sensor | |
179 | * is also reset. Maybe powers down it? | |
180 | * Rest of values don't make a difference | |
181 | */ | |
182 | ||
183 | static struct regval stk1125_initvals[] = { | |
184 | /*TODO: What means this sequence? */ | |
185 | {0x0000, 0x24}, | |
186 | {0x0100, 0x21}, | |
187 | {0x0002, 0x68}, | |
188 | {0x0003, 0x80}, | |
189 | {0x0005, 0x00}, | |
190 | {0x0007, 0x03}, | |
191 | {0x000d, 0x00}, | |
192 | {0x000f, 0x02}, | |
193 | {0x0300, 0x12}, | |
194 | {0x0350, 0x41}, | |
195 | {0x0351, 0x00}, | |
196 | {0x0352, 0x00}, | |
197 | {0x0353, 0x00}, | |
198 | {0x0018, 0x10}, | |
199 | {0x0019, 0x00}, | |
200 | {0x001b, 0x0e}, | |
201 | {0x001c, 0x46}, | |
202 | {0x0300, 0x80}, | |
203 | {0x001a, 0x04}, | |
204 | {0x0110, 0x00}, | |
205 | {0x0111, 0x00}, | |
206 | {0x0112, 0x00}, | |
207 | {0x0113, 0x00}, | |
208 | ||
209 | {0xffff, 0xff}, | |
210 | }; | |
211 | ||
212 | ||
213 | static int stk_initialise(struct stk_camera *dev) | |
214 | { | |
215 | struct regval *rv; | |
216 | int ret; | |
217 | if (!is_present(dev)) | |
218 | return -ENODEV; | |
219 | if (is_initialised(dev)) | |
220 | return 0; | |
221 | rv = stk1125_initvals; | |
222 | while (rv->reg != 0xffff) { | |
223 | ret = stk_camera_write_reg(dev, rv->reg, rv->val); | |
224 | if (ret) | |
225 | return ret; | |
226 | rv++; | |
227 | } | |
228 | if (stk_sensor_init(dev) == 0) { | |
229 | set_initialised(dev); | |
230 | return 0; | |
231 | } else | |
232 | return -1; | |
233 | } | |
234 | ||
ec16dae5 JVJ |
235 | /* *********************************************** */ |
236 | /* | |
237 | * This function is called as an URB transfert is complete (Isochronous pipe). | |
238 | * So, the traitement is done in interrupt time, so it has be fast, not crash, | |
239 | * and not stall. Neat. | |
240 | */ | |
241 | static void stk_isoc_handler(struct urb *urb) | |
242 | { | |
243 | int i; | |
244 | int ret; | |
245 | int framelen; | |
246 | unsigned long flags; | |
247 | ||
248 | unsigned char *fill = NULL; | |
249 | unsigned char *iso_buf = NULL; | |
250 | ||
251 | struct stk_camera *dev; | |
252 | struct stk_sio_buffer *fb; | |
253 | ||
254 | dev = (struct stk_camera *) urb->context; | |
255 | ||
256 | if (dev == NULL) { | |
257 | STK_ERROR("isoc_handler called with NULL device !\n"); | |
258 | return; | |
259 | } | |
260 | ||
261 | if (urb->status == -ENOENT || urb->status == -ECONNRESET | |
262 | || urb->status == -ESHUTDOWN) { | |
263 | atomic_dec(&dev->urbs_used); | |
264 | return; | |
265 | } | |
266 | ||
267 | spin_lock_irqsave(&dev->spinlock, flags); | |
268 | ||
269 | if (urb->status != -EINPROGRESS && urb->status != 0) { | |
270 | STK_ERROR("isoc_handler: urb->status == %d\n", urb->status); | |
271 | goto resubmit; | |
272 | } | |
273 | ||
274 | if (list_empty(&dev->sio_avail)) { | |
275 | /*FIXME Stop streaming after a while */ | |
276 | (void) (printk_ratelimit() && | |
277 | STK_ERROR("isoc_handler without available buffer!\n")); | |
278 | goto resubmit; | |
279 | } | |
280 | fb = list_first_entry(&dev->sio_avail, | |
281 | struct stk_sio_buffer, list); | |
282 | fill = fb->buffer + fb->v4lbuf.bytesused; | |
283 | ||
284 | for (i = 0; i < urb->number_of_packets; i++) { | |
285 | if (urb->iso_frame_desc[i].status != 0) { | |
286 | if (urb->iso_frame_desc[i].status != -EXDEV) | |
287 | STK_ERROR("Frame %d has error %d\n", i, | |
288 | urb->iso_frame_desc[i].status); | |
289 | continue; | |
290 | } | |
291 | framelen = urb->iso_frame_desc[i].actual_length; | |
292 | iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset; | |
293 | ||
294 | if (framelen <= 4) | |
295 | continue; /* no data */ | |
296 | ||
297 | /* | |
298 | * we found something informational from there | |
299 | * the isoc frames have to type of headers | |
300 | * type1: 00 xx 00 00 or 20 xx 00 00 | |
301 | * type2: 80 xx 00 00 00 00 00 00 or a0 xx 00 00 00 00 00 00 | |
302 | * xx is a sequencer which has never been seen over 0x3f | |
303 | * imho data written down looks like bayer, i see similarities | |
304 | * after every 640 bytes | |
305 | */ | |
306 | if (*iso_buf & 0x80) { | |
307 | framelen -= 8; | |
308 | iso_buf += 8; | |
309 | /* This marks a new frame */ | |
310 | if (fb->v4lbuf.bytesused != 0 | |
311 | && fb->v4lbuf.bytesused != dev->frame_size) { | |
312 | (void) (printk_ratelimit() && | |
313 | STK_ERROR("frame %d, " | |
314 | "bytesused=%d, skipping\n", | |
315 | i, fb->v4lbuf.bytesused)); | |
316 | fb->v4lbuf.bytesused = 0; | |
317 | fill = fb->buffer; | |
318 | } else if (fb->v4lbuf.bytesused == dev->frame_size) { | |
b1855907 JVJ |
319 | if (list_is_singular(&dev->sio_avail)) { |
320 | /* Always reuse the last buffer */ | |
321 | fb->v4lbuf.bytesused = 0; | |
322 | fill = fb->buffer; | |
323 | } else { | |
324 | list_move_tail(dev->sio_avail.next, | |
325 | &dev->sio_full); | |
326 | wake_up(&dev->wait_frame); | |
327 | fb = list_first_entry(&dev->sio_avail, | |
328 | struct stk_sio_buffer, list); | |
329 | fb->v4lbuf.bytesused = 0; | |
330 | fill = fb->buffer; | |
ec16dae5 | 331 | } |
ec16dae5 JVJ |
332 | } |
333 | } else { | |
334 | framelen -= 4; | |
335 | iso_buf += 4; | |
336 | } | |
337 | ||
338 | /* Our buffer is full !!! */ | |
339 | if (framelen + fb->v4lbuf.bytesused > dev->frame_size) { | |
340 | (void) (printk_ratelimit() && | |
341 | STK_ERROR("Frame buffer overflow, lost sync\n")); | |
342 | /*FIXME Do something here? */ | |
343 | continue; | |
344 | } | |
345 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
346 | memcpy(fill, iso_buf, framelen); | |
347 | spin_lock_irqsave(&dev->spinlock, flags); | |
348 | fill += framelen; | |
349 | ||
350 | /* New size of our buffer */ | |
351 | fb->v4lbuf.bytesused += framelen; | |
352 | } | |
353 | ||
354 | resubmit: | |
355 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
356 | urb->dev = dev->udev; | |
357 | ret = usb_submit_urb(urb, GFP_ATOMIC); | |
358 | if (ret != 0) { | |
359 | STK_ERROR("Error (%d) re-submitting urb in stk_isoc_handler.\n", | |
360 | ret); | |
361 | } | |
362 | } | |
363 | ||
364 | /* -------------------------------------------- */ | |
365 | ||
366 | static int stk_prepare_iso(struct stk_camera *dev) | |
367 | { | |
368 | void *kbuf; | |
369 | int i, j; | |
370 | struct urb *urb; | |
371 | struct usb_device *udev; | |
372 | ||
373 | if (dev == NULL) | |
374 | return -ENXIO; | |
375 | udev = dev->udev; | |
376 | ||
377 | if (dev->isobufs) | |
378 | STK_ERROR("isobufs already allocated. Bad\n"); | |
379 | else | |
9884d7be TM |
380 | dev->isobufs = kcalloc(MAX_ISO_BUFS, sizeof(*dev->isobufs), |
381 | GFP_KERNEL); | |
ec16dae5 JVJ |
382 | if (dev->isobufs == NULL) { |
383 | STK_ERROR("Unable to allocate iso buffers\n"); | |
384 | return -ENOMEM; | |
385 | } | |
386 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
387 | if (dev->isobufs[i].data == NULL) { | |
388 | kbuf = kzalloc(ISO_BUFFER_SIZE, GFP_KERNEL); | |
389 | if (kbuf == NULL) { | |
390 | STK_ERROR("Failed to allocate iso buffer %d\n", | |
391 | i); | |
392 | goto isobufs_out; | |
393 | } | |
394 | dev->isobufs[i].data = kbuf; | |
395 | } else | |
396 | STK_ERROR("isobuf data already allocated\n"); | |
397 | if (dev->isobufs[i].urb == NULL) { | |
398 | urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); | |
399 | if (urb == NULL) { | |
400 | STK_ERROR("Failed to allocate URB %d\n", i); | |
401 | goto isobufs_out; | |
402 | } | |
403 | dev->isobufs[i].urb = urb; | |
404 | } else { | |
405 | STK_ERROR("Killing URB\n"); | |
406 | usb_kill_urb(dev->isobufs[i].urb); | |
407 | urb = dev->isobufs[i].urb; | |
408 | } | |
409 | urb->interval = 1; | |
410 | urb->dev = udev; | |
411 | urb->pipe = usb_rcvisocpipe(udev, dev->isoc_ep); | |
412 | urb->transfer_flags = URB_ISO_ASAP; | |
413 | urb->transfer_buffer = dev->isobufs[i].data; | |
414 | urb->transfer_buffer_length = ISO_BUFFER_SIZE; | |
415 | urb->complete = stk_isoc_handler; | |
416 | urb->context = dev; | |
417 | urb->start_frame = 0; | |
418 | urb->number_of_packets = ISO_FRAMES_PER_DESC; | |
419 | ||
420 | for (j = 0; j < ISO_FRAMES_PER_DESC; j++) { | |
421 | urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE; | |
422 | urb->iso_frame_desc[j].length = ISO_MAX_FRAME_SIZE; | |
423 | } | |
424 | } | |
425 | set_memallocd(dev); | |
426 | return 0; | |
427 | ||
428 | isobufs_out: | |
429 | for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].data; i++) | |
430 | kfree(dev->isobufs[i].data); | |
431 | for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].urb; i++) | |
432 | usb_free_urb(dev->isobufs[i].urb); | |
433 | kfree(dev->isobufs); | |
434 | dev->isobufs = NULL; | |
435 | return -ENOMEM; | |
436 | } | |
437 | ||
438 | static void stk_clean_iso(struct stk_camera *dev) | |
439 | { | |
440 | int i; | |
441 | ||
442 | if (dev == NULL || dev->isobufs == NULL) | |
443 | return; | |
444 | ||
445 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
446 | struct urb *urb; | |
447 | ||
448 | urb = dev->isobufs[i].urb; | |
449 | if (urb) { | |
f051ae18 | 450 | if (atomic_read(&dev->urbs_used) && is_present(dev)) |
ec16dae5 JVJ |
451 | usb_kill_urb(urb); |
452 | usb_free_urb(urb); | |
453 | } | |
454 | kfree(dev->isobufs[i].data); | |
455 | } | |
456 | kfree(dev->isobufs); | |
457 | dev->isobufs = NULL; | |
458 | unset_memallocd(dev); | |
459 | } | |
460 | ||
461 | static int stk_setup_siobuf(struct stk_camera *dev, int index) | |
462 | { | |
463 | struct stk_sio_buffer *buf = dev->sio_bufs + index; | |
464 | INIT_LIST_HEAD(&buf->list); | |
465 | buf->v4lbuf.length = PAGE_ALIGN(dev->frame_size); | |
466 | buf->buffer = vmalloc_user(buf->v4lbuf.length); | |
467 | if (buf->buffer == NULL) | |
468 | return -ENOMEM; | |
469 | buf->mapcount = 0; | |
470 | buf->dev = dev; | |
471 | buf->v4lbuf.index = index; | |
472 | buf->v4lbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
473 | buf->v4lbuf.field = V4L2_FIELD_NONE; | |
474 | buf->v4lbuf.memory = V4L2_MEMORY_MMAP; | |
475 | buf->v4lbuf.m.offset = 2*index*buf->v4lbuf.length; | |
476 | return 0; | |
477 | } | |
478 | ||
479 | static int stk_free_sio_buffers(struct stk_camera *dev) | |
480 | { | |
481 | int i; | |
482 | int nbufs; | |
483 | unsigned long flags; | |
484 | if (dev->n_sbufs == 0 || dev->sio_bufs == NULL) | |
485 | return 0; | |
486 | /* | |
487 | * If any buffers are mapped, we cannot free them at all. | |
488 | */ | |
489 | for (i = 0; i < dev->n_sbufs; i++) { | |
490 | if (dev->sio_bufs[i].mapcount > 0) | |
491 | return -EBUSY; | |
492 | } | |
493 | /* | |
494 | * OK, let's do it. | |
495 | */ | |
496 | spin_lock_irqsave(&dev->spinlock, flags); | |
497 | INIT_LIST_HEAD(&dev->sio_avail); | |
498 | INIT_LIST_HEAD(&dev->sio_full); | |
499 | nbufs = dev->n_sbufs; | |
500 | dev->n_sbufs = 0; | |
501 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
502 | for (i = 0; i < nbufs; i++) { | |
503 | if (dev->sio_bufs[i].buffer != NULL) | |
504 | vfree(dev->sio_bufs[i].buffer); | |
505 | } | |
506 | kfree(dev->sio_bufs); | |
507 | dev->sio_bufs = NULL; | |
508 | return 0; | |
509 | } | |
510 | ||
511 | static int stk_prepare_sio_buffers(struct stk_camera *dev, unsigned n_sbufs) | |
512 | { | |
513 | int i; | |
514 | if (dev->sio_bufs != NULL) | |
515 | STK_ERROR("sio_bufs already allocated\n"); | |
516 | else { | |
517 | dev->sio_bufs = kzalloc(n_sbufs * sizeof(struct stk_sio_buffer), | |
518 | GFP_KERNEL); | |
519 | if (dev->sio_bufs == NULL) | |
520 | return -ENOMEM; | |
521 | for (i = 0; i < n_sbufs; i++) { | |
522 | if (stk_setup_siobuf(dev, i)) | |
b57ce417 | 523 | return (dev->n_sbufs > 1 ? 0 : -ENOMEM); |
ec16dae5 JVJ |
524 | dev->n_sbufs = i+1; |
525 | } | |
526 | } | |
527 | return 0; | |
528 | } | |
529 | ||
530 | static int stk_allocate_buffers(struct stk_camera *dev, unsigned n_sbufs) | |
531 | { | |
532 | int err; | |
533 | err = stk_prepare_iso(dev); | |
534 | if (err) { | |
535 | stk_clean_iso(dev); | |
536 | return err; | |
537 | } | |
538 | err = stk_prepare_sio_buffers(dev, n_sbufs); | |
539 | if (err) { | |
540 | stk_free_sio_buffers(dev); | |
541 | return err; | |
542 | } | |
543 | return 0; | |
544 | } | |
545 | ||
546 | static void stk_free_buffers(struct stk_camera *dev) | |
547 | { | |
548 | stk_clean_iso(dev); | |
549 | stk_free_sio_buffers(dev); | |
550 | } | |
551 | /* -------------------------------------------- */ | |
552 | ||
553 | /* v4l file operations */ | |
554 | ||
bec43661 | 555 | static int v4l_stk_open(struct file *fp) |
ec16dae5 JVJ |
556 | { |
557 | struct stk_camera *dev; | |
558 | struct video_device *vdev; | |
559 | ||
560 | vdev = video_devdata(fp); | |
561 | dev = vdev_to_camera(vdev); | |
562 | ||
b57ce417 | 563 | if (dev == NULL || !is_present(dev)) |
ec16dae5 | 564 | return -ENXIO; |
7b1c8f58 AS |
565 | |
566 | if (!first_init) | |
567 | stk_camera_write_reg(dev, 0x0, 0x24); | |
568 | else | |
569 | first_init = 0; | |
570 | ||
4aaec3ea | 571 | fp->private_data = dev; |
1fdd61c0 | 572 | usb_autopm_get_interface(dev->interface); |
ec16dae5 JVJ |
573 | |
574 | return 0; | |
575 | } | |
576 | ||
bec43661 | 577 | static int v4l_stk_release(struct file *fp) |
ec16dae5 | 578 | { |
4aaec3ea | 579 | struct stk_camera *dev = fp->private_data; |
ec16dae5 | 580 | |
f051ae18 DE |
581 | if (dev->owner == fp) { |
582 | stk_stop_stream(dev); | |
583 | stk_free_buffers(dev); | |
7b1c8f58 | 584 | stk_camera_write_reg(dev, 0x0, 0x49); /* turn off the LED */ |
47a7e6f8 | 585 | unset_initialised(dev); |
f051ae18 | 586 | dev->owner = NULL; |
ec16dae5 JVJ |
587 | } |
588 | ||
b57ce417 | 589 | if (is_present(dev)) |
f051ae18 | 590 | usb_autopm_put_interface(dev->interface); |
ec16dae5 JVJ |
591 | |
592 | return 0; | |
593 | } | |
594 | ||
595 | static ssize_t v4l_stk_read(struct file *fp, char __user *buf, | |
596 | size_t count, loff_t *f_pos) | |
597 | { | |
598 | int i; | |
599 | int ret; | |
600 | unsigned long flags; | |
ec16dae5 | 601 | struct stk_sio_buffer *sbuf; |
4aaec3ea | 602 | struct stk_camera *dev = fp->private_data; |
ec16dae5 | 603 | |
ec16dae5 JVJ |
604 | if (!is_present(dev)) |
605 | return -EIO; | |
606 | if (dev->owner && dev->owner != fp) | |
607 | return -EBUSY; | |
608 | dev->owner = fp; | |
609 | if (!is_streaming(dev)) { | |
610 | if (stk_initialise(dev) | |
611 | || stk_allocate_buffers(dev, 3) | |
612 | || stk_start_stream(dev)) | |
613 | return -ENOMEM; | |
614 | spin_lock_irqsave(&dev->spinlock, flags); | |
615 | for (i = 0; i < dev->n_sbufs; i++) { | |
616 | list_add_tail(&dev->sio_bufs[i].list, &dev->sio_avail); | |
617 | dev->sio_bufs[i].v4lbuf.flags = V4L2_BUF_FLAG_QUEUED; | |
618 | } | |
619 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
620 | } | |
621 | if (*f_pos == 0) { | |
622 | if (fp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full)) | |
623 | return -EWOULDBLOCK; | |
624 | ret = wait_event_interruptible(dev->wait_frame, | |
625 | !list_empty(&dev->sio_full) || !is_present(dev)); | |
626 | if (ret) | |
627 | return ret; | |
628 | if (!is_present(dev)) | |
629 | return -EIO; | |
630 | } | |
631 | if (count + *f_pos > dev->frame_size) | |
632 | count = dev->frame_size - *f_pos; | |
633 | spin_lock_irqsave(&dev->spinlock, flags); | |
634 | if (list_empty(&dev->sio_full)) { | |
635 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
636 | STK_ERROR("BUG: No siobufs ready\n"); | |
637 | return 0; | |
638 | } | |
639 | sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list); | |
640 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
641 | ||
642 | if (copy_to_user(buf, sbuf->buffer + *f_pos, count)) | |
643 | return -EFAULT; | |
644 | ||
645 | *f_pos += count; | |
646 | ||
647 | if (*f_pos >= dev->frame_size) { | |
648 | *f_pos = 0; | |
649 | spin_lock_irqsave(&dev->spinlock, flags); | |
650 | list_move_tail(&sbuf->list, &dev->sio_avail); | |
651 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
652 | } | |
653 | return count; | |
654 | } | |
655 | ||
656 | static unsigned int v4l_stk_poll(struct file *fp, poll_table *wait) | |
657 | { | |
4aaec3ea | 658 | struct stk_camera *dev = fp->private_data; |
ec16dae5 | 659 | |
ec16dae5 JVJ |
660 | poll_wait(fp, &dev->wait_frame, wait); |
661 | ||
662 | if (!is_present(dev)) | |
663 | return POLLERR; | |
664 | ||
665 | if (!list_empty(&dev->sio_full)) | |
b57ce417 | 666 | return POLLIN | POLLRDNORM; |
ec16dae5 JVJ |
667 | |
668 | return 0; | |
669 | } | |
670 | ||
671 | ||
672 | static void stk_v4l_vm_open(struct vm_area_struct *vma) | |
673 | { | |
674 | struct stk_sio_buffer *sbuf = vma->vm_private_data; | |
675 | sbuf->mapcount++; | |
676 | } | |
677 | static void stk_v4l_vm_close(struct vm_area_struct *vma) | |
678 | { | |
679 | struct stk_sio_buffer *sbuf = vma->vm_private_data; | |
680 | sbuf->mapcount--; | |
681 | if (sbuf->mapcount == 0) | |
682 | sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_MAPPED; | |
683 | } | |
f0f37e2f | 684 | static const struct vm_operations_struct stk_v4l_vm_ops = { |
ec16dae5 JVJ |
685 | .open = stk_v4l_vm_open, |
686 | .close = stk_v4l_vm_close | |
687 | }; | |
688 | ||
689 | static int v4l_stk_mmap(struct file *fp, struct vm_area_struct *vma) | |
690 | { | |
691 | unsigned int i; | |
692 | int ret; | |
693 | unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; | |
4aaec3ea | 694 | struct stk_camera *dev = fp->private_data; |
ec16dae5 JVJ |
695 | struct stk_sio_buffer *sbuf = NULL; |
696 | ||
697 | if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED)) | |
698 | return -EINVAL; | |
699 | ||
ec16dae5 JVJ |
700 | for (i = 0; i < dev->n_sbufs; i++) { |
701 | if (dev->sio_bufs[i].v4lbuf.m.offset == offset) { | |
702 | sbuf = dev->sio_bufs + i; | |
703 | break; | |
704 | } | |
705 | } | |
706 | if (sbuf == NULL) | |
707 | return -EINVAL; | |
708 | ret = remap_vmalloc_range(vma, sbuf->buffer, 0); | |
709 | if (ret) | |
710 | return ret; | |
711 | vma->vm_flags |= VM_DONTEXPAND; | |
712 | vma->vm_private_data = sbuf; | |
713 | vma->vm_ops = &stk_v4l_vm_ops; | |
714 | sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_MAPPED; | |
715 | stk_v4l_vm_open(vma); | |
716 | return 0; | |
717 | } | |
718 | ||
719 | /* v4l ioctl handlers */ | |
720 | ||
721 | static int stk_vidioc_querycap(struct file *filp, | |
722 | void *priv, struct v4l2_capability *cap) | |
723 | { | |
724 | strcpy(cap->driver, "stk"); | |
725 | strcpy(cap->card, "stk"); | |
726 | cap->version = DRIVER_VERSION_NUM; | |
727 | ||
728 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | |
729 | | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; | |
730 | return 0; | |
731 | } | |
732 | ||
733 | static int stk_vidioc_enum_input(struct file *filp, | |
734 | void *priv, struct v4l2_input *input) | |
735 | { | |
736 | if (input->index != 0) | |
737 | return -EINVAL; | |
738 | ||
739 | strcpy(input->name, "Syntek USB Camera"); | |
740 | input->type = V4L2_INPUT_TYPE_CAMERA; | |
741 | return 0; | |
742 | } | |
743 | ||
744 | ||
745 | static int stk_vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
746 | { | |
747 | *i = 0; | |
748 | return 0; | |
749 | } | |
750 | ||
751 | static int stk_vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
752 | { | |
753 | if (i != 0) | |
754 | return -EINVAL; | |
755 | else | |
756 | return 0; | |
757 | } | |
758 | ||
759 | /* from vivi.c */ | |
760 | static int stk_vidioc_s_std(struct file *filp, void *priv, v4l2_std_id *a) | |
761 | { | |
762 | return 0; | |
763 | } | |
764 | ||
765 | /* List of all V4Lv2 controls supported by the driver */ | |
766 | static struct v4l2_queryctrl stk_controls[] = { | |
767 | { | |
768 | .id = V4L2_CID_BRIGHTNESS, | |
769 | .type = V4L2_CTRL_TYPE_INTEGER, | |
770 | .name = "Brightness", | |
771 | .minimum = 0, | |
772 | .maximum = 0xffff, | |
773 | .step = 0x0100, | |
774 | .default_value = 0x6000, | |
775 | }, | |
0a58d713 HV |
776 | { |
777 | .id = V4L2_CID_HFLIP, | |
778 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
779 | .name = "Horizontal Flip", | |
780 | .minimum = 0, | |
781 | .maximum = 1, | |
782 | .step = 1, | |
783 | .default_value = 1, | |
784 | }, | |
785 | { | |
786 | .id = V4L2_CID_VFLIP, | |
787 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
788 | .name = "Vertical Flip", | |
789 | .minimum = 0, | |
790 | .maximum = 1, | |
791 | .step = 1, | |
792 | .default_value = 1, | |
793 | }, | |
ec16dae5 JVJ |
794 | }; |
795 | ||
796 | static int stk_vidioc_queryctrl(struct file *filp, | |
797 | void *priv, struct v4l2_queryctrl *c) | |
798 | { | |
799 | int i; | |
800 | int nbr; | |
801 | nbr = ARRAY_SIZE(stk_controls); | |
802 | ||
803 | for (i = 0; i < nbr; i++) { | |
804 | if (stk_controls[i].id == c->id) { | |
805 | memcpy(c, &stk_controls[i], | |
806 | sizeof(struct v4l2_queryctrl)); | |
807 | return 0; | |
808 | } | |
809 | } | |
810 | return -EINVAL; | |
811 | } | |
812 | ||
813 | static int stk_vidioc_g_ctrl(struct file *filp, | |
814 | void *priv, struct v4l2_control *c) | |
815 | { | |
816 | struct stk_camera *dev = priv; | |
817 | switch (c->id) { | |
818 | case V4L2_CID_BRIGHTNESS: | |
819 | c->value = dev->vsettings.brightness; | |
820 | break; | |
0a58d713 HV |
821 | case V4L2_CID_HFLIP: |
822 | c->value = dev->vsettings.hflip; | |
823 | break; | |
824 | case V4L2_CID_VFLIP: | |
825 | c->value = dev->vsettings.vflip; | |
826 | break; | |
ec16dae5 JVJ |
827 | default: |
828 | return -EINVAL; | |
829 | } | |
830 | return 0; | |
831 | } | |
832 | ||
833 | static int stk_vidioc_s_ctrl(struct file *filp, | |
834 | void *priv, struct v4l2_control *c) | |
835 | { | |
836 | struct stk_camera *dev = priv; | |
837 | switch (c->id) { | |
838 | case V4L2_CID_BRIGHTNESS: | |
839 | dev->vsettings.brightness = c->value; | |
840 | return stk_sensor_set_brightness(dev, c->value >> 8); | |
0a58d713 HV |
841 | case V4L2_CID_HFLIP: |
842 | dev->vsettings.hflip = c->value; | |
843 | return 0; | |
844 | case V4L2_CID_VFLIP: | |
845 | dev->vsettings.vflip = c->value; | |
846 | return 0; | |
ec16dae5 JVJ |
847 | default: |
848 | return -EINVAL; | |
849 | } | |
850 | return 0; | |
851 | } | |
852 | ||
853 | ||
78b526a4 | 854 | static int stk_vidioc_enum_fmt_vid_cap(struct file *filp, |
ec16dae5 JVJ |
855 | void *priv, struct v4l2_fmtdesc *fmtd) |
856 | { | |
ec16dae5 JVJ |
857 | switch (fmtd->index) { |
858 | case 0: | |
859 | fmtd->pixelformat = V4L2_PIX_FMT_RGB565; | |
860 | strcpy(fmtd->description, "r5g6b5"); | |
861 | break; | |
862 | case 1: | |
863 | fmtd->pixelformat = V4L2_PIX_FMT_RGB565X; | |
864 | strcpy(fmtd->description, "r5g6b5BE"); | |
865 | break; | |
866 | case 2: | |
867 | fmtd->pixelformat = V4L2_PIX_FMT_UYVY; | |
868 | strcpy(fmtd->description, "yuv4:2:2"); | |
869 | break; | |
870 | case 3: | |
871 | fmtd->pixelformat = V4L2_PIX_FMT_SBGGR8; | |
872 | strcpy(fmtd->description, "Raw bayer"); | |
873 | break; | |
1112fb68 JVJ |
874 | case 4: |
875 | fmtd->pixelformat = V4L2_PIX_FMT_YUYV; | |
876 | strcpy(fmtd->description, "yuv4:2:2"); | |
877 | break; | |
ec16dae5 JVJ |
878 | default: |
879 | return -EINVAL; | |
880 | } | |
881 | return 0; | |
882 | } | |
883 | ||
884 | static struct stk_size { | |
885 | unsigned w; | |
886 | unsigned h; | |
887 | enum stk_mode m; | |
888 | } stk_sizes[] = { | |
889 | { .w = 1280, .h = 1024, .m = MODE_SXGA, }, | |
890 | { .w = 640, .h = 480, .m = MODE_VGA, }, | |
891 | { .w = 352, .h = 288, .m = MODE_CIF, }, | |
892 | { .w = 320, .h = 240, .m = MODE_QVGA, }, | |
893 | { .w = 176, .h = 144, .m = MODE_QCIF, }, | |
894 | }; | |
895 | ||
78b526a4 | 896 | static int stk_vidioc_g_fmt_vid_cap(struct file *filp, |
ec16dae5 JVJ |
897 | void *priv, struct v4l2_format *f) |
898 | { | |
899 | struct v4l2_pix_format *pix_format = &f->fmt.pix; | |
900 | struct stk_camera *dev = priv; | |
901 | int i; | |
902 | ||
b57ce417 AS |
903 | for (i = 0; i < ARRAY_SIZE(stk_sizes) && |
904 | stk_sizes[i].m != dev->vsettings.mode; i++) | |
905 | ; | |
ec16dae5 JVJ |
906 | if (i == ARRAY_SIZE(stk_sizes)) { |
907 | STK_ERROR("ERROR: mode invalid\n"); | |
908 | return -EINVAL; | |
909 | } | |
910 | pix_format->width = stk_sizes[i].w; | |
911 | pix_format->height = stk_sizes[i].h; | |
912 | pix_format->field = V4L2_FIELD_NONE; | |
913 | pix_format->colorspace = V4L2_COLORSPACE_SRGB; | |
ec16dae5 JVJ |
914 | pix_format->pixelformat = dev->vsettings.palette; |
915 | if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8) | |
916 | pix_format->bytesperline = pix_format->width; | |
917 | else | |
918 | pix_format->bytesperline = 2 * pix_format->width; | |
919 | pix_format->sizeimage = pix_format->bytesperline | |
920 | * pix_format->height; | |
921 | return 0; | |
922 | } | |
923 | ||
78b526a4 | 924 | static int stk_vidioc_try_fmt_vid_cap(struct file *filp, |
ec16dae5 JVJ |
925 | void *priv, struct v4l2_format *fmtd) |
926 | { | |
927 | int i; | |
928 | switch (fmtd->fmt.pix.pixelformat) { | |
929 | case V4L2_PIX_FMT_RGB565: | |
930 | case V4L2_PIX_FMT_RGB565X: | |
931 | case V4L2_PIX_FMT_UYVY: | |
1112fb68 | 932 | case V4L2_PIX_FMT_YUYV: |
ec16dae5 JVJ |
933 | case V4L2_PIX_FMT_SBGGR8: |
934 | break; | |
935 | default: | |
936 | return -EINVAL; | |
937 | } | |
938 | for (i = 1; i < ARRAY_SIZE(stk_sizes); i++) { | |
939 | if (fmtd->fmt.pix.width > stk_sizes[i].w) | |
940 | break; | |
941 | } | |
942 | if (i == ARRAY_SIZE(stk_sizes) | |
943 | || (abs(fmtd->fmt.pix.width - stk_sizes[i-1].w) | |
944 | < abs(fmtd->fmt.pix.width - stk_sizes[i].w))) { | |
945 | fmtd->fmt.pix.height = stk_sizes[i-1].h; | |
946 | fmtd->fmt.pix.width = stk_sizes[i-1].w; | |
947 | fmtd->fmt.pix.priv = i - 1; | |
948 | } else { | |
949 | fmtd->fmt.pix.height = stk_sizes[i].h; | |
950 | fmtd->fmt.pix.width = stk_sizes[i].w; | |
951 | fmtd->fmt.pix.priv = i; | |
952 | } | |
953 | ||
954 | fmtd->fmt.pix.field = V4L2_FIELD_NONE; | |
955 | fmtd->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; | |
956 | if (fmtd->fmt.pix.pixelformat == V4L2_PIX_FMT_SBGGR8) | |
957 | fmtd->fmt.pix.bytesperline = fmtd->fmt.pix.width; | |
958 | else | |
959 | fmtd->fmt.pix.bytesperline = 2 * fmtd->fmt.pix.width; | |
960 | fmtd->fmt.pix.sizeimage = fmtd->fmt.pix.bytesperline | |
961 | * fmtd->fmt.pix.height; | |
962 | return 0; | |
963 | } | |
964 | ||
1fdd61c0 JVJ |
965 | static int stk_setup_format(struct stk_camera *dev) |
966 | { | |
967 | int i = 0; | |
968 | int depth; | |
969 | if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8) | |
970 | depth = 1; | |
971 | else | |
972 | depth = 2; | |
77f2c2db RK |
973 | while (i < ARRAY_SIZE(stk_sizes) && |
974 | stk_sizes[i].m != dev->vsettings.mode) | |
1fdd61c0 JVJ |
975 | i++; |
976 | if (i == ARRAY_SIZE(stk_sizes)) { | |
7e28adb2 | 977 | STK_ERROR("Something is broken in %s\n", __func__); |
1fdd61c0 JVJ |
978 | return -EFAULT; |
979 | } | |
980 | /* This registers controls some timings, not sure of what. */ | |
981 | stk_camera_write_reg(dev, 0x001b, 0x0e); | |
982 | if (dev->vsettings.mode == MODE_SXGA) | |
983 | stk_camera_write_reg(dev, 0x001c, 0x0e); | |
984 | else | |
985 | stk_camera_write_reg(dev, 0x001c, 0x46); | |
986 | /* | |
987 | * Registers 0x0115 0x0114 are the size of each line (bytes), | |
988 | * regs 0x0117 0x0116 are the heigth of the image. | |
989 | */ | |
990 | stk_camera_write_reg(dev, 0x0115, | |
991 | ((stk_sizes[i].w * depth) >> 8) & 0xff); | |
992 | stk_camera_write_reg(dev, 0x0114, | |
993 | (stk_sizes[i].w * depth) & 0xff); | |
994 | stk_camera_write_reg(dev, 0x0117, | |
995 | (stk_sizes[i].h >> 8) & 0xff); | |
996 | stk_camera_write_reg(dev, 0x0116, | |
997 | stk_sizes[i].h & 0xff); | |
998 | return stk_sensor_configure(dev); | |
999 | } | |
1000 | ||
78b526a4 | 1001 | static int stk_vidioc_s_fmt_vid_cap(struct file *filp, |
ec16dae5 JVJ |
1002 | void *priv, struct v4l2_format *fmtd) |
1003 | { | |
1004 | int ret; | |
1005 | struct stk_camera *dev = priv; | |
1006 | ||
1007 | if (dev == NULL) | |
1008 | return -ENODEV; | |
1009 | if (!is_present(dev)) | |
1010 | return -ENODEV; | |
1011 | if (is_streaming(dev)) | |
1012 | return -EBUSY; | |
1013 | if (dev->owner && dev->owner != filp) | |
1014 | return -EBUSY; | |
78b526a4 | 1015 | ret = stk_vidioc_try_fmt_vid_cap(filp, priv, fmtd); |
ec16dae5 JVJ |
1016 | if (ret) |
1017 | return ret; | |
1fdd61c0 | 1018 | dev->owner = filp; |
ec16dae5 JVJ |
1019 | |
1020 | dev->vsettings.palette = fmtd->fmt.pix.pixelformat; | |
1021 | stk_free_buffers(dev); | |
1022 | dev->frame_size = fmtd->fmt.pix.sizeimage; | |
1023 | dev->vsettings.mode = stk_sizes[fmtd->fmt.pix.priv].m; | |
1024 | ||
1025 | stk_initialise(dev); | |
1fdd61c0 | 1026 | return stk_setup_format(dev); |
ec16dae5 JVJ |
1027 | } |
1028 | ||
1029 | static int stk_vidioc_reqbufs(struct file *filp, | |
1030 | void *priv, struct v4l2_requestbuffers *rb) | |
1031 | { | |
1032 | struct stk_camera *dev = priv; | |
1033 | ||
1034 | if (dev == NULL) | |
1035 | return -ENODEV; | |
ec16dae5 JVJ |
1036 | if (rb->memory != V4L2_MEMORY_MMAP) |
1037 | return -EINVAL; | |
1038 | if (is_streaming(dev) | |
1039 | || (dev->owner && dev->owner != filp)) | |
1040 | return -EBUSY; | |
1041 | dev->owner = filp; | |
1042 | ||
1043 | /*FIXME If they ask for zero, we must stop streaming and free */ | |
1044 | if (rb->count < 3) | |
1045 | rb->count = 3; | |
1046 | /* Arbitrary limit */ | |
1047 | else if (rb->count > 5) | |
1048 | rb->count = 5; | |
1049 | ||
1050 | stk_allocate_buffers(dev, rb->count); | |
1051 | rb->count = dev->n_sbufs; | |
1052 | return 0; | |
1053 | } | |
1054 | ||
1055 | static int stk_vidioc_querybuf(struct file *filp, | |
1056 | void *priv, struct v4l2_buffer *buf) | |
1057 | { | |
ec16dae5 JVJ |
1058 | struct stk_camera *dev = priv; |
1059 | struct stk_sio_buffer *sbuf; | |
1060 | ||
223ffe5f | 1061 | if (buf->index >= dev->n_sbufs) |
ec16dae5 JVJ |
1062 | return -EINVAL; |
1063 | sbuf = dev->sio_bufs + buf->index; | |
1064 | *buf = sbuf->v4lbuf; | |
1065 | return 0; | |
1066 | } | |
1067 | ||
1068 | static int stk_vidioc_qbuf(struct file *filp, | |
1069 | void *priv, struct v4l2_buffer *buf) | |
1070 | { | |
1071 | struct stk_camera *dev = priv; | |
1072 | struct stk_sio_buffer *sbuf; | |
1073 | unsigned long flags; | |
ec16dae5 JVJ |
1074 | |
1075 | if (buf->memory != V4L2_MEMORY_MMAP) | |
1076 | return -EINVAL; | |
1077 | ||
223ffe5f | 1078 | if (buf->index >= dev->n_sbufs) |
ec16dae5 JVJ |
1079 | return -EINVAL; |
1080 | sbuf = dev->sio_bufs + buf->index; | |
1081 | if (sbuf->v4lbuf.flags & V4L2_BUF_FLAG_QUEUED) | |
1082 | return 0; | |
1083 | sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_QUEUED; | |
1084 | sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_DONE; | |
1085 | spin_lock_irqsave(&dev->spinlock, flags); | |
1086 | list_add_tail(&sbuf->list, &dev->sio_avail); | |
1087 | *buf = sbuf->v4lbuf; | |
1088 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1089 | return 0; | |
1090 | } | |
1091 | ||
1092 | static int stk_vidioc_dqbuf(struct file *filp, | |
1093 | void *priv, struct v4l2_buffer *buf) | |
1094 | { | |
1095 | struct stk_camera *dev = priv; | |
1096 | struct stk_sio_buffer *sbuf; | |
1097 | unsigned long flags; | |
1098 | int ret; | |
1099 | ||
2509e1cb | 1100 | if (!is_streaming(dev)) |
ec16dae5 JVJ |
1101 | return -EINVAL; |
1102 | ||
1103 | if (filp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full)) | |
1104 | return -EWOULDBLOCK; | |
1105 | ret = wait_event_interruptible(dev->wait_frame, | |
1106 | !list_empty(&dev->sio_full) || !is_present(dev)); | |
1107 | if (ret) | |
1108 | return ret; | |
1109 | if (!is_present(dev)) | |
1110 | return -EIO; | |
1111 | ||
1112 | spin_lock_irqsave(&dev->spinlock, flags); | |
1113 | sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list); | |
1114 | list_del_init(&sbuf->list); | |
1115 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1116 | sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_QUEUED; | |
1117 | sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_DONE; | |
1118 | sbuf->v4lbuf.sequence = ++dev->sequence; | |
1119 | do_gettimeofday(&sbuf->v4lbuf.timestamp); | |
1120 | ||
1121 | *buf = sbuf->v4lbuf; | |
1122 | return 0; | |
1123 | } | |
1124 | ||
1125 | static int stk_vidioc_streamon(struct file *filp, | |
1126 | void *priv, enum v4l2_buf_type type) | |
1127 | { | |
1128 | struct stk_camera *dev = priv; | |
1129 | if (is_streaming(dev)) | |
1130 | return 0; | |
1131 | if (dev->sio_bufs == NULL) | |
1132 | return -EINVAL; | |
1133 | dev->sequence = 0; | |
1134 | return stk_start_stream(dev); | |
1135 | } | |
1136 | ||
1137 | static int stk_vidioc_streamoff(struct file *filp, | |
1138 | void *priv, enum v4l2_buf_type type) | |
1139 | { | |
1140 | struct stk_camera *dev = priv; | |
1141 | unsigned long flags; | |
1142 | int i; | |
1143 | stk_stop_stream(dev); | |
1144 | spin_lock_irqsave(&dev->spinlock, flags); | |
1145 | INIT_LIST_HEAD(&dev->sio_avail); | |
1146 | INIT_LIST_HEAD(&dev->sio_full); | |
1147 | for (i = 0; i < dev->n_sbufs; i++) { | |
1148 | INIT_LIST_HEAD(&dev->sio_bufs[i].list); | |
1149 | dev->sio_bufs[i].v4lbuf.flags = 0; | |
1150 | } | |
1151 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1152 | return 0; | |
1153 | } | |
1154 | ||
1155 | ||
1156 | static int stk_vidioc_g_parm(struct file *filp, | |
1157 | void *priv, struct v4l2_streamparm *sp) | |
1158 | { | |
ec16dae5 JVJ |
1159 | /*FIXME This is not correct */ |
1160 | sp->parm.capture.timeperframe.numerator = 1; | |
1161 | sp->parm.capture.timeperframe.denominator = 30; | |
1162 | sp->parm.capture.readbuffers = 2; | |
ec16dae5 JVJ |
1163 | return 0; |
1164 | } | |
1165 | ||
126be90f JVJ |
1166 | static int stk_vidioc_enum_framesizes(struct file *filp, |
1167 | void *priv, struct v4l2_frmsizeenum *frms) | |
1168 | { | |
1169 | if (frms->index >= ARRAY_SIZE(stk_sizes)) | |
1170 | return -EINVAL; | |
1171 | switch (frms->pixel_format) { | |
1172 | case V4L2_PIX_FMT_RGB565: | |
1173 | case V4L2_PIX_FMT_RGB565X: | |
1174 | case V4L2_PIX_FMT_UYVY: | |
1175 | case V4L2_PIX_FMT_YUYV: | |
1176 | case V4L2_PIX_FMT_SBGGR8: | |
1177 | frms->type = V4L2_FRMSIZE_TYPE_DISCRETE; | |
1178 | frms->discrete.width = stk_sizes[frms->index].w; | |
1179 | frms->discrete.height = stk_sizes[frms->index].h; | |
1180 | return 0; | |
1181 | default: return -EINVAL; | |
1182 | } | |
1183 | } | |
1184 | ||
bec43661 | 1185 | static struct v4l2_file_operations v4l_stk_fops = { |
ec16dae5 JVJ |
1186 | .owner = THIS_MODULE, |
1187 | .open = v4l_stk_open, | |
1188 | .release = v4l_stk_release, | |
1189 | .read = v4l_stk_read, | |
1190 | .poll = v4l_stk_poll, | |
1191 | .mmap = v4l_stk_mmap, | |
1192 | .ioctl = video_ioctl2, | |
ec16dae5 JVJ |
1193 | }; |
1194 | ||
a399810c | 1195 | static const struct v4l2_ioctl_ops v4l_stk_ioctl_ops = { |
ec16dae5 | 1196 | .vidioc_querycap = stk_vidioc_querycap, |
78b526a4 HV |
1197 | .vidioc_enum_fmt_vid_cap = stk_vidioc_enum_fmt_vid_cap, |
1198 | .vidioc_try_fmt_vid_cap = stk_vidioc_try_fmt_vid_cap, | |
1199 | .vidioc_s_fmt_vid_cap = stk_vidioc_s_fmt_vid_cap, | |
1200 | .vidioc_g_fmt_vid_cap = stk_vidioc_g_fmt_vid_cap, | |
ec16dae5 JVJ |
1201 | .vidioc_enum_input = stk_vidioc_enum_input, |
1202 | .vidioc_s_input = stk_vidioc_s_input, | |
1203 | .vidioc_g_input = stk_vidioc_g_input, | |
1204 | .vidioc_s_std = stk_vidioc_s_std, | |
1205 | .vidioc_reqbufs = stk_vidioc_reqbufs, | |
1206 | .vidioc_querybuf = stk_vidioc_querybuf, | |
1207 | .vidioc_qbuf = stk_vidioc_qbuf, | |
1208 | .vidioc_dqbuf = stk_vidioc_dqbuf, | |
1209 | .vidioc_streamon = stk_vidioc_streamon, | |
1210 | .vidioc_streamoff = stk_vidioc_streamoff, | |
1211 | .vidioc_queryctrl = stk_vidioc_queryctrl, | |
1212 | .vidioc_g_ctrl = stk_vidioc_g_ctrl, | |
1213 | .vidioc_s_ctrl = stk_vidioc_s_ctrl, | |
1214 | .vidioc_g_parm = stk_vidioc_g_parm, | |
126be90f | 1215 | .vidioc_enum_framesizes = stk_vidioc_enum_framesizes, |
ec16dae5 JVJ |
1216 | }; |
1217 | ||
a399810c HV |
1218 | static void stk_v4l_dev_release(struct video_device *vd) |
1219 | { | |
4aaec3ea DE |
1220 | struct stk_camera *dev = vdev_to_camera(vd); |
1221 | ||
1222 | if (dev->sio_bufs != NULL || dev->isobufs != NULL) | |
1223 | STK_ERROR("We are leaking memory\n"); | |
1224 | usb_put_intf(dev->interface); | |
1225 | kfree(dev); | |
a399810c HV |
1226 | } |
1227 | ||
1228 | static struct video_device stk_v4l_data = { | |
1229 | .name = "stkwebcam", | |
a399810c HV |
1230 | .tvnorms = V4L2_STD_UNKNOWN, |
1231 | .current_norm = V4L2_STD_UNKNOWN, | |
1232 | .fops = &v4l_stk_fops, | |
1233 | .ioctl_ops = &v4l_stk_ioctl_ops, | |
1234 | .release = stk_v4l_dev_release, | |
1235 | }; | |
1236 | ||
ec16dae5 JVJ |
1237 | |
1238 | static int stk_register_video_device(struct stk_camera *dev) | |
1239 | { | |
1240 | int err; | |
1241 | ||
1242 | dev->vdev = stk_v4l_data; | |
1243 | dev->vdev.debug = debug; | |
5e85e732 | 1244 | dev->vdev.parent = &dev->interface->dev; |
ec16dae5 JVJ |
1245 | err = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1); |
1246 | if (err) | |
1247 | STK_ERROR("v4l registration failed\n"); | |
1248 | else | |
38c7c036 LP |
1249 | STK_INFO("Syntek USB2.0 Camera is now controlling device %s\n", |
1250 | video_device_node_name(&dev->vdev)); | |
ec16dae5 JVJ |
1251 | return err; |
1252 | } | |
1253 | ||
1254 | ||
1255 | /* USB Stuff */ | |
1256 | ||
1257 | static int stk_camera_probe(struct usb_interface *interface, | |
1258 | const struct usb_device_id *id) | |
1259 | { | |
1260 | int i; | |
4aaec3ea | 1261 | int err = 0; |
ec16dae5 JVJ |
1262 | |
1263 | struct stk_camera *dev = NULL; | |
1264 | struct usb_device *udev = interface_to_usbdev(interface); | |
1265 | struct usb_host_interface *iface_desc; | |
1266 | struct usb_endpoint_descriptor *endpoint; | |
1267 | ||
1268 | dev = kzalloc(sizeof(struct stk_camera), GFP_KERNEL); | |
1269 | if (dev == NULL) { | |
1270 | STK_ERROR("Out of memory !\n"); | |
1271 | return -ENOMEM; | |
1272 | } | |
1273 | ||
ec16dae5 JVJ |
1274 | spin_lock_init(&dev->spinlock); |
1275 | init_waitqueue_head(&dev->wait_frame); | |
1276 | ||
1277 | dev->udev = udev; | |
1278 | dev->interface = interface; | |
1279 | usb_get_intf(interface); | |
1280 | ||
1281 | dev->vsettings.vflip = vflip; | |
1282 | dev->vsettings.hflip = hflip; | |
1283 | dev->n_sbufs = 0; | |
1284 | set_present(dev); | |
1285 | ||
1286 | /* Set up the endpoint information | |
1287 | * use only the first isoc-in endpoint | |
1288 | * for the current alternate setting */ | |
1289 | iface_desc = interface->cur_altsetting; | |
1290 | ||
1291 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
1292 | endpoint = &iface_desc->endpoint[i].desc; | |
1293 | ||
1294 | if (!dev->isoc_ep | |
13417982 | 1295 | && usb_endpoint_is_isoc_in(endpoint)) { |
ec16dae5 | 1296 | /* we found an isoc in endpoint */ |
13417982 | 1297 | dev->isoc_ep = usb_endpoint_num(endpoint); |
ec16dae5 JVJ |
1298 | break; |
1299 | } | |
1300 | } | |
1301 | if (!dev->isoc_ep) { | |
1302 | STK_ERROR("Could not find isoc-in endpoint"); | |
4aaec3ea DE |
1303 | err = -ENODEV; |
1304 | goto error; | |
ec16dae5 JVJ |
1305 | } |
1306 | dev->vsettings.brightness = 0x7fff; | |
1307 | dev->vsettings.palette = V4L2_PIX_FMT_RGB565; | |
1308 | dev->vsettings.mode = MODE_VGA; | |
1112fb68 | 1309 | dev->frame_size = 640 * 480 * 2; |
ec16dae5 JVJ |
1310 | |
1311 | INIT_LIST_HEAD(&dev->sio_avail); | |
1312 | INIT_LIST_HEAD(&dev->sio_full); | |
1313 | ||
1314 | usb_set_intfdata(interface, dev); | |
1315 | ||
1316 | err = stk_register_video_device(dev); | |
b57ce417 | 1317 | if (err) |
4aaec3ea | 1318 | goto error; |
ec16dae5 | 1319 | |
ec16dae5 | 1320 | return 0; |
4aaec3ea DE |
1321 | |
1322 | error: | |
1323 | kfree(dev); | |
1324 | return err; | |
ec16dae5 JVJ |
1325 | } |
1326 | ||
1327 | static void stk_camera_disconnect(struct usb_interface *interface) | |
1328 | { | |
1329 | struct stk_camera *dev = usb_get_intfdata(interface); | |
1330 | ||
1331 | usb_set_intfdata(interface, NULL); | |
1332 | unset_present(dev); | |
1333 | ||
1334 | wake_up_interruptible(&dev->wait_frame); | |
ec16dae5 | 1335 | |
38c7c036 LP |
1336 | STK_INFO("Syntek USB2.0 Camera release resources device %s\n", |
1337 | video_device_node_name(&dev->vdev)); | |
4aaec3ea DE |
1338 | |
1339 | video_unregister_device(&dev->vdev); | |
ec16dae5 JVJ |
1340 | } |
1341 | ||
1fdd61c0 | 1342 | #ifdef CONFIG_PM |
4d34dccd | 1343 | static int stk_camera_suspend(struct usb_interface *intf, pm_message_t message) |
1fdd61c0 JVJ |
1344 | { |
1345 | struct stk_camera *dev = usb_get_intfdata(intf); | |
1346 | if (is_streaming(dev)) { | |
1347 | stk_stop_stream(dev); | |
1348 | /* yes, this is ugly */ | |
1349 | set_streaming(dev); | |
1350 | } | |
1351 | return 0; | |
1352 | } | |
1353 | ||
4d34dccd | 1354 | static int stk_camera_resume(struct usb_interface *intf) |
1fdd61c0 JVJ |
1355 | { |
1356 | struct stk_camera *dev = usb_get_intfdata(intf); | |
1357 | if (!is_initialised(dev)) | |
1358 | return 0; | |
1359 | unset_initialised(dev); | |
1360 | stk_initialise(dev); | |
7b1c8f58 | 1361 | stk_camera_write_reg(dev, 0x0, 0x49); |
1fdd61c0 JVJ |
1362 | stk_setup_format(dev); |
1363 | if (is_streaming(dev)) | |
1364 | stk_start_stream(dev); | |
1365 | return 0; | |
1366 | } | |
1367 | #endif | |
1368 | ||
ec16dae5 JVJ |
1369 | static struct usb_driver stk_camera_driver = { |
1370 | .name = "stkwebcam", | |
1371 | .probe = stk_camera_probe, | |
1372 | .disconnect = stk_camera_disconnect, | |
1373 | .id_table = stkwebcam_table, | |
1fdd61c0 JVJ |
1374 | #ifdef CONFIG_PM |
1375 | .suspend = stk_camera_suspend, | |
1376 | .resume = stk_camera_resume, | |
1377 | #endif | |
ec16dae5 JVJ |
1378 | }; |
1379 | ||
ecb3b2b3 | 1380 | module_usb_driver(stk_camera_driver); |