Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Endpoints (formerly known as AOX) se401 USB Camera Driver | |
3 | * | |
4 | * Copyright (c) 2000 Jeroen B. Vreeken (pe1rxq@amsat.org) | |
5 | * | |
6 | * Still somewhat based on the Linux ov511 driver. | |
d56410e0 | 7 | * |
1da177e4 LT |
8 | * This program is free software; you can redistribute it and/or modify it |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
15 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | * for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software Foundation, | |
20 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | * | |
22 | * | |
23 | * Thanks to Endpoints Inc. (www.endpoints.com) for making documentation on | |
24 | * their chipset available and supporting me while writing this driver. | |
25 | * - Jeroen Vreeken | |
26 | */ | |
27 | ||
28 | static const char version[] = "0.24"; | |
29 | ||
1da177e4 LT |
30 | #include <linux/module.h> |
31 | #include <linux/init.h> | |
32 | #include <linux/vmalloc.h> | |
33 | #include <linux/slab.h> | |
34 | #include <linux/pagemap.h> | |
35 | #include <linux/usb.h> | |
36 | #include "se401.h" | |
37 | ||
ff699e6b | 38 | static int flickerless; |
1da177e4 LT |
39 | static int video_nr = -1; |
40 | ||
41 | static struct usb_device_id device_table [] = { | |
42 | { USB_DEVICE(0x03e8, 0x0004) },/* Endpoints/Aox SE401 */ | |
43 | { USB_DEVICE(0x0471, 0x030b) },/* Philips PCVC665K */ | |
44 | { USB_DEVICE(0x047d, 0x5001) },/* Kensington 67014 */ | |
45 | { USB_DEVICE(0x047d, 0x5002) },/* Kensington 6701(5/7) */ | |
46 | { USB_DEVICE(0x047d, 0x5003) },/* Kensington 67016 */ | |
47 | { } | |
48 | }; | |
49 | ||
50 | MODULE_DEVICE_TABLE(usb, device_table); | |
51 | ||
52 | MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>"); | |
53 | MODULE_DESCRIPTION("SE401 USB Camera Driver"); | |
54 | MODULE_LICENSE("GPL"); | |
55 | module_param(flickerless, int, 0); | |
56 | MODULE_PARM_DESC(flickerless, "Net frequency to adjust exposure time to (0/50/60)"); | |
57 | module_param(video_nr, int, 0); | |
58 | ||
59 | static struct usb_driver se401_driver; | |
60 | ||
61 | ||
62 | /********************************************************************** | |
63 | * | |
64 | * Memory management | |
65 | * | |
66 | **********************************************************************/ | |
67 | static void *rvmalloc(unsigned long size) | |
68 | { | |
69 | void *mem; | |
70 | unsigned long adr; | |
71 | ||
72 | size = PAGE_ALIGN(size); | |
73 | mem = vmalloc_32(size); | |
74 | if (!mem) | |
75 | return NULL; | |
76 | ||
77 | memset(mem, 0, size); /* Clear the ram out, no junk to the user */ | |
78 | adr = (unsigned long) mem; | |
79 | while (size > 0) { | |
80 | SetPageReserved(vmalloc_to_page((void *)adr)); | |
81 | adr += PAGE_SIZE; | |
82 | size -= PAGE_SIZE; | |
83 | } | |
84 | ||
85 | return mem; | |
86 | } | |
87 | ||
88 | static void rvfree(void *mem, unsigned long size) | |
89 | { | |
90 | unsigned long adr; | |
91 | ||
92 | if (!mem) | |
93 | return; | |
94 | ||
95 | adr = (unsigned long) mem; | |
96 | while ((long) size > 0) { | |
97 | ClearPageReserved(vmalloc_to_page((void *)adr)); | |
98 | adr += PAGE_SIZE; | |
99 | size -= PAGE_SIZE; | |
100 | } | |
101 | vfree(mem); | |
102 | } | |
103 | ||
104 | ||
105 | ||
106 | /**************************************************************************** | |
107 | * | |
108 | * se401 register read/write functions | |
109 | * | |
110 | ***************************************************************************/ | |
111 | ||
112 | static int se401_sndctrl(int set, struct usb_se401 *se401, unsigned short req, | |
113 | unsigned short value, unsigned char *cp, int size) | |
114 | { | |
115 | return usb_control_msg ( | |
d56410e0 MCC |
116 | se401->dev, |
117 | set ? usb_sndctrlpipe(se401->dev, 0) : usb_rcvctrlpipe(se401->dev, 0), | |
118 | req, | |
119 | (set ? USB_DIR_OUT : USB_DIR_IN) | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
120 | value, | |
121 | 0, | |
122 | cp, | |
123 | size, | |
124 | 1000 | |
125 | ); | |
1da177e4 LT |
126 | } |
127 | ||
128 | static int se401_set_feature(struct usb_se401 *se401, unsigned short selector, | |
129 | unsigned short param) | |
130 | { | |
131 | /* specs say that the selector (address) should go in the value field | |
132 | and the param in index, but in the logs of the windows driver they do | |
133 | this the other way around... | |
134 | */ | |
135 | return usb_control_msg ( | |
136 | se401->dev, | |
137 | usb_sndctrlpipe(se401->dev, 0), | |
138 | SE401_REQ_SET_EXT_FEATURE, | |
139 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
140 | param, | |
141 | selector, | |
d56410e0 MCC |
142 | NULL, |
143 | 0, | |
144 | 1000 | |
145 | ); | |
1da177e4 LT |
146 | } |
147 | ||
d56410e0 MCC |
148 | static unsigned short se401_get_feature(struct usb_se401 *se401, |
149 | unsigned short selector) | |
1da177e4 LT |
150 | { |
151 | /* For 'set' the selecetor should be in index, not sure if the spec is | |
152 | wrong here to.... | |
153 | */ | |
154 | unsigned char cp[2]; | |
d56410e0 MCC |
155 | usb_control_msg ( |
156 | se401->dev, | |
157 | usb_rcvctrlpipe(se401->dev, 0), | |
158 | SE401_REQ_GET_EXT_FEATURE, | |
159 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
160 | 0, | |
161 | selector, | |
162 | cp, | |
163 | 2, | |
164 | 1000 | |
165 | ); | |
1da177e4 LT |
166 | return cp[0]+cp[1]*256; |
167 | } | |
168 | ||
169 | /**************************************************************************** | |
170 | * | |
171 | * Camera control | |
172 | * | |
173 | ***************************************************************************/ | |
174 | ||
175 | ||
176 | static int se401_send_pict(struct usb_se401 *se401) | |
177 | { | |
178 | se401_set_feature(se401, HV7131_REG_TITL, se401->expose_l);/* integration time low */ | |
179 | se401_set_feature(se401, HV7131_REG_TITM, se401->expose_m);/* integration time mid */ | |
180 | se401_set_feature(se401, HV7131_REG_TITU, se401->expose_h);/* integration time mid */ | |
181 | se401_set_feature(se401, HV7131_REG_ARLV, se401->resetlevel);/* reset level value */ | |
182 | se401_set_feature(se401, HV7131_REG_ARCG, se401->rgain);/* red color gain */ | |
183 | se401_set_feature(se401, HV7131_REG_AGCG, se401->ggain);/* green color gain */ | |
184 | se401_set_feature(se401, HV7131_REG_ABCG, se401->bgain);/* blue color gain */ | |
d56410e0 | 185 | |
1da177e4 LT |
186 | return 0; |
187 | } | |
188 | ||
189 | static void se401_set_exposure(struct usb_se401 *se401, int brightness) | |
190 | { | |
191 | int integration=brightness<<5; | |
d56410e0 | 192 | |
1da177e4 LT |
193 | if (flickerless==50) { |
194 | integration=integration-integration%106667; | |
195 | } | |
196 | if (flickerless==60) { | |
197 | integration=integration-integration%88889; | |
198 | } | |
199 | se401->brightness=integration>>5; | |
200 | se401->expose_h=(integration>>16)&0xff; | |
201 | se401->expose_m=(integration>>8)&0xff; | |
202 | se401->expose_l=integration&0xff; | |
203 | } | |
204 | ||
205 | static int se401_get_pict(struct usb_se401 *se401, struct video_picture *p) | |
206 | { | |
207 | p->brightness=se401->brightness; | |
208 | if (se401->enhance) { | |
209 | p->whiteness=32768; | |
210 | } else { | |
211 | p->whiteness=0; | |
212 | } | |
213 | p->colour=65535; | |
214 | p->contrast=65535; | |
215 | p->hue=se401->rgain<<10; | |
216 | p->palette=se401->palette; | |
217 | p->depth=3; /* rgb24 */ | |
218 | return 0; | |
219 | } | |
220 | ||
221 | ||
222 | static int se401_set_pict(struct usb_se401 *se401, struct video_picture *p) | |
223 | { | |
224 | if (p->palette != VIDEO_PALETTE_RGB24) | |
225 | return 1; | |
226 | se401->palette=p->palette; | |
227 | if (p->hue!=se401->hue) { | |
228 | se401->rgain= p->hue>>10; | |
229 | se401->bgain= 0x40-(p->hue>>10); | |
230 | se401->hue=p->hue; | |
231 | } | |
232 | if (p->brightness!=se401->brightness) { | |
233 | se401_set_exposure(se401, p->brightness); | |
234 | } | |
235 | if (p->whiteness>=32768) { | |
236 | se401->enhance=1; | |
237 | } else { | |
238 | se401->enhance=0; | |
239 | } | |
240 | se401_send_pict(se401); | |
241 | se401_send_pict(se401); | |
242 | return 0; | |
243 | } | |
244 | ||
245 | /* | |
246 | Hyundai have some really nice docs about this and other sensor related | |
247 | stuff on their homepage: www.hei.co.kr | |
248 | */ | |
249 | static void se401_auto_resetlevel(struct usb_se401 *se401) | |
250 | { | |
251 | unsigned int ahrc, alrc; | |
252 | int oldreset=se401->resetlevel; | |
253 | ||
254 | /* For some reason this normally read-only register doesn't get reset | |
255 | to zero after reading them just once... | |
256 | */ | |
d56410e0 | 257 | se401_get_feature(se401, HV7131_REG_HIREFNOH); |
1da177e4 LT |
258 | se401_get_feature(se401, HV7131_REG_HIREFNOL); |
259 | se401_get_feature(se401, HV7131_REG_LOREFNOH); | |
260 | se401_get_feature(se401, HV7131_REG_LOREFNOL); | |
d56410e0 | 261 | ahrc=256*se401_get_feature(se401, HV7131_REG_HIREFNOH) + |
1da177e4 LT |
262 | se401_get_feature(se401, HV7131_REG_HIREFNOL); |
263 | alrc=256*se401_get_feature(se401, HV7131_REG_LOREFNOH) + | |
264 | se401_get_feature(se401, HV7131_REG_LOREFNOL); | |
265 | ||
266 | /* Not an exact science, but it seems to work pretty well... */ | |
267 | if (alrc > 10) { | |
268 | while (alrc>=10 && se401->resetlevel < 63) { | |
269 | se401->resetlevel++; | |
270 | alrc /=2; | |
271 | } | |
272 | } else if (ahrc > 20) { | |
273 | while (ahrc>=20 && se401->resetlevel > 0) { | |
274 | se401->resetlevel--; | |
275 | ahrc /=2; | |
276 | } | |
277 | } | |
278 | if (se401->resetlevel!=oldreset) | |
279 | se401_set_feature(se401, HV7131_REG_ARLV, se401->resetlevel); | |
280 | ||
281 | return; | |
282 | } | |
283 | ||
284 | /* irq handler for snapshot button */ | |
7d12e780 | 285 | static void se401_button_irq(struct urb *urb) |
1da177e4 LT |
286 | { |
287 | struct usb_se401 *se401 = urb->context; | |
288 | int status; | |
d56410e0 | 289 | |
1da177e4 | 290 | if (!se401->dev) { |
a482f327 | 291 | dev_info(&urb->dev->dev, "device vapourished\n"); |
1da177e4 LT |
292 | return; |
293 | } | |
d56410e0 | 294 | |
1da177e4 LT |
295 | switch (urb->status) { |
296 | case 0: | |
297 | /* success */ | |
298 | break; | |
299 | case -ECONNRESET: | |
300 | case -ENOENT: | |
301 | case -ESHUTDOWN: | |
302 | /* this urb is terminated, clean up */ | |
7e28adb2 | 303 | dbg("%s - urb shutting down with status: %d", __func__, urb->status); |
1da177e4 LT |
304 | return; |
305 | default: | |
7e28adb2 | 306 | dbg("%s - nonzero urb status received: %d", __func__, urb->status); |
1da177e4 LT |
307 | goto exit; |
308 | } | |
309 | ||
310 | if (urb->actual_length >=2) { | |
311 | if (se401->button) | |
312 | se401->buttonpressed=1; | |
313 | } | |
314 | exit: | |
315 | status = usb_submit_urb (urb, GFP_ATOMIC); | |
316 | if (status) | |
317 | err ("%s - usb_submit_urb failed with result %d", | |
7e28adb2 | 318 | __func__, status); |
1da177e4 LT |
319 | } |
320 | ||
7d12e780 | 321 | static void se401_video_irq(struct urb *urb) |
1da177e4 LT |
322 | { |
323 | struct usb_se401 *se401 = urb->context; | |
324 | int length = urb->actual_length; | |
325 | ||
326 | /* ohoh... */ | |
327 | if (!se401->streaming) | |
328 | return; | |
329 | ||
330 | if (!se401->dev) { | |
a482f327 | 331 | dev_info(&urb->dev->dev, "device vapourished\n"); |
1da177e4 LT |
332 | return; |
333 | } | |
334 | ||
335 | /* 0 sized packets happen if we are to fast, but sometimes the camera | |
336 | keeps sending them forever... | |
337 | */ | |
338 | if (length && !urb->status) { | |
339 | se401->nullpackets=0; | |
340 | switch(se401->scratch[se401->scratch_next].state) { | |
341 | case BUFFER_READY: | |
342 | case BUFFER_BUSY: { | |
343 | se401->dropped++; | |
344 | break; | |
345 | } | |
346 | case BUFFER_UNUSED: { | |
347 | memcpy(se401->scratch[se401->scratch_next].data, (unsigned char *)urb->transfer_buffer, length); | |
348 | se401->scratch[se401->scratch_next].state=BUFFER_READY; | |
349 | se401->scratch[se401->scratch_next].offset=se401->bayeroffset; | |
350 | se401->scratch[se401->scratch_next].length=length; | |
351 | if (waitqueue_active(&se401->wq)) { | |
352 | wake_up_interruptible(&se401->wq); | |
353 | } | |
354 | se401->scratch_overflow=0; | |
355 | se401->scratch_next++; | |
356 | if (se401->scratch_next>=SE401_NUMSCRATCH) | |
357 | se401->scratch_next=0; | |
358 | break; | |
359 | } | |
360 | } | |
361 | se401->bayeroffset+=length; | |
362 | if (se401->bayeroffset>=se401->cheight*se401->cwidth) { | |
363 | se401->bayeroffset=0; | |
364 | } | |
365 | } else { | |
366 | se401->nullpackets++; | |
367 | if (se401->nullpackets > SE401_MAX_NULLPACKETS) { | |
368 | if (waitqueue_active(&se401->wq)) { | |
369 | wake_up_interruptible(&se401->wq); | |
d56410e0 | 370 | } |
1da177e4 LT |
371 | } |
372 | } | |
373 | ||
374 | /* Resubmit urb for new data */ | |
375 | urb->status=0; | |
376 | urb->dev=se401->dev; | |
377 | if(usb_submit_urb(urb, GFP_KERNEL)) | |
a482f327 | 378 | dev_info(&urb->dev->dev, "urb burned down\n"); |
1da177e4 LT |
379 | return; |
380 | } | |
381 | ||
382 | static void se401_send_size(struct usb_se401 *se401, int width, int height) | |
383 | { | |
384 | int i=0; | |
385 | int mode=0x03; /* No compression */ | |
386 | int sendheight=height; | |
387 | int sendwidth=width; | |
388 | ||
389 | /* JangGu compression can only be used with the camera supported sizes, | |
390 | but bayer seems to work with any size that fits on the sensor. | |
391 | We check if we can use compression with the current size with either | |
392 | 4 or 16 times subcapturing, if not we use uncompressed bayer data | |
393 | but this will result in cutouts of the maximum size.... | |
394 | */ | |
395 | while (i<se401->sizes && !(se401->width[i]==width && se401->height[i]==height)) | |
396 | i++; | |
397 | while (i<se401->sizes) { | |
398 | if (se401->width[i]==width*2 && se401->height[i]==height*2) { | |
399 | sendheight=se401->height[i]; | |
400 | sendwidth=se401->width[i]; | |
401 | mode=0x40; | |
402 | } | |
403 | if (se401->width[i]==width*4 && se401->height[i]==height*4) { | |
404 | sendheight=se401->height[i]; | |
405 | sendwidth=se401->width[i]; | |
406 | mode=0x42; | |
407 | } | |
408 | i++; | |
409 | } | |
410 | ||
411 | se401_sndctrl(1, se401, SE401_REQ_SET_WIDTH, sendwidth, NULL, 0); | |
412 | se401_sndctrl(1, se401, SE401_REQ_SET_HEIGHT, sendheight, NULL, 0); | |
413 | se401_set_feature(se401, SE401_OPERATINGMODE, mode); | |
414 | ||
415 | if (mode==0x03) { | |
416 | se401->format=FMT_BAYER; | |
417 | } else { | |
418 | se401->format=FMT_JANGGU; | |
419 | } | |
420 | ||
421 | return; | |
422 | } | |
423 | ||
424 | /* | |
425 | In this function se401_send_pict is called several times, | |
426 | for some reason (depending on the state of the sensor and the phase of | |
427 | the moon :) doing this only in either place doesn't always work... | |
428 | */ | |
429 | static int se401_start_stream(struct usb_se401 *se401) | |
430 | { | |
431 | struct urb *urb; | |
432 | int err=0, i; | |
433 | se401->streaming=1; | |
434 | ||
d56410e0 MCC |
435 | se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 1, NULL, 0); |
436 | se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 1, NULL, 0); | |
1da177e4 LT |
437 | |
438 | /* Set picture settings */ | |
439 | se401_set_feature(se401, HV7131_REG_MODE_B, 0x05);/*windowed + pix intg */ | |
440 | se401_send_pict(se401); | |
441 | ||
442 | se401_send_size(se401, se401->cwidth, se401->cheight); | |
443 | ||
444 | se401_sndctrl(1, se401, SE401_REQ_START_CONTINUOUS_CAPTURE, 0, NULL, 0); | |
445 | ||
446 | /* Do some memory allocation */ | |
447 | for (i=0; i<SE401_NUMFRAMES; i++) { | |
448 | se401->frame[i].data=se401->fbuf + i * se401->maxframesize; | |
449 | se401->frame[i].curpix=0; | |
450 | } | |
451 | for (i=0; i<SE401_NUMSBUF; i++) { | |
452 | se401->sbuf[i].data=kmalloc(SE401_PACKETSIZE, GFP_KERNEL); | |
fd51c697 AC |
453 | if (!se401->sbuf[i].data) { |
454 | for(i = i - 1; i >= 0; i--) { | |
455 | kfree(se401->sbuf[i].data); | |
456 | se401->sbuf[i].data = NULL; | |
457 | } | |
458 | return -ENOMEM; | |
459 | } | |
1da177e4 LT |
460 | } |
461 | ||
462 | se401->bayeroffset=0; | |
463 | se401->scratch_next=0; | |
464 | se401->scratch_use=0; | |
465 | se401->scratch_overflow=0; | |
466 | for (i=0; i<SE401_NUMSCRATCH; i++) { | |
467 | se401->scratch[i].data=kmalloc(SE401_PACKETSIZE, GFP_KERNEL); | |
fd51c697 AC |
468 | if (!se401->scratch[i].data) { |
469 | for(i = i - 1; i >= 0; i--) { | |
470 | kfree(se401->scratch[i].data); | |
471 | se401->scratch[i].data = NULL; | |
472 | } | |
473 | goto nomem_sbuf; | |
474 | } | |
1da177e4 LT |
475 | se401->scratch[i].state=BUFFER_UNUSED; |
476 | } | |
477 | ||
478 | for (i=0; i<SE401_NUMSBUF; i++) { | |
479 | urb=usb_alloc_urb(0, GFP_KERNEL); | |
fd51c697 AC |
480 | if(!urb) { |
481 | for(i = i - 1; i >= 0; i--) { | |
482 | usb_kill_urb(se401->urb[i]); | |
483 | usb_free_urb(se401->urb[i]); | |
484 | se401->urb[i] = NULL; | |
485 | } | |
486 | goto nomem_scratch; | |
487 | } | |
1da177e4 LT |
488 | |
489 | usb_fill_bulk_urb(urb, se401->dev, | |
490 | usb_rcvbulkpipe(se401->dev, SE401_VIDEO_ENDPOINT), | |
491 | se401->sbuf[i].data, SE401_PACKETSIZE, | |
492 | se401_video_irq, | |
493 | se401); | |
494 | ||
495 | se401->urb[i]=urb; | |
496 | ||
497 | err=usb_submit_urb(se401->urb[i], GFP_KERNEL); | |
498 | if(err) | |
499 | err("urb burned down"); | |
500 | } | |
501 | ||
502 | se401->framecount=0; | |
503 | ||
504 | return 0; | |
fd51c697 AC |
505 | |
506 | nomem_scratch: | |
507 | for (i=0; i<SE401_NUMSCRATCH; i++) { | |
508 | kfree(se401->scratch[i].data); | |
509 | se401->scratch[i].data = NULL; | |
510 | } | |
511 | nomem_sbuf: | |
512 | for (i=0; i<SE401_NUMSBUF; i++) { | |
513 | kfree(se401->sbuf[i].data); | |
514 | se401->sbuf[i].data = NULL; | |
515 | } | |
516 | return -ENOMEM; | |
1da177e4 LT |
517 | } |
518 | ||
519 | static int se401_stop_stream(struct usb_se401 *se401) | |
520 | { | |
521 | int i; | |
522 | ||
523 | if (!se401->streaming || !se401->dev) | |
524 | return 1; | |
525 | ||
526 | se401->streaming=0; | |
527 | ||
528 | se401_sndctrl(1, se401, SE401_REQ_STOP_CONTINUOUS_CAPTURE, 0, NULL, 0); | |
529 | ||
530 | se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 0, NULL, 0); | |
531 | se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 0, NULL, 0); | |
532 | ||
533 | for (i=0; i<SE401_NUMSBUF; i++) if (se401->urb[i]) { | |
534 | usb_kill_urb(se401->urb[i]); | |
535 | usb_free_urb(se401->urb[i]); | |
536 | se401->urb[i]=NULL; | |
537 | kfree(se401->sbuf[i].data); | |
538 | } | |
539 | for (i=0; i<SE401_NUMSCRATCH; i++) { | |
540 | kfree(se401->scratch[i].data); | |
541 | se401->scratch[i].data=NULL; | |
542 | } | |
543 | ||
544 | return 0; | |
545 | } | |
546 | ||
547 | static int se401_set_size(struct usb_se401 *se401, int width, int height) | |
548 | { | |
549 | int wasstreaming=se401->streaming; | |
550 | /* Check to see if we need to change */ | |
551 | if (se401->cwidth==width && se401->cheight==height) | |
552 | return 0; | |
553 | ||
554 | /* Check for a valid mode */ | |
555 | if (!width || !height) | |
556 | return 1; | |
557 | if ((width & 1) || (height & 1)) | |
558 | return 1; | |
559 | if (width>se401->width[se401->sizes-1]) | |
560 | return 1; | |
561 | if (height>se401->height[se401->sizes-1]) | |
562 | return 1; | |
563 | ||
564 | /* Stop a current stream and start it again at the new size */ | |
565 | if (wasstreaming) | |
566 | se401_stop_stream(se401); | |
567 | se401->cwidth=width; | |
568 | se401->cheight=height; | |
569 | if (wasstreaming) | |
570 | se401_start_stream(se401); | |
571 | return 0; | |
572 | } | |
573 | ||
574 | ||
575 | /**************************************************************************** | |
576 | * | |
577 | * Video Decoding | |
578 | * | |
579 | ***************************************************************************/ | |
580 | ||
581 | /* | |
582 | This shouldn't really be done in a v4l driver.... | |
583 | But it does make the image look a lot more usable. | |
584 | Basically it lifts the dark pixels more than the light pixels. | |
585 | */ | |
586 | static inline void enhance_picture(unsigned char *frame, int len) | |
587 | { | |
588 | while (len--) { | |
589 | *frame=(((*frame^255)*(*frame^255))/255)^255; | |
590 | frame++; | |
591 | } | |
592 | } | |
593 | ||
594 | static inline void decode_JangGu_integrate(struct usb_se401 *se401, int data) | |
595 | { | |
596 | struct se401_frame *frame=&se401->frame[se401->curframe]; | |
597 | int linelength=se401->cwidth*3; | |
598 | ||
599 | if (frame->curlinepix >= linelength) { | |
600 | frame->curlinepix=0; | |
601 | frame->curline+=linelength; | |
602 | } | |
603 | ||
604 | /* First three are absolute, all others relative. | |
d56410e0 | 605 | * Format is rgb from right to left (mirrorred image), |
1da177e4 LT |
606 | * we flip it to get bgr from left to right. */ |
607 | if (frame->curlinepix < 3) { | |
608 | *(frame->curline-frame->curlinepix)=1+data*4; | |
609 | } else { | |
610 | *(frame->curline-frame->curlinepix)= | |
611 | *(frame->curline-frame->curlinepix+3)+data*4; | |
612 | } | |
613 | frame->curlinepix++; | |
614 | } | |
615 | ||
616 | static inline void decode_JangGu_vlc (struct usb_se401 *se401, unsigned char *data, int bit_exp, int packetlength) | |
617 | { | |
618 | int pos=0; | |
619 | int vlc_cod=0; | |
620 | int vlc_size=0; | |
621 | int vlc_data=0; | |
622 | int bit_cur; | |
623 | int bit; | |
624 | data+=4; | |
625 | while (pos < packetlength) { | |
626 | bit_cur=8; | |
627 | while (bit_cur && bit_exp) { | |
628 | bit=((*data)>>(bit_cur-1))&1; | |
629 | if (!vlc_cod) { | |
630 | if (bit) { | |
631 | vlc_size++; | |
632 | } else { | |
633 | if (!vlc_size) { | |
634 | decode_JangGu_integrate(se401, 0); | |
635 | } else { | |
636 | vlc_cod=2; | |
637 | vlc_data=0; | |
638 | } | |
639 | } | |
640 | } else { | |
641 | if (vlc_cod==2) { | |
642 | if (!bit) | |
643 | vlc_data = -(1<<vlc_size) + 1; | |
644 | vlc_cod--; | |
645 | } | |
646 | vlc_size--; | |
647 | vlc_data+=bit<<vlc_size; | |
648 | if (!vlc_size) { | |
649 | decode_JangGu_integrate(se401, vlc_data); | |
650 | vlc_cod=0; | |
651 | } | |
652 | } | |
653 | bit_cur--; | |
654 | bit_exp--; | |
655 | } | |
656 | pos++; | |
657 | data++; | |
658 | } | |
659 | } | |
660 | ||
661 | static inline void decode_JangGu (struct usb_se401 *se401, struct se401_scratch *buffer) | |
662 | { | |
663 | unsigned char *data=buffer->data; | |
664 | int len=buffer->length; | |
665 | int bit_exp=0, pix_exp=0, frameinfo=0, packetlength=0, size; | |
666 | int datapos=0; | |
667 | ||
668 | /* New image? */ | |
669 | if (!se401->frame[se401->curframe].curpix) { | |
670 | se401->frame[se401->curframe].curlinepix=0; | |
671 | se401->frame[se401->curframe].curline= | |
672 | se401->frame[se401->curframe].data+ | |
673 | se401->cwidth*3-1; | |
674 | if (se401->frame[se401->curframe].grabstate==FRAME_READY) | |
675 | se401->frame[se401->curframe].grabstate=FRAME_GRABBING; | |
676 | se401->vlcdatapos=0; | |
677 | } | |
678 | while (datapos < len) { | |
679 | size=1024-se401->vlcdatapos; | |
680 | if (size+datapos > len) | |
681 | size=len-datapos; | |
682 | memcpy(se401->vlcdata+se401->vlcdatapos, data+datapos, size); | |
683 | se401->vlcdatapos+=size; | |
684 | packetlength=0; | |
685 | if (se401->vlcdatapos >= 4) { | |
686 | bit_exp=se401->vlcdata[3]+(se401->vlcdata[2]<<8); | |
687 | pix_exp=se401->vlcdata[1]+((se401->vlcdata[0]&0x3f)<<8); | |
688 | frameinfo=se401->vlcdata[0]&0xc0; | |
689 | packetlength=((bit_exp+47)>>4)<<1; | |
690 | if (packetlength > 1024) { | |
691 | se401->vlcdatapos=0; | |
692 | datapos=len; | |
693 | packetlength=0; | |
694 | se401->error++; | |
695 | se401->frame[se401->curframe].curpix=0; | |
696 | } | |
697 | } | |
698 | if (packetlength && se401->vlcdatapos >= packetlength) { | |
699 | decode_JangGu_vlc(se401, se401->vlcdata, bit_exp, packetlength); | |
700 | se401->frame[se401->curframe].curpix+=pix_exp*3; | |
701 | datapos+=size-(se401->vlcdatapos-packetlength); | |
702 | se401->vlcdatapos=0; | |
703 | if (se401->frame[se401->curframe].curpix>=se401->cwidth*se401->cheight*3) { | |
704 | if (se401->frame[se401->curframe].curpix==se401->cwidth*se401->cheight*3) { | |
705 | if (se401->frame[se401->curframe].grabstate==FRAME_GRABBING) { | |
706 | se401->frame[se401->curframe].grabstate=FRAME_DONE; | |
707 | se401->framecount++; | |
708 | se401->readcount++; | |
709 | } | |
710 | if (se401->frame[(se401->curframe+1)&(SE401_NUMFRAMES-1)].grabstate==FRAME_READY) { | |
711 | se401->curframe=(se401->curframe+1) & (SE401_NUMFRAMES-1); | |
712 | } | |
713 | } else { | |
714 | se401->error++; | |
715 | } | |
716 | se401->frame[se401->curframe].curpix=0; | |
717 | datapos=len; | |
718 | } | |
719 | } else { | |
720 | datapos+=size; | |
721 | } | |
722 | } | |
723 | } | |
724 | ||
725 | static inline void decode_bayer (struct usb_se401 *se401, struct se401_scratch *buffer) | |
726 | { | |
727 | unsigned char *data=buffer->data; | |
728 | int len=buffer->length; | |
729 | int offset=buffer->offset; | |
730 | int datasize=se401->cwidth*se401->cheight; | |
731 | struct se401_frame *frame=&se401->frame[se401->curframe]; | |
732 | ||
733 | unsigned char *framedata=frame->data, *curline, *nextline; | |
734 | int width=se401->cwidth; | |
735 | int blineoffset=0, bline; | |
736 | int linelength=width*3, i; | |
d56410e0 | 737 | |
1da177e4 LT |
738 | |
739 | if (frame->curpix==0) { | |
740 | if (frame->grabstate==FRAME_READY) { | |
741 | frame->grabstate=FRAME_GRABBING; | |
742 | } | |
743 | frame->curline=framedata+linelength; | |
744 | frame->curlinepix=0; | |
745 | } | |
746 | ||
747 | if (offset!=frame->curpix) { | |
748 | /* Regard frame as lost :( */ | |
749 | frame->curpix=0; | |
750 | se401->error++; | |
751 | return; | |
752 | } | |
753 | ||
754 | /* Check if we have to much data */ | |
755 | if (frame->curpix+len > datasize) { | |
756 | len=datasize-frame->curpix; | |
757 | } | |
758 | if (se401->cheight%4) | |
759 | blineoffset=1; | |
760 | bline=frame->curpix/se401->cwidth+blineoffset; | |
761 | ||
762 | curline=frame->curline; | |
763 | nextline=curline+linelength; | |
764 | if (nextline >= framedata+datasize*3) | |
765 | nextline=curline; | |
766 | while (len) { | |
767 | if (frame->curlinepix>=width) { | |
768 | frame->curlinepix-=width; | |
769 | bline=frame->curpix/width+blineoffset; | |
770 | curline+=linelength*2; | |
771 | nextline+=linelength*2; | |
772 | if (curline >= framedata+datasize*3) { | |
773 | frame->curlinepix++; | |
774 | curline-=3; | |
775 | nextline-=3; | |
776 | len--; | |
777 | data++; | |
778 | frame->curpix++; | |
779 | } | |
780 | if (nextline >= framedata+datasize*3) | |
781 | nextline=curline; | |
782 | } | |
783 | if ((bline&1)) { | |
784 | if ((frame->curlinepix&1)) { | |
785 | *(curline+2)=*data; | |
786 | *(curline-1)=*data; | |
787 | *(nextline+2)=*data; | |
788 | *(nextline-1)=*data; | |
789 | } else { | |
790 | *(curline+1)= | |
791 | (*(curline+1)+*data)/2; | |
792 | *(curline-2)= | |
793 | (*(curline-2)+*data)/2; | |
794 | *(nextline+1)=*data; | |
795 | *(nextline-2)=*data; | |
796 | } | |
797 | } else { | |
798 | if ((frame->curlinepix&1)) { | |
799 | *(curline+1)= | |
800 | (*(curline+1)+*data)/2; | |
801 | *(curline-2)= | |
802 | (*(curline-2)+*data)/2; | |
803 | *(nextline+1)=*data; | |
804 | *(nextline-2)=*data; | |
805 | } else { | |
806 | *curline=*data; | |
807 | *(curline-3)=*data; | |
808 | *nextline=*data; | |
809 | *(nextline-3)=*data; | |
810 | } | |
811 | } | |
812 | frame->curlinepix++; | |
813 | curline-=3; | |
814 | nextline-=3; | |
815 | len--; | |
816 | data++; | |
817 | frame->curpix++; | |
818 | } | |
819 | frame->curline=curline; | |
820 | ||
821 | if (frame->curpix>=datasize) { | |
822 | /* Fix the top line */ | |
823 | framedata+=linelength; | |
824 | for (i=0; i<linelength; i++) { | |
825 | framedata--; | |
826 | *framedata=*(framedata+linelength); | |
827 | } | |
828 | /* Fix the left side (green is already present) */ | |
829 | for (i=0; i<se401->cheight; i++) { | |
830 | *framedata=*(framedata+3); | |
831 | *(framedata+1)=*(framedata+4); | |
832 | *(framedata+2)=*(framedata+5); | |
833 | framedata+=linelength; | |
834 | } | |
835 | frame->curpix=0; | |
836 | frame->grabstate=FRAME_DONE; | |
837 | se401->framecount++; | |
838 | se401->readcount++; | |
839 | if (se401->frame[(se401->curframe+1)&(SE401_NUMFRAMES-1)].grabstate==FRAME_READY) { | |
840 | se401->curframe=(se401->curframe+1) & (SE401_NUMFRAMES-1); | |
841 | } | |
842 | } | |
843 | } | |
844 | ||
845 | static int se401_newframe(struct usb_se401 *se401, int framenr) | |
846 | { | |
847 | DECLARE_WAITQUEUE(wait, current); | |
848 | int errors=0; | |
849 | ||
850 | while (se401->streaming && | |
851 | (se401->frame[framenr].grabstate==FRAME_READY || | |
852 | se401->frame[framenr].grabstate==FRAME_GRABBING) ) { | |
853 | if(!se401->frame[framenr].curpix) { | |
854 | errors++; | |
855 | } | |
856 | wait_interruptible( | |
857 | se401->scratch[se401->scratch_use].state!=BUFFER_READY, | |
858 | &se401->wq, | |
859 | &wait | |
860 | ); | |
861 | if (se401->nullpackets > SE401_MAX_NULLPACKETS) { | |
862 | se401->nullpackets=0; | |
a482f327 GKH |
863 | dev_info(&se401->dev->dev, |
864 | "too many null length packets, restarting capture\n"); | |
1da177e4 | 865 | se401_stop_stream(se401); |
d56410e0 | 866 | se401_start_stream(se401); |
1da177e4 LT |
867 | } else { |
868 | if (se401->scratch[se401->scratch_use].state!=BUFFER_READY) { | |
869 | se401->frame[framenr].grabstate=FRAME_ERROR; | |
870 | return -EIO; | |
871 | } | |
872 | se401->scratch[se401->scratch_use].state=BUFFER_BUSY; | |
873 | if (se401->format==FMT_JANGGU) { | |
874 | decode_JangGu(se401, &se401->scratch[se401->scratch_use]); | |
875 | } else { | |
876 | decode_bayer(se401, &se401->scratch[se401->scratch_use]); | |
877 | } | |
878 | se401->scratch[se401->scratch_use].state=BUFFER_UNUSED; | |
879 | se401->scratch_use++; | |
880 | if (se401->scratch_use>=SE401_NUMSCRATCH) | |
881 | se401->scratch_use=0; | |
882 | if (errors > SE401_MAX_ERRORS) { | |
883 | errors=0; | |
a482f327 GKH |
884 | dev_info(&se401->dev->dev, |
885 | "too many errors, restarting capture\n"); | |
1da177e4 LT |
886 | se401_stop_stream(se401); |
887 | se401_start_stream(se401); | |
888 | } | |
889 | } | |
890 | } | |
891 | ||
892 | if (se401->frame[framenr].grabstate==FRAME_DONE) | |
893 | if (se401->enhance) | |
894 | enhance_picture(se401->frame[framenr].data, se401->cheight*se401->cwidth*3); | |
895 | return 0; | |
896 | } | |
897 | ||
898 | static void usb_se401_remove_disconnected (struct usb_se401 *se401) | |
899 | { | |
900 | int i; | |
901 | ||
d56410e0 | 902 | se401->dev = NULL; |
1da177e4 | 903 | |
1bc3c9e1 JJ |
904 | for (i=0; i<SE401_NUMSBUF; i++) |
905 | if (se401->urb[i]) { | |
906 | usb_kill_urb(se401->urb[i]); | |
907 | usb_free_urb(se401->urb[i]); | |
908 | se401->urb[i] = NULL; | |
909 | kfree(se401->sbuf[i].data); | |
910 | } | |
911 | for (i=0; i<SE401_NUMSCRATCH; i++) { | |
1da177e4 LT |
912 | kfree(se401->scratch[i].data); |
913 | } | |
914 | if (se401->inturb) { | |
915 | usb_kill_urb(se401->inturb); | |
916 | usb_free_urb(se401->inturb); | |
917 | } | |
a482f327 | 918 | dev_info(&se401->dev->dev, "%s disconnected", se401->camera_name); |
1da177e4 | 919 | |
d56410e0 | 920 | /* Free the memory */ |
1da177e4 LT |
921 | kfree(se401->width); |
922 | kfree(se401->height); | |
923 | kfree(se401); | |
924 | } | |
925 | ||
926 | ||
927 | ||
928 | /**************************************************************************** | |
929 | * | |
930 | * Video4Linux | |
931 | * | |
932 | ***************************************************************************/ | |
933 | ||
934 | ||
bec43661 | 935 | static int se401_open(struct file *file) |
1da177e4 LT |
936 | { |
937 | struct video_device *dev = video_devdata(file); | |
938 | struct usb_se401 *se401 = (struct usb_se401 *)dev; | |
939 | int err = 0; | |
940 | ||
d56dc612 HV |
941 | lock_kernel(); |
942 | if (se401->user) { | |
943 | unlock_kernel(); | |
1da177e4 | 944 | return -EBUSY; |
d56dc612 | 945 | } |
1da177e4 LT |
946 | se401->fbuf = rvmalloc(se401->maxframesize * SE401_NUMFRAMES); |
947 | if (se401->fbuf) | |
948 | file->private_data = dev; | |
d56410e0 | 949 | else |
1da177e4 LT |
950 | err = -ENOMEM; |
951 | se401->user = !err; | |
d56dc612 | 952 | unlock_kernel(); |
1da177e4 LT |
953 | |
954 | return err; | |
955 | } | |
956 | ||
bec43661 | 957 | static int se401_close(struct file *file) |
1da177e4 LT |
958 | { |
959 | struct video_device *dev = file->private_data; | |
d56410e0 | 960 | struct usb_se401 *se401 = (struct usb_se401 *)dev; |
1da177e4 LT |
961 | int i; |
962 | ||
963 | rvfree(se401->fbuf, se401->maxframesize * SE401_NUMFRAMES); | |
d56410e0 | 964 | if (se401->removed) { |
a482f327 | 965 | dev_info(&se401->dev->dev, "device unregistered\n"); |
1da177e4 | 966 | usb_se401_remove_disconnected(se401); |
1da177e4 LT |
967 | } else { |
968 | for (i=0; i<SE401_NUMFRAMES; i++) | |
969 | se401->frame[i].grabstate=FRAME_UNUSED; | |
970 | if (se401->streaming) | |
971 | se401_stop_stream(se401); | |
972 | se401->user=0; | |
973 | } | |
974 | file->private_data = NULL; | |
975 | return 0; | |
976 | } | |
977 | ||
069b7479 | 978 | static long se401_do_ioctl(struct file *file, unsigned int cmd, void *arg) |
1da177e4 LT |
979 | { |
980 | struct video_device *vdev = file->private_data; | |
d56410e0 | 981 | struct usb_se401 *se401 = (struct usb_se401 *)vdev; |
1da177e4 | 982 | |
d56410e0 MCC |
983 | if (!se401->dev) |
984 | return -EIO; | |
1da177e4 | 985 | |
d56410e0 | 986 | switch (cmd) { |
1da177e4 LT |
987 | case VIDIOCGCAP: |
988 | { | |
989 | struct video_capability *b = arg; | |
990 | strcpy(b->name, se401->camera_name); | |
991 | b->type = VID_TYPE_CAPTURE; | |
992 | b->channels = 1; | |
993 | b->audios = 0; | |
994 | b->maxwidth = se401->width[se401->sizes-1]; | |
995 | b->maxheight = se401->height[se401->sizes-1]; | |
996 | b->minwidth = se401->width[0]; | |
997 | b->minheight = se401->height[0]; | |
998 | return 0; | |
999 | } | |
1000 | case VIDIOCGCHAN: | |
1001 | { | |
1002 | struct video_channel *v = arg; | |
1003 | ||
1004 | if (v->channel != 0) | |
1005 | return -EINVAL; | |
1006 | v->flags = 0; | |
1007 | v->tuners = 0; | |
1008 | v->type = VIDEO_TYPE_CAMERA; | |
1009 | strcpy(v->name, "Camera"); | |
1010 | return 0; | |
1011 | } | |
1012 | case VIDIOCSCHAN: | |
1013 | { | |
1014 | struct video_channel *v = arg; | |
1015 | ||
1016 | if (v->channel != 0) | |
1017 | return -EINVAL; | |
1018 | return 0; | |
1019 | } | |
d56410e0 MCC |
1020 | case VIDIOCGPICT: |
1021 | { | |
1da177e4 LT |
1022 | struct video_picture *p = arg; |
1023 | ||
1024 | se401_get_pict(se401, p); | |
1025 | return 0; | |
1026 | } | |
1027 | case VIDIOCSPICT: | |
1028 | { | |
1029 | struct video_picture *p = arg; | |
1030 | ||
1031 | if (se401_set_pict(se401, p)) | |
1032 | return -EINVAL; | |
1033 | return 0; | |
1034 | } | |
1035 | case VIDIOCSWIN: | |
1036 | { | |
1037 | struct video_window *vw = arg; | |
1038 | ||
1039 | if (vw->flags) | |
1040 | return -EINVAL; | |
1041 | if (vw->clipcount) | |
1042 | return -EINVAL; | |
1043 | if (se401_set_size(se401, vw->width, vw->height)) | |
1044 | return -EINVAL; | |
1045 | return 0; | |
d56410e0 | 1046 | } |
1da177e4 LT |
1047 | case VIDIOCGWIN: |
1048 | { | |
1049 | struct video_window *vw = arg; | |
1050 | ||
1051 | vw->x = 0; /* FIXME */ | |
1052 | vw->y = 0; | |
1053 | vw->chromakey = 0; | |
1054 | vw->flags = 0; | |
1055 | vw->clipcount = 0; | |
1056 | vw->width = se401->cwidth; | |
1057 | vw->height = se401->cheight; | |
1058 | return 0; | |
1059 | } | |
1060 | case VIDIOCGMBUF: | |
1061 | { | |
1062 | struct video_mbuf *vm = arg; | |
1063 | int i; | |
1064 | ||
1065 | memset(vm, 0, sizeof(*vm)); | |
1066 | vm->size = SE401_NUMFRAMES * se401->maxframesize; | |
1067 | vm->frames = SE401_NUMFRAMES; | |
1068 | for (i=0; i<SE401_NUMFRAMES; i++) | |
1069 | vm->offsets[i] = se401->maxframesize * i; | |
1070 | return 0; | |
1071 | } | |
1072 | case VIDIOCMCAPTURE: | |
1073 | { | |
1074 | struct video_mmap *vm = arg; | |
1075 | ||
1076 | if (vm->format != VIDEO_PALETTE_RGB24) | |
1077 | return -EINVAL; | |
1078 | if (vm->frame >= SE401_NUMFRAMES) | |
1079 | return -EINVAL; | |
1080 | if (se401->frame[vm->frame].grabstate != FRAME_UNUSED) | |
1081 | return -EBUSY; | |
1082 | ||
1083 | /* Is this according to the v4l spec??? */ | |
1084 | if (se401_set_size(se401, vm->width, vm->height)) | |
1085 | return -EINVAL; | |
1086 | se401->frame[vm->frame].grabstate=FRAME_READY; | |
1087 | ||
1088 | if (!se401->streaming) | |
1089 | se401_start_stream(se401); | |
1090 | ||
1091 | /* Set the picture properties */ | |
1092 | if (se401->framecount==0) | |
1093 | se401_send_pict(se401); | |
1094 | /* Calibrate the reset level after a few frames. */ | |
1095 | if (se401->framecount%20==1) | |
1096 | se401_auto_resetlevel(se401); | |
1097 | ||
1098 | return 0; | |
1099 | } | |
1100 | case VIDIOCSYNC: | |
1101 | { | |
1102 | int *frame = arg; | |
1103 | int ret=0; | |
1104 | ||
1105 | if(*frame <0 || *frame >= SE401_NUMFRAMES) | |
1106 | return -EINVAL; | |
1107 | ||
1108 | ret=se401_newframe(se401, *frame); | |
1109 | se401->frame[*frame].grabstate=FRAME_UNUSED; | |
1110 | return ret; | |
1111 | } | |
1112 | case VIDIOCGFBUF: | |
1113 | { | |
1114 | struct video_buffer *vb = arg; | |
1115 | ||
1116 | memset(vb, 0, sizeof(*vb)); | |
1117 | return 0; | |
1118 | } | |
1119 | case VIDIOCKEY: | |
1120 | return 0; | |
1121 | case VIDIOCCAPTURE: | |
1122 | return -EINVAL; | |
1123 | case VIDIOCSFBUF: | |
1124 | return -EINVAL; | |
1125 | case VIDIOCGTUNER: | |
1126 | case VIDIOCSTUNER: | |
1127 | return -EINVAL; | |
1128 | case VIDIOCGFREQ: | |
1129 | case VIDIOCSFREQ: | |
1130 | return -EINVAL; | |
1131 | case VIDIOCGAUDIO: | |
1132 | case VIDIOCSAUDIO: | |
1133 | return -EINVAL; | |
d56410e0 MCC |
1134 | default: |
1135 | return -ENOIOCTLCMD; | |
1136 | } /* end switch */ | |
1da177e4 | 1137 | |
d56410e0 | 1138 | return 0; |
1da177e4 LT |
1139 | } |
1140 | ||
069b7479 | 1141 | static long se401_ioctl(struct file *file, |
1da177e4 LT |
1142 | unsigned int cmd, unsigned long arg) |
1143 | { | |
f473bf76 | 1144 | return video_usercopy(file, cmd, arg, se401_do_ioctl); |
1da177e4 LT |
1145 | } |
1146 | ||
1147 | static ssize_t se401_read(struct file *file, char __user *buf, | |
1148 | size_t count, loff_t *ppos) | |
1149 | { | |
1150 | int realcount=count, ret=0; | |
1151 | struct video_device *dev = file->private_data; | |
1152 | struct usb_se401 *se401 = (struct usb_se401 *)dev; | |
1153 | ||
1154 | ||
1155 | if (se401->dev == NULL) | |
1156 | return -EIO; | |
1157 | if (realcount > se401->cwidth*se401->cheight*3) | |
1158 | realcount=se401->cwidth*se401->cheight*3; | |
1159 | ||
1160 | /* Shouldn't happen: */ | |
1161 | if (se401->frame[0].grabstate==FRAME_GRABBING) | |
1162 | return -EBUSY; | |
1163 | se401->frame[0].grabstate=FRAME_READY; | |
1164 | se401->frame[1].grabstate=FRAME_UNUSED; | |
1165 | se401->curframe=0; | |
1166 | ||
1167 | if (!se401->streaming) | |
1168 | se401_start_stream(se401); | |
1169 | ||
1170 | /* Set the picture properties */ | |
1171 | if (se401->framecount==0) | |
1172 | se401_send_pict(se401); | |
1173 | /* Calibrate the reset level after a few frames. */ | |
1174 | if (se401->framecount%20==1) | |
1175 | se401_auto_resetlevel(se401); | |
1176 | ||
1177 | ret=se401_newframe(se401, 0); | |
1178 | ||
1179 | se401->frame[0].grabstate=FRAME_UNUSED; | |
1180 | if (ret) | |
d56410e0 | 1181 | return ret; |
1da177e4 LT |
1182 | if (copy_to_user(buf, se401->frame[0].data, realcount)) |
1183 | return -EFAULT; | |
1184 | ||
1185 | return realcount; | |
1186 | } | |
1187 | ||
1188 | static int se401_mmap(struct file *file, struct vm_area_struct *vma) | |
1189 | { | |
1190 | struct video_device *dev = file->private_data; | |
1191 | struct usb_se401 *se401 = (struct usb_se401 *)dev; | |
1192 | unsigned long start = vma->vm_start; | |
1193 | unsigned long size = vma->vm_end-vma->vm_start; | |
1194 | unsigned long page, pos; | |
1195 | ||
4186ecf8 | 1196 | mutex_lock(&se401->lock); |
1da177e4 LT |
1197 | |
1198 | if (se401->dev == NULL) { | |
4186ecf8 | 1199 | mutex_unlock(&se401->lock); |
1da177e4 LT |
1200 | return -EIO; |
1201 | } | |
1202 | if (size > (((SE401_NUMFRAMES * se401->maxframesize) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))) { | |
4186ecf8 | 1203 | mutex_unlock(&se401->lock); |
1da177e4 LT |
1204 | return -EINVAL; |
1205 | } | |
1206 | pos = (unsigned long)se401->fbuf; | |
1207 | while (size > 0) { | |
1208 | page = vmalloc_to_pfn((void *)pos); | |
1209 | if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) { | |
4186ecf8 | 1210 | mutex_unlock(&se401->lock); |
1da177e4 LT |
1211 | return -EAGAIN; |
1212 | } | |
1213 | start += PAGE_SIZE; | |
1214 | pos += PAGE_SIZE; | |
1215 | if (size > PAGE_SIZE) | |
1216 | size -= PAGE_SIZE; | |
1217 | else | |
1218 | size = 0; | |
1219 | } | |
4186ecf8 | 1220 | mutex_unlock(&se401->lock); |
1da177e4 | 1221 | |
d56410e0 | 1222 | return 0; |
1da177e4 LT |
1223 | } |
1224 | ||
bec43661 | 1225 | static const struct v4l2_file_operations se401_fops = { |
1da177e4 | 1226 | .owner = THIS_MODULE, |
d56410e0 MCC |
1227 | .open = se401_open, |
1228 | .release = se401_close, | |
1229 | .read = se401_read, | |
1230 | .mmap = se401_mmap, | |
1da177e4 | 1231 | .ioctl = se401_ioctl, |
1da177e4 LT |
1232 | }; |
1233 | static struct video_device se401_template = { | |
d56410e0 | 1234 | .name = "se401 USB camera", |
1da177e4 | 1235 | .fops = &se401_fops, |
aa5e90af | 1236 | .release = video_device_release_empty, |
1da177e4 LT |
1237 | }; |
1238 | ||
1239 | ||
1240 | ||
1241 | /***************************/ | |
1242 | static int se401_init(struct usb_se401 *se401, int button) | |
1243 | { | |
d56410e0 MCC |
1244 | int i=0, rc; |
1245 | unsigned char cp[0x40]; | |
1da177e4 LT |
1246 | char temp[200]; |
1247 | ||
1248 | /* led on */ | |
d56410e0 | 1249 | se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 1, NULL, 0); |
1da177e4 LT |
1250 | |
1251 | /* get camera descriptor */ | |
1252 | rc=se401_sndctrl(0, se401, SE401_REQ_GET_CAMERA_DESCRIPTOR, 0, cp, sizeof(cp)); | |
1253 | if (cp[1]!=0x41) { | |
1254 | err("Wrong descriptor type"); | |
1255 | return 1; | |
1256 | } | |
1257 | sprintf (temp, "ExtraFeatures: %d", cp[3]); | |
1258 | ||
1259 | se401->sizes=cp[4]+cp[5]*256; | |
1260 | se401->width=kmalloc(se401->sizes*sizeof(int), GFP_KERNEL); | |
1261 | if (!se401->width) | |
1262 | return 1; | |
1263 | se401->height=kmalloc(se401->sizes*sizeof(int), GFP_KERNEL); | |
1264 | if (!se401->height) { | |
1265 | kfree(se401->width); | |
1266 | return 1; | |
1267 | } | |
1268 | for (i=0; i<se401->sizes; i++) { | |
1269 | se401->width[i]=cp[6+i*4+0]+cp[6+i*4+1]*256; | |
1270 | se401->height[i]=cp[6+i*4+2]+cp[6+i*4+3]*256; | |
1271 | } | |
1272 | sprintf (temp, "%s Sizes:", temp); | |
1273 | for (i=0; i<se401->sizes; i++) { | |
1274 | sprintf(temp, "%s %dx%d", temp, se401->width[i], se401->height[i]); | |
1275 | } | |
a482f327 | 1276 | dev_info(&se401->dev->dev, "%s\n", temp); |
1da177e4 LT |
1277 | se401->maxframesize=se401->width[se401->sizes-1]*se401->height[se401->sizes-1]*3; |
1278 | ||
1279 | rc=se401_sndctrl(0, se401, SE401_REQ_GET_WIDTH, 0, cp, sizeof(cp)); | |
1280 | se401->cwidth=cp[0]+cp[1]*256; | |
1281 | rc=se401_sndctrl(0, se401, SE401_REQ_GET_HEIGHT, 0, cp, sizeof(cp)); | |
1282 | se401->cheight=cp[0]+cp[1]*256; | |
1283 | ||
33b4af91 | 1284 | if (!(cp[2] & SE401_FORMAT_BAYER)) { |
1da177e4 LT |
1285 | err("Bayer format not supported!"); |
1286 | return 1; | |
1287 | } | |
1288 | /* set output mode (BAYER) */ | |
d56410e0 | 1289 | se401_sndctrl(1, se401, SE401_REQ_SET_OUTPUT_MODE, SE401_FORMAT_BAYER, NULL, 0); |
1da177e4 LT |
1290 | |
1291 | rc=se401_sndctrl(0, se401, SE401_REQ_GET_BRT, 0, cp, sizeof(cp)); | |
1292 | se401->brightness=cp[0]+cp[1]*256; | |
1293 | /* some default values */ | |
1294 | se401->resetlevel=0x2d; | |
1295 | se401->rgain=0x20; | |
1296 | se401->ggain=0x20; | |
1297 | se401->bgain=0x20; | |
1298 | se401_set_exposure(se401, 20000); | |
1299 | se401->palette=VIDEO_PALETTE_RGB24; | |
1300 | se401->enhance=1; | |
1301 | se401->dropped=0; | |
1302 | se401->error=0; | |
1303 | se401->framecount=0; | |
1304 | se401->readcount=0; | |
1305 | ||
1306 | /* Start interrupt transfers for snapshot button */ | |
1307 | if (button) { | |
1308 | se401->inturb=usb_alloc_urb(0, GFP_KERNEL); | |
1309 | if (!se401->inturb) { | |
a482f327 GKH |
1310 | dev_info(&se401->dev->dev, |
1311 | "Allocation of inturb failed\n"); | |
1da177e4 LT |
1312 | return 1; |
1313 | } | |
1314 | usb_fill_int_urb(se401->inturb, se401->dev, | |
1315 | usb_rcvintpipe(se401->dev, SE401_BUTTON_ENDPOINT), | |
1316 | &se401->button, sizeof(se401->button), | |
1317 | se401_button_irq, | |
1318 | se401, | |
1319 | 8 | |
1320 | ); | |
1321 | if (usb_submit_urb(se401->inturb, GFP_KERNEL)) { | |
a482f327 | 1322 | dev_info(&se401->dev->dev, "int urb burned down\n"); |
1da177e4 LT |
1323 | return 1; |
1324 | } | |
1325 | } else | |
1326 | se401->inturb=NULL; | |
1327 | ||
d56410e0 MCC |
1328 | /* Flash the led */ |
1329 | se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 1, NULL, 0); | |
1330 | se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 1, NULL, 0); | |
1331 | se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 0, NULL, 0); | |
1da177e4 LT |
1332 | se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 0, NULL, 0); |
1333 | ||
d56410e0 | 1334 | return 0; |
1da177e4 LT |
1335 | } |
1336 | ||
1337 | static int se401_probe(struct usb_interface *intf, | |
1338 | const struct usb_device_id *id) | |
1339 | { | |
1340 | struct usb_device *dev = interface_to_usbdev(intf); | |
d56410e0 MCC |
1341 | struct usb_interface_descriptor *interface; |
1342 | struct usb_se401 *se401; | |
1343 | char *camera_name=NULL; | |
1da177e4 LT |
1344 | int button=1; |
1345 | ||
d56410e0 MCC |
1346 | /* We don't handle multi-config cameras */ |
1347 | if (dev->descriptor.bNumConfigurations != 1) | |
1348 | return -ENODEV; | |
1da177e4 | 1349 | |
d56410e0 | 1350 | interface = &intf->cur_altsetting->desc; |
1da177e4 | 1351 | |
d56410e0 MCC |
1352 | /* Is it an se401? */ |
1353 | if (le16_to_cpu(dev->descriptor.idVendor) == 0x03e8 && | |
1354 | le16_to_cpu(dev->descriptor.idProduct) == 0x0004) { | |
1355 | camera_name="Endpoints/Aox SE401"; | |
1356 | } else if (le16_to_cpu(dev->descriptor.idVendor) == 0x0471 && | |
1357 | le16_to_cpu(dev->descriptor.idProduct) == 0x030b) { | |
1358 | camera_name="Philips PCVC665K"; | |
1359 | } else if (le16_to_cpu(dev->descriptor.idVendor) == 0x047d && | |
1da177e4 LT |
1360 | le16_to_cpu(dev->descriptor.idProduct) == 0x5001) { |
1361 | camera_name="Kensington VideoCAM 67014"; | |
d56410e0 | 1362 | } else if (le16_to_cpu(dev->descriptor.idVendor) == 0x047d && |
1da177e4 LT |
1363 | le16_to_cpu(dev->descriptor.idProduct) == 0x5002) { |
1364 | camera_name="Kensington VideoCAM 6701(5/7)"; | |
d56410e0 | 1365 | } else if (le16_to_cpu(dev->descriptor.idVendor) == 0x047d && |
1da177e4 LT |
1366 | le16_to_cpu(dev->descriptor.idProduct) == 0x5003) { |
1367 | camera_name="Kensington VideoCAM 67016"; | |
1368 | button=0; | |
1369 | } else | |
1370 | return -ENODEV; | |
1371 | ||
d56410e0 MCC |
1372 | /* Checking vendor/product should be enough, but what the hell */ |
1373 | if (interface->bInterfaceClass != 0x00) | |
1da177e4 | 1374 | return -ENODEV; |
d56410e0 | 1375 | if (interface->bInterfaceSubClass != 0x00) |
1da177e4 LT |
1376 | return -ENODEV; |
1377 | ||
d56410e0 | 1378 | /* We found one */ |
a482f327 | 1379 | dev_info(&intf->dev, "SE401 camera found: %s\n", camera_name); |
1da177e4 | 1380 | |
d56410e0 MCC |
1381 | if ((se401 = kzalloc(sizeof(*se401), GFP_KERNEL)) == NULL) { |
1382 | err("couldn't kmalloc se401 struct"); | |
1da177e4 | 1383 | return -ENOMEM; |
d56410e0 | 1384 | } |
1da177e4 | 1385 | |
d56410e0 MCC |
1386 | se401->dev = dev; |
1387 | se401->iface = interface->bInterfaceNumber; | |
1388 | se401->camera_name = camera_name; | |
1da177e4 | 1389 | |
a482f327 GKH |
1390 | dev_info(&intf->dev, "firmware version: %02x\n", |
1391 | le16_to_cpu(dev->descriptor.bcdDevice) & 255); | |
1da177e4 | 1392 | |
d56410e0 | 1393 | if (se401_init(se401, button)) { |
1da177e4 LT |
1394 | kfree(se401); |
1395 | return -EIO; | |
1396 | } | |
1397 | ||
1398 | memcpy(&se401->vdev, &se401_template, sizeof(se401_template)); | |
1399 | memcpy(se401->vdev.name, se401->camera_name, strlen(se401->camera_name)); | |
1400 | init_waitqueue_head(&se401->wq); | |
4186ecf8 | 1401 | mutex_init(&se401->lock); |
1da177e4 LT |
1402 | wmb(); |
1403 | ||
dc60de33 | 1404 | if (video_register_device(&se401->vdev, VFL_TYPE_GRABBER, video_nr) < 0) { |
1da177e4 LT |
1405 | kfree(se401); |
1406 | err("video_register_device failed"); | |
1407 | return -EIO; | |
1408 | } | |
a482f327 | 1409 | dev_info(&intf->dev, "registered new video device: video%d\n", |
c6330fb8 | 1410 | se401->vdev.num); |
1da177e4 LT |
1411 | |
1412 | usb_set_intfdata (intf, se401); | |
d56410e0 | 1413 | return 0; |
1da177e4 LT |
1414 | } |
1415 | ||
1416 | static void se401_disconnect(struct usb_interface *intf) | |
1417 | { | |
1418 | struct usb_se401 *se401 = usb_get_intfdata (intf); | |
1419 | ||
1420 | usb_set_intfdata (intf, NULL); | |
1421 | if (se401) { | |
1422 | video_unregister_device(&se401->vdev); | |
1423 | if (!se401->user){ | |
1424 | usb_se401_remove_disconnected(se401); | |
1425 | } else { | |
1426 | se401->frame[0].grabstate = FRAME_ERROR; | |
1427 | se401->frame[0].grabstate = FRAME_ERROR; | |
1428 | ||
1429 | se401->streaming = 0; | |
1430 | ||
1431 | wake_up_interruptible(&se401->wq); | |
1432 | se401->removed = 1; | |
1433 | } | |
1434 | } | |
1435 | } | |
1436 | ||
1437 | static struct usb_driver se401_driver = { | |
d56410e0 MCC |
1438 | .name = "se401", |
1439 | .id_table = device_table, | |
1da177e4 | 1440 | .probe = se401_probe, |
d56410e0 | 1441 | .disconnect = se401_disconnect, |
1da177e4 LT |
1442 | }; |
1443 | ||
1444 | ||
1445 | ||
1446 | /**************************************************************************** | |
1447 | * | |
1448 | * Module routines | |
1449 | * | |
1450 | ***************************************************************************/ | |
1451 | ||
1452 | static int __init usb_se401_init(void) | |
1453 | { | |
a482f327 | 1454 | printk(KERN_INFO "SE401 usb camera driver version %s registering\n", version); |
1da177e4 LT |
1455 | if (flickerless) |
1456 | if (flickerless!=50 && flickerless!=60) { | |
a482f327 | 1457 | printk(KERN_ERR "Invallid flickerless value, use 0, 50 or 60.\n"); |
1da177e4 LT |
1458 | return -1; |
1459 | } | |
1460 | return usb_register(&se401_driver); | |
1461 | } | |
1462 | ||
1463 | static void __exit usb_se401_exit(void) | |
1464 | { | |
1465 | usb_deregister(&se401_driver); | |
a482f327 | 1466 | printk(KERN_INFO "SE401 driver deregistered\frame"); |
1da177e4 LT |
1467 | } |
1468 | ||
1469 | module_init(usb_se401_init); | |
1470 | module_exit(usb_se401_exit); |