diff options
Diffstat (limited to 'drivers/usb/media/stv680.c')
-rw-r--r-- | drivers/usb/media/stv680.c | 1506 |
1 files changed, 1506 insertions, 0 deletions
diff --git a/drivers/usb/media/stv680.c b/drivers/usb/media/stv680.c new file mode 100644 index 000000000000..ae455c8e3702 --- /dev/null +++ b/drivers/usb/media/stv680.c | |||
@@ -0,0 +1,1506 @@ | |||
1 | /* | ||
2 | * STV0680 USB Camera Driver, by Kevin Sisson (kjsisson@bellsouth.net) | ||
3 | * | ||
4 | * Thanks to STMicroelectronics for information on the usb commands, and | ||
5 | * to Steve Miller at STM for his help and encouragement while I was | ||
6 | * writing this driver. | ||
7 | * | ||
8 | * This driver is based heavily on the | ||
9 | * Endpoints (formerly known as AOX) se401 USB Camera Driver | ||
10 | * Copyright (c) 2000 Jeroen B. Vreeken (pe1rxq@amsat.org) | ||
11 | * | ||
12 | * Still somewhat based on the Linux ov511 driver. | ||
13 | * | ||
14 | * This program is free software; you can redistribute it and/or modify it | ||
15 | * under the terms of the GNU General Public License as published by the | ||
16 | * Free Software Foundation; either version 2 of the License, or (at your | ||
17 | * option) any later version. | ||
18 | * | ||
19 | * This program is distributed in the hope that it will be useful, but | ||
20 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | ||
21 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
22 | * for more details. | ||
23 | * | ||
24 | * You should have received a copy of the GNU General Public License | ||
25 | * along with this program; if not, write to the Free Software Foundation, | ||
26 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
27 | * | ||
28 | * History: | ||
29 | * ver 0.1 October, 2001. Initial attempt. | ||
30 | * | ||
31 | * ver 0.2 November, 2001. Fixed asbility to resize, added brightness | ||
32 | * function, made more stable (?) | ||
33 | * | ||
34 | * ver 0.21 Nov, 2001. Added gamma correction and white balance, | ||
35 | * due to Alexander Schwartz. Still trying to | ||
36 | * improve stablility. Moved stuff into stv680.h | ||
37 | * | ||
38 | * ver 0.22 Nov, 2001. Added sharpen function (by Michael Sweet, | ||
39 | * mike@easysw.com) from GIMP, also used in pencam. | ||
40 | * Simple, fast, good integer math routine. | ||
41 | * | ||
42 | * ver 0.23 Dec, 2001 (gkh) | ||
43 | * Took out sharpen function, ran code through | ||
44 | * Lindent, and did other minor tweaks to get | ||
45 | * things to work properly with 2.5.1 | ||
46 | * | ||
47 | * ver 0.24 Jan, 2002 (kjs) | ||
48 | * Fixed the problem with webcam crashing after | ||
49 | * two pictures. Changed the way pic is halved to | ||
50 | * improve quality. Got rid of green line around | ||
51 | * frame. Fix brightness reset when changing size | ||
52 | * bug. Adjusted gamma filters slightly. | ||
53 | * | ||
54 | * ver 0.25 Jan, 2002 (kjs) | ||
55 | * Fixed a bug in which the driver sometimes attempted | ||
56 | * to set to a non-supported size. This allowed | ||
57 | * gnomemeeting to work. | ||
58 | * Fixed proc entry removal bug. | ||
59 | */ | ||
60 | |||
61 | #include <linux/config.h> | ||
62 | #include <linux/module.h> | ||
63 | #include <linux/init.h> | ||
64 | #include <linux/vmalloc.h> | ||
65 | #include <linux/slab.h> | ||
66 | #include <linux/pagemap.h> | ||
67 | #include <linux/errno.h> | ||
68 | #include <linux/videodev.h> | ||
69 | #include <linux/usb.h> | ||
70 | |||
71 | #include "stv680.h" | ||
72 | |||
73 | static int video_nr = -1; | ||
74 | static int swapRGB = 0; /* default for auto sleect */ | ||
75 | static int swapRGB_on = 0; /* default to allow auto select; -1=swap never, +1= swap always */ | ||
76 | |||
77 | static unsigned int debug = 0; | ||
78 | |||
79 | #define PDEBUG(level, fmt, args...) \ | ||
80 | do { \ | ||
81 | if (debug >= level) \ | ||
82 | info("[%s:%d] " fmt, __FUNCTION__, __LINE__ , ## args); \ | ||
83 | } while (0) | ||
84 | |||
85 | |||
86 | /* | ||
87 | * Version Information | ||
88 | */ | ||
89 | #define DRIVER_VERSION "v0.25" | ||
90 | #define DRIVER_AUTHOR "Kevin Sisson <kjsisson@bellsouth.net>" | ||
91 | #define DRIVER_DESC "STV0680 USB Camera Driver" | ||
92 | |||
93 | MODULE_AUTHOR (DRIVER_AUTHOR); | ||
94 | MODULE_DESCRIPTION (DRIVER_DESC); | ||
95 | MODULE_LICENSE ("GPL"); | ||
96 | module_param(debug, int, S_IRUGO | S_IWUSR); | ||
97 | MODULE_PARM_DESC (debug, "Debug enabled or not"); | ||
98 | module_param(swapRGB_on, int, 0); | ||
99 | MODULE_PARM_DESC (swapRGB_on, "Red/blue swap: 1=always, 0=auto, -1=never"); | ||
100 | module_param(video_nr, int, 0); | ||
101 | |||
102 | /******************************************************************** | ||
103 | * | ||
104 | * Memory management | ||
105 | * | ||
106 | * This is a shameless copy from the USB-cpia driver (linux kernel | ||
107 | * version 2.3.29 or so, I have no idea what this code actually does ;). | ||
108 | * Actually it seems to be a copy of a shameless copy of the bttv-driver. | ||
109 | * Or that is a copy of a shameless copy of ... (To the powers: is there | ||
110 | * no generic kernel-function to do this sort of stuff?) | ||
111 | * | ||
112 | * Yes, it was a shameless copy from the bttv-driver. IIRC, Alan says | ||
113 | * there will be one, but apparentely not yet -jerdfelt | ||
114 | * | ||
115 | * So I copied it again for the ov511 driver -claudio | ||
116 | * | ||
117 | * Same for the se401 driver -Jeroen | ||
118 | * | ||
119 | * And the STV0680 driver - Kevin | ||
120 | ********************************************************************/ | ||
121 | static void *rvmalloc (unsigned long size) | ||
122 | { | ||
123 | void *mem; | ||
124 | unsigned long adr; | ||
125 | |||
126 | size = PAGE_ALIGN(size); | ||
127 | mem = vmalloc_32 (size); | ||
128 | if (!mem) | ||
129 | return NULL; | ||
130 | |||
131 | memset (mem, 0, size); /* Clear the ram out, no junk to the user */ | ||
132 | adr = (unsigned long) mem; | ||
133 | while (size > 0) { | ||
134 | SetPageReserved(vmalloc_to_page((void *)adr)); | ||
135 | adr += PAGE_SIZE; | ||
136 | size -= PAGE_SIZE; | ||
137 | } | ||
138 | return mem; | ||
139 | } | ||
140 | |||
141 | static void rvfree (void *mem, unsigned long size) | ||
142 | { | ||
143 | unsigned long adr; | ||
144 | |||
145 | if (!mem) | ||
146 | return; | ||
147 | |||
148 | adr = (unsigned long) mem; | ||
149 | while ((long) size > 0) { | ||
150 | ClearPageReserved(vmalloc_to_page((void *)adr)); | ||
151 | adr += PAGE_SIZE; | ||
152 | size -= PAGE_SIZE; | ||
153 | } | ||
154 | vfree (mem); | ||
155 | } | ||
156 | |||
157 | |||
158 | /********************************************************************* | ||
159 | * pencam read/write functions | ||
160 | ********************************************************************/ | ||
161 | |||
162 | static int stv_sndctrl (int set, struct usb_stv *stv680, unsigned short req, unsigned short value, unsigned char *buffer, int size) | ||
163 | { | ||
164 | int ret = -1; | ||
165 | |||
166 | switch (set) { | ||
167 | case 0: /* 0xc1 */ | ||
168 | ret = usb_control_msg (stv680->udev, | ||
169 | usb_rcvctrlpipe (stv680->udev, 0), | ||
170 | req, | ||
171 | (USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT), | ||
172 | value, 0, buffer, size, PENCAM_TIMEOUT); | ||
173 | break; | ||
174 | |||
175 | case 1: /* 0x41 */ | ||
176 | ret = usb_control_msg (stv680->udev, | ||
177 | usb_sndctrlpipe (stv680->udev, 0), | ||
178 | req, | ||
179 | (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT), | ||
180 | value, 0, buffer, size, PENCAM_TIMEOUT); | ||
181 | break; | ||
182 | |||
183 | case 2: /* 0x80 */ | ||
184 | ret = usb_control_msg (stv680->udev, | ||
185 | usb_rcvctrlpipe (stv680->udev, 0), | ||
186 | req, | ||
187 | (USB_DIR_IN | USB_RECIP_DEVICE), | ||
188 | value, 0, buffer, size, PENCAM_TIMEOUT); | ||
189 | break; | ||
190 | |||
191 | case 3: /* 0x40 */ | ||
192 | ret = usb_control_msg (stv680->udev, | ||
193 | usb_sndctrlpipe (stv680->udev, 0), | ||
194 | req, | ||
195 | (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE), | ||
196 | value, 0, buffer, size, PENCAM_TIMEOUT); | ||
197 | break; | ||
198 | |||
199 | } | ||
200 | if ((ret < 0) && (req != 0x0a)) { | ||
201 | PDEBUG (1, "STV(e): usb_control_msg error %i, request = 0x%x, error = %i", set, req, ret); | ||
202 | } | ||
203 | return ret; | ||
204 | } | ||
205 | |||
206 | static int stv_set_config (struct usb_stv *dev, int configuration, int interface, int alternate) | ||
207 | { | ||
208 | |||
209 | if (configuration != dev->udev->actconfig->desc.bConfigurationValue | ||
210 | || usb_reset_configuration (dev->udev) < 0) { | ||
211 | PDEBUG (1, "STV(e): FAILED to reset configuration %i", configuration); | ||
212 | return -1; | ||
213 | } | ||
214 | if (usb_set_interface (dev->udev, interface, alternate) < 0) { | ||
215 | PDEBUG (1, "STV(e): FAILED to set alternate interface %i", alternate); | ||
216 | return -1; | ||
217 | } | ||
218 | return 0; | ||
219 | } | ||
220 | |||
221 | static int stv_stop_video (struct usb_stv *dev) | ||
222 | { | ||
223 | int i; | ||
224 | unsigned char *buf; | ||
225 | |||
226 | buf = kmalloc (40, GFP_KERNEL); | ||
227 | if (buf == NULL) { | ||
228 | PDEBUG (0, "STV(e): Out of (small buf) memory"); | ||
229 | return -1; | ||
230 | } | ||
231 | |||
232 | /* this is a high priority command; it stops all lower order commands */ | ||
233 | if ((i = stv_sndctrl (1, dev, 0x04, 0x0000, buf, 0x0)) < 0) { | ||
234 | i = stv_sndctrl (0, dev, 0x80, 0, buf, 0x02); /* Get Last Error; 2 = busy */ | ||
235 | PDEBUG (1, "STV(i): last error: %i, command = 0x%x", buf[0], buf[1]); | ||
236 | } else { | ||
237 | PDEBUG (1, "STV(i): Camera reset to idle mode."); | ||
238 | } | ||
239 | |||
240 | if ((i = stv_set_config (dev, 1, 0, 0)) < 0) | ||
241 | PDEBUG (1, "STV(e): Reset config during exit failed"); | ||
242 | |||
243 | /* get current mode */ | ||
244 | buf[0] = 0xf0; | ||
245 | if ((i = stv_sndctrl (0, dev, 0x87, 0, buf, 0x08)) != 0x08) /* get mode */ | ||
246 | PDEBUG (0, "STV(e): Stop_video: problem setting original mode"); | ||
247 | if (dev->origMode != buf[0]) { | ||
248 | memset (buf, 0, 8); | ||
249 | buf[0] = (unsigned char) dev->origMode; | ||
250 | if ((i = stv_sndctrl (3, dev, 0x07, 0x0100, buf, 0x08)) != 0x08) { | ||
251 | PDEBUG (0, "STV(e): Stop_video: Set_Camera_Mode failed"); | ||
252 | i = -1; | ||
253 | } | ||
254 | buf[0] = 0xf0; | ||
255 | i = stv_sndctrl (0, dev, 0x87, 0, buf, 0x08); | ||
256 | if ((i != 0x08) || (buf[0] != dev->origMode)) { | ||
257 | PDEBUG (0, "STV(e): camera NOT set to original resolution."); | ||
258 | i = -1; | ||
259 | } else | ||
260 | PDEBUG (0, "STV(i): Camera set to original resolution"); | ||
261 | } | ||
262 | /* origMode */ | ||
263 | kfree (buf); | ||
264 | return i; | ||
265 | } | ||
266 | |||
267 | static int stv_set_video_mode (struct usb_stv *dev) | ||
268 | { | ||
269 | int i, stop_video = 1; | ||
270 | unsigned char *buf; | ||
271 | |||
272 | buf = kmalloc (40, GFP_KERNEL); | ||
273 | if (buf == NULL) { | ||
274 | PDEBUG (0, "STV(e): Out of (small buf) memory"); | ||
275 | return -1; | ||
276 | } | ||
277 | |||
278 | if ((i = stv_set_config (dev, 1, 0, 0)) < 0) { | ||
279 | kfree (buf); | ||
280 | return i; | ||
281 | } | ||
282 | |||
283 | i = stv_sndctrl (2, dev, 0x06, 0x0100, buf, 0x12); | ||
284 | if (!(i > 0) && (buf[8] == 0x53) && (buf[9] == 0x05)) { | ||
285 | PDEBUG (1, "STV(e): Could not get descriptor 0100."); | ||
286 | goto error; | ||
287 | } | ||
288 | |||
289 | /* set alternate interface 1 */ | ||
290 | if ((i = stv_set_config (dev, 1, 0, 1)) < 0) | ||
291 | goto error; | ||
292 | |||
293 | if ((i = stv_sndctrl (0, dev, 0x85, 0, buf, 0x10)) != 0x10) | ||
294 | goto error; | ||
295 | PDEBUG (1, "STV(i): Setting video mode."); | ||
296 | /* Switch to Video mode: 0x0100 = VGA (640x480), 0x0000 = CIF (352x288) 0x0300 = QVGA (320x240) */ | ||
297 | if ((i = stv_sndctrl (1, dev, 0x09, dev->VideoMode, buf, 0x0)) < 0) { | ||
298 | stop_video = 0; | ||
299 | goto error; | ||
300 | } | ||
301 | goto exit; | ||
302 | |||
303 | error: | ||
304 | kfree (buf); | ||
305 | if (stop_video == 1) | ||
306 | stv_stop_video (dev); | ||
307 | return -1; | ||
308 | |||
309 | exit: | ||
310 | kfree (buf); | ||
311 | return 0; | ||
312 | } | ||
313 | |||
314 | static int stv_init (struct usb_stv *stv680) | ||
315 | { | ||
316 | int i = 0; | ||
317 | unsigned char *buffer; | ||
318 | unsigned long int bufsize; | ||
319 | |||
320 | buffer = kmalloc (40, GFP_KERNEL); | ||
321 | if (buffer == NULL) { | ||
322 | PDEBUG (0, "STV(e): Out of (small buf) memory"); | ||
323 | return -1; | ||
324 | } | ||
325 | memset (buffer, 0, 40); | ||
326 | udelay (100); | ||
327 | |||
328 | /* set config 1, interface 0, alternate 0 */ | ||
329 | if ((i = stv_set_config (stv680, 1, 0, 0)) < 0) { | ||
330 | kfree (buffer); | ||
331 | PDEBUG (0, "STV(e): set config 1,0,0 failed"); | ||
332 | return -1; | ||
333 | } | ||
334 | /* ping camera to be sure STV0680 is present */ | ||
335 | if ((i = stv_sndctrl (0, stv680, 0x88, 0x5678, buffer, 0x02)) != 0x02) | ||
336 | goto error; | ||
337 | if ((buffer[0] != 0x56) || (buffer[1] != 0x78)) { | ||
338 | PDEBUG (1, "STV(e): camera ping failed!!"); | ||
339 | goto error; | ||
340 | } | ||
341 | |||
342 | /* get camera descriptor */ | ||
343 | if ((i = stv_sndctrl (2, stv680, 0x06, 0x0200, buffer, 0x09)) != 0x09) | ||
344 | goto error; | ||
345 | i = stv_sndctrl (2, stv680, 0x06, 0x0200, buffer, 0x22); | ||
346 | if (!(i >= 0) && (buffer[7] == 0xa0) && (buffer[8] == 0x23)) { | ||
347 | PDEBUG (1, "STV(e): Could not get descriptor 0200."); | ||
348 | goto error; | ||
349 | } | ||
350 | if ((i = stv_sndctrl (0, stv680, 0x8a, 0, buffer, 0x02)) != 0x02) | ||
351 | goto error; | ||
352 | if ((i = stv_sndctrl (0, stv680, 0x8b, 0, buffer, 0x24)) != 0x24) | ||
353 | goto error; | ||
354 | if ((i = stv_sndctrl (0, stv680, 0x85, 0, buffer, 0x10)) != 0x10) | ||
355 | goto error; | ||
356 | |||
357 | stv680->SupportedModes = buffer[7]; | ||
358 | i = stv680->SupportedModes; | ||
359 | stv680->CIF = 0; | ||
360 | stv680->VGA = 0; | ||
361 | stv680->QVGA = 0; | ||
362 | if (i & 1) | ||
363 | stv680->CIF = 1; | ||
364 | if (i & 2) | ||
365 | stv680->VGA = 1; | ||
366 | if (i & 8) | ||
367 | stv680->QVGA = 1; | ||
368 | if (stv680->SupportedModes == 0) { | ||
369 | PDEBUG (0, "STV(e): There are NO supported STV680 modes!!"); | ||
370 | i = -1; | ||
371 | goto error; | ||
372 | } else { | ||
373 | if (stv680->CIF) | ||
374 | PDEBUG (0, "STV(i): CIF is supported"); | ||
375 | if (stv680->QVGA) | ||
376 | PDEBUG (0, "STV(i): QVGA is supported"); | ||
377 | } | ||
378 | /* FW rev, ASIC rev, sensor ID */ | ||
379 | PDEBUG (1, "STV(i): Firmware rev is %i.%i", buffer[0], buffer[1]); | ||
380 | PDEBUG (1, "STV(i): ASIC rev is %i.%i", buffer[2], buffer[3]); | ||
381 | PDEBUG (1, "STV(i): Sensor ID is %i", (buffer[4]*16) + (buffer[5]>>4)); | ||
382 | |||
383 | /* set alternate interface 1 */ | ||
384 | if ((i = stv_set_config (stv680, 1, 0, 1)) < 0) | ||
385 | goto error; | ||
386 | |||
387 | if ((i = stv_sndctrl (0, stv680, 0x85, 0, buffer, 0x10)) != 0x10) | ||
388 | goto error; | ||
389 | if ((i = stv_sndctrl (0, stv680, 0x8d, 0, buffer, 0x08)) != 0x08) | ||
390 | goto error; | ||
391 | i = buffer[3]; | ||
392 | PDEBUG (0, "STV(i): Camera has %i pictures.", i); | ||
393 | |||
394 | /* get current mode */ | ||
395 | if ((i = stv_sndctrl (0, stv680, 0x87, 0, buffer, 0x08)) != 0x08) | ||
396 | goto error; | ||
397 | stv680->origMode = buffer[0]; /* 01 = VGA, 03 = QVGA, 00 = CIF */ | ||
398 | |||
399 | /* This will attemp CIF mode, if supported. If not, set to QVGA */ | ||
400 | memset (buffer, 0, 8); | ||
401 | if (stv680->CIF) | ||
402 | buffer[0] = 0x00; | ||
403 | else if (stv680->QVGA) | ||
404 | buffer[0] = 0x03; | ||
405 | if ((i = stv_sndctrl (3, stv680, 0x07, 0x0100, buffer, 0x08)) != 0x08) { | ||
406 | PDEBUG (0, "STV(i): Set_Camera_Mode failed"); | ||
407 | i = -1; | ||
408 | goto error; | ||
409 | } | ||
410 | buffer[0] = 0xf0; | ||
411 | stv_sndctrl (0, stv680, 0x87, 0, buffer, 0x08); | ||
412 | if (((stv680->CIF == 1) && (buffer[0] != 0x00)) || ((stv680->QVGA == 1) && (buffer[0] != 0x03))) { | ||
413 | PDEBUG (0, "STV(e): Error setting camera video mode!"); | ||
414 | i = -1; | ||
415 | goto error; | ||
416 | } else { | ||
417 | if (buffer[0] == 0) { | ||
418 | stv680->VideoMode = 0x0000; | ||
419 | PDEBUG (0, "STV(i): Video Mode set to CIF"); | ||
420 | } | ||
421 | if (buffer[0] == 0x03) { | ||
422 | stv680->VideoMode = 0x0300; | ||
423 | PDEBUG (0, "STV(i): Video Mode set to QVGA"); | ||
424 | } | ||
425 | } | ||
426 | if ((i = stv_sndctrl (0, stv680, 0x8f, 0, buffer, 0x10)) != 0x10) | ||
427 | goto error; | ||
428 | bufsize = (buffer[0] << 24) | (buffer[1] << 16) | (buffer[2] << 8) | (buffer[3]); | ||
429 | stv680->cwidth = (buffer[4] << 8) | (buffer[5]); /* ->camera = 322, 356, 644 */ | ||
430 | stv680->cheight = (buffer[6] << 8) | (buffer[7]); /* ->camera = 242, 292, 484 */ | ||
431 | stv680->origGain = buffer[12]; | ||
432 | |||
433 | goto exit; | ||
434 | |||
435 | error: | ||
436 | i = stv_sndctrl (0, stv680, 0x80, 0, buffer, 0x02); /* Get Last Error */ | ||
437 | PDEBUG (1, "STV(i): last error: %i, command = 0x%x", buffer[0], buffer[1]); | ||
438 | kfree (buffer); | ||
439 | return -1; | ||
440 | |||
441 | exit: | ||
442 | kfree (buffer); | ||
443 | |||
444 | /* video = 320x240, 352x288 */ | ||
445 | if (stv680->CIF == 1) { | ||
446 | stv680->maxwidth = 352; | ||
447 | stv680->maxheight = 288; | ||
448 | stv680->vwidth = 352; | ||
449 | stv680->vheight = 288; | ||
450 | } | ||
451 | if (stv680->QVGA == 1) { | ||
452 | stv680->maxwidth = 320; | ||
453 | stv680->maxheight = 240; | ||
454 | stv680->vwidth = 320; | ||
455 | stv680->vheight = 240; | ||
456 | } | ||
457 | |||
458 | stv680->rawbufsize = bufsize; /* must be ./. by 8 */ | ||
459 | stv680->maxframesize = bufsize * 3; /* RGB size */ | ||
460 | PDEBUG (2, "STV(i): cwidth = %i, cheight = %i", stv680->cwidth, stv680->cheight); | ||
461 | PDEBUG (1, "STV(i): width = %i, height = %i, rawbufsize = %li", stv680->vwidth, stv680->vheight, stv680->rawbufsize); | ||
462 | |||
463 | /* some default values */ | ||
464 | stv680->bulk_in_endpointAddr = 0x82; | ||
465 | stv680->dropped = 0; | ||
466 | stv680->error = 0; | ||
467 | stv680->framecount = 0; | ||
468 | stv680->readcount = 0; | ||
469 | stv680->streaming = 0; | ||
470 | /* bright, white, colour, hue, contrast are set by software, not in stv0680 */ | ||
471 | stv680->brightness = 32767; | ||
472 | stv680->chgbright = 0; | ||
473 | stv680->whiteness = 0; /* only for greyscale */ | ||
474 | stv680->colour = 32767; | ||
475 | stv680->contrast = 32767; | ||
476 | stv680->hue = 32767; | ||
477 | stv680->palette = STV_VIDEO_PALETTE; | ||
478 | stv680->depth = 24; /* rgb24 bits */ | ||
479 | if ((swapRGB_on == 0) && (swapRGB == 0)) | ||
480 | PDEBUG (1, "STV(i): swapRGB is (auto) OFF"); | ||
481 | else if ((swapRGB_on == 0) && (swapRGB == 1)) | ||
482 | PDEBUG (1, "STV(i): swapRGB is (auto) ON"); | ||
483 | else if (swapRGB_on == 1) | ||
484 | PDEBUG (1, "STV(i): swapRGB is (forced) ON"); | ||
485 | else if (swapRGB_on == -1) | ||
486 | PDEBUG (1, "STV(i): swapRGB is (forced) OFF"); | ||
487 | |||
488 | if (stv_set_video_mode (stv680) < 0) { | ||
489 | PDEBUG (0, "STV(e): Could not set video mode in stv_init"); | ||
490 | return -1; | ||
491 | } | ||
492 | |||
493 | return 0; | ||
494 | } | ||
495 | |||
496 | /***************** last of pencam routines *******************/ | ||
497 | |||
498 | /**************************************************************************** | ||
499 | * sysfs | ||
500 | ***************************************************************************/ | ||
501 | #define stv680_file(name, variable, field) \ | ||
502 | static ssize_t show_##name(struct class_device *class_dev, char *buf) \ | ||
503 | { \ | ||
504 | struct video_device *vdev = to_video_device(class_dev); \ | ||
505 | struct usb_stv *stv = video_get_drvdata(vdev); \ | ||
506 | return sprintf(buf, field, stv->variable); \ | ||
507 | } \ | ||
508 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_##name, NULL); | ||
509 | |||
510 | stv680_file(model, camera_name, "%s\n"); | ||
511 | stv680_file(in_use, user, "%d\n"); | ||
512 | stv680_file(streaming, streaming, "%d\n"); | ||
513 | stv680_file(palette, palette, "%i\n"); | ||
514 | stv680_file(frames_total, readcount, "%d\n"); | ||
515 | stv680_file(frames_read, framecount, "%d\n"); | ||
516 | stv680_file(packets_dropped, dropped, "%d\n"); | ||
517 | stv680_file(decoding_errors, error, "%d\n"); | ||
518 | |||
519 | static void stv680_create_sysfs_files(struct video_device *vdev) | ||
520 | { | ||
521 | video_device_create_file(vdev, &class_device_attr_model); | ||
522 | video_device_create_file(vdev, &class_device_attr_in_use); | ||
523 | video_device_create_file(vdev, &class_device_attr_streaming); | ||
524 | video_device_create_file(vdev, &class_device_attr_palette); | ||
525 | video_device_create_file(vdev, &class_device_attr_frames_total); | ||
526 | video_device_create_file(vdev, &class_device_attr_frames_read); | ||
527 | video_device_create_file(vdev, &class_device_attr_packets_dropped); | ||
528 | video_device_create_file(vdev, &class_device_attr_decoding_errors); | ||
529 | } | ||
530 | |||
531 | static void stv680_remove_sysfs_files(struct video_device *vdev) | ||
532 | { | ||
533 | video_device_remove_file(vdev, &class_device_attr_model); | ||
534 | video_device_remove_file(vdev, &class_device_attr_in_use); | ||
535 | video_device_remove_file(vdev, &class_device_attr_streaming); | ||
536 | video_device_remove_file(vdev, &class_device_attr_palette); | ||
537 | video_device_remove_file(vdev, &class_device_attr_frames_total); | ||
538 | video_device_remove_file(vdev, &class_device_attr_frames_read); | ||
539 | video_device_remove_file(vdev, &class_device_attr_packets_dropped); | ||
540 | video_device_remove_file(vdev, &class_device_attr_decoding_errors); | ||
541 | } | ||
542 | |||
543 | /******************************************************************** | ||
544 | * Camera control | ||
545 | *******************************************************************/ | ||
546 | |||
547 | static int stv680_get_pict (struct usb_stv *stv680, struct video_picture *p) | ||
548 | { | ||
549 | /* This sets values for v4l interface. max/min = 65535/0 */ | ||
550 | |||
551 | p->brightness = stv680->brightness; | ||
552 | p->whiteness = stv680->whiteness; /* greyscale */ | ||
553 | p->colour = stv680->colour; | ||
554 | p->contrast = stv680->contrast; | ||
555 | p->hue = stv680->hue; | ||
556 | p->palette = stv680->palette; | ||
557 | p->depth = stv680->depth; | ||
558 | return 0; | ||
559 | } | ||
560 | |||
561 | static int stv680_set_pict (struct usb_stv *stv680, struct video_picture *p) | ||
562 | { | ||
563 | /* See above stv680_get_pict */ | ||
564 | |||
565 | if (p->palette != STV_VIDEO_PALETTE) { | ||
566 | PDEBUG (2, "STV(e): Palette set error in _set_pic"); | ||
567 | return 1; | ||
568 | } | ||
569 | |||
570 | if (stv680->brightness != p->brightness) { | ||
571 | stv680->chgbright = 1; | ||
572 | stv680->brightness = p->brightness; | ||
573 | } | ||
574 | |||
575 | stv680->whiteness = p->whiteness; /* greyscale */ | ||
576 | stv680->colour = p->colour; | ||
577 | stv680->contrast = p->contrast; | ||
578 | stv680->hue = p->hue; | ||
579 | stv680->palette = p->palette; | ||
580 | stv680->depth = p->depth; | ||
581 | |||
582 | return 0; | ||
583 | } | ||
584 | |||
585 | static void stv680_video_irq (struct urb *urb, struct pt_regs *regs) | ||
586 | { | ||
587 | struct usb_stv *stv680 = urb->context; | ||
588 | int length = urb->actual_length; | ||
589 | |||
590 | if (length < stv680->rawbufsize) | ||
591 | PDEBUG (2, "STV(i): Lost data in transfer: exp %li, got %i", stv680->rawbufsize, length); | ||
592 | |||
593 | /* ohoh... */ | ||
594 | if (!stv680->streaming) | ||
595 | return; | ||
596 | |||
597 | if (!stv680->udev) { | ||
598 | PDEBUG (0, "STV(e): device vapourished in video_irq"); | ||
599 | return; | ||
600 | } | ||
601 | |||
602 | /* 0 sized packets happen if we are to fast, but sometimes the camera | ||
603 | keeps sending them forever... | ||
604 | */ | ||
605 | if (length && !urb->status) { | ||
606 | stv680->nullpackets = 0; | ||
607 | switch (stv680->scratch[stv680->scratch_next].state) { | ||
608 | case BUFFER_READY: | ||
609 | case BUFFER_BUSY: | ||
610 | stv680->dropped++; | ||
611 | break; | ||
612 | |||
613 | case BUFFER_UNUSED: | ||
614 | memcpy (stv680->scratch[stv680->scratch_next].data, | ||
615 | (unsigned char *) urb->transfer_buffer, length); | ||
616 | stv680->scratch[stv680->scratch_next].state = BUFFER_READY; | ||
617 | stv680->scratch[stv680->scratch_next].length = length; | ||
618 | if (waitqueue_active (&stv680->wq)) { | ||
619 | wake_up_interruptible (&stv680->wq); | ||
620 | } | ||
621 | stv680->scratch_overflow = 0; | ||
622 | stv680->scratch_next++; | ||
623 | if (stv680->scratch_next >= STV680_NUMSCRATCH) | ||
624 | stv680->scratch_next = 0; | ||
625 | break; | ||
626 | } /* switch */ | ||
627 | } else { | ||
628 | stv680->nullpackets++; | ||
629 | if (stv680->nullpackets > STV680_MAX_NULLPACKETS) { | ||
630 | if (waitqueue_active (&stv680->wq)) { | ||
631 | wake_up_interruptible (&stv680->wq); | ||
632 | } | ||
633 | } | ||
634 | } /* if - else */ | ||
635 | |||
636 | /* Resubmit urb for new data */ | ||
637 | urb->status = 0; | ||
638 | urb->dev = stv680->udev; | ||
639 | if (usb_submit_urb (urb, GFP_ATOMIC)) | ||
640 | PDEBUG (0, "STV(e): urb burned down in video irq"); | ||
641 | return; | ||
642 | } /* _video_irq */ | ||
643 | |||
644 | static int stv680_start_stream (struct usb_stv *stv680) | ||
645 | { | ||
646 | struct urb *urb; | ||
647 | int err = 0, i; | ||
648 | |||
649 | stv680->streaming = 1; | ||
650 | |||
651 | /* Do some memory allocation */ | ||
652 | for (i = 0; i < STV680_NUMFRAMES; i++) { | ||
653 | stv680->frame[i].data = stv680->fbuf + i * stv680->maxframesize; | ||
654 | stv680->frame[i].curpix = 0; | ||
655 | } | ||
656 | /* packet size = 4096 */ | ||
657 | for (i = 0; i < STV680_NUMSBUF; i++) { | ||
658 | stv680->sbuf[i].data = kmalloc (stv680->rawbufsize, GFP_KERNEL); | ||
659 | if (stv680->sbuf[i].data == NULL) { | ||
660 | PDEBUG (0, "STV(e): Could not kmalloc raw data buffer %i", i); | ||
661 | return -1; | ||
662 | } | ||
663 | } | ||
664 | |||
665 | stv680->scratch_next = 0; | ||
666 | stv680->scratch_use = 0; | ||
667 | stv680->scratch_overflow = 0; | ||
668 | for (i = 0; i < STV680_NUMSCRATCH; i++) { | ||
669 | stv680->scratch[i].data = kmalloc (stv680->rawbufsize, GFP_KERNEL); | ||
670 | if (stv680->scratch[i].data == NULL) { | ||
671 | PDEBUG (0, "STV(e): Could not kmalloc raw scratch buffer %i", i); | ||
672 | return -1; | ||
673 | } | ||
674 | stv680->scratch[i].state = BUFFER_UNUSED; | ||
675 | } | ||
676 | |||
677 | for (i = 0; i < STV680_NUMSBUF; i++) { | ||
678 | urb = usb_alloc_urb (0, GFP_KERNEL); | ||
679 | if (!urb) | ||
680 | return -ENOMEM; | ||
681 | |||
682 | /* sbuf is urb->transfer_buffer, later gets memcpyed to scratch */ | ||
683 | usb_fill_bulk_urb (urb, stv680->udev, | ||
684 | usb_rcvbulkpipe (stv680->udev, stv680->bulk_in_endpointAddr), | ||
685 | stv680->sbuf[i].data, stv680->rawbufsize, | ||
686 | stv680_video_irq, stv680); | ||
687 | stv680->urb[i] = urb; | ||
688 | err = usb_submit_urb (stv680->urb[i], GFP_KERNEL); | ||
689 | if (err) | ||
690 | PDEBUG (0, "STV(e): urb burned down in start stream"); | ||
691 | } /* i STV680_NUMSBUF */ | ||
692 | |||
693 | stv680->framecount = 0; | ||
694 | return 0; | ||
695 | } | ||
696 | |||
697 | static int stv680_stop_stream (struct usb_stv *stv680) | ||
698 | { | ||
699 | int i; | ||
700 | |||
701 | if (!stv680->streaming || !stv680->udev) | ||
702 | return 1; | ||
703 | |||
704 | stv680->streaming = 0; | ||
705 | |||
706 | for (i = 0; i < STV680_NUMSBUF; i++) | ||
707 | if (stv680->urb[i]) { | ||
708 | usb_kill_urb (stv680->urb[i]); | ||
709 | usb_free_urb (stv680->urb[i]); | ||
710 | stv680->urb[i] = NULL; | ||
711 | kfree (stv680->sbuf[i].data); | ||
712 | } | ||
713 | for (i = 0; i < STV680_NUMSCRATCH; i++) { | ||
714 | kfree (stv680->scratch[i].data); | ||
715 | stv680->scratch[i].data = NULL; | ||
716 | } | ||
717 | |||
718 | return 0; | ||
719 | } | ||
720 | |||
721 | static int stv680_set_size (struct usb_stv *stv680, int width, int height) | ||
722 | { | ||
723 | int wasstreaming = stv680->streaming; | ||
724 | |||
725 | /* Check to see if we need to change */ | ||
726 | if ((stv680->vwidth == width) && (stv680->vheight == height)) | ||
727 | return 0; | ||
728 | |||
729 | PDEBUG (1, "STV(i): size request for %i x %i", width, height); | ||
730 | /* Check for a valid mode */ | ||
731 | if ((!width || !height) || ((width & 1) || (height & 1))) { | ||
732 | PDEBUG (1, "STV(e): set_size error: request: v.width = %i, v.height = %i actual: stv.width = %i, stv.height = %i", width, height, stv680->vwidth, stv680->vheight); | ||
733 | return 1; | ||
734 | } | ||
735 | |||
736 | if ((width < (stv680->maxwidth / 2)) || (height < (stv680->maxheight / 2))) { | ||
737 | width = stv680->maxwidth / 2; | ||
738 | height = stv680->maxheight / 2; | ||
739 | } else if ((width >= 158) && (width <= 166) && (stv680->QVGA == 1)) { | ||
740 | width = 160; | ||
741 | height = 120; | ||
742 | } else if ((width >= 172) && (width <= 180) && (stv680->CIF == 1)) { | ||
743 | width = 176; | ||
744 | height = 144; | ||
745 | } else if ((width >= 318) && (width <= 350) && (stv680->QVGA == 1)) { | ||
746 | width = 320; | ||
747 | height = 240; | ||
748 | } else if ((width >= 350) && (width <= 358) && (stv680->CIF == 1)) { | ||
749 | width = 352; | ||
750 | height = 288; | ||
751 | } else { | ||
752 | PDEBUG (1, "STV(e): request for non-supported size: request: v.width = %i, v.height = %i actual: stv.width = %i, stv.height = %i", width, height, stv680->vwidth, stv680->vheight); | ||
753 | return 1; | ||
754 | } | ||
755 | |||
756 | /* Stop a current stream and start it again at the new size */ | ||
757 | if (wasstreaming) | ||
758 | stv680_stop_stream (stv680); | ||
759 | stv680->vwidth = width; | ||
760 | stv680->vheight = height; | ||
761 | PDEBUG (1, "STV(i): size set to %i x %i", stv680->vwidth, stv680->vheight); | ||
762 | if (wasstreaming) | ||
763 | stv680_start_stream (stv680); | ||
764 | |||
765 | return 0; | ||
766 | } | ||
767 | |||
768 | /********************************************************************** | ||
769 | * Video Decoding | ||
770 | **********************************************************************/ | ||
771 | |||
772 | /******* routines from the pencam program; hey, they work! ********/ | ||
773 | |||
774 | /* | ||
775 | * STV0680 Vision Camera Chipset Driver | ||
776 | * Copyright (C) 2000 Adam Harrison <adam@antispin.org> | ||
777 | */ | ||
778 | |||
779 | #define RED 0 | ||
780 | #define GREEN 1 | ||
781 | #define BLUE 2 | ||
782 | #define AD(x, y, w) (((y)*(w)+(x))*3) | ||
783 | |||
784 | static void bayer_unshuffle (struct usb_stv *stv680, struct stv680_scratch *buffer) | ||
785 | { | ||
786 | int x, y, i; | ||
787 | int w = stv680->cwidth; | ||
788 | int vw = stv680->cwidth, vh = stv680->cheight; | ||
789 | unsigned int p = 0; | ||
790 | int colour = 0, bayer = 0; | ||
791 | unsigned char *raw = buffer->data; | ||
792 | struct stv680_frame *frame = &stv680->frame[stv680->curframe]; | ||
793 | unsigned char *output = frame->data; | ||
794 | unsigned char *temp = frame->data; | ||
795 | int offset = buffer->offset; | ||
796 | |||
797 | if (frame->curpix == 0) { | ||
798 | if (frame->grabstate == FRAME_READY) { | ||
799 | frame->grabstate = FRAME_GRABBING; | ||
800 | } | ||
801 | } | ||
802 | if (offset != frame->curpix) { /* Regard frame as lost :( */ | ||
803 | frame->curpix = 0; | ||
804 | stv680->error++; | ||
805 | return; | ||
806 | } | ||
807 | |||
808 | if ((stv680->vwidth == 320) || (stv680->vwidth == 160)) { | ||
809 | vw = 320; | ||
810 | vh = 240; | ||
811 | } | ||
812 | if ((stv680->vwidth == 352) || (stv680->vwidth == 176)) { | ||
813 | vw = 352; | ||
814 | vh = 288; | ||
815 | } | ||
816 | |||
817 | memset (output, 0, 3 * vw * vh); /* clear output matrix. */ | ||
818 | |||
819 | for (y = 0; y < vh; y++) { | ||
820 | for (x = 0; x < vw; x++) { | ||
821 | if (x & 1) | ||
822 | p = *(raw + y * w + (x >> 1)); | ||
823 | else | ||
824 | p = *(raw + y * w + (x >> 1) + (w >> 1)); | ||
825 | |||
826 | if (y & 1) | ||
827 | bayer = 2; | ||
828 | else | ||
829 | bayer = 0; | ||
830 | if (x & 1) | ||
831 | bayer++; | ||
832 | |||
833 | switch (bayer) { | ||
834 | case 0: | ||
835 | case 3: | ||
836 | colour = 1; | ||
837 | break; | ||
838 | case 1: | ||
839 | colour = 0; | ||
840 | break; | ||
841 | case 2: | ||
842 | colour = 2; | ||
843 | break; | ||
844 | } | ||
845 | i = (y * vw + x) * 3; | ||
846 | *(output + i + colour) = (unsigned char) p; | ||
847 | } /* for x */ | ||
848 | |||
849 | } /* for y */ | ||
850 | |||
851 | /****** gamma correction plus hardcoded white balance */ | ||
852 | /* Thanks to Alexander Schwartx <alexander.schwartx@gmx.net> for this code. | ||
853 | Correction values red[], green[], blue[], are generated by | ||
854 | (pow(i/256.0, GAMMA)*255.0)*white balanceRGB where GAMMA=0.55, 1<i<255. | ||
855 | White balance (RGB)= 1.0, 1.17, 1.48. Values are calculated as double float and | ||
856 | converted to unsigned char. Values are in stv680.h */ | ||
857 | |||
858 | for (y = 0; y < vh; y++) { | ||
859 | for (x = 0; x < vw; x++) { | ||
860 | i = (y * vw + x) * 3; | ||
861 | *(output + i) = red[*(output + i)]; | ||
862 | *(output + i + 1) = green[*(output + i + 1)]; | ||
863 | *(output + i + 2) = blue[*(output + i + 2)]; | ||
864 | } | ||
865 | } | ||
866 | |||
867 | /****** bayer demosaic ******/ | ||
868 | for (y = 1; y < (vh - 1); y++) { | ||
869 | for (x = 1; x < (vw - 1); x++) { /* work out pixel type */ | ||
870 | if (y & 1) | ||
871 | bayer = 0; | ||
872 | else | ||
873 | bayer = 2; | ||
874 | if (!(x & 1)) | ||
875 | bayer++; | ||
876 | |||
877 | switch (bayer) { | ||
878 | case 0: /* green. blue lr, red tb */ | ||
879 | *(output + AD (x, y, vw) + BLUE) = ((int) *(output + AD (x - 1, y, vw) + BLUE) + (int) *(output + AD (x + 1, y, vw) + BLUE)) >> 1; | ||
880 | *(output + AD (x, y, vw) + RED) = ((int) *(output + AD (x, y - 1, vw) + RED) + (int) *(output + AD (x, y + 1, vw) + RED)) >> 1; | ||
881 | break; | ||
882 | |||
883 | case 1: /* blue. green lrtb, red diagonals */ | ||
884 | *(output + AD (x, y, vw) + GREEN) = ((int) *(output + AD (x - 1, y, vw) + GREEN) + (int) *(output + AD (x + 1, y, vw) + GREEN) + (int) *(output + AD (x, y - 1, vw) + GREEN) + (int) *(output + AD (x, y + 1, vw) + GREEN)) >> 2; | ||
885 | *(output + AD (x, y, vw) + RED) = ((int) *(output + AD (x - 1, y - 1, vw) + RED) + (int) *(output + AD (x - 1, y + 1, vw) + RED) + (int) *(output + AD (x + 1, y - 1, vw) + RED) + (int) *(output + AD (x + 1, y + 1, vw) + RED)) >> 2; | ||
886 | break; | ||
887 | |||
888 | case 2: /* red. green lrtb, blue diagonals */ | ||
889 | *(output + AD (x, y, vw) + GREEN) = ((int) *(output + AD (x - 1, y, vw) + GREEN) + (int) *(output + AD (x + 1, y, vw) + GREEN) + (int) *(output + AD (x, y - 1, vw) + GREEN) + (int) *(output + AD (x, y + 1, vw) + GREEN)) >> 2; | ||
890 | *(output + AD (x, y, vw) + BLUE) = ((int) *(output + AD (x - 1, y - 1, vw) + BLUE) + (int) *(output + AD (x + 1, y - 1, vw) + BLUE) + (int) *(output + AD (x - 1, y + 1, vw) + BLUE) + (int) *(output + AD (x + 1, y + 1, vw) + BLUE)) >> 2; | ||
891 | break; | ||
892 | |||
893 | case 3: /* green. red lr, blue tb */ | ||
894 | *(output + AD (x, y, vw) + RED) = ((int) *(output + AD (x - 1, y, vw) + RED) + (int) *(output + AD (x + 1, y, vw) + RED)) >> 1; | ||
895 | *(output + AD (x, y, vw) + BLUE) = ((int) *(output + AD (x, y - 1, vw) + BLUE) + (int) *(output + AD (x, y + 1, vw) + BLUE)) >> 1; | ||
896 | break; | ||
897 | } /* switch */ | ||
898 | } /* for x */ | ||
899 | } /* for y - end demosaic */ | ||
900 | |||
901 | /* fix top and bottom row, left and right side */ | ||
902 | i = vw * 3; | ||
903 | memcpy (output, (output + i), i); | ||
904 | memcpy ((output + (vh * i)), (output + ((vh - 1) * i)), i); | ||
905 | for (y = 0; y < vh; y++) { | ||
906 | i = y * vw * 3; | ||
907 | memcpy ((output + i), (output + i + 3), 3); | ||
908 | memcpy ((output + i + (vw * 3)), (output + i + (vw - 1) * 3), 3); | ||
909 | } | ||
910 | |||
911 | /* process all raw data, then trim to size if necessary */ | ||
912 | if ((stv680->vwidth == 160) || (stv680->vwidth == 176)) { | ||
913 | i = 0; | ||
914 | for (y = 0; y < vh; y++) { | ||
915 | if (!(y & 1)) { | ||
916 | for (x = 0; x < vw; x++) { | ||
917 | p = (y * vw + x) * 3; | ||
918 | if (!(x & 1)) { | ||
919 | *(output + i) = *(output + p); | ||
920 | *(output + i + 1) = *(output + p + 1); | ||
921 | *(output + i + 2) = *(output + p + 2); | ||
922 | i += 3; | ||
923 | } | ||
924 | } /* for x */ | ||
925 | } | ||
926 | } /* for y */ | ||
927 | } | ||
928 | /* reset to proper width */ | ||
929 | if ((stv680->vwidth == 160)) { | ||
930 | vw = 160; | ||
931 | vh = 120; | ||
932 | } | ||
933 | if ((stv680->vwidth == 176)) { | ||
934 | vw = 176; | ||
935 | vh = 144; | ||
936 | } | ||
937 | |||
938 | /* output is RGB; some programs want BGR */ | ||
939 | /* swapRGB_on=0 -> program decides; swapRGB_on=1, always swap */ | ||
940 | /* swapRGB_on=-1, never swap */ | ||
941 | if (((swapRGB == 1) && (swapRGB_on != -1)) || (swapRGB_on == 1)) { | ||
942 | for (y = 0; y < vh; y++) { | ||
943 | for (x = 0; x < vw; x++) { | ||
944 | i = (y * vw + x) * 3; | ||
945 | *(temp) = *(output + i); | ||
946 | *(output + i) = *(output + i + 2); | ||
947 | *(output + i + 2) = *(temp); | ||
948 | } | ||
949 | } | ||
950 | } | ||
951 | /* brightness */ | ||
952 | if (stv680->chgbright == 1) { | ||
953 | if (stv680->brightness >= 32767) { | ||
954 | p = (stv680->brightness - 32767) / 256; | ||
955 | for (x = 0; x < (vw * vh * 3); x++) { | ||
956 | if ((*(output + x) + (unsigned char) p) > 255) | ||
957 | *(output + x) = 255; | ||
958 | else | ||
959 | *(output + x) += (unsigned char) p; | ||
960 | } /* for */ | ||
961 | } else { | ||
962 | p = (32767 - stv680->brightness) / 256; | ||
963 | for (x = 0; x < (vw * vh * 3); x++) { | ||
964 | if ((unsigned char) p > *(output + x)) | ||
965 | *(output + x) = 0; | ||
966 | else | ||
967 | *(output + x) -= (unsigned char) p; | ||
968 | } /* for */ | ||
969 | } /* else */ | ||
970 | } | ||
971 | /* if */ | ||
972 | frame->curpix = 0; | ||
973 | frame->curlinepix = 0; | ||
974 | frame->grabstate = FRAME_DONE; | ||
975 | stv680->framecount++; | ||
976 | stv680->readcount++; | ||
977 | if (stv680->frame[(stv680->curframe + 1) & (STV680_NUMFRAMES - 1)].grabstate == FRAME_READY) { | ||
978 | stv680->curframe = (stv680->curframe + 1) & (STV680_NUMFRAMES - 1); | ||
979 | } | ||
980 | |||
981 | } /* bayer_unshuffle */ | ||
982 | |||
983 | /******* end routines from the pencam program *********/ | ||
984 | |||
985 | static int stv680_newframe (struct usb_stv *stv680, int framenr) | ||
986 | { | ||
987 | int errors = 0; | ||
988 | |||
989 | while (stv680->streaming && (stv680->frame[framenr].grabstate == FRAME_READY || stv680->frame[framenr].grabstate == FRAME_GRABBING)) { | ||
990 | if (!stv680->frame[framenr].curpix) { | ||
991 | errors++; | ||
992 | } | ||
993 | wait_event_interruptible (stv680->wq, (stv680->scratch[stv680->scratch_use].state == BUFFER_READY)); | ||
994 | |||
995 | if (stv680->nullpackets > STV680_MAX_NULLPACKETS) { | ||
996 | stv680->nullpackets = 0; | ||
997 | PDEBUG (2, "STV(i): too many null length packets, restarting capture"); | ||
998 | stv680_stop_stream (stv680); | ||
999 | stv680_start_stream (stv680); | ||
1000 | } else { | ||
1001 | if (stv680->scratch[stv680->scratch_use].state != BUFFER_READY) { | ||
1002 | stv680->frame[framenr].grabstate = FRAME_ERROR; | ||
1003 | PDEBUG (2, "STV(e): FRAME_ERROR in _newframe"); | ||
1004 | return -EIO; | ||
1005 | } | ||
1006 | stv680->scratch[stv680->scratch_use].state = BUFFER_BUSY; | ||
1007 | |||
1008 | bayer_unshuffle (stv680, &stv680->scratch[stv680->scratch_use]); | ||
1009 | |||
1010 | stv680->scratch[stv680->scratch_use].state = BUFFER_UNUSED; | ||
1011 | stv680->scratch_use++; | ||
1012 | if (stv680->scratch_use >= STV680_NUMSCRATCH) | ||
1013 | stv680->scratch_use = 0; | ||
1014 | if (errors > STV680_MAX_ERRORS) { | ||
1015 | errors = 0; | ||
1016 | PDEBUG (2, "STV(i): too many errors, restarting capture"); | ||
1017 | stv680_stop_stream (stv680); | ||
1018 | stv680_start_stream (stv680); | ||
1019 | } | ||
1020 | } /* else */ | ||
1021 | } /* while */ | ||
1022 | return 0; | ||
1023 | } | ||
1024 | |||
1025 | /********************************************************************* | ||
1026 | * Video4Linux | ||
1027 | *********************************************************************/ | ||
1028 | |||
1029 | static int stv_open (struct inode *inode, struct file *file) | ||
1030 | { | ||
1031 | struct video_device *dev = video_devdata(file); | ||
1032 | struct usb_stv *stv680 = video_get_drvdata(dev); | ||
1033 | int err = 0; | ||
1034 | |||
1035 | /* we are called with the BKL held */ | ||
1036 | stv680->user = 1; | ||
1037 | err = stv_init (stv680); /* main initialization routine for camera */ | ||
1038 | |||
1039 | if (err >= 0) { | ||
1040 | stv680->fbuf = rvmalloc (stv680->maxframesize * STV680_NUMFRAMES); | ||
1041 | if (!stv680->fbuf) { | ||
1042 | PDEBUG (0, "STV(e): Could not rvmalloc frame bufer"); | ||
1043 | err = -ENOMEM; | ||
1044 | } | ||
1045 | file->private_data = dev; | ||
1046 | } | ||
1047 | if (err) | ||
1048 | stv680->user = 0; | ||
1049 | |||
1050 | return err; | ||
1051 | } | ||
1052 | |||
1053 | static int stv_close (struct inode *inode, struct file *file) | ||
1054 | { | ||
1055 | struct video_device *dev = file->private_data; | ||
1056 | struct usb_stv *stv680 = video_get_drvdata(dev); | ||
1057 | int i; | ||
1058 | |||
1059 | for (i = 0; i < STV680_NUMFRAMES; i++) | ||
1060 | stv680->frame[i].grabstate = FRAME_UNUSED; | ||
1061 | if (stv680->streaming) | ||
1062 | stv680_stop_stream (stv680); | ||
1063 | |||
1064 | if ((i = stv_stop_video (stv680)) < 0) | ||
1065 | PDEBUG (1, "STV(e): stop_video failed in stv_close"); | ||
1066 | |||
1067 | rvfree (stv680->fbuf, stv680->maxframesize * STV680_NUMFRAMES); | ||
1068 | stv680->user = 0; | ||
1069 | |||
1070 | if (stv680->removed) { | ||
1071 | kfree (stv680); | ||
1072 | stv680 = NULL; | ||
1073 | PDEBUG (0, "STV(i): device unregistered"); | ||
1074 | } | ||
1075 | file->private_data = NULL; | ||
1076 | return 0; | ||
1077 | } | ||
1078 | |||
1079 | static int stv680_do_ioctl (struct inode *inode, struct file *file, | ||
1080 | unsigned int cmd, void *arg) | ||
1081 | { | ||
1082 | struct video_device *vdev = file->private_data; | ||
1083 | struct usb_stv *stv680 = video_get_drvdata(vdev); | ||
1084 | |||
1085 | if (!stv680->udev) | ||
1086 | return -EIO; | ||
1087 | |||
1088 | switch (cmd) { | ||
1089 | case VIDIOCGCAP:{ | ||
1090 | struct video_capability *b = arg; | ||
1091 | |||
1092 | strcpy (b->name, stv680->camera_name); | ||
1093 | b->type = VID_TYPE_CAPTURE; | ||
1094 | b->channels = 1; | ||
1095 | b->audios = 0; | ||
1096 | b->maxwidth = stv680->maxwidth; | ||
1097 | b->maxheight = stv680->maxheight; | ||
1098 | b->minwidth = stv680->maxwidth / 2; | ||
1099 | b->minheight = stv680->maxheight / 2; | ||
1100 | return 0; | ||
1101 | } | ||
1102 | case VIDIOCGCHAN:{ | ||
1103 | struct video_channel *v = arg; | ||
1104 | |||
1105 | if (v->channel != 0) | ||
1106 | return -EINVAL; | ||
1107 | v->flags = 0; | ||
1108 | v->tuners = 0; | ||
1109 | v->type = VIDEO_TYPE_CAMERA; | ||
1110 | strcpy (v->name, "STV Camera"); | ||
1111 | return 0; | ||
1112 | } | ||
1113 | case VIDIOCSCHAN:{ | ||
1114 | struct video_channel *v = arg; | ||
1115 | if (v->channel != 0) | ||
1116 | return -EINVAL; | ||
1117 | return 0; | ||
1118 | } | ||
1119 | case VIDIOCGPICT:{ | ||
1120 | struct video_picture *p = arg; | ||
1121 | |||
1122 | stv680_get_pict (stv680, p); | ||
1123 | return 0; | ||
1124 | } | ||
1125 | case VIDIOCSPICT:{ | ||
1126 | struct video_picture *p = arg; | ||
1127 | |||
1128 | if (stv680_set_pict (stv680, p)) | ||
1129 | return -EINVAL; | ||
1130 | return 0; | ||
1131 | } | ||
1132 | case VIDIOCSWIN:{ | ||
1133 | struct video_window *vw = arg; | ||
1134 | |||
1135 | if (vw->flags) | ||
1136 | return -EINVAL; | ||
1137 | if (vw->clipcount) | ||
1138 | return -EINVAL; | ||
1139 | if (vw->width != stv680->vwidth) { | ||
1140 | if (stv680_set_size (stv680, vw->width, vw->height)) { | ||
1141 | PDEBUG (2, "STV(e): failed (from user) set size in VIDIOCSWIN"); | ||
1142 | return -EINVAL; | ||
1143 | } | ||
1144 | } | ||
1145 | return 0; | ||
1146 | } | ||
1147 | case VIDIOCGWIN:{ | ||
1148 | struct video_window *vw = arg; | ||
1149 | |||
1150 | vw->x = 0; /* FIXME */ | ||
1151 | vw->y = 0; | ||
1152 | vw->chromakey = 0; | ||
1153 | vw->flags = 0; | ||
1154 | vw->clipcount = 0; | ||
1155 | vw->width = stv680->vwidth; | ||
1156 | vw->height = stv680->vheight; | ||
1157 | return 0; | ||
1158 | } | ||
1159 | case VIDIOCGMBUF:{ | ||
1160 | struct video_mbuf *vm = arg; | ||
1161 | int i; | ||
1162 | |||
1163 | memset (vm, 0, sizeof (*vm)); | ||
1164 | vm->size = STV680_NUMFRAMES * stv680->maxframesize; | ||
1165 | vm->frames = STV680_NUMFRAMES; | ||
1166 | for (i = 0; i < STV680_NUMFRAMES; i++) | ||
1167 | vm->offsets[i] = stv680->maxframesize * i; | ||
1168 | return 0; | ||
1169 | } | ||
1170 | case VIDIOCMCAPTURE:{ | ||
1171 | struct video_mmap *vm = arg; | ||
1172 | |||
1173 | if (vm->format != STV_VIDEO_PALETTE) { | ||
1174 | PDEBUG (2, "STV(i): VIDIOCMCAPTURE vm.format (%i) != VIDEO_PALETTE (%i)", | ||
1175 | vm->format, STV_VIDEO_PALETTE); | ||
1176 | if ((vm->format == 3) && (swapRGB_on == 0)) { | ||
1177 | PDEBUG (2, "STV(i): VIDIOCMCAPTURE swapRGB is (auto) ON"); | ||
1178 | /* this may fix those apps (e.g., xawtv) that want BGR */ | ||
1179 | swapRGB = 1; | ||
1180 | } | ||
1181 | return -EINVAL; | ||
1182 | } | ||
1183 | if (vm->frame >= STV680_NUMFRAMES) { | ||
1184 | PDEBUG (2, "STV(e): VIDIOCMCAPTURE vm.frame > NUMFRAMES"); | ||
1185 | return -EINVAL; | ||
1186 | } | ||
1187 | if ((stv680->frame[vm->frame].grabstate == FRAME_ERROR) | ||
1188 | || (stv680->frame[vm->frame].grabstate == FRAME_GRABBING)) { | ||
1189 | PDEBUG (2, "STV(e): VIDIOCMCAPTURE grabstate (%i) error", | ||
1190 | stv680->frame[vm->frame].grabstate); | ||
1191 | return -EBUSY; | ||
1192 | } | ||
1193 | /* Is this according to the v4l spec??? */ | ||
1194 | if (stv680->vwidth != vm->width) { | ||
1195 | if (stv680_set_size (stv680, vm->width, vm->height)) { | ||
1196 | PDEBUG (2, "STV(e): VIDIOCMCAPTURE set_size failed"); | ||
1197 | return -EINVAL; | ||
1198 | } | ||
1199 | } | ||
1200 | stv680->frame[vm->frame].grabstate = FRAME_READY; | ||
1201 | |||
1202 | if (!stv680->streaming) | ||
1203 | stv680_start_stream (stv680); | ||
1204 | |||
1205 | return 0; | ||
1206 | } | ||
1207 | case VIDIOCSYNC:{ | ||
1208 | int *frame = arg; | ||
1209 | int ret = 0; | ||
1210 | |||
1211 | if (*frame < 0 || *frame >= STV680_NUMFRAMES) { | ||
1212 | PDEBUG (2, "STV(e): Bad frame # in VIDIOCSYNC"); | ||
1213 | return -EINVAL; | ||
1214 | } | ||
1215 | ret = stv680_newframe (stv680, *frame); | ||
1216 | stv680->frame[*frame].grabstate = FRAME_UNUSED; | ||
1217 | return ret; | ||
1218 | } | ||
1219 | case VIDIOCGFBUF:{ | ||
1220 | struct video_buffer *vb = arg; | ||
1221 | |||
1222 | memset (vb, 0, sizeof (*vb)); | ||
1223 | return 0; | ||
1224 | } | ||
1225 | case VIDIOCKEY: | ||
1226 | return 0; | ||
1227 | case VIDIOCCAPTURE: | ||
1228 | { | ||
1229 | PDEBUG (2, "STV(e): VIDIOCCAPTURE failed"); | ||
1230 | return -EINVAL; | ||
1231 | } | ||
1232 | case VIDIOCSFBUF: | ||
1233 | case VIDIOCGTUNER: | ||
1234 | case VIDIOCSTUNER: | ||
1235 | case VIDIOCGFREQ: | ||
1236 | case VIDIOCSFREQ: | ||
1237 | case VIDIOCGAUDIO: | ||
1238 | case VIDIOCSAUDIO: | ||
1239 | return -EINVAL; | ||
1240 | default: | ||
1241 | return -ENOIOCTLCMD; | ||
1242 | } /* end switch */ | ||
1243 | |||
1244 | return 0; | ||
1245 | } | ||
1246 | |||
1247 | static int stv680_ioctl(struct inode *inode, struct file *file, | ||
1248 | unsigned int cmd, unsigned long arg) | ||
1249 | { | ||
1250 | return video_usercopy(inode, file, cmd, arg, stv680_do_ioctl); | ||
1251 | } | ||
1252 | |||
1253 | static int stv680_mmap (struct file *file, struct vm_area_struct *vma) | ||
1254 | { | ||
1255 | struct video_device *dev = file->private_data; | ||
1256 | struct usb_stv *stv680 = video_get_drvdata(dev); | ||
1257 | unsigned long start = vma->vm_start; | ||
1258 | unsigned long size = vma->vm_end-vma->vm_start; | ||
1259 | unsigned long page, pos; | ||
1260 | |||
1261 | down (&stv680->lock); | ||
1262 | |||
1263 | if (stv680->udev == NULL) { | ||
1264 | up (&stv680->lock); | ||
1265 | return -EIO; | ||
1266 | } | ||
1267 | if (size > (((STV680_NUMFRAMES * stv680->maxframesize) + PAGE_SIZE - 1) | ||
1268 | & ~(PAGE_SIZE - 1))) { | ||
1269 | up (&stv680->lock); | ||
1270 | return -EINVAL; | ||
1271 | } | ||
1272 | pos = (unsigned long) stv680->fbuf; | ||
1273 | while (size > 0) { | ||
1274 | page = vmalloc_to_pfn((void *)pos); | ||
1275 | if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) { | ||
1276 | up (&stv680->lock); | ||
1277 | return -EAGAIN; | ||
1278 | } | ||
1279 | start += PAGE_SIZE; | ||
1280 | pos += PAGE_SIZE; | ||
1281 | if (size > PAGE_SIZE) | ||
1282 | size -= PAGE_SIZE; | ||
1283 | else | ||
1284 | size = 0; | ||
1285 | } | ||
1286 | up (&stv680->lock); | ||
1287 | |||
1288 | return 0; | ||
1289 | } | ||
1290 | |||
1291 | static ssize_t stv680_read (struct file *file, char __user *buf, | ||
1292 | size_t count, loff_t *ppos) | ||
1293 | { | ||
1294 | struct video_device *dev = file->private_data; | ||
1295 | unsigned long int realcount = count; | ||
1296 | int ret = 0; | ||
1297 | struct usb_stv *stv680 = video_get_drvdata(dev); | ||
1298 | unsigned long int i; | ||
1299 | |||
1300 | if (STV680_NUMFRAMES != 2) { | ||
1301 | PDEBUG (0, "STV(e): STV680_NUMFRAMES needs to be 2!"); | ||
1302 | return -1; | ||
1303 | } | ||
1304 | if (stv680->udev == NULL) | ||
1305 | return -EIO; | ||
1306 | if (realcount > (stv680->vwidth * stv680->vheight * 3)) | ||
1307 | realcount = stv680->vwidth * stv680->vheight * 3; | ||
1308 | |||
1309 | /* Shouldn't happen: */ | ||
1310 | if (stv680->frame[0].grabstate == FRAME_GRABBING) { | ||
1311 | PDEBUG (2, "STV(e): FRAME_GRABBING in stv680_read"); | ||
1312 | return -EBUSY; | ||
1313 | } | ||
1314 | stv680->frame[0].grabstate = FRAME_READY; | ||
1315 | stv680->frame[1].grabstate = FRAME_UNUSED; | ||
1316 | stv680->curframe = 0; | ||
1317 | |||
1318 | if (!stv680->streaming) | ||
1319 | stv680_start_stream (stv680); | ||
1320 | |||
1321 | if (!stv680->streaming) { | ||
1322 | ret = stv680_newframe (stv680, 0); /* ret should = 0 */ | ||
1323 | } | ||
1324 | |||
1325 | ret = stv680_newframe (stv680, 0); | ||
1326 | |||
1327 | if (!ret) { | ||
1328 | if ((i = copy_to_user (buf, stv680->frame[0].data, realcount)) != 0) { | ||
1329 | PDEBUG (2, "STV(e): copy_to_user frame 0 failed, ret count = %li", i); | ||
1330 | return -EFAULT; | ||
1331 | } | ||
1332 | } else { | ||
1333 | realcount = ret; | ||
1334 | } | ||
1335 | stv680->frame[0].grabstate = FRAME_UNUSED; | ||
1336 | return realcount; | ||
1337 | } /* stv680_read */ | ||
1338 | |||
1339 | static struct file_operations stv680_fops = { | ||
1340 | .owner = THIS_MODULE, | ||
1341 | .open = stv_open, | ||
1342 | .release = stv_close, | ||
1343 | .read = stv680_read, | ||
1344 | .mmap = stv680_mmap, | ||
1345 | .ioctl = stv680_ioctl, | ||
1346 | .llseek = no_llseek, | ||
1347 | }; | ||
1348 | static struct video_device stv680_template = { | ||
1349 | .owner = THIS_MODULE, | ||
1350 | .name = "STV0680 USB camera", | ||
1351 | .type = VID_TYPE_CAPTURE, | ||
1352 | .hardware = VID_HARDWARE_SE401, | ||
1353 | .fops = &stv680_fops, | ||
1354 | .release = video_device_release, | ||
1355 | .minor = -1, | ||
1356 | }; | ||
1357 | |||
1358 | static int stv680_probe (struct usb_interface *intf, const struct usb_device_id *id) | ||
1359 | { | ||
1360 | struct usb_device *dev = interface_to_usbdev(intf); | ||
1361 | struct usb_host_interface *interface; | ||
1362 | struct usb_stv *stv680 = NULL; | ||
1363 | char *camera_name = NULL; | ||
1364 | int retval = 0; | ||
1365 | |||
1366 | /* We don't handle multi-config cameras */ | ||
1367 | if (dev->descriptor.bNumConfigurations != 1) { | ||
1368 | PDEBUG (0, "STV(e): Number of Configurations != 1"); | ||
1369 | return -ENODEV; | ||
1370 | } | ||
1371 | |||
1372 | interface = &intf->altsetting[0]; | ||
1373 | /* Is it a STV680? */ | ||
1374 | if ((le16_to_cpu(dev->descriptor.idVendor) == USB_PENCAM_VENDOR_ID) && | ||
1375 | (le16_to_cpu(dev->descriptor.idProduct) == USB_PENCAM_PRODUCT_ID)) { | ||
1376 | camera_name = "STV0680"; | ||
1377 | PDEBUG (0, "STV(i): STV0680 camera found."); | ||
1378 | } else { | ||
1379 | PDEBUG (0, "STV(e): Vendor/Product ID do not match STV0680 values."); | ||
1380 | PDEBUG (0, "STV(e): Check that the STV0680 camera is connected to the computer."); | ||
1381 | retval = -ENODEV; | ||
1382 | goto error; | ||
1383 | } | ||
1384 | /* We found one */ | ||
1385 | if ((stv680 = kmalloc (sizeof (*stv680), GFP_KERNEL)) == NULL) { | ||
1386 | PDEBUG (0, "STV(e): couldn't kmalloc stv680 struct."); | ||
1387 | retval = -ENOMEM; | ||
1388 | goto error; | ||
1389 | } | ||
1390 | |||
1391 | memset (stv680, 0, sizeof (*stv680)); | ||
1392 | |||
1393 | stv680->udev = dev; | ||
1394 | stv680->camera_name = camera_name; | ||
1395 | |||
1396 | stv680->vdev = video_device_alloc(); | ||
1397 | if (!stv680->vdev) { | ||
1398 | retval = -ENOMEM; | ||
1399 | goto error; | ||
1400 | } | ||
1401 | memcpy(stv680->vdev, &stv680_template, sizeof(stv680_template)); | ||
1402 | stv680->vdev->dev = &intf->dev; | ||
1403 | video_set_drvdata(stv680->vdev, stv680); | ||
1404 | |||
1405 | memcpy (stv680->vdev->name, stv680->camera_name, strlen (stv680->camera_name)); | ||
1406 | init_waitqueue_head (&stv680->wq); | ||
1407 | init_MUTEX (&stv680->lock); | ||
1408 | wmb (); | ||
1409 | |||
1410 | if (video_register_device (stv680->vdev, VFL_TYPE_GRABBER, video_nr) == -1) { | ||
1411 | PDEBUG (0, "STV(e): video_register_device failed"); | ||
1412 | retval = -EIO; | ||
1413 | goto error_vdev; | ||
1414 | } | ||
1415 | PDEBUG (0, "STV(i): registered new video device: video%d", stv680->vdev->minor); | ||
1416 | |||
1417 | usb_set_intfdata (intf, stv680); | ||
1418 | stv680_create_sysfs_files(stv680->vdev); | ||
1419 | return 0; | ||
1420 | |||
1421 | error_vdev: | ||
1422 | video_device_release(stv680->vdev); | ||
1423 | error: | ||
1424 | kfree(stv680); | ||
1425 | return retval; | ||
1426 | } | ||
1427 | |||
1428 | static inline void usb_stv680_remove_disconnected (struct usb_stv *stv680) | ||
1429 | { | ||
1430 | int i; | ||
1431 | |||
1432 | stv680->udev = NULL; | ||
1433 | stv680->frame[0].grabstate = FRAME_ERROR; | ||
1434 | stv680->frame[1].grabstate = FRAME_ERROR; | ||
1435 | stv680->streaming = 0; | ||
1436 | |||
1437 | wake_up_interruptible (&stv680->wq); | ||
1438 | |||
1439 | for (i = 0; i < STV680_NUMSBUF; i++) | ||
1440 | if (stv680->urb[i]) { | ||
1441 | usb_kill_urb (stv680->urb[i]); | ||
1442 | usb_free_urb (stv680->urb[i]); | ||
1443 | stv680->urb[i] = NULL; | ||
1444 | kfree (stv680->sbuf[i].data); | ||
1445 | } | ||
1446 | for (i = 0; i < STV680_NUMSCRATCH; i++) | ||
1447 | kfree (stv680->scratch[i].data); | ||
1448 | PDEBUG (0, "STV(i): %s disconnected", stv680->camera_name); | ||
1449 | |||
1450 | /* Free the memory */ | ||
1451 | kfree (stv680); | ||
1452 | } | ||
1453 | |||
1454 | static void stv680_disconnect (struct usb_interface *intf) | ||
1455 | { | ||
1456 | struct usb_stv *stv680 = usb_get_intfdata (intf); | ||
1457 | |||
1458 | usb_set_intfdata (intf, NULL); | ||
1459 | |||
1460 | if (stv680) { | ||
1461 | /* We don't want people trying to open up the device */ | ||
1462 | if (stv680->vdev) { | ||
1463 | stv680_remove_sysfs_files(stv680->vdev); | ||
1464 | video_unregister_device(stv680->vdev); | ||
1465 | stv680->vdev = NULL; | ||
1466 | } | ||
1467 | if (!stv680->user) { | ||
1468 | usb_stv680_remove_disconnected (stv680); | ||
1469 | } else { | ||
1470 | stv680->removed = 1; | ||
1471 | } | ||
1472 | } | ||
1473 | } | ||
1474 | |||
1475 | static struct usb_driver stv680_driver = { | ||
1476 | .owner = THIS_MODULE, | ||
1477 | .name = "stv680", | ||
1478 | .probe = stv680_probe, | ||
1479 | .disconnect = stv680_disconnect, | ||
1480 | .id_table = device_table | ||
1481 | }; | ||
1482 | |||
1483 | /******************************************************************** | ||
1484 | * Module routines | ||
1485 | ********************************************************************/ | ||
1486 | |||
1487 | static int __init usb_stv680_init (void) | ||
1488 | { | ||
1489 | if (usb_register (&stv680_driver) < 0) { | ||
1490 | PDEBUG (0, "STV(e): Could not setup STV0680 driver"); | ||
1491 | return -1; | ||
1492 | } | ||
1493 | PDEBUG (0, "STV(i): usb camera driver version %s registering", DRIVER_VERSION); | ||
1494 | |||
1495 | info(DRIVER_DESC " " DRIVER_VERSION); | ||
1496 | return 0; | ||
1497 | } | ||
1498 | |||
1499 | static void __exit usb_stv680_exit (void) | ||
1500 | { | ||
1501 | usb_deregister (&stv680_driver); | ||
1502 | PDEBUG (0, "STV(i): driver deregistered"); | ||
1503 | } | ||
1504 | |||
1505 | module_init (usb_stv680_init); | ||
1506 | module_exit (usb_stv680_exit); | ||