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1da177e4 LT |
1 | /* |
2 | * STV0680 USB Camera Driver, by Kevin Sisson (kjsisson@bellsouth.net) | |
d56410e0 MCC |
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 | |
1da177e4 LT |
6 | * writing this driver. |
7 | * | |
d56410e0 | 8 | * This driver is based heavily on the |
1da177e4 LT |
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. | |
d56410e0 | 13 | * |
1da177e4 LT |
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 | * | |
d56410e0 MCC |
28 | * History: |
29 | * ver 0.1 October, 2001. Initial attempt. | |
1da177e4 LT |
30 | * |
31 | * ver 0.2 November, 2001. Fixed asbility to resize, added brightness | |
32 | * function, made more stable (?) | |
33 | * | |
d56410e0 MCC |
34 | * ver 0.21 Nov, 2001. Added gamma correction and white balance, |
35 | * due to Alexander Schwartz. Still trying to | |
1da177e4 LT |
36 | * improve stablility. Moved stuff into stv680.h |
37 | * | |
d56410e0 MCC |
38 | * ver 0.22 Nov, 2001. Added sharpen function (by Michael Sweet, |
39 | * mike@easysw.com) from GIMP, also used in pencam. | |
1da177e4 LT |
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 | * | |
d56410e0 | 47 | * ver 0.24 Jan, 2002 (kjs) |
1da177e4 | 48 | * Fixed the problem with webcam crashing after |
d56410e0 MCC |
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 | |
1da177e4 LT |
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 | ||
1da177e4 LT |
61 | #include <linux/module.h> |
62 | #include <linux/init.h> | |
63 | #include <linux/vmalloc.h> | |
64 | #include <linux/slab.h> | |
405f5571 | 65 | #include <linux/smp_lock.h> |
1da177e4 LT |
66 | #include <linux/pagemap.h> |
67 | #include <linux/errno.h> | |
68 | #include <linux/videodev.h> | |
5e87efa3 | 69 | #include <media/v4l2-common.h> |
35ea11ff | 70 | #include <media/v4l2-ioctl.h> |
1da177e4 | 71 | #include <linux/usb.h> |
4186ecf8 | 72 | #include <linux/mutex.h> |
1da177e4 LT |
73 | |
74 | #include "stv680.h" | |
75 | ||
76 | static int video_nr = -1; | |
1da177e4 | 77 | |
ff699e6b DSL |
78 | static int swapRGB; /* 0 = default for auto select */ |
79 | ||
80 | /* 0 = default to allow auto select; -1 = swap never, +1 = swap always */ | |
81 | static int swapRGB_on; | |
82 | ||
83 | static unsigned int debug; | |
1da177e4 LT |
84 | |
85 | #define PDEBUG(level, fmt, args...) \ | |
86 | do { \ | |
87 | if (debug >= level) \ | |
a482f327 GKH |
88 | printk(KERN_INFO KBUILD_MODNAME " [%s:%d] \n" fmt, \ |
89 | __func__, __LINE__ , ## args); \ | |
1da177e4 LT |
90 | } while (0) |
91 | ||
92 | ||
93 | /* | |
94 | * Version Information | |
95 | */ | |
96 | #define DRIVER_VERSION "v0.25" | |
97 | #define DRIVER_AUTHOR "Kevin Sisson <kjsisson@bellsouth.net>" | |
98 | #define DRIVER_DESC "STV0680 USB Camera Driver" | |
99 | ||
100 | MODULE_AUTHOR (DRIVER_AUTHOR); | |
101 | MODULE_DESCRIPTION (DRIVER_DESC); | |
102 | MODULE_LICENSE ("GPL"); | |
103 | module_param(debug, int, S_IRUGO | S_IWUSR); | |
104 | MODULE_PARM_DESC (debug, "Debug enabled or not"); | |
105 | module_param(swapRGB_on, int, 0); | |
106 | MODULE_PARM_DESC (swapRGB_on, "Red/blue swap: 1=always, 0=auto, -1=never"); | |
107 | module_param(video_nr, int, 0); | |
108 | ||
109 | /******************************************************************** | |
110 | * | |
111 | * Memory management | |
112 | * | |
113 | * This is a shameless copy from the USB-cpia driver (linux kernel | |
114 | * version 2.3.29 or so, I have no idea what this code actually does ;). | |
115 | * Actually it seems to be a copy of a shameless copy of the bttv-driver. | |
116 | * Or that is a copy of a shameless copy of ... (To the powers: is there | |
117 | * no generic kernel-function to do this sort of stuff?) | |
118 | * | |
119 | * Yes, it was a shameless copy from the bttv-driver. IIRC, Alan says | |
120 | * there will be one, but apparentely not yet -jerdfelt | |
121 | * | |
122 | * So I copied it again for the ov511 driver -claudio | |
123 | * | |
124 | * Same for the se401 driver -Jeroen | |
125 | * | |
126 | * And the STV0680 driver - Kevin | |
127 | ********************************************************************/ | |
128 | static void *rvmalloc (unsigned long size) | |
129 | { | |
130 | void *mem; | |
131 | unsigned long adr; | |
132 | ||
133 | size = PAGE_ALIGN(size); | |
134 | mem = vmalloc_32 (size); | |
135 | if (!mem) | |
136 | return NULL; | |
137 | ||
138 | memset (mem, 0, size); /* Clear the ram out, no junk to the user */ | |
139 | adr = (unsigned long) mem; | |
140 | while (size > 0) { | |
141 | SetPageReserved(vmalloc_to_page((void *)adr)); | |
142 | adr += PAGE_SIZE; | |
143 | size -= PAGE_SIZE; | |
144 | } | |
145 | return mem; | |
146 | } | |
147 | ||
148 | static void rvfree (void *mem, unsigned long size) | |
149 | { | |
150 | unsigned long adr; | |
151 | ||
152 | if (!mem) | |
153 | return; | |
154 | ||
155 | adr = (unsigned long) mem; | |
156 | while ((long) size > 0) { | |
157 | ClearPageReserved(vmalloc_to_page((void *)adr)); | |
158 | adr += PAGE_SIZE; | |
159 | size -= PAGE_SIZE; | |
160 | } | |
161 | vfree (mem); | |
162 | } | |
163 | ||
164 | ||
165 | /********************************************************************* | |
166 | * pencam read/write functions | |
167 | ********************************************************************/ | |
168 | ||
169 | static int stv_sndctrl (int set, struct usb_stv *stv680, unsigned short req, unsigned short value, unsigned char *buffer, int size) | |
170 | { | |
171 | int ret = -1; | |
172 | ||
173 | switch (set) { | |
174 | case 0: /* 0xc1 */ | |
175 | ret = usb_control_msg (stv680->udev, | |
176 | usb_rcvctrlpipe (stv680->udev, 0), | |
177 | req, | |
178 | (USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT), | |
179 | value, 0, buffer, size, PENCAM_TIMEOUT); | |
180 | break; | |
181 | ||
182 | case 1: /* 0x41 */ | |
183 | ret = usb_control_msg (stv680->udev, | |
184 | usb_sndctrlpipe (stv680->udev, 0), | |
185 | req, | |
186 | (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT), | |
187 | value, 0, buffer, size, PENCAM_TIMEOUT); | |
188 | break; | |
189 | ||
190 | case 2: /* 0x80 */ | |
191 | ret = usb_control_msg (stv680->udev, | |
192 | usb_rcvctrlpipe (stv680->udev, 0), | |
193 | req, | |
194 | (USB_DIR_IN | USB_RECIP_DEVICE), | |
195 | value, 0, buffer, size, PENCAM_TIMEOUT); | |
196 | break; | |
197 | ||
198 | case 3: /* 0x40 */ | |
199 | ret = usb_control_msg (stv680->udev, | |
200 | usb_sndctrlpipe (stv680->udev, 0), | |
201 | req, | |
202 | (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE), | |
203 | value, 0, buffer, size, PENCAM_TIMEOUT); | |
204 | break; | |
205 | ||
206 | } | |
207 | if ((ret < 0) && (req != 0x0a)) { | |
208 | PDEBUG (1, "STV(e): usb_control_msg error %i, request = 0x%x, error = %i", set, req, ret); | |
209 | } | |
210 | return ret; | |
211 | } | |
212 | ||
213 | static int stv_set_config (struct usb_stv *dev, int configuration, int interface, int alternate) | |
214 | { | |
215 | ||
216 | if (configuration != dev->udev->actconfig->desc.bConfigurationValue | |
217 | || usb_reset_configuration (dev->udev) < 0) { | |
218 | PDEBUG (1, "STV(e): FAILED to reset configuration %i", configuration); | |
219 | return -1; | |
220 | } | |
221 | if (usb_set_interface (dev->udev, interface, alternate) < 0) { | |
222 | PDEBUG (1, "STV(e): FAILED to set alternate interface %i", alternate); | |
223 | return -1; | |
224 | } | |
225 | return 0; | |
226 | } | |
227 | ||
228 | static int stv_stop_video (struct usb_stv *dev) | |
229 | { | |
230 | int i; | |
231 | unsigned char *buf; | |
232 | ||
233 | buf = kmalloc (40, GFP_KERNEL); | |
234 | if (buf == NULL) { | |
235 | PDEBUG (0, "STV(e): Out of (small buf) memory"); | |
236 | return -1; | |
237 | } | |
238 | ||
239 | /* this is a high priority command; it stops all lower order commands */ | |
240 | if ((i = stv_sndctrl (1, dev, 0x04, 0x0000, buf, 0x0)) < 0) { | |
241 | i = stv_sndctrl (0, dev, 0x80, 0, buf, 0x02); /* Get Last Error; 2 = busy */ | |
242 | PDEBUG (1, "STV(i): last error: %i, command = 0x%x", buf[0], buf[1]); | |
243 | } else { | |
244 | PDEBUG (1, "STV(i): Camera reset to idle mode."); | |
245 | } | |
246 | ||
247 | if ((i = stv_set_config (dev, 1, 0, 0)) < 0) | |
248 | PDEBUG (1, "STV(e): Reset config during exit failed"); | |
249 | ||
250 | /* get current mode */ | |
251 | buf[0] = 0xf0; | |
252 | if ((i = stv_sndctrl (0, dev, 0x87, 0, buf, 0x08)) != 0x08) /* get mode */ | |
253 | PDEBUG (0, "STV(e): Stop_video: problem setting original mode"); | |
254 | if (dev->origMode != buf[0]) { | |
255 | memset (buf, 0, 8); | |
256 | buf[0] = (unsigned char) dev->origMode; | |
257 | if ((i = stv_sndctrl (3, dev, 0x07, 0x0100, buf, 0x08)) != 0x08) { | |
258 | PDEBUG (0, "STV(e): Stop_video: Set_Camera_Mode failed"); | |
259 | i = -1; | |
260 | } | |
261 | buf[0] = 0xf0; | |
262 | i = stv_sndctrl (0, dev, 0x87, 0, buf, 0x08); | |
263 | if ((i != 0x08) || (buf[0] != dev->origMode)) { | |
264 | PDEBUG (0, "STV(e): camera NOT set to original resolution."); | |
265 | i = -1; | |
266 | } else | |
267 | PDEBUG (0, "STV(i): Camera set to original resolution"); | |
268 | } | |
269 | /* origMode */ | |
f9101210 | 270 | kfree(buf); |
1da177e4 LT |
271 | return i; |
272 | } | |
273 | ||
274 | static int stv_set_video_mode (struct usb_stv *dev) | |
275 | { | |
276 | int i, stop_video = 1; | |
277 | unsigned char *buf; | |
278 | ||
279 | buf = kmalloc (40, GFP_KERNEL); | |
280 | if (buf == NULL) { | |
281 | PDEBUG (0, "STV(e): Out of (small buf) memory"); | |
282 | return -1; | |
283 | } | |
284 | ||
285 | if ((i = stv_set_config (dev, 1, 0, 0)) < 0) { | |
f9101210 | 286 | kfree(buf); |
1da177e4 LT |
287 | return i; |
288 | } | |
289 | ||
290 | i = stv_sndctrl (2, dev, 0x06, 0x0100, buf, 0x12); | |
291 | if (!(i > 0) && (buf[8] == 0x53) && (buf[9] == 0x05)) { | |
292 | PDEBUG (1, "STV(e): Could not get descriptor 0100."); | |
293 | goto error; | |
294 | } | |
295 | ||
296 | /* set alternate interface 1 */ | |
297 | if ((i = stv_set_config (dev, 1, 0, 1)) < 0) | |
298 | goto error; | |
299 | ||
300 | if ((i = stv_sndctrl (0, dev, 0x85, 0, buf, 0x10)) != 0x10) | |
301 | goto error; | |
302 | PDEBUG (1, "STV(i): Setting video mode."); | |
303 | /* Switch to Video mode: 0x0100 = VGA (640x480), 0x0000 = CIF (352x288) 0x0300 = QVGA (320x240) */ | |
304 | if ((i = stv_sndctrl (1, dev, 0x09, dev->VideoMode, buf, 0x0)) < 0) { | |
305 | stop_video = 0; | |
306 | goto error; | |
307 | } | |
308 | goto exit; | |
309 | ||
310 | error: | |
f9101210 | 311 | kfree(buf); |
1da177e4 LT |
312 | if (stop_video == 1) |
313 | stv_stop_video (dev); | |
314 | return -1; | |
315 | ||
316 | exit: | |
f9101210 | 317 | kfree(buf); |
1da177e4 LT |
318 | return 0; |
319 | } | |
320 | ||
321 | static int stv_init (struct usb_stv *stv680) | |
322 | { | |
323 | int i = 0; | |
324 | unsigned char *buffer; | |
325 | unsigned long int bufsize; | |
326 | ||
80b6ca48 | 327 | buffer = kzalloc (40, GFP_KERNEL); |
1da177e4 LT |
328 | if (buffer == NULL) { |
329 | PDEBUG (0, "STV(e): Out of (small buf) memory"); | |
330 | return -1; | |
331 | } | |
1da177e4 LT |
332 | udelay (100); |
333 | ||
334 | /* set config 1, interface 0, alternate 0 */ | |
335 | if ((i = stv_set_config (stv680, 1, 0, 0)) < 0) { | |
f9101210 | 336 | kfree(buffer); |
1da177e4 LT |
337 | PDEBUG (0, "STV(e): set config 1,0,0 failed"); |
338 | return -1; | |
339 | } | |
340 | /* ping camera to be sure STV0680 is present */ | |
341 | if ((i = stv_sndctrl (0, stv680, 0x88, 0x5678, buffer, 0x02)) != 0x02) | |
342 | goto error; | |
343 | if ((buffer[0] != 0x56) || (buffer[1] != 0x78)) { | |
344 | PDEBUG (1, "STV(e): camera ping failed!!"); | |
345 | goto error; | |
346 | } | |
347 | ||
348 | /* get camera descriptor */ | |
349 | if ((i = stv_sndctrl (2, stv680, 0x06, 0x0200, buffer, 0x09)) != 0x09) | |
350 | goto error; | |
351 | i = stv_sndctrl (2, stv680, 0x06, 0x0200, buffer, 0x22); | |
352 | if (!(i >= 0) && (buffer[7] == 0xa0) && (buffer[8] == 0x23)) { | |
353 | PDEBUG (1, "STV(e): Could not get descriptor 0200."); | |
354 | goto error; | |
355 | } | |
356 | if ((i = stv_sndctrl (0, stv680, 0x8a, 0, buffer, 0x02)) != 0x02) | |
357 | goto error; | |
358 | if ((i = stv_sndctrl (0, stv680, 0x8b, 0, buffer, 0x24)) != 0x24) | |
359 | goto error; | |
360 | if ((i = stv_sndctrl (0, stv680, 0x85, 0, buffer, 0x10)) != 0x10) | |
361 | goto error; | |
362 | ||
363 | stv680->SupportedModes = buffer[7]; | |
364 | i = stv680->SupportedModes; | |
365 | stv680->CIF = 0; | |
366 | stv680->VGA = 0; | |
367 | stv680->QVGA = 0; | |
368 | if (i & 1) | |
369 | stv680->CIF = 1; | |
370 | if (i & 2) | |
371 | stv680->VGA = 1; | |
372 | if (i & 8) | |
373 | stv680->QVGA = 1; | |
374 | if (stv680->SupportedModes == 0) { | |
375 | PDEBUG (0, "STV(e): There are NO supported STV680 modes!!"); | |
376 | i = -1; | |
377 | goto error; | |
378 | } else { | |
379 | if (stv680->CIF) | |
380 | PDEBUG (0, "STV(i): CIF is supported"); | |
381 | if (stv680->QVGA) | |
382 | PDEBUG (0, "STV(i): QVGA is supported"); | |
383 | } | |
384 | /* FW rev, ASIC rev, sensor ID */ | |
385 | PDEBUG (1, "STV(i): Firmware rev is %i.%i", buffer[0], buffer[1]); | |
386 | PDEBUG (1, "STV(i): ASIC rev is %i.%i", buffer[2], buffer[3]); | |
387 | PDEBUG (1, "STV(i): Sensor ID is %i", (buffer[4]*16) + (buffer[5]>>4)); | |
388 | ||
389 | /* set alternate interface 1 */ | |
390 | if ((i = stv_set_config (stv680, 1, 0, 1)) < 0) | |
391 | goto error; | |
392 | ||
393 | if ((i = stv_sndctrl (0, stv680, 0x85, 0, buffer, 0x10)) != 0x10) | |
394 | goto error; | |
395 | if ((i = stv_sndctrl (0, stv680, 0x8d, 0, buffer, 0x08)) != 0x08) | |
396 | goto error; | |
397 | i = buffer[3]; | |
398 | PDEBUG (0, "STV(i): Camera has %i pictures.", i); | |
399 | ||
400 | /* get current mode */ | |
401 | if ((i = stv_sndctrl (0, stv680, 0x87, 0, buffer, 0x08)) != 0x08) | |
402 | goto error; | |
403 | stv680->origMode = buffer[0]; /* 01 = VGA, 03 = QVGA, 00 = CIF */ | |
404 | ||
405 | /* This will attemp CIF mode, if supported. If not, set to QVGA */ | |
406 | memset (buffer, 0, 8); | |
407 | if (stv680->CIF) | |
408 | buffer[0] = 0x00; | |
409 | else if (stv680->QVGA) | |
410 | buffer[0] = 0x03; | |
411 | if ((i = stv_sndctrl (3, stv680, 0x07, 0x0100, buffer, 0x08)) != 0x08) { | |
412 | PDEBUG (0, "STV(i): Set_Camera_Mode failed"); | |
413 | i = -1; | |
414 | goto error; | |
415 | } | |
416 | buffer[0] = 0xf0; | |
417 | stv_sndctrl (0, stv680, 0x87, 0, buffer, 0x08); | |
418 | if (((stv680->CIF == 1) && (buffer[0] != 0x00)) || ((stv680->QVGA == 1) && (buffer[0] != 0x03))) { | |
419 | PDEBUG (0, "STV(e): Error setting camera video mode!"); | |
420 | i = -1; | |
421 | goto error; | |
422 | } else { | |
423 | if (buffer[0] == 0) { | |
424 | stv680->VideoMode = 0x0000; | |
425 | PDEBUG (0, "STV(i): Video Mode set to CIF"); | |
426 | } | |
427 | if (buffer[0] == 0x03) { | |
428 | stv680->VideoMode = 0x0300; | |
429 | PDEBUG (0, "STV(i): Video Mode set to QVGA"); | |
430 | } | |
431 | } | |
432 | if ((i = stv_sndctrl (0, stv680, 0x8f, 0, buffer, 0x10)) != 0x10) | |
433 | goto error; | |
434 | bufsize = (buffer[0] << 24) | (buffer[1] << 16) | (buffer[2] << 8) | (buffer[3]); | |
435 | stv680->cwidth = (buffer[4] << 8) | (buffer[5]); /* ->camera = 322, 356, 644 */ | |
436 | stv680->cheight = (buffer[6] << 8) | (buffer[7]); /* ->camera = 242, 292, 484 */ | |
437 | stv680->origGain = buffer[12]; | |
438 | ||
439 | goto exit; | |
440 | ||
441 | error: | |
442 | i = stv_sndctrl (0, stv680, 0x80, 0, buffer, 0x02); /* Get Last Error */ | |
443 | PDEBUG (1, "STV(i): last error: %i, command = 0x%x", buffer[0], buffer[1]); | |
f9101210 | 444 | kfree(buffer); |
1da177e4 LT |
445 | return -1; |
446 | ||
447 | exit: | |
f9101210 | 448 | kfree(buffer); |
1da177e4 LT |
449 | |
450 | /* video = 320x240, 352x288 */ | |
451 | if (stv680->CIF == 1) { | |
452 | stv680->maxwidth = 352; | |
453 | stv680->maxheight = 288; | |
454 | stv680->vwidth = 352; | |
455 | stv680->vheight = 288; | |
456 | } | |
457 | if (stv680->QVGA == 1) { | |
458 | stv680->maxwidth = 320; | |
459 | stv680->maxheight = 240; | |
460 | stv680->vwidth = 320; | |
461 | stv680->vheight = 240; | |
462 | } | |
463 | ||
464 | stv680->rawbufsize = bufsize; /* must be ./. by 8 */ | |
465 | stv680->maxframesize = bufsize * 3; /* RGB size */ | |
466 | PDEBUG (2, "STV(i): cwidth = %i, cheight = %i", stv680->cwidth, stv680->cheight); | |
467 | PDEBUG (1, "STV(i): width = %i, height = %i, rawbufsize = %li", stv680->vwidth, stv680->vheight, stv680->rawbufsize); | |
468 | ||
469 | /* some default values */ | |
470 | stv680->bulk_in_endpointAddr = 0x82; | |
471 | stv680->dropped = 0; | |
472 | stv680->error = 0; | |
473 | stv680->framecount = 0; | |
474 | stv680->readcount = 0; | |
475 | stv680->streaming = 0; | |
476 | /* bright, white, colour, hue, contrast are set by software, not in stv0680 */ | |
477 | stv680->brightness = 32767; | |
478 | stv680->chgbright = 0; | |
479 | stv680->whiteness = 0; /* only for greyscale */ | |
480 | stv680->colour = 32767; | |
481 | stv680->contrast = 32767; | |
482 | stv680->hue = 32767; | |
483 | stv680->palette = STV_VIDEO_PALETTE; | |
484 | stv680->depth = 24; /* rgb24 bits */ | |
485 | if ((swapRGB_on == 0) && (swapRGB == 0)) | |
486 | PDEBUG (1, "STV(i): swapRGB is (auto) OFF"); | |
487 | else if ((swapRGB_on == 0) && (swapRGB == 1)) | |
488 | PDEBUG (1, "STV(i): swapRGB is (auto) ON"); | |
489 | else if (swapRGB_on == 1) | |
490 | PDEBUG (1, "STV(i): swapRGB is (forced) ON"); | |
491 | else if (swapRGB_on == -1) | |
492 | PDEBUG (1, "STV(i): swapRGB is (forced) OFF"); | |
d56410e0 | 493 | |
1da177e4 LT |
494 | if (stv_set_video_mode (stv680) < 0) { |
495 | PDEBUG (0, "STV(e): Could not set video mode in stv_init"); | |
496 | return -1; | |
497 | } | |
498 | ||
499 | return 0; | |
500 | } | |
501 | ||
502 | /***************** last of pencam routines *******************/ | |
503 | ||
504 | /**************************************************************************** | |
505 | * sysfs | |
506 | ***************************************************************************/ | |
507 | #define stv680_file(name, variable, field) \ | |
54bd5b66 KS |
508 | static ssize_t show_##name(struct device *class_dev, \ |
509 | struct device_attribute *attr, char *buf) \ | |
1da177e4 LT |
510 | { \ |
511 | struct video_device *vdev = to_video_device(class_dev); \ | |
512 | struct usb_stv *stv = video_get_drvdata(vdev); \ | |
513 | return sprintf(buf, field, stv->variable); \ | |
514 | } \ | |
54bd5b66 | 515 | static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL); |
1da177e4 LT |
516 | |
517 | stv680_file(model, camera_name, "%s\n"); | |
518 | stv680_file(in_use, user, "%d\n"); | |
519 | stv680_file(streaming, streaming, "%d\n"); | |
520 | stv680_file(palette, palette, "%i\n"); | |
521 | stv680_file(frames_total, readcount, "%d\n"); | |
522 | stv680_file(frames_read, framecount, "%d\n"); | |
523 | stv680_file(packets_dropped, dropped, "%d\n"); | |
524 | stv680_file(decoding_errors, error, "%d\n"); | |
525 | ||
2444a2fc | 526 | static int stv680_create_sysfs_files(struct video_device *vdev) |
1da177e4 | 527 | { |
2444a2fc JG |
528 | int rc; |
529 | ||
f894dfd7 | 530 | rc = device_create_file(&vdev->dev, &dev_attr_model); |
2444a2fc | 531 | if (rc) goto err; |
f894dfd7 | 532 | rc = device_create_file(&vdev->dev, &dev_attr_in_use); |
2444a2fc | 533 | if (rc) goto err_model; |
f894dfd7 | 534 | rc = device_create_file(&vdev->dev, &dev_attr_streaming); |
2444a2fc | 535 | if (rc) goto err_inuse; |
f894dfd7 | 536 | rc = device_create_file(&vdev->dev, &dev_attr_palette); |
2444a2fc | 537 | if (rc) goto err_stream; |
f894dfd7 | 538 | rc = device_create_file(&vdev->dev, &dev_attr_frames_total); |
2444a2fc | 539 | if (rc) goto err_pal; |
f894dfd7 | 540 | rc = device_create_file(&vdev->dev, &dev_attr_frames_read); |
2444a2fc | 541 | if (rc) goto err_framtot; |
f894dfd7 | 542 | rc = device_create_file(&vdev->dev, &dev_attr_packets_dropped); |
2444a2fc | 543 | if (rc) goto err_framread; |
f894dfd7 | 544 | rc = device_create_file(&vdev->dev, &dev_attr_decoding_errors); |
2444a2fc JG |
545 | if (rc) goto err_dropped; |
546 | ||
547 | return 0; | |
548 | ||
549 | err_dropped: | |
f894dfd7 | 550 | device_remove_file(&vdev->dev, &dev_attr_packets_dropped); |
2444a2fc | 551 | err_framread: |
f894dfd7 | 552 | device_remove_file(&vdev->dev, &dev_attr_frames_read); |
2444a2fc | 553 | err_framtot: |
f894dfd7 | 554 | device_remove_file(&vdev->dev, &dev_attr_frames_total); |
2444a2fc | 555 | err_pal: |
f894dfd7 | 556 | device_remove_file(&vdev->dev, &dev_attr_palette); |
2444a2fc | 557 | err_stream: |
f894dfd7 | 558 | device_remove_file(&vdev->dev, &dev_attr_streaming); |
2444a2fc | 559 | err_inuse: |
f894dfd7 | 560 | device_remove_file(&vdev->dev, &dev_attr_in_use); |
2444a2fc | 561 | err_model: |
f894dfd7 | 562 | device_remove_file(&vdev->dev, &dev_attr_model); |
2444a2fc | 563 | err: |
f894dfd7 | 564 | PDEBUG(0, "STV(e): Could not create sysfs files"); |
2444a2fc | 565 | return rc; |
1da177e4 LT |
566 | } |
567 | ||
568 | static void stv680_remove_sysfs_files(struct video_device *vdev) | |
569 | { | |
f894dfd7 HV |
570 | device_remove_file(&vdev->dev, &dev_attr_model); |
571 | device_remove_file(&vdev->dev, &dev_attr_in_use); | |
572 | device_remove_file(&vdev->dev, &dev_attr_streaming); | |
573 | device_remove_file(&vdev->dev, &dev_attr_palette); | |
574 | device_remove_file(&vdev->dev, &dev_attr_frames_total); | |
575 | device_remove_file(&vdev->dev, &dev_attr_frames_read); | |
576 | device_remove_file(&vdev->dev, &dev_attr_packets_dropped); | |
577 | device_remove_file(&vdev->dev, &dev_attr_decoding_errors); | |
1da177e4 LT |
578 | } |
579 | ||
580 | /******************************************************************** | |
581 | * Camera control | |
582 | *******************************************************************/ | |
583 | ||
584 | static int stv680_get_pict (struct usb_stv *stv680, struct video_picture *p) | |
585 | { | |
586 | /* This sets values for v4l interface. max/min = 65535/0 */ | |
587 | ||
588 | p->brightness = stv680->brightness; | |
589 | p->whiteness = stv680->whiteness; /* greyscale */ | |
590 | p->colour = stv680->colour; | |
591 | p->contrast = stv680->contrast; | |
592 | p->hue = stv680->hue; | |
593 | p->palette = stv680->palette; | |
594 | p->depth = stv680->depth; | |
595 | return 0; | |
596 | } | |
597 | ||
598 | static int stv680_set_pict (struct usb_stv *stv680, struct video_picture *p) | |
599 | { | |
600 | /* See above stv680_get_pict */ | |
601 | ||
602 | if (p->palette != STV_VIDEO_PALETTE) { | |
603 | PDEBUG (2, "STV(e): Palette set error in _set_pic"); | |
604 | return 1; | |
605 | } | |
606 | ||
607 | if (stv680->brightness != p->brightness) { | |
608 | stv680->chgbright = 1; | |
609 | stv680->brightness = p->brightness; | |
d56410e0 | 610 | } |
1da177e4 LT |
611 | |
612 | stv680->whiteness = p->whiteness; /* greyscale */ | |
613 | stv680->colour = p->colour; | |
614 | stv680->contrast = p->contrast; | |
615 | stv680->hue = p->hue; | |
616 | stv680->palette = p->palette; | |
617 | stv680->depth = p->depth; | |
618 | ||
619 | return 0; | |
620 | } | |
621 | ||
7d12e780 | 622 | static void stv680_video_irq (struct urb *urb) |
1da177e4 LT |
623 | { |
624 | struct usb_stv *stv680 = urb->context; | |
625 | int length = urb->actual_length; | |
626 | ||
627 | if (length < stv680->rawbufsize) | |
628 | PDEBUG (2, "STV(i): Lost data in transfer: exp %li, got %i", stv680->rawbufsize, length); | |
629 | ||
630 | /* ohoh... */ | |
631 | if (!stv680->streaming) | |
632 | return; | |
633 | ||
634 | if (!stv680->udev) { | |
635 | PDEBUG (0, "STV(e): device vapourished in video_irq"); | |
636 | return; | |
637 | } | |
638 | ||
639 | /* 0 sized packets happen if we are to fast, but sometimes the camera | |
640 | keeps sending them forever... | |
641 | */ | |
642 | if (length && !urb->status) { | |
643 | stv680->nullpackets = 0; | |
644 | switch (stv680->scratch[stv680->scratch_next].state) { | |
645 | case BUFFER_READY: | |
646 | case BUFFER_BUSY: | |
647 | stv680->dropped++; | |
648 | break; | |
649 | ||
650 | case BUFFER_UNUSED: | |
651 | memcpy (stv680->scratch[stv680->scratch_next].data, | |
d56410e0 | 652 | (unsigned char *) urb->transfer_buffer, length); |
1da177e4 LT |
653 | stv680->scratch[stv680->scratch_next].state = BUFFER_READY; |
654 | stv680->scratch[stv680->scratch_next].length = length; | |
655 | if (waitqueue_active (&stv680->wq)) { | |
656 | wake_up_interruptible (&stv680->wq); | |
657 | } | |
658 | stv680->scratch_overflow = 0; | |
659 | stv680->scratch_next++; | |
660 | if (stv680->scratch_next >= STV680_NUMSCRATCH) | |
661 | stv680->scratch_next = 0; | |
662 | break; | |
663 | } /* switch */ | |
664 | } else { | |
665 | stv680->nullpackets++; | |
666 | if (stv680->nullpackets > STV680_MAX_NULLPACKETS) { | |
667 | if (waitqueue_active (&stv680->wq)) { | |
668 | wake_up_interruptible (&stv680->wq); | |
669 | } | |
670 | } | |
671 | } /* if - else */ | |
672 | ||
673 | /* Resubmit urb for new data */ | |
674 | urb->status = 0; | |
675 | urb->dev = stv680->udev; | |
676 | if (usb_submit_urb (urb, GFP_ATOMIC)) | |
677 | PDEBUG (0, "STV(e): urb burned down in video irq"); | |
678 | return; | |
679 | } /* _video_irq */ | |
680 | ||
681 | static int stv680_start_stream (struct usb_stv *stv680) | |
682 | { | |
683 | struct urb *urb; | |
684 | int err = 0, i; | |
685 | ||
686 | stv680->streaming = 1; | |
687 | ||
688 | /* Do some memory allocation */ | |
689 | for (i = 0; i < STV680_NUMFRAMES; i++) { | |
690 | stv680->frame[i].data = stv680->fbuf + i * stv680->maxframesize; | |
691 | stv680->frame[i].curpix = 0; | |
692 | } | |
693 | /* packet size = 4096 */ | |
694 | for (i = 0; i < STV680_NUMSBUF; i++) { | |
695 | stv680->sbuf[i].data = kmalloc (stv680->rawbufsize, GFP_KERNEL); | |
696 | if (stv680->sbuf[i].data == NULL) { | |
697 | PDEBUG (0, "STV(e): Could not kmalloc raw data buffer %i", i); | |
c85f49d4 | 698 | goto nomem_err; |
1da177e4 LT |
699 | } |
700 | } | |
701 | ||
702 | stv680->scratch_next = 0; | |
703 | stv680->scratch_use = 0; | |
704 | stv680->scratch_overflow = 0; | |
705 | for (i = 0; i < STV680_NUMSCRATCH; i++) { | |
706 | stv680->scratch[i].data = kmalloc (stv680->rawbufsize, GFP_KERNEL); | |
707 | if (stv680->scratch[i].data == NULL) { | |
708 | PDEBUG (0, "STV(e): Could not kmalloc raw scratch buffer %i", i); | |
c85f49d4 | 709 | goto nomem_err; |
1da177e4 LT |
710 | } |
711 | stv680->scratch[i].state = BUFFER_UNUSED; | |
712 | } | |
713 | ||
714 | for (i = 0; i < STV680_NUMSBUF; i++) { | |
715 | urb = usb_alloc_urb (0, GFP_KERNEL); | |
716 | if (!urb) | |
c85f49d4 | 717 | goto nomem_err; |
1da177e4 LT |
718 | |
719 | /* sbuf is urb->transfer_buffer, later gets memcpyed to scratch */ | |
720 | usb_fill_bulk_urb (urb, stv680->udev, | |
721 | usb_rcvbulkpipe (stv680->udev, stv680->bulk_in_endpointAddr), | |
722 | stv680->sbuf[i].data, stv680->rawbufsize, | |
723 | stv680_video_irq, stv680); | |
724 | stv680->urb[i] = urb; | |
725 | err = usb_submit_urb (stv680->urb[i], GFP_KERNEL); | |
2f3ed053 MCC |
726 | if (err) { |
727 | PDEBUG (0, "STV(e): urb burned down with err " | |
728 | "%d in start stream %d", err, i); | |
729 | goto nomem_err; | |
730 | } | |
1da177e4 LT |
731 | } /* i STV680_NUMSBUF */ |
732 | ||
733 | stv680->framecount = 0; | |
734 | return 0; | |
c85f49d4 AC |
735 | |
736 | nomem_err: | |
737 | for (i = 0; i < STV680_NUMSCRATCH; i++) { | |
738 | kfree(stv680->scratch[i].data); | |
739 | stv680->scratch[i].data = NULL; | |
740 | } | |
741 | for (i = 0; i < STV680_NUMSBUF; i++) { | |
742 | usb_kill_urb(stv680->urb[i]); | |
743 | usb_free_urb(stv680->urb[i]); | |
744 | stv680->urb[i] = NULL; | |
745 | kfree(stv680->sbuf[i].data); | |
746 | stv680->sbuf[i].data = NULL; | |
747 | } | |
748 | return -ENOMEM; | |
749 | ||
1da177e4 LT |
750 | } |
751 | ||
752 | static int stv680_stop_stream (struct usb_stv *stv680) | |
753 | { | |
754 | int i; | |
755 | ||
756 | if (!stv680->streaming || !stv680->udev) | |
757 | return 1; | |
758 | ||
759 | stv680->streaming = 0; | |
760 | ||
761 | for (i = 0; i < STV680_NUMSBUF; i++) | |
762 | if (stv680->urb[i]) { | |
763 | usb_kill_urb (stv680->urb[i]); | |
764 | usb_free_urb (stv680->urb[i]); | |
765 | stv680->urb[i] = NULL; | |
f9101210 | 766 | kfree(stv680->sbuf[i].data); |
1da177e4 LT |
767 | } |
768 | for (i = 0; i < STV680_NUMSCRATCH; i++) { | |
f9101210 | 769 | kfree(stv680->scratch[i].data); |
1da177e4 LT |
770 | stv680->scratch[i].data = NULL; |
771 | } | |
772 | ||
773 | return 0; | |
774 | } | |
775 | ||
776 | static int stv680_set_size (struct usb_stv *stv680, int width, int height) | |
777 | { | |
778 | int wasstreaming = stv680->streaming; | |
779 | ||
780 | /* Check to see if we need to change */ | |
781 | if ((stv680->vwidth == width) && (stv680->vheight == height)) | |
782 | return 0; | |
783 | ||
784 | PDEBUG (1, "STV(i): size request for %i x %i", width, height); | |
785 | /* Check for a valid mode */ | |
786 | if ((!width || !height) || ((width & 1) || (height & 1))) { | |
787 | 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); | |
788 | return 1; | |
789 | } | |
790 | ||
791 | if ((width < (stv680->maxwidth / 2)) || (height < (stv680->maxheight / 2))) { | |
792 | width = stv680->maxwidth / 2; | |
793 | height = stv680->maxheight / 2; | |
794 | } else if ((width >= 158) && (width <= 166) && (stv680->QVGA == 1)) { | |
795 | width = 160; | |
796 | height = 120; | |
797 | } else if ((width >= 172) && (width <= 180) && (stv680->CIF == 1)) { | |
798 | width = 176; | |
799 | height = 144; | |
800 | } else if ((width >= 318) && (width <= 350) && (stv680->QVGA == 1)) { | |
801 | width = 320; | |
802 | height = 240; | |
803 | } else if ((width >= 350) && (width <= 358) && (stv680->CIF == 1)) { | |
804 | width = 352; | |
805 | height = 288; | |
806 | } else { | |
807 | 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); | |
808 | return 1; | |
809 | } | |
d56410e0 | 810 | |
1da177e4 LT |
811 | /* Stop a current stream and start it again at the new size */ |
812 | if (wasstreaming) | |
813 | stv680_stop_stream (stv680); | |
814 | stv680->vwidth = width; | |
815 | stv680->vheight = height; | |
816 | PDEBUG (1, "STV(i): size set to %i x %i", stv680->vwidth, stv680->vheight); | |
817 | if (wasstreaming) | |
818 | stv680_start_stream (stv680); | |
819 | ||
820 | return 0; | |
821 | } | |
822 | ||
823 | /********************************************************************** | |
824 | * Video Decoding | |
825 | **********************************************************************/ | |
826 | ||
827 | /******* routines from the pencam program; hey, they work! ********/ | |
828 | ||
829 | /* | |
830 | * STV0680 Vision Camera Chipset Driver | |
d56410e0 | 831 | * Copyright (C) 2000 Adam Harrison <adam@antispin.org> |
1da177e4 LT |
832 | */ |
833 | ||
834 | #define RED 0 | |
835 | #define GREEN 1 | |
836 | #define BLUE 2 | |
837 | #define AD(x, y, w) (((y)*(w)+(x))*3) | |
838 | ||
839 | static void bayer_unshuffle (struct usb_stv *stv680, struct stv680_scratch *buffer) | |
840 | { | |
841 | int x, y, i; | |
842 | int w = stv680->cwidth; | |
843 | int vw = stv680->cwidth, vh = stv680->cheight; | |
844 | unsigned int p = 0; | |
845 | int colour = 0, bayer = 0; | |
846 | unsigned char *raw = buffer->data; | |
847 | struct stv680_frame *frame = &stv680->frame[stv680->curframe]; | |
848 | unsigned char *output = frame->data; | |
849 | unsigned char *temp = frame->data; | |
850 | int offset = buffer->offset; | |
851 | ||
852 | if (frame->curpix == 0) { | |
853 | if (frame->grabstate == FRAME_READY) { | |
854 | frame->grabstate = FRAME_GRABBING; | |
855 | } | |
856 | } | |
857 | if (offset != frame->curpix) { /* Regard frame as lost :( */ | |
858 | frame->curpix = 0; | |
859 | stv680->error++; | |
860 | return; | |
861 | } | |
862 | ||
863 | if ((stv680->vwidth == 320) || (stv680->vwidth == 160)) { | |
864 | vw = 320; | |
865 | vh = 240; | |
866 | } | |
867 | if ((stv680->vwidth == 352) || (stv680->vwidth == 176)) { | |
868 | vw = 352; | |
869 | vh = 288; | |
870 | } | |
871 | ||
872 | memset (output, 0, 3 * vw * vh); /* clear output matrix. */ | |
873 | ||
874 | for (y = 0; y < vh; y++) { | |
875 | for (x = 0; x < vw; x++) { | |
876 | if (x & 1) | |
877 | p = *(raw + y * w + (x >> 1)); | |
878 | else | |
879 | p = *(raw + y * w + (x >> 1) + (w >> 1)); | |
880 | ||
881 | if (y & 1) | |
882 | bayer = 2; | |
883 | else | |
884 | bayer = 0; | |
885 | if (x & 1) | |
886 | bayer++; | |
887 | ||
888 | switch (bayer) { | |
889 | case 0: | |
890 | case 3: | |
891 | colour = 1; | |
892 | break; | |
893 | case 1: | |
894 | colour = 0; | |
895 | break; | |
896 | case 2: | |
897 | colour = 2; | |
898 | break; | |
899 | } | |
d56410e0 | 900 | i = (y * vw + x) * 3; |
1da177e4 LT |
901 | *(output + i + colour) = (unsigned char) p; |
902 | } /* for x */ | |
903 | ||
904 | } /* for y */ | |
905 | ||
906 | /****** gamma correction plus hardcoded white balance */ | |
907 | /* Thanks to Alexander Schwartx <alexander.schwartx@gmx.net> for this code. | |
d56410e0 MCC |
908 | Correction values red[], green[], blue[], are generated by |
909 | (pow(i/256.0, GAMMA)*255.0)*white balanceRGB where GAMMA=0.55, 1<i<255. | |
910 | White balance (RGB)= 1.0, 1.17, 1.48. Values are calculated as double float and | |
1da177e4 LT |
911 | converted to unsigned char. Values are in stv680.h */ |
912 | ||
913 | for (y = 0; y < vh; y++) { | |
914 | for (x = 0; x < vw; x++) { | |
915 | i = (y * vw + x) * 3; | |
916 | *(output + i) = red[*(output + i)]; | |
917 | *(output + i + 1) = green[*(output + i + 1)]; | |
918 | *(output + i + 2) = blue[*(output + i + 2)]; | |
919 | } | |
920 | } | |
921 | ||
922 | /****** bayer demosaic ******/ | |
923 | for (y = 1; y < (vh - 1); y++) { | |
924 | for (x = 1; x < (vw - 1); x++) { /* work out pixel type */ | |
925 | if (y & 1) | |
926 | bayer = 0; | |
927 | else | |
928 | bayer = 2; | |
929 | if (!(x & 1)) | |
930 | bayer++; | |
931 | ||
932 | switch (bayer) { | |
933 | case 0: /* green. blue lr, red tb */ | |
934 | *(output + AD (x, y, vw) + BLUE) = ((int) *(output + AD (x - 1, y, vw) + BLUE) + (int) *(output + AD (x + 1, y, vw) + BLUE)) >> 1; | |
935 | *(output + AD (x, y, vw) + RED) = ((int) *(output + AD (x, y - 1, vw) + RED) + (int) *(output + AD (x, y + 1, vw) + RED)) >> 1; | |
936 | break; | |
937 | ||
938 | case 1: /* blue. green lrtb, red diagonals */ | |
939 | *(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; | |
940 | *(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; | |
941 | break; | |
942 | ||
943 | case 2: /* red. green lrtb, blue diagonals */ | |
944 | *(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; | |
945 | *(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; | |
946 | break; | |
947 | ||
948 | case 3: /* green. red lr, blue tb */ | |
949 | *(output + AD (x, y, vw) + RED) = ((int) *(output + AD (x - 1, y, vw) + RED) + (int) *(output + AD (x + 1, y, vw) + RED)) >> 1; | |
950 | *(output + AD (x, y, vw) + BLUE) = ((int) *(output + AD (x, y - 1, vw) + BLUE) + (int) *(output + AD (x, y + 1, vw) + BLUE)) >> 1; | |
951 | break; | |
952 | } /* switch */ | |
953 | } /* for x */ | |
954 | } /* for y - end demosaic */ | |
955 | ||
956 | /* fix top and bottom row, left and right side */ | |
957 | i = vw * 3; | |
958 | memcpy (output, (output + i), i); | |
959 | memcpy ((output + (vh * i)), (output + ((vh - 1) * i)), i); | |
960 | for (y = 0; y < vh; y++) { | |
961 | i = y * vw * 3; | |
962 | memcpy ((output + i), (output + i + 3), 3); | |
963 | memcpy ((output + i + (vw * 3)), (output + i + (vw - 1) * 3), 3); | |
964 | } | |
965 | ||
966 | /* process all raw data, then trim to size if necessary */ | |
967 | if ((stv680->vwidth == 160) || (stv680->vwidth == 176)) { | |
968 | i = 0; | |
969 | for (y = 0; y < vh; y++) { | |
970 | if (!(y & 1)) { | |
971 | for (x = 0; x < vw; x++) { | |
972 | p = (y * vw + x) * 3; | |
973 | if (!(x & 1)) { | |
974 | *(output + i) = *(output + p); | |
975 | *(output + i + 1) = *(output + p + 1); | |
976 | *(output + i + 2) = *(output + p + 2); | |
977 | i += 3; | |
978 | } | |
979 | } /* for x */ | |
980 | } | |
981 | } /* for y */ | |
982 | } | |
983 | /* reset to proper width */ | |
984 | if ((stv680->vwidth == 160)) { | |
985 | vw = 160; | |
986 | vh = 120; | |
987 | } | |
988 | if ((stv680->vwidth == 176)) { | |
989 | vw = 176; | |
990 | vh = 144; | |
991 | } | |
992 | ||
993 | /* output is RGB; some programs want BGR */ | |
994 | /* swapRGB_on=0 -> program decides; swapRGB_on=1, always swap */ | |
995 | /* swapRGB_on=-1, never swap */ | |
996 | if (((swapRGB == 1) && (swapRGB_on != -1)) || (swapRGB_on == 1)) { | |
997 | for (y = 0; y < vh; y++) { | |
998 | for (x = 0; x < vw; x++) { | |
999 | i = (y * vw + x) * 3; | |
1000 | *(temp) = *(output + i); | |
1001 | *(output + i) = *(output + i + 2); | |
1002 | *(output + i + 2) = *(temp); | |
1003 | } | |
1004 | } | |
1005 | } | |
1006 | /* brightness */ | |
1007 | if (stv680->chgbright == 1) { | |
1008 | if (stv680->brightness >= 32767) { | |
1009 | p = (stv680->brightness - 32767) / 256; | |
1010 | for (x = 0; x < (vw * vh * 3); x++) { | |
1011 | if ((*(output + x) + (unsigned char) p) > 255) | |
1012 | *(output + x) = 255; | |
1013 | else | |
1014 | *(output + x) += (unsigned char) p; | |
1015 | } /* for */ | |
1016 | } else { | |
1017 | p = (32767 - stv680->brightness) / 256; | |
1018 | for (x = 0; x < (vw * vh * 3); x++) { | |
1019 | if ((unsigned char) p > *(output + x)) | |
1020 | *(output + x) = 0; | |
1021 | else | |
1022 | *(output + x) -= (unsigned char) p; | |
1023 | } /* for */ | |
1024 | } /* else */ | |
1025 | } | |
1026 | /* if */ | |
1027 | frame->curpix = 0; | |
1028 | frame->curlinepix = 0; | |
1029 | frame->grabstate = FRAME_DONE; | |
1030 | stv680->framecount++; | |
1031 | stv680->readcount++; | |
1032 | if (stv680->frame[(stv680->curframe + 1) & (STV680_NUMFRAMES - 1)].grabstate == FRAME_READY) { | |
1033 | stv680->curframe = (stv680->curframe + 1) & (STV680_NUMFRAMES - 1); | |
1034 | } | |
1035 | ||
1036 | } /* bayer_unshuffle */ | |
1037 | ||
1038 | /******* end routines from the pencam program *********/ | |
1039 | ||
1040 | static int stv680_newframe (struct usb_stv *stv680, int framenr) | |
1041 | { | |
1042 | int errors = 0; | |
1043 | ||
1044 | while (stv680->streaming && (stv680->frame[framenr].grabstate == FRAME_READY || stv680->frame[framenr].grabstate == FRAME_GRABBING)) { | |
1045 | if (!stv680->frame[framenr].curpix) { | |
1046 | errors++; | |
1047 | } | |
1048 | wait_event_interruptible (stv680->wq, (stv680->scratch[stv680->scratch_use].state == BUFFER_READY)); | |
1049 | ||
1050 | if (stv680->nullpackets > STV680_MAX_NULLPACKETS) { | |
1051 | stv680->nullpackets = 0; | |
1052 | PDEBUG (2, "STV(i): too many null length packets, restarting capture"); | |
1053 | stv680_stop_stream (stv680); | |
1054 | stv680_start_stream (stv680); | |
1055 | } else { | |
1056 | if (stv680->scratch[stv680->scratch_use].state != BUFFER_READY) { | |
1057 | stv680->frame[framenr].grabstate = FRAME_ERROR; | |
1058 | PDEBUG (2, "STV(e): FRAME_ERROR in _newframe"); | |
1059 | return -EIO; | |
1060 | } | |
1061 | stv680->scratch[stv680->scratch_use].state = BUFFER_BUSY; | |
1062 | ||
1063 | bayer_unshuffle (stv680, &stv680->scratch[stv680->scratch_use]); | |
1064 | ||
1065 | stv680->scratch[stv680->scratch_use].state = BUFFER_UNUSED; | |
1066 | stv680->scratch_use++; | |
1067 | if (stv680->scratch_use >= STV680_NUMSCRATCH) | |
1068 | stv680->scratch_use = 0; | |
1069 | if (errors > STV680_MAX_ERRORS) { | |
1070 | errors = 0; | |
1071 | PDEBUG (2, "STV(i): too many errors, restarting capture"); | |
1072 | stv680_stop_stream (stv680); | |
1073 | stv680_start_stream (stv680); | |
1074 | } | |
1075 | } /* else */ | |
1076 | } /* while */ | |
1077 | return 0; | |
1078 | } | |
1079 | ||
1080 | /********************************************************************* | |
1081 | * Video4Linux | |
1082 | *********************************************************************/ | |
1083 | ||
bec43661 | 1084 | static int stv_open(struct file *file) |
1da177e4 LT |
1085 | { |
1086 | struct video_device *dev = video_devdata(file); | |
1087 | struct usb_stv *stv680 = video_get_drvdata(dev); | |
1088 | int err = 0; | |
1089 | ||
1090 | /* we are called with the BKL held */ | |
d56dc612 | 1091 | lock_kernel(); |
1da177e4 LT |
1092 | stv680->user = 1; |
1093 | err = stv_init (stv680); /* main initialization routine for camera */ | |
1094 | ||
1095 | if (err >= 0) { | |
1096 | stv680->fbuf = rvmalloc (stv680->maxframesize * STV680_NUMFRAMES); | |
1097 | if (!stv680->fbuf) { | |
1098 | PDEBUG (0, "STV(e): Could not rvmalloc frame bufer"); | |
1099 | err = -ENOMEM; | |
1100 | } | |
1101 | file->private_data = dev; | |
1102 | } | |
1103 | if (err) | |
1104 | stv680->user = 0; | |
d56dc612 | 1105 | unlock_kernel(); |
1da177e4 LT |
1106 | |
1107 | return err; | |
1108 | } | |
1109 | ||
bec43661 | 1110 | static int stv_close(struct file *file) |
1da177e4 LT |
1111 | { |
1112 | struct video_device *dev = file->private_data; | |
1113 | struct usb_stv *stv680 = video_get_drvdata(dev); | |
1114 | int i; | |
1115 | ||
1116 | for (i = 0; i < STV680_NUMFRAMES; i++) | |
1117 | stv680->frame[i].grabstate = FRAME_UNUSED; | |
1118 | if (stv680->streaming) | |
1119 | stv680_stop_stream (stv680); | |
1120 | ||
1121 | if ((i = stv_stop_video (stv680)) < 0) | |
1122 | PDEBUG (1, "STV(e): stop_video failed in stv_close"); | |
1123 | ||
1124 | rvfree (stv680->fbuf, stv680->maxframesize * STV680_NUMFRAMES); | |
1125 | stv680->user = 0; | |
1126 | ||
1127 | if (stv680->removed) { | |
f9101210 | 1128 | kfree(stv680); |
1da177e4 LT |
1129 | stv680 = NULL; |
1130 | PDEBUG (0, "STV(i): device unregistered"); | |
1131 | } | |
1132 | file->private_data = NULL; | |
1133 | return 0; | |
1134 | } | |
1135 | ||
069b7479 | 1136 | static long stv680_do_ioctl(struct file *file, unsigned int cmd, void *arg) |
1da177e4 LT |
1137 | { |
1138 | struct video_device *vdev = file->private_data; | |
1139 | struct usb_stv *stv680 = video_get_drvdata(vdev); | |
1140 | ||
1141 | if (!stv680->udev) | |
1142 | return -EIO; | |
1143 | ||
1144 | switch (cmd) { | |
1145 | case VIDIOCGCAP:{ | |
1146 | struct video_capability *b = arg; | |
1147 | ||
1148 | strcpy (b->name, stv680->camera_name); | |
1149 | b->type = VID_TYPE_CAPTURE; | |
1150 | b->channels = 1; | |
1151 | b->audios = 0; | |
1152 | b->maxwidth = stv680->maxwidth; | |
1153 | b->maxheight = stv680->maxheight; | |
1154 | b->minwidth = stv680->maxwidth / 2; | |
1155 | b->minheight = stv680->maxheight / 2; | |
1156 | return 0; | |
1157 | } | |
1158 | case VIDIOCGCHAN:{ | |
1159 | struct video_channel *v = arg; | |
1160 | ||
1161 | if (v->channel != 0) | |
1162 | return -EINVAL; | |
1163 | v->flags = 0; | |
1164 | v->tuners = 0; | |
1165 | v->type = VIDEO_TYPE_CAMERA; | |
1166 | strcpy (v->name, "STV Camera"); | |
1167 | return 0; | |
1168 | } | |
1169 | case VIDIOCSCHAN:{ | |
1170 | struct video_channel *v = arg; | |
1171 | if (v->channel != 0) | |
1172 | return -EINVAL; | |
1173 | return 0; | |
1174 | } | |
1175 | case VIDIOCGPICT:{ | |
1176 | struct video_picture *p = arg; | |
1177 | ||
1178 | stv680_get_pict (stv680, p); | |
1179 | return 0; | |
1180 | } | |
1181 | case VIDIOCSPICT:{ | |
1182 | struct video_picture *p = arg; | |
1183 | ||
1184 | if (stv680_set_pict (stv680, p)) | |
1185 | return -EINVAL; | |
1186 | return 0; | |
1187 | } | |
1188 | case VIDIOCSWIN:{ | |
1189 | struct video_window *vw = arg; | |
1190 | ||
1191 | if (vw->flags) | |
1192 | return -EINVAL; | |
1193 | if (vw->clipcount) | |
1194 | return -EINVAL; | |
1195 | if (vw->width != stv680->vwidth) { | |
1196 | if (stv680_set_size (stv680, vw->width, vw->height)) { | |
1197 | PDEBUG (2, "STV(e): failed (from user) set size in VIDIOCSWIN"); | |
1198 | return -EINVAL; | |
1199 | } | |
1200 | } | |
1201 | return 0; | |
1202 | } | |
1203 | case VIDIOCGWIN:{ | |
1204 | struct video_window *vw = arg; | |
1205 | ||
1206 | vw->x = 0; /* FIXME */ | |
1207 | vw->y = 0; | |
1208 | vw->chromakey = 0; | |
1209 | vw->flags = 0; | |
1210 | vw->clipcount = 0; | |
1211 | vw->width = stv680->vwidth; | |
1212 | vw->height = stv680->vheight; | |
1213 | return 0; | |
1214 | } | |
1215 | case VIDIOCGMBUF:{ | |
1216 | struct video_mbuf *vm = arg; | |
1217 | int i; | |
1218 | ||
1219 | memset (vm, 0, sizeof (*vm)); | |
1220 | vm->size = STV680_NUMFRAMES * stv680->maxframesize; | |
1221 | vm->frames = STV680_NUMFRAMES; | |
1222 | for (i = 0; i < STV680_NUMFRAMES; i++) | |
1223 | vm->offsets[i] = stv680->maxframesize * i; | |
1224 | return 0; | |
1225 | } | |
1226 | case VIDIOCMCAPTURE:{ | |
1227 | struct video_mmap *vm = arg; | |
1228 | ||
1229 | if (vm->format != STV_VIDEO_PALETTE) { | |
1230 | PDEBUG (2, "STV(i): VIDIOCMCAPTURE vm.format (%i) != VIDEO_PALETTE (%i)", | |
1231 | vm->format, STV_VIDEO_PALETTE); | |
1232 | if ((vm->format == 3) && (swapRGB_on == 0)) { | |
1233 | PDEBUG (2, "STV(i): VIDIOCMCAPTURE swapRGB is (auto) ON"); | |
1234 | /* this may fix those apps (e.g., xawtv) that want BGR */ | |
1235 | swapRGB = 1; | |
1236 | } | |
1237 | return -EINVAL; | |
1238 | } | |
1239 | if (vm->frame >= STV680_NUMFRAMES) { | |
1240 | PDEBUG (2, "STV(e): VIDIOCMCAPTURE vm.frame > NUMFRAMES"); | |
1241 | return -EINVAL; | |
1242 | } | |
1243 | if ((stv680->frame[vm->frame].grabstate == FRAME_ERROR) | |
1244 | || (stv680->frame[vm->frame].grabstate == FRAME_GRABBING)) { | |
1245 | PDEBUG (2, "STV(e): VIDIOCMCAPTURE grabstate (%i) error", | |
1246 | stv680->frame[vm->frame].grabstate); | |
1247 | return -EBUSY; | |
1248 | } | |
1249 | /* Is this according to the v4l spec??? */ | |
1250 | if (stv680->vwidth != vm->width) { | |
1251 | if (stv680_set_size (stv680, vm->width, vm->height)) { | |
1252 | PDEBUG (2, "STV(e): VIDIOCMCAPTURE set_size failed"); | |
1253 | return -EINVAL; | |
1254 | } | |
1255 | } | |
1256 | stv680->frame[vm->frame].grabstate = FRAME_READY; | |
1257 | ||
1258 | if (!stv680->streaming) | |
1259 | stv680_start_stream (stv680); | |
1260 | ||
1261 | return 0; | |
1262 | } | |
1263 | case VIDIOCSYNC:{ | |
1264 | int *frame = arg; | |
1265 | int ret = 0; | |
1266 | ||
1267 | if (*frame < 0 || *frame >= STV680_NUMFRAMES) { | |
1268 | PDEBUG (2, "STV(e): Bad frame # in VIDIOCSYNC"); | |
1269 | return -EINVAL; | |
1270 | } | |
1271 | ret = stv680_newframe (stv680, *frame); | |
1272 | stv680->frame[*frame].grabstate = FRAME_UNUSED; | |
1273 | return ret; | |
1274 | } | |
1275 | case VIDIOCGFBUF:{ | |
1276 | struct video_buffer *vb = arg; | |
1277 | ||
1278 | memset (vb, 0, sizeof (*vb)); | |
1279 | return 0; | |
1280 | } | |
1281 | case VIDIOCKEY: | |
1282 | return 0; | |
1283 | case VIDIOCCAPTURE: | |
1284 | { | |
1285 | PDEBUG (2, "STV(e): VIDIOCCAPTURE failed"); | |
1286 | return -EINVAL; | |
1287 | } | |
1288 | case VIDIOCSFBUF: | |
1289 | case VIDIOCGTUNER: | |
1290 | case VIDIOCSTUNER: | |
1291 | case VIDIOCGFREQ: | |
1292 | case VIDIOCSFREQ: | |
1293 | case VIDIOCGAUDIO: | |
1294 | case VIDIOCSAUDIO: | |
1295 | return -EINVAL; | |
1296 | default: | |
1297 | return -ENOIOCTLCMD; | |
1298 | } /* end switch */ | |
1299 | ||
1300 | return 0; | |
1301 | } | |
1302 | ||
069b7479 | 1303 | static long stv680_ioctl(struct file *file, |
1da177e4 LT |
1304 | unsigned int cmd, unsigned long arg) |
1305 | { | |
f473bf76 | 1306 | return video_usercopy(file, cmd, arg, stv680_do_ioctl); |
1da177e4 LT |
1307 | } |
1308 | ||
1309 | static int stv680_mmap (struct file *file, struct vm_area_struct *vma) | |
1310 | { | |
1311 | struct video_device *dev = file->private_data; | |
1312 | struct usb_stv *stv680 = video_get_drvdata(dev); | |
1313 | unsigned long start = vma->vm_start; | |
1314 | unsigned long size = vma->vm_end-vma->vm_start; | |
1315 | unsigned long page, pos; | |
1316 | ||
4186ecf8 | 1317 | mutex_lock(&stv680->lock); |
1da177e4 LT |
1318 | |
1319 | if (stv680->udev == NULL) { | |
4186ecf8 | 1320 | mutex_unlock(&stv680->lock); |
1da177e4 LT |
1321 | return -EIO; |
1322 | } | |
1323 | if (size > (((STV680_NUMFRAMES * stv680->maxframesize) + PAGE_SIZE - 1) | |
1324 | & ~(PAGE_SIZE - 1))) { | |
4186ecf8 | 1325 | mutex_unlock(&stv680->lock); |
1da177e4 LT |
1326 | return -EINVAL; |
1327 | } | |
1328 | pos = (unsigned long) stv680->fbuf; | |
1329 | while (size > 0) { | |
1330 | page = vmalloc_to_pfn((void *)pos); | |
1331 | if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) { | |
4186ecf8 | 1332 | mutex_unlock(&stv680->lock); |
1da177e4 LT |
1333 | return -EAGAIN; |
1334 | } | |
1335 | start += PAGE_SIZE; | |
1336 | pos += PAGE_SIZE; | |
1337 | if (size > PAGE_SIZE) | |
1338 | size -= PAGE_SIZE; | |
1339 | else | |
1340 | size = 0; | |
1341 | } | |
4186ecf8 | 1342 | mutex_unlock(&stv680->lock); |
1da177e4 LT |
1343 | |
1344 | return 0; | |
1345 | } | |
1346 | ||
1347 | static ssize_t stv680_read (struct file *file, char __user *buf, | |
1348 | size_t count, loff_t *ppos) | |
1349 | { | |
1350 | struct video_device *dev = file->private_data; | |
1351 | unsigned long int realcount = count; | |
1352 | int ret = 0; | |
1353 | struct usb_stv *stv680 = video_get_drvdata(dev); | |
1354 | unsigned long int i; | |
1355 | ||
1356 | if (STV680_NUMFRAMES != 2) { | |
1357 | PDEBUG (0, "STV(e): STV680_NUMFRAMES needs to be 2!"); | |
1358 | return -1; | |
1359 | } | |
1360 | if (stv680->udev == NULL) | |
1361 | return -EIO; | |
1362 | if (realcount > (stv680->vwidth * stv680->vheight * 3)) | |
1363 | realcount = stv680->vwidth * stv680->vheight * 3; | |
1364 | ||
1365 | /* Shouldn't happen: */ | |
1366 | if (stv680->frame[0].grabstate == FRAME_GRABBING) { | |
1367 | PDEBUG (2, "STV(e): FRAME_GRABBING in stv680_read"); | |
1368 | return -EBUSY; | |
1369 | } | |
1370 | stv680->frame[0].grabstate = FRAME_READY; | |
1371 | stv680->frame[1].grabstate = FRAME_UNUSED; | |
1372 | stv680->curframe = 0; | |
1373 | ||
1374 | if (!stv680->streaming) | |
1375 | stv680_start_stream (stv680); | |
1376 | ||
1377 | if (!stv680->streaming) { | |
1378 | ret = stv680_newframe (stv680, 0); /* ret should = 0 */ | |
1379 | } | |
1380 | ||
1381 | ret = stv680_newframe (stv680, 0); | |
1382 | ||
1383 | if (!ret) { | |
1384 | if ((i = copy_to_user (buf, stv680->frame[0].data, realcount)) != 0) { | |
1385 | PDEBUG (2, "STV(e): copy_to_user frame 0 failed, ret count = %li", i); | |
1386 | return -EFAULT; | |
1387 | } | |
1388 | } else { | |
1389 | realcount = ret; | |
1390 | } | |
1391 | stv680->frame[0].grabstate = FRAME_UNUSED; | |
1392 | return realcount; | |
1393 | } /* stv680_read */ | |
1394 | ||
bec43661 | 1395 | static const struct v4l2_file_operations stv680_fops = { |
1da177e4 LT |
1396 | .owner = THIS_MODULE, |
1397 | .open = stv_open, | |
1398 | .release = stv_close, | |
1399 | .read = stv680_read, | |
1400 | .mmap = stv680_mmap, | |
1401 | .ioctl = stv680_ioctl, | |
1da177e4 LT |
1402 | }; |
1403 | static struct video_device stv680_template = { | |
1da177e4 | 1404 | .name = "STV0680 USB camera", |
1da177e4 LT |
1405 | .fops = &stv680_fops, |
1406 | .release = video_device_release, | |
1407 | .minor = -1, | |
1408 | }; | |
1409 | ||
1410 | static int stv680_probe (struct usb_interface *intf, const struct usb_device_id *id) | |
1411 | { | |
1412 | struct usb_device *dev = interface_to_usbdev(intf); | |
1413 | struct usb_host_interface *interface; | |
1414 | struct usb_stv *stv680 = NULL; | |
1415 | char *camera_name = NULL; | |
1416 | int retval = 0; | |
1417 | ||
1418 | /* We don't handle multi-config cameras */ | |
1419 | if (dev->descriptor.bNumConfigurations != 1) { | |
1420 | PDEBUG (0, "STV(e): Number of Configurations != 1"); | |
1421 | return -ENODEV; | |
1422 | } | |
1423 | ||
1424 | interface = &intf->altsetting[0]; | |
1425 | /* Is it a STV680? */ | |
1426 | if ((le16_to_cpu(dev->descriptor.idVendor) == USB_PENCAM_VENDOR_ID) && | |
1427 | (le16_to_cpu(dev->descriptor.idProduct) == USB_PENCAM_PRODUCT_ID)) { | |
1428 | camera_name = "STV0680"; | |
1429 | PDEBUG (0, "STV(i): STV0680 camera found."); | |
16367877 KJ |
1430 | } else if ((le16_to_cpu(dev->descriptor.idVendor) == USB_CREATIVEGOMINI_VENDOR_ID) && |
1431 | (le16_to_cpu(dev->descriptor.idProduct) == USB_CREATIVEGOMINI_PRODUCT_ID)) { | |
1432 | camera_name = "Creative WebCam Go Mini"; | |
1433 | PDEBUG (0, "STV(i): Creative WebCam Go Mini found."); | |
1da177e4 | 1434 | } else { |
16367877 KJ |
1435 | PDEBUG (0, "STV(e): Vendor/Product ID do not match STV0680 or Creative WebCam Go Mini values."); |
1436 | PDEBUG (0, "STV(e): Check that the STV0680 or Creative WebCam Go Mini camera is connected to the computer."); | |
1da177e4 LT |
1437 | retval = -ENODEV; |
1438 | goto error; | |
1439 | } | |
1440 | /* We found one */ | |
80b6ca48 | 1441 | if ((stv680 = kzalloc (sizeof (*stv680), GFP_KERNEL)) == NULL) { |
1da177e4 LT |
1442 | PDEBUG (0, "STV(e): couldn't kmalloc stv680 struct."); |
1443 | retval = -ENOMEM; | |
1444 | goto error; | |
1445 | } | |
1446 | ||
1da177e4 LT |
1447 | stv680->udev = dev; |
1448 | stv680->camera_name = camera_name; | |
1449 | ||
1450 | stv680->vdev = video_device_alloc(); | |
1451 | if (!stv680->vdev) { | |
1452 | retval = -ENOMEM; | |
1453 | goto error; | |
1454 | } | |
1455 | memcpy(stv680->vdev, &stv680_template, sizeof(stv680_template)); | |
5e85e732 | 1456 | stv680->vdev->parent = &intf->dev; |
1da177e4 LT |
1457 | video_set_drvdata(stv680->vdev, stv680); |
1458 | ||
1459 | memcpy (stv680->vdev->name, stv680->camera_name, strlen (stv680->camera_name)); | |
1460 | init_waitqueue_head (&stv680->wq); | |
4186ecf8 | 1461 | mutex_init (&stv680->lock); |
1da177e4 LT |
1462 | wmb (); |
1463 | ||
dc60de33 | 1464 | if (video_register_device(stv680->vdev, VFL_TYPE_GRABBER, video_nr) < 0) { |
1da177e4 LT |
1465 | PDEBUG (0, "STV(e): video_register_device failed"); |
1466 | retval = -EIO; | |
1467 | goto error_vdev; | |
1468 | } | |
c6330fb8 HV |
1469 | PDEBUG(0, "STV(i): registered new video device: video%d", |
1470 | stv680->vdev->num); | |
1da177e4 LT |
1471 | |
1472 | usb_set_intfdata (intf, stv680); | |
2444a2fc JG |
1473 | retval = stv680_create_sysfs_files(stv680->vdev); |
1474 | if (retval) | |
1475 | goto error_unreg; | |
1da177e4 LT |
1476 | return 0; |
1477 | ||
2444a2fc JG |
1478 | error_unreg: |
1479 | video_unregister_device(stv680->vdev); | |
1da177e4 LT |
1480 | error_vdev: |
1481 | video_device_release(stv680->vdev); | |
1482 | error: | |
1483 | kfree(stv680); | |
1484 | return retval; | |
1485 | } | |
1486 | ||
1487 | static inline void usb_stv680_remove_disconnected (struct usb_stv *stv680) | |
1488 | { | |
1489 | int i; | |
1490 | ||
1491 | stv680->udev = NULL; | |
1492 | stv680->frame[0].grabstate = FRAME_ERROR; | |
1493 | stv680->frame[1].grabstate = FRAME_ERROR; | |
1494 | stv680->streaming = 0; | |
1495 | ||
1496 | wake_up_interruptible (&stv680->wq); | |
1497 | ||
1498 | for (i = 0; i < STV680_NUMSBUF; i++) | |
1499 | if (stv680->urb[i]) { | |
1500 | usb_kill_urb (stv680->urb[i]); | |
1501 | usb_free_urb (stv680->urb[i]); | |
1502 | stv680->urb[i] = NULL; | |
f9101210 | 1503 | kfree(stv680->sbuf[i].data); |
1da177e4 LT |
1504 | } |
1505 | for (i = 0; i < STV680_NUMSCRATCH; i++) | |
f9101210 | 1506 | kfree(stv680->scratch[i].data); |
1da177e4 LT |
1507 | PDEBUG (0, "STV(i): %s disconnected", stv680->camera_name); |
1508 | ||
1509 | /* Free the memory */ | |
f9101210 | 1510 | kfree(stv680); |
1da177e4 LT |
1511 | } |
1512 | ||
1513 | static void stv680_disconnect (struct usb_interface *intf) | |
1514 | { | |
1515 | struct usb_stv *stv680 = usb_get_intfdata (intf); | |
1516 | ||
1517 | usb_set_intfdata (intf, NULL); | |
1518 | ||
1519 | if (stv680) { | |
1520 | /* We don't want people trying to open up the device */ | |
1521 | if (stv680->vdev) { | |
1522 | stv680_remove_sysfs_files(stv680->vdev); | |
1523 | video_unregister_device(stv680->vdev); | |
1524 | stv680->vdev = NULL; | |
1525 | } | |
1526 | if (!stv680->user) { | |
1527 | usb_stv680_remove_disconnected (stv680); | |
1528 | } else { | |
1529 | stv680->removed = 1; | |
1530 | } | |
1531 | } | |
1532 | } | |
1533 | ||
1534 | static struct usb_driver stv680_driver = { | |
1da177e4 LT |
1535 | .name = "stv680", |
1536 | .probe = stv680_probe, | |
1537 | .disconnect = stv680_disconnect, | |
1538 | .id_table = device_table | |
1539 | }; | |
1540 | ||
1541 | /******************************************************************** | |
1542 | * Module routines | |
1543 | ********************************************************************/ | |
1544 | ||
1545 | static int __init usb_stv680_init (void) | |
1546 | { | |
1547 | if (usb_register (&stv680_driver) < 0) { | |
1548 | PDEBUG (0, "STV(e): Could not setup STV0680 driver"); | |
1549 | return -1; | |
1550 | } | |
1551 | PDEBUG (0, "STV(i): usb camera driver version %s registering", DRIVER_VERSION); | |
1552 | ||
a482f327 GKH |
1553 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
1554 | DRIVER_DESC "\n"); | |
1da177e4 LT |
1555 | return 0; |
1556 | } | |
1557 | ||
1558 | static void __exit usb_stv680_exit (void) | |
1559 | { | |
1560 | usb_deregister (&stv680_driver); | |
1561 | PDEBUG (0, "STV(i): driver deregistered"); | |
1562 | } | |
1563 | ||
1564 | module_init (usb_stv680_init); | |
1565 | module_exit (usb_stv680_exit); |