Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Endpoints (formerly known as AOX) se401 USB Camera Driver |
| 3 | * |
| 4 | * Copyright (c) 2000 Jeroen B. Vreeken (pe1rxq@amsat.org) |
| 5 | * |
| 6 | * Still somewhat based on the Linux ov511 driver. |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 7 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your |
| 11 | * option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, but |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 15 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 16 | * for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software Foundation, |
| 20 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 21 | * |
| 22 | * |
| 23 | * Thanks to Endpoints Inc. (www.endpoints.com) for making documentation on |
| 24 | * their chipset available and supporting me while writing this driver. |
| 25 | * - Jeroen Vreeken |
| 26 | */ |
| 27 | |
| 28 | static const char version[] = "0.24"; |
| 29 | |
| 30 | #include <linux/config.h> |
| 31 | #include <linux/module.h> |
| 32 | #include <linux/init.h> |
| 33 | #include <linux/vmalloc.h> |
| 34 | #include <linux/slab.h> |
| 35 | #include <linux/pagemap.h> |
| 36 | #include <linux/usb.h> |
| 37 | #include "se401.h" |
| 38 | |
| 39 | static int flickerless=0; |
| 40 | static int video_nr = -1; |
| 41 | |
| 42 | static struct usb_device_id device_table [] = { |
| 43 | { USB_DEVICE(0x03e8, 0x0004) },/* Endpoints/Aox SE401 */ |
| 44 | { USB_DEVICE(0x0471, 0x030b) },/* Philips PCVC665K */ |
| 45 | { USB_DEVICE(0x047d, 0x5001) },/* Kensington 67014 */ |
| 46 | { USB_DEVICE(0x047d, 0x5002) },/* Kensington 6701(5/7) */ |
| 47 | { USB_DEVICE(0x047d, 0x5003) },/* Kensington 67016 */ |
| 48 | { } |
| 49 | }; |
| 50 | |
| 51 | MODULE_DEVICE_TABLE(usb, device_table); |
| 52 | |
| 53 | MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>"); |
| 54 | MODULE_DESCRIPTION("SE401 USB Camera Driver"); |
| 55 | MODULE_LICENSE("GPL"); |
| 56 | module_param(flickerless, int, 0); |
| 57 | MODULE_PARM_DESC(flickerless, "Net frequency to adjust exposure time to (0/50/60)"); |
| 58 | module_param(video_nr, int, 0); |
| 59 | |
| 60 | static struct usb_driver se401_driver; |
| 61 | |
| 62 | |
| 63 | /********************************************************************** |
| 64 | * |
| 65 | * Memory management |
| 66 | * |
| 67 | **********************************************************************/ |
| 68 | static void *rvmalloc(unsigned long size) |
| 69 | { |
| 70 | void *mem; |
| 71 | unsigned long adr; |
| 72 | |
| 73 | size = PAGE_ALIGN(size); |
| 74 | mem = vmalloc_32(size); |
| 75 | if (!mem) |
| 76 | return NULL; |
| 77 | |
| 78 | memset(mem, 0, size); /* Clear the ram out, no junk to the user */ |
| 79 | adr = (unsigned long) mem; |
| 80 | while (size > 0) { |
| 81 | SetPageReserved(vmalloc_to_page((void *)adr)); |
| 82 | adr += PAGE_SIZE; |
| 83 | size -= PAGE_SIZE; |
| 84 | } |
| 85 | |
| 86 | return mem; |
| 87 | } |
| 88 | |
| 89 | static void rvfree(void *mem, unsigned long size) |
| 90 | { |
| 91 | unsigned long adr; |
| 92 | |
| 93 | if (!mem) |
| 94 | return; |
| 95 | |
| 96 | adr = (unsigned long) mem; |
| 97 | while ((long) size > 0) { |
| 98 | ClearPageReserved(vmalloc_to_page((void *)adr)); |
| 99 | adr += PAGE_SIZE; |
| 100 | size -= PAGE_SIZE; |
| 101 | } |
| 102 | vfree(mem); |
| 103 | } |
| 104 | |
| 105 | |
| 106 | |
| 107 | /**************************************************************************** |
| 108 | * |
| 109 | * se401 register read/write functions |
| 110 | * |
| 111 | ***************************************************************************/ |
| 112 | |
| 113 | static int se401_sndctrl(int set, struct usb_se401 *se401, unsigned short req, |
| 114 | unsigned short value, unsigned char *cp, int size) |
| 115 | { |
| 116 | return usb_control_msg ( |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 117 | se401->dev, |
| 118 | set ? usb_sndctrlpipe(se401->dev, 0) : usb_rcvctrlpipe(se401->dev, 0), |
| 119 | req, |
| 120 | (set ? USB_DIR_OUT : USB_DIR_IN) | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 121 | value, |
| 122 | 0, |
| 123 | cp, |
| 124 | size, |
| 125 | 1000 |
| 126 | ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | } |
| 128 | |
| 129 | static int se401_set_feature(struct usb_se401 *se401, unsigned short selector, |
| 130 | unsigned short param) |
| 131 | { |
| 132 | /* specs say that the selector (address) should go in the value field |
| 133 | and the param in index, but in the logs of the windows driver they do |
| 134 | this the other way around... |
| 135 | */ |
| 136 | return usb_control_msg ( |
| 137 | se401->dev, |
| 138 | usb_sndctrlpipe(se401->dev, 0), |
| 139 | SE401_REQ_SET_EXT_FEATURE, |
| 140 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 141 | param, |
| 142 | selector, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 143 | NULL, |
| 144 | 0, |
| 145 | 1000 |
| 146 | ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | } |
| 148 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 149 | static unsigned short se401_get_feature(struct usb_se401 *se401, |
| 150 | unsigned short selector) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | { |
| 152 | /* For 'set' the selecetor should be in index, not sure if the spec is |
| 153 | wrong here to.... |
| 154 | */ |
| 155 | unsigned char cp[2]; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 156 | usb_control_msg ( |
| 157 | se401->dev, |
| 158 | usb_rcvctrlpipe(se401->dev, 0), |
| 159 | SE401_REQ_GET_EXT_FEATURE, |
| 160 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 161 | 0, |
| 162 | selector, |
| 163 | cp, |
| 164 | 2, |
| 165 | 1000 |
| 166 | ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | return cp[0]+cp[1]*256; |
| 168 | } |
| 169 | |
| 170 | /**************************************************************************** |
| 171 | * |
| 172 | * Camera control |
| 173 | * |
| 174 | ***************************************************************************/ |
| 175 | |
| 176 | |
| 177 | static int se401_send_pict(struct usb_se401 *se401) |
| 178 | { |
| 179 | se401_set_feature(se401, HV7131_REG_TITL, se401->expose_l);/* integration time low */ |
| 180 | se401_set_feature(se401, HV7131_REG_TITM, se401->expose_m);/* integration time mid */ |
| 181 | se401_set_feature(se401, HV7131_REG_TITU, se401->expose_h);/* integration time mid */ |
| 182 | se401_set_feature(se401, HV7131_REG_ARLV, se401->resetlevel);/* reset level value */ |
| 183 | se401_set_feature(se401, HV7131_REG_ARCG, se401->rgain);/* red color gain */ |
| 184 | se401_set_feature(se401, HV7131_REG_AGCG, se401->ggain);/* green color gain */ |
| 185 | se401_set_feature(se401, HV7131_REG_ABCG, se401->bgain);/* blue color gain */ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 186 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | static void se401_set_exposure(struct usb_se401 *se401, int brightness) |
| 191 | { |
| 192 | int integration=brightness<<5; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 193 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | if (flickerless==50) { |
| 195 | integration=integration-integration%106667; |
| 196 | } |
| 197 | if (flickerless==60) { |
| 198 | integration=integration-integration%88889; |
| 199 | } |
| 200 | se401->brightness=integration>>5; |
| 201 | se401->expose_h=(integration>>16)&0xff; |
| 202 | se401->expose_m=(integration>>8)&0xff; |
| 203 | se401->expose_l=integration&0xff; |
| 204 | } |
| 205 | |
| 206 | static int se401_get_pict(struct usb_se401 *se401, struct video_picture *p) |
| 207 | { |
| 208 | p->brightness=se401->brightness; |
| 209 | if (se401->enhance) { |
| 210 | p->whiteness=32768; |
| 211 | } else { |
| 212 | p->whiteness=0; |
| 213 | } |
| 214 | p->colour=65535; |
| 215 | p->contrast=65535; |
| 216 | p->hue=se401->rgain<<10; |
| 217 | p->palette=se401->palette; |
| 218 | p->depth=3; /* rgb24 */ |
| 219 | return 0; |
| 220 | } |
| 221 | |
| 222 | |
| 223 | static int se401_set_pict(struct usb_se401 *se401, struct video_picture *p) |
| 224 | { |
| 225 | if (p->palette != VIDEO_PALETTE_RGB24) |
| 226 | return 1; |
| 227 | se401->palette=p->palette; |
| 228 | if (p->hue!=se401->hue) { |
| 229 | se401->rgain= p->hue>>10; |
| 230 | se401->bgain= 0x40-(p->hue>>10); |
| 231 | se401->hue=p->hue; |
| 232 | } |
| 233 | if (p->brightness!=se401->brightness) { |
| 234 | se401_set_exposure(se401, p->brightness); |
| 235 | } |
| 236 | if (p->whiteness>=32768) { |
| 237 | se401->enhance=1; |
| 238 | } else { |
| 239 | se401->enhance=0; |
| 240 | } |
| 241 | se401_send_pict(se401); |
| 242 | se401_send_pict(se401); |
| 243 | return 0; |
| 244 | } |
| 245 | |
| 246 | /* |
| 247 | Hyundai have some really nice docs about this and other sensor related |
| 248 | stuff on their homepage: www.hei.co.kr |
| 249 | */ |
| 250 | static void se401_auto_resetlevel(struct usb_se401 *se401) |
| 251 | { |
| 252 | unsigned int ahrc, alrc; |
| 253 | int oldreset=se401->resetlevel; |
| 254 | |
| 255 | /* For some reason this normally read-only register doesn't get reset |
| 256 | to zero after reading them just once... |
| 257 | */ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 258 | se401_get_feature(se401, HV7131_REG_HIREFNOH); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | se401_get_feature(se401, HV7131_REG_HIREFNOL); |
| 260 | se401_get_feature(se401, HV7131_REG_LOREFNOH); |
| 261 | se401_get_feature(se401, HV7131_REG_LOREFNOL); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 262 | ahrc=256*se401_get_feature(se401, HV7131_REG_HIREFNOH) + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | se401_get_feature(se401, HV7131_REG_HIREFNOL); |
| 264 | alrc=256*se401_get_feature(se401, HV7131_REG_LOREFNOH) + |
| 265 | se401_get_feature(se401, HV7131_REG_LOREFNOL); |
| 266 | |
| 267 | /* Not an exact science, but it seems to work pretty well... */ |
| 268 | if (alrc > 10) { |
| 269 | while (alrc>=10 && se401->resetlevel < 63) { |
| 270 | se401->resetlevel++; |
| 271 | alrc /=2; |
| 272 | } |
| 273 | } else if (ahrc > 20) { |
| 274 | while (ahrc>=20 && se401->resetlevel > 0) { |
| 275 | se401->resetlevel--; |
| 276 | ahrc /=2; |
| 277 | } |
| 278 | } |
| 279 | if (se401->resetlevel!=oldreset) |
| 280 | se401_set_feature(se401, HV7131_REG_ARLV, se401->resetlevel); |
| 281 | |
| 282 | return; |
| 283 | } |
| 284 | |
| 285 | /* irq handler for snapshot button */ |
| 286 | static void se401_button_irq(struct urb *urb, struct pt_regs *regs) |
| 287 | { |
| 288 | struct usb_se401 *se401 = urb->context; |
| 289 | int status; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 290 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | if (!se401->dev) { |
| 292 | info("ohoh: device vapourished"); |
| 293 | return; |
| 294 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 295 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | switch (urb->status) { |
| 297 | case 0: |
| 298 | /* success */ |
| 299 | break; |
| 300 | case -ECONNRESET: |
| 301 | case -ENOENT: |
| 302 | case -ESHUTDOWN: |
| 303 | /* this urb is terminated, clean up */ |
| 304 | dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status); |
| 305 | return; |
| 306 | default: |
| 307 | dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status); |
| 308 | goto exit; |
| 309 | } |
| 310 | |
| 311 | if (urb->actual_length >=2) { |
| 312 | if (se401->button) |
| 313 | se401->buttonpressed=1; |
| 314 | } |
| 315 | exit: |
| 316 | status = usb_submit_urb (urb, GFP_ATOMIC); |
| 317 | if (status) |
| 318 | err ("%s - usb_submit_urb failed with result %d", |
| 319 | __FUNCTION__, status); |
| 320 | } |
| 321 | |
| 322 | static void se401_video_irq(struct urb *urb, struct pt_regs *regs) |
| 323 | { |
| 324 | struct usb_se401 *se401 = urb->context; |
| 325 | int length = urb->actual_length; |
| 326 | |
| 327 | /* ohoh... */ |
| 328 | if (!se401->streaming) |
| 329 | return; |
| 330 | |
| 331 | if (!se401->dev) { |
| 332 | info ("ohoh: device vapourished"); |
| 333 | return; |
| 334 | } |
| 335 | |
| 336 | /* 0 sized packets happen if we are to fast, but sometimes the camera |
| 337 | keeps sending them forever... |
| 338 | */ |
| 339 | if (length && !urb->status) { |
| 340 | se401->nullpackets=0; |
| 341 | switch(se401->scratch[se401->scratch_next].state) { |
| 342 | case BUFFER_READY: |
| 343 | case BUFFER_BUSY: { |
| 344 | se401->dropped++; |
| 345 | break; |
| 346 | } |
| 347 | case BUFFER_UNUSED: { |
| 348 | memcpy(se401->scratch[se401->scratch_next].data, (unsigned char *)urb->transfer_buffer, length); |
| 349 | se401->scratch[se401->scratch_next].state=BUFFER_READY; |
| 350 | se401->scratch[se401->scratch_next].offset=se401->bayeroffset; |
| 351 | se401->scratch[se401->scratch_next].length=length; |
| 352 | if (waitqueue_active(&se401->wq)) { |
| 353 | wake_up_interruptible(&se401->wq); |
| 354 | } |
| 355 | se401->scratch_overflow=0; |
| 356 | se401->scratch_next++; |
| 357 | if (se401->scratch_next>=SE401_NUMSCRATCH) |
| 358 | se401->scratch_next=0; |
| 359 | break; |
| 360 | } |
| 361 | } |
| 362 | se401->bayeroffset+=length; |
| 363 | if (se401->bayeroffset>=se401->cheight*se401->cwidth) { |
| 364 | se401->bayeroffset=0; |
| 365 | } |
| 366 | } else { |
| 367 | se401->nullpackets++; |
| 368 | if (se401->nullpackets > SE401_MAX_NULLPACKETS) { |
| 369 | if (waitqueue_active(&se401->wq)) { |
| 370 | wake_up_interruptible(&se401->wq); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 371 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | } |
| 373 | } |
| 374 | |
| 375 | /* Resubmit urb for new data */ |
| 376 | urb->status=0; |
| 377 | urb->dev=se401->dev; |
| 378 | if(usb_submit_urb(urb, GFP_KERNEL)) |
| 379 | info("urb burned down"); |
| 380 | return; |
| 381 | } |
| 382 | |
| 383 | static void se401_send_size(struct usb_se401 *se401, int width, int height) |
| 384 | { |
| 385 | int i=0; |
| 386 | int mode=0x03; /* No compression */ |
| 387 | int sendheight=height; |
| 388 | int sendwidth=width; |
| 389 | |
| 390 | /* JangGu compression can only be used with the camera supported sizes, |
| 391 | but bayer seems to work with any size that fits on the sensor. |
| 392 | We check if we can use compression with the current size with either |
| 393 | 4 or 16 times subcapturing, if not we use uncompressed bayer data |
| 394 | but this will result in cutouts of the maximum size.... |
| 395 | */ |
| 396 | while (i<se401->sizes && !(se401->width[i]==width && se401->height[i]==height)) |
| 397 | i++; |
| 398 | while (i<se401->sizes) { |
| 399 | if (se401->width[i]==width*2 && se401->height[i]==height*2) { |
| 400 | sendheight=se401->height[i]; |
| 401 | sendwidth=se401->width[i]; |
| 402 | mode=0x40; |
| 403 | } |
| 404 | if (se401->width[i]==width*4 && se401->height[i]==height*4) { |
| 405 | sendheight=se401->height[i]; |
| 406 | sendwidth=se401->width[i]; |
| 407 | mode=0x42; |
| 408 | } |
| 409 | i++; |
| 410 | } |
| 411 | |
| 412 | se401_sndctrl(1, se401, SE401_REQ_SET_WIDTH, sendwidth, NULL, 0); |
| 413 | se401_sndctrl(1, se401, SE401_REQ_SET_HEIGHT, sendheight, NULL, 0); |
| 414 | se401_set_feature(se401, SE401_OPERATINGMODE, mode); |
| 415 | |
| 416 | if (mode==0x03) { |
| 417 | se401->format=FMT_BAYER; |
| 418 | } else { |
| 419 | se401->format=FMT_JANGGU; |
| 420 | } |
| 421 | |
| 422 | return; |
| 423 | } |
| 424 | |
| 425 | /* |
| 426 | In this function se401_send_pict is called several times, |
| 427 | for some reason (depending on the state of the sensor and the phase of |
| 428 | the moon :) doing this only in either place doesn't always work... |
| 429 | */ |
| 430 | static int se401_start_stream(struct usb_se401 *se401) |
| 431 | { |
| 432 | struct urb *urb; |
| 433 | int err=0, i; |
| 434 | se401->streaming=1; |
| 435 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 436 | se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 1, NULL, 0); |
| 437 | se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 1, NULL, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | |
| 439 | /* Set picture settings */ |
| 440 | se401_set_feature(se401, HV7131_REG_MODE_B, 0x05);/*windowed + pix intg */ |
| 441 | se401_send_pict(se401); |
| 442 | |
| 443 | se401_send_size(se401, se401->cwidth, se401->cheight); |
| 444 | |
| 445 | se401_sndctrl(1, se401, SE401_REQ_START_CONTINUOUS_CAPTURE, 0, NULL, 0); |
| 446 | |
| 447 | /* Do some memory allocation */ |
| 448 | for (i=0; i<SE401_NUMFRAMES; i++) { |
| 449 | se401->frame[i].data=se401->fbuf + i * se401->maxframesize; |
| 450 | se401->frame[i].curpix=0; |
| 451 | } |
| 452 | for (i=0; i<SE401_NUMSBUF; i++) { |
| 453 | se401->sbuf[i].data=kmalloc(SE401_PACKETSIZE, GFP_KERNEL); |
| 454 | } |
| 455 | |
| 456 | se401->bayeroffset=0; |
| 457 | se401->scratch_next=0; |
| 458 | se401->scratch_use=0; |
| 459 | se401->scratch_overflow=0; |
| 460 | for (i=0; i<SE401_NUMSCRATCH; i++) { |
| 461 | se401->scratch[i].data=kmalloc(SE401_PACKETSIZE, GFP_KERNEL); |
| 462 | se401->scratch[i].state=BUFFER_UNUSED; |
| 463 | } |
| 464 | |
| 465 | for (i=0; i<SE401_NUMSBUF; i++) { |
| 466 | urb=usb_alloc_urb(0, GFP_KERNEL); |
| 467 | if(!urb) |
| 468 | return -ENOMEM; |
| 469 | |
| 470 | usb_fill_bulk_urb(urb, se401->dev, |
| 471 | usb_rcvbulkpipe(se401->dev, SE401_VIDEO_ENDPOINT), |
| 472 | se401->sbuf[i].data, SE401_PACKETSIZE, |
| 473 | se401_video_irq, |
| 474 | se401); |
| 475 | |
| 476 | se401->urb[i]=urb; |
| 477 | |
| 478 | err=usb_submit_urb(se401->urb[i], GFP_KERNEL); |
| 479 | if(err) |
| 480 | err("urb burned down"); |
| 481 | } |
| 482 | |
| 483 | se401->framecount=0; |
| 484 | |
| 485 | return 0; |
| 486 | } |
| 487 | |
| 488 | static int se401_stop_stream(struct usb_se401 *se401) |
| 489 | { |
| 490 | int i; |
| 491 | |
| 492 | if (!se401->streaming || !se401->dev) |
| 493 | return 1; |
| 494 | |
| 495 | se401->streaming=0; |
| 496 | |
| 497 | se401_sndctrl(1, se401, SE401_REQ_STOP_CONTINUOUS_CAPTURE, 0, NULL, 0); |
| 498 | |
| 499 | se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 0, NULL, 0); |
| 500 | se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 0, NULL, 0); |
| 501 | |
| 502 | for (i=0; i<SE401_NUMSBUF; i++) if (se401->urb[i]) { |
| 503 | usb_kill_urb(se401->urb[i]); |
| 504 | usb_free_urb(se401->urb[i]); |
| 505 | se401->urb[i]=NULL; |
| 506 | kfree(se401->sbuf[i].data); |
| 507 | } |
| 508 | for (i=0; i<SE401_NUMSCRATCH; i++) { |
| 509 | kfree(se401->scratch[i].data); |
| 510 | se401->scratch[i].data=NULL; |
| 511 | } |
| 512 | |
| 513 | return 0; |
| 514 | } |
| 515 | |
| 516 | static int se401_set_size(struct usb_se401 *se401, int width, int height) |
| 517 | { |
| 518 | int wasstreaming=se401->streaming; |
| 519 | /* Check to see if we need to change */ |
| 520 | if (se401->cwidth==width && se401->cheight==height) |
| 521 | return 0; |
| 522 | |
| 523 | /* Check for a valid mode */ |
| 524 | if (!width || !height) |
| 525 | return 1; |
| 526 | if ((width & 1) || (height & 1)) |
| 527 | return 1; |
| 528 | if (width>se401->width[se401->sizes-1]) |
| 529 | return 1; |
| 530 | if (height>se401->height[se401->sizes-1]) |
| 531 | return 1; |
| 532 | |
| 533 | /* Stop a current stream and start it again at the new size */ |
| 534 | if (wasstreaming) |
| 535 | se401_stop_stream(se401); |
| 536 | se401->cwidth=width; |
| 537 | se401->cheight=height; |
| 538 | if (wasstreaming) |
| 539 | se401_start_stream(se401); |
| 540 | return 0; |
| 541 | } |
| 542 | |
| 543 | |
| 544 | /**************************************************************************** |
| 545 | * |
| 546 | * Video Decoding |
| 547 | * |
| 548 | ***************************************************************************/ |
| 549 | |
| 550 | /* |
| 551 | This shouldn't really be done in a v4l driver.... |
| 552 | But it does make the image look a lot more usable. |
| 553 | Basically it lifts the dark pixels more than the light pixels. |
| 554 | */ |
| 555 | static inline void enhance_picture(unsigned char *frame, int len) |
| 556 | { |
| 557 | while (len--) { |
| 558 | *frame=(((*frame^255)*(*frame^255))/255)^255; |
| 559 | frame++; |
| 560 | } |
| 561 | } |
| 562 | |
| 563 | static inline void decode_JangGu_integrate(struct usb_se401 *se401, int data) |
| 564 | { |
| 565 | struct se401_frame *frame=&se401->frame[se401->curframe]; |
| 566 | int linelength=se401->cwidth*3; |
| 567 | |
| 568 | if (frame->curlinepix >= linelength) { |
| 569 | frame->curlinepix=0; |
| 570 | frame->curline+=linelength; |
| 571 | } |
| 572 | |
| 573 | /* First three are absolute, all others relative. |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 574 | * Format is rgb from right to left (mirrorred image), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | * we flip it to get bgr from left to right. */ |
| 576 | if (frame->curlinepix < 3) { |
| 577 | *(frame->curline-frame->curlinepix)=1+data*4; |
| 578 | } else { |
| 579 | *(frame->curline-frame->curlinepix)= |
| 580 | *(frame->curline-frame->curlinepix+3)+data*4; |
| 581 | } |
| 582 | frame->curlinepix++; |
| 583 | } |
| 584 | |
| 585 | static inline void decode_JangGu_vlc (struct usb_se401 *se401, unsigned char *data, int bit_exp, int packetlength) |
| 586 | { |
| 587 | int pos=0; |
| 588 | int vlc_cod=0; |
| 589 | int vlc_size=0; |
| 590 | int vlc_data=0; |
| 591 | int bit_cur; |
| 592 | int bit; |
| 593 | data+=4; |
| 594 | while (pos < packetlength) { |
| 595 | bit_cur=8; |
| 596 | while (bit_cur && bit_exp) { |
| 597 | bit=((*data)>>(bit_cur-1))&1; |
| 598 | if (!vlc_cod) { |
| 599 | if (bit) { |
| 600 | vlc_size++; |
| 601 | } else { |
| 602 | if (!vlc_size) { |
| 603 | decode_JangGu_integrate(se401, 0); |
| 604 | } else { |
| 605 | vlc_cod=2; |
| 606 | vlc_data=0; |
| 607 | } |
| 608 | } |
| 609 | } else { |
| 610 | if (vlc_cod==2) { |
| 611 | if (!bit) |
| 612 | vlc_data = -(1<<vlc_size) + 1; |
| 613 | vlc_cod--; |
| 614 | } |
| 615 | vlc_size--; |
| 616 | vlc_data+=bit<<vlc_size; |
| 617 | if (!vlc_size) { |
| 618 | decode_JangGu_integrate(se401, vlc_data); |
| 619 | vlc_cod=0; |
| 620 | } |
| 621 | } |
| 622 | bit_cur--; |
| 623 | bit_exp--; |
| 624 | } |
| 625 | pos++; |
| 626 | data++; |
| 627 | } |
| 628 | } |
| 629 | |
| 630 | static inline void decode_JangGu (struct usb_se401 *se401, struct se401_scratch *buffer) |
| 631 | { |
| 632 | unsigned char *data=buffer->data; |
| 633 | int len=buffer->length; |
| 634 | int bit_exp=0, pix_exp=0, frameinfo=0, packetlength=0, size; |
| 635 | int datapos=0; |
| 636 | |
| 637 | /* New image? */ |
| 638 | if (!se401->frame[se401->curframe].curpix) { |
| 639 | se401->frame[se401->curframe].curlinepix=0; |
| 640 | se401->frame[se401->curframe].curline= |
| 641 | se401->frame[se401->curframe].data+ |
| 642 | se401->cwidth*3-1; |
| 643 | if (se401->frame[se401->curframe].grabstate==FRAME_READY) |
| 644 | se401->frame[se401->curframe].grabstate=FRAME_GRABBING; |
| 645 | se401->vlcdatapos=0; |
| 646 | } |
| 647 | while (datapos < len) { |
| 648 | size=1024-se401->vlcdatapos; |
| 649 | if (size+datapos > len) |
| 650 | size=len-datapos; |
| 651 | memcpy(se401->vlcdata+se401->vlcdatapos, data+datapos, size); |
| 652 | se401->vlcdatapos+=size; |
| 653 | packetlength=0; |
| 654 | if (se401->vlcdatapos >= 4) { |
| 655 | bit_exp=se401->vlcdata[3]+(se401->vlcdata[2]<<8); |
| 656 | pix_exp=se401->vlcdata[1]+((se401->vlcdata[0]&0x3f)<<8); |
| 657 | frameinfo=se401->vlcdata[0]&0xc0; |
| 658 | packetlength=((bit_exp+47)>>4)<<1; |
| 659 | if (packetlength > 1024) { |
| 660 | se401->vlcdatapos=0; |
| 661 | datapos=len; |
| 662 | packetlength=0; |
| 663 | se401->error++; |
| 664 | se401->frame[se401->curframe].curpix=0; |
| 665 | } |
| 666 | } |
| 667 | if (packetlength && se401->vlcdatapos >= packetlength) { |
| 668 | decode_JangGu_vlc(se401, se401->vlcdata, bit_exp, packetlength); |
| 669 | se401->frame[se401->curframe].curpix+=pix_exp*3; |
| 670 | datapos+=size-(se401->vlcdatapos-packetlength); |
| 671 | se401->vlcdatapos=0; |
| 672 | if (se401->frame[se401->curframe].curpix>=se401->cwidth*se401->cheight*3) { |
| 673 | if (se401->frame[se401->curframe].curpix==se401->cwidth*se401->cheight*3) { |
| 674 | if (se401->frame[se401->curframe].grabstate==FRAME_GRABBING) { |
| 675 | se401->frame[se401->curframe].grabstate=FRAME_DONE; |
| 676 | se401->framecount++; |
| 677 | se401->readcount++; |
| 678 | } |
| 679 | if (se401->frame[(se401->curframe+1)&(SE401_NUMFRAMES-1)].grabstate==FRAME_READY) { |
| 680 | se401->curframe=(se401->curframe+1) & (SE401_NUMFRAMES-1); |
| 681 | } |
| 682 | } else { |
| 683 | se401->error++; |
| 684 | } |
| 685 | se401->frame[se401->curframe].curpix=0; |
| 686 | datapos=len; |
| 687 | } |
| 688 | } else { |
| 689 | datapos+=size; |
| 690 | } |
| 691 | } |
| 692 | } |
| 693 | |
| 694 | static inline void decode_bayer (struct usb_se401 *se401, struct se401_scratch *buffer) |
| 695 | { |
| 696 | unsigned char *data=buffer->data; |
| 697 | int len=buffer->length; |
| 698 | int offset=buffer->offset; |
| 699 | int datasize=se401->cwidth*se401->cheight; |
| 700 | struct se401_frame *frame=&se401->frame[se401->curframe]; |
| 701 | |
| 702 | unsigned char *framedata=frame->data, *curline, *nextline; |
| 703 | int width=se401->cwidth; |
| 704 | int blineoffset=0, bline; |
| 705 | int linelength=width*3, i; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 706 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | |
| 708 | if (frame->curpix==0) { |
| 709 | if (frame->grabstate==FRAME_READY) { |
| 710 | frame->grabstate=FRAME_GRABBING; |
| 711 | } |
| 712 | frame->curline=framedata+linelength; |
| 713 | frame->curlinepix=0; |
| 714 | } |
| 715 | |
| 716 | if (offset!=frame->curpix) { |
| 717 | /* Regard frame as lost :( */ |
| 718 | frame->curpix=0; |
| 719 | se401->error++; |
| 720 | return; |
| 721 | } |
| 722 | |
| 723 | /* Check if we have to much data */ |
| 724 | if (frame->curpix+len > datasize) { |
| 725 | len=datasize-frame->curpix; |
| 726 | } |
| 727 | if (se401->cheight%4) |
| 728 | blineoffset=1; |
| 729 | bline=frame->curpix/se401->cwidth+blineoffset; |
| 730 | |
| 731 | curline=frame->curline; |
| 732 | nextline=curline+linelength; |
| 733 | if (nextline >= framedata+datasize*3) |
| 734 | nextline=curline; |
| 735 | while (len) { |
| 736 | if (frame->curlinepix>=width) { |
| 737 | frame->curlinepix-=width; |
| 738 | bline=frame->curpix/width+blineoffset; |
| 739 | curline+=linelength*2; |
| 740 | nextline+=linelength*2; |
| 741 | if (curline >= framedata+datasize*3) { |
| 742 | frame->curlinepix++; |
| 743 | curline-=3; |
| 744 | nextline-=3; |
| 745 | len--; |
| 746 | data++; |
| 747 | frame->curpix++; |
| 748 | } |
| 749 | if (nextline >= framedata+datasize*3) |
| 750 | nextline=curline; |
| 751 | } |
| 752 | if ((bline&1)) { |
| 753 | if ((frame->curlinepix&1)) { |
| 754 | *(curline+2)=*data; |
| 755 | *(curline-1)=*data; |
| 756 | *(nextline+2)=*data; |
| 757 | *(nextline-1)=*data; |
| 758 | } else { |
| 759 | *(curline+1)= |
| 760 | (*(curline+1)+*data)/2; |
| 761 | *(curline-2)= |
| 762 | (*(curline-2)+*data)/2; |
| 763 | *(nextline+1)=*data; |
| 764 | *(nextline-2)=*data; |
| 765 | } |
| 766 | } else { |
| 767 | if ((frame->curlinepix&1)) { |
| 768 | *(curline+1)= |
| 769 | (*(curline+1)+*data)/2; |
| 770 | *(curline-2)= |
| 771 | (*(curline-2)+*data)/2; |
| 772 | *(nextline+1)=*data; |
| 773 | *(nextline-2)=*data; |
| 774 | } else { |
| 775 | *curline=*data; |
| 776 | *(curline-3)=*data; |
| 777 | *nextline=*data; |
| 778 | *(nextline-3)=*data; |
| 779 | } |
| 780 | } |
| 781 | frame->curlinepix++; |
| 782 | curline-=3; |
| 783 | nextline-=3; |
| 784 | len--; |
| 785 | data++; |
| 786 | frame->curpix++; |
| 787 | } |
| 788 | frame->curline=curline; |
| 789 | |
| 790 | if (frame->curpix>=datasize) { |
| 791 | /* Fix the top line */ |
| 792 | framedata+=linelength; |
| 793 | for (i=0; i<linelength; i++) { |
| 794 | framedata--; |
| 795 | *framedata=*(framedata+linelength); |
| 796 | } |
| 797 | /* Fix the left side (green is already present) */ |
| 798 | for (i=0; i<se401->cheight; i++) { |
| 799 | *framedata=*(framedata+3); |
| 800 | *(framedata+1)=*(framedata+4); |
| 801 | *(framedata+2)=*(framedata+5); |
| 802 | framedata+=linelength; |
| 803 | } |
| 804 | frame->curpix=0; |
| 805 | frame->grabstate=FRAME_DONE; |
| 806 | se401->framecount++; |
| 807 | se401->readcount++; |
| 808 | if (se401->frame[(se401->curframe+1)&(SE401_NUMFRAMES-1)].grabstate==FRAME_READY) { |
| 809 | se401->curframe=(se401->curframe+1) & (SE401_NUMFRAMES-1); |
| 810 | } |
| 811 | } |
| 812 | } |
| 813 | |
| 814 | static int se401_newframe(struct usb_se401 *se401, int framenr) |
| 815 | { |
| 816 | DECLARE_WAITQUEUE(wait, current); |
| 817 | int errors=0; |
| 818 | |
| 819 | while (se401->streaming && |
| 820 | (se401->frame[framenr].grabstate==FRAME_READY || |
| 821 | se401->frame[framenr].grabstate==FRAME_GRABBING) ) { |
| 822 | if(!se401->frame[framenr].curpix) { |
| 823 | errors++; |
| 824 | } |
| 825 | wait_interruptible( |
| 826 | se401->scratch[se401->scratch_use].state!=BUFFER_READY, |
| 827 | &se401->wq, |
| 828 | &wait |
| 829 | ); |
| 830 | if (se401->nullpackets > SE401_MAX_NULLPACKETS) { |
| 831 | se401->nullpackets=0; |
| 832 | info("to many null length packets, restarting capture"); |
| 833 | se401_stop_stream(se401); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 834 | se401_start_stream(se401); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | } else { |
| 836 | if (se401->scratch[se401->scratch_use].state!=BUFFER_READY) { |
| 837 | se401->frame[framenr].grabstate=FRAME_ERROR; |
| 838 | return -EIO; |
| 839 | } |
| 840 | se401->scratch[se401->scratch_use].state=BUFFER_BUSY; |
| 841 | if (se401->format==FMT_JANGGU) { |
| 842 | decode_JangGu(se401, &se401->scratch[se401->scratch_use]); |
| 843 | } else { |
| 844 | decode_bayer(se401, &se401->scratch[se401->scratch_use]); |
| 845 | } |
| 846 | se401->scratch[se401->scratch_use].state=BUFFER_UNUSED; |
| 847 | se401->scratch_use++; |
| 848 | if (se401->scratch_use>=SE401_NUMSCRATCH) |
| 849 | se401->scratch_use=0; |
| 850 | if (errors > SE401_MAX_ERRORS) { |
| 851 | errors=0; |
| 852 | info("to much errors, restarting capture"); |
| 853 | se401_stop_stream(se401); |
| 854 | se401_start_stream(se401); |
| 855 | } |
| 856 | } |
| 857 | } |
| 858 | |
| 859 | if (se401->frame[framenr].grabstate==FRAME_DONE) |
| 860 | if (se401->enhance) |
| 861 | enhance_picture(se401->frame[framenr].data, se401->cheight*se401->cwidth*3); |
| 862 | return 0; |
| 863 | } |
| 864 | |
| 865 | static void usb_se401_remove_disconnected (struct usb_se401 *se401) |
| 866 | { |
| 867 | int i; |
| 868 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 869 | se401->dev = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | |
Jesper Juhl | 1bc3c9e | 2005-04-18 17:39:34 -0700 | [diff] [blame] | 871 | for (i=0; i<SE401_NUMSBUF; i++) |
| 872 | if (se401->urb[i]) { |
| 873 | usb_kill_urb(se401->urb[i]); |
| 874 | usb_free_urb(se401->urb[i]); |
| 875 | se401->urb[i] = NULL; |
| 876 | kfree(se401->sbuf[i].data); |
| 877 | } |
| 878 | for (i=0; i<SE401_NUMSCRATCH; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | kfree(se401->scratch[i].data); |
| 880 | } |
| 881 | if (se401->inturb) { |
| 882 | usb_kill_urb(se401->inturb); |
| 883 | usb_free_urb(se401->inturb); |
| 884 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 885 | info("%s disconnected", se401->camera_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 887 | /* Free the memory */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | kfree(se401->width); |
| 889 | kfree(se401->height); |
| 890 | kfree(se401); |
| 891 | } |
| 892 | |
| 893 | |
| 894 | |
| 895 | /**************************************************************************** |
| 896 | * |
| 897 | * Video4Linux |
| 898 | * |
| 899 | ***************************************************************************/ |
| 900 | |
| 901 | |
| 902 | static int se401_open(struct inode *inode, struct file *file) |
| 903 | { |
| 904 | struct video_device *dev = video_devdata(file); |
| 905 | struct usb_se401 *se401 = (struct usb_se401 *)dev; |
| 906 | int err = 0; |
| 907 | |
| 908 | if (se401->user) |
| 909 | return -EBUSY; |
| 910 | se401->fbuf = rvmalloc(se401->maxframesize * SE401_NUMFRAMES); |
| 911 | if (se401->fbuf) |
| 912 | file->private_data = dev; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 913 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | err = -ENOMEM; |
| 915 | se401->user = !err; |
| 916 | |
| 917 | return err; |
| 918 | } |
| 919 | |
| 920 | static int se401_close(struct inode *inode, struct file *file) |
| 921 | { |
| 922 | struct video_device *dev = file->private_data; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 923 | struct usb_se401 *se401 = (struct usb_se401 *)dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | int i; |
| 925 | |
| 926 | rvfree(se401->fbuf, se401->maxframesize * SE401_NUMFRAMES); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 927 | if (se401->removed) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | usb_se401_remove_disconnected(se401); |
| 929 | info("device unregistered"); |
| 930 | } else { |
| 931 | for (i=0; i<SE401_NUMFRAMES; i++) |
| 932 | se401->frame[i].grabstate=FRAME_UNUSED; |
| 933 | if (se401->streaming) |
| 934 | se401_stop_stream(se401); |
| 935 | se401->user=0; |
| 936 | } |
| 937 | file->private_data = NULL; |
| 938 | return 0; |
| 939 | } |
| 940 | |
| 941 | static int se401_do_ioctl(struct inode *inode, struct file *file, |
| 942 | unsigned int cmd, void *arg) |
| 943 | { |
| 944 | struct video_device *vdev = file->private_data; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 945 | struct usb_se401 *se401 = (struct usb_se401 *)vdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 947 | if (!se401->dev) |
| 948 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 950 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | case VIDIOCGCAP: |
| 952 | { |
| 953 | struct video_capability *b = arg; |
| 954 | strcpy(b->name, se401->camera_name); |
| 955 | b->type = VID_TYPE_CAPTURE; |
| 956 | b->channels = 1; |
| 957 | b->audios = 0; |
| 958 | b->maxwidth = se401->width[se401->sizes-1]; |
| 959 | b->maxheight = se401->height[se401->sizes-1]; |
| 960 | b->minwidth = se401->width[0]; |
| 961 | b->minheight = se401->height[0]; |
| 962 | return 0; |
| 963 | } |
| 964 | case VIDIOCGCHAN: |
| 965 | { |
| 966 | struct video_channel *v = arg; |
| 967 | |
| 968 | if (v->channel != 0) |
| 969 | return -EINVAL; |
| 970 | v->flags = 0; |
| 971 | v->tuners = 0; |
| 972 | v->type = VIDEO_TYPE_CAMERA; |
| 973 | strcpy(v->name, "Camera"); |
| 974 | return 0; |
| 975 | } |
| 976 | case VIDIOCSCHAN: |
| 977 | { |
| 978 | struct video_channel *v = arg; |
| 979 | |
| 980 | if (v->channel != 0) |
| 981 | return -EINVAL; |
| 982 | return 0; |
| 983 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 984 | case VIDIOCGPICT: |
| 985 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | struct video_picture *p = arg; |
| 987 | |
| 988 | se401_get_pict(se401, p); |
| 989 | return 0; |
| 990 | } |
| 991 | case VIDIOCSPICT: |
| 992 | { |
| 993 | struct video_picture *p = arg; |
| 994 | |
| 995 | if (se401_set_pict(se401, p)) |
| 996 | return -EINVAL; |
| 997 | return 0; |
| 998 | } |
| 999 | case VIDIOCSWIN: |
| 1000 | { |
| 1001 | struct video_window *vw = arg; |
| 1002 | |
| 1003 | if (vw->flags) |
| 1004 | return -EINVAL; |
| 1005 | if (vw->clipcount) |
| 1006 | return -EINVAL; |
| 1007 | if (se401_set_size(se401, vw->width, vw->height)) |
| 1008 | return -EINVAL; |
| 1009 | return 0; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1010 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | case VIDIOCGWIN: |
| 1012 | { |
| 1013 | struct video_window *vw = arg; |
| 1014 | |
| 1015 | vw->x = 0; /* FIXME */ |
| 1016 | vw->y = 0; |
| 1017 | vw->chromakey = 0; |
| 1018 | vw->flags = 0; |
| 1019 | vw->clipcount = 0; |
| 1020 | vw->width = se401->cwidth; |
| 1021 | vw->height = se401->cheight; |
| 1022 | return 0; |
| 1023 | } |
| 1024 | case VIDIOCGMBUF: |
| 1025 | { |
| 1026 | struct video_mbuf *vm = arg; |
| 1027 | int i; |
| 1028 | |
| 1029 | memset(vm, 0, sizeof(*vm)); |
| 1030 | vm->size = SE401_NUMFRAMES * se401->maxframesize; |
| 1031 | vm->frames = SE401_NUMFRAMES; |
| 1032 | for (i=0; i<SE401_NUMFRAMES; i++) |
| 1033 | vm->offsets[i] = se401->maxframesize * i; |
| 1034 | return 0; |
| 1035 | } |
| 1036 | case VIDIOCMCAPTURE: |
| 1037 | { |
| 1038 | struct video_mmap *vm = arg; |
| 1039 | |
| 1040 | if (vm->format != VIDEO_PALETTE_RGB24) |
| 1041 | return -EINVAL; |
| 1042 | if (vm->frame >= SE401_NUMFRAMES) |
| 1043 | return -EINVAL; |
| 1044 | if (se401->frame[vm->frame].grabstate != FRAME_UNUSED) |
| 1045 | return -EBUSY; |
| 1046 | |
| 1047 | /* Is this according to the v4l spec??? */ |
| 1048 | if (se401_set_size(se401, vm->width, vm->height)) |
| 1049 | return -EINVAL; |
| 1050 | se401->frame[vm->frame].grabstate=FRAME_READY; |
| 1051 | |
| 1052 | if (!se401->streaming) |
| 1053 | se401_start_stream(se401); |
| 1054 | |
| 1055 | /* Set the picture properties */ |
| 1056 | if (se401->framecount==0) |
| 1057 | se401_send_pict(se401); |
| 1058 | /* Calibrate the reset level after a few frames. */ |
| 1059 | if (se401->framecount%20==1) |
| 1060 | se401_auto_resetlevel(se401); |
| 1061 | |
| 1062 | return 0; |
| 1063 | } |
| 1064 | case VIDIOCSYNC: |
| 1065 | { |
| 1066 | int *frame = arg; |
| 1067 | int ret=0; |
| 1068 | |
| 1069 | if(*frame <0 || *frame >= SE401_NUMFRAMES) |
| 1070 | return -EINVAL; |
| 1071 | |
| 1072 | ret=se401_newframe(se401, *frame); |
| 1073 | se401->frame[*frame].grabstate=FRAME_UNUSED; |
| 1074 | return ret; |
| 1075 | } |
| 1076 | case VIDIOCGFBUF: |
| 1077 | { |
| 1078 | struct video_buffer *vb = arg; |
| 1079 | |
| 1080 | memset(vb, 0, sizeof(*vb)); |
| 1081 | return 0; |
| 1082 | } |
| 1083 | case VIDIOCKEY: |
| 1084 | return 0; |
| 1085 | case VIDIOCCAPTURE: |
| 1086 | return -EINVAL; |
| 1087 | case VIDIOCSFBUF: |
| 1088 | return -EINVAL; |
| 1089 | case VIDIOCGTUNER: |
| 1090 | case VIDIOCSTUNER: |
| 1091 | return -EINVAL; |
| 1092 | case VIDIOCGFREQ: |
| 1093 | case VIDIOCSFREQ: |
| 1094 | return -EINVAL; |
| 1095 | case VIDIOCGAUDIO: |
| 1096 | case VIDIOCSAUDIO: |
| 1097 | return -EINVAL; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1098 | default: |
| 1099 | return -ENOIOCTLCMD; |
| 1100 | } /* end switch */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1102 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | } |
| 1104 | |
| 1105 | static int se401_ioctl(struct inode *inode, struct file *file, |
| 1106 | unsigned int cmd, unsigned long arg) |
| 1107 | { |
| 1108 | return video_usercopy(inode, file, cmd, arg, se401_do_ioctl); |
| 1109 | } |
| 1110 | |
| 1111 | static ssize_t se401_read(struct file *file, char __user *buf, |
| 1112 | size_t count, loff_t *ppos) |
| 1113 | { |
| 1114 | int realcount=count, ret=0; |
| 1115 | struct video_device *dev = file->private_data; |
| 1116 | struct usb_se401 *se401 = (struct usb_se401 *)dev; |
| 1117 | |
| 1118 | |
| 1119 | if (se401->dev == NULL) |
| 1120 | return -EIO; |
| 1121 | if (realcount > se401->cwidth*se401->cheight*3) |
| 1122 | realcount=se401->cwidth*se401->cheight*3; |
| 1123 | |
| 1124 | /* Shouldn't happen: */ |
| 1125 | if (se401->frame[0].grabstate==FRAME_GRABBING) |
| 1126 | return -EBUSY; |
| 1127 | se401->frame[0].grabstate=FRAME_READY; |
| 1128 | se401->frame[1].grabstate=FRAME_UNUSED; |
| 1129 | se401->curframe=0; |
| 1130 | |
| 1131 | if (!se401->streaming) |
| 1132 | se401_start_stream(se401); |
| 1133 | |
| 1134 | /* Set the picture properties */ |
| 1135 | if (se401->framecount==0) |
| 1136 | se401_send_pict(se401); |
| 1137 | /* Calibrate the reset level after a few frames. */ |
| 1138 | if (se401->framecount%20==1) |
| 1139 | se401_auto_resetlevel(se401); |
| 1140 | |
| 1141 | ret=se401_newframe(se401, 0); |
| 1142 | |
| 1143 | se401->frame[0].grabstate=FRAME_UNUSED; |
| 1144 | if (ret) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1145 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | if (copy_to_user(buf, se401->frame[0].data, realcount)) |
| 1147 | return -EFAULT; |
| 1148 | |
| 1149 | return realcount; |
| 1150 | } |
| 1151 | |
| 1152 | static int se401_mmap(struct file *file, struct vm_area_struct *vma) |
| 1153 | { |
| 1154 | struct video_device *dev = file->private_data; |
| 1155 | struct usb_se401 *se401 = (struct usb_se401 *)dev; |
| 1156 | unsigned long start = vma->vm_start; |
| 1157 | unsigned long size = vma->vm_end-vma->vm_start; |
| 1158 | unsigned long page, pos; |
| 1159 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 1160 | mutex_lock(&se401->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | |
| 1162 | if (se401->dev == NULL) { |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 1163 | mutex_unlock(&se401->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | return -EIO; |
| 1165 | } |
| 1166 | if (size > (((SE401_NUMFRAMES * se401->maxframesize) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))) { |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 1167 | mutex_unlock(&se401->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | return -EINVAL; |
| 1169 | } |
| 1170 | pos = (unsigned long)se401->fbuf; |
| 1171 | while (size > 0) { |
| 1172 | page = vmalloc_to_pfn((void *)pos); |
| 1173 | if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) { |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 1174 | mutex_unlock(&se401->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | return -EAGAIN; |
| 1176 | } |
| 1177 | start += PAGE_SIZE; |
| 1178 | pos += PAGE_SIZE; |
| 1179 | if (size > PAGE_SIZE) |
| 1180 | size -= PAGE_SIZE; |
| 1181 | else |
| 1182 | size = 0; |
| 1183 | } |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 1184 | mutex_unlock(&se401->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1186 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | } |
| 1188 | |
| 1189 | static struct file_operations se401_fops = { |
| 1190 | .owner = THIS_MODULE, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1191 | .open = se401_open, |
| 1192 | .release = se401_close, |
| 1193 | .read = se401_read, |
| 1194 | .mmap = se401_mmap, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1195 | .ioctl = se401_ioctl, |
Arnd Bergmann | 0d0fbf8 | 2006-01-09 15:24:57 -0200 | [diff] [blame] | 1196 | .compat_ioctl = v4l_compat_ioctl32, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | .llseek = no_llseek, |
| 1198 | }; |
| 1199 | static struct video_device se401_template = { |
| 1200 | .owner = THIS_MODULE, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1201 | .name = "se401 USB camera", |
| 1202 | .type = VID_TYPE_CAPTURE, |
| 1203 | .hardware = VID_HARDWARE_SE401, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1204 | .fops = &se401_fops, |
| 1205 | }; |
| 1206 | |
| 1207 | |
| 1208 | |
| 1209 | /***************************/ |
| 1210 | static int se401_init(struct usb_se401 *se401, int button) |
| 1211 | { |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1212 | int i=0, rc; |
| 1213 | unsigned char cp[0x40]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | char temp[200]; |
| 1215 | |
| 1216 | /* led on */ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1217 | se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 1, NULL, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | |
| 1219 | /* get camera descriptor */ |
| 1220 | rc=se401_sndctrl(0, se401, SE401_REQ_GET_CAMERA_DESCRIPTOR, 0, cp, sizeof(cp)); |
| 1221 | if (cp[1]!=0x41) { |
| 1222 | err("Wrong descriptor type"); |
| 1223 | return 1; |
| 1224 | } |
| 1225 | sprintf (temp, "ExtraFeatures: %d", cp[3]); |
| 1226 | |
| 1227 | se401->sizes=cp[4]+cp[5]*256; |
| 1228 | se401->width=kmalloc(se401->sizes*sizeof(int), GFP_KERNEL); |
| 1229 | if (!se401->width) |
| 1230 | return 1; |
| 1231 | se401->height=kmalloc(se401->sizes*sizeof(int), GFP_KERNEL); |
| 1232 | if (!se401->height) { |
| 1233 | kfree(se401->width); |
| 1234 | return 1; |
| 1235 | } |
| 1236 | for (i=0; i<se401->sizes; i++) { |
| 1237 | se401->width[i]=cp[6+i*4+0]+cp[6+i*4+1]*256; |
| 1238 | se401->height[i]=cp[6+i*4+2]+cp[6+i*4+3]*256; |
| 1239 | } |
| 1240 | sprintf (temp, "%s Sizes:", temp); |
| 1241 | for (i=0; i<se401->sizes; i++) { |
| 1242 | sprintf(temp, "%s %dx%d", temp, se401->width[i], se401->height[i]); |
| 1243 | } |
| 1244 | info("%s", temp); |
| 1245 | se401->maxframesize=se401->width[se401->sizes-1]*se401->height[se401->sizes-1]*3; |
| 1246 | |
| 1247 | rc=se401_sndctrl(0, se401, SE401_REQ_GET_WIDTH, 0, cp, sizeof(cp)); |
| 1248 | se401->cwidth=cp[0]+cp[1]*256; |
| 1249 | rc=se401_sndctrl(0, se401, SE401_REQ_GET_HEIGHT, 0, cp, sizeof(cp)); |
| 1250 | se401->cheight=cp[0]+cp[1]*256; |
| 1251 | |
| 1252 | if (!cp[2] && SE401_FORMAT_BAYER) { |
| 1253 | err("Bayer format not supported!"); |
| 1254 | return 1; |
| 1255 | } |
| 1256 | /* set output mode (BAYER) */ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1257 | se401_sndctrl(1, se401, SE401_REQ_SET_OUTPUT_MODE, SE401_FORMAT_BAYER, NULL, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | |
| 1259 | rc=se401_sndctrl(0, se401, SE401_REQ_GET_BRT, 0, cp, sizeof(cp)); |
| 1260 | se401->brightness=cp[0]+cp[1]*256; |
| 1261 | /* some default values */ |
| 1262 | se401->resetlevel=0x2d; |
| 1263 | se401->rgain=0x20; |
| 1264 | se401->ggain=0x20; |
| 1265 | se401->bgain=0x20; |
| 1266 | se401_set_exposure(se401, 20000); |
| 1267 | se401->palette=VIDEO_PALETTE_RGB24; |
| 1268 | se401->enhance=1; |
| 1269 | se401->dropped=0; |
| 1270 | se401->error=0; |
| 1271 | se401->framecount=0; |
| 1272 | se401->readcount=0; |
| 1273 | |
| 1274 | /* Start interrupt transfers for snapshot button */ |
| 1275 | if (button) { |
| 1276 | se401->inturb=usb_alloc_urb(0, GFP_KERNEL); |
| 1277 | if (!se401->inturb) { |
| 1278 | info("Allocation of inturb failed"); |
| 1279 | return 1; |
| 1280 | } |
| 1281 | usb_fill_int_urb(se401->inturb, se401->dev, |
| 1282 | usb_rcvintpipe(se401->dev, SE401_BUTTON_ENDPOINT), |
| 1283 | &se401->button, sizeof(se401->button), |
| 1284 | se401_button_irq, |
| 1285 | se401, |
| 1286 | 8 |
| 1287 | ); |
| 1288 | if (usb_submit_urb(se401->inturb, GFP_KERNEL)) { |
| 1289 | info("int urb burned down"); |
| 1290 | return 1; |
| 1291 | } |
| 1292 | } else |
| 1293 | se401->inturb=NULL; |
| 1294 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1295 | /* Flash the led */ |
| 1296 | se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 1, NULL, 0); |
| 1297 | se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 1, NULL, 0); |
| 1298 | se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 0, NULL, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1299 | se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 0, NULL, 0); |
| 1300 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1301 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | } |
| 1303 | |
| 1304 | static int se401_probe(struct usb_interface *intf, |
| 1305 | const struct usb_device_id *id) |
| 1306 | { |
| 1307 | struct usb_device *dev = interface_to_usbdev(intf); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1308 | struct usb_interface_descriptor *interface; |
| 1309 | struct usb_se401 *se401; |
| 1310 | char *camera_name=NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | int button=1; |
| 1312 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1313 | /* We don't handle multi-config cameras */ |
| 1314 | if (dev->descriptor.bNumConfigurations != 1) |
| 1315 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1317 | interface = &intf->cur_altsetting->desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1318 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1319 | /* Is it an se401? */ |
| 1320 | if (le16_to_cpu(dev->descriptor.idVendor) == 0x03e8 && |
| 1321 | le16_to_cpu(dev->descriptor.idProduct) == 0x0004) { |
| 1322 | camera_name="Endpoints/Aox SE401"; |
| 1323 | } else if (le16_to_cpu(dev->descriptor.idVendor) == 0x0471 && |
| 1324 | le16_to_cpu(dev->descriptor.idProduct) == 0x030b) { |
| 1325 | camera_name="Philips PCVC665K"; |
| 1326 | } else if (le16_to_cpu(dev->descriptor.idVendor) == 0x047d && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1327 | le16_to_cpu(dev->descriptor.idProduct) == 0x5001) { |
| 1328 | camera_name="Kensington VideoCAM 67014"; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1329 | } else if (le16_to_cpu(dev->descriptor.idVendor) == 0x047d && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1330 | le16_to_cpu(dev->descriptor.idProduct) == 0x5002) { |
| 1331 | camera_name="Kensington VideoCAM 6701(5/7)"; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1332 | } else if (le16_to_cpu(dev->descriptor.idVendor) == 0x047d && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | le16_to_cpu(dev->descriptor.idProduct) == 0x5003) { |
| 1334 | camera_name="Kensington VideoCAM 67016"; |
| 1335 | button=0; |
| 1336 | } else |
| 1337 | return -ENODEV; |
| 1338 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1339 | /* Checking vendor/product should be enough, but what the hell */ |
| 1340 | if (interface->bInterfaceClass != 0x00) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1341 | return -ENODEV; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1342 | if (interface->bInterfaceSubClass != 0x00) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | return -ENODEV; |
| 1344 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1345 | /* We found one */ |
| 1346 | info("SE401 camera found: %s", camera_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1348 | if ((se401 = kzalloc(sizeof(*se401), GFP_KERNEL)) == NULL) { |
| 1349 | err("couldn't kmalloc se401 struct"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | return -ENOMEM; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1351 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1352 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1353 | se401->dev = dev; |
| 1354 | se401->iface = interface->bInterfaceNumber; |
| 1355 | se401->camera_name = camera_name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | |
| 1357 | info("firmware version: %02x", le16_to_cpu(dev->descriptor.bcdDevice) & 255); |
| 1358 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1359 | if (se401_init(se401, button)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1360 | kfree(se401); |
| 1361 | return -EIO; |
| 1362 | } |
| 1363 | |
| 1364 | memcpy(&se401->vdev, &se401_template, sizeof(se401_template)); |
| 1365 | memcpy(se401->vdev.name, se401->camera_name, strlen(se401->camera_name)); |
| 1366 | init_waitqueue_head(&se401->wq); |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 1367 | mutex_init(&se401->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | wmb(); |
| 1369 | |
| 1370 | if (video_register_device(&se401->vdev, VFL_TYPE_GRABBER, video_nr) == -1) { |
| 1371 | kfree(se401); |
| 1372 | err("video_register_device failed"); |
| 1373 | return -EIO; |
| 1374 | } |
| 1375 | info("registered new video device: video%d", se401->vdev.minor); |
| 1376 | |
| 1377 | usb_set_intfdata (intf, se401); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1378 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | } |
| 1380 | |
| 1381 | static void se401_disconnect(struct usb_interface *intf) |
| 1382 | { |
| 1383 | struct usb_se401 *se401 = usb_get_intfdata (intf); |
| 1384 | |
| 1385 | usb_set_intfdata (intf, NULL); |
| 1386 | if (se401) { |
| 1387 | video_unregister_device(&se401->vdev); |
| 1388 | if (!se401->user){ |
| 1389 | usb_se401_remove_disconnected(se401); |
| 1390 | } else { |
| 1391 | se401->frame[0].grabstate = FRAME_ERROR; |
| 1392 | se401->frame[0].grabstate = FRAME_ERROR; |
| 1393 | |
| 1394 | se401->streaming = 0; |
| 1395 | |
| 1396 | wake_up_interruptible(&se401->wq); |
| 1397 | se401->removed = 1; |
| 1398 | } |
| 1399 | } |
| 1400 | } |
| 1401 | |
| 1402 | static struct usb_driver se401_driver = { |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1403 | .name = "se401", |
| 1404 | .id_table = device_table, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | .probe = se401_probe, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1406 | .disconnect = se401_disconnect, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1407 | }; |
| 1408 | |
| 1409 | |
| 1410 | |
| 1411 | /**************************************************************************** |
| 1412 | * |
| 1413 | * Module routines |
| 1414 | * |
| 1415 | ***************************************************************************/ |
| 1416 | |
| 1417 | static int __init usb_se401_init(void) |
| 1418 | { |
| 1419 | info("SE401 usb camera driver version %s registering", version); |
| 1420 | if (flickerless) |
| 1421 | if (flickerless!=50 && flickerless!=60) { |
| 1422 | info("Invallid flickerless value, use 0, 50 or 60."); |
| 1423 | return -1; |
| 1424 | } |
| 1425 | return usb_register(&se401_driver); |
| 1426 | } |
| 1427 | |
| 1428 | static void __exit usb_se401_exit(void) |
| 1429 | { |
| 1430 | usb_deregister(&se401_driver); |
| 1431 | info("SE401 driver deregistered"); |
| 1432 | } |
| 1433 | |
| 1434 | module_init(usb_se401_init); |
| 1435 | module_exit(usb_se401_exit); |