SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/media/video/gspca/stk014.c

   1 /*
   2  * Syntek DV4000 (STK014) subdriver
   3  *
   4  * Copyright (C) 2008 Jean-Francois Moine (http://moinejf.free.fr)
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19  */
  20
  21 #define MODULE_NAME "stk014"
  22
  23 #include "gspca.h"
  24 #include "jpeg.h"
  25
  26 MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
  27 MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver");
  28 MODULE_LICENSE("GPL");
  29
  30 /* specific webcam descriptor */
  31 struct sd {
  32         struct gspca_dev gspca_dev;     /* !! must be the first item */
  33
  34         unsigned char brightness;
  35         unsigned char contrast;
  36         unsigned char colors;
  37         unsigned char lightfreq;
  38 };
  39
  40 /* global parameters */
  41 static int sd_quant = 7;                /* <= 4 KO - 7: good (enough!) */
  42
  43 /* V4L2 controls supported by the driver */
  44 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
  45 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
  46 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
  47 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
  48 static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val);
  49 static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val);
  50 static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val);
  51 static int sd_getfreq(struct gspca_dev *gspca_dev, __s32 *val);
  52
  53 static struct ctrl sd_ctrls[] = {
  54         {
  55             {
  56                 .id      = V4L2_CID_BRIGHTNESS,
  57                 .type    = V4L2_CTRL_TYPE_INTEGER,
  58                 .name    = "Brightness",
  59                 .minimum = 0,
  60                 .maximum = 255,
  61                 .step    = 1,
  62 #define BRIGHTNESS_DEF 127
  63                 .default_value = BRIGHTNESS_DEF,
  64             },
  65             .set = sd_setbrightness,
  66             .get = sd_getbrightness,
  67         },
  68         {
  69             {
  70                 .id      = V4L2_CID_CONTRAST,
  71                 .type    = V4L2_CTRL_TYPE_INTEGER,
  72                 .name    = "Contrast",
  73                 .minimum = 0,
  74                 .maximum = 255,
  75                 .step    = 1,
  76 #define CONTRAST_DEF 127
  77                 .default_value = CONTRAST_DEF,
  78             },
  79             .set = sd_setcontrast,
  80             .get = sd_getcontrast,
  81         },
  82         {
  83             {
  84                 .id      = V4L2_CID_SATURATION,
  85                 .type    = V4L2_CTRL_TYPE_INTEGER,
  86                 .name    = "Color",
  87                 .minimum = 0,
  88                 .maximum = 255,
  89                 .step    = 1,
  90 #define COLOR_DEF 127
  91                 .default_value = COLOR_DEF,
  92             },
  93             .set = sd_setcolors,
  94             .get = sd_getcolors,
  95         },
  96         {
  97             {
  98                 .id      = V4L2_CID_POWER_LINE_FREQUENCY,
  99                 .type    = V4L2_CTRL_TYPE_MENU,
 100                 .name    = "Light frequency filter",
 101                 .minimum = 1,
 102                 .maximum = 2,   /* 0: 0, 1: 50Hz, 2:60Hz */
 103                 .step    = 1,
 104 #define FREQ_DEF 1
 105                 .default_value = FREQ_DEF,
 106             },
 107             .set = sd_setfreq,
 108             .get = sd_getfreq,
 109         },
 110 };
 111
 112 static struct v4l2_pix_format vga_mode[] = {
 113         {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
 114                 .bytesperline = 320,
 115                 .sizeimage = 320 * 240 * 3 / 8 + 590,
 116                 .colorspace = V4L2_COLORSPACE_JPEG,
 117                 .priv = 1},
 118         {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
 119                 .bytesperline = 640,
 120                 .sizeimage = 640 * 480 * 3 / 8 + 590,
 121                 .colorspace = V4L2_COLORSPACE_JPEG,
 122                 .priv = 0},
 123 };
 124
 125 /* -- read a register -- */
 126 static int reg_r(struct gspca_dev *gspca_dev,
 127                         __u16 index)
 128 {
 129         struct usb_device *dev = gspca_dev->dev;
 130         int ret;
 131
 132         ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 133                         0x00,
 134                         USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 135                         0x00,
 136                         index,
 137                         gspca_dev->usb_buf, 1,
 138                         500);
 139         if (ret < 0) {
 140                 PDEBUG(D_ERR, "reg_r err %d", ret);
 141                 return ret;
 142         }
 143         return gspca_dev->usb_buf[0];
 144 }
 145
 146 /* -- write a register -- */
 147 static int reg_w(struct gspca_dev *gspca_dev,
 148                         __u16 index, __u16 value)
 149 {
 150         struct usb_device *dev = gspca_dev->dev;
 151         int ret;
 152
 153         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 154                         0x01,
 155                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 156                         value,
 157                         index,
 158                         NULL,
 159                         0,
 160                         500);
 161         if (ret < 0)
 162                 PDEBUG(D_ERR, "reg_w err %d", ret);
 163         return ret;
 164 }
 165
 166 /* -- get a bulk value (4 bytes) -- */
 167 static int rcv_val(struct gspca_dev *gspca_dev,
 168                         int ads)
 169 {
 170         struct usb_device *dev = gspca_dev->dev;
 171         int alen, ret;
 172
 173         reg_w(gspca_dev, 0x634, (ads >> 16) & 0xff);
 174         reg_w(gspca_dev, 0x635, (ads >> 8) & 0xff);
 175         reg_w(gspca_dev, 0x636, ads & 0xff);
 176         reg_w(gspca_dev, 0x637, 0);
 177         reg_w(gspca_dev, 0x638, 4);     /* len & 0xff */
 178         reg_w(gspca_dev, 0x639, 0);     /* len >> 8 */
 179         reg_w(gspca_dev, 0x63a, 0);
 180         reg_w(gspca_dev, 0x63b, 0);
 181         reg_w(gspca_dev, 0x630, 5);
 182         ret = usb_bulk_msg(dev,
 183                         usb_rcvbulkpipe(dev, 5),
 184                         gspca_dev->usb_buf,
 185                         4,              /* length */
 186                         &alen,
 187                         500);           /* timeout in milliseconds */
 188         return ret;
 189 }
 190
 191 /* -- send a bulk value -- */
 192 static int snd_val(struct gspca_dev *gspca_dev,
 193                         int ads,
 194                         unsigned int val)
 195 {
 196         struct usb_device *dev = gspca_dev->dev;
 197         int alen, ret;
 198         __u8 seq = 0;
 199
 200         if (ads == 0x003f08) {
 201                 ret = reg_r(gspca_dev, 0x0704);
 202                 if (ret < 0)
 203                         goto ko;
 204                 ret = reg_r(gspca_dev, 0x0705);
 205                 if (ret < 0)
 206                         goto ko;
 207                 seq = ret;              /* keep the sequence number */
 208                 ret = reg_r(gspca_dev, 0x0650);
 209                 if (ret < 0)
 210                         goto ko;
 211                 reg_w(gspca_dev, 0x654, seq);
 212         } else {
 213                 reg_w(gspca_dev, 0x654, (ads >> 16) & 0xff);
 214         }
 215         reg_w(gspca_dev, 0x655, (ads >> 8) & 0xff);
 216         reg_w(gspca_dev, 0x656, ads & 0xff);
 217         reg_w(gspca_dev, 0x657, 0);
 218         reg_w(gspca_dev, 0x658, 0x04);  /* size */
 219         reg_w(gspca_dev, 0x659, 0);
 220         reg_w(gspca_dev, 0x65a, 0);
 221         reg_w(gspca_dev, 0x65b, 0);
 222         reg_w(gspca_dev, 0x650, 5);
 223         gspca_dev->usb_buf[0] = val >> 24;
 224         gspca_dev->usb_buf[1] = val >> 16;
 225         gspca_dev->usb_buf[2] = val >> 8;
 226         gspca_dev->usb_buf[3] = val;
 227         ret = usb_bulk_msg(dev,
 228                         usb_sndbulkpipe(dev, 6),
 229                         gspca_dev->usb_buf,
 230                         4,
 231                         &alen,
 232                         500);   /* timeout in milliseconds */
 233         if (ret < 0)
 234                 goto ko;
 235         if (ads == 0x003f08) {
 236                 seq += 4;
 237                 seq &= 0x3f;
 238                 reg_w(gspca_dev, 0x705, seq);
 239         }
 240         return ret;
 241 ko:
 242         PDEBUG(D_ERR, "snd_val err %d", ret);
 243         return ret;
 244 }
 245
 246 /* set a camera parameter */
 247 static int set_par(struct gspca_dev *gspca_dev,
 248                    int parval)
 249 {
 250         return snd_val(gspca_dev, 0x003f08, parval);
 251 }
 252
 253 static void setbrightness(struct gspca_dev *gspca_dev)
 254 {
 255         struct sd *sd = (struct sd *) gspca_dev;
 256         int parval;
 257
 258         parval = 0x06000000             /* whiteness */
 259                 + (sd->brightness << 16);
 260         set_par(gspca_dev, parval);
 261 }
 262
 263 static void setcontrast(struct gspca_dev *gspca_dev)
 264 {
 265         struct sd *sd = (struct sd *) gspca_dev;
 266         int parval;
 267
 268         parval = 0x07000000             /* contrast */
 269                 + (sd->contrast << 16);
 270         set_par(gspca_dev, parval);
 271 }
 272
 273 static void setcolors(struct gspca_dev *gspca_dev)
 274 {
 275         struct sd *sd = (struct sd *) gspca_dev;
 276         int parval;
 277
 278         parval = 0x08000000             /* saturation */
 279                 + (sd->colors << 16);
 280         set_par(gspca_dev, parval);
 281 }
 282
 283 static void setfreq(struct gspca_dev *gspca_dev)
 284 {
 285         struct sd *sd = (struct sd *) gspca_dev;
 286
 287         set_par(gspca_dev, sd->lightfreq == 1
 288                         ? 0x33640000            /* 50 Hz */
 289                         : 0x33780000);          /* 60 Hz */
 290 }
 291
 292 /* this function is called at probe time */
 293 static int sd_config(struct gspca_dev *gspca_dev,
 294                         const struct usb_device_id *id)
 295 {
 296         struct sd *sd = (struct sd *) gspca_dev;
 297         struct cam *cam = &gspca_dev->cam;
 298
 299         cam->dev_name = (char *) id->driver_info;
 300         cam->epaddr = 0x02;
 301         gspca_dev->cam.cam_mode = vga_mode;
 302         gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
 303         sd->brightness = BRIGHTNESS_DEF;
 304         sd->contrast = CONTRAST_DEF;
 305         sd->colors = COLOR_DEF;
 306         sd->lightfreq = FREQ_DEF;
 307         return 0;
 308 }
 309
 310 /* this function is called at open time */
 311 static int sd_open(struct gspca_dev *gspca_dev)
 312 {
 313         int ret;
 314
 315         /* check if the device responds */
 316         usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
 317         ret = reg_r(gspca_dev, 0x0740);
 318         if (ret < 0)
 319                 return ret;
 320         if (ret != 0xff) {
 321                 PDEBUG(D_ERR|D_STREAM, "init reg: 0x%02x", ret);
 322                 return -1;
 323         }
 324         return 0;
 325 }
 326
 327 /* -- start the camera -- */
 328 static void sd_start(struct gspca_dev *gspca_dev)
 329 {
 330         int ret, value;
 331
 332         /* work on alternate 1 */
 333         usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
 334
 335         set_par(gspca_dev, 0x10000000);
 336         set_par(gspca_dev, 0x00000000);
 337         set_par(gspca_dev, 0x8002e001);
 338         set_par(gspca_dev, 0x14000000);
 339         if (gspca_dev->width > 320)
 340                 value = 0x8002e001;             /* 640x480 */
 341         else
 342                 value = 0x4001f000;             /* 320x240 */
 343         set_par(gspca_dev, value);
 344         ret = usb_set_interface(gspca_dev->dev,
 345                                         gspca_dev->iface,
 346                                         gspca_dev->alt);
 347         if (ret < 0) {
 348                 PDEBUG(D_ERR|D_STREAM, "set intf %d %d failed",
 349                         gspca_dev->iface, gspca_dev->alt);
 350                 goto out;
 351         }
 352         ret = reg_r(gspca_dev, 0x0630);
 353         if (ret < 0)
 354                 goto out;
 355         rcv_val(gspca_dev, 0x000020);   /* << (value ff ff ff ff) */
 356         ret = reg_r(gspca_dev, 0x0650);
 357         if (ret < 0)
 358                 goto out;
 359         snd_val(gspca_dev, 0x000020, 0xffffffff);
 360         reg_w(gspca_dev, 0x0620, 0);
 361         reg_w(gspca_dev, 0x0630, 0);
 362         reg_w(gspca_dev, 0x0640, 0);
 363         reg_w(gspca_dev, 0x0650, 0);
 364         reg_w(gspca_dev, 0x0660, 0);
 365         setbrightness(gspca_dev);               /* whiteness */
 366         setcontrast(gspca_dev);                 /* contrast */
 367         setcolors(gspca_dev);                   /* saturation */
 368         set_par(gspca_dev, 0x09800000);         /* Red ? */
 369         set_par(gspca_dev, 0x0a800000);         /* Green ? */
 370         set_par(gspca_dev, 0x0b800000);         /* Blue ? */
 371         set_par(gspca_dev, 0x0d030000);         /* Gamma ? */
 372         setfreq(gspca_dev);                     /* light frequency */
 373
 374         /* start the video flow */
 375         set_par(gspca_dev, 0x01000000);
 376         set_par(gspca_dev, 0x01000000);
 377         PDEBUG(D_STREAM, "camera started alt: 0x%02x", gspca_dev->alt);
 378         return;
 379 out:
 380         PDEBUG(D_ERR|D_STREAM, "camera start err %d", ret);
 381 }
 382
 383 static void sd_stopN(struct gspca_dev *gspca_dev)
 384 {
 385         struct usb_device *dev = gspca_dev->dev;
 386
 387         set_par(gspca_dev, 0x02000000);
 388         set_par(gspca_dev, 0x02000000);
 389         usb_set_interface(dev, gspca_dev->iface, 1);
 390         reg_r(gspca_dev, 0x0630);
 391         rcv_val(gspca_dev, 0x000020);   /* << (value ff ff ff ff) */
 392         reg_r(gspca_dev, 0x0650);
 393         snd_val(gspca_dev, 0x000020, 0xffffffff);
 394         reg_w(gspca_dev, 0x0620, 0);
 395         reg_w(gspca_dev, 0x0630, 0);
 396         reg_w(gspca_dev, 0x0640, 0);
 397         reg_w(gspca_dev, 0x0650, 0);
 398         reg_w(gspca_dev, 0x0660, 0);
 399         PDEBUG(D_STREAM, "camera stopped");
 400 }
 401
 402 static void sd_stop0(struct gspca_dev *gspca_dev)
 403 {
 404 }
 405
 406 static void sd_close(struct gspca_dev *gspca_dev)
 407 {
 408 }
 409
 410 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 411                         struct gspca_frame *frame,      /* target */
 412                         __u8 *data,                     /* isoc packet */
 413                         int len)                        /* iso packet length */
 414 {
 415         static unsigned char ffd9[] = {0xff, 0xd9};
 416
 417         /* a frame starts with:
 418          *      - 0xff 0xfe
 419          *      - 0x08 0x00     - length (little endian ?!)
 420          *      - 4 bytes = size of whole frame (BE - including header)
 421          *      - 0x00 0x0c
 422          *      - 0xff 0xd8
 423          *      - ..    JPEG image with escape sequences (ff 00)
 424          *              (without ending - ff d9)
 425          */
 426         if (data[0] == 0xff && data[1] == 0xfe) {
 427                 frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
 428                                         ffd9, 2);
 429
 430                 /* put the JPEG 411 header */
 431                 jpeg_put_header(gspca_dev, frame, sd_quant, 0x22);
 432
 433                 /* beginning of the frame */
 434 #define STKHDRSZ 12
 435                 gspca_frame_add(gspca_dev, INTER_PACKET, frame,
 436                                 data + STKHDRSZ, len - STKHDRSZ);
 437 #undef STKHDRSZ
 438                 return;
 439         }
 440         gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
 441 }
 442
 443 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
 444 {
 445         struct sd *sd = (struct sd *) gspca_dev;
 446
 447         sd->brightness = val;
 448         if (gspca_dev->streaming)
 449                 setbrightness(gspca_dev);
 450         return 0;
 451 }
 452
 453 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
 454 {
 455         struct sd *sd = (struct sd *) gspca_dev;
 456
 457         *val = sd->brightness;
 458         return 0;
 459 }
 460
 461 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
 462 {
 463         struct sd *sd = (struct sd *) gspca_dev;
 464
 465         sd->contrast = val;
 466         if (gspca_dev->streaming)
 467                 setcontrast(gspca_dev);
 468         return 0;
 469 }
 470
 471 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
 472 {
 473         struct sd *sd = (struct sd *) gspca_dev;
 474
 475         *val = sd->contrast;
 476         return 0;
 477 }
 478
 479 static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val)
 480 {
 481         struct sd *sd = (struct sd *) gspca_dev;
 482
 483         sd->colors = val;
 484         if (gspca_dev->streaming)
 485                 setcolors(gspca_dev);
 486         return 0;
 487 }
 488
 489 static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val)
 490 {
 491         struct sd *sd = (struct sd *) gspca_dev;
 492
 493         *val = sd->colors;
 494         return 0;
 495 }
 496
 497 static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val)
 498 {
 499         struct sd *sd = (struct sd *) gspca_dev;
 500
 501         sd->lightfreq = val;
 502         if (gspca_dev->streaming)
 503                 setfreq(gspca_dev);
 504         return 0;
 505 }
 506
 507 static int sd_getfreq(struct gspca_dev *gspca_dev, __s32 *val)
 508 {
 509         struct sd *sd = (struct sd *) gspca_dev;
 510
 511         *val = sd->lightfreq;
 512         return 0;
 513 }
 514
 515 static int sd_querymenu(struct gspca_dev *gspca_dev,
 516                         struct v4l2_querymenu *menu)
 517 {
 518         switch (menu->id) {
 519         case V4L2_CID_POWER_LINE_FREQUENCY:
 520                 switch (menu->index) {
 521                 case 1:         /* V4L2_CID_POWER_LINE_FREQUENCY_50HZ */
 522                         strcpy((char *) menu->name, "50 Hz");
 523                         return 0;
 524                 case 2:         /* V4L2_CID_POWER_LINE_FREQUENCY_60HZ */
 525                         strcpy((char *) menu->name, "60 Hz");
 526                         return 0;
 527                 }
 528                 break;
 529         }
 530         return -EINVAL;
 531 }
 532
 533 /* sub-driver description */
 534 static const struct sd_desc sd_desc = {
 535         .name = MODULE_NAME,
 536         .ctrls = sd_ctrls,
 537         .nctrls = ARRAY_SIZE(sd_ctrls),
 538         .config = sd_config,
 539         .open = sd_open,
 540         .start = sd_start,
 541         .stopN = sd_stopN,
 542         .stop0 = sd_stop0,
 543         .close = sd_close,
 544         .pkt_scan = sd_pkt_scan,
 545         .querymenu = sd_querymenu,
 546 };
 547
 548 /* -- module initialisation -- */
 549 #define DVNM(name) .driver_info = (kernel_ulong_t) name
 550 static const __devinitdata struct usb_device_id device_table[] = {
 551         {USB_DEVICE(0x05e1, 0x0893), DVNM("Syntek DV4000")},
 552         {}
 553 };
 554 MODULE_DEVICE_TABLE(usb, device_table);
 555
 556 /* -- device connect -- */
 557 static int sd_probe(struct usb_interface *intf,
 558                         const struct usb_device_id *id)
 559 {
 560         return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
 561                                 THIS_MODULE);
 562 }
 563
 564 static struct usb_driver sd_driver = {
 565         .name = MODULE_NAME,
 566         .id_table = device_table,
 567         .probe = sd_probe,
 568         .disconnect = gspca_disconnect,
 569 };
 570
 571 /* -- module insert / remove -- */
 572 static int __init sd_mod_init(void)
 573 {
 574         if (usb_register(&sd_driver) < 0)
 575                 return -1;
 576         info("registered");
 577         return 0;
 578 }
 579 static void __exit sd_mod_exit(void)
 580 {
 581         usb_deregister(&sd_driver);
 582         info("deregistered");
 583 }
 584
 585 module_init(sd_mod_init);
 586 module_exit(sd_mod_exit);
 587
 588 module_param_named(quant, sd_quant, int, 0644);
 589 MODULE_PARM_DESC(quant, "Quantization index (0..8)");