git.oblomov.eu Git - 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 #define DRIVER_VERSION_NUMBER   KERNEL_VERSION(2, 1, 4)
  27 static const char version[] = "2.1.4";
  28
  29 MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
  30 MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver");
  31 MODULE_LICENSE("GPL");
  32
  33 /* specific webcam descriptor */
  34 struct sd {
  35         struct gspca_dev gspca_dev;     /* !! must be the first item */
  36
  37         unsigned char brightness;
  38         unsigned char contrast;
  39         unsigned char colors;
  40         unsigned char lightfreq;
  41 };
  42
  43 /* global parameters */
  44 static int sd_quant = 7;                /* <= 4 KO - 7: good (enough!) */
  45
  46 /* V4L2 controls supported by the driver */
  47 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
  48 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
  49 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
  50 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
  51 static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val);
  52 static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val);
  53 static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val);
  54 static int sd_getfreq(struct gspca_dev *gspca_dev, __s32 *val);
  55
  56 static struct ctrl sd_ctrls[] = {
  57         {
  58             {
  59                 .id      = V4L2_CID_BRIGHTNESS,
  60                 .type    = V4L2_CTRL_TYPE_INTEGER,
  61                 .name    = "Brightness",
  62                 .minimum = 0,
  63                 .maximum = 255,
  64                 .step    = 1,
  65 #define BRIGHTNESS_DEF 127
  66                 .default_value = BRIGHTNESS_DEF,
  67             },
  68             .set = sd_setbrightness,
  69             .get = sd_getbrightness,
  70         },
  71         {
  72             {
  73                 .id      = V4L2_CID_CONTRAST,
  74                 .type    = V4L2_CTRL_TYPE_INTEGER,
  75                 .name    = "Contrast",
  76                 .minimum = 0,
  77                 .maximum = 255,
  78                 .step    = 1,
  79 #define CONTRAST_DEF 127
  80                 .default_value = CONTRAST_DEF,
  81             },
  82             .set = sd_setcontrast,
  83             .get = sd_getcontrast,
  84         },
  85         {
  86             {
  87                 .id      = V4L2_CID_SATURATION,
  88                 .type    = V4L2_CTRL_TYPE_INTEGER,
  89                 .name    = "Color",
  90                 .minimum = 0,
  91                 .maximum = 255,
  92                 .step    = 1,
  93 #define COLOR_DEF 127
  94                 .default_value = COLOR_DEF,
  95             },
  96             .set = sd_setcolors,
  97             .get = sd_getcolors,
  98         },
  99         {
 100             {
 101                 .id      = V4L2_CID_POWER_LINE_FREQUENCY,
 102                 .type    = V4L2_CTRL_TYPE_MENU,
 103                 .name    = "Light frequency filter",
 104                 .minimum = 1,
 105                 .maximum = 2,   /* 0: 0, 1: 50Hz, 2:60Hz */
 106                 .step    = 1,
 107 #define FREQ_DEF 1
 108                 .default_value = FREQ_DEF,
 109             },
 110             .set = sd_setfreq,
 111             .get = sd_getfreq,
 112         },
 113 };
 114
 115 static struct cam_mode vga_mode[] = {
 116         {V4L2_PIX_FMT_JPEG, 320, 240},
 117         {V4L2_PIX_FMT_JPEG, 640, 480},
 118 };
 119
 120 /* -- read a register -- */
 121 static int reg_r(struct gspca_dev *gspca_dev,
 122                         __u16 index, __u8 *buf)
 123 {
 124         struct usb_device *dev = gspca_dev->dev;
 125         int ret;
 126
 127         ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 128                         0x00,
 129                         USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 130                         0x00,
 131                         index,
 132                         buf, 1,
 133                         500);
 134         if (ret < 0)
 135                 PDEBUG(D_ERR, "reg_r err %d", ret);
 136         return ret;
 137 }
 138
 139 /* -- write a register -- */
 140 static int reg_w(struct gspca_dev *gspca_dev,
 141                         __u16 index, __u16 value)
 142 {
 143         struct usb_device *dev = gspca_dev->dev;
 144         int ret;
 145
 146         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 147                         0x01,
 148                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 149                         value,
 150                         index,
 151                         NULL,
 152                         0,
 153                         500);
 154         if (ret < 0)
 155                 PDEBUG(D_ERR, "reg_w err %d", ret);
 156         return ret;
 157 }
 158
 159 /* -- get a value -- */
 160 static int rcv_val(struct gspca_dev *gspca_dev,
 161                         int ads,
 162                         int len)
 163 {
 164         struct usb_device *dev = gspca_dev->dev;
 165         int alen, ret;
 166         unsigned char bulk_buf[4];
 167
 168         reg_w(gspca_dev, 0x634, (ads >> 16) & 0xff);
 169         reg_w(gspca_dev, 0x635, (ads >> 8) & 0xff);
 170         reg_w(gspca_dev, 0x636, ads & 0xff);
 171         reg_w(gspca_dev, 0x637, 0);
 172         reg_w(gspca_dev, 0x638, len & 0xff);
 173         reg_w(gspca_dev, 0x639, len >> 8);
 174         reg_w(gspca_dev, 0x63a, 0);
 175         reg_w(gspca_dev, 0x63b, 0);
 176         reg_w(gspca_dev, 0x630, 5);
 177         if (len > sizeof bulk_buf)
 178                 return -1;
 179         ret = usb_bulk_msg(dev,
 180                         usb_rcvbulkpipe(dev, 5),
 181                         bulk_buf,
 182                         len,
 183                         &alen,
 184                         500);   /* timeout in milliseconds */
 185         return ret;
 186 }
 187
 188 /* -- send a value -- */
 189 static int snd_val(struct gspca_dev *gspca_dev,
 190                         int ads,
 191                         unsigned int val)
 192 {
 193         struct usb_device *dev = gspca_dev->dev;
 194         int alen, ret;
 195         __u8 value, seq;
 196         unsigned char bulk_buf[4];
 197
 198         if (ads == 0x003f08) {
 199                 ret = reg_r(gspca_dev, 0x0704, &value);
 200                 if (ret < 0)
 201                         goto ko;
 202                 ret = reg_r(gspca_dev, 0x0705, &seq);
 203                 if (ret < 0)
 204                         goto ko;
 205                 ret = reg_r(gspca_dev, 0x0650, &value);
 206                 if (ret < 0)
 207                         goto ko;
 208                 reg_w(gspca_dev, 0x654, seq);
 209         } else
 210                 reg_w(gspca_dev, 0x654, (ads >> 16) & 0xff);
 211         reg_w(gspca_dev, 0x655, (ads >> 8) & 0xff);
 212         reg_w(gspca_dev, 0x656, ads & 0xff);
 213         reg_w(gspca_dev, 0x657, 0);
 214         reg_w(gspca_dev, 0x658, 0x04);  /* size */
 215         reg_w(gspca_dev, 0x659, 0);
 216         reg_w(gspca_dev, 0x65a, 0);
 217         reg_w(gspca_dev, 0x65b, 0);
 218         reg_w(gspca_dev, 0x650, 5);
 219         bulk_buf[0] = (val >> 24) & 0xff;
 220         bulk_buf[1] = (val >> 16) & 0xff;
 221         bulk_buf[2] = (val >> 8) & 0xff;
 222         bulk_buf[3] = val & 0xff;
 223         ret = usb_bulk_msg(dev,
 224                         usb_sndbulkpipe(dev, 6),
 225                         bulk_buf,
 226                         4,
 227                         &alen,
 228                         500);   /* timeout in milliseconds */
 229         if (ret < 0)
 230                 goto ko;
 231         if (ads == 0x003f08) {
 232                 seq += 4;
 233                 seq &= 0x3f;
 234                 reg_w(gspca_dev, 0x705, seq);
 235         }
 236         return ret;
 237 ko:
 238         PDEBUG(D_ERR, "snd_val err %d", ret);
 239         return ret;
 240 }
 241
 242 /* set a camera parameter */
 243 static int set_par(struct gspca_dev *gspca_dev,
 244                    int parval)
 245 {
 246         return snd_val(gspca_dev, 0x003f08, parval);
 247 }
 248
 249 static void setbrightness(struct gspca_dev *gspca_dev)
 250 {
 251         struct sd *sd = (struct sd *) gspca_dev;
 252         int parval;
 253
 254         parval = 0x06000000             /* whiteness */
 255                 + (sd->brightness << 16);
 256         set_par(gspca_dev, parval);
 257 }
 258
 259 static void setcontrast(struct gspca_dev *gspca_dev)
 260 {
 261         struct sd *sd = (struct sd *) gspca_dev;
 262         int parval;
 263
 264         parval = 0x07000000             /* contrast */
 265                 + (sd->contrast << 16);
 266         set_par(gspca_dev, parval);
 267 }
 268
 269 static void setcolors(struct gspca_dev *gspca_dev)
 270 {
 271         struct sd *sd = (struct sd *) gspca_dev;
 272         int parval;
 273
 274         parval = 0x08000000             /* saturation */
 275                 + (sd->colors << 16);
 276         set_par(gspca_dev, parval);
 277 }
 278
 279 static void setfreq(struct gspca_dev *gspca_dev)
 280 {
 281         struct sd *sd = (struct sd *) gspca_dev;
 282
 283         set_par(gspca_dev, sd->lightfreq == 1
 284                         ? 0x33640000            /* 50 Hz */
 285                         : 0x33780000);          /* 60 Hz */
 286 }
 287
 288 /* this function is called at probe time */
 289 static int sd_config(struct gspca_dev *gspca_dev,
 290                         const struct usb_device_id *id)
 291 {
 292         struct sd *sd = (struct sd *) gspca_dev;
 293         struct cam *cam = &gspca_dev->cam;
 294
 295         cam->dev_name = (char *) id->driver_info;
 296         cam->epaddr = 0x02;
 297         gspca_dev->cam.cam_mode = vga_mode;
 298         gspca_dev->cam.nmodes = sizeof vga_mode / sizeof vga_mode[0];
 299         sd->brightness = BRIGHTNESS_DEF;
 300         sd->contrast = CONTRAST_DEF;
 301         sd->colors = COLOR_DEF;
 302         sd->lightfreq = FREQ_DEF;
 303         return 0;
 304 }
 305
 306 /* this function is called at open time */
 307 static int sd_open(struct gspca_dev *gspca_dev)
 308 {
 309         __u8 value;
 310         int ret;
 311
 312         /* check if the device responds */
 313         usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
 314         ret = reg_r(gspca_dev, 0x0740, &value);
 315         if (ret < 0)
 316                 return ret;
 317         if (value != 0xff) {
 318                 PDEBUG(D_ERR|D_STREAM, "init reg: 0x%02x", value);
 319                 return -1;
 320         }
 321         return 0;
 322 }
 323
 324 /* -- start the camera -- */
 325 static void sd_start(struct gspca_dev *gspca_dev)
 326 {
 327         __u8 dum;
 328         int ret, value;
 329
 330         /* work on alternate 1 */
 331         usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
 332
 333         set_par(gspca_dev, 0x10000000);
 334         set_par(gspca_dev, 0x00000000);
 335         set_par(gspca_dev, 0x8002e001);
 336         set_par(gspca_dev, 0x14000000);
 337         if (gspca_dev->width > 320)
 338                 value = 0x8002e001;             /* 640x480 */
 339         else
 340                 value = 0x4001f000;             /* 320x240 */
 341         set_par(gspca_dev, value);
 342         ret = usb_set_interface(gspca_dev->dev,
 343                                         gspca_dev->iface,
 344                                         gspca_dev->alt);
 345         if (ret < 0) {
 346                 PDEBUG(D_ERR|D_STREAM, "set intf %d %d failed",
 347                         gspca_dev->iface, gspca_dev->alt);
 348                 goto out;
 349         }
 350         ret = reg_r(gspca_dev, 0x0630, &dum);
 351         if (ret < 0)
 352                 goto out;
 353         rcv_val(gspca_dev, 0x000020, 4);        /* << (value ff ff ff ff) */
 354         ret = reg_r(gspca_dev, 0x0650, &dum);
 355         if (ret < 0)
 356                 goto out;
 357         snd_val(gspca_dev, 0x000020, 0xffffffff);
 358         reg_w(gspca_dev, 0x0620, 0);
 359         reg_w(gspca_dev, 0x0630, 0);
 360         reg_w(gspca_dev, 0x0640, 0);
 361         reg_w(gspca_dev, 0x0650, 0);
 362         reg_w(gspca_dev, 0x0660, 0);
 363         setbrightness(gspca_dev);               /* whiteness */
 364         setcontrast(gspca_dev);                 /* contrast */
 365         setcolors(gspca_dev);                   /* saturation */
 366         set_par(gspca_dev, 0x09800000);         /* Red ? */
 367         set_par(gspca_dev, 0x0a800000);         /* Green ? */
 368         set_par(gspca_dev, 0x0b800000);         /* Blue ? */
 369         set_par(gspca_dev, 0x0d030000);         /* Gamma ? */
 370         setfreq(gspca_dev);                     /* light frequency */
 371
 372         /* start the video flow */
 373         set_par(gspca_dev, 0x01000000);
 374         set_par(gspca_dev, 0x01000000);
 375         PDEBUG(D_STREAM, "camera started alt: 0x%02x", gspca_dev->alt);
 376         return;
 377 out:
 378         PDEBUG(D_ERR|D_STREAM, "camera start err %d", ret);
 379 }
 380
 381 static void sd_stopN(struct gspca_dev *gspca_dev)
 382 {
 383         struct usb_device *dev = gspca_dev->dev;
 384         __u8 value;
 385
 386         set_par(gspca_dev, 0x02000000);
 387         set_par(gspca_dev, 0x02000000);
 388         usb_set_interface(dev, gspca_dev->iface, 1);
 389         reg_r(gspca_dev, 0x0630, &value);
 390         rcv_val(gspca_dev, 0x000020, 4);        /* << (value ff ff ff ff) */
 391         reg_r(gspca_dev, 0x0650, &value);
 392         snd_val(gspca_dev, 0x000020, 0xffffffff);
 393         reg_w(gspca_dev, 0x0620, 0);
 394         reg_w(gspca_dev, 0x0630, 0);
 395         reg_w(gspca_dev, 0x0640, 0);
 396         reg_w(gspca_dev, 0x0650, 0);
 397         reg_w(gspca_dev, 0x0660, 0);
 398         PDEBUG(D_STREAM, "camera stopped");
 399 }
 400
 401 static void sd_stop0(struct gspca_dev *gspca_dev)
 402 {
 403 }
 404
 405 static void sd_close(struct gspca_dev *gspca_dev)
 406 {
 407 }
 408
 409 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 410                         struct gspca_frame *frame,      /* target */
 411                         __u8 *data,                     /* isoc packet */
 412                         int len)                        /* iso packet length */
 413 {
 414         static unsigned char ffd9[] = {0xff, 0xd9};
 415
 416         /* a frame starts with:
 417          *      - 0xff 0xfe
 418          *      - 0x08 0x00     - length (little endian ?!)
 419          *      - 4 bytes = size of whole frame (BE - including header)
 420          *      - 0x00 0x0c
 421          *      - 0xff 0xd8
 422          *      - ..    JPEG image with escape sequences (ff 00)
 423          *              (without ending - ff d9)
 424          */
 425         if (data[0] == 0xff && data[1] == 0xfe) {
 426                 frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
 427                                         ffd9, 2);
 428
 429                 /* put the JPEG 411 header */
 430                 jpeg_put_header(gspca_dev, frame, sd_quant, 0x22);
 431
 432                 /* beginning of the frame */
 433 #define STKHDRSZ 12
 434                 gspca_frame_add(gspca_dev, INTER_PACKET, frame,
 435                                 data + STKHDRSZ, len - STKHDRSZ);
 436 #undef STKHDRSZ
 437                 return;
 438         }
 439         gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
 440 }
 441
 442 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
 443 {
 444         struct sd *sd = (struct sd *) gspca_dev;
 445
 446         sd->brightness = val;
 447         if (gspca_dev->streaming)
 448                 setbrightness(gspca_dev);
 449         return 0;
 450 }
 451
 452 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
 453 {
 454         struct sd *sd = (struct sd *) gspca_dev;
 455
 456         *val = sd->brightness;
 457         return 0;
 458 }
 459
 460 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
 461 {
 462         struct sd *sd = (struct sd *) gspca_dev;
 463
 464         sd->contrast = val;
 465         if (gspca_dev->streaming)
 466                 setcontrast(gspca_dev);
 467         return 0;
 468 }
 469
 470 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
 471 {
 472         struct sd *sd = (struct sd *) gspca_dev;
 473
 474         *val = sd->contrast;
 475         return 0;
 476 }
 477
 478 static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val)
 479 {
 480         struct sd *sd = (struct sd *) gspca_dev;
 481
 482         sd->colors = val;
 483         if (gspca_dev->streaming)
 484                 setcolors(gspca_dev);
 485         return 0;
 486 }
 487
 488 static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val)
 489 {
 490         struct sd *sd = (struct sd *) gspca_dev;
 491
 492         *val = sd->colors;
 493         return 0;
 494 }
 495
 496 static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val)
 497 {
 498         struct sd *sd = (struct sd *) gspca_dev;
 499
 500         sd->lightfreq = val;
 501         if (gspca_dev->streaming)
 502                 setfreq(gspca_dev);
 503         return 0;
 504 }
 505
 506 static int sd_getfreq(struct gspca_dev *gspca_dev, __s32 *val)
 507 {
 508         struct sd *sd = (struct sd *) gspca_dev;
 509
 510         *val = sd->lightfreq;
 511         return 0;
 512 }
 513
 514 static int sd_querymenu(struct gspca_dev *gspca_dev,
 515                         struct v4l2_querymenu *menu)
 516 {
 517         switch (menu->id) {
 518         case V4L2_CID_POWER_LINE_FREQUENCY:
 519                 switch (menu->index) {
 520                 case 1:         /* V4L2_CID_POWER_LINE_FREQUENCY_50HZ */
 521                         strcpy((char *) menu->name, "50 Hz");
 522                         return 0;
 523                 case 2:         /* V4L2_CID_POWER_LINE_FREQUENCY_60HZ */
 524                         strcpy((char *) menu->name, "60 Hz");
 525                         return 0;
 526                 }
 527                 break;
 528         }
 529         return -EINVAL;
 530 }
 531
 532 /* sub-driver description */
 533 static struct sd_desc sd_desc = {
 534         .name = MODULE_NAME,
 535         .ctrls = sd_ctrls,
 536         .nctrls = sizeof sd_ctrls / sizeof sd_ctrls[0],
 537         .config = sd_config,
 538         .open = sd_open,
 539         .start = sd_start,
 540         .stopN = sd_stopN,
 541         .stop0 = sd_stop0,
 542         .close = sd_close,
 543         .pkt_scan = sd_pkt_scan,
 544         .querymenu = sd_querymenu,
 545 };
 546
 547 /* -- module initialisation -- */
 548 #define DVNM(name) .driver_info = (kernel_ulong_t) name
 549 static __devinitdata struct usb_device_id device_table[] = {
 550         {USB_DEVICE(0x05e1, 0x0893), DVNM("Syntek DV4000")},
 551         {}
 552 };
 553 MODULE_DEVICE_TABLE(usb, device_table);
 554
 555 /* -- device connect -- */
 556 static int sd_probe(struct usb_interface *intf,
 557                         const struct usb_device_id *id)
 558 {
 559         return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
 560                                 THIS_MODULE);
 561 }
 562
 563 static struct usb_driver sd_driver = {
 564         .name = MODULE_NAME,
 565         .id_table = device_table,
 566         .probe = sd_probe,
 567         .disconnect = gspca_disconnect,
 568 };
 569
 570 /* -- module insert / remove -- */
 571 static int __init sd_mod_init(void)
 572 {
 573         if (usb_register(&sd_driver) < 0)
 574                 return -1;
 575         info("v%s registered", version);
 576         return 0;
 577 }
 578 static void __exit sd_mod_exit(void)
 579 {
 580         usb_deregister(&sd_driver);
 581         info("deregistered");
 582 }
 583
 584 module_init(sd_mod_init);
 585 module_exit(sd_mod_exit);
 586
 587 module_param_named(quant, sd_quant, int, 0644);
 588 MODULE_PARM_DESC(quant, "Quantization index (0..8)");