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 pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  22
  23 #define MODULE_NAME "stk014"
  24
  25 #include "gspca.h"
  26 #include "jpeg.h"
  27
  28 MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
  29 MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver");
  30 MODULE_LICENSE("GPL");
  31
  32 /* controls */
  33 enum e_ctrl {
  34         BRIGHTNESS,
  35         CONTRAST,
  36         COLORS,
  37         LIGHTFREQ,
  38         NCTRLS          /* number of controls */
  39 };
  40
  41 /* specific webcam descriptor */
  42 struct sd {
  43         struct gspca_dev gspca_dev;     /* !! must be the first item */
  44
  45         struct gspca_ctrl ctrls[NCTRLS];
  46
  47         u8 quality;
  48 #define QUALITY_MIN 70
  49 #define QUALITY_MAX 95
  50 #define QUALITY_DEF 88
  51
  52         u8 jpeg_hdr[JPEG_HDR_SZ];
  53 };
  54
  55 /* V4L2 controls supported by the driver */
  56 static void setbrightness(struct gspca_dev *gspca_dev);
  57 static void setcontrast(struct gspca_dev *gspca_dev);
  58 static void setcolors(struct gspca_dev *gspca_dev);
  59 static void setlightfreq(struct gspca_dev *gspca_dev);
  60
  61 static const struct ctrl sd_ctrls[NCTRLS] = {
  62 [BRIGHTNESS] = {
  63             {
  64                 .id      = V4L2_CID_BRIGHTNESS,
  65                 .type    = V4L2_CTRL_TYPE_INTEGER,
  66                 .name    = "Brightness",
  67                 .minimum = 0,
  68                 .maximum = 255,
  69                 .step    = 1,
  70                 .default_value = 127,
  71             },
  72             .set_control = setbrightness
  73         },
  74 [CONTRAST] = {
  75             {
  76                 .id      = V4L2_CID_CONTRAST,
  77                 .type    = V4L2_CTRL_TYPE_INTEGER,
  78                 .name    = "Contrast",
  79                 .minimum = 0,
  80                 .maximum = 255,
  81                 .step    = 1,
  82                 .default_value = 127,
  83             },
  84             .set_control = setcontrast
  85         },
  86 [COLORS] = {
  87             {
  88                 .id      = V4L2_CID_SATURATION,
  89                 .type    = V4L2_CTRL_TYPE_INTEGER,
  90                 .name    = "Color",
  91                 .minimum = 0,
  92                 .maximum = 255,
  93                 .step    = 1,
  94                 .default_value = 127,
  95             },
  96             .set_control = setcolors
  97         },
  98 [LIGHTFREQ] = {
  99             {
 100                 .id      = V4L2_CID_POWER_LINE_FREQUENCY,
 101                 .type    = V4L2_CTRL_TYPE_MENU,
 102                 .name    = "Light frequency filter",
 103                 .minimum = 1,
 104                 .maximum = 2,   /* 0: 0, 1: 50Hz, 2:60Hz */
 105                 .step    = 1,
 106                 .default_value = 1,
 107             },
 108             .set_control = setlightfreq
 109         },
 110 };
 111
 112 static const 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 u8 reg_r(struct gspca_dev *gspca_dev,
 127                         __u16 index)
 128 {
 129         struct usb_device *dev = gspca_dev->dev;
 130         int ret;
 131
 132         if (gspca_dev->usb_err < 0)
 133                 return 0;
 134         ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 135                         0x00,
 136                         USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 137                         0x00,
 138                         index,
 139                         gspca_dev->usb_buf, 1,
 140                         500);
 141         if (ret < 0) {
 142                 pr_err("reg_r err %d\n", ret);
 143                 gspca_dev->usb_err = ret;
 144                 return 0;
 145         }
 146         return gspca_dev->usb_buf[0];
 147 }
 148
 149 /* -- write a register -- */
 150 static void reg_w(struct gspca_dev *gspca_dev,
 151                         __u16 index, __u16 value)
 152 {
 153         struct usb_device *dev = gspca_dev->dev;
 154         int ret;
 155
 156         if (gspca_dev->usb_err < 0)
 157                 return;
 158         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 159                         0x01,
 160                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 161                         value,
 162                         index,
 163                         NULL,
 164                         0,
 165                         500);
 166         if (ret < 0) {
 167                 pr_err("reg_w err %d\n", ret);
 168                 gspca_dev->usb_err = ret;
 169         }
 170 }
 171
 172 /* -- get a bulk value (4 bytes) -- */
 173 static void rcv_val(struct gspca_dev *gspca_dev,
 174                         int ads)
 175 {
 176         struct usb_device *dev = gspca_dev->dev;
 177         int alen, ret;
 178
 179         reg_w(gspca_dev, 0x634, (ads >> 16) & 0xff);
 180         reg_w(gspca_dev, 0x635, (ads >> 8) & 0xff);
 181         reg_w(gspca_dev, 0x636, ads & 0xff);
 182         reg_w(gspca_dev, 0x637, 0);
 183         reg_w(gspca_dev, 0x638, 4);     /* len & 0xff */
 184         reg_w(gspca_dev, 0x639, 0);     /* len >> 8 */
 185         reg_w(gspca_dev, 0x63a, 0);
 186         reg_w(gspca_dev, 0x63b, 0);
 187         reg_w(gspca_dev, 0x630, 5);
 188         if (gspca_dev->usb_err < 0)
 189                 return;
 190         ret = usb_bulk_msg(dev,
 191                         usb_rcvbulkpipe(dev, 0x05),
 192                         gspca_dev->usb_buf,
 193                         4,              /* length */
 194                         &alen,
 195                         500);           /* timeout in milliseconds */
 196         if (ret < 0) {
 197                 pr_err("rcv_val err %d\n", ret);
 198                 gspca_dev->usb_err = ret;
 199         }
 200 }
 201
 202 /* -- send a bulk value -- */
 203 static void snd_val(struct gspca_dev *gspca_dev,
 204                         int ads,
 205                         unsigned int val)
 206 {
 207         struct usb_device *dev = gspca_dev->dev;
 208         int alen, ret;
 209         __u8 seq = 0;
 210
 211         if (ads == 0x003f08) {
 212                 reg_r(gspca_dev, 0x0704);
 213                 seq = reg_r(gspca_dev, 0x0705);
 214                 reg_r(gspca_dev, 0x0650);
 215                 reg_w(gspca_dev, 0x654, seq);
 216         } else {
 217                 reg_w(gspca_dev, 0x654, (ads >> 16) & 0xff);
 218         }
 219         reg_w(gspca_dev, 0x655, (ads >> 8) & 0xff);
 220         reg_w(gspca_dev, 0x656, ads & 0xff);
 221         reg_w(gspca_dev, 0x657, 0);
 222         reg_w(gspca_dev, 0x658, 0x04);  /* size */
 223         reg_w(gspca_dev, 0x659, 0);
 224         reg_w(gspca_dev, 0x65a, 0);
 225         reg_w(gspca_dev, 0x65b, 0);
 226         reg_w(gspca_dev, 0x650, 5);
 227         if (gspca_dev->usb_err < 0)
 228                 return;
 229         gspca_dev->usb_buf[0] = val >> 24;
 230         gspca_dev->usb_buf[1] = val >> 16;
 231         gspca_dev->usb_buf[2] = val >> 8;
 232         gspca_dev->usb_buf[3] = val;
 233         ret = usb_bulk_msg(dev,
 234                         usb_sndbulkpipe(dev, 6),
 235                         gspca_dev->usb_buf,
 236                         4,
 237                         &alen,
 238                         500);   /* timeout in milliseconds */
 239         if (ret < 0) {
 240                 pr_err("snd_val err %d\n", ret);
 241                 gspca_dev->usb_err = ret;
 242         } else {
 243                 if (ads == 0x003f08) {
 244                         seq += 4;
 245                         seq &= 0x3f;
 246                         reg_w(gspca_dev, 0x705, seq);
 247                 }
 248         }
 249 }
 250
 251 /* set a camera parameter */
 252 static void set_par(struct gspca_dev *gspca_dev,
 253                    int parval)
 254 {
 255         snd_val(gspca_dev, 0x003f08, parval);
 256 }
 257
 258 static void setbrightness(struct gspca_dev *gspca_dev)
 259 {
 260         struct sd *sd = (struct sd *) gspca_dev;
 261         int parval;
 262
 263         parval = 0x06000000             /* whiteness */
 264                 + (sd->ctrls[BRIGHTNESS].val << 16);
 265         set_par(gspca_dev, parval);
 266 }
 267
 268 static void setcontrast(struct gspca_dev *gspca_dev)
 269 {
 270         struct sd *sd = (struct sd *) gspca_dev;
 271         int parval;
 272
 273         parval = 0x07000000             /* contrast */
 274                 + (sd->ctrls[CONTRAST].val << 16);
 275         set_par(gspca_dev, parval);
 276 }
 277
 278 static void setcolors(struct gspca_dev *gspca_dev)
 279 {
 280         struct sd *sd = (struct sd *) gspca_dev;
 281         int parval;
 282
 283         parval = 0x08000000             /* saturation */
 284                 + (sd->ctrls[COLORS].val << 16);
 285         set_par(gspca_dev, parval);
 286 }
 287
 288 static void setlightfreq(struct gspca_dev *gspca_dev)
 289 {
 290         struct sd *sd = (struct sd *) gspca_dev;
 291
 292         set_par(gspca_dev, sd->ctrls[LIGHTFREQ].val == 1
 293                         ? 0x33640000            /* 50 Hz */
 294                         : 0x33780000);          /* 60 Hz */
 295 }
 296
 297 /* this function is called at probe time */
 298 static int sd_config(struct gspca_dev *gspca_dev,
 299                         const struct usb_device_id *id)
 300 {
 301         struct sd *sd = (struct sd *) gspca_dev;
 302
 303         gspca_dev->cam.cam_mode = vga_mode;
 304         gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
 305         gspca_dev->cam.ctrls = sd->ctrls;
 306         sd->quality = QUALITY_DEF;
 307         return 0;
 308 }
 309
 310 /* this function is called at probe and resume time */
 311 static int sd_init(struct gspca_dev *gspca_dev)
 312 {
 313         u8 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 (gspca_dev->usb_err >= 0) {
 319                 if (ret != 0xff) {
 320                         pr_err("init reg: 0x%02x\n", ret);
 321                         gspca_dev->usb_err = -EIO;
 322                 }
 323         }
 324         return gspca_dev->usb_err;
 325 }
 326
 327 /* -- start the camera -- */
 328 static int sd_start(struct gspca_dev *gspca_dev)
 329 {
 330         struct sd *sd = (struct sd *) gspca_dev;
 331         int ret, value;
 332
 333         /* create the JPEG header */
 334         jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width,
 335                         0x22);          /* JPEG 411 */
 336         jpeg_set_qual(sd->jpeg_hdr, sd->quality);
 337
 338         /* work on alternate 1 */
 339         usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
 340
 341         set_par(gspca_dev, 0x10000000);
 342         set_par(gspca_dev, 0x00000000);
 343         set_par(gspca_dev, 0x8002e001);
 344         set_par(gspca_dev, 0x14000000);
 345         if (gspca_dev->width > 320)
 346                 value = 0x8002e001;             /* 640x480 */
 347         else
 348                 value = 0x4001f000;             /* 320x240 */
 349         set_par(gspca_dev, value);
 350         ret = usb_set_interface(gspca_dev->dev,
 351                                         gspca_dev->iface,
 352                                         gspca_dev->alt);
 353         if (ret < 0) {
 354                 pr_err("set intf %d %d failed\n",
 355                        gspca_dev->iface, gspca_dev->alt);
 356                 gspca_dev->usb_err = ret;
 357                 goto out;
 358         }
 359          reg_r(gspca_dev, 0x0630);
 360         rcv_val(gspca_dev, 0x000020);   /* << (value ff ff ff ff) */
 361         reg_r(gspca_dev, 0x0650);
 362         snd_val(gspca_dev, 0x000020, 0xffffffff);
 363         reg_w(gspca_dev, 0x0620, 0);
 364         reg_w(gspca_dev, 0x0630, 0);
 365         reg_w(gspca_dev, 0x0640, 0);
 366         reg_w(gspca_dev, 0x0650, 0);
 367         reg_w(gspca_dev, 0x0660, 0);
 368         setbrightness(gspca_dev);               /* whiteness */
 369         setcontrast(gspca_dev);                 /* contrast */
 370         setcolors(gspca_dev);                   /* saturation */
 371         set_par(gspca_dev, 0x09800000);         /* Red ? */
 372         set_par(gspca_dev, 0x0a800000);         /* Green ? */
 373         set_par(gspca_dev, 0x0b800000);         /* Blue ? */
 374         set_par(gspca_dev, 0x0d030000);         /* Gamma ? */
 375         setlightfreq(gspca_dev);
 376
 377         /* start the video flow */
 378         set_par(gspca_dev, 0x01000000);
 379         set_par(gspca_dev, 0x01000000);
 380         if (gspca_dev->usb_err >= 0)
 381                 PDEBUG(D_STREAM, "camera started alt: 0x%02x",
 382                                 gspca_dev->alt);
 383 out:
 384         return gspca_dev->usb_err;
 385 }
 386
 387 static void sd_stopN(struct gspca_dev *gspca_dev)
 388 {
 389         struct usb_device *dev = gspca_dev->dev;
 390
 391         set_par(gspca_dev, 0x02000000);
 392         set_par(gspca_dev, 0x02000000);
 393         usb_set_interface(dev, gspca_dev->iface, 1);
 394         reg_r(gspca_dev, 0x0630);
 395         rcv_val(gspca_dev, 0x000020);   /* << (value ff ff ff ff) */
 396         reg_r(gspca_dev, 0x0650);
 397         snd_val(gspca_dev, 0x000020, 0xffffffff);
 398         reg_w(gspca_dev, 0x0620, 0);
 399         reg_w(gspca_dev, 0x0630, 0);
 400         reg_w(gspca_dev, 0x0640, 0);
 401         reg_w(gspca_dev, 0x0650, 0);
 402         reg_w(gspca_dev, 0x0660, 0);
 403         PDEBUG(D_STREAM, "camera stopped");
 404 }
 405
 406 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 407                         u8 *data,                       /* isoc packet */
 408                         int len)                        /* iso packet length */
 409 {
 410         struct sd *sd = (struct sd *) gspca_dev;
 411         static unsigned char ffd9[] = {0xff, 0xd9};
 412
 413         /* a frame starts with:
 414          *      - 0xff 0xfe
 415          *      - 0x08 0x00     - length (little endian ?!)
 416          *      - 4 bytes = size of whole frame (BE - including header)
 417          *      - 0x00 0x0c
 418          *      - 0xff 0xd8
 419          *      - ..    JPEG image with escape sequences (ff 00)
 420          *              (without ending - ff d9)
 421          */
 422         if (data[0] == 0xff && data[1] == 0xfe) {
 423                 gspca_frame_add(gspca_dev, LAST_PACKET,
 424                                 ffd9, 2);
 425
 426                 /* put the JPEG 411 header */
 427                 gspca_frame_add(gspca_dev, FIRST_PACKET,
 428                         sd->jpeg_hdr, JPEG_HDR_SZ);
 429
 430                 /* beginning of the frame */
 431 #define STKHDRSZ 12
 432                 data += STKHDRSZ;
 433                 len -= STKHDRSZ;
 434         }
 435         gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
 436 }
 437
 438 static int sd_querymenu(struct gspca_dev *gspca_dev,
 439                         struct v4l2_querymenu *menu)
 440 {
 441         static const char *freq_nm[3] = {"NoFliker", "50 Hz", "60 Hz"};
 442
 443         switch (menu->id) {
 444         case V4L2_CID_POWER_LINE_FREQUENCY:
 445                 if ((unsigned) menu->index >= ARRAY_SIZE(freq_nm))
 446                         break;
 447                 strcpy((char *) menu->name, freq_nm[menu->index]);
 448                 return 0;
 449         }
 450         return -EINVAL;
 451 }
 452
 453 static int sd_set_jcomp(struct gspca_dev *gspca_dev,
 454                         struct v4l2_jpegcompression *jcomp)
 455 {
 456         struct sd *sd = (struct sd *) gspca_dev;
 457
 458         if (jcomp->quality < QUALITY_MIN)
 459                 sd->quality = QUALITY_MIN;
 460         else if (jcomp->quality > QUALITY_MAX)
 461                 sd->quality = QUALITY_MAX;
 462         else
 463                 sd->quality = jcomp->quality;
 464         if (gspca_dev->streaming)
 465                 jpeg_set_qual(sd->jpeg_hdr, sd->quality);
 466         return gspca_dev->usb_err;
 467 }
 468
 469 static int sd_get_jcomp(struct gspca_dev *gspca_dev,
 470                         struct v4l2_jpegcompression *jcomp)
 471 {
 472         struct sd *sd = (struct sd *) gspca_dev;
 473
 474         memset(jcomp, 0, sizeof *jcomp);
 475         jcomp->quality = sd->quality;
 476         jcomp->jpeg_markers = V4L2_JPEG_MARKER_DHT
 477                         | V4L2_JPEG_MARKER_DQT;
 478         return 0;
 479 }
 480
 481 /* sub-driver description */
 482 static const struct sd_desc sd_desc = {
 483         .name = MODULE_NAME,
 484         .ctrls = sd_ctrls,
 485         .nctrls = NCTRLS,
 486         .config = sd_config,
 487         .init = sd_init,
 488         .start = sd_start,
 489         .stopN = sd_stopN,
 490         .pkt_scan = sd_pkt_scan,
 491         .querymenu = sd_querymenu,
 492         .get_jcomp = sd_get_jcomp,
 493         .set_jcomp = sd_set_jcomp,
 494 };
 495
 496 /* -- module initialisation -- */
 497 static const struct usb_device_id device_table[] = {
 498         {USB_DEVICE(0x05e1, 0x0893)},
 499         {}
 500 };
 501 MODULE_DEVICE_TABLE(usb, device_table);
 502
 503 /* -- device connect -- */
 504 static int sd_probe(struct usb_interface *intf,
 505                         const struct usb_device_id *id)
 506 {
 507         return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
 508                                 THIS_MODULE);
 509 }
 510
 511 static struct usb_driver sd_driver = {
 512         .name = MODULE_NAME,
 513         .id_table = device_table,
 514         .probe = sd_probe,
 515         .disconnect = gspca_disconnect,
 516 #ifdef CONFIG_PM
 517         .suspend = gspca_suspend,
 518         .resume = gspca_resume,
 519 #endif
 520 };
 521
 522 module_usb_driver(sd_driver);