drivers/media/video/gspca/tv8532.c

   1 /*
   2  * Quickcam cameras initialization data
   3  *
   4  * V4L2 by 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 "tv8532"
  22
  23 #include "gspca.h"
  24
  25 MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
  26 MODULE_DESCRIPTION("TV8532 USB Camera Driver");
  27 MODULE_LICENSE("GPL");
  28
  29 /* specific webcam descriptor */
  30 struct sd {
  31         struct gspca_dev gspca_dev;     /* !! must be the first item */
  32
  33         __u16 exposure;
  34         __u16 gain;
  35
  36         __u8 packet;
  37 };
  38
  39 /* V4L2 controls supported by the driver */
  40 static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val);
  41 static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val);
  42 static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val);
  43 static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
  44
  45 static const struct ctrl sd_ctrls[] = {
  46         {
  47          {
  48           .id = V4L2_CID_EXPOSURE,
  49           .type = V4L2_CTRL_TYPE_INTEGER,
  50           .name = "Exposure",
  51           .minimum = 1,
  52           .maximum = 0x18f,
  53           .step = 1,
  54 #define EXPOSURE_DEF 0x18f
  55           .default_value = EXPOSURE_DEF,
  56           },
  57          .set = sd_setexposure,
  58          .get = sd_getexposure,
  59          },
  60         {
  61          {
  62           .id = V4L2_CID_GAIN,
  63           .type = V4L2_CTRL_TYPE_INTEGER,
  64           .name = "Gain",
  65           .minimum = 0,
  66           .maximum = 0x7ff,
  67           .step = 1,
  68 #define GAIN_DEF 0x100
  69           .default_value = GAIN_DEF,
  70           },
  71          .set = sd_setgain,
  72          .get = sd_getgain,
  73          },
  74 };
  75
  76 static const struct v4l2_pix_format sif_mode[] = {
  77         {176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
  78                 .bytesperline = 176,
  79                 .sizeimage = 176 * 144,
  80                 .colorspace = V4L2_COLORSPACE_SRGB,
  81                 .priv = 1},
  82         {352, 288, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
  83                 .bytesperline = 352,
  84                 .sizeimage = 352 * 288,
  85                 .colorspace = V4L2_COLORSPACE_SRGB,
  86                 .priv = 0},
  87 };
  88
  89 /* TV-8532A (ICM532A) registers (LE) */
  90 #define R00_PART_CONTROL 0x00
  91 #define         LATENT_CHANGE   0x80
  92 #define         EXPO_CHANGE     0x04
  93 #define R01_TIMING_CONTROL_LOW 0x01
  94 #define         CMD_EEprom_Open 0x30
  95 #define         CMD_EEprom_Close 0x29
  96 #define R03_TABLE_ADDR 0x03
  97 #define R04_WTRAM_DATA_L 0x04
  98 #define R05_WTRAM_DATA_M 0x05
  99 #define R06_WTRAM_DATA_H 0x06
 100 #define R07_TABLE_LEN   0x07
 101 #define R08_RAM_WRITE_ACTION 0x08
 102 #define R0C_AD_WIDTHL   0x0c
 103 #define R0D_AD_WIDTHH   0x0d
 104 #define R0E_AD_HEIGHTL  0x0e
 105 #define R0F_AD_HEIGHTH  0x0f
 106 #define R10_AD_COL_BEGINL 0x10
 107 #define R11_AD_COL_BEGINH 0x11
 108 #define         MIRROR          0x04    /* [10] */
 109 #define R14_AD_ROW_BEGINL 0x14
 110 #define R15_AD_ROWBEGINH  0x15
 111 #define R1C_AD_EXPOSE_TIMEL 0x1c
 112 #define R20_GAIN_G1L    0x20
 113 #define R21_GAIN_G1H    0x21
 114 #define R22_GAIN_RL     0x22
 115 #define R23_GAIN_RH     0x23
 116 #define R24_GAIN_BL     0x24
 117 #define R25_GAIN_BH     0x25
 118 #define R26_GAIN_G2L    0x26
 119 #define R27_GAIN_G2H    0x27
 120 #define R28_QUANT       0x28
 121 #define R29_LINE        0x29
 122 #define R2C_POLARITY    0x2c
 123 #define R2D_POINT       0x2d
 124 #define R2E_POINTH      0x2e
 125 #define R2F_POINTB      0x2f
 126 #define R30_POINTBH     0x30
 127 #define R31_UPD         0x31
 128 #define R2A_HIGH_BUDGET 0x2a
 129 #define R2B_LOW_BUDGET  0x2b
 130 #define R34_VID         0x34
 131 #define R35_VIDH        0x35
 132 #define R36_PID         0x36
 133 #define R37_PIDH        0x37
 134 #define R39_Test1       0x39            /* GPIO */
 135 #define R3B_Test3       0x3b            /* GPIO */
 136 #define R83_AD_IDH      0x83
 137 #define R91_AD_SLOPEREG 0x91
 138 #define R94_AD_BITCONTROL 0x94
 139
 140 static const u8 eeprom_data[][3] = {
 141 /*      dataH dataM dataL */
 142         {0x01, 0x00, 0x01},
 143         {0x01, 0x80, 0x11},
 144         {0x05, 0x00, 0x14},
 145         {0x05, 0x00, 0x1c},
 146         {0x0d, 0x00, 0x1e},
 147         {0x05, 0x00, 0x1f},
 148         {0x05, 0x05, 0x19},
 149         {0x05, 0x01, 0x1b},
 150         {0x05, 0x09, 0x1e},
 151         {0x0d, 0x89, 0x2e},
 152         {0x05, 0x89, 0x2f},
 153         {0x05, 0x0d, 0xd9},
 154         {0x05, 0x09, 0xf1},
 155 };
 156
 157
 158 /* write 1 byte */
 159 static void reg_w1(struct gspca_dev *gspca_dev,
 160                   __u16 index, __u8 value)
 161 {
 162         gspca_dev->usb_buf[0] = value;
 163         usb_control_msg(gspca_dev->dev,
 164                         usb_sndctrlpipe(gspca_dev->dev, 0),
 165                         0x02,
 166                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 167                         0,      /* value */
 168                         index, gspca_dev->usb_buf, 1, 500);
 169 }
 170
 171 /* write 2 bytes */
 172 static void reg_w2(struct gspca_dev *gspca_dev,
 173                   u16 index, u16 value)
 174 {
 175         gspca_dev->usb_buf[0] = value;
 176         gspca_dev->usb_buf[1] = value >> 8;
 177         usb_control_msg(gspca_dev->dev,
 178                         usb_sndctrlpipe(gspca_dev->dev, 0),
 179                         0x02,
 180                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 181                         0,      /* value */
 182                         index, gspca_dev->usb_buf, 2, 500);
 183 }
 184
 185 static void tv_8532WriteEEprom(struct gspca_dev *gspca_dev)
 186 {
 187         int i;
 188
 189         reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Open);
 190         for (i = 0; i < ARRAY_SIZE(eeprom_data); i++) {
 191                 reg_w1(gspca_dev, R03_TABLE_ADDR, i);
 192                 reg_w1(gspca_dev, R04_WTRAM_DATA_L, eeprom_data[i][2]);
 193                 reg_w1(gspca_dev, R05_WTRAM_DATA_M, eeprom_data[i][1]);
 194                 reg_w1(gspca_dev, R06_WTRAM_DATA_H, eeprom_data[i][0]);
 195                 reg_w1(gspca_dev, R08_RAM_WRITE_ACTION, 0);
 196         }
 197         reg_w1(gspca_dev, R07_TABLE_LEN, i);
 198         reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Close);
 199 }
 200
 201 /* this function is called at probe time */
 202 static int sd_config(struct gspca_dev *gspca_dev,
 203                      const struct usb_device_id *id)
 204 {
 205         struct sd *sd = (struct sd *) gspca_dev;
 206         struct cam *cam;
 207
 208         cam = &gspca_dev->cam;
 209         cam->cam_mode = sif_mode;
 210         cam->nmodes = ARRAY_SIZE(sif_mode);
 211
 212         sd->exposure = EXPOSURE_DEF;
 213         sd->gain = GAIN_DEF;
 214         return 0;
 215 }
 216
 217 static void tv_8532_setReg(struct gspca_dev *gspca_dev)
 218 {
 219         reg_w1(gspca_dev, R3B_Test3, 0x0a);     /* Test0Sel = 10 */
 220         /******************************************************/
 221         reg_w1(gspca_dev, R0E_AD_HEIGHTL, 0x90);
 222         reg_w1(gspca_dev, R0F_AD_HEIGHTH, 0x01);
 223         reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, 0x018f);
 224         reg_w1(gspca_dev, R10_AD_COL_BEGINL, 0x44);
 225                                                 /* begin active line */
 226         reg_w1(gspca_dev, R11_AD_COL_BEGINH, 0x00);
 227                                                 /* mirror and digital gain */
 228         reg_w1(gspca_dev, R14_AD_ROW_BEGINL, 0x0a);
 229
 230         reg_w1(gspca_dev, R94_AD_BITCONTROL, 0x02);
 231         reg_w1(gspca_dev, R91_AD_SLOPEREG, 0x00);
 232         reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
 233                                                 /* = 0x84 */
 234 }
 235
 236 /* this function is called at probe and resume time */
 237 static int sd_init(struct gspca_dev *gspca_dev)
 238 {
 239         tv_8532WriteEEprom(gspca_dev);
 240
 241         return 0;
 242 }
 243
 244 static void setexposure(struct gspca_dev *gspca_dev)
 245 {
 246         struct sd *sd = (struct sd *) gspca_dev;
 247
 248         reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, sd->exposure);
 249         reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
 250                                                 /* 0x84 */
 251 }
 252
 253 static void setgain(struct gspca_dev *gspca_dev)
 254 {
 255         struct sd *sd = (struct sd *) gspca_dev;
 256
 257         reg_w2(gspca_dev, R20_GAIN_G1L, sd->gain);
 258         reg_w2(gspca_dev, R22_GAIN_RL, sd->gain);
 259         reg_w2(gspca_dev, R24_GAIN_BL, sd->gain);
 260         reg_w2(gspca_dev, R26_GAIN_G2L, sd->gain);
 261 }
 262
 263 /* -- start the camera -- */
 264 static int sd_start(struct gspca_dev *gspca_dev)
 265 {
 266         struct sd *sd = (struct sd *) gspca_dev;
 267
 268         reg_w1(gspca_dev, R0C_AD_WIDTHL, 0xe8);         /* 0x20; 0x0c */
 269         reg_w1(gspca_dev, R0D_AD_WIDTHH, 0x03);
 270
 271         /************************************************/
 272         reg_w1(gspca_dev, R28_QUANT, 0x90);
 273                                         /* 0x72 compressed mode 0x28 */
 274         if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
 275                 /* 176x144 */
 276                 reg_w1(gspca_dev, R29_LINE, 0x41);
 277                                         /* CIF - 2 lines/packet */
 278         } else {
 279                 /* 352x288 */
 280                 reg_w1(gspca_dev, R29_LINE, 0x81);
 281                                         /* CIF - 2 lines/packet */
 282         }
 283         /************************************************/
 284         reg_w1(gspca_dev, R2C_POLARITY, 0x10);          /* slow clock */
 285         reg_w1(gspca_dev, R2D_POINT, 0x14);
 286         reg_w1(gspca_dev, R2E_POINTH, 0x01);
 287         reg_w1(gspca_dev, R2F_POINTB, 0x12);
 288         reg_w1(gspca_dev, R30_POINTBH, 0x01);
 289
 290         tv_8532_setReg(gspca_dev);
 291
 292         setexposure(gspca_dev);
 293         setgain(gspca_dev);
 294
 295         /************************************************/
 296         reg_w1(gspca_dev, R31_UPD, 0x01);       /* update registers */
 297         msleep(200);
 298         reg_w1(gspca_dev, R31_UPD, 0x00);       /* end update */
 299
 300         gspca_dev->empty_packet = 0;            /* check the empty packets */
 301         sd->packet = 0;                         /* ignore the first packets */
 302
 303         return 0;
 304 }
 305
 306 static void sd_stopN(struct gspca_dev *gspca_dev)
 307 {
 308         reg_w1(gspca_dev, R3B_Test3, 0x0b);     /* Test0Sel = 11 = GPIO */
 309 }
 310
 311 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 312                         u8 *data,                       /* isoc packet */
 313                         int len)                        /* iso packet length */
 314 {
 315         struct sd *sd = (struct sd *) gspca_dev;
 316         int packet_type0, packet_type1;
 317
 318         packet_type0 = packet_type1 = INTER_PACKET;
 319         if (gspca_dev->empty_packet) {
 320                 gspca_dev->empty_packet = 0;
 321                 sd->packet = gspca_dev->height / 2;
 322                 packet_type0 = FIRST_PACKET;
 323         } else if (sd->packet == 0)
 324                 return;                 /* 2 more lines in 352x288 ! */
 325         sd->packet--;
 326         if (sd->packet == 0)
 327                 packet_type1 = LAST_PACKET;
 328
 329         /* each packet contains:
 330          * - header 2 bytes
 331          * - RGRG line
 332          * - 4 bytes
 333          * - GBGB line
 334          * - 4 bytes
 335          */
 336         gspca_frame_add(gspca_dev, packet_type0,
 337                         data + 2, gspca_dev->width);
 338         gspca_frame_add(gspca_dev, packet_type1,
 339                         data + gspca_dev->width + 5, gspca_dev->width);
 340 }
 341
 342 static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
 343 {
 344         struct sd *sd = (struct sd *) gspca_dev;
 345
 346         sd->exposure = val;
 347         if (gspca_dev->streaming)
 348                 setexposure(gspca_dev);
 349         return 0;
 350 }
 351
 352 static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
 353 {
 354         struct sd *sd = (struct sd *) gspca_dev;
 355
 356         *val = sd->exposure;
 357         return 0;
 358 }
 359
 360 static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
 361 {
 362         struct sd *sd = (struct sd *) gspca_dev;
 363
 364         sd->gain = val;
 365         if (gspca_dev->streaming)
 366                 setgain(gspca_dev);
 367         return 0;
 368 }
 369
 370 static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
 371 {
 372         struct sd *sd = (struct sd *) gspca_dev;
 373
 374         *val = sd->gain;
 375         return 0;
 376 }
 377
 378 /* sub-driver description */
 379 static const struct sd_desc sd_desc = {
 380         .name = MODULE_NAME,
 381         .ctrls = sd_ctrls,
 382         .nctrls = ARRAY_SIZE(sd_ctrls),
 383         .config = sd_config,
 384         .init = sd_init,
 385         .start = sd_start,
 386         .stopN = sd_stopN,
 387         .pkt_scan = sd_pkt_scan,
 388 };
 389
 390 /* -- module initialisation -- */
 391 static const struct usb_device_id device_table[] = {
 392         {USB_DEVICE(0x046d, 0x0920)},
 393         {USB_DEVICE(0x046d, 0x0921)},
 394         {USB_DEVICE(0x0545, 0x808b)},
 395         {USB_DEVICE(0x0545, 0x8333)},
 396         {USB_DEVICE(0x0923, 0x010f)},
 397         {}
 398 };
 399
 400 MODULE_DEVICE_TABLE(usb, device_table);
 401
 402 /* -- device connect -- */
 403 static int sd_probe(struct usb_interface *intf,
 404                     const struct usb_device_id *id)
 405 {
 406         return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
 407                                THIS_MODULE);
 408 }
 409
 410 static struct usb_driver sd_driver = {
 411         .name = MODULE_NAME,
 412         .id_table = device_table,
 413         .probe = sd_probe,
 414         .disconnect = gspca_disconnect,
 415 #ifdef CONFIG_PM
 416         .suspend = gspca_suspend,
 417         .resume = gspca_resume,
 418 #endif
 419 };
 420
 421 /* -- module insert / remove -- */
 422 static int __init sd_mod_init(void)
 423 {
 424         return usb_register(&sd_driver);
 425 }
 426
 427 static void __exit sd_mod_exit(void)
 428 {
 429         usb_deregister(&sd_driver);
 430 }
 431
 432 module_init(sd_mod_init);
 433 module_exit(sd_mod_exit);