LXR linux/drivers/media/usb/gspca/etoms.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Etoms Et61x151 GPL Linux driver by Michel Xhaard (09/09/2004)
   4 *
   5 * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
   6 */
   7
   8#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   9
  10#define MODULE_NAME "etoms"
  11
  12#include "gspca.h"
  13
  14MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
  15MODULE_DESCRIPTION("Etoms USB Camera Driver");
  16MODULE_LICENSE("GPL");
  17
  18/* specific webcam descriptor */
  19struct sd {
  20        struct gspca_dev gspca_dev;     /* !! must be the first item */
  21
  22        unsigned char autogain;
  23
  24        char sensor;
  25#define SENSOR_PAS106 0
  26#define SENSOR_TAS5130CXX 1
  27        signed char ag_cnt;
  28#define AG_CNT_START 13
  29};
  30
  31static const struct v4l2_pix_format vga_mode[] = {
  32        {320, 240, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
  33                .bytesperline = 320,
  34                .sizeimage = 320 * 240,
  35                .colorspace = V4L2_COLORSPACE_SRGB,
  36                .priv = 1},
  37/*      {640, 480, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
  38                .bytesperline = 640,
  39                .sizeimage = 640 * 480,
  40                .colorspace = V4L2_COLORSPACE_SRGB,
  41                .priv = 0}, */
  42};
  43
  44static const struct v4l2_pix_format sif_mode[] = {
  45        {176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
  46                .bytesperline = 176,
  47                .sizeimage = 176 * 144,
  48                .colorspace = V4L2_COLORSPACE_SRGB,
  49                .priv = 1},
  50        {352, 288, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
  51                .bytesperline = 352,
  52                .sizeimage = 352 * 288,
  53                .colorspace = V4L2_COLORSPACE_SRGB,
  54                .priv = 0},
  55};
  56
  57#define ETOMS_ALT_SIZE_1000   12
  58
  59#define ET_GPIO_DIR_CTRL 0x04   /* Control IO bit[0..5] (0 in  1 out) */
  60#define ET_GPIO_OUT 0x05        /* Only IO data */
  61#define ET_GPIO_IN 0x06         /* Read Only IO data */
  62#define ET_RESET_ALL 0x03
  63#define ET_ClCK 0x01
  64#define ET_CTRL 0x02            /* enable i2c OutClck Powerdown mode */
  65
  66#define ET_COMP 0x12            /* Compression register */
  67#define ET_MAXQt 0x13
  68#define ET_MINQt 0x14
  69#define ET_COMP_VAL0 0x02
  70#define ET_COMP_VAL1 0x03
  71
  72#define ET_REG1d 0x1d
  73#define ET_REG1e 0x1e
  74#define ET_REG1f 0x1f
  75#define ET_REG20 0x20
  76#define ET_REG21 0x21
  77#define ET_REG22 0x22
  78#define ET_REG23 0x23
  79#define ET_REG24 0x24
  80#define ET_REG25 0x25
  81/* base registers for luma calculation */
  82#define ET_LUMA_CENTER 0x39
  83
  84#define ET_G_RED 0x4d
  85#define ET_G_GREEN1 0x4e
  86#define ET_G_BLUE 0x4f
  87#define ET_G_GREEN2 0x50
  88#define ET_G_GR_H 0x51
  89#define ET_G_GB_H 0x52
  90
  91#define ET_O_RED 0x34
  92#define ET_O_GREEN1 0x35
  93#define ET_O_BLUE 0x36
  94#define ET_O_GREEN2 0x37
  95
  96#define ET_SYNCHRO 0x68
  97#define ET_STARTX 0x69
  98#define ET_STARTY 0x6a
  99#define ET_WIDTH_LOW 0x6b
 100#define ET_HEIGTH_LOW 0x6c
 101#define ET_W_H_HEIGTH 0x6d
 102
 103#define ET_REG6e 0x6e           /* OBW */
 104#define ET_REG6f 0x6f           /* OBW */
 105#define ET_REG70 0x70           /* OBW_AWB */
 106#define ET_REG71 0x71           /* OBW_AWB */
 107#define ET_REG72 0x72           /* OBW_AWB */
 108#define ET_REG73 0x73           /* Clkdelay ns */
 109#define ET_REG74 0x74           /* test pattern */
 110#define ET_REG75 0x75           /* test pattern */
 111
 112#define ET_I2C_CLK 0x8c
 113#define ET_PXL_CLK 0x60
 114
 115#define ET_I2C_BASE 0x89
 116#define ET_I2C_COUNT 0x8a
 117#define ET_I2C_PREFETCH 0x8b
 118#define ET_I2C_REG 0x88
 119#define ET_I2C_DATA7 0x87
 120#define ET_I2C_DATA6 0x86
 121#define ET_I2C_DATA5 0x85
 122#define ET_I2C_DATA4 0x84
 123#define ET_I2C_DATA3 0x83
 124#define ET_I2C_DATA2 0x82
 125#define ET_I2C_DATA1 0x81
 126#define ET_I2C_DATA0 0x80
 127
 128#define PAS106_REG2 0x02        /* pxlClk = systemClk/(reg2) */
 129#define PAS106_REG3 0x03        /* line/frame H [11..4] */
 130#define PAS106_REG4 0x04        /* line/frame L [3..0] */
 131#define PAS106_REG5 0x05        /* exposure time line offset(default 5) */
 132#define PAS106_REG6 0x06        /* exposure time pixel offset(default 6) */
 133#define PAS106_REG7 0x07        /* signbit Dac (default 0) */
 134#define PAS106_REG9 0x09
 135#define PAS106_REG0e 0x0e       /* global gain [4..0](default 0x0e) */
 136#define PAS106_REG13 0x13       /* end i2c write */
 137
 138static const __u8 GainRGBG[] = { 0x80, 0x80, 0x80, 0x80, 0x00, 0x00 };
 139
 140static const __u8 I2c2[] = { 0x08, 0x08, 0x08, 0x08, 0x0d };
 141
 142static const __u8 I2c3[] = { 0x12, 0x05 };
 143
 144static const __u8 I2c4[] = { 0x41, 0x08 };
 145
 146/* read 'len' bytes to gspca_dev->usb_buf */
 147static void reg_r(struct gspca_dev *gspca_dev,
 148                  __u16 index,
 149                  __u16 len)
 150{
 151        struct usb_device *dev = gspca_dev->dev;
 152
 153        if (len > USB_BUF_SZ) {
 154                gspca_err(gspca_dev, "reg_r: buffer overflow\n");
 155                return;
 156        }
 157
 158        usb_control_msg(dev,
 159                        usb_rcvctrlpipe(dev, 0),
 160                        0,
 161                        USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
 162                        0,
 163                        index, gspca_dev->usb_buf, len, 500);
 164        gspca_dbg(gspca_dev, D_USBI, "reg read [%02x] -> %02x ..\n",
 165                  index, gspca_dev->usb_buf[0]);
 166}
 167
 168static void reg_w_val(struct gspca_dev *gspca_dev,
 169                        __u16 index,
 170                        __u8 val)
 171{
 172        struct usb_device *dev = gspca_dev->dev;
 173
 174        gspca_dev->usb_buf[0] = val;
 175        usb_control_msg(dev,
 176                        usb_sndctrlpipe(dev, 0),
 177                        0,
 178                        USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
 179                        0,
 180                        index, gspca_dev->usb_buf, 1, 500);
 181}
 182
 183static void reg_w(struct gspca_dev *gspca_dev,
 184                  __u16 index,
 185                  const __u8 *buffer,
 186                  __u16 len)
 187{
 188        struct usb_device *dev = gspca_dev->dev;
 189
 190        if (len > USB_BUF_SZ) {
 191                pr_err("reg_w: buffer overflow\n");
 192                return;
 193        }
 194        gspca_dbg(gspca_dev, D_USBO, "reg write [%02x] = %02x..\n",
 195                  index, *buffer);
 196
 197        memcpy(gspca_dev->usb_buf, buffer, len);
 198        usb_control_msg(dev,
 199                        usb_sndctrlpipe(dev, 0),
 200                        0,
 201                        USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
 202                        0, index, gspca_dev->usb_buf, len, 500);
 203}
 204
 205static int i2c_w(struct gspca_dev *gspca_dev,
 206                 __u8 reg,
 207                 const __u8 *buffer,
 208                 int len, __u8 mode)
 209{
 210        /* buffer should be [D0..D7] */
 211        __u8 ptchcount;
 212
 213        /* set the base address */
 214        reg_w_val(gspca_dev, ET_I2C_BASE, 0x40);
 215                                         /* sensor base for the pas106 */
 216        /* set count and prefetch */
 217        ptchcount = ((len & 0x07) << 4) | (mode & 0x03);
 218        reg_w_val(gspca_dev, ET_I2C_COUNT, ptchcount);
 219        /* set the register base */
 220        reg_w_val(gspca_dev, ET_I2C_REG, reg);
 221        while (--len >= 0)
 222                reg_w_val(gspca_dev, ET_I2C_DATA0 + len, buffer[len]);
 223        return 0;
 224}
 225
 226static int i2c_r(struct gspca_dev *gspca_dev,
 227                        __u8 reg)
 228{
 229        /* set the base address */
 230        reg_w_val(gspca_dev, ET_I2C_BASE, 0x40);
 231                                        /* sensor base for the pas106 */
 232        /* set count and prefetch (cnd: 4 bits - mode: 4 bits) */
 233        reg_w_val(gspca_dev, ET_I2C_COUNT, 0x11);
 234        reg_w_val(gspca_dev, ET_I2C_REG, reg);  /* set the register base */
 235        reg_w_val(gspca_dev, ET_I2C_PREFETCH, 0x02);    /* prefetch */
 236        reg_w_val(gspca_dev, ET_I2C_PREFETCH, 0x00);
 237        reg_r(gspca_dev, ET_I2C_DATA0, 1);      /* read one byte */
 238        return 0;
 239}
 240
 241static int Et_WaitStatus(struct gspca_dev *gspca_dev)
 242{
 243        int retry = 10;
 244
 245        while (retry--) {
 246                reg_r(gspca_dev, ET_ClCK, 1);
 247                if (gspca_dev->usb_buf[0] != 0)
 248                        return 1;
 249        }
 250        return 0;
 251}
 252
 253static int et_video(struct gspca_dev *gspca_dev,
 254                    int on)
 255{
 256        int ret;
 257
 258        reg_w_val(gspca_dev, ET_GPIO_OUT,
 259                  on ? 0x10             /* startvideo - set Bit5 */
 260                     : 0);              /* stopvideo */
 261        ret = Et_WaitStatus(gspca_dev);
 262        if (ret != 0)
 263                gspca_err(gspca_dev, "timeout video on/off\n");
 264        return ret;
 265}
 266
 267static void Et_init2(struct gspca_dev *gspca_dev)
 268{
 269        __u8 value;
 270        static const __u8 FormLine[] = { 0x84, 0x03, 0x14, 0xf4, 0x01, 0x05 };
 271
 272        gspca_dbg(gspca_dev, D_STREAM, "Open Init2 ET\n");
 273        reg_w_val(gspca_dev, ET_GPIO_DIR_CTRL, 0x2f);
 274        reg_w_val(gspca_dev, ET_GPIO_OUT, 0x10);
 275        reg_r(gspca_dev, ET_GPIO_IN, 1);
 276        reg_w_val(gspca_dev, ET_ClCK, 0x14); /* 0x14 // 0x16 enabled pattern */
 277        reg_w_val(gspca_dev, ET_CTRL, 0x1b);
 278
 279        /*  compression et subsampling */
 280        if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv)
 281                value = ET_COMP_VAL1;   /* 320 */
 282        else
 283                value = ET_COMP_VAL0;   /* 640 */
 284        reg_w_val(gspca_dev, ET_COMP, value);
 285        reg_w_val(gspca_dev, ET_MAXQt, 0x1f);
 286        reg_w_val(gspca_dev, ET_MINQt, 0x04);
 287        /* undocumented registers */
 288        reg_w_val(gspca_dev, ET_REG1d, 0xff);
 289        reg_w_val(gspca_dev, ET_REG1e, 0xff);
 290        reg_w_val(gspca_dev, ET_REG1f, 0xff);
 291        reg_w_val(gspca_dev, ET_REG20, 0x35);
 292        reg_w_val(gspca_dev, ET_REG21, 0x01);
 293        reg_w_val(gspca_dev, ET_REG22, 0x00);
 294        reg_w_val(gspca_dev, ET_REG23, 0xff);
 295        reg_w_val(gspca_dev, ET_REG24, 0xff);
 296        reg_w_val(gspca_dev, ET_REG25, 0x0f);
 297        /* colors setting */
 298        reg_w_val(gspca_dev, 0x30, 0x11);               /* 0x30 */
 299        reg_w_val(gspca_dev, 0x31, 0x40);
 300        reg_w_val(gspca_dev, 0x32, 0x00);
 301        reg_w_val(gspca_dev, ET_O_RED, 0x00);           /* 0x34 */
 302        reg_w_val(gspca_dev, ET_O_GREEN1, 0x00);
 303        reg_w_val(gspca_dev, ET_O_BLUE, 0x00);
 304        reg_w_val(gspca_dev, ET_O_GREEN2, 0x00);
 305        /*************/
 306        reg_w_val(gspca_dev, ET_G_RED, 0x80);           /* 0x4d */
 307        reg_w_val(gspca_dev, ET_G_GREEN1, 0x80);
 308        reg_w_val(gspca_dev, ET_G_BLUE, 0x80);
 309        reg_w_val(gspca_dev, ET_G_GREEN2, 0x80);
 310        reg_w_val(gspca_dev, ET_G_GR_H, 0x00);
 311        reg_w_val(gspca_dev, ET_G_GB_H, 0x00);          /* 0x52 */
 312        /* Window control registers */
 313        reg_w_val(gspca_dev, 0x61, 0x80);               /* use cmc_out */
 314        reg_w_val(gspca_dev, 0x62, 0x02);
 315        reg_w_val(gspca_dev, 0x63, 0x03);
 316        reg_w_val(gspca_dev, 0x64, 0x14);
 317        reg_w_val(gspca_dev, 0x65, 0x0e);
 318        reg_w_val(gspca_dev, 0x66, 0x02);
 319        reg_w_val(gspca_dev, 0x67, 0x02);
 320
 321        /**************************************/
 322        reg_w_val(gspca_dev, ET_SYNCHRO, 0x8f);         /* 0x68 */
 323        reg_w_val(gspca_dev, ET_STARTX, 0x69);          /* 0x6a //0x69 */
 324        reg_w_val(gspca_dev, ET_STARTY, 0x0d);          /* 0x0d //0x0c */
 325        reg_w_val(gspca_dev, ET_WIDTH_LOW, 0x80);
 326        reg_w_val(gspca_dev, ET_HEIGTH_LOW, 0xe0);
 327        reg_w_val(gspca_dev, ET_W_H_HEIGTH, 0x60);      /* 6d */
 328        reg_w_val(gspca_dev, ET_REG6e, 0x86);
 329        reg_w_val(gspca_dev, ET_REG6f, 0x01);
 330        reg_w_val(gspca_dev, ET_REG70, 0x26);
 331        reg_w_val(gspca_dev, ET_REG71, 0x7a);
 332        reg_w_val(gspca_dev, ET_REG72, 0x01);
 333        /* Clock Pattern registers ***************** */
 334        reg_w_val(gspca_dev, ET_REG73, 0x00);
 335        reg_w_val(gspca_dev, ET_REG74, 0x18);           /* 0x28 */
 336        reg_w_val(gspca_dev, ET_REG75, 0x0f);           /* 0x01 */
 337        /**********************************************/
 338        reg_w_val(gspca_dev, 0x8a, 0x20);
 339        reg_w_val(gspca_dev, 0x8d, 0x0f);
 340        reg_w_val(gspca_dev, 0x8e, 0x08);
 341        /**************************************/
 342        reg_w_val(gspca_dev, 0x03, 0x08);
 343        reg_w_val(gspca_dev, ET_PXL_CLK, 0x03);
 344        reg_w_val(gspca_dev, 0x81, 0xff);
 345        reg_w_val(gspca_dev, 0x80, 0x00);
 346        reg_w_val(gspca_dev, 0x81, 0xff);
 347        reg_w_val(gspca_dev, 0x80, 0x20);
 348        reg_w_val(gspca_dev, 0x03, 0x01);
 349        reg_w_val(gspca_dev, 0x03, 0x00);
 350        reg_w_val(gspca_dev, 0x03, 0x08);
 351        /********************************************/
 352
 353/*      reg_r(gspca_dev, ET_I2C_BASE, 1);
 354                                         always 0x40 as the pas106 ??? */
 355        /* set the sensor */
 356        if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv)
 357                value = 0x04;           /* 320 */
 358        else                            /* 640 */
 359                value = 0x1e;   /* 0x17  * setting PixelClock
 360                                         * 0x03 mean 24/(3+1) = 6 Mhz
 361                                         * 0x05 -> 24/(5+1) = 4 Mhz
 362                                         * 0x0b -> 24/(11+1) = 2 Mhz
 363                                         * 0x17 -> 24/(23+1) = 1 Mhz
 364                                         */
 365        reg_w_val(gspca_dev, ET_PXL_CLK, value);
 366        /* now set by fifo the FormatLine setting */
 367        reg_w(gspca_dev, 0x62, FormLine, 6);
 368
 369        /* set exposure times [ 0..0x78] 0->longvalue 0x78->shortvalue */
 370        reg_w_val(gspca_dev, 0x81, 0x47);       /* 0x47; */
 371        reg_w_val(gspca_dev, 0x80, 0x40);       /* 0x40; */
 372        /* Pedro change */
 373        /* Brightness change Brith+ decrease value */
 374        /* Brigth- increase value */
 375        /* original value = 0x70; */
 376        reg_w_val(gspca_dev, 0x81, 0x30);       /* 0x20; - set brightness */
 377        reg_w_val(gspca_dev, 0x80, 0x20);       /* 0x20; */
 378}
 379
 380static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
 381{
 382        int i;
 383
 384        for (i = 0; i < 4; i++)
 385                reg_w_val(gspca_dev, ET_O_RED + i, val);
 386}
 387
 388static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
 389{
 390        __u8 RGBG[] = { 0x80, 0x80, 0x80, 0x80, 0x00, 0x00 };
 391
 392        memset(RGBG, val, sizeof(RGBG) - 2);
 393        reg_w(gspca_dev, ET_G_RED, RGBG, 6);
 394}
 395
 396static void setcolors(struct gspca_dev *gspca_dev, s32 val)
 397{
 398        struct sd *sd = (struct sd *) gspca_dev;
 399        __u8 I2cc[] = { 0x05, 0x02, 0x02, 0x05, 0x0d };
 400        __u8 i2cflags = 0x01;
 401        /* __u8 green = 0; */
 402
 403        I2cc[3] = val;  /* red */
 404        I2cc[0] = 15 - val;     /* blue */
 405        /* green = 15 - ((((7*I2cc[0]) >> 2 ) + I2cc[3]) >> 1); */
 406        /* I2cc[1] = I2cc[2] = green; */
 407        if (sd->sensor == SENSOR_PAS106) {
 408                i2c_w(gspca_dev, PAS106_REG13, &i2cflags, 1, 3);
 409                i2c_w(gspca_dev, PAS106_REG9, I2cc, sizeof I2cc, 1);
 410        }
 411}
 412
 413static s32 getcolors(struct gspca_dev *gspca_dev)
 414{
 415        struct sd *sd = (struct sd *) gspca_dev;
 416
 417        if (sd->sensor == SENSOR_PAS106) {
 418/*              i2c_r(gspca_dev, PAS106_REG9);           * blue */
 419                i2c_r(gspca_dev, PAS106_REG9 + 3);      /* red */
 420                return gspca_dev->usb_buf[0] & 0x0f;
 421        }
 422        return 0;
 423}
 424
 425static void setautogain(struct gspca_dev *gspca_dev)
 426{
 427        struct sd *sd = (struct sd *) gspca_dev;
 428
 429        if (sd->autogain)
 430                sd->ag_cnt = AG_CNT_START;
 431        else
 432                sd->ag_cnt = -1;
 433}
 434
 435static void Et_init1(struct gspca_dev *gspca_dev)
 436{
 437        __u8 value;
 438/*      __u8 I2c0 [] = {0x0a, 0x12, 0x05, 0x22, 0xac, 0x00, 0x01, 0x00}; */
 439        __u8 I2c0[] = { 0x0a, 0x12, 0x05, 0x6d, 0xcd, 0x00, 0x01, 0x00 };
 440                                                /* try 1/120 0x6d 0xcd 0x40 */
 441/*      __u8 I2c0 [] = {0x0a, 0x12, 0x05, 0xfe, 0xfe, 0xc0, 0x01, 0x00};
 442                                                 * 1/60000 hmm ?? */
 443
 444        gspca_dbg(gspca_dev, D_STREAM, "Open Init1 ET\n\n");
 445        reg_w_val(gspca_dev, ET_GPIO_DIR_CTRL, 7);
 446        reg_r(gspca_dev, ET_GPIO_IN, 1);
 447        reg_w_val(gspca_dev, ET_RESET_ALL, 1);
 448        reg_w_val(gspca_dev, ET_RESET_ALL, 0);
 449        reg_w_val(gspca_dev, ET_ClCK, 0x10);
 450        reg_w_val(gspca_dev, ET_CTRL, 0x19);
 451        /*   compression et subsampling */
 452        if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv)
 453                value = ET_COMP_VAL1;
 454        else
 455                value = ET_COMP_VAL0;
 456        gspca_dbg(gspca_dev, D_STREAM, "Open mode %d Compression %d\n",
 457                  gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv,
 458                  value);
 459        reg_w_val(gspca_dev, ET_COMP, value);
 460        reg_w_val(gspca_dev, ET_MAXQt, 0x1d);
 461        reg_w_val(gspca_dev, ET_MINQt, 0x02);
 462        /* undocumented registers */
 463        reg_w_val(gspca_dev, ET_REG1d, 0xff);
 464        reg_w_val(gspca_dev, ET_REG1e, 0xff);
 465        reg_w_val(gspca_dev, ET_REG1f, 0xff);
 466        reg_w_val(gspca_dev, ET_REG20, 0x35);
 467        reg_w_val(gspca_dev, ET_REG21, 0x01);
 468        reg_w_val(gspca_dev, ET_REG22, 0x00);
 469        reg_w_val(gspca_dev, ET_REG23, 0xf7);
 470        reg_w_val(gspca_dev, ET_REG24, 0xff);
 471        reg_w_val(gspca_dev, ET_REG25, 0x07);
 472        /* colors setting */
 473        reg_w_val(gspca_dev, ET_G_RED, 0x80);
 474        reg_w_val(gspca_dev, ET_G_GREEN1, 0x80);
 475        reg_w_val(gspca_dev, ET_G_BLUE, 0x80);
 476        reg_w_val(gspca_dev, ET_G_GREEN2, 0x80);
 477        reg_w_val(gspca_dev, ET_G_GR_H, 0x00);
 478        reg_w_val(gspca_dev, ET_G_GB_H, 0x00);
 479        /* Window control registers */
 480        reg_w_val(gspca_dev, ET_SYNCHRO, 0xf0);
 481        reg_w_val(gspca_dev, ET_STARTX, 0x56);          /* 0x56 */
 482        reg_w_val(gspca_dev, ET_STARTY, 0x05);          /* 0x04 */
 483        reg_w_val(gspca_dev, ET_WIDTH_LOW, 0x60);
 484        reg_w_val(gspca_dev, ET_HEIGTH_LOW, 0x20);
 485        reg_w_val(gspca_dev, ET_W_H_HEIGTH, 0x50);
 486        reg_w_val(gspca_dev, ET_REG6e, 0x86);
 487        reg_w_val(gspca_dev, ET_REG6f, 0x01);
 488        reg_w_val(gspca_dev, ET_REG70, 0x86);
 489        reg_w_val(gspca_dev, ET_REG71, 0x14);
 490        reg_w_val(gspca_dev, ET_REG72, 0x00);
 491        /* Clock Pattern registers */
 492        reg_w_val(gspca_dev, ET_REG73, 0x00);
 493        reg_w_val(gspca_dev, ET_REG74, 0x00);
 494        reg_w_val(gspca_dev, ET_REG75, 0x0a);
 495        reg_w_val(gspca_dev, ET_I2C_CLK, 0x04);
 496        reg_w_val(gspca_dev, ET_PXL_CLK, 0x01);
 497        /* set the sensor */
 498        if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
 499                I2c0[0] = 0x06;
 500                i2c_w(gspca_dev, PAS106_REG2, I2c0, sizeof I2c0, 1);
 501                i2c_w(gspca_dev, PAS106_REG9, I2c2, sizeof I2c2, 1);
 502                value = 0x06;
 503                i2c_w(gspca_dev, PAS106_REG2, &value, 1, 1);
 504                i2c_w(gspca_dev, PAS106_REG3, I2c3, sizeof I2c3, 1);
 505                /* value = 0x1f; */
 506                value = 0x04;
 507                i2c_w(gspca_dev, PAS106_REG0e, &value, 1, 1);
 508        } else {
 509                I2c0[0] = 0x0a;
 510
 511                i2c_w(gspca_dev, PAS106_REG2, I2c0, sizeof I2c0, 1);
 512                i2c_w(gspca_dev, PAS106_REG9, I2c2, sizeof I2c2, 1);
 513                value = 0x0a;
 514                i2c_w(gspca_dev, PAS106_REG2, &value, 1, 1);
 515                i2c_w(gspca_dev, PAS106_REG3, I2c3, sizeof I2c3, 1);
 516                value = 0x04;
 517                /* value = 0x10; */
 518                i2c_w(gspca_dev, PAS106_REG0e, &value, 1, 1);
 519                /* bit 2 enable bit 1:2 select 0 1 2 3
 520                   value = 0x07;                                * curve 0 *
 521                   i2c_w(gspca_dev, PAS106_REG0f, &value, 1, 1);
 522                 */
 523        }
 524
 525/*      value = 0x01; */
 526/*      value = 0x22; */
 527/*      i2c_w(gspca_dev, PAS106_REG5, &value, 1, 1); */
 528        /* magnetude and sign bit for DAC */
 529        i2c_w(gspca_dev, PAS106_REG7, I2c4, sizeof I2c4, 1);
 530        /* now set by fifo the whole colors setting */
 531        reg_w(gspca_dev, ET_G_RED, GainRGBG, 6);
 532        setcolors(gspca_dev, getcolors(gspca_dev));
 533}
 534
 535/* this function is called at probe time */
 536static int sd_config(struct gspca_dev *gspca_dev,
 537                     const struct usb_device_id *id)
 538{
 539        struct sd *sd = (struct sd *) gspca_dev;
 540        struct cam *cam;
 541
 542        cam = &gspca_dev->cam;
 543        sd->sensor = id->driver_info;
 544        if (sd->sensor == SENSOR_PAS106) {
 545                cam->cam_mode = sif_mode;
 546                cam->nmodes = ARRAY_SIZE(sif_mode);
 547        } else {
 548                cam->cam_mode = vga_mode;
 549                cam->nmodes = ARRAY_SIZE(vga_mode);
 550        }
 551        sd->ag_cnt = -1;
 552        return 0;
 553}
 554
 555/* this function is called at probe and resume time */
 556static int sd_init(struct gspca_dev *gspca_dev)
 557{
 558        struct sd *sd = (struct sd *) gspca_dev;
 559
 560        if (sd->sensor == SENSOR_PAS106)
 561                Et_init1(gspca_dev);
 562        else
 563                Et_init2(gspca_dev);
 564        reg_w_val(gspca_dev, ET_RESET_ALL, 0x08);
 565        et_video(gspca_dev, 0);         /* video off */
 566        return 0;
 567}
 568
 569/* -- start the camera -- */
 570static int sd_start(struct gspca_dev *gspca_dev)
 571{
 572        struct sd *sd = (struct sd *) gspca_dev;
 573
 574        if (sd->sensor == SENSOR_PAS106)
 575                Et_init1(gspca_dev);
 576        else
 577                Et_init2(gspca_dev);
 578
 579        setautogain(gspca_dev);
 580
 581        reg_w_val(gspca_dev, ET_RESET_ALL, 0x08);
 582        et_video(gspca_dev, 1);         /* video on */
 583        return 0;
 584}
 585
 586static void sd_stopN(struct gspca_dev *gspca_dev)
 587{
 588        et_video(gspca_dev, 0);         /* video off */
 589}
 590
 591static __u8 Et_getgainG(struct gspca_dev *gspca_dev)
 592{
 593        struct sd *sd = (struct sd *) gspca_dev;
 594
 595        if (sd->sensor == SENSOR_PAS106) {
 596                i2c_r(gspca_dev, PAS106_REG0e);
 597                gspca_dbg(gspca_dev, D_CONF, "Etoms gain G %d\n",
 598                          gspca_dev->usb_buf[0]);
 599                return gspca_dev->usb_buf[0];
 600        }
 601        return 0x1f;
 602}
 603
 604static void Et_setgainG(struct gspca_dev *gspca_dev, __u8 gain)
 605{
 606        struct sd *sd = (struct sd *) gspca_dev;
 607
 608        if (sd->sensor == SENSOR_PAS106) {
 609                __u8 i2cflags = 0x01;
 610
 611                i2c_w(gspca_dev, PAS106_REG13, &i2cflags, 1, 3);
 612                i2c_w(gspca_dev, PAS106_REG0e, &gain, 1, 1);
 613        }
 614}
 615
 616#define BLIMIT(bright) \
 617        (u8)((bright > 0x1f) ? 0x1f : ((bright < 4) ? 3 : bright))
 618#define LIMIT(color) \
 619        (u8)((color > 0xff) ? 0xff : ((color < 0) ? 0 : color))
 620
 621static void do_autogain(struct gspca_dev *gspca_dev)
 622{
 623        struct sd *sd = (struct sd *) gspca_dev;
 624        __u8 luma;
 625        __u8 luma_mean = 128;
 626        __u8 luma_delta = 20;
 627        __u8 spring = 4;
 628        int Gbright;
 629        __u8 r, g, b;
 630
 631        if (sd->ag_cnt < 0)
 632                return;
 633        if (--sd->ag_cnt >= 0)
 634                return;
 635        sd->ag_cnt = AG_CNT_START;
 636
 637        Gbright = Et_getgainG(gspca_dev);
 638        reg_r(gspca_dev, ET_LUMA_CENTER, 4);
 639        g = (gspca_dev->usb_buf[0] + gspca_dev->usb_buf[3]) >> 1;
 640        r = gspca_dev->usb_buf[1];
 641        b = gspca_dev->usb_buf[2];
 642        r = ((r << 8) - (r << 4) - (r << 3)) >> 10;
 643        b = ((b << 7) >> 10);
 644        g = ((g << 9) + (g << 7) + (g << 5)) >> 10;
 645        luma = LIMIT(r + g + b);
 646        gspca_dbg(gspca_dev, D_FRAM, "Etoms luma G %d\n", luma);
 647        if (luma < luma_mean - luma_delta || luma > luma_mean + luma_delta) {
 648                Gbright += (luma_mean - luma) >> spring;
 649                Gbright = BLIMIT(Gbright);
 650                gspca_dbg(gspca_dev, D_FRAM, "Etoms Gbright %d\n", Gbright);
 651                Et_setgainG(gspca_dev, (__u8) Gbright);
 652        }
 653}
 654
 655#undef BLIMIT
 656#undef LIMIT
 657
 658static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 659                        u8 *data,                       /* isoc packet */
 660                        int len)                        /* iso packet length */
 661{
 662        int seqframe;
 663
 664        seqframe = data[0] & 0x3f;
 665        len = (int) (((data[0] & 0xc0) << 2) | data[1]);
 666        if (seqframe == 0x3f) {
 667                gspca_dbg(gspca_dev, D_FRAM,
 668                          "header packet found datalength %d !!\n", len);
 669                gspca_dbg(gspca_dev, D_FRAM, "G %d R %d G %d B %d",
 670                          data[2], data[3], data[4], data[5]);
 671                data += 30;
 672                /* don't change datalength as the chips provided it */
 673                gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
 674                gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
 675                return;
 676        }
 677        if (len) {
 678                data += 8;
 679                gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
 680        } else {                        /* Drop Packet */
 681                gspca_dev->last_packet_type = DISCARD_PACKET;
 682        }
 683}
 684
 685static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
 686{
 687        struct gspca_dev *gspca_dev =
 688                container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
 689        struct sd *sd = (struct sd *)gspca_dev;
 690
 691        gspca_dev->usb_err = 0;
 692
 693        if (!gspca_dev->streaming)
 694                return 0;
 695
 696        switch (ctrl->id) {
 697        case V4L2_CID_BRIGHTNESS:
 698                setbrightness(gspca_dev, ctrl->val);
 699                break;
 700        case V4L2_CID_CONTRAST:
 701                setcontrast(gspca_dev, ctrl->val);
 702                break;
 703        case V4L2_CID_SATURATION:
 704                setcolors(gspca_dev, ctrl->val);
 705                break;
 706        case V4L2_CID_AUTOGAIN:
 707                sd->autogain = ctrl->val;
 708                setautogain(gspca_dev);
 709                break;
 710        }
 711        return gspca_dev->usb_err;
 712}
 713
 714static const struct v4l2_ctrl_ops sd_ctrl_ops = {
 715        .s_ctrl = sd_s_ctrl,
 716};
 717
 718static int sd_init_controls(struct gspca_dev *gspca_dev)
 719{
 720        struct sd *sd = (struct sd *)gspca_dev;
 721        struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
 722
 723        gspca_dev->vdev.ctrl_handler = hdl;
 724        v4l2_ctrl_handler_init(hdl, 4);
 725        v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
 726                        V4L2_CID_BRIGHTNESS, 1, 127, 1, 63);
 727        v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
 728                        V4L2_CID_CONTRAST, 0, 255, 1, 127);
 729        if (sd->sensor == SENSOR_PAS106)
 730                v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
 731                        V4L2_CID_SATURATION, 0, 15, 1, 7);
 732        v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
 733                        V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
 734        if (hdl->error) {
 735                pr_err("Could not initialize controls\n");
 736                return hdl->error;
 737        }
 738        return 0;
 739}
 740
 741/* sub-driver description */
 742static const struct sd_desc sd_desc = {
 743        .name = MODULE_NAME,
 744        .config = sd_config,
 745        .init = sd_init,
 746        .init_controls = sd_init_controls,
 747        .start = sd_start,
 748        .stopN = sd_stopN,
 749        .pkt_scan = sd_pkt_scan,
 750        .dq_callback = do_autogain,
 751};
 752
 753/* -- module initialisation -- */
 754static const struct usb_device_id device_table[] = {
 755        {USB_DEVICE(0x102c, 0x6151), .driver_info = SENSOR_PAS106},
 756        {USB_DEVICE(0x102c, 0x6251), .driver_info = SENSOR_TAS5130CXX},
 757        {}
 758};
 759
 760MODULE_DEVICE_TABLE(usb, device_table);
 761
 762/* -- device connect -- */
 763static int sd_probe(struct usb_interface *intf,
 764                    const struct usb_device_id *id)
 765{
 766        return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
 767                               THIS_MODULE);
 768}
 769
 770static struct usb_driver sd_driver = {
 771        .name = MODULE_NAME,
 772        .id_table = device_table,
 773        .probe = sd_probe,
 774        .disconnect = gspca_disconnect,
 775#ifdef CONFIG_PM
 776        .suspend = gspca_suspend,
 777        .resume = gspca_resume,
 778        .reset_resume = gspca_resume,
 779#endif
 780};
 781
 782module_usb_driver(sd_driver);
 783