linux/drivers/media/usb/gspca/mars.c
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   1/*
   2 *              Mars-Semi MR97311A library
   3 *              Copyright (C) 2005 <bradlch@hotmail.com>
   4 *
   5 * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation; either version 2 of the License, or
  10 * any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 * GNU General Public License for more details.
  16 */
  17
  18#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  19
  20#define MODULE_NAME "mars"
  21
  22#include "gspca.h"
  23#include "jpeg.h"
  24
  25MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
  26MODULE_DESCRIPTION("GSPCA/Mars USB Camera Driver");
  27MODULE_LICENSE("GPL");
  28
  29#define QUALITY 50
  30
  31/* specific webcam descriptor */
  32struct sd {
  33        struct gspca_dev gspca_dev;     /* !! must be the first item */
  34
  35        struct v4l2_ctrl *brightness;
  36        struct v4l2_ctrl *saturation;
  37        struct v4l2_ctrl *sharpness;
  38        struct v4l2_ctrl *gamma;
  39        struct { /* illuminator control cluster */
  40                struct v4l2_ctrl *illum_top;
  41                struct v4l2_ctrl *illum_bottom;
  42        };
  43        u8 jpeg_hdr[JPEG_HDR_SZ];
  44};
  45
  46/* V4L2 controls supported by the driver */
  47static void setbrightness(struct gspca_dev *gspca_dev, s32 val);
  48static void setcolors(struct gspca_dev *gspca_dev, s32 val);
  49static void setgamma(struct gspca_dev *gspca_dev, s32 val);
  50static void setsharpness(struct gspca_dev *gspca_dev, s32 val);
  51
  52static const struct v4l2_pix_format vga_mode[] = {
  53        {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
  54                .bytesperline = 320,
  55                .sizeimage = 320 * 240 * 3 / 8 + 590,
  56                .colorspace = V4L2_COLORSPACE_JPEG,
  57                .priv = 2},
  58        {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
  59                .bytesperline = 640,
  60                .sizeimage = 640 * 480 * 3 / 8 + 590,
  61                .colorspace = V4L2_COLORSPACE_JPEG,
  62                .priv = 1},
  63};
  64
  65static const __u8 mi_data[0x20] = {
  66/*       01    02   03     04    05    06    07    08 */
  67        0x48, 0x22, 0x01, 0x47, 0x10, 0x00, 0x00, 0x00,
  68/*       09    0a   0b     0c    0d    0e    0f    10 */
  69        0x00, 0x01, 0x30, 0x01, 0x30, 0x01, 0x30, 0x01,
  70/*       11    12   13     14    15    16    17    18 */
  71        0x30, 0x00, 0x04, 0x00, 0x06, 0x01, 0xe2, 0x02,
  72/*       19    1a   1b     1c    1d    1e    1f    20 */
  73        0x82, 0x00, 0x20, 0x17, 0x80, 0x08, 0x0c, 0x00
  74};
  75
  76/* write <len> bytes from gspca_dev->usb_buf */
  77static void reg_w(struct gspca_dev *gspca_dev,
  78                 int len)
  79{
  80        int alen, ret;
  81
  82        if (gspca_dev->usb_err < 0)
  83                return;
  84
  85        ret = usb_bulk_msg(gspca_dev->dev,
  86                        usb_sndbulkpipe(gspca_dev->dev, 4),
  87                        gspca_dev->usb_buf,
  88                        len,
  89                        &alen,
  90                        500);   /* timeout in milliseconds */
  91        if (ret < 0) {
  92                pr_err("reg write [%02x] error %d\n",
  93                       gspca_dev->usb_buf[0], ret);
  94                gspca_dev->usb_err = ret;
  95        }
  96}
  97
  98static void mi_w(struct gspca_dev *gspca_dev,
  99                 u8 addr,
 100                 u8 value)
 101{
 102        gspca_dev->usb_buf[0] = 0x1f;
 103        gspca_dev->usb_buf[1] = 0;                      /* control byte */
 104        gspca_dev->usb_buf[2] = addr;
 105        gspca_dev->usb_buf[3] = value;
 106
 107        reg_w(gspca_dev, 4);
 108}
 109
 110static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
 111{
 112        gspca_dev->usb_buf[0] = 0x61;
 113        gspca_dev->usb_buf[1] = val;
 114        reg_w(gspca_dev, 2);
 115}
 116
 117static void setcolors(struct gspca_dev *gspca_dev, s32 val)
 118{
 119        gspca_dev->usb_buf[0] = 0x5f;
 120        gspca_dev->usb_buf[1] = val << 3;
 121        gspca_dev->usb_buf[2] = ((val >> 2) & 0xf8) | 0x04;
 122        reg_w(gspca_dev, 3);
 123}
 124
 125static void setgamma(struct gspca_dev *gspca_dev, s32 val)
 126{
 127        gspca_dev->usb_buf[0] = 0x06;
 128        gspca_dev->usb_buf[1] = val * 0x40;
 129        reg_w(gspca_dev, 2);
 130}
 131
 132static void setsharpness(struct gspca_dev *gspca_dev, s32 val)
 133{
 134        gspca_dev->usb_buf[0] = 0x67;
 135        gspca_dev->usb_buf[1] = val * 4 + 3;
 136        reg_w(gspca_dev, 2);
 137}
 138
 139static void setilluminators(struct gspca_dev *gspca_dev, bool top, bool bottom)
 140{
 141        /* both are off if not streaming */
 142        gspca_dev->usb_buf[0] = 0x22;
 143        if (top)
 144                gspca_dev->usb_buf[1] = 0x76;
 145        else if (bottom)
 146                gspca_dev->usb_buf[1] = 0x7a;
 147        else
 148                gspca_dev->usb_buf[1] = 0x7e;
 149        reg_w(gspca_dev, 2);
 150}
 151
 152static int mars_s_ctrl(struct v4l2_ctrl *ctrl)
 153{
 154        struct gspca_dev *gspca_dev =
 155                container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
 156        struct sd *sd = (struct sd *)gspca_dev;
 157
 158        gspca_dev->usb_err = 0;
 159
 160        if (ctrl->id == V4L2_CID_ILLUMINATORS_1) {
 161                /* only one can be on at a time */
 162                if (ctrl->is_new && ctrl->val)
 163                        sd->illum_bottom->val = 0;
 164                if (sd->illum_bottom->is_new && sd->illum_bottom->val)
 165                        sd->illum_top->val = 0;
 166        }
 167
 168        if (!gspca_dev->streaming)
 169                return 0;
 170
 171        switch (ctrl->id) {
 172        case V4L2_CID_BRIGHTNESS:
 173                setbrightness(gspca_dev, ctrl->val);
 174                break;
 175        case V4L2_CID_SATURATION:
 176                setcolors(gspca_dev, ctrl->val);
 177                break;
 178        case V4L2_CID_GAMMA:
 179                setgamma(gspca_dev, ctrl->val);
 180                break;
 181        case V4L2_CID_ILLUMINATORS_1:
 182                setilluminators(gspca_dev, sd->illum_top->val,
 183                                           sd->illum_bottom->val);
 184                break;
 185        case V4L2_CID_SHARPNESS:
 186                setsharpness(gspca_dev, ctrl->val);
 187                break;
 188        default:
 189                return -EINVAL;
 190        }
 191        return gspca_dev->usb_err;
 192}
 193
 194static const struct v4l2_ctrl_ops mars_ctrl_ops = {
 195        .s_ctrl = mars_s_ctrl,
 196};
 197
 198/* this function is called at probe time */
 199static int sd_init_controls(struct gspca_dev *gspca_dev)
 200{
 201        struct sd *sd = (struct sd *) gspca_dev;
 202        struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
 203
 204        gspca_dev->vdev.ctrl_handler = hdl;
 205        v4l2_ctrl_handler_init(hdl, 6);
 206        sd->brightness = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
 207                        V4L2_CID_BRIGHTNESS, 0, 30, 1, 15);
 208        sd->saturation = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
 209                        V4L2_CID_SATURATION, 0, 255, 1, 200);
 210        sd->gamma = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
 211                        V4L2_CID_GAMMA, 0, 3, 1, 1);
 212        sd->sharpness = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
 213                        V4L2_CID_SHARPNESS, 0, 2, 1, 1);
 214        sd->illum_top = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
 215                        V4L2_CID_ILLUMINATORS_1, 0, 1, 1, 0);
 216        sd->illum_top->flags |= V4L2_CTRL_FLAG_UPDATE;
 217        sd->illum_bottom = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
 218                        V4L2_CID_ILLUMINATORS_2, 0, 1, 1, 0);
 219        sd->illum_bottom->flags |= V4L2_CTRL_FLAG_UPDATE;
 220        if (hdl->error) {
 221                pr_err("Could not initialize controls\n");
 222                return hdl->error;
 223        }
 224        v4l2_ctrl_cluster(2, &sd->illum_top);
 225        return 0;
 226}
 227
 228/* this function is called at probe time */
 229static int sd_config(struct gspca_dev *gspca_dev,
 230                        const struct usb_device_id *id)
 231{
 232        struct cam *cam;
 233
 234        cam = &gspca_dev->cam;
 235        cam->cam_mode = vga_mode;
 236        cam->nmodes = ARRAY_SIZE(vga_mode);
 237        return 0;
 238}
 239
 240/* this function is called at probe and resume time */
 241static int sd_init(struct gspca_dev *gspca_dev)
 242{
 243        return 0;
 244}
 245
 246static int sd_start(struct gspca_dev *gspca_dev)
 247{
 248        struct sd *sd = (struct sd *) gspca_dev;
 249        u8 *data;
 250        int i;
 251
 252        /* create the JPEG header */
 253        jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height,
 254                        gspca_dev->pixfmt.width,
 255                        0x21);          /* JPEG 422 */
 256        jpeg_set_qual(sd->jpeg_hdr, QUALITY);
 257
 258        data = gspca_dev->usb_buf;
 259
 260        data[0] = 0x01;         /* address */
 261        data[1] = 0x01;
 262        reg_w(gspca_dev, 2);
 263
 264        /*
 265           Initialize the MR97113 chip register
 266         */
 267        data[0] = 0x00;         /* address */
 268        data[1] = 0x0c | 0x01;  /* reg 0 */
 269        data[2] = 0x01;         /* reg 1 */
 270        data[3] = gspca_dev->pixfmt.width / 8;  /* h_size , reg 2 */
 271        data[4] = gspca_dev->pixfmt.height / 8; /* v_size , reg 3 */
 272        data[5] = 0x30;         /* reg 4, MI, PAS5101 :
 273                                 *      0x30 for 24mhz , 0x28 for 12mhz */
 274        data[6] = 0x02;         /* reg 5, H start - was 0x04 */
 275        data[7] = v4l2_ctrl_g_ctrl(sd->gamma) * 0x40;   /* reg 0x06: gamma */
 276        data[8] = 0x01;         /* reg 7, V start - was 0x03 */
 277/*      if (h_size == 320 ) */
 278/*              data[9]= 0x56;   * reg 8, 24MHz, 2:1 scale down */
 279/*      else */
 280        data[9] = 0x52;         /* reg 8, 24MHz, no scale down */
 281/*jfm: from win trace*/
 282        data[10] = 0x18;
 283
 284        reg_w(gspca_dev, 11);
 285
 286        data[0] = 0x23;         /* address */
 287        data[1] = 0x09;         /* reg 35, append frame header */
 288
 289        reg_w(gspca_dev, 2);
 290
 291        data[0] = 0x3c;         /* address */
 292/*      if (gspca_dev->width == 1280) */
 293/*              data[1] = 200;   * reg 60, pc-cam frame size
 294                                 *      (unit: 4KB) 800KB */
 295/*      else */
 296        data[1] = 50;           /* 50 reg 60, pc-cam frame size
 297                                 *      (unit: 4KB) 200KB */
 298        reg_w(gspca_dev, 2);
 299
 300        /* auto dark-gain */
 301        data[0] = 0x5e;         /* address */
 302        data[1] = 0;            /* reg 94, Y Gain (auto) */
 303/*jfm: from win trace*/
 304                                /* reg 0x5f/0x60 (LE) = saturation */
 305                                /* h (60): xxxx x100
 306                                 * l (5f): xxxx x000 */
 307        data[2] = v4l2_ctrl_g_ctrl(sd->saturation) << 3;
 308        data[3] = ((v4l2_ctrl_g_ctrl(sd->saturation) >> 2) & 0xf8) | 0x04;
 309        data[4] = v4l2_ctrl_g_ctrl(sd->brightness); /* reg 0x61 = brightness */
 310        data[5] = 0x00;
 311
 312        reg_w(gspca_dev, 6);
 313
 314        data[0] = 0x67;
 315/*jfm: from win trace*/
 316        data[1] = v4l2_ctrl_g_ctrl(sd->sharpness) * 4 + 3;
 317        data[2] = 0x14;
 318        reg_w(gspca_dev, 3);
 319
 320        data[0] = 0x69;
 321        data[1] = 0x2f;
 322        data[2] = 0x28;
 323        data[3] = 0x42;
 324        reg_w(gspca_dev, 4);
 325
 326        data[0] = 0x63;
 327        data[1] = 0x07;
 328        reg_w(gspca_dev, 2);
 329/*jfm: win trace - many writes here to reg 0x64*/
 330
 331        /* initialize the MI sensor */
 332        for (i = 0; i < sizeof mi_data; i++)
 333                mi_w(gspca_dev, i + 1, mi_data[i]);
 334
 335        data[0] = 0x00;
 336        data[1] = 0x4d;         /* ISOC transferring enable... */
 337        reg_w(gspca_dev, 2);
 338
 339        setilluminators(gspca_dev, v4l2_ctrl_g_ctrl(sd->illum_top),
 340                                   v4l2_ctrl_g_ctrl(sd->illum_bottom));
 341
 342        return gspca_dev->usb_err;
 343}
 344
 345static void sd_stopN(struct gspca_dev *gspca_dev)
 346{
 347        struct sd *sd = (struct sd *) gspca_dev;
 348
 349        if (v4l2_ctrl_g_ctrl(sd->illum_top) ||
 350            v4l2_ctrl_g_ctrl(sd->illum_bottom)) {
 351                setilluminators(gspca_dev, false, false);
 352                msleep(20);
 353        }
 354
 355        gspca_dev->usb_buf[0] = 1;
 356        gspca_dev->usb_buf[1] = 0;
 357        reg_w(gspca_dev, 2);
 358}
 359
 360static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 361                        u8 *data,                       /* isoc packet */
 362                        int len)                        /* iso packet length */
 363{
 364        struct sd *sd = (struct sd *) gspca_dev;
 365        int p;
 366
 367        if (len < 6) {
 368/*              gspca_dev->last_packet_type = DISCARD_PACKET; */
 369                return;
 370        }
 371        for (p = 0; p < len - 6; p++) {
 372                if (data[0 + p] == 0xff
 373                    && data[1 + p] == 0xff
 374                    && data[2 + p] == 0x00
 375                    && data[3 + p] == 0xff
 376                    && data[4 + p] == 0x96) {
 377                        if (data[5 + p] == 0x64
 378                            || data[5 + p] == 0x65
 379                            || data[5 + p] == 0x66
 380                            || data[5 + p] == 0x67) {
 381                                PDEBUG(D_PACK, "sof offset: %d len: %d",
 382                                        p, len);
 383                                gspca_frame_add(gspca_dev, LAST_PACKET,
 384                                                data, p);
 385
 386                                /* put the JPEG header */
 387                                gspca_frame_add(gspca_dev, FIRST_PACKET,
 388                                        sd->jpeg_hdr, JPEG_HDR_SZ);
 389                                data += p + 16;
 390                                len -= p + 16;
 391                                break;
 392                        }
 393                }
 394        }
 395        gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
 396}
 397
 398/* sub-driver description */
 399static const struct sd_desc sd_desc = {
 400        .name = MODULE_NAME,
 401        .config = sd_config,
 402        .init = sd_init,
 403        .init_controls = sd_init_controls,
 404        .start = sd_start,
 405        .stopN = sd_stopN,
 406        .pkt_scan = sd_pkt_scan,
 407};
 408
 409/* -- module initialisation -- */
 410static const struct usb_device_id device_table[] = {
 411        {USB_DEVICE(0x093a, 0x050f)},
 412        {}
 413};
 414MODULE_DEVICE_TABLE(usb, device_table);
 415
 416/* -- device connect -- */
 417static int sd_probe(struct usb_interface *intf,
 418                        const struct usb_device_id *id)
 419{
 420        return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
 421                                THIS_MODULE);
 422}
 423
 424static struct usb_driver sd_driver = {
 425        .name = MODULE_NAME,
 426        .id_table = device_table,
 427        .probe = sd_probe,
 428        .disconnect = gspca_disconnect,
 429#ifdef CONFIG_PM
 430        .suspend = gspca_suspend,
 431        .resume = gspca_resume,
 432        .reset_resume = gspca_resume,
 433#endif
 434};
 435
 436module_usb_driver(sd_driver);
 437