LXR linux/drivers/media/usb/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 */
  17#define MODULE_NAME "tv8532"
  18
  19#include "gspca.h"
  20
  21MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
  22MODULE_DESCRIPTION("TV8532 USB Camera Driver");
  23MODULE_LICENSE("GPL");
  24
  25/* specific webcam descriptor */
  26struct sd {
  27        struct gspca_dev gspca_dev;     /* !! must be the first item */
  28
  29        __u8 packet;
  30};
  31
  32static const struct v4l2_pix_format sif_mode[] = {
  33        {176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
  34                .bytesperline = 176,
  35                .sizeimage = 176 * 144,
  36                .colorspace = V4L2_COLORSPACE_SRGB,
  37                .priv = 1},
  38        {352, 288, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
  39                .bytesperline = 352,
  40                .sizeimage = 352 * 288,
  41                .colorspace = V4L2_COLORSPACE_SRGB,
  42                .priv = 0},
  43};
  44
  45/* TV-8532A (ICM532A) registers (LE) */
  46#define R00_PART_CONTROL 0x00
  47#define         LATENT_CHANGE   0x80
  48#define         EXPO_CHANGE     0x04
  49#define R01_TIMING_CONTROL_LOW 0x01
  50#define         CMD_EEprom_Open 0x30
  51#define         CMD_EEprom_Close 0x29
  52#define R03_TABLE_ADDR 0x03
  53#define R04_WTRAM_DATA_L 0x04
  54#define R05_WTRAM_DATA_M 0x05
  55#define R06_WTRAM_DATA_H 0x06
  56#define R07_TABLE_LEN   0x07
  57#define R08_RAM_WRITE_ACTION 0x08
  58#define R0C_AD_WIDTHL   0x0c
  59#define R0D_AD_WIDTHH   0x0d
  60#define R0E_AD_HEIGHTL  0x0e
  61#define R0F_AD_HEIGHTH  0x0f
  62#define R10_AD_COL_BEGINL 0x10
  63#define R11_AD_COL_BEGINH 0x11
  64#define         MIRROR          0x04    /* [10] */
  65#define R14_AD_ROW_BEGINL 0x14
  66#define R15_AD_ROWBEGINH  0x15
  67#define R1C_AD_EXPOSE_TIMEL 0x1c
  68#define R20_GAIN_G1L    0x20
  69#define R21_GAIN_G1H    0x21
  70#define R22_GAIN_RL     0x22
  71#define R23_GAIN_RH     0x23
  72#define R24_GAIN_BL     0x24
  73#define R25_GAIN_BH     0x25
  74#define R26_GAIN_G2L    0x26
  75#define R27_GAIN_G2H    0x27
  76#define R28_QUANT       0x28
  77#define R29_LINE        0x29
  78#define R2C_POLARITY    0x2c
  79#define R2D_POINT       0x2d
  80#define R2E_POINTH      0x2e
  81#define R2F_POINTB      0x2f
  82#define R30_POINTBH     0x30
  83#define R31_UPD         0x31
  84#define R2A_HIGH_BUDGET 0x2a
  85#define R2B_LOW_BUDGET  0x2b
  86#define R34_VID         0x34
  87#define R35_VIDH        0x35
  88#define R36_PID         0x36
  89#define R37_PIDH        0x37
  90#define R39_Test1       0x39            /* GPIO */
  91#define R3B_Test3       0x3b            /* GPIO */
  92#define R83_AD_IDH      0x83
  93#define R91_AD_SLOPEREG 0x91
  94#define R94_AD_BITCONTROL 0x94
  95
  96static const u8 eeprom_data[][3] = {
  97/*      dataH dataM dataL */
  98        {0x01, 0x00, 0x01},
  99        {0x01, 0x80, 0x11},
 100        {0x05, 0x00, 0x14},
 101        {0x05, 0x00, 0x1c},
 102        {0x0d, 0x00, 0x1e},
 103        {0x05, 0x00, 0x1f},
 104        {0x05, 0x05, 0x19},
 105        {0x05, 0x01, 0x1b},
 106        {0x05, 0x09, 0x1e},
 107        {0x0d, 0x89, 0x2e},
 108        {0x05, 0x89, 0x2f},
 109        {0x05, 0x0d, 0xd9},
 110        {0x05, 0x09, 0xf1},
 111};
 112
 113
 114/* write 1 byte */
 115static void reg_w1(struct gspca_dev *gspca_dev,
 116                  __u16 index, __u8 value)
 117{
 118        gspca_dev->usb_buf[0] = value;
 119        usb_control_msg(gspca_dev->dev,
 120                        usb_sndctrlpipe(gspca_dev->dev, 0),
 121                        0x02,
 122                        USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 123                        0,      /* value */
 124                        index, gspca_dev->usb_buf, 1, 500);
 125}
 126
 127/* write 2 bytes */
 128static void reg_w2(struct gspca_dev *gspca_dev,
 129                  u16 index, u16 value)
 130{
 131        gspca_dev->usb_buf[0] = value;
 132        gspca_dev->usb_buf[1] = value >> 8;
 133        usb_control_msg(gspca_dev->dev,
 134                        usb_sndctrlpipe(gspca_dev->dev, 0),
 135                        0x02,
 136                        USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 137                        0,      /* value */
 138                        index, gspca_dev->usb_buf, 2, 500);
 139}
 140
 141static void tv_8532WriteEEprom(struct gspca_dev *gspca_dev)
 142{
 143        int i;
 144
 145        reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Open);
 146        for (i = 0; i < ARRAY_SIZE(eeprom_data); i++) {
 147                reg_w1(gspca_dev, R03_TABLE_ADDR, i);
 148                reg_w1(gspca_dev, R04_WTRAM_DATA_L, eeprom_data[i][2]);
 149                reg_w1(gspca_dev, R05_WTRAM_DATA_M, eeprom_data[i][1]);
 150                reg_w1(gspca_dev, R06_WTRAM_DATA_H, eeprom_data[i][0]);
 151                reg_w1(gspca_dev, R08_RAM_WRITE_ACTION, 0);
 152        }
 153        reg_w1(gspca_dev, R07_TABLE_LEN, i);
 154        reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Close);
 155}
 156
 157/* this function is called at probe time */
 158static int sd_config(struct gspca_dev *gspca_dev,
 159                     const struct usb_device_id *id)
 160{
 161        struct cam *cam;
 162
 163        cam = &gspca_dev->cam;
 164        cam->cam_mode = sif_mode;
 165        cam->nmodes = ARRAY_SIZE(sif_mode);
 166
 167        return 0;
 168}
 169
 170static void tv_8532_setReg(struct gspca_dev *gspca_dev)
 171{
 172        reg_w1(gspca_dev, R3B_Test3, 0x0a);     /* Test0Sel = 10 */
 173        /******************************************************/
 174        reg_w1(gspca_dev, R0E_AD_HEIGHTL, 0x90);
 175        reg_w1(gspca_dev, R0F_AD_HEIGHTH, 0x01);
 176        reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, 0x018f);
 177        reg_w1(gspca_dev, R10_AD_COL_BEGINL, 0x44);
 178                                                /* begin active line */
 179        reg_w1(gspca_dev, R11_AD_COL_BEGINH, 0x00);
 180                                                /* mirror and digital gain */
 181        reg_w1(gspca_dev, R14_AD_ROW_BEGINL, 0x0a);
 182
 183        reg_w1(gspca_dev, R94_AD_BITCONTROL, 0x02);
 184        reg_w1(gspca_dev, R91_AD_SLOPEREG, 0x00);
 185        reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
 186                                                /* = 0x84 */
 187}
 188
 189/* this function is called at probe and resume time */
 190static int sd_init(struct gspca_dev *gspca_dev)
 191{
 192        tv_8532WriteEEprom(gspca_dev);
 193
 194        return 0;
 195}
 196
 197static void setexposure(struct gspca_dev *gspca_dev, s32 val)
 198{
 199        reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, val);
 200        reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
 201                                                /* 0x84 */
 202}
 203
 204static void setgain(struct gspca_dev *gspca_dev, s32 val)
 205{
 206        reg_w2(gspca_dev, R20_GAIN_G1L, val);
 207        reg_w2(gspca_dev, R22_GAIN_RL, val);
 208        reg_w2(gspca_dev, R24_GAIN_BL, val);
 209        reg_w2(gspca_dev, R26_GAIN_G2L, val);
 210}
 211
 212/* -- start the camera -- */
 213static int sd_start(struct gspca_dev *gspca_dev)
 214{
 215        struct sd *sd = (struct sd *) gspca_dev;
 216
 217        reg_w1(gspca_dev, R0C_AD_WIDTHL, 0xe8);         /* 0x20; 0x0c */
 218        reg_w1(gspca_dev, R0D_AD_WIDTHH, 0x03);
 219
 220        /************************************************/
 221        reg_w1(gspca_dev, R28_QUANT, 0x90);
 222                                        /* 0x72 compressed mode 0x28 */
 223        if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
 224                /* 176x144 */
 225                reg_w1(gspca_dev, R29_LINE, 0x41);
 226                                        /* CIF - 2 lines/packet */
 227        } else {
 228                /* 352x288 */
 229                reg_w1(gspca_dev, R29_LINE, 0x81);
 230                                        /* CIF - 2 lines/packet */
 231        }
 232        /************************************************/
 233        reg_w1(gspca_dev, R2C_POLARITY, 0x10);          /* slow clock */
 234        reg_w1(gspca_dev, R2D_POINT, 0x14);
 235        reg_w1(gspca_dev, R2E_POINTH, 0x01);
 236        reg_w1(gspca_dev, R2F_POINTB, 0x12);
 237        reg_w1(gspca_dev, R30_POINTBH, 0x01);
 238
 239        tv_8532_setReg(gspca_dev);
 240
 241        /************************************************/
 242        reg_w1(gspca_dev, R31_UPD, 0x01);       /* update registers */
 243        msleep(200);
 244        reg_w1(gspca_dev, R31_UPD, 0x00);       /* end update */
 245
 246        gspca_dev->empty_packet = 0;            /* check the empty packets */
 247        sd->packet = 0;                         /* ignore the first packets */
 248
 249        return 0;
 250}
 251
 252static void sd_stopN(struct gspca_dev *gspca_dev)
 253{
 254        reg_w1(gspca_dev, R3B_Test3, 0x0b);     /* Test0Sel = 11 = GPIO */
 255}
 256
 257static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 258                        u8 *data,                       /* isoc packet */
 259                        int len)                        /* iso packet length */
 260{
 261        struct sd *sd = (struct sd *) gspca_dev;
 262        int packet_type0, packet_type1;
 263
 264        packet_type0 = packet_type1 = INTER_PACKET;
 265        if (gspca_dev->empty_packet) {
 266                gspca_dev->empty_packet = 0;
 267                sd->packet = gspca_dev->pixfmt.height / 2;
 268                packet_type0 = FIRST_PACKET;
 269        } else if (sd->packet == 0)
 270                return;                 /* 2 more lines in 352x288 ! */
 271        sd->packet--;
 272        if (sd->packet == 0)
 273                packet_type1 = LAST_PACKET;
 274
 275        /* each packet contains:
 276         * - header 2 bytes
 277         * - RGRG line
 278         * - 4 bytes
 279         * - GBGB line
 280         * - 4 bytes
 281         */
 282        gspca_frame_add(gspca_dev, packet_type0,
 283                        data + 2, gspca_dev->pixfmt.width);
 284        gspca_frame_add(gspca_dev, packet_type1,
 285                        data + gspca_dev->pixfmt.width + 5,
 286                        gspca_dev->pixfmt.width);
 287}
 288
 289static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
 290{
 291        struct gspca_dev *gspca_dev =
 292                container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
 293
 294        gspca_dev->usb_err = 0;
 295
 296        if (!gspca_dev->streaming)
 297                return 0;
 298
 299        switch (ctrl->id) {
 300        case V4L2_CID_EXPOSURE:
 301                setexposure(gspca_dev, ctrl->val);
 302                break;
 303        case V4L2_CID_GAIN:
 304                setgain(gspca_dev, ctrl->val);
 305                break;
 306        }
 307        return gspca_dev->usb_err;
 308}
 309
 310static const struct v4l2_ctrl_ops sd_ctrl_ops = {
 311        .s_ctrl = sd_s_ctrl,
 312};
 313
 314static int sd_init_controls(struct gspca_dev *gspca_dev)
 315{
 316        struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
 317
 318        gspca_dev->vdev.ctrl_handler = hdl;
 319        v4l2_ctrl_handler_init(hdl, 2);
 320        v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
 321                        V4L2_CID_EXPOSURE, 0, 0x18f, 1, 0x18f);
 322        v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
 323                        V4L2_CID_GAIN, 0, 0x7ff, 1, 0x100);
 324
 325        if (hdl->error) {
 326                pr_err("Could not initialize controls\n");
 327                return hdl->error;
 328        }
 329        return 0;
 330}
 331
 332/* sub-driver description */
 333static const struct sd_desc sd_desc = {
 334        .name = MODULE_NAME,
 335        .config = sd_config,
 336        .init = sd_init,
 337        .init_controls = sd_init_controls,
 338        .start = sd_start,
 339        .stopN = sd_stopN,
 340        .pkt_scan = sd_pkt_scan,
 341};
 342
 343/* -- module initialisation -- */
 344static const struct usb_device_id device_table[] = {
 345        {USB_DEVICE(0x046d, 0x0920)},
 346        {USB_DEVICE(0x046d, 0x0921)},
 347        {USB_DEVICE(0x0545, 0x808b)},
 348        {USB_DEVICE(0x0545, 0x8333)},
 349        {USB_DEVICE(0x0923, 0x010f)},
 350        {}
 351};
 352
 353MODULE_DEVICE_TABLE(usb, device_table);
 354
 355/* -- device connect -- */
 356static int sd_probe(struct usb_interface *intf,
 357                    const struct usb_device_id *id)
 358{
 359        return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
 360                               THIS_MODULE);
 361}
 362
 363static struct usb_driver sd_driver = {
 364        .name = MODULE_NAME,
 365        .id_table = device_table,
 366        .probe = sd_probe,
 367        .disconnect = gspca_disconnect,
 368#ifdef CONFIG_PM
 369        .suspend = gspca_suspend,
 370        .resume = gspca_resume,
 371        .reset_resume = gspca_resume,
 372#endif
 373};
 374
 375module_usb_driver(sd_driver);
 376