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 * 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
  25MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
  26MODULE_DESCRIPTION("TV8532 USB Camera Driver");
  27MODULE_LICENSE("GPL");
  28
  29/* specific webcam descriptor */
  30struct sd {
  31        struct gspca_dev gspca_dev;     /* !! must be the first item */
  32
  33        __u8 packet;
  34};
  35
  36static const struct v4l2_pix_format sif_mode[] = {
  37        {176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
  38                .bytesperline = 176,
  39                .sizeimage = 176 * 144,
  40                .colorspace = V4L2_COLORSPACE_SRGB,
  41                .priv = 1},
  42        {352, 288, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
  43                .bytesperline = 352,
  44                .sizeimage = 352 * 288,
  45                .colorspace = V4L2_COLORSPACE_SRGB,
  46                .priv = 0},
  47};
  48
  49/* TV-8532A (ICM532A) registers (LE) */
  50#define R00_PART_CONTROL 0x00
  51#define         LATENT_CHANGE   0x80
  52#define         EXPO_CHANGE     0x04
  53#define R01_TIMING_CONTROL_LOW 0x01
  54#define         CMD_EEprom_Open 0x30
  55#define         CMD_EEprom_Close 0x29
  56#define R03_TABLE_ADDR 0x03
  57#define R04_WTRAM_DATA_L 0x04
  58#define R05_WTRAM_DATA_M 0x05
  59#define R06_WTRAM_DATA_H 0x06
  60#define R07_TABLE_LEN   0x07
  61#define R08_RAM_WRITE_ACTION 0x08
  62#define R0C_AD_WIDTHL   0x0c
  63#define R0D_AD_WIDTHH   0x0d
  64#define R0E_AD_HEIGHTL  0x0e
  65#define R0F_AD_HEIGHTH  0x0f
  66#define R10_AD_COL_BEGINL 0x10
  67#define R11_AD_COL_BEGINH 0x11
  68#define         MIRROR          0x04    /* [10] */
  69#define R14_AD_ROW_BEGINL 0x14
  70#define R15_AD_ROWBEGINH  0x15
  71#define R1C_AD_EXPOSE_TIMEL 0x1c
  72#define R20_GAIN_G1L    0x20
  73#define R21_GAIN_G1H    0x21
  74#define R22_GAIN_RL     0x22
  75#define R23_GAIN_RH     0x23
  76#define R24_GAIN_BL     0x24
  77#define R25_GAIN_BH     0x25
  78#define R26_GAIN_G2L    0x26
  79#define R27_GAIN_G2H    0x27
  80#define R28_QUANT       0x28
  81#define R29_LINE        0x29
  82#define R2C_POLARITY    0x2c
  83#define R2D_POINT       0x2d
  84#define R2E_POINTH      0x2e
  85#define R2F_POINTB      0x2f
  86#define R30_POINTBH     0x30
  87#define R31_UPD         0x31
  88#define R2A_HIGH_BUDGET 0x2a
  89#define R2B_LOW_BUDGET  0x2b
  90#define R34_VID         0x34
  91#define R35_VIDH        0x35
  92#define R36_PID         0x36
  93#define R37_PIDH        0x37
  94#define R39_Test1       0x39            /* GPIO */
  95#define R3B_Test3       0x3b            /* GPIO */
  96#define R83_AD_IDH      0x83
  97#define R91_AD_SLOPEREG 0x91
  98#define R94_AD_BITCONTROL 0x94
  99
 100static const u8 eeprom_data[][3] = {
 101/*      dataH dataM dataL */
 102        {0x01, 0x00, 0x01},
 103        {0x01, 0x80, 0x11},
 104        {0x05, 0x00, 0x14},
 105        {0x05, 0x00, 0x1c},
 106        {0x0d, 0x00, 0x1e},
 107        {0x05, 0x00, 0x1f},
 108        {0x05, 0x05, 0x19},
 109        {0x05, 0x01, 0x1b},
 110        {0x05, 0x09, 0x1e},
 111        {0x0d, 0x89, 0x2e},
 112        {0x05, 0x89, 0x2f},
 113        {0x05, 0x0d, 0xd9},
 114        {0x05, 0x09, 0xf1},
 115};
 116
 117
 118/* write 1 byte */
 119static void reg_w1(struct gspca_dev *gspca_dev,
 120                  __u16 index, __u8 value)
 121{
 122        gspca_dev->usb_buf[0] = value;
 123        usb_control_msg(gspca_dev->dev,
 124                        usb_sndctrlpipe(gspca_dev->dev, 0),
 125                        0x02,
 126                        USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 127                        0,      /* value */
 128                        index, gspca_dev->usb_buf, 1, 500);
 129}
 130
 131/* write 2 bytes */
 132static void reg_w2(struct gspca_dev *gspca_dev,
 133                  u16 index, u16 value)
 134{
 135        gspca_dev->usb_buf[0] = value;
 136        gspca_dev->usb_buf[1] = value >> 8;
 137        usb_control_msg(gspca_dev->dev,
 138                        usb_sndctrlpipe(gspca_dev->dev, 0),
 139                        0x02,
 140                        USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 141                        0,      /* value */
 142                        index, gspca_dev->usb_buf, 2, 500);
 143}
 144
 145static void tv_8532WriteEEprom(struct gspca_dev *gspca_dev)
 146{
 147        int i;
 148
 149        reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Open);
 150        for (i = 0; i < ARRAY_SIZE(eeprom_data); i++) {
 151                reg_w1(gspca_dev, R03_TABLE_ADDR, i);
 152                reg_w1(gspca_dev, R04_WTRAM_DATA_L, eeprom_data[i][2]);
 153                reg_w1(gspca_dev, R05_WTRAM_DATA_M, eeprom_data[i][1]);
 154                reg_w1(gspca_dev, R06_WTRAM_DATA_H, eeprom_data[i][0]);
 155                reg_w1(gspca_dev, R08_RAM_WRITE_ACTION, 0);
 156        }
 157        reg_w1(gspca_dev, R07_TABLE_LEN, i);
 158        reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Close);
 159}
 160
 161/* this function is called at probe time */
 162static int sd_config(struct gspca_dev *gspca_dev,
 163                     const struct usb_device_id *id)
 164{
 165        struct cam *cam;
 166
 167        cam = &gspca_dev->cam;
 168        cam->cam_mode = sif_mode;
 169        cam->nmodes = ARRAY_SIZE(sif_mode);
 170
 171        return 0;
 172}
 173
 174static void tv_8532_setReg(struct gspca_dev *gspca_dev)
 175{
 176        reg_w1(gspca_dev, R3B_Test3, 0x0a);     /* Test0Sel = 10 */
 177        /******************************************************/
 178        reg_w1(gspca_dev, R0E_AD_HEIGHTL, 0x90);
 179        reg_w1(gspca_dev, R0F_AD_HEIGHTH, 0x01);
 180        reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, 0x018f);
 181        reg_w1(gspca_dev, R10_AD_COL_BEGINL, 0x44);
 182                                                /* begin active line */
 183        reg_w1(gspca_dev, R11_AD_COL_BEGINH, 0x00);
 184                                                /* mirror and digital gain */
 185        reg_w1(gspca_dev, R14_AD_ROW_BEGINL, 0x0a);
 186
 187        reg_w1(gspca_dev, R94_AD_BITCONTROL, 0x02);
 188        reg_w1(gspca_dev, R91_AD_SLOPEREG, 0x00);
 189        reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
 190                                                /* = 0x84 */
 191}
 192
 193/* this function is called at probe and resume time */
 194static int sd_init(struct gspca_dev *gspca_dev)
 195{
 196        tv_8532WriteEEprom(gspca_dev);
 197
 198        return 0;
 199}
 200
 201static void setexposure(struct gspca_dev *gspca_dev, s32 val)
 202{
 203        reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, val);
 204        reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
 205                                                /* 0x84 */
 206}
 207
 208static void setgain(struct gspca_dev *gspca_dev, s32 val)
 209{
 210        reg_w2(gspca_dev, R20_GAIN_G1L, val);
 211        reg_w2(gspca_dev, R22_GAIN_RL, val);
 212        reg_w2(gspca_dev, R24_GAIN_BL, val);
 213        reg_w2(gspca_dev, R26_GAIN_G2L, val);
 214}
 215
 216/* -- start the camera -- */
 217static int sd_start(struct gspca_dev *gspca_dev)
 218{
 219        struct sd *sd = (struct sd *) gspca_dev;
 220
 221        reg_w1(gspca_dev, R0C_AD_WIDTHL, 0xe8);         /* 0x20; 0x0c */
 222        reg_w1(gspca_dev, R0D_AD_WIDTHH, 0x03);
 223
 224        /************************************************/
 225        reg_w1(gspca_dev, R28_QUANT, 0x90);
 226                                        /* 0x72 compressed mode 0x28 */
 227        if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
 228                /* 176x144 */
 229                reg_w1(gspca_dev, R29_LINE, 0x41);
 230                                        /* CIF - 2 lines/packet */
 231        } else {
 232                /* 352x288 */
 233                reg_w1(gspca_dev, R29_LINE, 0x81);
 234                                        /* CIF - 2 lines/packet */
 235        }
 236        /************************************************/
 237        reg_w1(gspca_dev, R2C_POLARITY, 0x10);          /* slow clock */
 238        reg_w1(gspca_dev, R2D_POINT, 0x14);
 239        reg_w1(gspca_dev, R2E_POINTH, 0x01);
 240        reg_w1(gspca_dev, R2F_POINTB, 0x12);
 241        reg_w1(gspca_dev, R30_POINTBH, 0x01);
 242
 243        tv_8532_setReg(gspca_dev);
 244
 245        /************************************************/
 246        reg_w1(gspca_dev, R31_UPD, 0x01);       /* update registers */
 247        msleep(200);
 248        reg_w1(gspca_dev, R31_UPD, 0x00);       /* end update */
 249
 250        gspca_dev->empty_packet = 0;            /* check the empty packets */
 251        sd->packet = 0;                         /* ignore the first packets */
 252
 253        return 0;
 254}
 255
 256static void sd_stopN(struct gspca_dev *gspca_dev)
 257{
 258        reg_w1(gspca_dev, R3B_Test3, 0x0b);     /* Test0Sel = 11 = GPIO */
 259}
 260
 261static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 262                        u8 *data,                       /* isoc packet */
 263                        int len)                        /* iso packet length */
 264{
 265        struct sd *sd = (struct sd *) gspca_dev;
 266        int packet_type0, packet_type1;
 267
 268        packet_type0 = packet_type1 = INTER_PACKET;
 269        if (gspca_dev->empty_packet) {
 270                gspca_dev->empty_packet = 0;
 271                sd->packet = gspca_dev->pixfmt.height / 2;
 272                packet_type0 = FIRST_PACKET;
 273        } else if (sd->packet == 0)
 274                return;                 /* 2 more lines in 352x288 ! */
 275        sd->packet--;
 276        if (sd->packet == 0)
 277                packet_type1 = LAST_PACKET;
 278
 279        /* each packet contains:
 280         * - header 2 bytes
 281         * - RGRG line
 282         * - 4 bytes
 283         * - GBGB line
 284         * - 4 bytes
 285         */
 286        gspca_frame_add(gspca_dev, packet_type0,
 287                        data + 2, gspca_dev->pixfmt.width);
 288        gspca_frame_add(gspca_dev, packet_type1,
 289                        data + gspca_dev->pixfmt.width + 5,
 290                        gspca_dev->pixfmt.width);
 291}
 292
 293static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
 294{
 295        struct gspca_dev *gspca_dev =
 296                container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
 297
 298        gspca_dev->usb_err = 0;
 299
 300        if (!gspca_dev->streaming)
 301                return 0;
 302
 303        switch (ctrl->id) {
 304        case V4L2_CID_EXPOSURE:
 305                setexposure(gspca_dev, ctrl->val);
 306                break;
 307        case V4L2_CID_GAIN:
 308                setgain(gspca_dev, ctrl->val);
 309                break;
 310        }
 311        return gspca_dev->usb_err;
 312}
 313
 314static const struct v4l2_ctrl_ops sd_ctrl_ops = {
 315        .s_ctrl = sd_s_ctrl,
 316};
 317
 318static int sd_init_controls(struct gspca_dev *gspca_dev)
 319{
 320        struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
 321
 322        gspca_dev->vdev.ctrl_handler = hdl;
 323        v4l2_ctrl_handler_init(hdl, 2);
 324        v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
 325                        V4L2_CID_EXPOSURE, 0, 0x18f, 1, 0x18f);
 326        v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
 327                        V4L2_CID_GAIN, 0, 0x7ff, 1, 0x100);
 328
 329        if (hdl->error) {
 330                pr_err("Could not initialize controls\n");
 331                return hdl->error;
 332        }
 333        return 0;
 334}
 335
 336/* sub-driver description */
 337static const struct sd_desc sd_desc = {
 338        .name = MODULE_NAME,
 339        .config = sd_config,
 340        .init = sd_init,
 341        .init_controls = sd_init_controls,
 342        .start = sd_start,
 343        .stopN = sd_stopN,
 344        .pkt_scan = sd_pkt_scan,
 345};
 346
 347/* -- module initialisation -- */
 348static const struct usb_device_id device_table[] = {
 349        {USB_DEVICE(0x046d, 0x0920)},
 350        {USB_DEVICE(0x046d, 0x0921)},
 351        {USB_DEVICE(0x0545, 0x808b)},
 352        {USB_DEVICE(0x0545, 0x8333)},
 353        {USB_DEVICE(0x0923, 0x010f)},
 354        {}
 355};
 356
 357MODULE_DEVICE_TABLE(usb, device_table);
 358
 359/* -- device connect -- */
 360static int sd_probe(struct usb_interface *intf,
 361                    const struct usb_device_id *id)
 362{
 363        return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
 364                               THIS_MODULE);
 365}
 366
 367static struct usb_driver sd_driver = {
 368        .name = MODULE_NAME,
 369        .id_table = device_table,
 370        .probe = sd_probe,
 371        .disconnect = gspca_disconnect,
 372#ifdef CONFIG_PM
 373        .suspend = gspca_suspend,
 374        .resume = gspca_resume,
 375        .reset_resume = gspca_resume,
 376#endif
 377};
 378
 379module_usb_driver(sd_driver);
 380