求助：ov2640 产品 id识别失败

huangkai1 · 发表于 2023-1-12 00:42:12

求助！！！大佬速来

看驱动源码是挂在ov2640.c的probe这里：

有大佬帮忙顶下咩

huangkai1 · 发表于 2023-1-12 00:43:01

dmesg 后
打印报错：ov2640 1-0030: Product ID error fb:fb

huangkai1 · 发表于 2023-1-12 00:43:51

static int ov2640_video_probe(struct i2c_client *client)
964  {
965    struct ov2640_priv *priv = to_ov2640(client);
966    u8 pid, ver, midh, midl;
967    const char *devname;
968    int ret;
969
970    ret = ov2640_s_power(&priv->subdev, 1);
971    if (ret < 0)
972    return ret;
973
974    /*
975       * check and show product ID and manufacturer ID
976       */
977    i2c_smbus_write_byte_data(client, BANK_SEL, BANK_SEL_SENS);
978    pid  = i2c_smbus_read_byte_data(client, PID);
979    ver  = i2c_smbus_read_byte_data(client, VER);
980    midh = i2c_smbus_read_byte_data(client, MIDH);
981    midl = i2c_smbus_read_byte_data(client, MIDL);
982
983    switch (VERSION(pid, ver)) {
984    case PID_OV2640:
985    devname    = "ov2640";
986    break;
987    default:
988    dev_err(&client->dev,
989    "Product ID error %x:%x\n", pid, ver);
990    ret = -ENODEV;
991    goto done;
992    }
993
994    dev_info(&client->dev,
995       "%s Product ID %0x:%0x Manufacturer ID %x:%x\n",
996       devname, pid, ver, midh, midl);
997
998    ret = v4l2_ctrl_handler_setup(&priv->hdl);
999
1000  done:
1001    ov2640_s_power(&priv->subdev, 0);
1002    return ret;
1003  }