关于mini2440板子引出的gpio问题

  最近我用万用表量了一下板子的引出的gpio(CON4 )电压7,9,11,13,15引脚上的电压为3.5v ,23,25,27,29引脚上的电压为0,我想问一下这些引脚被其它驱动引用之后输出为高电平还是没有引用的输出高电平

没有人回答,我在顶一下

缺省BSP无视GPIO，因为它们“谁用谁知道”

另外我仿mini2440_leds驱动写了一个驱动,希望GPF0,GPF1,GPF2,GPF3能输出低电平,运行之后发现没输出低电平
我的驱动如下

#define DEVICE_NAME "motors"

static unsigned long motors_table [] = {
    S3C2410_GPF(0),
    S3C2410_GPF(1),
    S3C2410_GPF(2),
    S3C2410_GPF(3),
};

static unsigned int motors_cfg_table [] = {
    S3C2410_GPIO_OUTPUT,
    S3C2410_GPIO_OUTPUT,
    S3C2410_GPIO_OUTPUT,
    S3C2410_GPIO_OUTPUT,
};

static int sbc2440_motors_ioctl(
    struct inode *inode,
    struct file *file,
    unsigned int cmd,
    unsigned long arg)
{
    switch(cmd) {
    case 0:
    case 1:
        if (arg > 4) {
            return -EINVAL;
        }
        s3c2410_gpio_setpin(motors_table[arg], !cmd);
        return 0;
    default:
        return -EINVAL;
    }
}

static struct file_operations dev_fops = {
    .owner    =    THIS_MODULE,
    .ioctl    =    sbc2440_motors_ioctl,
};

static struct miscdevice misc = {
    .minor = MISC_DYNAMIC_MINOR,
    .name = DEVICE_NAME,
    .fops = &dev_fops,
};

static int __init dev_init(void)
{
    int ret;

    int i;
    
    for (i = 0; i < 4; i++) {
        s3c2410_gpio_cfgpin(motors_table, motors_cfg_table);
        s3c2410_gpio_setpin(motors_table, 0);
    }

    ret = misc_register(&misc);

    printk (DEVICE_NAME"\tinitialized\n");

    return ret;
}

static void __exit dev_exit(void)
{
    misc_deregister(&misc);
}

module_init(dev_init);
module_exit(dev_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("zhz Inc.");

这是测试代码
int main(int argc, char **argv)
{
    int on;
    int led_no;
    int fd;
    if (argc != 3 || sscanf(argv[1], "%d", &led_no) != 1 || sscanf(argv[2],"%d", &on) != 1 ||
        on < 0 || on > 1 || led_no < 0 || led_no > 3) {
        fprintf(stderr, "Usage: leds led_no 0|1\n");
        exit(1);
    }
    fd = open("/dev/motors0", 0);
    if (fd < 0) {
        fd = open("/dev/motors", 0);
    }
    if (fd < 0) {
        perror("open device motors");
        exit(1);
    }
    ioctl(fd, on, led_no);
    close(fd);
    return 0;
}