linux-imx

​

static ssize_t gpio_mockup_debugfs_read(struct file *file,

                    char __user *usr_buf,

                    size_t size, loff_t *ppos)

{

    struct gpio_mockup_dbgfs_private *priv;

    struct gpio_mockup_chip *chip;

    struct seq_file *sfile;

    struct gpio_chip *gc;

    char buf[3];

​

    if (*ppos != 0)

        return 0;

​

    sfile = file->private_data;

    priv = sfile->private;

    chip = priv->chip;

    gc = &chip->gc;

​

    val = gpio_mockup_get(gc, priv->offset);

    cnt = snprintf(buf, sizeof(buf), "%d\n", val);

​

}

​

static ssize_t gpio_mockup_debugfs_write(struct file *file,

                     const char __user *usr_buf,

                     size_t size, loff_t *ppos)

{

    struct gpio_mockup_dbgfs_private *priv;

    int rv, val, curr, irq, irq_type;

    struct gpio_mockup_chip *chip;

    struct seq_file *sfile;