linux-imx

    r->out = (r->out & ~*mask) | (*bits & *mask);

    writel_relaxed(r->out, r->reg);

    spin_unlock_irqrestore(&r->lock, flags);

}

​

static int gpio_reg_to_irq(struct gpio_chip *gc, unsigned offset)

{

    struct gpio_reg *r = to_gpio_reg(gc);

    int irq = r->irqs[offset];

​

​

    return irq;

}

​

/**

 * gpio_reg_init - add a fixed in/out register as gpio

 * @dev: optional struct device associated with this register

 * @base: start gpio number, or -1 to allocate

 * @num: number of GPIOs, maximum 32

 * @label: GPIO chip label