pinctrl: lynxpoint: Extract lp_gpio_acpi_use() for future use

	return lg->regs + reg + reg_offset;

}

static bool lp_gpio_acpi_use(struct lp_gpio *lg, unsigned int pin)

{

	void __iomem *acpi_use;

	acpi_use = lp_gpio_reg(&lg->chip, pin, LP_ACPI_OWNED);

	if (!acpi_use)

		return true;

	return !(ioread32(acpi_use) & BIT(pin % 32));

}

static int lp_gpio_request(struct gpio_chip *chip, unsigned int offset)

{

	struct lp_gpio *lg = gpiochip_get_data(chip);

	void __iomem *reg = lp_gpio_reg(chip, offset, LP_CONFIG1);

	void __iomem *conf2 = lp_gpio_reg(chip, offset, LP_CONFIG2);

	void __iomem *acpi_use = lp_gpio_reg(chip, offset, LP_ACPI_OWNED);

	u32 value;

	pm_runtime_get(lg->dev); /* should we put if failed */

	/* Fail if BIOS reserved pin for ACPI use */

	if (!(ioread32(acpi_use) & BIT(offset % 32))) {

	if (lp_gpio_acpi_use(lg, offset)) {

		dev_err(lg->dev, "gpio %d reserved for ACPI\n", offset);

		return -EBUSY;

	}