GPIO_EDGE_SEL
if (GPIO_EDGE_SEL >= 0) {
if (GPIO_EDGE_SEL >= 0) {
val = readl(port->base + GPIO_EDGE_SEL);
port->base + GPIO_EDGE_SEL);
port->base + GPIO_EDGE_SEL);
port->gpio_saved_reg.edge_sel = readl(port->base + GPIO_EDGE_SEL);
writel(port->gpio_saved_reg.edge_sel, port->base + GPIO_EDGE_SEL);