- int port;
- int line;
-
- line = irq - IRQ_EP93XX_GPIO(0);
- if (line >= 0 && line < 16) {
- gpio_line_config(line, GPIO_IN);
- } else {
- gpio_line_config(EP93XX_GPIO_LINE_F(line), GPIO_IN);
+ struct irq_desc *desc = irq_desc + irq;
+ const int gpio = irq_to_gpio(irq);
+ const int port = gpio >> 3;
+ const int port_mask = 1 << (gpio & 7);
+
+ ep93xx_gpio_set_direction(gpio, GPIO_IN);
+
+ switch (type) {
+ case IRQT_RISING:
+ gpio_int_type1[port] |= port_mask;
+ gpio_int_type2[port] |= port_mask;
+ desc->handle_irq = handle_edge_irq;
+ break;
+ case IRQT_FALLING:
+ gpio_int_type1[port] |= port_mask;
+ gpio_int_type2[port] &= ~port_mask;
+ desc->handle_irq = handle_edge_irq;
+ break;
+ case IRQT_HIGH:
+ gpio_int_type1[port] &= ~port_mask;
+ gpio_int_type2[port] |= port_mask;
+ desc->handle_irq = handle_level_irq;
+ break;
+ case IRQT_LOW:
+ gpio_int_type1[port] &= ~port_mask;
+ gpio_int_type2[port] &= ~port_mask;
+ desc->handle_irq = handle_level_irq;
+ break;
+ case IRQT_BOTHEDGE:
+ gpio_int_type1[port] |= port_mask;
+ /* set initial polarity based on current input level */
+ if (gpio_get_value(gpio))
+ gpio_int_type2[port] &= ~port_mask; /* falling */
+ else
+ gpio_int_type2[port] |= port_mask; /* rising */
+ desc->handle_irq = handle_edge_irq;
+ break;
+ default:
+ pr_err("ep93xx: failed to set irq type %d for gpio %d\n",
+ type, gpio);
+ return -EINVAL;