arch/arm/mach-kirkwood/irq.c

   1 /*
   2  * arch/arm/mach-kirkwood/irq.c
   3  *
   4  * Kirkwood IRQ handling.
   5  *
   6  * This file is licensed under the terms of the GNU General Public
   7  * License version 2.  This program is licensed "as is" without any
   8  * warranty of any kind, whether express or implied.
   9  */
  10 #include <linux/gpio.h>
  11 #include <linux/kernel.h>
  12 #include <linux/irq.h>
  13 #include <linux/io.h>
  14 #include <mach/bridge-regs.h>
  15 #include <plat/orion-gpio.h>
  16 #include <plat/irq.h>
  17 #include "common.h"
  18
  19 static int __initdata gpio0_irqs[4] = {
  20         IRQ_KIRKWOOD_GPIO_LOW_0_7,
  21         IRQ_KIRKWOOD_GPIO_LOW_8_15,
  22         IRQ_KIRKWOOD_GPIO_LOW_16_23,
  23         IRQ_KIRKWOOD_GPIO_LOW_24_31,
  24 };
  25
  26 static int __initdata gpio1_irqs[4] = {
  27         IRQ_KIRKWOOD_GPIO_HIGH_0_7,
  28         IRQ_KIRKWOOD_GPIO_HIGH_8_15,
  29         IRQ_KIRKWOOD_GPIO_HIGH_16_23,
  30         0,
  31 };
  32
  33 void __init kirkwood_init_irq(void)
  34 {
  35         orion_irq_init(0, IRQ_VIRT_BASE + IRQ_MASK_LOW_OFF);
  36         orion_irq_init(32, IRQ_VIRT_BASE + IRQ_MASK_HIGH_OFF);
  37
  38         /*
  39          * Initialize gpiolib for GPIOs 0-49.
  40          */
  41         orion_gpio_init(NULL, 0, 32, GPIO_LOW_VIRT_BASE, 0,
  42                         IRQ_KIRKWOOD_GPIO_START, gpio0_irqs);
  43         orion_gpio_init(NULL, 32, 18, GPIO_HIGH_VIRT_BASE, 0,
  44                         IRQ_KIRKWOOD_GPIO_START + 32, gpio1_irqs);
  45 }