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 <mach/bridge-regs.h>
  14 #include <plat/irq.h>
  15
  16 static int __initdata gpio0_irqs[4] = {
  17         IRQ_KIRKWOOD_GPIO_LOW_0_7,
  18         IRQ_KIRKWOOD_GPIO_LOW_8_15,
  19         IRQ_KIRKWOOD_GPIO_LOW_16_23,
  20         IRQ_KIRKWOOD_GPIO_LOW_24_31,
  21 };
  22
  23 static int __initdata gpio1_irqs[4] = {
  24         IRQ_KIRKWOOD_GPIO_HIGH_0_7,
  25         IRQ_KIRKWOOD_GPIO_HIGH_8_15,
  26         IRQ_KIRKWOOD_GPIO_HIGH_16_23,
  27         0,
  28 };
  29
  30 void __init kirkwood_init_irq(void)
  31 {
  32         orion_irq_init(0, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_LOW_OFF));
  33         orion_irq_init(32, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_HIGH_OFF));
  34
  35         /*
  36          * Initialize gpiolib for GPIOs 0-49.
  37          */
  38         orion_gpio_init(NULL, 0, 32, (void __iomem *)GPIO_LOW_VIRT_BASE, 0,
  39                         IRQ_KIRKWOOD_GPIO_START, gpio0_irqs);
  40         orion_gpio_init(NULL, 32, 18, (void __iomem *)GPIO_HIGH_VIRT_BASE, 0,
  41                         IRQ_KIRKWOOD_GPIO_START + 32, gpio1_irqs);
  42 }