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
kirkwood_init_irq(void)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 }
46