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Stanislav Samsonov794d15b2008-06-22 22:45:10 +02001/*
2 * arch/arm/mach-mv78xx0/irq.c
3 *
4 * MV78xx0 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
11#include <linux/kernel.h>
12#include <linux/init.h>
13#include <linux/pci.h>
Lennert Buytenhekb95a13d2008-10-20 01:51:04 +020014#include <linux/irq.h>
15#include <asm/gpio.h>
Nicolas Pitrefdd8b072009-04-22 20:08:17 +010016#include <mach/bridge-regs.h>
Lennert Buytenhek6f088f12008-08-09 13:44:58 +020017#include <plat/irq.h>
Stanislav Samsonov794d15b2008-06-22 22:45:10 +020018#include "common.h"
19
Lennert Buytenhekb95a13d2008-10-20 01:51:04 +020020static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
21{
22 BUG_ON(irq < IRQ_MV78XX0_GPIO_0_7 || irq > IRQ_MV78XX0_GPIO_24_31);
23
24 orion_gpio_irq_handler((irq - IRQ_MV78XX0_GPIO_0_7) << 3);
25}
26
Stanislav Samsonov794d15b2008-06-22 22:45:10 +020027void __init mv78xx0_init_irq(void)
28{
29 orion_irq_init(0, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_LOW_OFF));
30 orion_irq_init(32, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_HIGH_OFF));
Lennert Buytenhek1f8081f2008-08-26 16:04:05 +020031 orion_irq_init(64, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_ERR_OFF));
Lennert Buytenhekb95a13d2008-10-20 01:51:04 +020032
33 /*
Lennert Buytenhek9eac6d02010-12-14 12:54:03 +010034 * Initialize gpiolib for GPIOs 0-31. (The GPIO interrupt mask
35 * registers for core #1 are at an offset of 0x18 from those of
36 * core #0.)
Lennert Buytenhekb95a13d2008-10-20 01:51:04 +020037 */
Lennert Buytenhek9eac6d02010-12-14 12:54:03 +010038 orion_gpio_init(0, 32, GPIO_VIRT_BASE,
39 mv78xx0_core_index() ? 0x18 : 0,
40 IRQ_MV78XX0_GPIO_START);
Thomas Gleixner6845664a2011-03-24 13:25:22 +010041 irq_set_chained_handler(IRQ_MV78XX0_GPIO_0_7, gpio_irq_handler);
42 irq_set_chained_handler(IRQ_MV78XX0_GPIO_8_15, gpio_irq_handler);
43 irq_set_chained_handler(IRQ_MV78XX0_GPIO_16_23, gpio_irq_handler);
44 irq_set_chained_handler(IRQ_MV78XX0_GPIO_24_31, gpio_irq_handler);
Stanislav Samsonov794d15b2008-06-22 22:45:10 +020045}