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review.shift-gmbh.com / SHIFTPHONES / kernel / common / 6845664a6a7d443f03883db59d10749d38d98b8e / . / arch / arm / mach-orion5x / irq.c
blob: 43cf8bc9767bbe8cb5fab72f06b11da74c804d8d [file] [log] [blame]
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]1/*
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400[diff] [blame]2 * arch/arm/mach-orion5x/irq.c
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]3 *
4 * Core IRQ functions for Marvell Orion System On Chip
5 *
6 * Maintainer: Tzachi Perelstein <tzachi@marvell.com>
7 *
8 * This file is licensed under the terms of the GNU General Public
Lennert Buytenhek159ffb32008-03-27 14:51:41 -0400[diff] [blame]9 * License version 2. This program is licensed "as is" without any
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]10 * warranty of any kind, whether express or implied.
11 */
12
13#include <linux/kernel.h>
14#include <linux/init.h>
15#include <linux/irq.h>
Russell Kingfced80c2008-09-06 12:10:45 +0100[diff] [blame]16#include <linux/io.h>
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]17#include <asm/gpio.h>
Nicolas Pitrefdd8b072009-04-22 20:08:17 +0100[diff] [blame]18#include <mach/bridge-regs.h>
Lennert Buytenhek6f088f12008-08-09 13:44:58 +0200[diff] [blame]19#include <plat/irq.h>
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]20#include "common.h"
21
Lennert Buytenhek07332312008-10-20 01:51:03 +0200[diff] [blame]22static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
Tzachi Perelsteinf0066612007-11-15 10:57:48 +0200[diff] [blame]23{
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400[diff] [blame]24 BUG_ON(irq < IRQ_ORION5X_GPIO_0_7 || irq > IRQ_ORION5X_GPIO_24_31);
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]25
Lennert Buytenhek07332312008-10-20 01:51:03 +0200[diff] [blame]26 orion_gpio_irq_handler((irq - IRQ_ORION5X_GPIO_0_7) << 3);
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]27}
28
Lennert Buytenhek07332312008-10-20 01:51:03 +0200[diff] [blame]29void __init orion5x_init_irq(void)
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]30{
Lennert Buytenhek07332312008-10-20 01:51:03 +0200[diff] [blame]31 orion_irq_init(0, (void __iomem *)MAIN_IRQ_MASK);
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]32
33 /*
Lennert Buytenhek9eac6d02010-12-14 12:54:03 +0100[diff] [blame]34 * Initialize gpiolib for GPIOs 0-31.
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]35 */
Lennert Buytenhek9eac6d02010-12-14 12:54:03 +0100[diff] [blame]36 orion_gpio_init(0, 32, GPIO_VIRT_BASE, 0, IRQ_ORION5X_GPIO_START);
Thomas Gleixner6845664a2011-03-24 13:25:22 +0100[diff] [blame^]37 irq_set_chained_handler(IRQ_ORION5X_GPIO_0_7, gpio_irq_handler);
38 irq_set_chained_handler(IRQ_ORION5X_GPIO_8_15, gpio_irq_handler);
39 irq_set_chained_handler(IRQ_ORION5X_GPIO_16_23, gpio_irq_handler);
40 irq_set_chained_handler(IRQ_ORION5X_GPIO_24_31, gpio_irq_handler);
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]41}