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gerrit-public.fairphone.software / kernel / msm / 2f8163baada3dbd0ce891c35bc59ae46e773487a / . / arch / arm / mach-orion5x / irq.c
blob: b1b45fff776e614f68ed1058e1313361e03b487b [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 */
Russell King2f8163b2011-07-26 10:53:52 +0100[diff] [blame^]12#include <linux/gpio.h>
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]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>
Nicolas Pitrefdd8b072009-04-22 20:08:17 +0100[diff] [blame]17#include <mach/bridge-regs.h>
Lennert Buytenhek6f088f12008-08-09 13:44:58 +0200[diff] [blame]18#include <plat/irq.h>
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]19#include "common.h"
20
Lennert Buytenhek07332312008-10-20 01:51:03 +0200[diff] [blame]21static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
Tzachi Perelsteinf0066612007-11-15 10:57:48 +0200[diff] [blame]22{
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400[diff] [blame]23 BUG_ON(irq < IRQ_ORION5X_GPIO_0_7 || irq > IRQ_ORION5X_GPIO_24_31);
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]24
Lennert Buytenhek07332312008-10-20 01:51:03 +0200[diff] [blame]25 orion_gpio_irq_handler((irq - IRQ_ORION5X_GPIO_0_7) << 3);
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]26}
27
Lennert Buytenhek07332312008-10-20 01:51:03 +0200[diff] [blame]28void __init orion5x_init_irq(void)
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]29{
Lennert Buytenhek07332312008-10-20 01:51:03 +0200[diff] [blame]30 orion_irq_init(0, (void __iomem *)MAIN_IRQ_MASK);
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]31
32 /*
Lennert Buytenhek9eac6d02010-12-14 12:54:03 +0100[diff] [blame]33 * Initialize gpiolib for GPIOs 0-31.
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]34 */
Lennert Buytenhek9eac6d02010-12-14 12:54:03 +0100[diff] [blame]35 orion_gpio_init(0, 32, GPIO_VIRT_BASE, 0, IRQ_ORION5X_GPIO_START);
Thomas Gleixner6845664a2011-03-24 13:25:22 +0100[diff] [blame]36 irq_set_chained_handler(IRQ_ORION5X_GPIO_0_7, gpio_irq_handler);
37 irq_set_chained_handler(IRQ_ORION5X_GPIO_8_15, gpio_irq_handler);
38 irq_set_chained_handler(IRQ_ORION5X_GPIO_16_23, gpio_irq_handler);
39 irq_set_chained_handler(IRQ_ORION5X_GPIO_24_31, gpio_irq_handler);
Tzachi Perelstein3085de62007-10-23 15:14:42 -0400[diff] [blame]40}