kernel-fxtec-pro1x/arch/arm/mach-kirkwood/irq.c
Lennert Buytenhek 9eac6d0a4e ARM: Remove dependency of plat-orion GPIO code on mach directory includes.
This patch makes the various mach dirs that use the plat-orion GPIO
code pass in GPIO-related platform info (GPIO controller base address,
secondary base IRQ number, etc) explicitly, instead of having
plat-orion get those values by including a mach dir include file --
the latter mechanism is problematic if you want to support multiple
ARM platforms in the same kernel image.

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
2011-03-03 16:27:02 -05:00

48 lines
1.5 KiB
C

/*
* arch/arm/mach-kirkwood/irq.c
*
* Kirkwood IRQ handling.
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <mach/bridge-regs.h>
#include <plat/irq.h>
#include <asm/gpio.h>
#include "common.h"
static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
{
BUG_ON(irq < IRQ_KIRKWOOD_GPIO_LOW_0_7);
BUG_ON(irq > IRQ_KIRKWOOD_GPIO_HIGH_16_23);
orion_gpio_irq_handler((irq - IRQ_KIRKWOOD_GPIO_LOW_0_7) << 3);
}
void __init kirkwood_init_irq(void)
{
orion_irq_init(0, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_LOW_OFF));
orion_irq_init(32, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_HIGH_OFF));
/*
* Initialize gpiolib for GPIOs 0-49.
*/
orion_gpio_init(0, 32, GPIO_LOW_VIRT_BASE, 0,
IRQ_KIRKWOOD_GPIO_START);
set_irq_chained_handler(IRQ_KIRKWOOD_GPIO_LOW_0_7, gpio_irq_handler);
set_irq_chained_handler(IRQ_KIRKWOOD_GPIO_LOW_8_15, gpio_irq_handler);
set_irq_chained_handler(IRQ_KIRKWOOD_GPIO_LOW_16_23, gpio_irq_handler);
set_irq_chained_handler(IRQ_KIRKWOOD_GPIO_LOW_24_31, gpio_irq_handler);
orion_gpio_init(32, 18, GPIO_HIGH_VIRT_BASE, 0,
IRQ_KIRKWOOD_GPIO_START + 32);
set_irq_chained_handler(IRQ_KIRKWOOD_GPIO_HIGH_0_7, gpio_irq_handler);
set_irq_chained_handler(IRQ_KIRKWOOD_GPIO_HIGH_8_15, gpio_irq_handler);
set_irq_chained_handler(IRQ_KIRKWOOD_GPIO_HIGH_16_23, gpio_irq_handler);
}