linux/arch/arm/mach-mv78xx0/irq.c
Andrew Lunn 278b45b06b ARM: Orion: DT support for IRQ and GPIO Controllers
Both IRQ and GPIO controllers can now be represented in DT.  The IRQ
controllers are setup first, and then the GPIO controllers. Interrupts
for GPIO lines are placed directly after the main interrupts in the
interrupt space.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@googlemail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Josh Coombs <josh.coombs@gmail.com>
Tested-by: Simon Baatz <gmbnomis@gmail.com>
2012-07-27 16:48:14 +02:00

39 lines
1.1 KiB
C

/*
* arch/arm/mach-mv78xx0/irq.c
*
* MV78xx0 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/gpio.h>
#include <linux/kernel.h>
#include <linux/irq.h>
#include <mach/bridge-regs.h>
#include <plat/irq.h>
#include "common.h"
static int __initdata gpio0_irqs[4] = {
IRQ_MV78XX0_GPIO_0_7,
IRQ_MV78XX0_GPIO_8_15,
IRQ_MV78XX0_GPIO_16_23,
IRQ_MV78XX0_GPIO_24_31,
};
void __init mv78xx0_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));
orion_irq_init(64, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_ERR_OFF));
/*
* Initialize gpiolib for GPIOs 0-31. (The GPIO interrupt mask
* registers for core #1 are at an offset of 0x18 from those of
* core #0.)
*/
orion_gpio_init(NULL, 0, 32, (void __iomem *)GPIO_VIRT_BASE,
mv78xx0_core_index() ? 0x18 : 0,
IRQ_MV78XX0_GPIO_START, gpio0_irqs);
}