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ARM: Orion: DT support for IRQ and GPIO Controllers

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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>
This commit is contained in:
Andrew Lunn
2012-06-27 13:40:04 +02:00
parent 89fb2d77d5
commit 278b45b06b
13 changed files with 341 additions and 166 deletions
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22
arch/arm/mach-orion5x/irq.c
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@@ -11,19 +11,16 @@
*/
#include <linux/gpio.h>
#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 "common.h"
static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
{
BUG_ON(irq < IRQ_ORION5X_GPIO_0_7 || irq > IRQ_ORION5X_GPIO_24_31);
orion_gpio_irq_handler((irq - IRQ_ORION5X_GPIO_0_7) << 3);
}
static int __initdata gpio0_irqs[4] = {
IRQ_ORION5X_GPIO_0_7,
IRQ_ORION5X_GPIO_8_15,
IRQ_ORION5X_GPIO_16_23,
IRQ_ORION5X_GPIO_24_31,
};
void __init orion5x_init_irq(void)
{
@@ -32,9 +29,6 @@ void __init orion5x_init_irq(void)
/*
* Initialize gpiolib for GPIOs 0-31.
*/
orion_gpio_init(0, 32, GPIO_VIRT_BASE, 0, IRQ_ORION5X_GPIO_START);
irq_set_chained_handler(IRQ_ORION5X_GPIO_0_7, gpio_irq_handler);
irq_set_chained_handler(IRQ_ORION5X_GPIO_8_15, gpio_irq_handler);
irq_set_chained_handler(IRQ_ORION5X_GPIO_16_23, gpio_irq_handler);
irq_set_chained_handler(IRQ_ORION5X_GPIO_24_31, gpio_irq_handler);
orion_gpio_init(NULL, 0, 32, (void __iomem *)GPIO_VIRT_BASE, 0,
IRQ_ORION5X_GPIO_START, gpio0_irqs);
}