diff options
Diffstat (limited to 'arch/arm/mach-orion5x/irq.c')
| -rw-r--r-- | arch/arm/mach-orion5x/irq.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/mach-orion5x/irq.c b/arch/arm/mach-orion5x/irq.c new file mode 100644 index 00000000..b1b45fff --- /dev/null +++ b/arch/arm/mach-orion5x/irq.c @@ -0,0 +1,40 @@ +/* + * arch/arm/mach-orion5x/irq.c + * + * Core IRQ functions for Marvell Orion System On Chip + * + * Maintainer: Tzachi Perelstein <tzachi@marvell.com> + * + * 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/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); +} + +void __init orion5x_init_irq(void) +{ + orion_irq_init(0, (void __iomem *)MAIN_IRQ_MASK); + + /* + * 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); +} |