/* * 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/irq.h> #include <linux/io.h> #include <plat/orion-gpio.h> #include <plat/irq.h> #include <asm/exception.h> #include "bridge-regs.h" #include "common.h" 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, }; static asmlinkage void __exception_irq_entry orion5x_legacy_handle_irq(struct pt_regs *regs) { u32 stat; stat = readl_relaxed(MAIN_IRQ_CAUSE); stat &= readl_relaxed(MAIN_IRQ_MASK); if (stat) { unsigned int hwirq = 1 + __fls(stat); handle_IRQ(hwirq, regs); return; } } void __init orion5x_init_irq(void) { orion_irq_init(1, MAIN_IRQ_MASK); set_handle_irq(orion5x_legacy_handle_irq); /* * Initialize gpiolib for GPIOs 0-31. */ orion_gpio_init(NULL, 0, 32, GPIO_VIRT_BASE, 0, IRQ_ORION5X_GPIO_START, gpio0_irqs); }