19dd0b194SLennert Buytenhek /* 29dd0b194SLennert Buytenhek * arch/arm/mach-orion5x/irq.c 39dd0b194SLennert Buytenhek * 49dd0b194SLennert Buytenhek * Core IRQ functions for Marvell Orion System On Chip 59dd0b194SLennert Buytenhek * 69dd0b194SLennert Buytenhek * Maintainer: Tzachi Perelstein <tzachi@marvell.com> 79dd0b194SLennert Buytenhek * 89dd0b194SLennert Buytenhek * This file is licensed under the terms of the GNU General Public 99dd0b194SLennert Buytenhek * License version 2. This program is licensed "as is" without any 109dd0b194SLennert Buytenhek * warranty of any kind, whether express or implied. 119dd0b194SLennert Buytenhek */ 122f8163baSRussell King #include <linux/gpio.h> 139dd0b194SLennert Buytenhek #include <linux/kernel.h> 149dd0b194SLennert Buytenhek #include <linux/init.h> 159dd0b194SLennert Buytenhek #include <linux/irq.h> 16fced80c7SRussell King #include <linux/io.h> 17fdd8b079SNicolas Pitre #include <mach/bridge-regs.h> 186f088f1dSLennert Buytenhek #include <plat/irq.h> 199dd0b194SLennert Buytenhek #include "common.h" 209dd0b194SLennert Buytenhek 2107332318SLennert Buytenhek static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc) 229dd0b194SLennert Buytenhek { 239dd0b194SLennert Buytenhek BUG_ON(irq < IRQ_ORION5X_GPIO_0_7 || irq > IRQ_ORION5X_GPIO_24_31); 249dd0b194SLennert Buytenhek 2507332318SLennert Buytenhek orion_gpio_irq_handler((irq - IRQ_ORION5X_GPIO_0_7) << 3); 269dd0b194SLennert Buytenhek } 279dd0b194SLennert Buytenhek 2807332318SLennert Buytenhek void __init orion5x_init_irq(void) 299dd0b194SLennert Buytenhek { 3007332318SLennert Buytenhek orion_irq_init(0, (void __iomem *)MAIN_IRQ_MASK); 319dd0b194SLennert Buytenhek 329dd0b194SLennert Buytenhek /* 339eac6d0aSLennert Buytenhek * Initialize gpiolib for GPIOs 0-31. 349dd0b194SLennert Buytenhek */ 359eac6d0aSLennert Buytenhek orion_gpio_init(0, 32, GPIO_VIRT_BASE, 0, IRQ_ORION5X_GPIO_START); 366845664aSThomas Gleixner irq_set_chained_handler(IRQ_ORION5X_GPIO_0_7, gpio_irq_handler); 376845664aSThomas Gleixner irq_set_chained_handler(IRQ_ORION5X_GPIO_8_15, gpio_irq_handler); 386845664aSThomas Gleixner irq_set_chained_handler(IRQ_ORION5X_GPIO_16_23, gpio_irq_handler); 396845664aSThomas Gleixner irq_set_chained_handler(IRQ_ORION5X_GPIO_24_31, gpio_irq_handler); 409dd0b194SLennert Buytenhek } 41