1 /* 2 * linux/arch/sh/boards/se/7780/irq.c 3 * 4 * Copyright (C) 2006,2007 Nobuhiro Iwamatsu 5 * 6 * Hitachi UL SolutionEngine 7780 Support. 7 * 8 * This file is subject to the terms and conditions of the GNU General Public 9 * License. See the file "COPYING" in the main directory of this archive 10 * for more details. 11 */ 12 #include <linux/init.h> 13 #include <linux/irq.h> 14 #include <linux/interrupt.h> 15 #include <asm/irq.h> 16 #include <asm/io.h> 17 #include <mach-se/mach/se7780.h> 18 19 /* 20 * Initialize IRQ setting 21 */ 22 void __init init_se7780_IRQ(void) 23 { 24 /* enable all interrupt at FPGA */ 25 ctrl_outw(0, FPGA_INTMSK1); 26 /* mask SM501 interrupt */ 27 ctrl_outw((ctrl_inw(FPGA_INTMSK1) | 0x0002), FPGA_INTMSK1); 28 /* enable all interrupt at FPGA */ 29 ctrl_outw(0, FPGA_INTMSK2); 30 31 /* set FPGA INTSEL register */ 32 /* FPGA + 0x06 */ 33 ctrl_outw( ((IRQPIN_SM501 << IRQPOS_SM501) | 34 (IRQPIN_SMC91CX << IRQPOS_SMC91CX)), FPGA_INTSEL1); 35 36 /* FPGA + 0x08 */ 37 ctrl_outw(((IRQPIN_EXTINT4 << IRQPOS_EXTINT4) | 38 (IRQPIN_EXTINT3 << IRQPOS_EXTINT3) | 39 (IRQPIN_EXTINT2 << IRQPOS_EXTINT2) | 40 (IRQPIN_EXTINT1 << IRQPOS_EXTINT1)), FPGA_INTSEL2); 41 42 /* FPGA + 0x0A */ 43 ctrl_outw((IRQPIN_PCCPW << IRQPOS_PCCPW), FPGA_INTSEL3); 44 45 plat_irq_setup_pins(IRQ_MODE_IRQ); /* install handlers for IRQ0-7 */ 46 } 47