1/* 2 * SDK7786 FPGA IRQ Controller Support. 3 * 4 * Copyright (C) 2010 Matt Fleming 5 * Copyright (C) 2010 Paul Mundt 6 * 7 * This file is subject to the terms and conditions of the GNU General Public 8 * License. See the file "COPYING" in the main directory of this archive 9 * for more details. 10 */ 11#include <linux/irq.h> 12#include <mach/fpga.h> 13#include <mach/irq.h> 14 15enum { 16 ATA_IRQ_BIT = 1, 17 SPI_BUSY_BIT = 2, 18 LIRQ5_BIT = 3, 19 LIRQ6_BIT = 4, 20 LIRQ7_BIT = 5, 21 LIRQ8_BIT = 6, 22 KEY_IRQ_BIT = 7, 23 PEN_IRQ_BIT = 8, 24 ETH_IRQ_BIT = 9, 25 RTC_ALARM_BIT = 10, 26 CRYSTAL_FAIL_BIT = 12, 27 ETH_PME_BIT = 14, 28}; 29 30void __init sdk7786_init_irq(void) 31{ 32 unsigned int tmp; 33 34 /* Enable priority encoding for all IRLs */ 35 fpga_write_reg(fpga_read_reg(INTMSR) | 0x0303, INTMSR); 36 37 /* Clear FPGA interrupt status registers */ 38 fpga_write_reg(0x0000, INTASR); 39 fpga_write_reg(0x0000, INTBSR); 40 41 /* Unmask FPGA interrupts */ 42 tmp = fpga_read_reg(INTAMR); 43 tmp &= ~(1 << ETH_IRQ_BIT); 44 fpga_write_reg(tmp, INTAMR); 45 46 plat_irq_setup_pins(IRQ_MODE_IRL7654_MASK); 47 plat_irq_setup_pins(IRQ_MODE_IRL3210_MASK); 48} 49