1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * SDK7786 FPGA IRQ Controller Support. 4 * 5 * Copyright (C) 2010 Matt Fleming 6 * Copyright (C) 2010 Paul Mundt 7 */ 8 #include <linux/irq.h> 9 #include <mach/fpga.h> 10 #include <mach/irq.h> 11 12 enum { 13 ATA_IRQ_BIT = 1, 14 SPI_BUSY_BIT = 2, 15 LIRQ5_BIT = 3, 16 LIRQ6_BIT = 4, 17 LIRQ7_BIT = 5, 18 LIRQ8_BIT = 6, 19 KEY_IRQ_BIT = 7, 20 PEN_IRQ_BIT = 8, 21 ETH_IRQ_BIT = 9, 22 RTC_ALARM_BIT = 10, 23 CRYSTAL_FAIL_BIT = 12, 24 ETH_PME_BIT = 14, 25 }; 26 27 void __init sdk7786_init_irq(void) 28 { 29 unsigned int tmp; 30 31 /* Enable priority encoding for all IRLs */ 32 fpga_write_reg(fpga_read_reg(INTMSR) | 0x0303, INTMSR); 33 34 /* Clear FPGA interrupt status registers */ 35 fpga_write_reg(0x0000, INTASR); 36 fpga_write_reg(0x0000, INTBSR); 37 38 /* Unmask FPGA interrupts */ 39 tmp = fpga_read_reg(INTAMR); 40 tmp &= ~(1 << ETH_IRQ_BIT); 41 fpga_write_reg(tmp, INTAMR); 42 43 plat_irq_setup_pins(IRQ_MODE_IRL7654_MASK); 44 plat_irq_setup_pins(IRQ_MODE_IRL3210_MASK); 45 } 46