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
15 enum {
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
sdk7786_init_irq(void)30 void __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