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
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