1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * linux/arch/sh/boards/renesas/sdk7780/irq.c
4  *
5  * Renesas Technology Europe SDK7780 Support.
6  *
7  * Copyright (C) 2008  Nicholas Beck <nbeck@mpc-data.co.uk>
8  */
9 #include <linux/init.h>
10 #include <linux/irq.h>
11 #include <linux/io.h>
12 #include <mach/sdk7780.h>
13 
14 enum {
15 	UNUSED = 0,
16 	/* board specific interrupt sources */
17 	SMC91C111,	/* Ethernet controller */
18 };
19 
20 static struct intc_vect fpga_vectors[] __initdata = {
21 	INTC_IRQ(SMC91C111, IRQ_ETHERNET),
22 };
23 
24 static struct intc_mask_reg fpga_mask_registers[] __initdata = {
25 	{ 0, FPGA_IRQ0MR, 16,
26 	  { 0, 0, 0, 0, 0, 0, 0, 0,
27 	    0, 0, 0, SMC91C111, 0, 0, 0, 0 } },
28 };
29 
30 static DECLARE_INTC_DESC(fpga_intc_desc, "sdk7780-irq", fpga_vectors,
31 			 NULL, fpga_mask_registers, NULL, NULL);
32 
init_sdk7780_IRQ(void)33 void __init init_sdk7780_IRQ(void)
34 {
35 	printk(KERN_INFO "Using SDK7780 interrupt controller.\n");
36 
37 	__raw_writew(0xFFFF, FPGA_IRQ0MR);
38 	/* Setup IRL 0-3 */
39 	__raw_writew(0x0003, FPGA_IMSR);
40 	plat_irq_setup_pins(IRQ_MODE_IRL3210);
41 
42 	register_intc_controller(&fpga_intc_desc);
43 }
44