1 /*
2 * linux/arch/sh/boards/se/7721/irq.c
3 *
4 * Copyright (C) 2008 Renesas Solutions Corp.
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 */
10 #include <linux/init.h>
11 #include <linux/irq.h>
12 #include <linux/interrupt.h>
13 #include <linux/io.h>
14 #include <mach-se/mach/se7721.h>
15
16 enum {
17 UNUSED = 0,
18
19 /* board specific interrupt sources */
20 MRSHPC,
21 };
22
23 static struct intc_vect vectors[] __initdata = {
24 INTC_IRQ(MRSHPC, MRSHPC_IRQ0),
25 };
26
27 static struct intc_prio_reg prio_registers[] __initdata = {
28 { FPGA_ILSR6, 0, 8, 4, /* IRLMSK */
29 { 0, MRSHPC } },
30 };
31
32 static DECLARE_INTC_DESC(intc_desc, "SE7721", vectors,
33 NULL, NULL, prio_registers, NULL);
34
35 /*
36 * Initialize IRQ setting
37 */
init_se7721_IRQ(void)38 void __init init_se7721_IRQ(void)
39 {
40 /* PPCR */
41 __raw_writew(__raw_readw(0xa4050118) & ~0x00ff, 0xa4050118);
42
43 register_intc_controller(&intc_desc);
44 intc_set_priority(MRSHPC_IRQ0, 0xf - MRSHPC_IRQ0);
45 }
46