1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Renesas Solutions Highlander R7780MP Support.
4 *
5 * Copyright (C) 2002 Atom Create Engineering Co., Ltd.
6 * Copyright (C) 2006 Paul Mundt
7 * Copyright (C) 2007 Magnus Damm
8 */
9 #include <linux/init.h>
10 #include <linux/irq.h>
11 #include <linux/io.h>
12 #include <mach/highlander.h>
13
14 enum {
15 UNUSED = 0,
16
17 /* board specific interrupt sources */
18 CF, /* Compact Flash */
19 TP, /* Touch panel */
20 SCIF1, /* FPGA SCIF1 */
21 SCIF0, /* FPGA SCIF0 */
22 SMBUS, /* SMBUS */
23 RTC, /* RTC Alarm */
24 AX88796, /* Ethernet controller */
25 PSW, /* Push Switch */
26
27 /* external bus connector */
28 EXT1, EXT2, EXT4, EXT5, EXT6,
29 };
30
31 static struct intc_vect vectors[] __initdata = {
32 INTC_IRQ(CF, IRQ_CF),
33 INTC_IRQ(TP, IRQ_TP),
34 INTC_IRQ(SCIF1, IRQ_SCIF1),
35 INTC_IRQ(SCIF0, IRQ_SCIF0),
36 INTC_IRQ(SMBUS, IRQ_SMBUS),
37 INTC_IRQ(RTC, IRQ_RTC),
38 INTC_IRQ(AX88796, IRQ_AX88796),
39 INTC_IRQ(PSW, IRQ_PSW),
40
41 INTC_IRQ(EXT1, IRQ_EXT1), INTC_IRQ(EXT2, IRQ_EXT2),
42 INTC_IRQ(EXT4, IRQ_EXT4), INTC_IRQ(EXT5, IRQ_EXT5),
43 INTC_IRQ(EXT6, IRQ_EXT6),
44 };
45
46 static struct intc_mask_reg mask_registers[] __initdata = {
47 { 0xa4000000, 0, 16, /* IRLMSK */
48 { SCIF0, SCIF1, RTC, 0, CF, 0, TP, SMBUS,
49 0, EXT6, EXT5, EXT4, EXT2, EXT1, PSW, AX88796 } },
50 };
51
52 static unsigned char irl2irq[HL_NR_IRL] __initdata = {
53 0, IRQ_CF, IRQ_TP, IRQ_SCIF1,
54 IRQ_SCIF0, IRQ_SMBUS, IRQ_RTC, IRQ_EXT6,
55 IRQ_EXT5, IRQ_EXT4, IRQ_EXT2, IRQ_EXT1,
56 0, IRQ_AX88796, IRQ_PSW,
57 };
58
59 static DECLARE_INTC_DESC(intc_desc, "r7780mp", vectors,
60 NULL, mask_registers, NULL, NULL);
61
highlander_plat_irq_setup(void)62 unsigned char * __init highlander_plat_irq_setup(void)
63 {
64 if ((__raw_readw(0xa4000700) & 0xf000) == 0x2000) {
65 printk(KERN_INFO "Using r7780mp interrupt controller.\n");
66 register_intc_controller(&intc_desc);
67 return irl2irq;
68 }
69
70 return NULL;
71 }
72
