1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Renesas Solutions Highlander R7780RP-1 Support.
4  *
5  * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
6  * Copyright (C) 2006  Paul Mundt
7  * Copyright (C) 2008  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 
19 	AX88796,          /* Ethernet controller */
20 	PSW,              /* Push Switch */
21 	CF,               /* Compact Flash */
22 
23 	PCI_A,
24 	PCI_B,
25 	PCI_C,
26 	PCI_D,
27 };
28 
29 static struct intc_vect vectors[] __initdata = {
30 	INTC_IRQ(PCI_A, 65), /* dirty: overwrite cpu vectors for pci */
31 	INTC_IRQ(PCI_B, 66),
32 	INTC_IRQ(PCI_C, 67),
33 	INTC_IRQ(PCI_D, 68),
34 	INTC_IRQ(CF, IRQ_CF),
35 	INTC_IRQ(PSW, IRQ_PSW),
36 	INTC_IRQ(AX88796, IRQ_AX88796),
37 };
38 
39 static struct intc_mask_reg mask_registers[] __initdata = {
40 	{ 0xa5000000, 0, 16, /* IRLMSK */
41 	  { PCI_A, PCI_B, PCI_C, PCI_D, CF, 0, 0, 0,
42 	    0, 0, 0, 0, 0, 0, PSW, AX88796 } },
43 };
44 
45 static unsigned char irl2irq[HL_NR_IRL] __initdata = {
46 	65, 66, 67, 68,
47 	IRQ_CF, 0, 0, 0,
48 	0, 0, 0, 0,
49 	IRQ_AX88796, IRQ_PSW
50 };
51 
52 static DECLARE_INTC_DESC(intc_desc, "r7780rp", vectors,
53 			 NULL, mask_registers, NULL, NULL);
54 
55 unsigned char * __init highlander_plat_irq_setup(void)
56 {
57 	if (__raw_readw(0xa5000600)) {
58 		printk(KERN_INFO "Using r7780rp interrupt controller.\n");
59 		register_intc_controller(&intc_desc);
60 		return irl2irq;
61 	}
62 
63 	return NULL;
64 }
65