1 /*
2  * Renesas Solutions Highlander R7780RP-1 Support.
3  *
4  * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
5  * Copyright (C) 2006  Paul Mundt
6  * Copyright (C) 2008  Magnus Damm
7  *
8  * This file is subject to the terms and conditions of the GNU General Public
9  * License.  See the file "COPYING" in the main directory of this archive
10  * for more details.
11  */
12 #include <linux/init.h>
13 #include <linux/irq.h>
14 #include <linux/io.h>
15 #include <mach/highlander.h>
16 
17 enum {
18 	UNUSED = 0,
19 
20 	/* board specific interrupt sources */
21 
22 	AX88796,          /* Ethernet controller */
23 	PSW,              /* Push Switch */
24 	CF,               /* Compact Flash */
25 
26 	PCI_A,
27 	PCI_B,
28 	PCI_C,
29 	PCI_D,
30 };
31 
32 static struct intc_vect vectors[] __initdata = {
33 	INTC_IRQ(PCI_A, 65), /* dirty: overwrite cpu vectors for pci */
34 	INTC_IRQ(PCI_B, 66),
35 	INTC_IRQ(PCI_C, 67),
36 	INTC_IRQ(PCI_D, 68),
37 	INTC_IRQ(CF, IRQ_CF),
38 	INTC_IRQ(PSW, IRQ_PSW),
39 	INTC_IRQ(AX88796, IRQ_AX88796),
40 };
41 
42 static struct intc_mask_reg mask_registers[] __initdata = {
43 	{ 0xa5000000, 0, 16, /* IRLMSK */
44 	  { PCI_A, PCI_B, PCI_C, PCI_D, CF, 0, 0, 0,
45 	    0, 0, 0, 0, 0, 0, PSW, AX88796 } },
46 };
47 
48 static unsigned char irl2irq[HL_NR_IRL] __initdata = {
49 	65, 66, 67, 68,
50 	IRQ_CF, 0, 0, 0,
51 	0, 0, 0, 0,
52 	IRQ_AX88796, IRQ_PSW
53 };
54 
55 static DECLARE_INTC_DESC(intc_desc, "r7780rp", vectors,
56 			 NULL, mask_registers, NULL, NULL);
57 
58 unsigned char * __init highlander_plat_irq_setup(void)
59 {
60 	if (__raw_readw(0xa5000600)) {
61 		printk(KERN_INFO "Using r7780rp interrupt controller.\n");
62 		register_intc_controller(&intc_desc);
63 		return irl2irq;
64 	}
65 
66 	return NULL;
67 }
68