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
highlander_plat_irq_setup(void)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