1/*
2 *  NEC VR4100 series SIU platform device.
3 *
4 *  Copyright (C) 2007-2008  Yoichi Yuasa <yuasa@linux-mips.org>
5 *
6 *  This program is free software; you can redistribute it and/or modify
7 *  it under the terms of the GNU General Public License as published by
8 *  the Free Software Foundation; either version 2 of the License, or
9 *  (at your option) any later version.
10 *
11 *  This program is distributed in the hope that it will be useful,
12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 *  GNU General Public License for more details.
15 *
16 *  You should have received a copy of the GNU General Public License
17 *  along with this program; if not, write to the Free Software
18 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
19 */
20#include <linux/errno.h>
21#include <linux/init.h>
22#include <linux/ioport.h>
23#include <linux/platform_device.h>
24#include <linux/serial_core.h>
25#include <linux/irq.h>
26
27#include <asm/cpu.h>
28#include <asm/vr41xx/siu.h>
29
30static unsigned int siu_type1_ports[SIU_PORTS_MAX] __initdata = {
31	PORT_VR41XX_SIU,
32	PORT_UNKNOWN,
33};
34
35static struct resource siu_type1_resource[] __initdata = {
36	{
37		.start	= 0x0c000000,
38		.end	= 0x0c00000a,
39		.flags	= IORESOURCE_MEM,
40	},
41	{
42		.start	= SIU_IRQ,
43		.end	= SIU_IRQ,
44		.flags	= IORESOURCE_IRQ,
45	},
46};
47
48static unsigned int siu_type2_ports[SIU_PORTS_MAX] __initdata = {
49	PORT_VR41XX_SIU,
50	PORT_VR41XX_DSIU,
51};
52
53static struct resource siu_type2_resource[] __initdata = {
54	{
55		.start	= 0x0f000800,
56		.end	= 0x0f00080a,
57		.flags	= IORESOURCE_MEM,
58	},
59	{
60		.start	= 0x0f000820,
61		.end	= 0x0f000829,
62		.flags	= IORESOURCE_MEM,
63	},
64	{
65		.start	= SIU_IRQ,
66		.end	= SIU_IRQ,
67		.flags	= IORESOURCE_IRQ,
68	},
69	{
70		.start	= DSIU_IRQ,
71		.end	= DSIU_IRQ,
72		.flags	= IORESOURCE_IRQ,
73	},
74};
75
76static int __init vr41xx_siu_add(void)
77{
78	struct platform_device *pdev;
79	struct resource *res;
80	unsigned int num;
81	int retval;
82
83	pdev = platform_device_alloc("SIU", -1);
84	if (!pdev)
85		return -ENOMEM;
86
87	switch (current_cpu_type()) {
88	case CPU_VR4111:
89	case CPU_VR4121:
90		pdev->dev.platform_data = siu_type1_ports;
91		res = siu_type1_resource;
92		num = ARRAY_SIZE(siu_type1_resource);
93		break;
94	case CPU_VR4122:
95	case CPU_VR4131:
96	case CPU_VR4133:
97		pdev->dev.platform_data = siu_type2_ports;
98		res = siu_type2_resource;
99		num = ARRAY_SIZE(siu_type2_resource);
100		break;
101	default:
102		retval = -ENODEV;
103		goto err_free_device;
104	}
105
106	retval = platform_device_add_resources(pdev, res, num);
107	if (retval)
108		goto err_free_device;
109
110	retval = platform_device_add(pdev);
111	if (retval)
112		goto err_free_device;
113
114	return 0;
115
116err_free_device:
117	platform_device_put(pdev);
118
119	return retval;
120}
121device_initcall(vr41xx_siu_add);
122
123void __init vr41xx_siu_setup(void)
124{
125	struct uart_port port;
126	struct resource *res;
127	unsigned int *type;
128	int i;
129
130	switch (current_cpu_type()) {
131	case CPU_VR4111:
132	case CPU_VR4121:
133		type = siu_type1_ports;
134		res = siu_type1_resource;
135		break;
136	case CPU_VR4122:
137	case CPU_VR4131:
138	case CPU_VR4133:
139		type = siu_type2_ports;
140		res = siu_type2_resource;
141		break;
142	default:
143		return;
144	}
145
146	for (i = 0; i < SIU_PORTS_MAX; i++) {
147		port.line = i;
148		port.type = type[i];
149		if (port.type == PORT_UNKNOWN)
150			break;
151		port.mapbase = res[i].start;
152		port.membase = (unsigned char __iomem *)KSEG1ADDR(res[i].start);
153		vr41xx_siu_early_setup(&port);
154	}
155}
156