1/*
2 *  NEC VR4100 series GIU platform device.
3 *
4 *  Copyright (C) 2007	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/smp.h>
23#include <linux/ioport.h>
24#include <linux/platform_device.h>
25
26#include <asm/cpu.h>
27#include <asm/vr41xx/giu.h>
28#include <asm/vr41xx/irq.h>
29
30static struct resource giu_50pins_pullupdown_resource[] __initdata = {
31	{
32		.start	= 0x0b000100,
33		.end	= 0x0b00011f,
34		.flags	= IORESOURCE_MEM,
35	},
36	{
37		.start	= 0x0b0002e0,
38		.end	= 0x0b0002e3,
39		.flags	= IORESOURCE_MEM,
40	},
41	{
42		.start	= GIUINT_IRQ,
43		.end	= GIUINT_IRQ,
44		.flags	= IORESOURCE_IRQ,
45	},
46};
47
48static struct resource giu_36pins_resource[] __initdata = {
49	{
50		.start	= 0x0f000140,
51		.end	= 0x0f00015f,
52		.flags	= IORESOURCE_MEM,
53	},
54	{
55		.start	= GIUINT_IRQ,
56		.end	= GIUINT_IRQ,
57		.flags	= IORESOURCE_IRQ,
58	},
59};
60
61static struct resource giu_48pins_resource[] __initdata = {
62	{
63		.start	= 0x0f000140,
64		.end	= 0x0f000167,
65		.flags	= IORESOURCE_MEM,
66	},
67	{
68		.start	= GIUINT_IRQ,
69		.end	= GIUINT_IRQ,
70		.flags	= IORESOURCE_IRQ,
71	},
72};
73
74static int __init vr41xx_giu_add(void)
75{
76	struct platform_device *pdev;
77	struct resource *res;
78	unsigned int num;
79	int retval;
80
81	pdev = platform_device_alloc("GIU", -1);
82	if (!pdev)
83		return -ENOMEM;
84
85	switch (current_cpu_type()) {
86	case CPU_VR4111:
87	case CPU_VR4121:
88		pdev->id = GPIO_50PINS_PULLUPDOWN;
89		res = giu_50pins_pullupdown_resource;
90		num = ARRAY_SIZE(giu_50pins_pullupdown_resource);
91		break;
92	case CPU_VR4122:
93	case CPU_VR4131:
94		pdev->id = GPIO_36PINS;
95		res = giu_36pins_resource;
96		num = ARRAY_SIZE(giu_36pins_resource);
97		break;
98	case CPU_VR4133:
99		pdev->id = GPIO_48PINS_EDGE_SELECT;
100		res = giu_48pins_resource;
101		num = ARRAY_SIZE(giu_48pins_resource);
102		break;
103	default:
104		retval = -ENODEV;
105		goto err_free_device;
106	}
107
108	retval = platform_device_add_resources(pdev, res, num);
109	if (retval)
110		goto err_free_device;
111
112	retval = platform_device_add(pdev);
113	if (retval)
114		goto err_free_device;
115
116	return 0;
117
118err_free_device:
119	platform_device_put(pdev);
120
121	return retval;
122}
123device_initcall(vr41xx_giu_add);
124