1/*
2 *  NEC VR4100 series RTC 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/irq.h>
28
29static struct resource rtc_type1_resource[] __initdata = {
30	{
31		.start	= 0x0b0000c0,
32		.end	= 0x0b0000df,
33		.flags	= IORESOURCE_MEM,
34	},
35	{
36		.start	= 0x0b0001c0,
37		.end	= 0x0b0001df,
38		.flags	= IORESOURCE_MEM,
39	},
40	{
41		.start	= ELAPSEDTIME_IRQ,
42		.end	= ELAPSEDTIME_IRQ,
43		.flags	= IORESOURCE_IRQ,
44	},
45	{
46		.start	= RTCLONG1_IRQ,
47		.end	= RTCLONG1_IRQ,
48		.flags	= IORESOURCE_IRQ,
49	},
50};
51
52static struct resource rtc_type2_resource[] __initdata = {
53	{
54		.start	= 0x0f000100,
55		.end	= 0x0f00011f,
56		.flags	= IORESOURCE_MEM,
57	},
58	{
59		.start	= 0x0f000120,
60		.end	= 0x0f00013f,
61		.flags	= IORESOURCE_MEM,
62	},
63	{
64		.start	= ELAPSEDTIME_IRQ,
65		.end	= ELAPSEDTIME_IRQ,
66		.flags	= IORESOURCE_IRQ,
67	},
68	{
69		.start	= RTCLONG1_IRQ,
70		.end	= RTCLONG1_IRQ,
71		.flags	= IORESOURCE_IRQ,
72	},
73};
74
75static int __init vr41xx_rtc_add(void)
76{
77	struct platform_device *pdev;
78	struct resource *res;
79	unsigned int num;
80	int retval;
81
82	pdev = platform_device_alloc("RTC", -1);
83	if (!pdev)
84		return -ENOMEM;
85
86	switch (current_cpu_type()) {
87	case CPU_VR4111:
88	case CPU_VR4121:
89		res = rtc_type1_resource;
90		num = ARRAY_SIZE(rtc_type1_resource);
91		break;
92	case CPU_VR4122:
93	case CPU_VR4131:
94	case CPU_VR4133:
95		res = rtc_type2_resource;
96		num = ARRAY_SIZE(rtc_type2_resource);
97		break;
98	default:
99		retval = -ENODEV;
100		goto err_free_device;
101	}
102
103	retval = platform_device_add_resources(pdev, res, num);
104	if (retval)
105		goto err_free_device;
106
107	retval = platform_device_add(pdev);
108	if (retval)
109		goto err_free_device;
110
111	return 0;
112
113err_free_device:
114	platform_device_put(pdev);
115
116	return retval;
117}
118device_initcall(vr41xx_rtc_add);
119