1 /*
2 * NEC VR4100 series RTC platform device.
3 *
4 * Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
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
25 #include <asm/cpu.h>
26 #include <asm/vr41xx/irq.h>
27
28 static struct resource rtc_type1_resource[] __initdata = {
29 {
30 .start = 0x0b0000c0,
31 .end = 0x0b0000df,
32 .flags = IORESOURCE_MEM,
33 },
34 {
35 .start = 0x0b0001c0,
36 .end = 0x0b0001df,
37 .flags = IORESOURCE_MEM,
38 },
39 {
40 .start = ELAPSEDTIME_IRQ,
41 .end = ELAPSEDTIME_IRQ,
42 .flags = IORESOURCE_IRQ,
43 },
44 {
45 .start = RTCLONG1_IRQ,
46 .end = RTCLONG1_IRQ,
47 .flags = IORESOURCE_IRQ,
48 },
49 };
50
51 static struct resource rtc_type2_resource[] __initdata = {
52 {
53 .start = 0x0f000100,
54 .end = 0x0f00011f,
55 .flags = IORESOURCE_MEM,
56 },
57 {
58 .start = 0x0f000120,
59 .end = 0x0f00013f,
60 .flags = IORESOURCE_MEM,
61 },
62 {
63 .start = ELAPSEDTIME_IRQ,
64 .end = ELAPSEDTIME_IRQ,
65 .flags = IORESOURCE_IRQ,
66 },
67 {
68 .start = RTCLONG1_IRQ,
69 .end = RTCLONG1_IRQ,
70 .flags = IORESOURCE_IRQ,
71 },
72 };
73
vr41xx_rtc_add(void)74 static int __init vr41xx_rtc_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("RTC", -1);
82 if (!pdev)
83 return -ENOMEM;
84
85 switch (current_cpu_type()) {
86 case CPU_VR4111:
87 case CPU_VR4121:
88 res = rtc_type1_resource;
89 num = ARRAY_SIZE(rtc_type1_resource);
90 break;
91 case CPU_VR4122:
92 case CPU_VR4131:
93 case CPU_VR4133:
94 res = rtc_type2_resource;
95 num = ARRAY_SIZE(rtc_type2_resource);
96 break;
97 default:
98 retval = -ENODEV;
99 goto err_free_device;
100 }
101
102 retval = platform_device_add_resources(pdev, res, num);
103 if (retval)
104 goto err_free_device;
105
106 retval = platform_device_add(pdev);
107 if (retval)
108 goto err_free_device;
109
110 return 0;
111
112 err_free_device:
113 platform_device_put(pdev);
114
115 return retval;
116 }
117 device_initcall(vr41xx_rtc_add);
118