Commit | Line | Data |
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aabe1885 DW |
1 | /* |
2 | * RTC driver for ppc_md RTC functions | |
3 | * | |
4 | * © 2007 Red Hat, Inc. | |
5 | * | |
6 | * Author: David Woodhouse <dwmw2@infradead.org> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/err.h> | |
16 | #include <linux/rtc.h> | |
17 | #include <linux/platform_device.h> | |
18 | #include <asm/machdep.h> | |
19 | ||
20 | static int ppc_rtc_read_time(struct device *dev, struct rtc_time *tm) | |
21 | { | |
22 | ppc_md.get_rtc_time(tm); | |
23 | return 0; | |
24 | } | |
25 | ||
26 | static int ppc_rtc_set_time(struct device *dev, struct rtc_time *tm) | |
27 | { | |
28 | return ppc_md.set_rtc_time(tm); | |
29 | } | |
30 | ||
31 | static const struct rtc_class_ops ppc_rtc_ops = { | |
32 | .set_time = ppc_rtc_set_time, | |
33 | .read_time = ppc_rtc_read_time, | |
34 | }; | |
35 | ||
36 | static struct rtc_device *rtc; | |
37 | static struct platform_device *ppc_rtc_pdev; | |
38 | ||
39 | static int __init ppc_rtc_init(void) | |
40 | { | |
41 | if (!ppc_md.get_rtc_time || !ppc_md.set_rtc_time) | |
42 | return -ENODEV; | |
43 | ||
44 | ppc_rtc_pdev = platform_device_register_simple("ppc-rtc", 0, NULL, 0); | |
45 | if (IS_ERR(ppc_rtc_pdev)) | |
46 | return PTR_ERR(ppc_rtc_pdev); | |
47 | ||
48 | rtc = rtc_device_register("ppc_md", &ppc_rtc_pdev->dev, | |
49 | &ppc_rtc_ops, THIS_MODULE); | |
50 | if (IS_ERR(rtc)) { | |
51 | platform_device_unregister(ppc_rtc_pdev); | |
52 | return PTR_ERR(rtc); | |
53 | } | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
58 | static void __exit ppc_rtc_exit(void) | |
59 | { | |
60 | rtc_device_unregister(rtc); | |
61 | platform_device_unregister(ppc_rtc_pdev); | |
62 | } | |
63 | ||
64 | module_init(ppc_rtc_init); | |
65 | module_exit(ppc_rtc_exit); | |
66 | ||
67 | MODULE_LICENSE("GPL"); | |
68 | MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>"); | |
69 | MODULE_DESCRIPTION("Generic RTC class driver for PowerPC"); |