| David Woodhouse | aabe188 | 2008-06-05 22:46:50 -0700 | [diff] [blame] | 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"); |