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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
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/*
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* RTC driver for ppc_md RTC functions
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*
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* © 2007 Red Hat, Inc.
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*
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* Author: David Woodhouse <dwmw2@infradead.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/rtc.h>
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#include <linux/platform_device.h>
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#include <asm/machdep.h>
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static int ppc_rtc_read_time(struct device *dev, struct rtc_time *tm)
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{
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ppc_md.get_rtc_time(tm);
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return 0;
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}
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static int ppc_rtc_set_time(struct device *dev, struct rtc_time *tm)
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{
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return ppc_md.set_rtc_time(tm);
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}
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static const struct rtc_class_ops ppc_rtc_ops = {
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.set_time = ppc_rtc_set_time,
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.read_time = ppc_rtc_read_time,
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};
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static struct rtc_device *rtc;
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static struct platform_device *ppc_rtc_pdev;
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static int __init ppc_rtc_init(void)
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{
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if (!ppc_md.get_rtc_time || !ppc_md.set_rtc_time)
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return -ENODEV;
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ppc_rtc_pdev = platform_device_register_simple("ppc-rtc", 0, NULL, 0);
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if (IS_ERR(ppc_rtc_pdev))
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return PTR_ERR(ppc_rtc_pdev);
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rtc = rtc_device_register("ppc_md", &ppc_rtc_pdev->dev,
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&ppc_rtc_ops, THIS_MODULE);
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if (IS_ERR(rtc)) {
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platform_device_unregister(ppc_rtc_pdev);
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return PTR_ERR(rtc);
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}
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return 0;
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}
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static void __exit ppc_rtc_exit(void)
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{
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rtc_device_unregister(rtc);
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platform_device_unregister(ppc_rtc_pdev);
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}
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module_init(ppc_rtc_init);
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module_exit(ppc_rtc_exit);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
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MODULE_DESCRIPTION("Generic RTC class driver for PowerPC");
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