linux/drivers/rtc/rtc-ppc.c
David Woodhouse aabe188565 rtc: class driver for ppc_md RTC functions
This hooks up the platform-specific [gs]et_rtc_time functions so that
kernels using CONFIG_RTC_CLASS have RTC support on most PowerPC platforms.

A new driver, and one which we've been shipping in Fedora for a while
already, since otherwise RTC support breaks.

[akpm@linux-foundation.org: fix Kconfig indenting]
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: David Brownell <david-b@pacbell.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-06 11:29:13 -07:00

69 lines
1.6 KiB
C

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