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powerpc: Hook up rtc-generic, and kill rtc-ppc

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PowerPC has been a long time user of the generic RTC abstraction, so hook up
rtc-generic:
  - Create the "rtc-generic" platform device if ppc_md.get_rtc_time is set,
  - Kill rtc-ppc, as rtc-generic offers the same functionality in a more
    generic way, and supports autoloading through udev.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: David Woodhouse <David.Woodhouse@intel.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
This commit is contained in:
Geert Uytterhoeven 2009-02-19 16:50:46 +01:00 committed by Kyle McMartin
parent 2ceb3ad705
commit bcd68a70cb
4 changed files with 17 additions and 79 deletions
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16
arch/powerpc/kernel/time.c
View File

@ -1127,3 +1127,19 @@ void div128_by_32(u64 dividend_high, u64 dividend_low,
dr->result_low = ((u64)y << 32) + z;
}
static int __init rtc_init(void)
{
struct platform_device *pdev;
if (!ppc_md.get_rtc_time)
return -ENODEV;
pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0);
if (IS_ERR(pdev))
return PTR_ERR(pdev);
return 0;
}
module_init(rtc_init);

10
drivers/rtc/Kconfig
View File

@ -692,20 +692,12 @@ config RTC_DRV_GENERIC
tristate "Generic RTC support"
# Please consider writing a new RTC driver instead of using the generic
# RTC abstraction
depends on PARISC || M68K
depends on PARISC || M68K || PPC
help
Say Y or M here to enable RTC support on systems using the generic
RTC abstraction. If you do not know what you are doing, you should
just say Y.
config RTC_DRV_PPC
tristate "PowerPC machine dependent RTC support"
depends on PPC
help
The PowerPC kernel has machine-specific functions for accessing
the RTC. This exposes that functionality through the generic RTC
class.
config RTC_DRV_PXA
tristate "PXA27x/PXA3xx"
depends on ARCH_PXA

1
drivers/rtc/Makefile
View File

@ -57,7 +57,6 @@ obj-$(CONFIG_RTC_DRV_PCF8583) += rtc-pcf8583.o
obj-$(CONFIG_RTC_DRV_PL030) += rtc-pl030.o
obj-$(CONFIG_RTC_DRV_PL031) += rtc-pl031.o
obj-$(CONFIG_RTC_DRV_GENERIC) += rtc-generic.o
obj-$(CONFIG_RTC_DRV_PPC) += rtc-ppc.o
obj-$(CONFIG_RTC_DRV_PXA) += rtc-pxa.o
obj-$(CONFIG_RTC_DRV_R9701) += rtc-r9701.o
obj-$(CONFIG_RTC_DRV_RS5C313) += rtc-rs5c313.o

69
drivers/rtc/rtc-ppc.c
View File

@ -1,69 +0,0 @@
/*
* 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");