m68k: Hook up rtc-generic
m68k has been a long time user of the generic RTC abstraction, so hook up
rtc-generic:
- Create the "rtc-generic" platform device if mach_hwclk is set,
- Add checks for mach_hwclk, in anticipation of RTC chip drivers being moved
to drivers/rtc/.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
diff --git a/arch/m68k/include/asm/rtc.h b/arch/m68k/include/asm/rtc.h
index 5d3e038..a4d08ea 100644
--- a/arch/m68k/include/asm/rtc.h
+++ b/arch/m68k/include/asm/rtc.h
@@ -36,13 +36,16 @@
* RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated
* by the RTC when initially set to a non-zero value.
*/
- mach_hwclk(0, time);
+ if (mach_hwclk)
+ mach_hwclk(0, time);
return RTC_24H;
}
static inline int set_rtc_time(struct rtc_time *time)
{
- return mach_hwclk(1, time);
+ if (mach_hwclk)
+ return mach_hwclk(1, time);
+ return -EINVAL;
}
static inline unsigned int get_rtc_ss(void)
diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c
index 7db4159..54d9807 100644
--- a/arch/m68k/kernel/time.c
+++ b/arch/m68k/kernel/time.c
@@ -18,6 +18,7 @@
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/rtc.h>
+#include <linux/platform_device.h>
#include <asm/machdep.h>
#include <asm/io.h>
@@ -159,3 +160,20 @@
}
EXPORT_SYMBOL(do_settimeofday);
+
+
+static int __init rtc_init(void)
+{
+ struct platform_device *pdev;
+
+ if (!mach_hwclk)
+ 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);
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 13df513..5aab5b9 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -692,7 +692,7 @@
tristate "Generic RTC support"
# Please consider writing a new RTC driver instead of using the generic
# RTC abstraction
- depends on PARISC
+ depends on PARISC || M68K
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