[POWERPC] Add powerpc get/set_rtc_time interface to new generic rtc class
Add powerpc get/set_rtc_time interface to new generic rtc class. This
abstracts rtc chip specific code from the platform code for rtc-over-i2c
platforms. Specific RTC chip support is now configured under
Device Drivers -> Real Time Clock. Setting time of day from the RTC
on startup is also configurable.
this time without the potentially platform breaking initcall.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 7a3c3f7..b4ed362 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -1048,6 +1048,48 @@
set_dec(tb_ticks_per_jiffy);
}
+#ifdef CONFIG_RTC_CLASS
+static int set_rtc_class_time(struct rtc_time *tm)
+{
+ int err;
+ struct class_device *class_dev =
+ rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
+
+ if (class_dev == NULL)
+ return -ENODEV;
+
+ err = rtc_set_time(class_dev, tm);
+
+ rtc_class_close(class_dev);
+
+ return 0;
+}
+
+static void get_rtc_class_time(struct rtc_time *tm)
+{
+ int err;
+ struct class_device *class_dev =
+ rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
+
+ if (class_dev == NULL)
+ return;
+
+ err = rtc_read_time(class_dev, tm);
+
+ rtc_class_close(class_dev);
+
+ return;
+}
+
+int __init rtc_class_hookup(void)
+{
+ ppc_md.get_rtc_time = get_rtc_class_time;
+ ppc_md.set_rtc_time = set_rtc_class_time;
+
+ return 0;
+}
+#endif /* CONFIG_RTC_CLASS */
+
#define FEBRUARY 2
#define STARTOFTIME 1970