[POWERPC] Implement {read,update}_persistent_clock

With these functions implemented we cooperate better with the generic
timekeeping code.  This obsoletes the need for the timer sysdev as a bonus.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

2 files changed, 0 insertions, 86 deletions

diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
index ed41dc0a310..b0ea8e9495e 100644
--- a/arch/powerpc/sysdev/Makefile
+++ b/arch/powerpc/sysdev/Makefile
@@ -21,11 +21,6 @@ obj-$(CONFIG_MV64X60)		+= $(mv64x60-y) mv64x60_pic.o mv64x60_dev.o \
 obj-$(CONFIG_RTC_DRV_CMOS)	+= rtc_cmos_setup.o
 obj-$(CONFIG_AXON_RAM)		+= axonram.o
 
-# contains only the suspend handler for time
-ifeq ($(CONFIG_RTC_CLASS),)
-obj-$(CONFIG_PM)		+= timer.o
-endif
-
 ifeq ($(CONFIG_PPC_MERGE),y)
 obj-$(CONFIG_PPC_INDIRECT_PCI)	+= indirect_pci.o
 obj-$(CONFIG_PPC_I8259)		+= i8259.o
diff --git a/arch/powerpc/sysdev/timer.c b/arch/powerpc/sysdev/timer.c
deleted file mode 100644
index e81e7ec2e79..00000000000
--- a/arch/powerpc/sysdev/timer.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * Common code to keep time when machine suspends.
- *
- * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
- *
- * GPLv2
- */
-
-#include <linux/time.h>
-#include <linux/sysdev.h>
-#include <asm/rtc.h>
-
-static unsigned long suspend_rtc_time;
-
-/*
- * Reset the time after a sleep.
- */
-static int timer_resume(struct sys_device *dev)
-{
-	struct timeval tv;
-	struct timespec ts;
-	struct rtc_time cur_rtc_tm;
-	unsigned long cur_rtc_time, diff;
-
-	/* get current RTC time and convert to seconds */
-	get_rtc_time(&cur_rtc_tm);
-	cur_rtc_time = mktime(cur_rtc_tm.tm_year + 1900,
-			      cur_rtc_tm.tm_mon + 1,
-			      cur_rtc_tm.tm_mday,
-			      cur_rtc_tm.tm_hour,
-			      cur_rtc_tm.tm_min,
-			      cur_rtc_tm.tm_sec);
-
-	diff = cur_rtc_time - suspend_rtc_time;
-
-	/* adjust time of day by seconds that elapsed while
-	 * we were suspended */
-	do_gettimeofday(&tv);
-	ts.tv_sec = tv.tv_sec + diff;
-	ts.tv_nsec = tv.tv_usec * NSEC_PER_USEC;
-	do_settimeofday(&ts);
-
-	return 0;
-}
-
-static int timer_suspend(struct sys_device *dev, pm_message_t state)
-{
-	struct rtc_time suspend_rtc_tm;
-	WARN_ON(!ppc_md.get_rtc_time);
-
-	get_rtc_time(&suspend_rtc_tm);
-	suspend_rtc_time = mktime(suspend_rtc_tm.tm_year + 1900,
-				  suspend_rtc_tm.tm_mon + 1,
-				  suspend_rtc_tm.tm_mday,
-				  suspend_rtc_tm.tm_hour,
-				  suspend_rtc_tm.tm_min,
-				  suspend_rtc_tm.tm_sec);
-
-	return 0;
-}
-
-static struct sysdev_class timer_sysclass = {
-	.resume = timer_resume,
-	.suspend = timer_suspend,
-	set_kset_name("timer"),
-};
-
-static struct sys_device device_timer = {
-	.id = 0,
-	.cls = &timer_sysclass,
-};
-
-static int time_init_device(void)
-{
-	int error = sysdev_class_register(&timer_sysclass);
-	if (!error)
-		error = sysdev_register(&device_timer);
-	return error;
-}
-
-device_initcall(time_init_device);