Merge branch 'for-2.6.22' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

* 'for-2.6.22' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (255 commits)
  [POWERPC] Remove dev_dbg redefinition in drivers/ps3/vuart.c
  [POWERPC] remove kernel module option for booke wdt
  [POWERPC] Avoid putting cpu node twice
  [POWERPC] Spinlock initializer cleanup
  [POWERPC] ppc4xx_sgdma needs dma-mapping.h
  [POWERPC] arch/powerpc/sysdev/timer.c build fix
  [POWERPC] get_property cleanups
  [POWERPC] Remove the unused HTDMSOUND driver
  [POWERPC] cell: cbe_cpufreq cleanup and crash fix
  [POWERPC] Declare enable_kernel_spe in a header
  [POWERPC] Add dt_xlate_addr() to bootwrapper
  [POWERPC] bootwrapper: CONFIG_ -> CONFIG_DEVICE_TREE
  [POWERPC] Don't define a custom bd_t for Xilixn Virtex based boards.
  [POWERPC] Add sane defaults for Xilinx EDK generated xparameters files
  [POWERPC] Add uartlite boot console driver for the zImage wrapper
  [POWERPC] Stop using ppc_sys for Xilinx Virtex boards
  [POWERPC] New registration for common Xilinx Virtex ppc405 platform devices
  [POWERPC] Merge common virtex header files
  [POWERPC] Rework Kconfig dependancies for Xilinx Virtex ppc405 platform
  [POWERPC] Clean up cpufreq Kconfig dependencies
  ...

1 files changed, 71 insertions, 0 deletions

diff --git a/arch/powerpc/sysdev/timer.c b/arch/powerpc/sysdev/timer.c
new file mode 100644
index 00000000000..4a01748b421
--- /dev/null
+++ b/arch/powerpc/sysdev/timer.c
@@ -0,0 +1,71 @@
+/*
+ * 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);
+	rtc_tm_to_time(&cur_rtc_tm, &cur_rtc_time);
+
+	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);
+	rtc_tm_to_time(&suspend_rtc_tm, &suspend_rtc_time);
+
+	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);