Merge branches 'sh/stable-updates' and 'sh/sparseirq'

1 files changed, 125 insertions, 0 deletions

diff --git a/arch/sh/kernel/time.c b/arch/sh/kernel/time.c
new file mode 100644
index 000000000000..2edde32c764b
--- /dev/null
+++ b/arch/sh/kernel/time.c
@@ -0,0 +1,125 @@
+/*
+ *  arch/sh/kernel/time.c
+ *
+ *  Copyright (C) 1999  Tetsuya Okada & Niibe Yutaka
+ *  Copyright (C) 2000  Philipp Rumpf <prumpf@tux.org>
+ *  Copyright (C) 2002 - 2009  Paul Mundt
+ *  Copyright (C) 2002  M. R. Brown  <mrbrown@linux-sh.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/profile.h>
+#include <linux/timex.h>
+#include <linux/sched.h>
+#include <linux/clockchips.h>
+#include <linux/platform_device.h>
+#include <linux/smp.h>
+#include <linux/rtc.h>
+#include <asm/clock.h>
+#include <asm/rtc.h>
+
+/* Dummy RTC ops */
+static void null_rtc_get_time(struct timespec *tv)
+{
+        tv->tv_sec = mktime(2000, 1, 1, 0, 0, 0);
+        tv->tv_nsec = 0;
+}
+
+static int null_rtc_set_time(const time_t secs)
+{
+        return 0;
+}
+
+void (*rtc_sh_get_time)(struct timespec *) = null_rtc_get_time;
+int (*rtc_sh_set_time)(const time_t) = null_rtc_set_time;
+
+#ifdef CONFIG_GENERIC_CMOS_UPDATE
+unsigned long read_persistent_clock(void)
+{
+        struct timespec tv;
+        rtc_sh_get_time(&tv);
+        return tv.tv_sec;
+}
+
+int update_persistent_clock(struct timespec now)
+{
+        return rtc_sh_set_time(now.tv_sec);
+}
+#endif
+
+unsigned int get_rtc_time(struct rtc_time *tm)
+{
+        if (rtc_sh_get_time != null_rtc_get_time) {
+                struct timespec tv;
+
+                rtc_sh_get_time(&tv);
+                rtc_time_to_tm(tv.tv_sec, tm);
+        }
+
+        return RTC_24H;
+}
+EXPORT_SYMBOL(get_rtc_time);
+
+int set_rtc_time(struct rtc_time *tm)
+{
+        unsigned long secs;
+
+        rtc_tm_to_time(tm, &secs);
+        return rtc_sh_set_time(secs);
+}
+EXPORT_SYMBOL(set_rtc_time);
+
+static int __init rtc_generic_init(void)
+{
+        struct platform_device *pdev;
+
+        if (rtc_sh_get_time == null_rtc_get_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_generic_init);
+
+void (*board_time_init)(void);
+
+unsigned long long sched_clock(void)
+{
+        return (jiffies_64 - INITIAL_JIFFIES) * (NSEC_PER_SEC / HZ);
+}
+
+static void __init sh_late_time_init(void)
+{
+        /*
+         * Make sure all compiled-in early timers register themselves.
+         * Run probe() for one "earlytimer" device.
+         */
+        early_platform_driver_register_all("earlytimer");
+        early_platform_driver_probe("earlytimer", 1, 0);
+}
+
+void __init time_init(void)
+{
+        if (board_time_init)
+                board_time_init();
+
+        clk_init();
+
+        rtc_sh_get_time(&xtime);
+        set_normalized_timespec(&wall_to_monotonic,
+                                -xtime.tv_sec, -xtime.tv_nsec);
+
+#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
+        local_timer_setup(smp_processor_id());
+#endif
+
+        late_time_init = sh_late_time_init;
+}