sh: Rename arch/sh/kernel/time_32.c to arch/sh/kernel/time.c.

This is now fully generic, and used both by _32 and _64 variants.
Rename it accordingly.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 231 insertions, 0 deletions

diff --git a/arch/sh/kernel/time.c b/arch/sh/kernel/time.c
new file mode 100644
index 000000000000..d41ca4cf20cf
--- /dev/null
+++ b/arch/sh/kernel/time.c
@@ -0,0 +1,231 @@
+/*
+ *  arch/sh/kernel/time_32.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>
+ *
+ *  Some code taken from i386 version.
+ *    Copyright (C) 1991, 1992, 1995  Linus Torvalds
+ */
+#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/mc146818rtc.h>  /* for rtc_lock */
+#include <linux/platform_device.h>
+#include <linux/smp.h>
+#include <linux/rtc.h>
+#include <asm/clock.h>
+#include <asm/rtc.h>
+#include <asm/timer.h>
+#include <asm/kgdb.h>
+
+struct sys_timer *sys_timer;
+
+/* Move this somewhere more sensible.. */
+DEFINE_SPINLOCK(rtc_lock);
+EXPORT_SYMBOL(rtc_lock);
+
+/* 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;
+
+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);
+
+/* last time the RTC clock got updated */
+static long last_rtc_update;
+
+/*
+ * handle_timer_tick() needs to keep up the real-time clock,
+ * as well as call the "do_timer()" routine every clocktick
+ */
+void handle_timer_tick(void)
+{
+        if (current->pid)
+                profile_tick(CPU_PROFILING);
+
+        /*
+         * Here we are in the timer irq handler. We just have irqs locally
+         * disabled but we don't know if the timer_bh is running on the other
+         * CPU. We need to avoid to SMP race with it. NOTE: we don' t need
+         * the irq version of write_lock because as just said we have irq
+         * locally disabled. -arca
+         */
+        write_seqlock(&xtime_lock);
+        do_timer(1);
+
+        /*
+         * If we have an externally synchronized Linux clock, then update
+         * RTC clock accordingly every ~11 minutes. Set_rtc_mmss() has to be
+         * called as close as possible to 500 ms before the new second starts.
+         */
+        if (ntp_synced() &&
+            xtime.tv_sec > last_rtc_update + 660 &&
+            (xtime.tv_nsec / 1000) >= 500000 - ((unsigned) TICK_SIZE) / 2 &&
+            (xtime.tv_nsec / 1000) <= 500000 + ((unsigned) TICK_SIZE) / 2) {
+                if (rtc_sh_set_time(xtime.tv_sec) == 0)
+                        last_rtc_update = xtime.tv_sec;
+                else
+                        /* do it again in 60s */
+                        last_rtc_update = xtime.tv_sec - 600;
+        }
+        write_sequnlock(&xtime_lock);
+
+#ifndef CONFIG_SMP
+        update_process_times(user_mode(get_irq_regs()));
+#endif
+}
+
+#ifdef CONFIG_PM
+int timer_suspend(struct sys_device *dev, pm_message_t state)
+{
+        struct sys_timer *sys_timer = container_of(dev, struct sys_timer, dev);
+
+        sys_timer->ops->stop();
+
+        return 0;
+}
+
+int timer_resume(struct sys_device *dev)
+{
+        struct sys_timer *sys_timer = container_of(dev, struct sys_timer, dev);
+
+        sys_timer->ops->start();
+
+        return 0;
+}
+#else
+#define timer_suspend NULL
+#define timer_resume NULL
+#endif
+
+static struct sysdev_class timer_sysclass = {
+        .name    = "timer",
+        .suspend = timer_suspend,
+        .resume  = timer_resume,
+};
+
+static int __init timer_init_sysfs(void)
+{
+        int ret;
+
+        if (!sys_timer)
+                return 0;
+
+        ret = sysdev_class_register(&timer_sysclass);
+        if (ret != 0)
+                return ret;
+
+        sys_timer->dev.cls = &timer_sysclass;
+        return sysdev_register(&sys_timer->dev);
+}
+device_initcall(timer_init_sysfs);
+
+void (*board_time_init)(void);
+
+struct clocksource clocksource_sh = {
+        .name           = "SuperH",
+};
+
+unsigned long long sched_clock(void)
+{
+        unsigned long long cycles;
+
+        /* jiffies based sched_clock if no clocksource is installed */
+        if (!clocksource_sh.rating)
+                return (unsigned long long)jiffies * (NSEC_PER_SEC / HZ);
+
+        cycles = clocksource_sh.read(&clocksource_sh);
+        return cyc2ns(&clocksource_sh, cycles);
+}
+
+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");
+        if (early_platform_driver_probe("earlytimer", 1, 0))
+                return;
+
+        /*
+         * Find the timer to use as the system timer, it will be
+         * initialized for us.
+         */
+        sys_timer = get_sys_timer();
+        if (unlikely(!sys_timer))
+                panic("System timer missing.\n");
+
+        printk(KERN_INFO "Using %s for system timer\n", sys_timer->name);
+}
+
+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;
+}
+