NTP: move the cmos update code into ntp.c

[linux-2.6-omap-h63xx.git] / arch / i386 / kernel / time.c

diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
index a5350059557a6541c0c96b8f8ba6933073999d05..19a6c678d02ecc1448cff0bf0b6f03b997d478c0 100644 (file)
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -70,8 +70,6 @@
 
 #include <asm/i8259.h>
 
-int pit_latch_buggy;              /* extern */
-
 #include "do_timer.h"
 
 unsigned int cpu_khz;  /* Detected as we calibrate the TSC */
@@ -209,67 +207,30 @@ unsigned long read_persistent_clock(void)
        return retval;
 }
 
-static void sync_cmos_clock(unsigned long dummy);
-
-static DEFINE_TIMER(sync_cmos_timer, sync_cmos_clock, 0, 0);
-int no_sync_cmos_clock;
-
-static void sync_cmos_clock(unsigned long dummy)
-{
-       struct timeval now, next;
-       int fail = 1;
-
-       /*
-        * If we have an externally synchronized Linux clock, then update
-        * CMOS clock accordingly every ~11 minutes. Set_rtc_mmss() has to be
-        * called as close as possible to 500 ms before the new second starts.
-        * This code is run on a timer.  If the clock is set, that timer
-        * may not expire at the correct time.  Thus, we adjust...
-        */
-       if (!ntp_synced())
-               /*
-                * Not synced, exit, do not restart a timer (if one is
-                * running, let it run out).
-                */
-               return;
-
-       do_gettimeofday(&now);
-       if (now.tv_usec >= USEC_AFTER - ((unsigned) TICK_SIZE) / 2 &&
-           now.tv_usec <= USEC_BEFORE + ((unsigned) TICK_SIZE) / 2)
-               fail = set_rtc_mmss(now.tv_sec);
-
-       next.tv_usec = USEC_AFTER - now.tv_usec;
-       if (next.tv_usec <= 0)
-               next.tv_usec += USEC_PER_SEC;
-
-       if (!fail)
-               next.tv_sec = 659;
-       else
-               next.tv_sec = 0;
-
-       if (next.tv_usec >= USEC_PER_SEC) {
-               next.tv_sec++;
-               next.tv_usec -= USEC_PER_SEC;
-       }
-       mod_timer(&sync_cmos_timer, jiffies + timeval_to_jiffies(&next));
-}
-
-void notify_arch_cmos_timer(void)
+int update_persistent_clock(struct timespec now)
 {
-       if (!no_sync_cmos_clock)
-               mod_timer(&sync_cmos_timer, jiffies + 1);
+       return set_rtc_mmss(now.tv_sec);
 }
 
 extern void (*late_time_init)(void);
 /* Duplicate of time_init() below, with hpet_enable part added */
-static void __init hpet_time_init(void)
+void __init hpet_time_init(void)
 {
        if (!hpet_enable())
                setup_pit_timer();
-       do_time_init();
+       time_init_hook();
 }
 
+/*
+ * This is called directly from init code; we must delay timer setup in the
+ * HPET case as we can't make the decision to turn on HPET this early in the
+ * boot process.
+ *
+ * The chosen time_init function will usually be hpet_time_init, above, but
+ * in the case of virtual hardware, an alternative function may be substituted.
+ */
 void __init time_init(void)
 {
-       late_time_init = hpet_time_init;
+       tsc_init();
+       late_time_init = choose_time_init();
 }