x86: isolate the rtc code for sharing

The mach-default/mach_time.h code inline is moved to arch/x86/kernel/rtc.c
and the header files are adjusted.

Shrink the 3 dozen includes to the ones we really need.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 4 insertions, 101 deletions

diff --git a/arch/x86/kernel/time_32.c b/arch/x86/kernel/time_32.c
index 8a322c96bc23..e9ead762abe8 100644
--- a/arch/x86/kernel/time_32.c
+++ b/arch/x86/kernel/time_32.c
@@ -28,98 +28,21 @@
  *      serialize accesses to xtime/lost_ticks).
  */
 
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/param.h>
-#include <linux/string.h>
-#include <linux/mm.h>
+#include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/time.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/module.h>
-#include <linux/sysdev.h>
-#include <linux/bcd.h>
-#include <linux/efi.h>
 #include <linux/mca.h>
 
-#include <asm/io.h>
-#include <asm/smp.h>
-#include <asm/irq.h>
-#include <asm/msr.h>
-#include <asm/delay.h>
-#include <asm/mpspec.h>
-#include <asm/uaccess.h>
-#include <asm/processor.h>
-#include <asm/timer.h>
-#include <asm/time.h>
-
-#include "mach_time.h"
-
-#include <linux/timex.h>
-
-#include <asm/hpet.h>
-
 #include <asm/arch_hooks.h>
+#include <asm/hpet.h>
+#include <asm/time.h>
 
 #include "io_ports.h"
-
-#include <asm/i8259.h>
-
 #include "do_timer.h"
 
 unsigned int cpu_khz;   /* Detected as we calibrate the TSC */
 EXPORT_SYMBOL(cpu_khz);
 
-DEFINE_SPINLOCK(rtc_lock);
-EXPORT_SYMBOL(rtc_lock);
-
-/*
- * This is a special lock that is owned by the CPU and holds the index
- * register we are working with.  It is required for NMI access to the
- * CMOS/RTC registers.  See include/asm-i386/mc146818rtc.h for details.
- */
-volatile unsigned long cmos_lock = 0;
-EXPORT_SYMBOL(cmos_lock);
-
-/* Routines for accessing the CMOS RAM/RTC. */
-unsigned char rtc_cmos_read(unsigned char addr)
-{
-        unsigned char val;
-        lock_cmos_prefix(addr);
-        outb_p(addr, RTC_PORT(0));
-        val = inb_p(RTC_PORT(1));
-        lock_cmos_suffix(addr);
-        return val;
-}
-EXPORT_SYMBOL(rtc_cmos_read);
-
-void rtc_cmos_write(unsigned char val, unsigned char addr)
-{
-        lock_cmos_prefix(addr);
-        outb_p(addr, RTC_PORT(0));
-        outb_p(val, RTC_PORT(1));
-        lock_cmos_suffix(addr);
-}
-EXPORT_SYMBOL(rtc_cmos_write);
-
-static int set_rtc_mmss(unsigned long nowtime)
-{
-        int retval;
-        unsigned long flags;
-
-        /* gets recalled with irq locally disabled */
-        /* XXX - does irqsave resolve this? -johnstul */
-        spin_lock_irqsave(&rtc_lock, flags);
-        retval = set_wallclock(nowtime);
-        spin_unlock_irqrestore(&rtc_lock, flags);
-
-        return retval;
-}
-
-
 int timer_ack;
 
 unsigned long profile_pc(struct pt_regs *regs)
@@ -137,7 +60,7 @@ unsigned long profile_pc(struct pt_regs *regs)
                 /* Return address is either directly at stack pointer
                    or above a saved eflags. Eflags has bits 22-31 zero,
                    kernel addresses don't. */
-                if (sp[0] >> 22)
+                if (sp[0] >> 22)
                         return sp[0];
                 if (sp[1] >> 22)
                         return sp[1];
@@ -193,26 +116,6 @@ irqreturn_t timer_interrupt(int irq, void *dev_id)
         return IRQ_HANDLED;
 }
 
-/* not static: needed by APM */
-unsigned long read_persistent_clock(void)
-{
-        unsigned long retval;
-        unsigned long flags;
-
-        spin_lock_irqsave(&rtc_lock, flags);
-
-        retval = get_wallclock();
-
-        spin_unlock_irqrestore(&rtc_lock, flags);
-
-        return retval;
-}
-
-int update_persistent_clock(struct timespec now)
-{
-        return set_rtc_mmss(now.tv_sec);
-}
-
 extern void (*late_time_init)(void);
 /* Duplicate of time_init() below, with hpet_enable part added */
 void __init hpet_time_init(void)