diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2008-01-30 12:30:26 (GMT) |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 12:30:26 (GMT) |
commit | fe599f9fbc5d470ec5b55d08f2bbb991ddecbbc8 (patch) | |
tree | be07dcd4062fbcb801ae833678b3818d2fd47ceb /arch/x86/kernel/time_32.c | |
parent | 6ce60b07e670e800c4c5cfe984ed5188e7a64135 (diff) | |
download | linux-fsl-qoriq-fe599f9fbc5d470ec5b55d08f2bbb991ddecbbc8.tar.xz |
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>
Diffstat (limited to 'arch/x86/kernel/time_32.c')
-rw-r--r-- | arch/x86/kernel/time_32.c | 105 |
1 files changed, 4 insertions, 101 deletions
diff --git a/arch/x86/kernel/time_32.c b/arch/x86/kernel/time_32.c index 8a322c9..e9ead76 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) |