From 8d016ef1380a2a9a5ca5742ede04334199868f82 Mon Sep 17 00:00:00 2001
From: john stultz <johnstul@us.ibm.com>
Date: Mon, 26 Jun 2006 00:25:09 -0700
Subject: [PATCH] Time: i386 Conversion - part 1: Move timer_pit.c to i8253.c

A simple cleanup for the i386 arch in preparation of moving to the generic
timeofday infrastructure.  It simply moves the PIT initialization code, locks,
and other code we want to keep from some code from timer_pit.c (which will be
removed) to i8253.c.

Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/Makefile           |  2 +-
 arch/i386/kernel/i8253.c            | 32 ++++++++++++++++++++++++++++++++
 arch/i386/kernel/time.c             |  5 -----
 arch/i386/kernel/timers/timer_pit.c | 13 -------------
 4 files changed, 33 insertions(+), 19 deletions(-)
 create mode 100644 arch/i386/kernel/i8253.c

(limited to 'arch')

diff --git a/arch/i386/kernel/Makefile b/arch/i386/kernel/Makefile
index 96fb8a0..4142d69 100644
--- a/arch/i386/kernel/Makefile
+++ b/arch/i386/kernel/Makefile
@@ -7,7 +7,7 @@ extra-y := head.o init_task.o vmlinux.lds
 obj-y	:= process.o semaphore.o signal.o entry.o traps.o irq.o \
 		ptrace.o time.o ioport.o ldt.o setup.o i8259.o sys_i386.o \
 		pci-dma.o i386_ksyms.o i387.o bootflag.o \
-		quirks.o i8237.o topology.o alternative.o
+		quirks.o i8237.o topology.o alternative.o i8253.o
 
 obj-y				+= cpu/
 obj-y				+= timers/
diff --git a/arch/i386/kernel/i8253.c b/arch/i386/kernel/i8253.c
new file mode 100644
index 0000000..29cb2eb
--- /dev/null
+++ b/arch/i386/kernel/i8253.c
@@ -0,0 +1,32 @@
+/*
+ * i8253.c  8253/PIT functions
+ *
+ */
+#include <linux/spinlock.h>
+#include <linux/jiffies.h>
+#include <linux/sysdev.h>
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include <asm/smp.h>
+#include <asm/delay.h>
+#include <asm/i8253.h>
+#include <asm/io.h>
+
+#include "io_ports.h"
+
+DEFINE_SPINLOCK(i8253_lock);
+EXPORT_SYMBOL(i8253_lock);
+
+void setup_pit_timer(void)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&i8253_lock, flags);
+	outb_p(0x34,PIT_MODE);		/* binary, mode 2, LSB/MSB, ch 0 */
+	udelay(10);
+	outb_p(LATCH & 0xff , PIT_CH0);	/* LSB */
+	udelay(10);
+	outb(LATCH >> 8 , PIT_CH0);	/* MSB */
+	spin_unlock_irqrestore(&i8253_lock, flags);
+}
diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
index 9d30747..796e5fa 100644
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -82,11 +82,6 @@ extern unsigned long wall_jiffies;
 DEFINE_SPINLOCK(rtc_lock);
 EXPORT_SYMBOL(rtc_lock);
 
-#include <asm/i8253.h>
-
-DEFINE_SPINLOCK(i8253_lock);
-EXPORT_SYMBOL(i8253_lock);
-
 struct timer_opts *cur_timer __read_mostly = &timer_none;
 
 /*
diff --git a/arch/i386/kernel/timers/timer_pit.c b/arch/i386/kernel/timers/timer_pit.c
index b9b6bd5..44cbdf9 100644
--- a/arch/i386/kernel/timers/timer_pit.c
+++ b/arch/i386/kernel/timers/timer_pit.c
@@ -162,16 +162,3 @@ struct init_timer_opts __initdata timer_pit_init = {
 	.init = init_pit, 
 	.opts = &timer_pit,
 };
-
-void setup_pit_timer(void)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&i8253_lock, flags);
-	outb_p(0x34,PIT_MODE);		/* binary, mode 2, LSB/MSB, ch 0 */
-	udelay(10);
-	outb_p(LATCH & 0xff , PIT_CH0);	/* LSB */
-	udelay(10);
-	outb(LATCH >> 8 , PIT_CH0);	/* MSB */
-	spin_unlock_irqrestore(&i8253_lock, flags);
-}
-- 
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