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Subject[RFC][PATCH 5/12] generic timeofday i386 arch specific changes, part 1
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Date
All,
The conversion of i386 to use the generic timeofday subsystem has been
split into 6 parts. This patch, the first of six, is just a simple
cleanup for the i386 arch in preperation of moving the the generic
timeofday infrastructure. It simply moves some code from timer_pit.c to
i8259.c.

It applies on top of my timeofday-core patch. This patch is part the
timeofday-arch-i386 patchset, so without the following parts it is not
expected to compile (although just this one should).


thanks
-john

i8259.c | 40 ++++++++++++++++++++++++++++++++++++++++
time.c | 1 -
timers/timer_pit.c | 13 -------------
3 files changed, 40 insertions(+), 14 deletions(-)
linux-2.6.14-rc4_timeofday-arch-i386-part1_B7.patch
============================================
diff --git a/arch/i386/kernel/i8259.c b/arch/i386/kernel/i8259.c
--- a/arch/i386/kernel/i8259.c
+++ b/arch/i386/kernel/i8259.c
@@ -23,6 +23,7 @@
#include <asm/apic.h>
#include <asm/arch_hooks.h>
#include <asm/i8259.h>
+#include <asm/i8253.h>

#include <io_ports.h>

@@ -396,6 +397,45 @@ void __init init_ISA_irqs (void)
}
}

+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);
+}
+
+static int timer_resume(struct sys_device *dev)
+{
+ setup_pit_timer();
+ return 0;
+}
+
+static struct sysdev_class timer_sysclass = {
+ set_kset_name("timer_pit"),
+ .resume = timer_resume,
+};
+
+static struct sys_device device_timer = {
+ .id = 0,
+ .cls = &timer_sysclass,
+};
+
+static int __init init_timer_sysfs(void)
+{
+ int error = sysdev_class_register(&timer_sysclass);
+ if (!error)
+ error = sysdev_register(&device_timer);
+ return error;
+}
+
+device_initcall(init_timer_sysfs);
+
void __init init_IRQ(void)
{
int i;
diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -404,7 +404,6 @@ static int timer_resume(struct sys_devic
if (is_hpet_enabled())
hpet_reenable();
#endif
- setup_pit_timer();
sec = get_cmos_time() + clock_cmos_diff;
sleep_length = (get_cmos_time() - sleep_start) * HZ;
write_seqlock_irqsave(&xtime_lock, flags);
diff --git a/arch/i386/kernel/timers/timer_pit.c b/arch/i386/kernel/timers/timer_pit.c
--- a/arch/i386/kernel/timers/timer_pit.c
+++ b/arch/i386/kernel/timers/timer_pit.c
@@ -161,16 +161,3 @@ struct init_timer_opts __initdata timer_
.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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