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i8253: Consolidate all kernel definitions of i8253_lock

Browse source 
Move them to drivers/clocksource/i8253.c and remove the
implementations in arch/

[ tglx: Avoid the extra file in lib - folded arch patches in. The
  export will become conditional in a later step ]

Signed-off-by: Ralf Baechle <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Cc: Russell King <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
This commit is contained in:
Ralf Baechle 2011-06-01 19:04:59 +01:00 • committed by Thomas Gleixner
commit 15f304b664
8 changed files with 21 additions and 10 deletions
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6
drivers/clocksource/Kconfig
View file

@ -1,5 +1,11 @@
config CLKSRC_I8253
bool
config I8253_LOCK
bool
config CLKBLD_I8253
def_bool y if CLKSRC_I8253 || I8253_LOCK
config CLKSRC_MMIO
bool

2
drivers/clocksource/Makefile
View file

@ -6,5 +6,5 @@ obj-$(CONFIG_CS5535_CLOCK_EVENT_SRC) += cs5535-clockevt.o
obj-$(CONFIG_SH_TIMER_CMT) += sh_cmt.o
obj-$(CONFIG_SH_TIMER_MTU2) += sh_mtu2.o
obj-$(CONFIG_SH_TIMER_TMU) += sh_tmu.o
obj-$(CONFIG_CLKSRC_I8253) += i8253.o
obj-$(CONFIG_CLKBLD_I8253) += i8253.o
obj-$(CONFIG_CLKSRC_MMIO) += mmio.o

13
drivers/clocksource/i8253.c
View file

@ -6,9 +6,19 @@
#include <linux/io.h>
#include <linux/spinlock.h>
#include <linux/timex.h>
#include <linux/module.h>
#include <linux/i8253.h>
/*
* Protects access to I/O ports
*
* 0040-0043 : timer0, i8253 / i8254
* 0061-0061 : NMI Control Register which contains two speaker control bits.
*/
DEFINE_RAW_SPINLOCK(i8253_lock);
EXPORT_SYMBOL(i8253_lock);
#ifdef CONFIG_CLKSRC_I8253
/*
* Since the PIT overflows every tick, its not very useful
* to just read by itself. So use jiffies to emulate a free
@ -86,3 +96,4 @@ int __init clocksource_i8253_init(void)
{
return clocksource_register_hz(&i8253_cs, PIT_TICK_RATE);
}
#endif