From 8c414ff3f4dcdde228c6a668385218290d73a265 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 8 May 2011 18:50:20 +0100 Subject: clocksource: convert footbridge to generic i8253 clocksource Convert the footbridge isa-timer code to use generic i8253 clocksource. Acked-by: John Stultz Acked-by: Thomas Gleixner Signed-off-by: Russell King --- arch/arm/include/asm/i8253.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 arch/arm/include/asm/i8253.h (limited to 'arch/arm/include/asm/i8253.h') diff --git a/arch/arm/include/asm/i8253.h b/arch/arm/include/asm/i8253.h new file mode 100644 index 000000000000..70656b69d5ce --- /dev/null +++ b/arch/arm/include/asm/i8253.h @@ -0,0 +1,15 @@ +#ifndef __ASMARM_I8253_H +#define __ASMARM_I8253_H + +/* i8253A PIT registers */ +#define PIT_MODE 0x43 +#define PIT_CH0 0x40 + +#define PIT_LATCH ((PIT_TICK_RATE + HZ / 2) / HZ) + +extern raw_spinlock_t i8253_lock; + +#define outb_pit outb_p +#define inb_pit inb_p + +#endif -- cgit v1.2.3