diff options
| author |   Russell King <rmk+kernel@arm.linux.org.uk> | 2011-05-08 18:50:20 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-05-14 10:29:48 +0100 |
| commit | 8c414ff3f4dcdde228c6a668385218290d73a265 (patch) | |
| tree | 2454fc7bf7d76b13fd6c03c08954afbae9d633b0 /arch/arm/include/asm/i8253.h | |
| parent | clocksource: add common i8253 PIT clocksource (diff) | |
| download | linux-dev-8c414ff3f4dcdde228c6a668385218290d73a265.tar.xz linux-dev-8c414ff3f4dcdde228c6a668385218290d73a265.zip | |
clocksource: convert footbridge to generic i8253 clocksource
Convert the footbridge isa-timer code to use generic i8253 clocksource.
Acked-by: John Stultz <john.stultz@linaro.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/i8253.h')
| -rw-r--r-- | arch/arm/include/asm/i8253.h | 15 |
1 files changed, 15 insertions, 0 deletions
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 |