diff options
Diffstat (limited to 'arch/x86/include/asm/i8253.h')
| -rw-r--r-- | arch/x86/include/asm/i8253.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/include/asm/i8253.h b/arch/x86/include/asm/i8253.h new file mode 100644 index 000000000000..1edbf89680fd --- /dev/null +++ b/arch/x86/include/asm/i8253.h @@ -0,0 +1,18 @@ +#ifndef _ASM_X86_I8253_H +#define _ASM_X86_I8253_H + +/* i8253A PIT registers */ +#define PIT_MODE 0x43 +#define PIT_CH0 0x40 +#define PIT_CH2 0x42 + +extern spinlock_t i8253_lock; + +extern struct clock_event_device *global_clock_event; + +extern void setup_pit_timer(void); + +#define inb_pit inb_p +#define outb_pit outb_p + +#endif /* _ASM_X86_I8253_H */ |