f5e0e93faf
PIT clock events work already and the PIT handling is the same for i386 and x86_64. x86_64 does not support PIT as a clock source, so disable the PIT clocksource for x86_64. Prepare i8253.h to be shared with x8664 Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
20 lines
340 B
C
20 lines
340 B
C
#ifndef __ASM_I8253_H__
|
|
#define __ASM_I8253_H__
|
|
|
|
/* i8253A PIT registers */
|
|
#define PIT_MODE 0x43
|
|
#define PIT_CH0 0x40
|
|
#define PIT_CH2 0x42
|
|
|
|
extern spinlock_t i8253_lock;
|
|
|
|
#ifdef CONFIG_GENERIC_CLOCKEVENTS
|
|
|
|
extern struct clock_event_device *global_clock_event;
|
|
|
|
extern void setup_pit_timer(void);
|
|
|
|
#endif
|
|
|
|
#endif /* __ASM_I8253_H__ */
|