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#ifndef _ACPI_PMTMR_H_
#define _ACPI_PMTMR_H_
 
#include <linux/clocksource.h>
 
/* Number of PMTMR ticks expected during calibration run */
#define PMTMR_TICKS_PER_SEC 3579545
 
/* limit it to 24 bits */
#define ACPI_PM_MASK CLOCKSOURCE_MASK(24)
 
/* Overrun value */
#define ACPI_PM_OVRRUN	(1<<24)
 
#ifdef CONFIG_X86_PM_TIMER
 
extern u32 acpi_pm_read_verified(void);
extern u32 pmtmr_ioport;
 
static inline u32 acpi_pm_read_early(void)
{
	if (!pmtmr_ioport)
		return 0;
	/* mask the output to 24 bits */
	return acpi_pm_read_verified() & ACPI_PM_MASK;
}
 
#else
 
static inline u32 acpi_pm_read_early(void)
{
	return 0;
}
 
#endif
 
#endif