root/include/uapi/linux/hpet.h

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INCLUDED FROM

#ifndef _UAPI__HPET__
#define _UAPI__HPET__

#include <linux/compiler.h>


struct hpet_info {
        unsigned long hi_ireqfreq;      /* Hz */
        unsigned long hi_flags; /* information */
        unsigned short hi_hpet;
        unsigned short hi_timer;
};

#define HPET_INFO_PERIODIC      0x0010  /* periodic-capable comparator */

#define HPET_IE_ON      _IO('h', 0x01)  /* interrupt on */
#define HPET_IE_OFF     _IO('h', 0x02)  /* interrupt off */
#define HPET_INFO       _IOR('h', 0x03, struct hpet_info)
#define HPET_EPI        _IO('h', 0x04)  /* enable periodic */
#define HPET_DPI        _IO('h', 0x05)  /* disable periodic */
#define HPET_IRQFREQ    _IOW('h', 0x6, unsigned long)   /* IRQFREQ usec */

#define MAX_HPET_TBS    8               /* maximum hpet timer blocks */

#endif /* _UAPI__HPET__ */
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