include/uapi/linux/hpet.h

   1 #ifndef _UAPI__HPET__
   2 #define _UAPI__HPET__
   3
   4 #include <linux/compiler.h>
   5
   6
   7 struct hpet_info {
   8         unsigned long hi_ireqfreq;      /* Hz */
   9         unsigned long hi_flags; /* information */
  10         unsigned short hi_hpet;
  11         unsigned short hi_timer;
  12 };
  13
  14 #define HPET_INFO_PERIODIC      0x0010  /* periodic-capable comparator */
  15
  16 #define HPET_IE_ON      _IO('h', 0x01)  /* interrupt on */
  17 #define HPET_IE_OFF     _IO('h', 0x02)  /* interrupt off */
  18 #define HPET_INFO       _IOR('h', 0x03, struct hpet_info)
  19 #define HPET_EPI        _IO('h', 0x04)  /* enable periodic */
  20 #define HPET_DPI        _IO('h', 0x05)  /* disable periodic */
  21 #define HPET_IRQFREQ    _IOW('h', 0x6, unsigned long)   /* IRQFREQ usec */
  22
  23 #define MAX_HPET_TBS    8               /* maximum hpet timer blocks */
  24
  25 #endif /* _UAPI__HPET__ */