root/include/uapi/linux/hpet.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _UAPI__HPET__
   3 #define _UAPI__HPET__
   4 
   5 #include <linux/compiler.h>
   6 
   7 
   8 struct hpet_info {
   9         unsigned long hi_ireqfreq;      /* Hz */
  10         unsigned long hi_flags; /* information */
  11         unsigned short hi_hpet;
  12         unsigned short hi_timer;
  13 };
  14 
  15 #define HPET_INFO_PERIODIC      0x0010  /* periodic-capable comparator */
  16 
  17 #define HPET_IE_ON      _IO('h', 0x01)  /* interrupt on */
  18 #define HPET_IE_OFF     _IO('h', 0x02)  /* interrupt off */
  19 #define HPET_INFO       _IOR('h', 0x03, struct hpet_info)
  20 #define HPET_EPI        _IO('h', 0x04)  /* enable periodic */
  21 #define HPET_DPI        _IO('h', 0x05)  /* disable periodic */
  22 #define HPET_IRQFREQ    _IOW('h', 0x6, unsigned long)   /* IRQFREQ usec */
  23 
  24 #define MAX_HPET_TBS    8               /* maximum hpet timer blocks */
  25 
  26 #endif /* _UAPI__HPET__ */