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
8struct 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__ */
27