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__ */
27