uapi/linux/pps.h

1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
5  * Copyright (C) 2005-2009   Rodolfo Giometti <giometti@linux.it>
31 /* Implementation note: the logical states ``assert'' and ``clear''
33  * means the bit is set.  */
43 /* 32-bit vs. 64-bit compatibility.
69 	__u32 clear_sequence; 		/* seq. num. of clear event */
71 	struct pps_ktime clear_tu;	/* time of clear event */
77 	__u32 clear_sequence;			/* seq. num. of clear event */
79 	struct pps_ktime_compat clear_tu;	/* time of clear event */
87 	struct pps_ktime clear_off_tu;	/* offset compensation for clear */
91  * 3.3 Mode bit definitions
96 #define PPS_CAPTURECLEAR	0x02	/* capture clear events */
97 #define PPS_CAPTUREBOTH		0x03	/* capture assert and clear events */
100 #define PPS_OFFSETCLEAR		0x20	/* apply compensation for clear event */
103 #define PPS_CANPOLL		0x200	/* bit reserved for future use */
107 #define PPS_ECHOCLEAR		0x80	/* feed back clear event to output */
120 					   use a phase-locked loop */
122 					   use a frequency-locked loop */
124  * Here begins the implementation-specific part!