/usr/include/linux/pps.h is in linux-libc-dev 4.9.144-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | /*
* PPS API header
*
* Copyright (C) 2005-2009 Rodolfo Giometti <giometti@linux.it>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _PPS_H_
#define _PPS_H_
#include <linux/types.h>
#define PPS_VERSION "5.3.6"
#define PPS_MAX_SOURCES 16 /* should be enough... */
/* Implementation note: the logical states ``assert'' and ``clear''
* are implemented in terms of the chip register, i.e. ``assert''
* means the bit is set. */
/*
* 3.2 New data structures
*/
#define PPS_API_VERS_1 1
#define PPS_API_VERS PPS_API_VERS_1 /* we use API version 1 */
#define PPS_MAX_NAME_LEN 32
/* 32-bit vs. 64-bit compatibility.
*
* 0n i386, the alignment of a uint64_t is only 4 bytes, while on most other
* architectures it's 8 bytes. On i386, there will be no padding between the
* two consecutive 'struct pps_ktime' members of struct pps_kinfo and struct
* pps_kparams. But on most platforms there will be padding to ensure correct
* alignment.
*
* The simple fix is probably to add an explicit padding.
* [David Woodhouse]
*/
struct pps_ktime {
__s64 sec;
__s32 nsec;
__u32 flags;
};
#define PPS_TIME_INVALID (1<<0) /* used to specify timeout==NULL */
struct pps_kinfo {
__u32 assert_sequence; /* seq. num. of assert event */
__u32 clear_sequence; /* seq. num. of clear event */
struct pps_ktime assert_tu; /* time of assert event */
struct pps_ktime clear_tu; /* time of clear event */
int current_mode; /* current mode bits */
};
struct pps_kparams {
int api_version; /* API version # */
int mode; /* mode bits */
struct pps_ktime assert_off_tu; /* offset compensation for assert */
struct pps_ktime clear_off_tu; /* offset compensation for clear */
};
/*
* 3.3 Mode bit definitions
*/
/* Device/implementation parameters */
#define PPS_CAPTUREASSERT 0x01 /* capture assert events */
#define PPS_CAPTURECLEAR 0x02 /* capture clear events */
#define PPS_CAPTUREBOTH 0x03 /* capture assert and clear events */
#define PPS_OFFSETASSERT 0x10 /* apply compensation for assert ev. */
#define PPS_OFFSETCLEAR 0x20 /* apply compensation for clear ev. */
#define PPS_CANWAIT 0x100 /* can we wait for an event? */
#define PPS_CANPOLL 0x200 /* bit reserved for future use */
/* Kernel actions */
#define PPS_ECHOASSERT 0x40 /* feed back assert event to output */
#define PPS_ECHOCLEAR 0x80 /* feed back clear event to output */
/* Timestamp formats */
#define PPS_TSFMT_TSPEC 0x1000 /* select timespec format */
#define PPS_TSFMT_NTPFP 0x2000 /* select NTP format */
/*
* 3.4.4 New functions: disciplining the kernel timebase
*/
/* Kernel consumers */
#define PPS_KC_HARDPPS 0 /* hardpps() (or equivalent) */
#define PPS_KC_HARDPPS_PLL 1 /* hardpps() constrained to
use a phase-locked loop */
#define PPS_KC_HARDPPS_FLL 2 /* hardpps() constrained to
use a frequency-locked loop */
/*
* Here begins the implementation-specific part!
*/
struct pps_fdata {
struct pps_kinfo info;
struct pps_ktime timeout;
};
struct pps_bind_args {
int tsformat; /* format of time stamps */
int edge; /* selected event type */
int consumer; /* selected kernel consumer */
};
#include <linux/ioctl.h>
#define PPS_GETPARAMS _IOR('p', 0xa1, struct pps_kparams *)
#define PPS_SETPARAMS _IOW('p', 0xa2, struct pps_kparams *)
#define PPS_GETCAP _IOR('p', 0xa3, int *)
#define PPS_FETCH _IOWR('p', 0xa4, struct pps_fdata *)
#define PPS_KC_BIND _IOW('p', 0xa5, struct pps_bind_args *)
#endif /* _PPS_H_ */
|