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pps.h
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/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ /* * 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; }; struct pps_ktime_compat { __s64 sec; __s32 nsec; __u32 flags; } __attribute__((packed, aligned(4))); #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_kinfo_compat { __u32 assert_sequence; /* seq. num. of assert event */ __u32 clear_sequence; /* seq. num. of clear event */ struct pps_ktime_compat assert_tu; /* time of assert event */ struct pps_ktime_compat 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 event */ #define PPS_OFFSETCLEAR 0x20 /* apply compensation for clear event */ #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_fdata_compat { struct pps_kinfo_compat info; struct pps_ktime_compat 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_ */
/home/sudancam/../../usr/include/linux/wimax/../pps.h