/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ /* * PPS API header * * Copyright (C) 2005-2009 Rodolfo Giometti <[email protected]> * * 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 … #define PPS_MAX_SOURCES … /* 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 … #define PPS_API_VERS … #define PPS_MAX_NAME_LEN … /* 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 { … }; struct pps_ktime_compat { … } __attribute__((packed, aligned …)); #define PPS_TIME_INVALID … struct pps_kinfo { … }; struct pps_kinfo_compat { … }; struct pps_kparams { … }; /* * 3.3 Mode bit definitions */ /* Device/implementation parameters */ #define PPS_CAPTUREASSERT … #define PPS_CAPTURECLEAR … #define PPS_CAPTUREBOTH … #define PPS_OFFSETASSERT … #define PPS_OFFSETCLEAR … #define PPS_CANWAIT … #define PPS_CANPOLL … /* Kernel actions */ #define PPS_ECHOASSERT … #define PPS_ECHOCLEAR … /* Timestamp formats */ #define PPS_TSFMT_TSPEC … #define PPS_TSFMT_NTPFP … /* * 3.4.4 New functions: disciplining the kernel timebase */ /* Kernel consumers */ #define PPS_KC_HARDPPS … #define PPS_KC_HARDPPS_PLL … #define PPS_KC_HARDPPS_FLL … /* * Here begins the implementation-specific part! */ struct pps_fdata { … }; struct pps_fdata_compat { … }; struct pps_bind_args { … }; #include <linux/ioctl.h> #define PPS_GETPARAMS … #define PPS_SETPARAMS … #define PPS_GETCAP … #define PPS_FETCH … #define PPS_KC_BIND … #endif /* _PPS_H_ */
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