From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/include/linux/pps_kernel.h | 140 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 140 insertions(+) create mode 100644 kernel/include/linux/pps_kernel.h (limited to 'kernel/include/linux/pps_kernel.h') diff --git a/kernel/include/linux/pps_kernel.h b/kernel/include/linux/pps_kernel.h new file mode 100644 index 000000000..1d2cd2124 --- /dev/null +++ b/kernel/include/linux/pps_kernel.h @@ -0,0 +1,140 @@ +/* + * PPS API kernel header + * + * Copyright (C) 2009 Rodolfo Giometti + * + * 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 LINUX_PPS_KERNEL_H +#define LINUX_PPS_KERNEL_H + +#include + +#include +#include +#include + +/* + * Global defines + */ + +struct pps_device; + +/* The specific PPS source info */ +struct pps_source_info { + char name[PPS_MAX_NAME_LEN]; /* simbolic name */ + char path[PPS_MAX_NAME_LEN]; /* path of connected device */ + int mode; /* PPS's allowed mode */ + + void (*echo)(struct pps_device *pps, + int event, void *data); /* PPS echo function */ + + struct module *owner; + struct device *dev; /* Parent device for device_create */ +}; + +struct pps_event_time { +#ifdef CONFIG_NTP_PPS + struct timespec ts_raw; +#endif /* CONFIG_NTP_PPS */ + struct timespec ts_real; +}; + +/* The main struct */ +struct pps_device { + struct pps_source_info info; /* PSS source info */ + + struct pps_kparams params; /* PPS's current params */ + + __u32 assert_sequence; /* PPS' assert event seq # */ + __u32 clear_sequence; /* PPS' clear event seq # */ + struct pps_ktime assert_tu; + struct pps_ktime clear_tu; + int current_mode; /* PPS mode at event time */ + + unsigned int last_ev; /* last PPS event id */ + wait_queue_head_t queue; /* PPS event queue */ + + unsigned int id; /* PPS source unique ID */ + void const *lookup_cookie; /* pps_lookup_dev only */ + struct cdev cdev; + struct device *dev; + struct fasync_struct *async_queue; /* fasync method */ + spinlock_t lock; +}; + +/* + * Global variables + */ + +extern const struct attribute_group *pps_groups[]; + +/* + * Internal functions. + * + * These are not actually part of the exported API, but this is a + * convenient header file to put them in. + */ + +extern int pps_register_cdev(struct pps_device *pps); +extern void pps_unregister_cdev(struct pps_device *pps); + +/* + * Exported functions + */ + +extern struct pps_device *pps_register_source( + struct pps_source_info *info, int default_params); +extern void pps_unregister_source(struct pps_device *pps); +extern void pps_event(struct pps_device *pps, + struct pps_event_time *ts, int event, void *data); +/* Look up a pps device by magic cookie */ +struct pps_device *pps_lookup_dev(void const *cookie); + +static inline void timespec_to_pps_ktime(struct pps_ktime *kt, + struct timespec ts) +{ + kt->sec = ts.tv_sec; + kt->nsec = ts.tv_nsec; +} + +#ifdef CONFIG_NTP_PPS + +static inline void pps_get_ts(struct pps_event_time *ts) +{ + getnstime_raw_and_real(&ts->ts_raw, &ts->ts_real); +} + +#else /* CONFIG_NTP_PPS */ + +static inline void pps_get_ts(struct pps_event_time *ts) +{ + getnstimeofday(&ts->ts_real); +} + +#endif /* CONFIG_NTP_PPS */ + +/* Subtract known time delay from PPS event time(s) */ +static inline void pps_sub_ts(struct pps_event_time *ts, struct timespec delta) +{ + ts->ts_real = timespec_sub(ts->ts_real, delta); +#ifdef CONFIG_NTP_PPS + ts->ts_raw = timespec_sub(ts->ts_raw, delta); +#endif +} + +#endif /* LINUX_PPS_KERNEL_H */ + -- cgit 1.2.3-korg