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replace common qcom sources with samsung ones

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This commit is contained in:
SaschaNes
2025-08-12 22:13:00 +02:00
parent ba24dcded9
commit 6f7753de11
5682 changed files with 2450203 additions and 103634 deletions
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33
qcom/opensource/location/gnsspps/Android.bp Normal file
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cc_library_shared {
name: "libgnsspps",
vendor: true,
shared_libs: [
"libutils",
"libcutils",
"libgps.utils",
"liblog",
],
srcs: ["gnsspps.c"],
cflags: [
"-fno-short-enums",
"-D_ANDROID_",
] + GNSS_CFLAGS, //# Includes
header_libs: [
"libgps.utils_headers",
"libloc_pla_headers",
],
}
cc_library_headers {
name: "libgnsspps_headers",
export_include_dirs: ["."],
vendor: true,
}

36
qcom/opensource/location/gnsspps/Makefile.am Normal file
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AM_CFLAGS = \
$(LOCPLA_CFLAGS) \
$(GPSUTILS_CFLAGS) \
-I./
ACLOCAL_AMFLAGS = -I m4
libgnsspps_la_SOURCES = \
gnsspps.c
if USE_GLIB
libgnsspps_la_CFLAGS = -DUSE_GLIB $(AM_CFLAGS) @GLIB_CFLAGS@
libgnsspps_la_LDFLAGS = -lstdc++ -Wl,-z,defs -lpthread @GLIB_LIBS@ -shared -version-info 1:0:0
libgnsspps_la_CPPFLAGS = -DUSE_GLIB $(AM_CFLAGS) $(AM_CPPFLAGS) @GLIB_CFLAGS@
else
libgnsspps_la_CFLAGS = $(AM_CFLAGS)
libgnsspps_la_LDFLAGS = -Wl,-z,defs -lpthread -shared -version-info 1:0:0
libgnsspps_la_CPPFLAGS = $(AM_CFLAGS) $(AM_CPPFLAGS)
endif
libgnsspps_la_LIBADD = -lstdc++ $(GPSUTILS_LIBS)
library_include_HEADERS = \
gnsspps.h
#Create and Install libraries
lib_LTLIBRARIES = libgnsspps.la
library_includedir = $(pkgincludedir)
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = gnsspps.pc
EXTRA_DIST = $(pkgconfig_DATA)

82
qcom/opensource/location/gnsspps/configure.ac Normal file
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# configure.ac -- Autoconf script for gps lbs-core
#
# Process this file with autoconf to produce a configure script
# Requires autoconf tool later than 2.61
AC_PREREQ(2.61)
# Initialize the gps lbs-core package version 1.0.0
AC_INIT([gnsspps],1.0.0)
# Does not strictly follow GNU Coding standards
AM_INIT_AUTOMAKE([foreign subdir-objects])
# Disables auto rebuilding of configure, Makefile.ins
AM_MAINTAINER_MODE
# Verifies the --srcdir is correct by checking for the path
AC_CONFIG_SRCDIR([Makefile.am])
# defines some macros variable to be included by source
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIR([m4])
# Checks for programs.
AC_PROG_LIBTOOL
AC_PROG_CXX
AC_PROG_CC
AM_PROG_CC_C_O
AC_PROG_AWK
AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
PKG_PROG_PKG_CONFIG
# Checks for libraries.
PKG_CHECK_MODULES([GPSUTILS], [qcom-gps-utils])
AC_SUBST([GPSUTILS_CFLAGS])
AC_SUBST([GPSUTILS_LIBS])
AC_ARG_WITH([core_includes],
AC_HELP_STRING([--with-core-includes=@<:@dir@:>@],
[Specify the location of the core headers]),
[core_incdir=$withval],
with_core_includes=no)
if test "x$with_core_includes" != "xno"; then
CPPFLAGS="${CPPFLAGS} -I${core_incdir}"
fi
AC_ARG_WITH([locpla_includes],
AC_HELP_STRING([--with-locpla-includes=@<:@dir@:>@],
[specify the path to locpla-includes in loc-pla_git.bb]),
[locpla_incdir=$withval],
with_locpla_includes=no)
if test "x$with_locpla_includes" != "xno"; then
AC_SUBST(LOCPLA_CFLAGS, "-I${locpla_incdir}")
fi
AC_SUBST([CPPFLAGS])
AC_ARG_WITH([glib],
AC_HELP_STRING([--with-glib],
[enable glib, building HLOS systems which use glib]))
if (test "x${with_glib}" = "xyes"); then
AC_DEFINE(ENABLE_USEGLIB, 1, [Define if HLOS systems uses glib])
PKG_CHECK_MODULES(GTHREAD, gthread-2.0 >= 2.16, dummy=yes,
AC_MSG_ERROR(GThread >= 2.16 is required))
PKG_CHECK_MODULES(GLIB, glib-2.0 >= 2.16, dummy=yes,
AC_MSG_ERROR(GLib >= 2.16 is required))
GLIB_CFLAGS="$GLIB_CFLAGS $GTHREAD_CFLAGS"
GLIB_LIBS="$GLIB_LIBS $GTHREAD_LIBS"
AC_SUBST(GLIB_CFLAGS)
AC_SUBST(GLIB_LIBS)
fi
AM_CONDITIONAL(USE_GLIB, test "x${with_glib}" = "xyes")
AC_CONFIG_FILES([ \
Makefile \
gnsspps.pc
])
AC_OUTPUT

440
qcom/opensource/location/gnsspps/gnsspps.c Normal file
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/* Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundatoin, nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
Changes from Qualcomm Innovation Center are provided under the following license:
Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted (subject to the limitations in the
disclaimer below) provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
* Neither the name of Qualcomm Innovation Center, Inc. nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <log_util.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <pthread.h>
#include <timepps.h>
#include <linux/types.h>
#include <stdbool.h>
#include "loc_cfg.h"
#include <inttypes.h>
#include <time.h>
#include <math.h>
#define BILLION_NSEC (1E9)
typedef struct timespec pps_sync_time;
//DRsync kernel timestamp
static struct timespec drsyncKernelTs = {0,0};
//DRsync userspace timestamp
static struct timespec drsyncUserTs = {0,0};
static struct timespec prevDrsyncKernelTs = {0,0};
//flag to stop fetching timestamp
static int isActive = 0;
static pthread_t threadId;
static pps_handle handle;
static pthread_mutex_t ts_lock;
static int skipPPSPulseCnt = 0;
static int gnssOutageInSec = 1;
static loc_param_s_type gps_conf_param_table[] =
{
{"IGNORE_PPS_PULSE_COUNT", &skipPPSPulseCnt, NULL, 'n'},
{"GNSS_OUTAGE_DURATION", &gnssOutageInSec, NULL, 'n'}
};
typedef enum {
KERNEL_REPORTED_CLOCK_BOOTTIME = 0,
KERNEL_REPORTED_CLOCK_REALTIME,
KERNEL_REPORTED_CLOCK_UNKNOWN = 0xfe,
KERNEL_REPORTED_CLOCK_MAX = 0xff
} kernel_reported_time_e;
/* checks the PPS source and opens it */
int check_device(char *path, pps_handle *handle)
{
int ret;
/* Try to find the source by using the supplied "path" name */
ret = open(path, O_RDONLY);
if (ret < 0)
{
LOC_LOGV("%s:%d unable to open device %s", __func__, __LINE__, path);
return ret;
}
/* Open the PPS source */
ret = pps_create(ret, handle);
if (ret < 0)
{
LOC_LOGV( "%s:%d cannot create a PPS source from device %s", __func__, __LINE__, path);
return -1;
}
return 0;
}
/* calculate the time difference between two given times in argument -
** returns the result in timeDifference parametter*/
static inline void calculate_time_difference(pps_sync_time time1,
pps_sync_time time2, pps_sync_time* timeDifference)
{
if (time2.tv_nsec < time1.tv_nsec) {
timeDifference->tv_sec = time2.tv_sec - 1 - time1.tv_sec;
timeDifference->tv_nsec = BILLION_NSEC + time2.tv_nsec - time1.tv_nsec;
} else {
timeDifference->tv_sec = time2.tv_sec - time1.tv_sec;
timeDifference->tv_nsec = time2.tv_nsec - time1.tv_nsec;
}
}
/*add two timespec values and return the result in third resultTime parameter*/
static inline void pps_sync_time_add(pps_sync_time time1,
pps_sync_time time2, pps_sync_time* resultTime)
{
if (time2.tv_nsec + time1.tv_nsec >= BILLION_NSEC) {
resultTime->tv_sec = time2.tv_sec + time1.tv_sec + 1;
resultTime->tv_nsec = time2.tv_nsec + time1.tv_nsec - BILLION_NSEC;
} else {
resultTime->tv_sec = time2.tv_sec + time1.tv_sec;
resultTime->tv_nsec = time2.tv_nsec + time1.tv_nsec;
}
}
#define MAX_REALTIME_OFFSET_DELTA_DIFFERENCE 10
#define MAX_PPS_KERNEL_TO_USERSPACE_LATENCY 100 /*in milli-second*/
static inline double convertTimeToMilliSec(pps_sync_time timeToConvert)
{
return ((double)(timeToConvert.tv_sec * 1000) + (double)(timeToConvert.tv_nsec * 0.000001));
}
/*returnValue: 1 = offsetTime OK, 0 = offsetTime NOT OK*/
static inline bool isTimeOffsetOk(pps_sync_time offsetTime)
{
double offsetInMillis = convertTimeToMilliSec(offsetTime);
return (fabs(offsetInMillis) <= MAX_REALTIME_OFFSET_DELTA_DIFFERENCE)? true: false;
}
/*check whether kernel PPS timestamp is a CLOCK_BOOTTIME or CLOCK_REALTIME*/
static kernel_reported_time_e get_reported_time_type(pps_sync_time userBootTs,
pps_sync_time userRealTs,
pps_sync_time kernelTs)
{
double userRealMs, userBootMs, kernelTsMs;
kernel_reported_time_e reportedTime = KERNEL_REPORTED_CLOCK_UNKNOWN;
userRealMs = convertTimeToMilliSec(userRealTs);
userBootMs = convertTimeToMilliSec(userBootTs);
kernelTsMs = convertTimeToMilliSec(kernelTs);
if(fabs(userBootMs - kernelTsMs) <= MAX_PPS_KERNEL_TO_USERSPACE_LATENCY) {
reportedTime = KERNEL_REPORTED_CLOCK_BOOTTIME;
} else if (fabs(userRealMs - kernelTsMs) <= MAX_PPS_KERNEL_TO_USERSPACE_LATENCY) {
reportedTime = KERNEL_REPORTED_CLOCK_REALTIME;
} else {
reportedTime = KERNEL_REPORTED_CLOCK_UNKNOWN;
}
LOC_LOGV("[%s] Detected PPS timestamp type (0:Boot, 1:Real, 0xfe:Unknown):0x%x",
__func__, reportedTime);
return reportedTime;
}
/*compute_real_to_boot_time - converts the kernel real time stamp to boot time reference*/
static int compute_real_to_boot_time(pps_info ppsFetchTime)
{
int retVal = 0;
/*Offset between REAL_TIME to BOOT_TIME*/
static pps_sync_time time_offset = {0, 0};
pps_sync_time drSyncUserRealTs, drSyncUserBootTs;
pps_sync_time deltaRealToBootTime = {0, 0};
pps_sync_time deltaOffsetTime = {0, 0};
kernel_reported_time_e ppsTimeType;
retVal = clock_gettime(CLOCK_BOOTTIME,&drSyncUserBootTs);
if (retVal != 0) {
LOC_LOGE("[%s]Error Reading CLOCK_BOOTTIME", __func__);
retVal = -1;
goto exit0;
}
retVal = clock_gettime(CLOCK_REALTIME,&drSyncUserRealTs);
if (retVal != 0){
LOC_LOGE("[%s]Error Reading CLOCK_REALTIME", __func__);
retVal = -1;
goto exit0;
}
ppsTimeType = get_reported_time_type(drSyncUserBootTs, drSyncUserRealTs, ppsFetchTime);
if (KERNEL_REPORTED_CLOCK_BOOTTIME == ppsTimeType) {
/*Store PPS kernel time*/
drsyncKernelTs.tv_sec = ppsFetchTime.tv_sec;
drsyncKernelTs.tv_nsec = ppsFetchTime.tv_nsec;
/*Store User PPS fetch time*/
drsyncUserTs.tv_sec = drSyncUserBootTs.tv_sec;
drsyncUserTs.tv_nsec = drSyncUserBootTs.tv_nsec;
LOC_LOGV("[compute_real_to_boot] PPS TimeType CLOCK_BOOTTIME -- report as is");
retVal = 0;
} else if (KERNEL_REPORTED_CLOCK_REALTIME == ppsTimeType) {
/* Calculate time difference between REALTIME to BOOT_TIME*/
calculate_time_difference(drSyncUserRealTs, drSyncUserBootTs, &deltaRealToBootTime);
/* Calculate the time difference between stored offset and computed one now*/
calculate_time_difference(time_offset, deltaRealToBootTime, &deltaOffsetTime);
if ((0 == time_offset.tv_sec && 0 == time_offset.tv_nsec) ||
(isTimeOffsetOk(deltaOffsetTime))) {
/* if Time Offset does not change beyond threshold then
** convert to boot time*/
drsyncUserTs.tv_sec = drSyncUserBootTs.tv_sec;
drsyncUserTs.tv_nsec = drSyncUserBootTs.tv_nsec;
pps_sync_time_add(ppsFetchTime, deltaRealToBootTime, &drsyncKernelTs);
retVal = 0;
} else {
/*The offset is too high, jump detected in realTime tick, either
** wall clock changed by user of NTP, skip PPS, re-sync @ next tick
*/
LOC_LOGE("[%s] Jump detected in CLOCK_REALTIME - Offset %ld:%ld", __func__,
deltaOffsetTime.tv_sec, deltaOffsetTime.tv_nsec);
retVal = -1;
}
time_offset.tv_sec = deltaRealToBootTime.tv_sec;
time_offset.tv_nsec = deltaRealToBootTime.tv_nsec;
LOC_LOGV("[compute_real_to_boot] KernelRealTs %ld:%ld ComputedTs %ld:%ld RealTs %ld:%ld BootTs %ld:%ld Offset %ld:%ld retVal %d ",
ppsFetchTime.tv_sec, ppsFetchTime.tv_nsec,
drsyncKernelTs.tv_sec, drsyncKernelTs.tv_nsec, drSyncUserRealTs.tv_sec,
drSyncUserRealTs.tv_nsec, drsyncUserTs.tv_sec, drsyncUserTs.tv_nsec,
time_offset.tv_sec, time_offset.tv_nsec, retVal);
} else {
LOC_LOGV("[compute_real_to_boot] PPS TimeType Unknown -- KernelTs %ld:%ld userRealTs %ld:%ld userBootTs %ld:%ld",
ppsFetchTime.tv_sec, ppsFetchTime.tv_nsec,
drSyncUserRealTs.tv_sec, drSyncUserRealTs.tv_nsec,
drsyncUserTs.tv_sec, drsyncUserTs.tv_nsec);
retVal = -1;
}
exit0:
return retVal;
}
/* fetches the timestamp from the PPS source */
int read_pps(pps_handle *handle)
{
struct timespec timeout;
pps_info infobuf;
int ret;
static bool isFirstPulseReceived = false;
static unsigned int skipPulseCnt = 0;
// 3sec timeout
timeout.tv_sec = 3;
timeout.tv_nsec = 0;
ret = pps_fetch(*handle, PPS_TSFMT_TSPEC, &infobuf, &timeout);
if (ret < 0 && ret !=-EINTR)
{
LOC_LOGV("%s:%d pps_fetch() error %d", __func__, __LINE__, ret);
return -1;
}
if (!isFirstPulseReceived && (skipPPSPulseCnt > 0)) {
skipPulseCnt = skipPPSPulseCnt;
isFirstPulseReceived = true;
LOC_LOGV("%s:%d first pps pulse received %ld (sec) %ld (nsec)",
__func__, __LINE__, infobuf.tv_sec, infobuf.tv_nsec)
}else if (isFirstPulseReceived && (skipPPSPulseCnt > 0) &&
((infobuf.tv_sec - prevDrsyncKernelTs.tv_sec) > gnssOutageInSec)) {
LOC_LOGV("%s:%d long RF outage detected, ignore next %d PPS Pulses",
__func__, __LINE__, skipPPSPulseCnt)
skipPulseCnt = skipPPSPulseCnt;
}
prevDrsyncKernelTs.tv_sec = infobuf.tv_sec;
prevDrsyncKernelTs.tv_nsec = infobuf.tv_nsec;
/* check if this dr sync pulse need to be ignored or not*/
if (skipPulseCnt > 0) {
LOC_LOGV("%s:%d skip pps count %d, ignoring this pps pulse %ld (sec) %ld (nsec)",
__func__,__LINE__, skipPulseCnt, infobuf.tv_sec, infobuf.tv_nsec);
skipPulseCnt--;
return 0;
}
/* update dr syncpulse time*/
pthread_mutex_lock(&ts_lock);
ret = compute_real_to_boot_time(infobuf);
pthread_mutex_unlock(&ts_lock);
return 0;
}
#ifdef __cplusplus
extern "C" {
#endif
/* infinitely calls read_pps() */
void *thread_handle(void *input)
{
int ret;
if(input != NULL)
{
LOC_LOGV("%s:%d Thread Input is present", __func__, __LINE__);
}
while(isActive)
{
ret = read_pps(&handle);
if (ret == -1 && errno != ETIMEDOUT )
{
LOC_LOGV("%s:%d Could not fetch PPS source", __func__, __LINE__);
}
}
return NULL;
}
/* opens the device and fetches from PPS source */
int initPPS(char *devname)
{
int ret,pid;
isActive = 1;
ret = check_device(devname, &handle);
if (ret < 0)
{
LOC_LOGV("%s:%d Could not find PPS source", __func__, __LINE__);
return 0;
}
UTIL_READ_CONF(LOC_PATH_GPS_CONF, gps_conf_param_table);
pthread_mutex_init(&ts_lock, NULL);
pid = pthread_create(&threadId, NULL, &thread_handle, NULL);
if(pid != 0)
{
LOC_LOGV("%s:%d Could not create thread in InitPPS", __func__, __LINE__);
isActive = 0;
return 0;
}
return 1;
}
/* stops fetching and closes the device */
void deInitPPS()
{
pthread_mutex_lock(&ts_lock);
if (0 == isActive) {
LOC_LOGV("%s:%d deInitPPS called before initPPS", __func__, __LINE__);
pthread_mutex_unlock(&ts_lock);
return;
}
isActive = 0;
pthread_mutex_unlock(&ts_lock);
pthread_join(threadId, NULL);
pthread_mutex_destroy(&ts_lock);
pps_destroy(handle);
}
/* retrieves DRsync kernel timestamp,DRsync userspace timestamp
and updates current timestamp */
/* Returns:
* 1. @Param out DRsync kernel timestamp
* 2. @Param out DRsync userspace timestamp
* 3. @Param out current timestamp
*/
int getPPS(struct timespec *fineKernelTs ,struct timespec *currentTs,
struct timespec *fineUserTs)
{
int ret = 0;
pthread_mutex_lock(&ts_lock);
if (0 != isActive) {
fineKernelTs->tv_sec = drsyncKernelTs.tv_sec;
fineKernelTs->tv_nsec = drsyncKernelTs.tv_nsec;
fineUserTs->tv_sec = drsyncUserTs.tv_sec;
fineUserTs->tv_nsec = drsyncUserTs.tv_nsec;
ret = clock_gettime(CLOCK_BOOTTIME,currentTs);
} else {
LOC_LOGV("%s:%d No active thread to read PPS - call initPPS first", __func__, __LINE__);
}
pthread_mutex_unlock(&ts_lock);
if(ret != 0)
{
LOC_LOGV("%s:%d clock_gettime() error",__func__,__LINE__);
return 0;
}
return 1;
}
#ifdef __cplusplus
}
#endif

45
qcom/opensource/location/gnsspps/gnsspps.h Normal file
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/* Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundatoin, nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _GNSSPPS_H
#define _GNSSPPS_H
#ifdef __cplusplus
extern "C" {
#endif
/* opens the device and fetches from PPS source */
int initPPS(char *devname);
/* updates the fine time stamp */
int getPPS(struct timespec *current_ts, struct timespec *current_boottime, struct timespec *last_boottime);
/* stops fetching and closes the device */
void deInitPPS();
#ifdef __cplusplus
}
#endif
#endif

10
qcom/opensource/location/gnsspps/gnsspps.pc.in Normal file
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@@ -0,0 +1,10 @@
prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@
Name: gnsspps
Description: QTI GPS gnsspps
Version: @VERSION
Libs: -L${libdir} -lgnsspps
Cflags: -I${includedir}/gnsspps

106
qcom/opensource/location/gnsspps/timepps.h Normal file
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/* Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundatoin, nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <errno.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <linux/types.h>
#include <linux/pps.h>
#ifndef _TIMEPPS_H
#define _TIMEPPS_H
#ifdef __cplusplus
extern "C" {
#endif
/* time of assert event */
typedef struct timespec pps_info;
/* represents pps source */
typedef int pps_handle;
/* Open the PPS source */
static __inline int pps_create(int source, pps_handle *handle)
{
int ret;
struct pps_kparams dummy;
if (!handle)
{
errno = EINVAL;
return -1;
}
/* check if current device is valid pps */
ret = ioctl(source, PPS_GETPARAMS, &dummy);
if (ret)
{
errno = EOPNOTSUPP;
return -1;
}
*handle = source;
return 0;
}
/* close the pps source */
static __inline int pps_destroy(pps_handle handle)
{
return close(handle);
}
/*reads timestamp from pps device*/
static __inline int pps_fetch(pps_handle handle, const int tsformat,
pps_info *ppsinfobuf,
const struct timespec *timeout)
{
struct pps_fdata fdata;
int ret;
if (tsformat != PPS_TSFMT_TSPEC)
{
errno = EINVAL;
return -1;
}
if (timeout)
{
fdata.timeout.sec = timeout->tv_sec;
fdata.timeout.nsec = timeout->tv_nsec;
fdata.timeout.flags = ~PPS_TIME_INVALID;
}
else
{
fdata.timeout.flags = PPS_TIME_INVALID;
}
ret = ioctl(handle, PPS_FETCH, &fdata);
ppsinfobuf->tv_sec = fdata.info.assert_tu.sec;
ppsinfobuf->tv_nsec = fdata.info.assert_tu.nsec;
return ret;
}
#ifdef __cplusplus
}
#endif
#endif