[PATCH 6/9] selftests: move ptp tests from Documentation/ptp

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Move ptp tests from Documentation/ptp to selftests/ptp.

Signed-off-by: Shuah Khan <shuahkh@xxxxxxxxxxxxxxx>
---
 Documentation/ptp/.gitignore           |   1 -
 Documentation/ptp/Makefile             |   8 -
 Documentation/ptp/testptp.c            | 523 ---------------------------------
 Documentation/ptp/testptp.mk           |  33 ---
 tools/testing/selftests/ptp/.gitignore |   1 +
 tools/testing/selftests/ptp/Makefile   |   8 +
 tools/testing/selftests/ptp/testptp.c  | 523 +++++++++++++++++++++++++++++++++
 tools/testing/selftests/ptp/testptp.mk |  33 +++
 8 files changed, 565 insertions(+), 565 deletions(-)
 delete mode 100644 Documentation/ptp/.gitignore
 delete mode 100644 Documentation/ptp/Makefile
 delete mode 100644 Documentation/ptp/testptp.c
 delete mode 100644 Documentation/ptp/testptp.mk
 create mode 100644 tools/testing/selftests/ptp/.gitignore
 create mode 100644 tools/testing/selftests/ptp/Makefile
 create mode 100644 tools/testing/selftests/ptp/testptp.c
 create mode 100644 tools/testing/selftests/ptp/testptp.mk

diff --git a/Documentation/ptp/.gitignore b/Documentation/ptp/.gitignore
deleted file mode 100644
index f562e49..0000000
--- a/Documentation/ptp/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-testptp
diff --git a/Documentation/ptp/Makefile b/Documentation/ptp/Makefile
deleted file mode 100644
index 293d6c0..0000000
--- a/Documentation/ptp/Makefile
+++ /dev/null
@@ -1,8 +0,0 @@
-# List of programs to build
-hostprogs-y := testptp
-
-# Tell kbuild to always build the programs
-always := $(hostprogs-y)
-
-HOSTCFLAGS_testptp.o += -I$(objtree)/usr/include
-HOSTLOADLIBES_testptp := -lrt
diff --git a/Documentation/ptp/testptp.c b/Documentation/ptp/testptp.c
deleted file mode 100644
index 5d2eae1..0000000
--- a/Documentation/ptp/testptp.c
+++ /dev/null
@@ -1,523 +0,0 @@
-/*
- * PTP 1588 clock support - User space test program
- *
- * Copyright (C) 2010 OMICRON electronics GmbH
- *
- *  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.
- */
-#define _GNU_SOURCE
-#define __SANE_USERSPACE_TYPES__        /* For PPC64, to get LL64 types */
-#include <errno.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <math.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <sys/timex.h>
-#include <sys/types.h>
-#include <time.h>
-#include <unistd.h>
-
-#include <linux/ptp_clock.h>
-
-#define DEVICE "/dev/ptp0"
-
-#ifndef ADJ_SETOFFSET
-#define ADJ_SETOFFSET 0x0100
-#endif
-
-#ifndef CLOCK_INVALID
-#define CLOCK_INVALID -1
-#endif
-
-/* clock_adjtime is not available in GLIBC < 2.14 */
-#if !__GLIBC_PREREQ(2, 14)
-#include <sys/syscall.h>
-static int clock_adjtime(clockid_t id, struct timex *tx)
-{
-	return syscall(__NR_clock_adjtime, id, tx);
-}
-#endif
-
-static clockid_t get_clockid(int fd)
-{
-#define CLOCKFD 3
-#define FD_TO_CLOCKID(fd)	((~(clockid_t) (fd) << 3) | CLOCKFD)
-
-	return FD_TO_CLOCKID(fd);
-}
-
-static void handle_alarm(int s)
-{
-	printf("received signal %d\n", s);
-}
-
-static int install_handler(int signum, void (*handler)(int))
-{
-	struct sigaction action;
-	sigset_t mask;
-
-	/* Unblock the signal. */
-	sigemptyset(&mask);
-	sigaddset(&mask, signum);
-	sigprocmask(SIG_UNBLOCK, &mask, NULL);
-
-	/* Install the signal handler. */
-	action.sa_handler = handler;
-	action.sa_flags = 0;
-	sigemptyset(&action.sa_mask);
-	sigaction(signum, &action, NULL);
-
-	return 0;
-}
-
-static long ppb_to_scaled_ppm(int ppb)
-{
-	/*
-	 * The 'freq' field in the 'struct timex' is in parts per
-	 * million, but with a 16 bit binary fractional field.
-	 * Instead of calculating either one of
-	 *
-	 *    scaled_ppm = (ppb / 1000) << 16  [1]
-	 *    scaled_ppm = (ppb << 16) / 1000  [2]
-	 *
-	 * we simply use double precision math, in order to avoid the
-	 * truncation in [1] and the possible overflow in [2].
-	 */
-	return (long) (ppb * 65.536);
-}
-
-static int64_t pctns(struct ptp_clock_time *t)
-{
-	return t->sec * 1000000000LL + t->nsec;
-}
-
-static void usage(char *progname)
-{
-	fprintf(stderr,
-		"usage: %s [options]\n"
-		" -a val     request a one-shot alarm after 'val' seconds\n"
-		" -A val     request a periodic alarm every 'val' seconds\n"
-		" -c         query the ptp clock's capabilities\n"
-		" -d name    device to open\n"
-		" -e val     read 'val' external time stamp events\n"
-		" -f val     adjust the ptp clock frequency by 'val' ppb\n"
-		" -g         get the ptp clock time\n"
-		" -h         prints this message\n"
-		" -i val     index for event/trigger\n"
-		" -k val     measure the time offset between system and phc clock\n"
-		"            for 'val' times (Maximum 25)\n"
-		" -l         list the current pin configuration\n"
-		" -L pin,val configure pin index 'pin' with function 'val'\n"
-		"            the channel index is taken from the '-i' option\n"
-		"            'val' specifies the auxiliary function:\n"
-		"            0 - none\n"
-		"            1 - external time stamp\n"
-		"            2 - periodic output\n"
-		" -p val     enable output with a period of 'val' nanoseconds\n"
-		" -P val     enable or disable (val=1|0) the system clock PPS\n"
-		" -s         set the ptp clock time from the system time\n"
-		" -S         set the system time from the ptp clock time\n"
-		" -t val     shift the ptp clock time by 'val' seconds\n"
-		" -T val     set the ptp clock time to 'val' seconds\n",
-		progname);
-}
-
-int main(int argc, char *argv[])
-{
-	struct ptp_clock_caps caps;
-	struct ptp_extts_event event;
-	struct ptp_extts_request extts_request;
-	struct ptp_perout_request perout_request;
-	struct ptp_pin_desc desc;
-	struct timespec ts;
-	struct timex tx;
-
-	static timer_t timerid;
-	struct itimerspec timeout;
-	struct sigevent sigevent;
-
-	struct ptp_clock_time *pct;
-	struct ptp_sys_offset *sysoff;
-
-
-	char *progname;
-	unsigned int i;
-	int c, cnt, fd;
-
-	char *device = DEVICE;
-	clockid_t clkid;
-	int adjfreq = 0x7fffffff;
-	int adjtime = 0;
-	int capabilities = 0;
-	int extts = 0;
-	int gettime = 0;
-	int index = 0;
-	int list_pins = 0;
-	int oneshot = 0;
-	int pct_offset = 0;
-	int n_samples = 0;
-	int periodic = 0;
-	int perout = -1;
-	int pin_index = -1, pin_func;
-	int pps = -1;
-	int seconds = 0;
-	int settime = 0;
-
-	int64_t t1, t2, tp;
-	int64_t interval, offset;
-
-	progname = strrchr(argv[0], '/');
-	progname = progname ? 1+progname : argv[0];
-	while (EOF != (c = getopt(argc, argv, "a:A:cd:e:f:ghi:k:lL:p:P:sSt:T:v"))) {
-		switch (c) {
-		case 'a':
-			oneshot = atoi(optarg);
-			break;
-		case 'A':
-			periodic = atoi(optarg);
-			break;
-		case 'c':
-			capabilities = 1;
-			break;
-		case 'd':
-			device = optarg;
-			break;
-		case 'e':
-			extts = atoi(optarg);
-			break;
-		case 'f':
-			adjfreq = atoi(optarg);
-			break;
-		case 'g':
-			gettime = 1;
-			break;
-		case 'i':
-			index = atoi(optarg);
-			break;
-		case 'k':
-			pct_offset = 1;
-			n_samples = atoi(optarg);
-			break;
-		case 'l':
-			list_pins = 1;
-			break;
-		case 'L':
-			cnt = sscanf(optarg, "%d,%d", &pin_index, &pin_func);
-			if (cnt != 2) {
-				usage(progname);
-				return -1;
-			}
-			break;
-		case 'p':
-			perout = atoi(optarg);
-			break;
-		case 'P':
-			pps = atoi(optarg);
-			break;
-		case 's':
-			settime = 1;
-			break;
-		case 'S':
-			settime = 2;
-			break;
-		case 't':
-			adjtime = atoi(optarg);
-			break;
-		case 'T':
-			settime = 3;
-			seconds = atoi(optarg);
-			break;
-		case 'h':
-			usage(progname);
-			return 0;
-		case '?':
-		default:
-			usage(progname);
-			return -1;
-		}
-	}
-
-	fd = open(device, O_RDWR);
-	if (fd < 0) {
-		fprintf(stderr, "opening %s: %s\n", device, strerror(errno));
-		return -1;
-	}
-
-	clkid = get_clockid(fd);
-	if (CLOCK_INVALID == clkid) {
-		fprintf(stderr, "failed to read clock id\n");
-		return -1;
-	}
-
-	if (capabilities) {
-		if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {
-			perror("PTP_CLOCK_GETCAPS");
-		} else {
-			printf("capabilities:\n"
-			       "  %d maximum frequency adjustment (ppb)\n"
-			       "  %d programmable alarms\n"
-			       "  %d external time stamp channels\n"
-			       "  %d programmable periodic signals\n"
-			       "  %d pulse per second\n"
-			       "  %d programmable pins\n"
-			       "  %d cross timestamping\n",
-			       caps.max_adj,
-			       caps.n_alarm,
-			       caps.n_ext_ts,
-			       caps.n_per_out,
-			       caps.pps,
-			       caps.n_pins,
-			       caps.cross_timestamping);
-		}
-	}
-
-	if (0x7fffffff != adjfreq) {
-		memset(&tx, 0, sizeof(tx));
-		tx.modes = ADJ_FREQUENCY;
-		tx.freq = ppb_to_scaled_ppm(adjfreq);
-		if (clock_adjtime(clkid, &tx)) {
-			perror("clock_adjtime");
-		} else {
-			puts("frequency adjustment okay");
-		}
-	}
-
-	if (adjtime) {
-		memset(&tx, 0, sizeof(tx));
-		tx.modes = ADJ_SETOFFSET;
-		tx.time.tv_sec = adjtime;
-		tx.time.tv_usec = 0;
-		if (clock_adjtime(clkid, &tx) < 0) {
-			perror("clock_adjtime");
-		} else {
-			puts("time shift okay");
-		}
-	}
-
-	if (gettime) {
-		if (clock_gettime(clkid, &ts)) {
-			perror("clock_gettime");
-		} else {
-			printf("clock time: %ld.%09ld or %s",
-			       ts.tv_sec, ts.tv_nsec, ctime(&ts.tv_sec));
-		}
-	}
-
-	if (settime == 1) {
-		clock_gettime(CLOCK_REALTIME, &ts);
-		if (clock_settime(clkid, &ts)) {
-			perror("clock_settime");
-		} else {
-			puts("set time okay");
-		}
-	}
-
-	if (settime == 2) {
-		clock_gettime(clkid, &ts);
-		if (clock_settime(CLOCK_REALTIME, &ts)) {
-			perror("clock_settime");
-		} else {
-			puts("set time okay");
-		}
-	}
-
-	if (settime == 3) {
-		ts.tv_sec = seconds;
-		ts.tv_nsec = 0;
-		if (clock_settime(clkid, &ts)) {
-			perror("clock_settime");
-		} else {
-			puts("set time okay");
-		}
-	}
-
-	if (extts) {
-		memset(&extts_request, 0, sizeof(extts_request));
-		extts_request.index = index;
-		extts_request.flags = PTP_ENABLE_FEATURE;
-		if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) {
-			perror("PTP_EXTTS_REQUEST");
-			extts = 0;
-		} else {
-			puts("external time stamp request okay");
-		}
-		for (; extts; extts--) {
-			cnt = read(fd, &event, sizeof(event));
-			if (cnt != sizeof(event)) {
-				perror("read");
-				break;
-			}
-			printf("event index %u at %lld.%09u\n", event.index,
-			       event.t.sec, event.t.nsec);
-			fflush(stdout);
-		}
-		/* Disable the feature again. */
-		extts_request.flags = 0;
-		if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) {
-			perror("PTP_EXTTS_REQUEST");
-		}
-	}
-
-	if (list_pins) {
-		int n_pins = 0;
-		if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {
-			perror("PTP_CLOCK_GETCAPS");
-		} else {
-			n_pins = caps.n_pins;
-		}
-		for (i = 0; i < n_pins; i++) {
-			desc.index = i;
-			if (ioctl(fd, PTP_PIN_GETFUNC, &desc)) {
-				perror("PTP_PIN_GETFUNC");
-				break;
-			}
-			printf("name %s index %u func %u chan %u\n",
-			       desc.name, desc.index, desc.func, desc.chan);
-		}
-	}
-
-	if (oneshot) {
-		install_handler(SIGALRM, handle_alarm);
-		/* Create a timer. */
-		sigevent.sigev_notify = SIGEV_SIGNAL;
-		sigevent.sigev_signo = SIGALRM;
-		if (timer_create(clkid, &sigevent, &timerid)) {
-			perror("timer_create");
-			return -1;
-		}
-		/* Start the timer. */
-		memset(&timeout, 0, sizeof(timeout));
-		timeout.it_value.tv_sec = oneshot;
-		if (timer_settime(timerid, 0, &timeout, NULL)) {
-			perror("timer_settime");
-			return -1;
-		}
-		pause();
-		timer_delete(timerid);
-	}
-
-	if (periodic) {
-		install_handler(SIGALRM, handle_alarm);
-		/* Create a timer. */
-		sigevent.sigev_notify = SIGEV_SIGNAL;
-		sigevent.sigev_signo = SIGALRM;
-		if (timer_create(clkid, &sigevent, &timerid)) {
-			perror("timer_create");
-			return -1;
-		}
-		/* Start the timer. */
-		memset(&timeout, 0, sizeof(timeout));
-		timeout.it_interval.tv_sec = periodic;
-		timeout.it_value.tv_sec = periodic;
-		if (timer_settime(timerid, 0, &timeout, NULL)) {
-			perror("timer_settime");
-			return -1;
-		}
-		while (1) {
-			pause();
-		}
-		timer_delete(timerid);
-	}
-
-	if (perout >= 0) {
-		if (clock_gettime(clkid, &ts)) {
-			perror("clock_gettime");
-			return -1;
-		}
-		memset(&perout_request, 0, sizeof(perout_request));
-		perout_request.index = index;
-		perout_request.start.sec = ts.tv_sec + 2;
-		perout_request.start.nsec = 0;
-		perout_request.period.sec = 0;
-		perout_request.period.nsec = perout;
-		if (ioctl(fd, PTP_PEROUT_REQUEST, &perout_request)) {
-			perror("PTP_PEROUT_REQUEST");
-		} else {
-			puts("periodic output request okay");
-		}
-	}
-
-	if (pin_index >= 0) {
-		memset(&desc, 0, sizeof(desc));
-		desc.index = pin_index;
-		desc.func = pin_func;
-		desc.chan = index;
-		if (ioctl(fd, PTP_PIN_SETFUNC, &desc)) {
-			perror("PTP_PIN_SETFUNC");
-		} else {
-			puts("set pin function okay");
-		}
-	}
-
-	if (pps != -1) {
-		int enable = pps ? 1 : 0;
-		if (ioctl(fd, PTP_ENABLE_PPS, enable)) {
-			perror("PTP_ENABLE_PPS");
-		} else {
-			puts("pps for system time request okay");
-		}
-	}
-
-	if (pct_offset) {
-		if (n_samples <= 0 || n_samples > 25) {
-			puts("n_samples should be between 1 and 25");
-			usage(progname);
-			return -1;
-		}
-
-		sysoff = calloc(1, sizeof(*sysoff));
-		if (!sysoff) {
-			perror("calloc");
-			return -1;
-		}
-		sysoff->n_samples = n_samples;
-
-		if (ioctl(fd, PTP_SYS_OFFSET, sysoff))
-			perror("PTP_SYS_OFFSET");
-		else
-			puts("system and phc clock time offset request okay");
-
-		pct = &sysoff->ts[0];
-		for (i = 0; i < sysoff->n_samples; i++) {
-			t1 = pctns(pct+2*i);
-			tp = pctns(pct+2*i+1);
-			t2 = pctns(pct+2*i+2);
-			interval = t2 - t1;
-			offset = (t2 + t1) / 2 - tp;
-
-			printf("system time: %lld.%u\n",
-				(pct+2*i)->sec, (pct+2*i)->nsec);
-			printf("phc    time: %lld.%u\n",
-				(pct+2*i+1)->sec, (pct+2*i+1)->nsec);
-			printf("system time: %lld.%u\n",
-				(pct+2*i+2)->sec, (pct+2*i+2)->nsec);
-			printf("system/phc clock time offset is %" PRId64 " ns\n"
-			       "system     clock time delay  is %" PRId64 " ns\n",
-				offset, interval);
-		}
-
-		free(sysoff);
-	}
-
-	close(fd);
-	return 0;
-}
diff --git a/Documentation/ptp/testptp.mk b/Documentation/ptp/testptp.mk
deleted file mode 100644
index 4ef2d97..0000000
--- a/Documentation/ptp/testptp.mk
+++ /dev/null
@@ -1,33 +0,0 @@
-# PTP 1588 clock support - User space test program
-#
-# Copyright (C) 2010 OMICRON electronics GmbH
-#
-#  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.
-
-CC        = $(CROSS_COMPILE)gcc
-INC       = -I$(KBUILD_OUTPUT)/usr/include
-CFLAGS    = -Wall $(INC)
-LDLIBS    = -lrt
-PROGS     = testptp
-
-all: $(PROGS)
-
-testptp: testptp.o
-
-clean:
-	rm -f testptp.o
-
-distclean: clean
-	rm -f $(PROGS)
diff --git a/tools/testing/selftests/ptp/.gitignore b/tools/testing/selftests/ptp/.gitignore
new file mode 100644
index 0000000..f562e49
--- /dev/null
+++ b/tools/testing/selftests/ptp/.gitignore
@@ -0,0 +1 @@
+testptp
diff --git a/tools/testing/selftests/ptp/Makefile b/tools/testing/selftests/ptp/Makefile
new file mode 100644
index 0000000..293d6c0
--- /dev/null
+++ b/tools/testing/selftests/ptp/Makefile
@@ -0,0 +1,8 @@
+# List of programs to build
+hostprogs-y := testptp
+
+# Tell kbuild to always build the programs
+always := $(hostprogs-y)
+
+HOSTCFLAGS_testptp.o += -I$(objtree)/usr/include
+HOSTLOADLIBES_testptp := -lrt
diff --git a/tools/testing/selftests/ptp/testptp.c b/tools/testing/selftests/ptp/testptp.c
new file mode 100644
index 0000000..5d2eae1
--- /dev/null
+++ b/tools/testing/selftests/ptp/testptp.c
@@ -0,0 +1,523 @@
+/*
+ * PTP 1588 clock support - User space test program
+ *
+ * Copyright (C) 2010 OMICRON electronics GmbH
+ *
+ *  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.
+ */
+#define _GNU_SOURCE
+#define __SANE_USERSPACE_TYPES__        /* For PPC64, to get LL64 types */
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <math.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/timex.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <linux/ptp_clock.h>
+
+#define DEVICE "/dev/ptp0"
+
+#ifndef ADJ_SETOFFSET
+#define ADJ_SETOFFSET 0x0100
+#endif
+
+#ifndef CLOCK_INVALID
+#define CLOCK_INVALID -1
+#endif
+
+/* clock_adjtime is not available in GLIBC < 2.14 */
+#if !__GLIBC_PREREQ(2, 14)
+#include <sys/syscall.h>
+static int clock_adjtime(clockid_t id, struct timex *tx)
+{
+	return syscall(__NR_clock_adjtime, id, tx);
+}
+#endif
+
+static clockid_t get_clockid(int fd)
+{
+#define CLOCKFD 3
+#define FD_TO_CLOCKID(fd)	((~(clockid_t) (fd) << 3) | CLOCKFD)
+
+	return FD_TO_CLOCKID(fd);
+}
+
+static void handle_alarm(int s)
+{
+	printf("received signal %d\n", s);
+}
+
+static int install_handler(int signum, void (*handler)(int))
+{
+	struct sigaction action;
+	sigset_t mask;
+
+	/* Unblock the signal. */
+	sigemptyset(&mask);
+	sigaddset(&mask, signum);
+	sigprocmask(SIG_UNBLOCK, &mask, NULL);
+
+	/* Install the signal handler. */
+	action.sa_handler = handler;
+	action.sa_flags = 0;
+	sigemptyset(&action.sa_mask);
+	sigaction(signum, &action, NULL);
+
+	return 0;
+}
+
+static long ppb_to_scaled_ppm(int ppb)
+{
+	/*
+	 * The 'freq' field in the 'struct timex' is in parts per
+	 * million, but with a 16 bit binary fractional field.
+	 * Instead of calculating either one of
+	 *
+	 *    scaled_ppm = (ppb / 1000) << 16  [1]
+	 *    scaled_ppm = (ppb << 16) / 1000  [2]
+	 *
+	 * we simply use double precision math, in order to avoid the
+	 * truncation in [1] and the possible overflow in [2].
+	 */
+	return (long) (ppb * 65.536);
+}
+
+static int64_t pctns(struct ptp_clock_time *t)
+{
+	return t->sec * 1000000000LL + t->nsec;
+}
+
+static void usage(char *progname)
+{
+	fprintf(stderr,
+		"usage: %s [options]\n"
+		" -a val     request a one-shot alarm after 'val' seconds\n"
+		" -A val     request a periodic alarm every 'val' seconds\n"
+		" -c         query the ptp clock's capabilities\n"
+		" -d name    device to open\n"
+		" -e val     read 'val' external time stamp events\n"
+		" -f val     adjust the ptp clock frequency by 'val' ppb\n"
+		" -g         get the ptp clock time\n"
+		" -h         prints this message\n"
+		" -i val     index for event/trigger\n"
+		" -k val     measure the time offset between system and phc clock\n"
+		"            for 'val' times (Maximum 25)\n"
+		" -l         list the current pin configuration\n"
+		" -L pin,val configure pin index 'pin' with function 'val'\n"
+		"            the channel index is taken from the '-i' option\n"
+		"            'val' specifies the auxiliary function:\n"
+		"            0 - none\n"
+		"            1 - external time stamp\n"
+		"            2 - periodic output\n"
+		" -p val     enable output with a period of 'val' nanoseconds\n"
+		" -P val     enable or disable (val=1|0) the system clock PPS\n"
+		" -s         set the ptp clock time from the system time\n"
+		" -S         set the system time from the ptp clock time\n"
+		" -t val     shift the ptp clock time by 'val' seconds\n"
+		" -T val     set the ptp clock time to 'val' seconds\n",
+		progname);
+}
+
+int main(int argc, char *argv[])
+{
+	struct ptp_clock_caps caps;
+	struct ptp_extts_event event;
+	struct ptp_extts_request extts_request;
+	struct ptp_perout_request perout_request;
+	struct ptp_pin_desc desc;
+	struct timespec ts;
+	struct timex tx;
+
+	static timer_t timerid;
+	struct itimerspec timeout;
+	struct sigevent sigevent;
+
+	struct ptp_clock_time *pct;
+	struct ptp_sys_offset *sysoff;
+
+
+	char *progname;
+	unsigned int i;
+	int c, cnt, fd;
+
+	char *device = DEVICE;
+	clockid_t clkid;
+	int adjfreq = 0x7fffffff;
+	int adjtime = 0;
+	int capabilities = 0;
+	int extts = 0;
+	int gettime = 0;
+	int index = 0;
+	int list_pins = 0;
+	int oneshot = 0;
+	int pct_offset = 0;
+	int n_samples = 0;
+	int periodic = 0;
+	int perout = -1;
+	int pin_index = -1, pin_func;
+	int pps = -1;
+	int seconds = 0;
+	int settime = 0;
+
+	int64_t t1, t2, tp;
+	int64_t interval, offset;
+
+	progname = strrchr(argv[0], '/');
+	progname = progname ? 1+progname : argv[0];
+	while (EOF != (c = getopt(argc, argv, "a:A:cd:e:f:ghi:k:lL:p:P:sSt:T:v"))) {
+		switch (c) {
+		case 'a':
+			oneshot = atoi(optarg);
+			break;
+		case 'A':
+			periodic = atoi(optarg);
+			break;
+		case 'c':
+			capabilities = 1;
+			break;
+		case 'd':
+			device = optarg;
+			break;
+		case 'e':
+			extts = atoi(optarg);
+			break;
+		case 'f':
+			adjfreq = atoi(optarg);
+			break;
+		case 'g':
+			gettime = 1;
+			break;
+		case 'i':
+			index = atoi(optarg);
+			break;
+		case 'k':
+			pct_offset = 1;
+			n_samples = atoi(optarg);
+			break;
+		case 'l':
+			list_pins = 1;
+			break;
+		case 'L':
+			cnt = sscanf(optarg, "%d,%d", &pin_index, &pin_func);
+			if (cnt != 2) {
+				usage(progname);
+				return -1;
+			}
+			break;
+		case 'p':
+			perout = atoi(optarg);
+			break;
+		case 'P':
+			pps = atoi(optarg);
+			break;
+		case 's':
+			settime = 1;
+			break;
+		case 'S':
+			settime = 2;
+			break;
+		case 't':
+			adjtime = atoi(optarg);
+			break;
+		case 'T':
+			settime = 3;
+			seconds = atoi(optarg);
+			break;
+		case 'h':
+			usage(progname);
+			return 0;
+		case '?':
+		default:
+			usage(progname);
+			return -1;
+		}
+	}
+
+	fd = open(device, O_RDWR);
+	if (fd < 0) {
+		fprintf(stderr, "opening %s: %s\n", device, strerror(errno));
+		return -1;
+	}
+
+	clkid = get_clockid(fd);
+	if (CLOCK_INVALID == clkid) {
+		fprintf(stderr, "failed to read clock id\n");
+		return -1;
+	}
+
+	if (capabilities) {
+		if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {
+			perror("PTP_CLOCK_GETCAPS");
+		} else {
+			printf("capabilities:\n"
+			       "  %d maximum frequency adjustment (ppb)\n"
+			       "  %d programmable alarms\n"
+			       "  %d external time stamp channels\n"
+			       "  %d programmable periodic signals\n"
+			       "  %d pulse per second\n"
+			       "  %d programmable pins\n"
+			       "  %d cross timestamping\n",
+			       caps.max_adj,
+			       caps.n_alarm,
+			       caps.n_ext_ts,
+			       caps.n_per_out,
+			       caps.pps,
+			       caps.n_pins,
+			       caps.cross_timestamping);
+		}
+	}
+
+	if (0x7fffffff != adjfreq) {
+		memset(&tx, 0, sizeof(tx));
+		tx.modes = ADJ_FREQUENCY;
+		tx.freq = ppb_to_scaled_ppm(adjfreq);
+		if (clock_adjtime(clkid, &tx)) {
+			perror("clock_adjtime");
+		} else {
+			puts("frequency adjustment okay");
+		}
+	}
+
+	if (adjtime) {
+		memset(&tx, 0, sizeof(tx));
+		tx.modes = ADJ_SETOFFSET;
+		tx.time.tv_sec = adjtime;
+		tx.time.tv_usec = 0;
+		if (clock_adjtime(clkid, &tx) < 0) {
+			perror("clock_adjtime");
+		} else {
+			puts("time shift okay");
+		}
+	}
+
+	if (gettime) {
+		if (clock_gettime(clkid, &ts)) {
+			perror("clock_gettime");
+		} else {
+			printf("clock time: %ld.%09ld or %s",
+			       ts.tv_sec, ts.tv_nsec, ctime(&ts.tv_sec));
+		}
+	}
+
+	if (settime == 1) {
+		clock_gettime(CLOCK_REALTIME, &ts);
+		if (clock_settime(clkid, &ts)) {
+			perror("clock_settime");
+		} else {
+			puts("set time okay");
+		}
+	}
+
+	if (settime == 2) {
+		clock_gettime(clkid, &ts);
+		if (clock_settime(CLOCK_REALTIME, &ts)) {
+			perror("clock_settime");
+		} else {
+			puts("set time okay");
+		}
+	}
+
+	if (settime == 3) {
+		ts.tv_sec = seconds;
+		ts.tv_nsec = 0;
+		if (clock_settime(clkid, &ts)) {
+			perror("clock_settime");
+		} else {
+			puts("set time okay");
+		}
+	}
+
+	if (extts) {
+		memset(&extts_request, 0, sizeof(extts_request));
+		extts_request.index = index;
+		extts_request.flags = PTP_ENABLE_FEATURE;
+		if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) {
+			perror("PTP_EXTTS_REQUEST");
+			extts = 0;
+		} else {
+			puts("external time stamp request okay");
+		}
+		for (; extts; extts--) {
+			cnt = read(fd, &event, sizeof(event));
+			if (cnt != sizeof(event)) {
+				perror("read");
+				break;
+			}
+			printf("event index %u at %lld.%09u\n", event.index,
+			       event.t.sec, event.t.nsec);
+			fflush(stdout);
+		}
+		/* Disable the feature again. */
+		extts_request.flags = 0;
+		if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) {
+			perror("PTP_EXTTS_REQUEST");
+		}
+	}
+
+	if (list_pins) {
+		int n_pins = 0;
+		if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {
+			perror("PTP_CLOCK_GETCAPS");
+		} else {
+			n_pins = caps.n_pins;
+		}
+		for (i = 0; i < n_pins; i++) {
+			desc.index = i;
+			if (ioctl(fd, PTP_PIN_GETFUNC, &desc)) {
+				perror("PTP_PIN_GETFUNC");
+				break;
+			}
+			printf("name %s index %u func %u chan %u\n",
+			       desc.name, desc.index, desc.func, desc.chan);
+		}
+	}
+
+	if (oneshot) {
+		install_handler(SIGALRM, handle_alarm);
+		/* Create a timer. */
+		sigevent.sigev_notify = SIGEV_SIGNAL;
+		sigevent.sigev_signo = SIGALRM;
+		if (timer_create(clkid, &sigevent, &timerid)) {
+			perror("timer_create");
+			return -1;
+		}
+		/* Start the timer. */
+		memset(&timeout, 0, sizeof(timeout));
+		timeout.it_value.tv_sec = oneshot;
+		if (timer_settime(timerid, 0, &timeout, NULL)) {
+			perror("timer_settime");
+			return -1;
+		}
+		pause();
+		timer_delete(timerid);
+	}
+
+	if (periodic) {
+		install_handler(SIGALRM, handle_alarm);
+		/* Create a timer. */
+		sigevent.sigev_notify = SIGEV_SIGNAL;
+		sigevent.sigev_signo = SIGALRM;
+		if (timer_create(clkid, &sigevent, &timerid)) {
+			perror("timer_create");
+			return -1;
+		}
+		/* Start the timer. */
+		memset(&timeout, 0, sizeof(timeout));
+		timeout.it_interval.tv_sec = periodic;
+		timeout.it_value.tv_sec = periodic;
+		if (timer_settime(timerid, 0, &timeout, NULL)) {
+			perror("timer_settime");
+			return -1;
+		}
+		while (1) {
+			pause();
+		}
+		timer_delete(timerid);
+	}
+
+	if (perout >= 0) {
+		if (clock_gettime(clkid, &ts)) {
+			perror("clock_gettime");
+			return -1;
+		}
+		memset(&perout_request, 0, sizeof(perout_request));
+		perout_request.index = index;
+		perout_request.start.sec = ts.tv_sec + 2;
+		perout_request.start.nsec = 0;
+		perout_request.period.sec = 0;
+		perout_request.period.nsec = perout;
+		if (ioctl(fd, PTP_PEROUT_REQUEST, &perout_request)) {
+			perror("PTP_PEROUT_REQUEST");
+		} else {
+			puts("periodic output request okay");
+		}
+	}
+
+	if (pin_index >= 0) {
+		memset(&desc, 0, sizeof(desc));
+		desc.index = pin_index;
+		desc.func = pin_func;
+		desc.chan = index;
+		if (ioctl(fd, PTP_PIN_SETFUNC, &desc)) {
+			perror("PTP_PIN_SETFUNC");
+		} else {
+			puts("set pin function okay");
+		}
+	}
+
+	if (pps != -1) {
+		int enable = pps ? 1 : 0;
+		if (ioctl(fd, PTP_ENABLE_PPS, enable)) {
+			perror("PTP_ENABLE_PPS");
+		} else {
+			puts("pps for system time request okay");
+		}
+	}
+
+	if (pct_offset) {
+		if (n_samples <= 0 || n_samples > 25) {
+			puts("n_samples should be between 1 and 25");
+			usage(progname);
+			return -1;
+		}
+
+		sysoff = calloc(1, sizeof(*sysoff));
+		if (!sysoff) {
+			perror("calloc");
+			return -1;
+		}
+		sysoff->n_samples = n_samples;
+
+		if (ioctl(fd, PTP_SYS_OFFSET, sysoff))
+			perror("PTP_SYS_OFFSET");
+		else
+			puts("system and phc clock time offset request okay");
+
+		pct = &sysoff->ts[0];
+		for (i = 0; i < sysoff->n_samples; i++) {
+			t1 = pctns(pct+2*i);
+			tp = pctns(pct+2*i+1);
+			t2 = pctns(pct+2*i+2);
+			interval = t2 - t1;
+			offset = (t2 + t1) / 2 - tp;
+
+			printf("system time: %lld.%u\n",
+				(pct+2*i)->sec, (pct+2*i)->nsec);
+			printf("phc    time: %lld.%u\n",
+				(pct+2*i+1)->sec, (pct+2*i+1)->nsec);
+			printf("system time: %lld.%u\n",
+				(pct+2*i+2)->sec, (pct+2*i+2)->nsec);
+			printf("system/phc clock time offset is %" PRId64 " ns\n"
+			       "system     clock time delay  is %" PRId64 " ns\n",
+				offset, interval);
+		}
+
+		free(sysoff);
+	}
+
+	close(fd);
+	return 0;
+}
diff --git a/tools/testing/selftests/ptp/testptp.mk b/tools/testing/selftests/ptp/testptp.mk
new file mode 100644
index 0000000..4ef2d97
--- /dev/null
+++ b/tools/testing/selftests/ptp/testptp.mk
@@ -0,0 +1,33 @@
+# PTP 1588 clock support - User space test program
+#
+# Copyright (C) 2010 OMICRON electronics GmbH
+#
+#  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.
+
+CC        = $(CROSS_COMPILE)gcc
+INC       = -I$(KBUILD_OUTPUT)/usr/include
+CFLAGS    = -Wall $(INC)
+LDLIBS    = -lrt
+PROGS     = testptp
+
+all: $(PROGS)
+
+testptp: testptp.o
+
+clean:
+	rm -f testptp.o
+
+distclean: clean
+	rm -f $(PROGS)
-- 
2.7.4

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