[mirror_ubuntu-jammy-kernel.git] / tools / testing / selftests / ptp / testptp.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * PTP 1588 clock support - User space test program
 *
 * Copyright (C) 2010 OMICRON electronics GmbH
 */
#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
	return (((unsigned int) ~fd) << 3) | CLOCKFD;
}

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"
		" -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;
	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 pct_offset = 0;
	int n_samples = 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, "cd:e:f:ghi:k:lL:p:P:sSt:T:v"))) {
		switch (c) {
		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 (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;
}
Commit	Line	Data
74ba9207	1	// SPDX-License-Identifier: GPL-2.0-or-later
d94ba80e RC	2	/*
	3	* PTP 1588 clock support - User space test program
	4	*
	5	* Copyright (C) 2010 OMICRON electronics GmbH
d94ba80e	6	*/
42e1358e	7	#define _GNU_SOURCE
9ae6d493	8	#define __SANE_USERSPACE_TYPES__ /* For PPC64, to get LL64 types */
d94ba80e RC	9	#include <errno.h>
d94ba80e RC	10	#include <fcntl.h>
4ec54f95	11	#include <inttypes.h>
d94ba80e RC	12	#include <math.h>
	13	#include <signal.h>
	14	#include <stdio.h>
	15	#include <stdlib.h>
	16	#include <string.h>
	17	#include <sys/ioctl.h>
	18	#include <sys/mman.h>
	19	#include <sys/stat.h>
	20	#include <sys/time.h>
	21	#include <sys/timex.h>
	22	#include <sys/types.h>
	23	#include <time.h>
	24	#include <unistd.h>
	25
	26	#include <linux/ptp_clock.h>
	27
	28	#define DEVICE "/dev/ptp0"
	29
	30	#ifndef ADJ_SETOFFSET
	31	#define ADJ_SETOFFSET 0x0100
	32	#endif
	33
	34	#ifndef CLOCK_INVALID
	35	#define CLOCK_INVALID -1
	36	#endif
	37
42e1358e CR	38	/* clock_adjtime is not available in GLIBC < 2.14 */
42e1358e CR	39	#if !__GLIBC_PREREQ(2, 14)
d94ba80e RC	40	#include <sys/syscall.h>
	41	static int clock_adjtime(clockid_t id, struct timex *tx)
	42	{
	43	return syscall(__NR_clock_adjtime, id, tx);
	44	}
42e1358e	45	#endif
d94ba80e RC	46
	47	static clockid_t get_clockid(int fd)
	48	{
	49	#define CLOCKFD 3
29f1b2b0	50	return (((unsigned int) ~fd) << 3) \| CLOCKFD;
d94ba80e RC	51	}
d94ba80e RC	52
d94ba80e RC	53	static long ppb_to_scaled_ppm(int ppb)
	54	{
	55	/*
	56	* The 'freq' field in the 'struct timex' is in parts per
	57	* million, but with a 16 bit binary fractional field.
	58	* Instead of calculating either one of
	59	*
	60	* scaled_ppm = (ppb / 1000) << 16 [1]
	61	* scaled_ppm = (ppb << 16) / 1000 [2]
	62	*
	63	* we simply use double precision math, in order to avoid the
	64	* truncation in [1] and the possible overflow in [2].
	65	*/
	66	return (long) (ppb * 65.536);
	67	}
	68
568ebc59 DZ	69	static int64_t pctns(struct ptp_clock_time *t)
	70	{
	71	return t->sec * 1000000000LL + t->nsec;
	72	}
	73
d94ba80e RC	74	static void usage(char *progname)
	75	{
	76	fprintf(stderr,
	77	"usage: %s [options]\n"
d94ba80e RC	78	" -c query the ptp clock's capabilities\n"
	79	" -d name device to open\n"
	80	" -e val read 'val' external time stamp events\n"
	81	" -f val adjust the ptp clock frequency by 'val' ppb\n"
	82	" -g get the ptp clock time\n"
	83	" -h prints this message\n"
61950e82	84	" -i val index for event/trigger\n"
568ebc59 DZ	85	" -k val measure the time offset between system and phc clock\n"
568ebc59 DZ	86	" for 'val' times (Maximum 25)\n"
888a3687 RC	87	" -l list the current pin configuration\n"
	88	" -L pin,val configure pin index 'pin' with function 'val'\n"
	89	" the channel index is taken from the '-i' option\n"
	90	" 'val' specifies the auxiliary function:\n"
	91	" 0 - none\n"
	92	" 1 - external time stamp\n"
	93	" 2 - periodic output\n"
d94ba80e RC	94	" -p val enable output with a period of 'val' nanoseconds\n"
	95	" -P val enable or disable (val=1\|0) the system clock PPS\n"
	96	" -s set the ptp clock time from the system time\n"
	97	" -S set the system time from the ptp clock time\n"
271c83de MR	98	" -t val shift the ptp clock time by 'val' seconds\n"
271c83de MR	99	" -T val set the ptp clock time to 'val' seconds\n",
d94ba80e RC	100	progname);
	101	}
	102
	103	int main(int argc, char *argv[])
	104	{
	105	struct ptp_clock_caps caps;
	106	struct ptp_extts_event event;
	107	struct ptp_extts_request extts_request;
	108	struct ptp_perout_request perout_request;
888a3687	109	struct ptp_pin_desc desc;
d94ba80e RC	110	struct timespec ts;
d94ba80e RC	111	struct timex tx;
568ebc59 DZ	112	struct ptp_clock_time *pct;
	113	struct ptp_sys_offset *sysoff;
	114
d94ba80e	115	char *progname;
f0cd147e MK	116	unsigned int i;
f0cd147e MK	117	int c, cnt, fd;
d94ba80e RC	118
	119	char *device = DEVICE;
	120	clockid_t clkid;
	121	int adjfreq = 0x7fffffff;
	122	int adjtime = 0;
	123	int capabilities = 0;
	124	int extts = 0;
	125	int gettime = 0;
61950e82	126	int index = 0;
888a3687	127	int list_pins = 0;
568ebc59 DZ	128	int pct_offset = 0;
568ebc59 DZ	129	int n_samples = 0;
d94ba80e	130	int perout = -1;
888a3687	131	int pin_index = -1, pin_func;
d94ba80e	132	int pps = -1;
271c83de	133	int seconds = 0;
d94ba80e RC	134	int settime = 0;
d94ba80e RC	135
568ebc59 DZ	136	int64_t t1, t2, tp;
	137	int64_t interval, offset;
	138
d94ba80e RC	139	progname = strrchr(argv[0], '/');
d94ba80e RC	140	progname = progname ? 1+progname : argv[0];
e3d8e588	141	while (EOF != (c = getopt(argc, argv, "cd:e:f:ghi:k:lL:p:P:sSt:T:v"))) {
d94ba80e	142	switch (c) {
d94ba80e RC	143	case 'c':
	144	capabilities = 1;
	145	break;
	146	case 'd':
	147	device = optarg;
	148	break;
	149	case 'e':
	150	extts = atoi(optarg);
	151	break;
	152	case 'f':
	153	adjfreq = atoi(optarg);
	154	break;
	155	case 'g':
	156	gettime = 1;
	157	break;
61950e82 SS	158	case 'i':
	159	index = atoi(optarg);
	160	break;
568ebc59 DZ	161	case 'k':
	162	pct_offset = 1;
	163	n_samples = atoi(optarg);
	164	break;
888a3687 RC	165	case 'l':
	166	list_pins = 1;
	167	break;
	168	case 'L':
	169	cnt = sscanf(optarg, "%d,%d", &pin_index, &pin_func);
	170	if (cnt != 2) {
	171	usage(progname);
	172	return -1;
	173	}
	174	break;
d94ba80e RC	175	case 'p':
	176	perout = atoi(optarg);
	177	break;
	178	case 'P':
	179	pps = atoi(optarg);
	180	break;
	181	case 's':
	182	settime = 1;
	183	break;
	184	case 'S':
	185	settime = 2;
	186	break;
	187	case 't':
	188	adjtime = atoi(optarg);
	189	break;
271c83de MR	190	case 'T':
	191	settime = 3;
	192	seconds = atoi(optarg);
	193	break;
d94ba80e RC	194	case 'h':
	195	usage(progname);
	196	return 0;
	197	case '?':
	198	default:
	199	usage(progname);
	200	return -1;
	201	}
	202	}
	203
	204	fd = open(device, O_RDWR);
	205	if (fd < 0) {
	206	fprintf(stderr, "opening %s: %s\n", device, strerror(errno));
	207	return -1;
	208	}
	209
	210	clkid = get_clockid(fd);
	211	if (CLOCK_INVALID == clkid) {
	212	fprintf(stderr, "failed to read clock id\n");
	213	return -1;
	214	}
	215
	216	if (capabilities) {
	217	if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {
	218	perror("PTP_CLOCK_GETCAPS");
	219	} else {
	220	printf("capabilities:\n"
	221	" %d maximum frequency adjustment (ppb)\n"
	222	" %d programmable alarms\n"
	223	" %d external time stamp channels\n"
	224	" %d programmable periodic signals\n"
888a3687	225	" %d pulse per second\n"
719f1aa4 CH	226	" %d programmable pins\n"
719f1aa4 CH	227	" %d cross timestamping\n",
d94ba80e RC	228	caps.max_adj,
	229	caps.n_alarm,
	230	caps.n_ext_ts,
	231	caps.n_per_out,
888a3687	232	caps.pps,
719f1aa4 CH	233	caps.n_pins,
719f1aa4 CH	234	caps.cross_timestamping);
d94ba80e RC	235	}
	236	}
	237
	238	if (0x7fffffff != adjfreq) {
	239	memset(&tx, 0, sizeof(tx));
	240	tx.modes = ADJ_FREQUENCY;
	241	tx.freq = ppb_to_scaled_ppm(adjfreq);
	242	if (clock_adjtime(clkid, &tx)) {
	243	perror("clock_adjtime");
	244	} else {
	245	puts("frequency adjustment okay");
	246	}
	247	}
	248
	249	if (adjtime) {
	250	memset(&tx, 0, sizeof(tx));
	251	tx.modes = ADJ_SETOFFSET;
	252	tx.time.tv_sec = adjtime;
	253	tx.time.tv_usec = 0;
	254	if (clock_adjtime(clkid, &tx) < 0) {
	255	perror("clock_adjtime");
	256	} else {
	257	puts("time shift okay");
	258	}
	259	}
	260
	261	if (gettime) {
	262	if (clock_gettime(clkid, &ts)) {
	263	perror("clock_gettime");
	264	} else {
	265	printf("clock time: %ld.%09ld or %s",
	266	ts.tv_sec, ts.tv_nsec, ctime(&ts.tv_sec));
	267	}
	268	}
	269
	270	if (settime == 1) {
	271	clock_gettime(CLOCK_REALTIME, &ts);
	272	if (clock_settime(clkid, &ts)) {
	273	perror("clock_settime");
	274	} else {
	275	puts("set time okay");
	276	}
	277	}
	278
	279	if (settime == 2) {
	280	clock_gettime(clkid, &ts);
	281	if (clock_settime(CLOCK_REALTIME, &ts)) {
	282	perror("clock_settime");
	283	} else {
	284	puts("set time okay");
	285	}
	286	}
	287
271c83de MR	288	if (settime == 3) {
	289	ts.tv_sec = seconds;
	290	ts.tv_nsec = 0;
	291	if (clock_settime(clkid, &ts)) {
	292	perror("clock_settime");
	293	} else {
	294	puts("set time okay");
	295	}
	296	}
	297
d94ba80e RC	298	if (extts) {
d94ba80e RC	299	memset(&extts_request, 0, sizeof(extts_request));
61950e82	300	extts_request.index = index;
d94ba80e RC	301	extts_request.flags = PTP_ENABLE_FEATURE;
	302	if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) {
	303	perror("PTP_EXTTS_REQUEST");
	304	extts = 0;
	305	} else {
	306	puts("external time stamp request okay");
	307	}
	308	for (; extts; extts--) {
	309	cnt = read(fd, &event, sizeof(event));
	310	if (cnt != sizeof(event)) {
	311	perror("read");
	312	break;
	313	}
	314	printf("event index %u at %lld.%09u\n", event.index,
	315	event.t.sec, event.t.nsec);
	316	fflush(stdout);
	317	}
	318	/* Disable the feature again. */
	319	extts_request.flags = 0;
	320	if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) {
	321	perror("PTP_EXTTS_REQUEST");
	322	}
	323	}
	324
888a3687 RC	325	if (list_pins) {
	326	int n_pins = 0;
	327	if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {
	328	perror("PTP_CLOCK_GETCAPS");
	329	} else {
	330	n_pins = caps.n_pins;
	331	}
	332	for (i = 0; i < n_pins; i++) {
	333	desc.index = i;
	334	if (ioctl(fd, PTP_PIN_GETFUNC, &desc)) {
	335	perror("PTP_PIN_GETFUNC");
	336	break;
	337	}
	338	printf("name %s index %u func %u chan %u\n",
	339	desc.name, desc.index, desc.func, desc.chan);
	340	}
	341	}
	342
d94ba80e RC	343	if (perout >= 0) {
	344	if (clock_gettime(clkid, &ts)) {
	345	perror("clock_gettime");
	346	return -1;
	347	}
	348	memset(&perout_request, 0, sizeof(perout_request));
61950e82	349	perout_request.index = index;
d94ba80e RC	350	perout_request.start.sec = ts.tv_sec + 2;
	351	perout_request.start.nsec = 0;
	352	perout_request.period.sec = 0;
	353	perout_request.period.nsec = perout;
	354	if (ioctl(fd, PTP_PEROUT_REQUEST, &perout_request)) {
	355	perror("PTP_PEROUT_REQUEST");
	356	} else {
	357	puts("periodic output request okay");
	358	}
	359	}
	360
888a3687 RC	361	if (pin_index >= 0) {
	362	memset(&desc, 0, sizeof(desc));
	363	desc.index = pin_index;
	364	desc.func = pin_func;
	365	desc.chan = index;
	366	if (ioctl(fd, PTP_PIN_SETFUNC, &desc)) {
	367	perror("PTP_PIN_SETFUNC");
	368	} else {
	369	puts("set pin function okay");
	370	}
	371	}
	372
d94ba80e RC	373	if (pps != -1) {
	374	int enable = pps ? 1 : 0;
	375	if (ioctl(fd, PTP_ENABLE_PPS, enable)) {
	376	perror("PTP_ENABLE_PPS");
	377	} else {
	378	puts("pps for system time request okay");
	379	}
	380	}
	381
568ebc59 DZ	382	if (pct_offset) {
	383	if (n_samples <= 0 \|\| n_samples > 25) {
	384	puts("n_samples should be between 1 and 25");
	385	usage(progname);
	386	return -1;
	387	}
	388
	389	sysoff = calloc(1, sizeof(*sysoff));
	390	if (!sysoff) {
	391	perror("calloc");
	392	return -1;
	393	}
	394	sysoff->n_samples = n_samples;
	395
	396	if (ioctl(fd, PTP_SYS_OFFSET, sysoff))
	397	perror("PTP_SYS_OFFSET");
	398	else
	399	puts("system and phc clock time offset request okay");
	400
	401	pct = &sysoff->ts[0];
	402	for (i = 0; i < sysoff->n_samples; i++) {
	403	t1 = pctns(pct+2*i);
	404	tp = pctns(pct+2*i+1);
	405	t2 = pctns(pct+2*i+2);
	406	interval = t2 - t1;
	407	offset = (t2 + t1) / 2 - tp;
	408
6ab0e475	409	printf("system time: %lld.%u\n",
568ebc59	410	(pct+2i)->sec, (pct+2i)->nsec);
6ab0e475	411	printf("phc time: %lld.%u\n",
568ebc59	412	(pct+2i+1)->sec, (pct+2i+1)->nsec);
6ab0e475	413	printf("system time: %lld.%u\n",
568ebc59	414	(pct+2i+2)->sec, (pct+2i+2)->nsec);
4ec54f95 CR	415	printf("system/phc clock time offset is %" PRId64 " ns\n"
4ec54f95 CR	416	"system clock time delay is %" PRId64 " ns\n",
568ebc59 DZ	417	offset, interval);
	418	}
	419
	420	free(sysoff);
	421	}
	422
d94ba80e RC	423	close(fd);
	424	return 0;
	425	}