ptp: Extend the test program to check the external time stamp flags.

Because each driver and hardware has different capabilities, the test
cannot provide a simple pass/fail result, but it can at least show what
combinations of flags are supported.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/tools/testing/selftests/ptp/testptp.c b/tools/testing/selftests/ptp/testptp.c
index bd4a724..c0dd102 100644 (file)
--- a/tools/testing/selftests/ptp/testptp.c
+++ b/tools/testing/selftests/ptp/testptp.c
@@ -44,6 +44,46 @@ static int clock_adjtime(clockid_t id, struct timex *tx)
 }
 #endif
 
+static void show_flag_test(int rq_index, unsigned int flags, int err)
+{
+       printf("PTP_EXTTS_REQUEST%c flags 0x%08x : (%d) %s\n",
+              rq_index ? '1' + rq_index : ' ',
+              flags, err, strerror(errno));
+       /* sigh, uClibc ... */
+       errno = 0;
+}
+
+static void do_flag_test(int fd, unsigned int index)
+{
+       struct ptp_extts_request extts_request;
+       unsigned long request[2] = {
+               PTP_EXTTS_REQUEST,
+               PTP_EXTTS_REQUEST2,
+       };
+       unsigned int enable_flags[5] = {
+               PTP_ENABLE_FEATURE,
+               PTP_ENABLE_FEATURE | PTP_RISING_EDGE,
+               PTP_ENABLE_FEATURE | PTP_FALLING_EDGE,
+               PTP_ENABLE_FEATURE | PTP_RISING_EDGE | PTP_FALLING_EDGE,
+               PTP_ENABLE_FEATURE | (PTP_EXTTS_VALID_FLAGS + 1),
+       };
+       int err, i, j;
+
+       memset(&extts_request, 0, sizeof(extts_request));
+       extts_request.index = index;
+
+       for (i = 0; i < 2; i++) {
+               for (j = 0; j < 5; j++) {
+                       extts_request.flags = enable_flags[j];
+                       err = ioctl(fd, request[i], &extts_request);
+                       show_flag_test(i, extts_request.flags, err);
+
+                       extts_request.flags = 0;
+                       err = ioctl(fd, request[i], &extts_request);
+               }
+       }
+}
+
 static clockid_t get_clockid(int fd)
 {
 #define CLOCKFD 3
@@ -96,7 +136,8 @@ static void usage(char *progname)
                " -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",
+               " -T val     set the ptp clock time to 'val' seconds\n"
+               " -z         test combinations of rising/falling external time stamp flags\n",
                progname);
 }
 
@@ -122,6 +163,7 @@ int main(int argc, char *argv[])
        int adjtime = 0;
        int capabilities = 0;
        int extts = 0;
+       int flagtest = 0;
        int gettime = 0;
        int index = 0;
        int list_pins = 0;
@@ -138,7 +180,7 @@ int main(int argc, char *argv[])
 
        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"))) {
+       while (EOF != (c = getopt(argc, argv, "cd:e:f:ghi:k:lL:p:P:sSt:T:z"))) {
                switch (c) {
                case 'c':
                        capabilities = 1;
@@ -191,6 +233,9 @@ int main(int argc, char *argv[])
                        settime = 3;
                        seconds = atoi(optarg);
                        break;
+               case 'z':
+                       flagtest = 1;
+                       break;
                case 'h':
                        usage(progname);
                        return 0;
@@ -322,6 +367,10 @@ int main(int argc, char *argv[])
                }
        }
 
+       if (flagtest) {
+               do_flag_test(fd, index);
+       }
+
        if (list_pins) {
                int n_pins = 0;
                if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {