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authorRichard Cochran <richardcochran@gmail.com>2014-03-20 22:21:53 +0100
committerDavid S. Miller <davem@davemloft.net>2014-03-21 14:21:14 -0400
commit888a36871e1924a235ad88198d903382151e4ac5 (patch)
tree1c6807575fc49c8463d53c366bf33c14d77d1ba7 /Documentation/ptp
parent6092315dfdec5185881605d15a0e200d6e90eb66 (diff)
ptp: add the pin GET/SETFUNC ioctls to the testptp program.
This patch adds a option to the test program that lists the programmable pins on a PTP Hardware Clock device, assuming there are any such pins. A second option lets the user reprogram the auxiliary function of a single pin. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/ptp')
-rw-r--r--Documentation/ptp/testptp.c58
1 files changed, 55 insertions, 3 deletions
diff --git a/Documentation/ptp/testptp.c b/Documentation/ptp/testptp.c
index 4aba0436da65..e9eaee622032 100644
--- a/Documentation/ptp/testptp.c
+++ b/Documentation/ptp/testptp.c
@@ -120,6 +120,13 @@ static void usage(char *progname)
" -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"
@@ -134,6 +141,7 @@ int main(int argc, char *argv[])
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;
@@ -156,11 +164,13 @@ int main(int argc, char *argv[])
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 settime = 0;
@@ -169,7 +179,7 @@ int main(int argc, char *argv[])
progname = strrchr(argv[0], '/');
progname = progname ? 1+progname : argv[0];
- while (EOF != (c = getopt(argc, argv, "a:A:cd:e:f:ghi:k:p:P:sSt:v"))) {
+ while (EOF != (c = getopt(argc, argv, "a:A:cd:e:f:ghi:k:lL:p:P:sSt:v"))) {
switch (c) {
case 'a':
oneshot = atoi(optarg);
@@ -199,6 +209,16 @@ int main(int argc, char *argv[])
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;
@@ -245,12 +265,14 @@ int main(int argc, char *argv[])
" %d programmable alarms\n"
" %d external time stamp channels\n"
" %d programmable periodic signals\n"
- " %d pulse per second\n",
+ " %d pulse per second\n"
+ " %d programmable pins\n",
caps.max_adj,
caps.n_alarm,
caps.n_ext_ts,
caps.n_per_out,
- caps.pps);
+ caps.pps,
+ caps.n_pins);
}
}
@@ -331,6 +353,24 @@ int main(int argc, char *argv[])
}
}
+ 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. */
@@ -392,6 +432,18 @@ int main(int argc, char *argv[])
}
}
+ 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)) {

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