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authorLinus Torvalds <torvalds@linux-foundation.org>2022-06-05 09:12:28 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2022-06-05 09:12:28 -0700
commit2981436374177f78539b026ce5bcbab8c251818e (patch)
treed9d7c4854d4461bec86ca9c0695617a2baeb8e81 /tools
parent71e80720dbf0f08c6979e54f21ddaa5735ce742d (diff)
parent5dad4eccd2b4316a84209603a28d34c6346392bb (diff)
Merge tag 'hte/for-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux
Pull hardware timestamping subsystem from Thierry Reding: "This contains the new HTE (hardware timestamping engine) subsystem that has been in the works for a couple of months now. The infrastructure provided allows for drivers to register as hardware timestamp providers, while consumers will be able to request events that they are interested in (such as GPIOs and IRQs) to be timestamped by the hardware providers. Note that this currently supports only one provider, but there seems to be enough interest in this functionality and we expect to see more drivers added once this is merged" [ Linus Walleij mentions the Intel PMC in the Elkhart and Tiger Lake platforms as another future timestamp provider ] * tag 'hte/for-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: dt-bindings: timestamp: Correct id path dt-bindings: Renamed hte directory to timestamp hte: Uninitialized variable in hte_ts_get() hte: Fix off by one in hte_push_ts_ns() hte: Fix possible use-after-free in tegra_hte_test_remove() hte: Remove unused including <linux/version.h> MAINTAINERS: Add HTE Subsystem hte: Add Tegra HTE test driver tools: gpio: Add new hardware clock type gpiolib: cdev: Add hardware timestamp clock type gpio: tegra186: Add HTE support gpiolib: Add HTE support dt-bindings: Add HTE bindings hte: Add Tegra194 HTE kernel provider drivers: Add hardware timestamp engine (HTE) subsystem Documentation: Add HTE subsystem guide
Diffstat (limited to 'tools')
-rw-r--r--tools/gpio/gpio-event-mon.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/gpio/gpio-event-mon.c b/tools/gpio/gpio-event-mon.c
index a2b233fdb572..6c122952c589 100644
--- a/tools/gpio/gpio-event-mon.c
+++ b/tools/gpio/gpio-event-mon.c
@@ -149,6 +149,7 @@ void print_usage(void)
" -r Listen for rising edges\n"
" -f Listen for falling edges\n"
" -w Report the wall-clock time for events\n"
+ " -t Report the hardware timestamp for events\n"
" -b <n> Debounce the line with period n microseconds\n"
" [-c <n>] Do <n> loops (optional, infinite loop if not stated)\n"
" -? This helptext\n"
@@ -174,7 +175,7 @@ int main(int argc, char **argv)
memset(&config, 0, sizeof(config));
config.flags = GPIO_V2_LINE_FLAG_INPUT;
- while ((c = getopt(argc, argv, "c:n:o:b:dsrfw?")) != -1) {
+ while ((c = getopt(argc, argv, "c:n:o:b:dsrfwt?")) != -1) {
switch (c) {
case 'c':
loops = strtoul(optarg, NULL, 10);
@@ -208,6 +209,9 @@ int main(int argc, char **argv)
case 'w':
config.flags |= GPIO_V2_LINE_FLAG_EVENT_CLOCK_REALTIME;
break;
+ case 't':
+ config.flags |= GPIO_V2_LINE_FLAG_EVENT_CLOCK_HTE;
+ break;
case '?':
print_usage();
return -1;