linux-kernel - [RFC v3 10/12] tools: gpio: Add new hardware clock type

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Message-ID: <20211123193039.25154-11-dipenp@nvidia.com>
Date:   Tue, 23 Nov 2021 11:30:37 -0800
From:   Dipen Patel <dipenp@...dia.com>
To:     <thierry.reding@...il.com>, <jonathanh@...dia.com>,
        <linux-kernel@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <linux-gpio@...r.kernel.org>, <linus.walleij@...aro.org>,
        <bgolaszewski@...libre.com>, <warthog618@...il.com>,
        <devicetree@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        <robh+dt@...nel.org>
CC:     Dipen Patel <dipenp@...dia.com>
Subject: [RFC v3 10/12] tools: gpio: Add new hardware clock type

gpiolib-cdev is extended to support hardware clock type, this
patch reflects that fact.

Signed-off-by: Dipen Patel <dipenp@...dia.com>
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
---
 tools/gpio/gpio-event-mon.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/gpio/gpio-event-mon.c b/tools/gpio/gpio-event-mon.c
index a2b233fdb572..bed52333698d 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_HARDWARE;
+			break;
 		case '?':
 			print_usage();
 			return -1;
-- 
2.17.1