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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Subject: [PATCH 6/7] hwclock: Allow to set hwclock from sntp
Date: Mon, 14 Dec 2015 12:43:30 +0100	[thread overview]
Message-ID: <1450093411-13885-6-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1450093411-13885-1-git-send-email-s.hauer@pengutronix.de>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 commands/hwclock.c | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/commands/hwclock.c b/commands/hwclock.c
index 3f89cce..7633132 100644
--- a/commands/hwclock.c
+++ b/commands/hwclock.c
@@ -4,6 +4,7 @@
 #include <linux/err.h>
 #include <linux/ctype.h>
 #include <rtc.h>
+#include <sntp.h>
 #include <linux/rtc.h>
 #include <string.h>
 #include <environment.h>
@@ -92,8 +93,10 @@ static int do_hwclock(int argc, char *argv[])
 	char *env_name = NULL;
 	int opt;
 	int set = 0;
+	int ntp_to_hw = 0;
+	char *ntpserver = NULL;
 
-	while ((opt = getopt(argc, argv, "f:s:e:")) > 0) {
+	while ((opt = getopt(argc, argv, "f:s:e:n:")) > 0) {
 		int ret;
 
 		switch (opt) {
@@ -116,6 +119,10 @@ static int do_hwclock(int argc, char *argv[])
 		case 'e':
 			env_name = optarg;
 			break;
+		case 'n':
+			ntp_to_hw = 1;
+			ntpserver = optarg;
+			break;
 		}
 	}
 
@@ -127,6 +134,23 @@ static int do_hwclock(int argc, char *argv[])
 		return rtc_set_time(r, &stm);
 	}
 
+	if (ntp_to_hw) {
+		s64 now;
+
+		if (!IS_ENABLED(CONFIG_NET_SNTP)) {
+			printf("SNTP support is disabled\n");
+			return 1;
+		}
+
+		now = sntp(ntpserver);
+		if (now < 0)
+			return now;
+
+		rtc_time_to_tm(now, &stm);
+		printf("%s\n", time_str(&stm));
+		return rtc_set_time(r, &stm);
+	}
+
 	rtc_read_time(r, &tm);
 
 	if (env_name) {
@@ -147,6 +171,7 @@ BAREBOX_CMD_HELP_START(hwclock)
 BAREBOX_CMD_HELP_TEXT("Options:")
 BAREBOX_CMD_HELP_OPT ("-f NAME\t\t\t", "RTC device name (default rtc0)")
 BAREBOX_CMD_HELP_OPT ("-e VARNAME\t\t", "store RTC readout into variable VARNAME")
+BAREBOX_CMD_HELP_OPT ("-n NTPSERVER\t", "set RTC from NTP server")
 BAREBOX_CMD_HELP_OPT ("-s ccyymmddHHMM[.SS]\t", "set time")
 BAREBOX_CMD_HELP_END
 
-- 
2.6.2


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  parent reply	other threads:[~2015-12-14 11:43 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-14 11:43 [PATCH 1/7] hwclock command: use format like the Linux tool does Sascha Hauer
2015-12-14 11:43 ` [PATCH 2/7] hwclock command: forward return value of rtc_set_time Sascha Hauer
2015-12-14 11:43 ` [PATCH 3/7] rtc: Check time for validity before passing it to the rtc driver Sascha Hauer
2015-12-14 11:43 ` [PATCH 4/7] rtc: Fill in weekdays before setting time Sascha Hauer
2015-12-14 11:43 ` [PATCH 5/7] net: Add SNTP support Sascha Hauer
2015-12-14 11:43 ` Sascha Hauer [this message]
2015-12-14 11:43 ` [PATCH 7/7] rtc: Add Abracon driver Sascha Hauer
2015-12-14 11:54 ` [PATCH 1/7] hwclock command: use format like the Linux tool does Fabio Estevam
2015-12-14 12:02   ` Sascha Hauer

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