[PATCH] commands: wd: add new -x option to inhibit all watchdogs

[Ahmad Fatoum]

When booting after nv.autoboot=abort, barebox will drop to shell and
try to inhibit all watchdogs: If they can be disabled, they will be and
otherwise if autopoll support is compiled in, they will be periodically
fed. This is useful for development. For this to work though, barebox
needs an environment. Make watchdog_inhibit_all more accessible by
making it directly invocable with wd -x.

Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
Cc: Michael Olbrich <mol at pengutronix.de>
Cc: Yann Sionneau <ysionneau at kalray.eu>
Cc: Jules Maselbas <jmaselbas at kalray.eu>
---
 commands/wd.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/commands/wd.c b/commands/wd.c
index c186244b2b3a..11f888133aac 100644
--- a/commands/wd.c
+++ b/commands/wd.c
@@ -18,11 +18,13 @@ static int do_wd(int argc, char *argv[])
 	int opt;
 	int rc;
 
-	while ((opt = getopt(argc, argv, "d:")) > 0) {
+	while ((opt = getopt(argc, argv, "d:x")) > 0) {
 		switch (opt) {
 		case 'd':
 			wd = watchdog_get_by_name(optarg);
 			break;
+		case 'x':
+			return watchdog_inhibit_all();
 		default:
 			return COMMAND_ERROR_USAGE;
 		}
@@ -66,12 +68,13 @@ BAREBOX_CMD_HELP_TEXT("When TIME is 0, the watchdog gets disabled,")
 BAREBOX_CMD_HELP_TEXT("Without a parameter the watchdog will be re-triggered.")
 BAREBOX_CMD_HELP_TEXT("Options:")
 BAREBOX_CMD_HELP_OPT("-d DEVICE\t", "watchdog name (default is highest priority watchdog)")
+BAREBOX_CMD_HELP_OPT("-x\t", "inhibit all watchdogs (i.e. disable or autopoll if possible)")
 BAREBOX_CMD_HELP_END
 
 BAREBOX_CMD_START(wd)
 	.cmd = do_wd,
 	BAREBOX_CMD_DESC("enable/disable/trigger the watchdog")
-	BAREBOX_CMD_OPTS("[-d DEVICE] [TIME]")
+	BAREBOX_CMD_OPTS("[-d DEVICE] [-x] [TIME]")
 	BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP)
 	BAREBOX_CMD_HELP(cmd_wd_help)
 	BAREBOX_CMD_COMPLETE(device_complete)
-- 
2.30.2