commands: add msleep command

Add a command to sleep for n milliseconds.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands/Kconfig

@@ -25,6 +25,10 @@ config CMD_SLEEP
 	tristate
 	prompt "sleep"
 
+config CMD_MSLEEP
+	tristate
+	prompt "msleep"
+
 config CMD_SAVEENV
 	tristate
 	select ENV_HANDLING

commands/Makefile

@@ -10,6 +10,7 @@ obj-$(CONFIG_CMD_MTEST)		+= memtest.o
 obj-$(CONFIG_CMD_EDIT)		+= edit.o
 obj-$(CONFIG_CMD_EXEC)		+= exec.o
 obj-$(CONFIG_CMD_SLEEP)		+= sleep.o
+obj-$(CONFIG_CMD_MSLEEP)	+= msleep.o
 obj-$(CONFIG_CMD_RESET)		+= reset.o
 obj-$(CONFIG_CMD_GO)		+= go.o
 obj-$(CONFIG_NET)		+= net.o

commands/msleep.c

@@ -0,0 +1,40 @@
+/*
+ * msleep.c - delay execution for n milliseconds
+ *
+ * Copyright (c) 2012 Steffen Trumtrar <s.trumtrar@pengutronix.de>, Pengutronix
+ *
+ * derived from commands/sleep.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <common.h>
+#include <command.h>
+#include <clock.h>
+
+static int do_msleep(int argc, char *argv[])
+{
+	ulong delay;
+
+	if (argc != 2)
+		return COMMAND_ERROR_USAGE;
+
+	delay = simple_strtoul(argv[1], NULL, 10);
+
+	mdelay(delay);
+
+	return 0;
+}
+
+BAREBOX_CMD_START(msleep)
+	.cmd		= do_msleep,
+	.usage		= "delay execution for n milliseconds",
+BAREBOX_CMD_END