[U-Boot] [PATCH 1/1] ARM: Add command to control coloured led from the console

[Ulf Samuelsson]

This patch allows any board implementing the coloured LED API
to control the LEDs from the console.

led [green | yellow | red | all ]  [ on | off ]

or

led [ 1 | 2 | 3 | all ]  [ on | off ]


Adds configuration item CONFIG_CMD_LED enabling the command.

The coloured led API is available as part of the status_led API.
Not every board with the coloured LED support implements the 
status led, so the coloured LED API is separated out
from include/status_led. h to "include/coloured_led.h".

-------------------------------------------------------------------------------
Patch [1/1]	Updates to include/asm-arm/arch.at91rm9200


[1/5] AFFECTS
	common/cmd_led.c
	common/Makefile
	include/coloured_led.h
	include/status_led.h




Signed-off-by: Ulf Samuelsson <ulf.samuelsson at atmel.com>
---
diff -urN u-boot-2009.01-0rig//common/cmd_led.c
u-boot-2009.01/common/cmd_led.c
--- u-boot-2009.01-0rig//common/cmd_led.c	1970-01-01 01:00:00.000000000
+0100
+++ u-boot-2009.01/common/cmd_led.c	2009-01-03 23:39:57.000000000 +0100
@@ -0,0 +1,84 @@
+/*
+ * (C) Copyright 2008
+ * Ulf Samuelsson <ulf.samuelsson at atmel.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * This file provides a shell like 'test' function to return
+ * true/false from an integer or string compare of two memory
+ * locations or a location and a scalar/literal.
+ * A few parts were lifted from bash 'test' command
+ */
+
+#include <common.h>
+#include <config.h>
+#include <command.h>
+#include <coloured_led.h>
+
+int do_led ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[] )
+{
+	int	led;
+	/* Validate arguments */
+	if ((argc != 3)){
+		printf("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+	if (strcmp(argv[1], "1") == 0) {
+		led = (1 << 0);
+	} else if (strcmp(argv[1], "2") == 0) {
+		led = (1 << 1);
+	} else if (strcmp(argv[1], "3") == 0) {
+		led = (1 << 2);
+	} else if (strcmp(argv[1], "green") == 0) {
+		led = (1 << 0);
+	} else if (strcmp(argv[1], "yellow") == 0) {
+		led = (1 << 1);
+	} else if (strcmp(argv[1], "red") == 0) {
+		led = (1 << 2);
+	} else if (strcmp(argv[1], "all") == 0) {
+		led = 7;
+	} else {
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	if (strcmp(argv[2], "off") == 0) {
+		if(led & 1) green_LED_off();
+		if(led & 2) yellow_LED_off();
+		if(led & 4) red_LED_off();		
+	} else if (strcmp(argv[2], "on") == 0) {
+		if(led & 1) green_LED_on();
+		if(led & 2) yellow_LED_on();
+		if(led & 4) red_LED_on();		
+	} else {
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	led, 3, 1, do_led,
+	"led\t- [1|2|3|green|yellow|red|all] [on|off]\n",
+	"led [1|2|3|green|yellow|red|all] [on|off] sets /clears led 1,2,3\n"
+);
+
diff -urN u-boot-2009.01-0rig//common/Makefile
u-boot-2009.01/common/Makefile
--- u-boot-2009.01-0rig//common/Makefile	2009-01-02 21:18:24.000000000
+0100
+++ u-boot-2009.01/common/Makefile	2009-01-03 23:41:53.000000000 +0100
@@ -99,6 +99,7 @@
 COBJS-$(CONFIG_CMD_IRQ) += cmd_irq.o
 COBJS-$(CONFIG_CMD_ITEST) += cmd_itest.o
 COBJS-$(CONFIG_CMD_JFFS2) += cmd_jffs2.o
+COBJS-$(CONFIG_CMD_LED) += cmd_led.o
 COBJS-$(CONFIG_CMD_LICENSE) += cmd_license.o
 COBJS-y += cmd_load.o
 COBJS-$(CONFIG_LOGBUFFER) += cmd_log.o
diff -urN u-boot-2009.01-0rig//include/coloured_led.h
u-boot-2009.01/include/coloured_led.h
--- u-boot-2009.01-0rig//include/coloured_led.h	1970-01-01
01:00:00.000000000 +0100
+++ u-boot-2009.01/include/coloured_led.h	2009-01-03 23:39:19.000000000
+0100
@@ -0,0 +1,62 @@
+/*
+ * (C) Copyright 2008
+ * Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+ * 
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * The purpose of this code is to signal the operational status of a
+ * target which usually boots over the network; while running in
+ * PCBoot, a status LED is blinking. As soon as a valid BOOTP reply
+ * message has been received, the LED is turned off. The Linux
+ * kernel, once it is running, will start blinking the LED again,
+ * with another frequency.
+ */
+
+#ifndef _COLOURED_LED_H_
+#define	_COLOURED_LED_H_
+
+#ifdef CONFIG_COLOURED_LED
+
+/*
+ * Coloured LEDs API
+ */
+#ifndef	__ASSEMBLY__
+extern void	coloured_LED_init (void);
+extern void	red_LED_on(void);
+extern void	red_LED_off(void);
+extern void	green_LED_on(void);
+extern void	green_LED_off(void);
+extern void	yellow_LED_on(void);
+extern void	yellow_LED_off(void);
+#else
+	.extern LED_init
+	.extern red_LED_on
+	.extern red_LED_off
+	.extern yellow_LED_on
+	.extern yellow_LED_off
+	.extern green_LED_on
+	.extern green_LED_off
+#endif
+
+#endif	/* CONFIG_COLOURED_LED	*/
+
+#endif	/* _STATUS_COLOURED_H_	*/
+
diff -urN u-boot-2009.01-0rig//include/status_led.h
u-boot-2009.01/include/status_led.h
--- u-boot-2009.01-0rig//include/status_led.h	2008-12-16
23:48:27.000000000 +0100
+++ u-boot-2009.01/include/status_led.h	2009-01-03 23:44:40.000000000
+0100
@@ -383,27 +383,6 @@
 # include <asm/status_led.h>
 #endif
 
-/*
- * Coloured LEDs API
- */
-#ifndef	__ASSEMBLY__
-extern void	coloured_LED_init (void);
-extern void	red_LED_on(void);
-extern void	red_LED_off(void);
-extern void	green_LED_on(void);
-extern void	green_LED_off(void);
-extern void	yellow_LED_on(void);
-extern void	yellow_LED_off(void);
-#else
-	.extern LED_init
-	.extern red_LED_on
-	.extern red_LED_off
-	.extern yellow_LED_on
-	.extern yellow_LED_off
-	.extern green_LED_on
-	.extern green_LED_off
-#endif
-
 #endif	/* CONFIG_STATUS_LED	*/
 
 #endif	/* _STATUS_LED_H_	*/

Best Regards
Ulf Samuelsson