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From bb88a9c0ffa5b6006d689635028177be4ce83104 Mon Sep 17 00:00:00 2001
From: Jason Kridner <jkridner@beagleboard.org>
Date: Thu, 20 May 2010 06:14:01 -0500
Subject: [PATCH 42/50] BeagleBoard: Added LED driver
Added LED driver using status_led. USR0 is set to monitor the boot
status. USR1 is set to be the green LED.
(cherry picked from commit 048b526fd7cc0c642f27c674b3e235321c880b66)
(cherry picked from commit 21c574d9e20f86ab757f5efdd9146e6607f2faba)
Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
---
board/ti/beagle/Makefile | 4 ++-
board/ti/beagle/beagle.c | 8 ++++
board/ti/beagle/led.c | 91 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 102 insertions(+), 1 deletions(-)
create mode 100644 board/ti/beagle/led.c
diff --git a/board/ti/beagle/Makefile b/board/ti/beagle/Makefile
index f797112..4cc675c 100644
--- a/board/ti/beagle/Makefile
+++ b/board/ti/beagle/Makefile
@@ -25,8 +25,10 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
-COBJS := beagle.o
+COBJS-y := $(BOARD).o
+COBJS-$(CONFIG_STATUS_LED) += led.o
+COBJS := $(sort $(COBJS-y))
SRCS := $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS))
diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c
index cdba3dd..a6a4961 100644
--- a/board/ti/beagle/beagle.c
+++ b/board/ti/beagle/beagle.c
@@ -30,6 +30,9 @@
* MA 02111-1307 USA
*/
#include <common.h>
+#ifdef CONFIG_STATUS_LED
+#include <status_led.h>
+#endif
#include <twl4030.h>
#include <asm/io.h>
#include <asm/arch/mux.h>
@@ -83,6 +86,10 @@ int board_init(void)
/* boot param addr */
gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
+#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
+ status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
+#endif
+
return 0;
}
@@ -282,3 +289,4 @@ void set_muxconf_regs(void)
{
MUX_BEAGLE();
}
+
diff --git a/board/ti/beagle/led.c b/board/ti/beagle/led.c
new file mode 100644
index 0000000..df26552
--- /dev/null
+++ b/board/ti/beagle/led.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2010 Texas Instruments, Inc.
+ * Jason Kridner <jkridner@beagleboard.org>
+ *
+ * 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
+ */
+#include <common.h>
+#include <status_led.h>
+#include <asm/arch/cpu.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/gpio.h>
+
+static unsigned int saved_state[2] = {STATUS_LED_OFF, STATUS_LED_OFF};
+
+/* GPIO pins for the LEDs */
+#define BEAGLE_LED_USR0 149
+#define BEAGLE_LED_USR1 150
+
+#ifdef STATUS_LED_GREEN
+void green_LED_off (void)
+{
+ __led_set (STATUS_LED_GREEN, 0);
+}
+
+void green_LED_on (void)
+{
+ __led_set (STATUS_LED_GREEN, 1);
+}
+#endif
+
+void __led_init (led_id_t mask, int state)
+{
+ __led_set (mask, state);
+}
+
+void __led_toggle (led_id_t mask)
+{
+#ifdef STATUS_LED_BIT
+ if (STATUS_LED_BIT & mask) {
+ if (STATUS_LED_ON == saved_state[0])
+ __led_set(STATUS_LED_BIT, 0);
+ else
+ __led_set(STATUS_LED_BIT, 1);
+ }
+#endif
+#ifdef STATUS_LED_BIT1
+ if (STATUS_LED_BIT1 & mask) {
+ if (STATUS_LED_ON == saved_state[1])
+ __led_set(STATUS_LED_BIT1, 0);
+ else
+ __led_set(STATUS_LED_BIT1, 1);
+ }
+#endif
+}
+
+void __led_set (led_id_t mask, int state)
+{
+#ifdef STATUS_LED_BIT
+ if (STATUS_LED_BIT & mask) {
+ if (!omap_request_gpio(BEAGLE_LED_USR0)) {
+ omap_set_gpio_direction(BEAGLE_LED_USR0, 0);
+ omap_set_gpio_dataout(BEAGLE_LED_USR0, state);
+ }
+ saved_state[0] = state;
+ }
+#endif
+#ifdef STATUS_LED_BIT1
+ if (STATUS_LED_BIT1 & mask) {
+ if (!omap_request_gpio(BEAGLE_LED_USR1)) {
+ omap_set_gpio_direction(BEAGLE_LED_USR1, 0);
+ omap_set_gpio_dataout(BEAGLE_LED_USR1, state);
+ }
+ saved_state[1] = state;
+ }
+#endif
+}
+
--
1.6.6.1
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