[U-Boot] [PATCH] nios2: add gpio based status led driver

Thomas Chou
2010-03-27T04:54:14Z

This patch adds a gpio based status led driver. The led mask
is used to specify the gpio pin.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
---
board/altera/common/gpioled.c | 30 ++++++++++++++++++++++++++++++
1 files changed, 30 insertions(+), 0 deletions(-)
create mode 100644 board/altera/common/gpioled.c

diff --git a/board/altera/common/gpioled.c b/board/altera/common/gpioled.c
new file mode 100644
index 0000000..9a51fae
--- /dev/null
+++ b/board/altera/common/gpioled.c
@@ -0,0 +1,30 @@
+/*
+ * Status LED driver based on gpio
+ *
+ * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
+ *
+ * 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.
+ */
+
+#include <common.h>
+#include <status_led.h>
+#include <asm/gpio.h>
+
+/* assume led is active low */
+
+void __led_init(led_id_t mask, int state)
+{
+ gpio_direction_output(mask, (state == STATUS_LED_ON) ? 0 : 1);
+}
+
+void __led_set(led_id_t mask, int state)
+{
+ gpio_set_value(mask, (state == STATUS_LED_ON) ? 0 : 1);
+}
+
+void __led_toggle(led_id_t mask)
+{
+ gpio_set_value(mask, !gpio_get_value (mask));
+}
--
1.6.6.1