1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/leds/trigger/ledtrig-input.c b/drivers/leds/trigger/ledtrig-input.c
new file mode 100644
index 000000000000..8a974a355656
--- /dev/null
+++ b/drivers/leds/trigger/ledtrig-input.c
@@ -0,0 +1,55 @@
+/*
+ * Set LED GPIO to Input "Trigger"
+ *
+ * Copyright 2015 Phil Elwell <[email protected]>
+ *
+ * Based on Nick Forbes's ledtrig-default-on.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.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/leds.h>
+#include <linux/gpio.h>
+#include "../leds.h"
+
+static int input_trig_activate(struct led_classdev *led_cdev)
+{
+	led_cdev->flags |= SET_GPIO_INPUT;
+	led_set_brightness(led_cdev, 0);
+	return 0;
+}
+
+static void input_trig_deactivate(struct led_classdev *led_cdev)
+{
+	led_cdev->flags |= SET_GPIO_OUTPUT;
+	led_set_brightness(led_cdev, 0);
+}
+
+static struct led_trigger input_led_trigger = {
+	.name     = "input",
+	.activate = input_trig_activate,
+	.deactivate = input_trig_deactivate,
+};
+
+static int __init input_trig_init(void)
+{
+	return led_trigger_register(&input_led_trigger);
+}
+
+static void __exit input_trig_exit(void)
+{
+	led_trigger_unregister(&input_led_trigger);
+}
+
+module_init(input_trig_init);
+module_exit(input_trig_exit);
+
+MODULE_AUTHOR("Phil Elwell <[email protected]>");
+MODULE_DESCRIPTION("Set LED GPIO to Input \"trigger\"");
+MODULE_LICENSE("GPL");