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@@ -0,0 +1,115 @@
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+/*
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+ * LED support code, ripped out of arch/arm/kernel/time.c
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+ *
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+ * Copyright (C) 1994-2001 Russell King
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+ */
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+#include <linux/module.h>
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+#include <linux/init.h>
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+#include <linux/sysdev.h>
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+
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+#include <asm/leds.h>
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+
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+static void dummy_leds_event(led_event_t evt)
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+{
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+}
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+
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+void (*leds_event)(led_event_t) = dummy_leds_event;
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+
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+struct leds_evt_name {
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+ const char name[8];
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+ int on;
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+ int off;
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+};
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+
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+static const struct leds_evt_name evt_names[] = {
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+ { "amber", led_amber_on, led_amber_off },
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+ { "blue", led_blue_on, led_blue_off },
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+ { "green", led_green_on, led_green_off },
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+ { "red", led_red_on, led_red_off },
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+};
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+
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+static ssize_t leds_store(struct sys_device *dev,
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+ struct sysdev_attribute *attr,
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+ const char *buf, size_t size)
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+{
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+ int ret = -EINVAL, len = strcspn(buf, " ");
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+
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+ if (len > 0 && buf[len] == '\0')
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+ len--;
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+
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+ if (strncmp(buf, "claim", len) == 0) {
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+ leds_event(led_claim);
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+ ret = size;
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+ } else if (strncmp(buf, "release", len) == 0) {
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+ leds_event(led_release);
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+ ret = size;
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+ } else {
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+ int i;
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+
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+ for (i = 0; i < ARRAY_SIZE(evt_names); i++) {
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+ if (strlen(evt_names[i].name) != len ||
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+ strncmp(buf, evt_names[i].name, len) != 0)
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+ continue;
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+ if (strncmp(buf+len, " on", 3) == 0) {
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+ leds_event(evt_names[i].on);
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+ ret = size;
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+ } else if (strncmp(buf+len, " off", 4) == 0) {
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+ leds_event(evt_names[i].off);
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+ ret = size;
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+ }
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+ break;
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+ }
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+ }
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+ return ret;
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+}
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+
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+static SYSDEV_ATTR(event, 0200, NULL, leds_store);
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+
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+static int leds_suspend(struct sys_device *dev, pm_message_t state)
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+{
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+ leds_event(led_stop);
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+ return 0;
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+}
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+
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+static int leds_resume(struct sys_device *dev)
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+{
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+ leds_event(led_start);
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+ return 0;
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+}
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+
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+static int leds_shutdown(struct sys_device *dev)
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+{
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+ leds_event(led_halted);
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+ return 0;
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+}
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+
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+static struct sysdev_class leds_sysclass = {
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+ .name = "leds",
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+ .shutdown = leds_shutdown,
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+ .suspend = leds_suspend,
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+ .resume = leds_resume,
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+};
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+
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+static struct sys_device leds_device = {
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+ .id = 0,
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+ .cls = &leds_sysclass,
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+};
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+
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+static int __init leds_init(void)
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+{
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+ int ret;
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+ ret = sysdev_class_register(&leds_sysclass);
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+ if (ret == 0)
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+ ret = sysdev_register(&leds_device);
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+ if (ret == 0)
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+ ret = sysdev_create_file(&leds_device, &attr_event);
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+ return ret;
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+}
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+
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+device_initcall(leds_init);
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+
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+EXPORT_SYMBOL(leds_event);
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