zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/arch/arm/kernel/leds.c b/ap/os/linux/linux-3.4.x/arch/arm/kernel/leds.c
new file mode 100644
index 0000000..2050399
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/arch/arm/kernel/leds.c
@@ -0,0 +1,145 @@
+/*
+ * LED support code, ripped out of arch/arm/kernel/time.c
+ *
+ * Copyright (C) 1994-2001 Russell King
+ *
+ * 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/export.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/notifier.h>
+#include <linux/cpu.h>
+#include <linux/syscore_ops.h>
+#include <linux/string.h>
+
+#include <asm/leds.h>
+
+static void dummy_leds_event(led_event_t evt)
+{
+}
+
+void (*leds_event)(led_event_t) = dummy_leds_event;
+
+struct leds_evt_name {
+ const char name[8];
+ int on;
+ int off;
+};
+
+static const struct leds_evt_name evt_names[] = {
+ { "amber", led_amber_on, led_amber_off },
+ { "blue", led_blue_on, led_blue_off },
+ { "green", led_green_on, led_green_off },
+ { "red", led_red_on, led_red_off },
+};
+
+static ssize_t leds_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ int ret = -EINVAL, len = strcspn(buf, " ");
+
+ if (len > 0 && buf[len] == '\0')
+ len--;
+
+ if (strncmp(buf, "claim", len) == 0) {
+ leds_event(led_claim);
+ ret = size;
+ } else if (strncmp(buf, "release", len) == 0) {
+ leds_event(led_release);
+ ret = size;
+ } else {
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(evt_names); i++) {
+ if (strlen(evt_names[i].name) != len ||
+ strncmp(buf, evt_names[i].name, len) != 0)
+ continue;
+ if (strncmp(buf+len, " on", 3) == 0) {
+ leds_event(evt_names[i].on);
+ ret = size;
+ } else if (strncmp(buf+len, " off", 4) == 0) {
+ leds_event(evt_names[i].off);
+ ret = size;
+ }
+ break;
+ }
+ }
+ return ret;
+}
+
+static DEVICE_ATTR(event, 0200, NULL, leds_store);
+
+static struct bus_type leds_subsys = {
+ .name = "leds",
+ .dev_name = "leds",
+};
+
+static struct device leds_device = {
+ .id = 0,
+ .bus = &leds_subsys,
+};
+
+static int leds_suspend(void)
+{
+ leds_event(led_stop);
+ return 0;
+}
+
+static void leds_resume(void)
+{
+ leds_event(led_start);
+}
+
+static void leds_shutdown(void)
+{
+ leds_event(led_halted);
+}
+
+static struct syscore_ops leds_syscore_ops = {
+ .shutdown = leds_shutdown,
+ .suspend = leds_suspend,
+ .resume = leds_resume,
+};
+
+static int leds_idle_notifier(struct notifier_block *nb, unsigned long val,
+ void *data)
+{
+ switch (val) {
+ case IDLE_START:
+ leds_event(led_idle_start);
+ break;
+ case IDLE_END:
+ leds_event(led_idle_end);
+ break;
+ }
+
+ return 0;
+}
+
+static struct notifier_block leds_idle_nb = {
+ .notifier_call = leds_idle_notifier,
+};
+
+static int __init leds_init(void)
+{
+ int ret;
+ ret = subsys_system_register(&leds_subsys, NULL);
+ if (ret == 0)
+ ret = device_register(&leds_device);
+ if (ret == 0)
+ ret = device_create_file(&leds_device, &dev_attr_event);
+ if (ret == 0) {
+ register_syscore_ops(&leds_syscore_ops);
+ idle_notifier_register(&leds_idle_nb);
+ }
+
+ return ret;
+}
+
+device_initcall(leds_init);
+
+EXPORT_SYMBOL(leds_event);