Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 64 insertions, 0 deletions

diff --git a/kernel/drivers/leds/leds-rb532.c b/kernel/drivers/leds/leds-rb532.c
new file mode 100644
index 000000000..fcd1215b6
--- /dev/null
+++ b/kernel/drivers/leds/leds-rb532.c
@@ -0,0 +1,64 @@
+/*
+ * LEDs driver for the "User LED" on Routerboard532
+ *
+ * Copyright (C) 2009 Phil Sutter <n0-1@freewrt.org>
+ *
+ * Based on leds-cobalt-qube.c by Florian Fainelly and
+ * rb-diag.c (my own standalone driver for both LED and
+ * button of Routerboard532).
+ */
+
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-rc32434/gpio.h>
+#include <asm/mach-rc32434/rb.h>
+
+static void rb532_led_set(struct led_classdev *cdev,
+			  enum led_brightness brightness)
+{
+	if (brightness)
+		set_latch_u5(LO_ULED, 0);
+
+	else
+		set_latch_u5(0, LO_ULED);
+}
+
+static enum led_brightness rb532_led_get(struct led_classdev *cdev)
+{
+	return (get_latch_u5() & LO_ULED) ? LED_FULL : LED_OFF;
+}
+
+static struct led_classdev rb532_uled = {
+	.name = "uled",
+	.brightness_set = rb532_led_set,
+	.brightness_get = rb532_led_get,
+	.default_trigger = "nand-disk",
+};
+
+static int rb532_led_probe(struct platform_device *pdev)
+{
+	return led_classdev_register(&pdev->dev, &rb532_uled);
+}
+
+static int rb532_led_remove(struct platform_device *pdev)
+{
+	led_classdev_unregister(&rb532_uled);
+	return 0;
+}
+
+static struct platform_driver rb532_led_driver = {
+	.probe = rb532_led_probe,
+	.remove = rb532_led_remove,
+	.driver = {
+		.name = "rb532-led",
+	},
+};
+
+module_platform_driver(rb532_led_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("User LED support for Routerboard532");
+MODULE_AUTHOR("Phil Sutter <n0-1@freewrt.org>");
+MODULE_ALIAS("platform:rb532-led");