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, 96 insertions, 0 deletions

diff --git a/kernel/drivers/leds/leds-net48xx.c b/kernel/drivers/leds/leds-net48xx.c
new file mode 100644
index 000000000..ec3a2e8ad
--- /dev/null
+++ b/kernel/drivers/leds/leds-net48xx.c
@@ -0,0 +1,96 @@
+/*
+ * LEDs driver for Soekris net48xx
+ *
+ * Copyright (C) 2006 Chris Boot <bootc@bootc.net>
+ *
+ * Based on leds-ams-delta.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/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/nsc_gpio.h>
+#include <linux/scx200_gpio.h>
+#include <linux/module.h>
+
+#define DRVNAME "net48xx-led"
+#define NET48XX_ERROR_LED_GPIO	20
+
+static struct platform_device *pdev;
+
+static void net48xx_error_led_set(struct led_classdev *led_cdev,
+		enum led_brightness value)
+{
+	scx200_gpio_ops.gpio_set(NET48XX_ERROR_LED_GPIO, value ? 1 : 0);
+}
+
+static struct led_classdev net48xx_error_led = {
+	.name		= "net48xx::error",
+	.brightness_set	= net48xx_error_led_set,
+	.flags		= LED_CORE_SUSPENDRESUME,
+};
+
+static int net48xx_led_probe(struct platform_device *pdev)
+{
+	return led_classdev_register(&pdev->dev, &net48xx_error_led);
+}
+
+static int net48xx_led_remove(struct platform_device *pdev)
+{
+	led_classdev_unregister(&net48xx_error_led);
+	return 0;
+}
+
+static struct platform_driver net48xx_led_driver = {
+	.probe		= net48xx_led_probe,
+	.remove		= net48xx_led_remove,
+	.driver		= {
+		.name		= DRVNAME,
+	},
+};
+
+static int __init net48xx_led_init(void)
+{
+	int ret;
+
+	/* small hack, but scx200_gpio doesn't set .dev if the probe fails */
+	if (!scx200_gpio_ops.dev) {
+		ret = -ENODEV;
+		goto out;
+	}
+
+	ret = platform_driver_register(&net48xx_led_driver);
+	if (ret < 0)
+		goto out;
+
+	pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0);
+	if (IS_ERR(pdev)) {
+		ret = PTR_ERR(pdev);
+		platform_driver_unregister(&net48xx_led_driver);
+		goto out;
+	}
+
+out:
+	return ret;
+}
+
+static void __exit net48xx_led_exit(void)
+{
+	platform_device_unregister(pdev);
+	platform_driver_unregister(&net48xx_led_driver);
+}
+
+module_init(net48xx_led_init);
+module_exit(net48xx_led_exit);
+
+MODULE_AUTHOR("Chris Boot <bootc@bootc.net>");
+MODULE_DESCRIPTION("Soekris net48xx LED driver");
+MODULE_LICENSE("GPL");
+