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, 69 insertions, 0 deletions

diff --git a/kernel/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c b/kernel/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c
new file mode 100644
index 000000000..cca028d63
--- /dev/null
+++ b/kernel/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c
@@ -0,0 +1,69 @@
+/*
+ * Amlogic Meson DWMAC glue layer
+ *
+ * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/device.h>
+#include <linux/ethtool.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/platform_device.h>
+#include <linux/stmmac.h>
+
+#include "stmmac_platform.h"
+
+#define ETHMAC_SPEED_100	BIT(1)
+
+struct meson_dwmac {
+	struct device	*dev;
+	void __iomem	*reg;
+};
+
+static void meson6_dwmac_fix_mac_speed(void *priv, unsigned int speed)
+{
+	struct meson_dwmac *dwmac = priv;
+	unsigned int val;
+
+	val = readl(dwmac->reg);
+
+	switch (speed) {
+	case SPEED_10:
+		val &= ~ETHMAC_SPEED_100;
+		break;
+	case SPEED_100:
+		val |= ETHMAC_SPEED_100;
+		break;
+	}
+
+	writel(val, dwmac->reg);
+}
+
+static void *meson6_dwmac_setup(struct platform_device *pdev)
+{
+	struct meson_dwmac *dwmac;
+	struct resource *res;
+
+	dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
+	if (!dwmac)
+		return ERR_PTR(-ENOMEM);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	dwmac->reg = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(dwmac->reg))
+		return ERR_CAST(dwmac->reg);
+
+	return dwmac;
+}
+
+const struct stmmac_of_data meson6_dwmac_data = {
+	.setup		= meson6_dwmac_setup,
+	.fix_mac_speed	= meson6_dwmac_fix_mac_speed,
+};