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, 98 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-imx/ehci-imx35.c b/kernel/arch/arm/mach-imx/ehci-imx35.c
new file mode 100644
index 000000000..f424a5437
--- /dev/null
+++ b/kernel/arch/arm/mach-imx/ehci-imx35.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
+ * Copyright (C) 2010 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/platform_data/usb-ehci-mxc.h>
+
+#include "ehci.h"
+#include "hardware.h"
+
+#define USBCTRL_OTGBASE_OFFSET	0x600
+
+#define MX35_OTG_SIC_SHIFT	29
+#define MX35_OTG_SIC_MASK	(0x3 << MX35_OTG_SIC_SHIFT)
+#define MX35_OTG_PM_BIT		(1 << 24)
+#define MX35_OTG_PP_BIT		(1 << 11)
+#define MX35_OTG_OCPOL_BIT	(1 << 3)
+
+#define MX35_H1_SIC_SHIFT	21
+#define MX35_H1_SIC_MASK	(0x3 << MX35_H1_SIC_SHIFT)
+#define MX35_H1_PP_BIT		(1 << 18)
+#define MX35_H1_PM_BIT		(1 << 16)
+#define MX35_H1_IPPUE_UP_BIT	(1 << 7)
+#define MX35_H1_IPPUE_DOWN_BIT	(1 << 6)
+#define MX35_H1_TLL_BIT		(1 << 5)
+#define MX35_H1_USBTE_BIT	(1 << 4)
+#define MX35_H1_OCPOL_BIT	(1 << 2)
+
+int mx35_initialize_usb_hw(int port, unsigned int flags)
+{
+	unsigned int v;
+
+	v = readl(MX35_IO_ADDRESS(MX35_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
+
+	switch (port) {
+	case 0:	/* OTG port */
+		v &= ~(MX35_OTG_SIC_MASK | MX35_OTG_PM_BIT | MX35_OTG_PP_BIT |
+			MX35_OTG_OCPOL_BIT);
+		v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX35_OTG_SIC_SHIFT;
+
+		if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+			v |= MX35_OTG_PM_BIT;
+
+		if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
+			v |= MX35_OTG_PP_BIT;
+
+		if (!(flags & MXC_EHCI_OC_PIN_ACTIVE_LOW))
+			v |= MX35_OTG_OCPOL_BIT;
+
+		break;
+	case 1: /* H1 port */
+		v &= ~(MX35_H1_SIC_MASK | MX35_H1_PM_BIT | MX35_H1_PP_BIT |
+			MX35_H1_OCPOL_BIT | MX35_H1_TLL_BIT | MX35_H1_USBTE_BIT |
+			MX35_H1_IPPUE_DOWN_BIT | MX35_H1_IPPUE_UP_BIT);
+		v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX35_H1_SIC_SHIFT;
+
+		if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+			v |= MX35_H1_PM_BIT;
+
+		if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
+			v |= MX35_H1_PP_BIT;
+
+		if (!(flags & MXC_EHCI_OC_PIN_ACTIVE_LOW))
+			v |= MX35_H1_OCPOL_BIT;
+
+		if (!(flags & MXC_EHCI_TTL_ENABLED))
+			v |= MX35_H1_TLL_BIT;
+
+		if (flags & MXC_EHCI_INTERNAL_PHY)
+			v |= MX35_H1_USBTE_BIT;
+
+		if (flags & MXC_EHCI_IPPUE_DOWN)
+			v |= MX35_H1_IPPUE_DOWN_BIT;
+
+		if (flags & MXC_EHCI_IPPUE_UP)
+			v |= MX35_H1_IPPUE_UP_BIT;
+
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	writel(v, MX35_IO_ADDRESS(MX35_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
+
+	return 0;
+}