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, 74 insertions, 0 deletions

diff --git a/kernel/arch/sh/boards/mach-highlander/irq-r7780mp.c b/kernel/arch/sh/boards/mach-highlander/irq-r7780mp.c
new file mode 100644
index 000000000..9893fd3a1
--- /dev/null
+++ b/kernel/arch/sh/boards/mach-highlander/irq-r7780mp.c
@@ -0,0 +1,74 @@
+/*
+ * Renesas Solutions Highlander R7780MP Support.
+ *
+ * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
+ * Copyright (C) 2006  Paul Mundt
+ * Copyright (C) 2007  Magnus Damm
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <mach/highlander.h>
+
+enum {
+	UNUSED = 0,
+
+	/* board specific interrupt sources */
+	CF,		/* Compact Flash */
+	TP,		/* Touch panel */
+	SCIF1,		/* FPGA SCIF1 */
+	SCIF0,		/* FPGA SCIF0 */
+	SMBUS,		/* SMBUS */
+	RTC,		/* RTC Alarm */
+	AX88796,	/* Ethernet controller */
+	PSW,		/* Push Switch */
+
+	/* external bus connector */
+	EXT1, EXT2, EXT4, EXT5, EXT6,
+};
+
+static struct intc_vect vectors[] __initdata = {
+	INTC_IRQ(CF, IRQ_CF),
+	INTC_IRQ(TP, IRQ_TP),
+	INTC_IRQ(SCIF1, IRQ_SCIF1),
+	INTC_IRQ(SCIF0, IRQ_SCIF0),
+	INTC_IRQ(SMBUS, IRQ_SMBUS),
+	INTC_IRQ(RTC, IRQ_RTC),
+	INTC_IRQ(AX88796, IRQ_AX88796),
+	INTC_IRQ(PSW, IRQ_PSW),
+
+	INTC_IRQ(EXT1, IRQ_EXT1), INTC_IRQ(EXT2, IRQ_EXT2),
+	INTC_IRQ(EXT4, IRQ_EXT4), INTC_IRQ(EXT5, IRQ_EXT5),
+	INTC_IRQ(EXT6, IRQ_EXT6),
+};
+
+static struct intc_mask_reg mask_registers[] __initdata = {
+	{ 0xa4000000, 0, 16, /* IRLMSK */
+	  { SCIF0, SCIF1, RTC, 0, CF, 0, TP, SMBUS,
+	    0, EXT6, EXT5, EXT4, EXT2, EXT1, PSW, AX88796 } },
+};
+
+static unsigned char irl2irq[HL_NR_IRL] __initdata = {
+	0, IRQ_CF, IRQ_TP, IRQ_SCIF1,
+	IRQ_SCIF0, IRQ_SMBUS, IRQ_RTC, IRQ_EXT6,
+	IRQ_EXT5, IRQ_EXT4, IRQ_EXT2, IRQ_EXT1,
+	0, IRQ_AX88796, IRQ_PSW,
+};
+
+static DECLARE_INTC_DESC(intc_desc, "r7780mp", vectors,
+			 NULL, mask_registers, NULL, NULL);
+
+unsigned char * __init highlander_plat_irq_setup(void)
+{
+	if ((__raw_readw(0xa4000700) & 0xf000) == 0x2000) {
+		printk(KERN_INFO "Using r7780mp interrupt controller.\n");
+		register_intc_controller(&intc_desc);
+		return irl2irq;
+	}
+
+	return NULL;
+}