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, 124 insertions, 0 deletions

diff --git a/kernel/drivers/media/pci/mantis/mantis_ioc.c b/kernel/drivers/media/pci/mantis/mantis_ioc.c
new file mode 100644
index 000000000..24fcdc63d
--- /dev/null
+++ b/kernel/drivers/media/pci/mantis/mantis_ioc.c
@@ -0,0 +1,124 @@
+/*
+	Mantis PCI bridge driver
+
+	Copyright (C) Manu Abraham (abraham.manu@gmail.com)
+
+	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.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to the Free Software
+	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <linux/kernel.h>
+#include <linux/i2c.h>
+
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <asm/io.h>
+
+#include "dmxdev.h"
+#include "dvbdev.h"
+#include "dvb_demux.h"
+#include "dvb_frontend.h"
+#include "dvb_net.h"
+
+#include "mantis_common.h"
+#include "mantis_reg.h"
+#include "mantis_ioc.h"
+
+static int read_eeprom_bytes(struct mantis_pci *mantis, u8 reg, u8 *data, u8 length)
+{
+	struct i2c_adapter *adapter = &mantis->adapter;
+	int err;
+	u8 buf = reg;
+
+	struct i2c_msg msg[] = {
+		{ .addr = 0x50, .flags = 0, .buf = &buf, .len = 1 },
+		{ .addr = 0x50, .flags = I2C_M_RD, .buf = data, .len = length },
+	};
+
+	err = i2c_transfer(adapter, msg, 2);
+	if (err < 0) {
+		dprintk(MANTIS_ERROR, 1, "ERROR: i2c read: < err=%i d0=0x%02x d1=0x%02x >",
+			err, data[0], data[1]);
+
+		return err;
+	}
+
+	return 0;
+}
+int mantis_get_mac(struct mantis_pci *mantis)
+{
+	int err;
+	u8 mac_addr[6] = {0};
+
+	err = read_eeprom_bytes(mantis, 0x08, mac_addr, 6);
+	if (err < 0) {
+		dprintk(MANTIS_ERROR, 1, "ERROR: Mantis EEPROM read error <%d>", err);
+
+		return err;
+	}
+
+	dprintk(MANTIS_ERROR, 0, "    MAC Address=[%pM]\n", mac_addr);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(mantis_get_mac);
+
+/* Turn the given bit on or off. */
+void mantis_gpio_set_bits(struct mantis_pci *mantis, u32 bitpos, u8 value)
+{
+	u32 cur;
+
+	dprintk(MANTIS_DEBUG, 1, "Set Bit <%d> to <%d>", bitpos, value);
+	cur = mmread(MANTIS_GPIF_ADDR);
+	if (value)
+		mantis->gpio_status = cur | (1 << bitpos);
+	else
+		mantis->gpio_status = cur & (~(1 << bitpos));
+
+	dprintk(MANTIS_DEBUG, 1, "GPIO Value <%02x>", mantis->gpio_status);
+	mmwrite(mantis->gpio_status, MANTIS_GPIF_ADDR);
+	mmwrite(0x00, MANTIS_GPIF_DOUT);
+}
+EXPORT_SYMBOL_GPL(mantis_gpio_set_bits);
+
+int mantis_stream_control(struct mantis_pci *mantis, enum mantis_stream_control stream_ctl)
+{
+	u32 reg;
+
+	reg = mmread(MANTIS_CONTROL);
+	switch (stream_ctl) {
+	case STREAM_TO_HIF:
+		dprintk(MANTIS_DEBUG, 1, "Set stream to HIF");
+		reg &= 0xff - MANTIS_BYPASS;
+		mmwrite(reg, MANTIS_CONTROL);
+		reg |= MANTIS_BYPASS;
+		mmwrite(reg, MANTIS_CONTROL);
+		break;
+
+	case STREAM_TO_CAM:
+		dprintk(MANTIS_DEBUG, 1, "Set stream to CAM");
+		reg |= MANTIS_BYPASS;
+		mmwrite(reg, MANTIS_CONTROL);
+		reg &= 0xff - MANTIS_BYPASS;
+		mmwrite(reg, MANTIS_CONTROL);
+		break;
+	default:
+		dprintk(MANTIS_ERROR, 1, "Unknown MODE <%02x>", stream_ctl);
+		return -1;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(mantis_stream_control);