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, 194 insertions, 0 deletions

diff --git a/kernel/drivers/staging/vt6656/wcmd.c b/kernel/drivers/staging/vt6656/wcmd.c
new file mode 100644
index 000000000..3cbf4791b
--- /dev/null
+++ b/kernel/drivers/staging/vt6656/wcmd.c
@@ -0,0 +1,194 @@
+/*
+ * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
+ * All rights reserved.
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * File: wcmd.c
+ *
+ * Purpose: Handles the management command interface functions
+ *
+ * Author: Lyndon Chen
+ *
+ * Date: May 8, 2003
+ *
+ * Functions:
+ *	vnt_cmd_complete - Command Complete function
+ *	vnt_schedule_command - Push Command and wait Command Scheduler to do
+ *	vnt_cmd_timer_wait- Call back timer
+ *
+ * Revision History:
+ *
+ */
+
+#include "device.h"
+#include "mac.h"
+#include "wcmd.h"
+#include "power.h"
+#include "usbpipe.h"
+#include "rxtx.h"
+#include "rf.h"
+
+static void vnt_cmd_timer_wait(struct vnt_private *priv, unsigned long msecs)
+{
+	schedule_delayed_work(&priv->run_command_work, msecs_to_jiffies(msecs));
+}
+
+static int vnt_cmd_complete(struct vnt_private *priv)
+{
+
+	priv->command_state = WLAN_CMD_IDLE;
+	if (priv->free_cmd_queue == CMD_Q_SIZE) {
+		/* Command Queue Empty */
+		priv->cmd_running = false;
+		return true;
+	}
+
+	priv->command = priv->cmd_queue[priv->cmd_dequeue_idx];
+
+	ADD_ONE_WITH_WRAP_AROUND(priv->cmd_dequeue_idx, CMD_Q_SIZE);
+	priv->free_cmd_queue++;
+	priv->cmd_running = true;
+
+	switch (priv->command) {
+	case WLAN_CMD_INIT_MAC80211:
+		priv->command_state = WLAN_CMD_INIT_MAC80211_START;
+		break;
+
+	case WLAN_CMD_TBTT_WAKEUP:
+		priv->command_state = WLAN_CMD_TBTT_WAKEUP_START;
+		break;
+
+	case WLAN_CMD_BECON_SEND:
+		priv->command_state = WLAN_CMD_BECON_SEND_START;
+		break;
+
+	case WLAN_CMD_SETPOWER:
+		priv->command_state = WLAN_CMD_SETPOWER_START;
+		break;
+
+	case WLAN_CMD_CHANGE_ANTENNA:
+		priv->command_state = WLAN_CMD_CHANGE_ANTENNA_START;
+		break;
+
+	default:
+		break;
+	}
+
+	vnt_cmd_timer_wait(priv, 0);
+
+	return true;
+}
+
+void vnt_run_command(struct work_struct *work)
+{
+	struct vnt_private *priv =
+		container_of(work, struct vnt_private, run_command_work.work);
+
+	if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags))
+		return;
+
+	if (priv->cmd_running != true)
+		return;
+
+	switch (priv->command_state) {
+	case WLAN_CMD_INIT_MAC80211_START:
+		if (priv->mac_hw)
+			break;
+
+		dev_info(&priv->usb->dev, "Starting mac80211\n");
+
+		if (vnt_init(priv)) {
+			/* If fail all ends TODO retry */
+			dev_err(&priv->usb->dev, "failed to start\n");
+			ieee80211_free_hw(priv->hw);
+			return;
+		}
+
+		break;
+
+	case WLAN_CMD_TBTT_WAKEUP_START:
+		vnt_next_tbtt_wakeup(priv);
+		break;
+
+	case WLAN_CMD_BECON_SEND_START:
+		if (!priv->vif)
+			break;
+
+		vnt_beacon_make(priv, priv->vif);
+
+		vnt_mac_reg_bits_on(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
+
+		break;
+
+	case WLAN_CMD_SETPOWER_START:
+
+		vnt_rf_setpower(priv, priv->current_rate,
+				priv->hw->conf.chandef.chan->hw_value);
+
+		break;
+
+	case WLAN_CMD_CHANGE_ANTENNA_START:
+		dev_dbg(&priv->usb->dev, "Change from Antenna%d to",
+							priv->rx_antenna_sel);
+
+		if (priv->rx_antenna_sel == 0) {
+			priv->rx_antenna_sel = 1;
+			if (priv->tx_rx_ant_inv == true)
+				vnt_set_antenna_mode(priv, ANT_RXA);
+			else
+				vnt_set_antenna_mode(priv, ANT_RXB);
+		} else {
+			priv->rx_antenna_sel = 0;
+			if (priv->tx_rx_ant_inv == true)
+				vnt_set_antenna_mode(priv, ANT_RXB);
+			else
+				vnt_set_antenna_mode(priv, ANT_RXA);
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	vnt_cmd_complete(priv);
+}
+
+int vnt_schedule_command(struct vnt_private *priv, enum vnt_cmd command)
+{
+
+	if (priv->free_cmd_queue == 0)
+		return false;
+
+	priv->cmd_queue[priv->cmd_enqueue_idx] = command;
+
+	ADD_ONE_WITH_WRAP_AROUND(priv->cmd_enqueue_idx, CMD_Q_SIZE);
+	priv->free_cmd_queue--;
+
+	if (priv->cmd_running == false)
+		vnt_cmd_complete(priv);
+
+	return true;
+
+}
+
+void vnt_reset_command_timer(struct vnt_private *priv)
+{
+	priv->free_cmd_queue = CMD_Q_SIZE;
+	priv->cmd_dequeue_idx = 0;
+	priv->cmd_enqueue_idx = 0;
+	priv->command_state = WLAN_CMD_IDLE;
+	priv->cmd_running = false;
+}