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, 122 insertions, 0 deletions

diff --git a/kernel/arch/mips/ath79/mach-pb44.c b/kernel/arch/mips/ath79/mach-pb44.c
new file mode 100644
index 000000000..67b980d94
--- /dev/null
+++ b/kernel/arch/mips/ath79/mach-pb44.c
@@ -0,0 +1,122 @@
+/*
+ *  Atheros PB44 reference board support
+ *
+ *  Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
+ *
+ *  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.
+ */
+
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/i2c-gpio.h>
+#include <linux/i2c/pcf857x.h>
+
+#include "machtypes.h"
+#include "dev-gpio-buttons.h"
+#include "dev-leds-gpio.h"
+#include "dev-spi.h"
+#include "dev-usb.h"
+#include "pci.h"
+
+#define PB44_GPIO_I2C_SCL	0
+#define PB44_GPIO_I2C_SDA	1
+
+#define PB44_GPIO_EXP_BASE	16
+#define PB44_GPIO_SW_RESET	(PB44_GPIO_EXP_BASE + 6)
+#define PB44_GPIO_SW_JUMP	(PB44_GPIO_EXP_BASE + 8)
+#define PB44_GPIO_LED_JUMP1	(PB44_GPIO_EXP_BASE + 9)
+#define PB44_GPIO_LED_JUMP2	(PB44_GPIO_EXP_BASE + 10)
+
+#define PB44_KEYS_POLL_INTERVAL		20	/* msecs */
+#define PB44_KEYS_DEBOUNCE_INTERVAL	(3 * PB44_KEYS_POLL_INTERVAL)
+
+static struct i2c_gpio_platform_data pb44_i2c_gpio_data = {
+	.sda_pin	= PB44_GPIO_I2C_SDA,
+	.scl_pin	= PB44_GPIO_I2C_SCL,
+};
+
+static struct platform_device pb44_i2c_gpio_device = {
+	.name		= "i2c-gpio",
+	.id		= 0,
+	.dev = {
+		.platform_data	= &pb44_i2c_gpio_data,
+	}
+};
+
+static struct pcf857x_platform_data pb44_pcf857x_data = {
+	.gpio_base	= PB44_GPIO_EXP_BASE,
+};
+
+static struct i2c_board_info pb44_i2c_board_info[] __initdata = {
+	{
+		I2C_BOARD_INFO("pcf8575", 0x20),
+		.platform_data	= &pb44_pcf857x_data,
+	},
+};
+
+static struct gpio_led pb44_leds_gpio[] __initdata = {
+	{
+		.name		= "pb44:amber:jump1",
+		.gpio		= PB44_GPIO_LED_JUMP1,
+		.active_low	= 1,
+	}, {
+		.name		= "pb44:green:jump2",
+		.gpio		= PB44_GPIO_LED_JUMP2,
+		.active_low	= 1,
+	},
+};
+
+static struct gpio_keys_button pb44_gpio_keys[] __initdata = {
+	{
+		.desc		= "soft_reset",
+		.type		= EV_KEY,
+		.code		= KEY_RESTART,
+		.debounce_interval = PB44_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= PB44_GPIO_SW_RESET,
+		.active_low	= 1,
+	} , {
+		.desc		= "jumpstart",
+		.type		= EV_KEY,
+		.code		= KEY_WPS_BUTTON,
+		.debounce_interval = PB44_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= PB44_GPIO_SW_JUMP,
+		.active_low	= 1,
+	}
+};
+
+static struct spi_board_info pb44_spi_info[] = {
+	{
+		.bus_num	= 0,
+		.chip_select	= 0,
+		.max_speed_hz	= 25000000,
+		.modalias	= "m25p64",
+	},
+};
+
+static struct ath79_spi_platform_data pb44_spi_data = {
+	.bus_num		= 0,
+	.num_chipselect		= 1,
+};
+
+static void __init pb44_init(void)
+{
+	i2c_register_board_info(0, pb44_i2c_board_info,
+				ARRAY_SIZE(pb44_i2c_board_info));
+	platform_device_register(&pb44_i2c_gpio_device);
+
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(pb44_leds_gpio),
+				 pb44_leds_gpio);
+	ath79_register_gpio_keys_polled(-1, PB44_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(pb44_gpio_keys),
+					pb44_gpio_keys);
+	ath79_register_spi(&pb44_spi_data, pb44_spi_info,
+			   ARRAY_SIZE(pb44_spi_info));
+	ath79_register_usb();
+	ath79_register_pci();
+}
+
+MIPS_MACHINE(ATH79_MACH_PB44, "PB44", "Atheros PB44 reference board",
+	     pb44_init);