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, 374 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-ep93xx/edb93xx.c b/kernel/arch/arm/mach-ep93xx/edb93xx.c
new file mode 100644
index 000000000..27b14ae92
--- /dev/null
+++ b/kernel/arch/arm/mach-ep93xx/edb93xx.c
@@ -0,0 +1,374 @@
+/*
+ * arch/arm/mach-ep93xx/edb93xx.c
+ * Cirrus Logic EDB93xx Development Board support.
+ *
+ * EDB93XX, EDB9301, EDB9307A
+ * Copyright (C) 2008-2009 H Hartley Sweeten <hsweeten@visionengravers.com>
+ *
+ * EDB9302
+ * Copyright (C) 2006 George Kashperko <george@chas.com.ua>
+ *
+ * EDB9302A, EDB9315, EDB9315A
+ * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
+ *
+ * EDB9307
+ * Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
+ *
+ * EDB9312
+ * Copyright (C) 2006 Infosys Technologies Limited
+ *                    Toufeeq Hussain <toufeeq_hussain@infosys.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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/i2c-gpio.h>
+#include <linux/spi/spi.h>
+
+#include <sound/cs4271.h>
+
+#include <mach/hardware.h>
+#include <linux/platform_data/video-ep93xx.h>
+#include <linux/platform_data/spi-ep93xx.h>
+#include <mach/gpio-ep93xx.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+
+#include "soc.h"
+
+static void __init edb93xx_register_flash(void)
+{
+	if (machine_is_edb9307() || machine_is_edb9312() ||
+	    machine_is_edb9315()) {
+		ep93xx_register_flash(4, EP93XX_CS6_PHYS_BASE, SZ_32M);
+	} else {
+		ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M);
+	}
+}
+
+static struct ep93xx_eth_data __initdata edb93xx_eth_data = {
+	.phy_id		= 1,
+};
+
+
+/*************************************************************************
+ * EDB93xx i2c peripheral handling
+ *************************************************************************/
+static struct i2c_gpio_platform_data __initdata edb93xx_i2c_gpio_data = {
+	.sda_pin		= EP93XX_GPIO_LINE_EEDAT,
+	.sda_is_open_drain	= 0,
+	.scl_pin		= EP93XX_GPIO_LINE_EECLK,
+	.scl_is_open_drain	= 0,
+	.udelay			= 0,	/* default to 100 kHz */
+	.timeout		= 0,	/* default to 100 ms */
+};
+
+static struct i2c_board_info __initdata edb93xxa_i2c_board_info[] = {
+	{
+		I2C_BOARD_INFO("isl1208", 0x6f),
+	},
+};
+
+static struct i2c_board_info __initdata edb93xx_i2c_board_info[] = {
+	{
+		I2C_BOARD_INFO("ds1337", 0x68),
+	},
+};
+
+static void __init edb93xx_register_i2c(void)
+{
+	if (machine_is_edb9302a() || machine_is_edb9307a() ||
+	    machine_is_edb9315a()) {
+		ep93xx_register_i2c(&edb93xx_i2c_gpio_data,
+				    edb93xxa_i2c_board_info,
+				    ARRAY_SIZE(edb93xxa_i2c_board_info));
+	} else if (machine_is_edb9302() || machine_is_edb9307()
+		|| machine_is_edb9312() || machine_is_edb9315()) {
+		ep93xx_register_i2c(&edb93xx_i2c_gpio_data,
+				    edb93xx_i2c_board_info,
+				    ARRAY_SIZE(edb93xx_i2c_board_info));
+	}
+}
+
+
+/*************************************************************************
+ * EDB93xx SPI peripheral handling
+ *************************************************************************/
+static struct cs4271_platform_data edb93xx_cs4271_data = {
+	.gpio_nreset	= -EINVAL,	/* filled in later */
+};
+
+static int edb93xx_cs4271_hw_setup(struct spi_device *spi)
+{
+	return gpio_request_one(EP93XX_GPIO_LINE_EGPIO6,
+				GPIOF_OUT_INIT_HIGH, spi->modalias);
+}
+
+static void edb93xx_cs4271_hw_cleanup(struct spi_device *spi)
+{
+	gpio_free(EP93XX_GPIO_LINE_EGPIO6);
+}
+
+static void edb93xx_cs4271_hw_cs_control(struct spi_device *spi, int value)
+{
+	gpio_set_value(EP93XX_GPIO_LINE_EGPIO6, value);
+}
+
+static struct ep93xx_spi_chip_ops edb93xx_cs4271_hw = {
+	.setup		= edb93xx_cs4271_hw_setup,
+	.cleanup	= edb93xx_cs4271_hw_cleanup,
+	.cs_control	= edb93xx_cs4271_hw_cs_control,
+};
+
+static struct spi_board_info edb93xx_spi_board_info[] __initdata = {
+	{
+		.modalias		= "cs4271",
+		.platform_data		= &edb93xx_cs4271_data,
+		.controller_data	= &edb93xx_cs4271_hw,
+		.max_speed_hz		= 6000000,
+		.bus_num		= 0,
+		.chip_select		= 0,
+		.mode			= SPI_MODE_3,
+	},
+};
+
+static struct ep93xx_spi_info edb93xx_spi_info __initdata = {
+	.num_chipselect	= ARRAY_SIZE(edb93xx_spi_board_info),
+};
+
+static void __init edb93xx_register_spi(void)
+{
+	if (machine_is_edb9301() || machine_is_edb9302())
+		edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1;
+	else if (machine_is_edb9302a() || machine_is_edb9307a())
+		edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2);
+	else if (machine_is_edb9315a())
+		edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14;
+
+	ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info,
+			    ARRAY_SIZE(edb93xx_spi_board_info));
+}
+
+
+/*************************************************************************
+ * EDB93xx I2S
+ *************************************************************************/
+static struct platform_device edb93xx_audio_device = {
+	.name		= "edb93xx-audio",
+	.id		= -1,
+};
+
+static int __init edb93xx_has_audio(void)
+{
+	return (machine_is_edb9301() || machine_is_edb9302() ||
+		machine_is_edb9302a() || machine_is_edb9307a() ||
+		machine_is_edb9315a());
+}
+
+static void __init edb93xx_register_i2s(void)
+{
+	if (edb93xx_has_audio()) {
+		ep93xx_register_i2s();
+		platform_device_register(&edb93xx_audio_device);
+	}
+}
+
+
+/*************************************************************************
+ * EDB93xx pwm
+ *************************************************************************/
+static void __init edb93xx_register_pwm(void)
+{
+	if (machine_is_edb9301() ||
+	    machine_is_edb9302() || machine_is_edb9302a()) {
+		/* EP9301 and EP9302 only have pwm.1 (EGPIO14) */
+		ep93xx_register_pwm(0, 1);
+	} else if (machine_is_edb9307() || machine_is_edb9307a()) {
+		/* EP9307 only has pwm.0 (PWMOUT) */
+		ep93xx_register_pwm(1, 0);
+	} else {
+		/* EP9312 and EP9315 have both */
+		ep93xx_register_pwm(1, 1);
+	}
+}
+
+
+/*************************************************************************
+ * EDB93xx framebuffer
+ *************************************************************************/
+static struct ep93xxfb_mach_info __initdata edb93xxfb_info = {
+	.num_modes	= EP93XXFB_USE_MODEDB,
+	.bpp		= 16,
+	.flags		= 0,
+};
+
+static int __init edb93xx_has_fb(void)
+{
+	/* These platforms have an ep93xx with video capability */
+	return machine_is_edb9307() || machine_is_edb9307a() ||
+	       machine_is_edb9312() || machine_is_edb9315() ||
+	       machine_is_edb9315a();
+}
+
+static void __init edb93xx_register_fb(void)
+{
+	if (!edb93xx_has_fb())
+		return;
+
+	if (machine_is_edb9307a() || machine_is_edb9315a())
+		edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0;
+	else
+		edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3;
+
+	ep93xx_register_fb(&edb93xxfb_info);
+}
+
+
+/*************************************************************************
+ * EDB93xx IDE
+ *************************************************************************/
+static int __init edb93xx_has_ide(void)
+{
+	/*
+	 * Although EDB9312 and EDB9315 do have IDE capability, they have
+	 * INTRQ line wired as pull-up, which makes using IDE interface
+	 * problematic.
+	 */
+	return machine_is_edb9312() || machine_is_edb9315() ||
+	       machine_is_edb9315a();
+}
+
+static void __init edb93xx_register_ide(void)
+{
+	if (!edb93xx_has_ide())
+		return;
+
+	ep93xx_register_ide();
+}
+
+
+static void __init edb93xx_init_machine(void)
+{
+	ep93xx_init_devices();
+	edb93xx_register_flash();
+	ep93xx_register_eth(&edb93xx_eth_data, 1);
+	edb93xx_register_i2c();
+	edb93xx_register_spi();
+	edb93xx_register_i2s();
+	edb93xx_register_pwm();
+	edb93xx_register_fb();
+	edb93xx_register_ide();
+}
+
+
+#ifdef CONFIG_MACH_EDB9301
+MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board")
+	/* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
+	.atag_offset	= 0x100,
+	.map_io		= ep93xx_map_io,
+	.init_irq	= ep93xx_init_irq,
+	.init_time	= ep93xx_timer_init,
+	.init_machine	= edb93xx_init_machine,
+	.init_late	= ep93xx_init_late,
+	.restart	= ep93xx_restart,
+MACHINE_END
+#endif
+
+#ifdef CONFIG_MACH_EDB9302
+MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board")
+	/* Maintainer: George Kashperko <george@chas.com.ua> */
+	.atag_offset	= 0x100,
+	.map_io		= ep93xx_map_io,
+	.init_irq	= ep93xx_init_irq,
+	.init_time	= ep93xx_timer_init,
+	.init_machine	= edb93xx_init_machine,
+	.init_late	= ep93xx_init_late,
+	.restart	= ep93xx_restart,
+MACHINE_END
+#endif
+
+#ifdef CONFIG_MACH_EDB9302A
+MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board")
+	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
+	.atag_offset	= 0x100,
+	.map_io		= ep93xx_map_io,
+	.init_irq	= ep93xx_init_irq,
+	.init_time	= ep93xx_timer_init,
+	.init_machine	= edb93xx_init_machine,
+	.init_late	= ep93xx_init_late,
+	.restart	= ep93xx_restart,
+MACHINE_END
+#endif
+
+#ifdef CONFIG_MACH_EDB9307
+MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board")
+	/* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
+	.atag_offset	= 0x100,
+	.map_io		= ep93xx_map_io,
+	.init_irq	= ep93xx_init_irq,
+	.init_time	= ep93xx_timer_init,
+	.init_machine	= edb93xx_init_machine,
+	.init_late	= ep93xx_init_late,
+	.restart	= ep93xx_restart,
+MACHINE_END
+#endif
+
+#ifdef CONFIG_MACH_EDB9307A
+MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board")
+	/* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
+	.atag_offset	= 0x100,
+	.map_io		= ep93xx_map_io,
+	.init_irq	= ep93xx_init_irq,
+	.init_time	= ep93xx_timer_init,
+	.init_machine	= edb93xx_init_machine,
+	.init_late	= ep93xx_init_late,
+	.restart	= ep93xx_restart,
+MACHINE_END
+#endif
+
+#ifdef CONFIG_MACH_EDB9312
+MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board")
+	/* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */
+	.atag_offset	= 0x100,
+	.map_io		= ep93xx_map_io,
+	.init_irq	= ep93xx_init_irq,
+	.init_time	= ep93xx_timer_init,
+	.init_machine	= edb93xx_init_machine,
+	.init_late	= ep93xx_init_late,
+	.restart	= ep93xx_restart,
+MACHINE_END
+#endif
+
+#ifdef CONFIG_MACH_EDB9315
+MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board")
+	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
+	.atag_offset	= 0x100,
+	.map_io		= ep93xx_map_io,
+	.init_irq	= ep93xx_init_irq,
+	.init_time	= ep93xx_timer_init,
+	.init_machine	= edb93xx_init_machine,
+	.init_late	= ep93xx_init_late,
+	.restart	= ep93xx_restart,
+MACHINE_END
+#endif
+
+#ifdef CONFIG_MACH_EDB9315A
+MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board")
+	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
+	.atag_offset	= 0x100,
+	.map_io		= ep93xx_map_io,
+	.init_irq	= ep93xx_init_irq,
+	.init_time	= ep93xx_timer_init,
+	.init_machine	= edb93xx_init_machine,
+	.init_late	= ep93xx_init_late,
+	.restart	= ep93xx_restart,
+MACHINE_END
+#endif