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, 612 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-s3c24xx/mach-n30.c b/kernel/arch/arm/mach-s3c24xx/mach-n30.c
new file mode 100644
index 000000000..171c1f11f
--- /dev/null
+++ b/kernel/arch/arm/mach-s3c24xx/mach-n30.c
@@ -0,0 +1,612 @@
+/* Machine specific code for the Acer n30, Acer N35, Navman PiN 570,
+ * Yakumo AlphaX and Airis NC05 PDAs.
+ *
+ * Copyright (c) 2003-2005 Simtec Electronics
+ *	Ben Dooks <ben@simtec.co.uk>
+ *
+ * Copyright (c) 2005-2008 Christer Weinigel <christer@weinigel.se>
+ *
+ * There is a wiki with more information about the n30 port at
+ * http://handhelds.org/moin/moin.cgi/AcerN30Documentation .
+ *
+ * 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/kernel.h>
+#include <linux/types.h>
+
+#include <linux/gpio_keys.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/serial_core.h>
+#include <linux/serial_s3c.h>
+#include <linux/timer.h>
+#include <linux/io.h>
+#include <linux/mmc/host.h>
+
+#include <mach/hardware.h>
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+
+#include <mach/fb.h>
+#include <linux/platform_data/leds-s3c24xx.h>
+#include <mach/regs-gpio.h>
+#include <mach/regs-lcd.h>
+#include <mach/gpio-samsung.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/map.h>
+
+#include <linux/platform_data/i2c-s3c2410.h>
+
+#include <plat/cpu.h>
+#include <plat/devs.h>
+#include <linux/platform_data/mmc-s3cmci.h>
+#include <linux/platform_data/usb-s3c2410_udc.h>
+#include <plat/samsung-time.h>
+
+#include "common.h"
+
+static struct map_desc n30_iodesc[] __initdata = {
+	/* nothing here yet */
+};
+
+static struct s3c2410_uartcfg n30_uartcfgs[] = {
+	/* Normal serial port */
+	[0] = {
+		.hwport	     = 0,
+		.flags	     = 0,
+		.ucon	     = 0x2c5,
+		.ulcon	     = 0x03,
+		.ufcon	     = 0x51,
+	},
+	/* IR port */
+	[1] = {
+		.hwport	     = 1,
+		.flags	     = 0,
+		.uart_flags  = UPF_CONS_FLOW,
+		.ucon	     = 0x2c5,
+		.ulcon	     = 0x43,
+		.ufcon	     = 0x51,
+	},
+	/* On the N30 the bluetooth controller is connected here.
+	 * On the N35 and variants the GPS receiver is connected here. */
+	[2] = {
+		.hwport	     = 2,
+		.flags	     = 0,
+		.ucon	     = 0x2c5,
+		.ulcon	     = 0x03,
+		.ufcon	     = 0x51,
+	},
+};
+
+static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
+	.vbus_pin		= S3C2410_GPG(1),
+	.vbus_pin_inverted	= 0,
+	.pullup_pin		= S3C2410_GPB(3),
+};
+
+static struct gpio_keys_button n30_buttons[] = {
+	{
+		.gpio		= S3C2410_GPF(0),
+		.code		= KEY_POWER,
+		.desc		= "Power",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG(9),
+		.code		= KEY_UP,
+		.desc		= "Thumbwheel Up",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG(8),
+		.code		= KEY_DOWN,
+		.desc		= "Thumbwheel Down",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG(7),
+		.code		= KEY_ENTER,
+		.desc		= "Thumbwheel Press",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF(7),
+		.code		= KEY_HOMEPAGE,
+		.desc		= "Home",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF(6),
+		.code		= KEY_CALENDAR,
+		.desc		= "Calendar",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF(5),
+		.code		= KEY_ADDRESSBOOK,
+		.desc		= "Contacts",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF(4),
+		.code		= KEY_MAIL,
+		.desc		= "Mail",
+		.active_low	= 0,
+	},
+};
+
+static struct gpio_keys_platform_data n30_button_data = {
+	.buttons	= n30_buttons,
+	.nbuttons	= ARRAY_SIZE(n30_buttons),
+};
+
+static struct platform_device n30_button_device = {
+	.name		= "gpio-keys",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= &n30_button_data,
+	}
+};
+
+static struct gpio_keys_button n35_buttons[] = {
+	{
+		.gpio		= S3C2410_GPF(0),
+		.code		= KEY_POWER,
+		.type		= EV_PWR,
+		.desc		= "Power",
+		.active_low	= 0,
+		.wakeup		= 1,
+	},
+	{
+		.gpio		= S3C2410_GPG(9),
+		.code		= KEY_UP,
+		.desc		= "Joystick Up",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG(8),
+		.code		= KEY_DOWN,
+		.desc		= "Joystick Down",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG(6),
+		.code		= KEY_DOWN,
+		.desc		= "Joystick Left",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG(5),
+		.code		= KEY_DOWN,
+		.desc		= "Joystick Right",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG(7),
+		.code		= KEY_ENTER,
+		.desc		= "Joystick Press",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF(7),
+		.code		= KEY_HOMEPAGE,
+		.desc		= "Home",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF(6),
+		.code		= KEY_CALENDAR,
+		.desc		= "Calendar",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF(5),
+		.code		= KEY_ADDRESSBOOK,
+		.desc		= "Contacts",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF(4),
+		.code		= KEY_MAIL,
+		.desc		= "Mail",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF(3),
+		.code		= SW_RADIO,
+		.desc		= "GPS Antenna",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG(2),
+		.code		= SW_HEADPHONE_INSERT,
+		.desc		= "Headphone",
+		.active_low	= 0,
+	},
+};
+
+static struct gpio_keys_platform_data n35_button_data = {
+	.buttons	= n35_buttons,
+	.nbuttons	= ARRAY_SIZE(n35_buttons),
+};
+
+static struct platform_device n35_button_device = {
+	.name		= "gpio-keys",
+	.id		= -1,
+	.num_resources	= 0,
+	.dev		= {
+		.platform_data	= &n35_button_data,
+	}
+};
+
+/* This is the bluetooth LED on the device. */
+static struct s3c24xx_led_platdata n30_blue_led_pdata = {
+	.name		= "blue_led",
+	.gpio		= S3C2410_GPG(6),
+	.def_trigger	= "",
+};
+
+/* This is the blue LED on the device. Originally used to indicate GPS activity
+ * by flashing. */
+static struct s3c24xx_led_platdata n35_blue_led_pdata = {
+	.name		= "blue_led",
+	.gpio		= S3C2410_GPD(8),
+	.def_trigger	= "",
+};
+
+/* This LED is driven by the battery microcontroller, and is blinking
+ * red, blinking green or solid green when the battery is low,
+ * charging or full respectively.  By driving GPD9 low, it's possible
+ * to force the LED to blink red, so call that warning LED.  */
+static struct s3c24xx_led_platdata n30_warning_led_pdata = {
+	.name		= "warning_led",
+	.flags          = S3C24XX_LEDF_ACTLOW,
+	.gpio		= S3C2410_GPD(9),
+	.def_trigger	= "",
+};
+
+static struct s3c24xx_led_platdata n35_warning_led_pdata = {
+	.name		= "warning_led",
+	.flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
+	.gpio		= S3C2410_GPD(9),
+	.def_trigger	= "",
+};
+
+static struct platform_device n30_blue_led = {
+	.name		= "s3c24xx_led",
+	.id		= 1,
+	.dev		= {
+		.platform_data	= &n30_blue_led_pdata,
+	},
+};
+
+static struct platform_device n35_blue_led = {
+	.name		= "s3c24xx_led",
+	.id		= 1,
+	.dev		= {
+		.platform_data	= &n35_blue_led_pdata,
+	},
+};
+
+static struct platform_device n30_warning_led = {
+	.name		= "s3c24xx_led",
+	.id		= 2,
+	.dev		= {
+		.platform_data	= &n30_warning_led_pdata,
+	},
+};
+
+static struct platform_device n35_warning_led = {
+	.name		= "s3c24xx_led",
+	.id		= 2,
+	.dev		= {
+		.platform_data	= &n35_warning_led_pdata,
+	},
+};
+
+static struct s3c2410fb_display n30_display __initdata = {
+	.type		= S3C2410_LCDCON1_TFT,
+	.width		= 240,
+	.height		= 320,
+	.pixclock	= 170000,
+
+	.xres		= 240,
+	.yres		= 320,
+	.bpp		= 16,
+	.left_margin	= 3,
+	.right_margin	= 40,
+	.hsync_len	= 40,
+	.upper_margin	= 2,
+	.lower_margin	= 3,
+	.vsync_len	= 2,
+
+	.lcdcon5 = S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME,
+};
+
+static struct s3c2410fb_mach_info n30_fb_info __initdata = {
+	.displays	= &n30_display,
+	.num_displays	= 1,
+	.default_display = 0,
+	.lpcsel		= 0x06,
+};
+
+static void n30_sdi_set_power(unsigned char power_mode, unsigned short vdd)
+{
+	switch (power_mode) {
+	case MMC_POWER_ON:
+	case MMC_POWER_UP:
+		gpio_set_value(S3C2410_GPG(4), 1);
+		break;
+	case MMC_POWER_OFF:
+	default:
+		gpio_set_value(S3C2410_GPG(4), 0);
+		break;
+	}
+}
+
+static struct s3c24xx_mci_pdata n30_mci_cfg __initdata = {
+	.gpio_detect	= S3C2410_GPF(1),
+	.gpio_wprotect  = S3C2410_GPG(10),
+	.ocr_avail	= MMC_VDD_32_33,
+	.set_power	= n30_sdi_set_power,
+};
+
+static struct platform_device *n30_devices[] __initdata = {
+	&s3c_device_lcd,
+	&s3c_device_wdt,
+	&s3c_device_i2c0,
+	&s3c_device_iis,
+	&s3c_device_ohci,
+	&s3c_device_rtc,
+	&s3c_device_usbgadget,
+	&s3c_device_sdi,
+	&n30_button_device,
+	&n30_blue_led,
+	&n30_warning_led,
+};
+
+static struct platform_device *n35_devices[] __initdata = {
+	&s3c_device_lcd,
+	&s3c_device_wdt,
+	&s3c_device_i2c0,
+	&s3c_device_iis,
+	&s3c_device_rtc,
+	&s3c_device_usbgadget,
+	&s3c_device_sdi,
+	&n35_button_device,
+	&n35_blue_led,
+	&n35_warning_led,
+};
+
+static struct s3c2410_platform_i2c __initdata n30_i2ccfg = {
+	.flags		= 0,
+	.slave_addr	= 0x10,
+	.frequency	= 10*1000,
+};
+
+/* Lots of hardcoded stuff, but it sets up the hardware in a useful
+ * state so that we can boot Linux directly from flash. */
+static void __init n30_hwinit(void)
+{
+	/* GPA0-11 special functions -- unknown what they do
+	 * GPA12 N30 special function -- unknown what it does
+	 *       N35/PiN output -- unknown what it does
+	 *
+	 * A12 is nGCS1 on the N30 and an output on the N35/PiN.  I
+	 * don't think it does anything useful on the N30, so I ought
+	 * to make it an output there too since it always driven to 0
+	 * as far as I can tell. */
+	if (machine_is_n30())
+		__raw_writel(0x007fffff, S3C2410_GPACON);
+	if (machine_is_n35())
+		__raw_writel(0x007fefff, S3C2410_GPACON);
+	__raw_writel(0x00000000, S3C2410_GPADAT);
+
+	/* GPB0 TOUT0 backlight level
+	 * GPB1 output 1=backlight on
+	 * GPB2 output IrDA enable 0=transceiver enabled, 1=disabled
+	 * GPB3 output USB D+ pull up 0=disabled, 1=enabled
+	 * GPB4 N30 output -- unknown function
+	 *      N30/PiN GPS control 0=GPS enabled, 1=GPS disabled
+	 * GPB5 output -- unknown function
+	 * GPB6 input -- unknown function
+	 * GPB7 output -- unknown function
+	 * GPB8 output -- probably LCD driver enable
+	 * GPB9 output -- probably LCD VSYNC driver enable
+	 * GPB10 output -- probably LCD HSYNC driver enable
+	 */
+	__raw_writel(0x00154556, S3C2410_GPBCON);
+	__raw_writel(0x00000750, S3C2410_GPBDAT);
+	__raw_writel(0x00000073, S3C2410_GPBUP);
+
+	/* GPC0 input RS232 DCD/DSR/RI
+	 * GPC1 LCD
+	 * GPC2 output RS232 DTR?
+	 * GPC3 input RS232 DCD/DSR/RI
+	 * GPC4 LCD
+	 * GPC5 output 0=NAND write enabled, 1=NAND write protect
+	 * GPC6 input -- unknown function
+	 * GPC7 input charger status 0=charger connected
+	 *      this input can be triggered by power on the USB device
+	 *      port too, but will go back to disconnected soon after.
+	 * GPC8 N30/N35 output -- unknown function, always driven to 1
+	 *      PiN input -- unknown function, always read as 1
+	 *      Make it an input with a pull up for all models.
+	 * GPC9-15 LCD
+	 */
+	__raw_writel(0xaaa80618, S3C2410_GPCCON);
+	__raw_writel(0x0000014c, S3C2410_GPCDAT);
+	__raw_writel(0x0000fef2, S3C2410_GPCUP);
+
+	/* GPD0 input -- unknown function
+	 * GPD1-D7 LCD
+	 * GPD8 N30 output -- unknown function
+	 *      N35/PiN output 1=GPS LED on
+	 * GPD9 output 0=power led blinks red, 1=normal power led function
+	 * GPD10 output -- unknown function
+	 * GPD11-15 LCD drivers
+	 */
+	__raw_writel(0xaa95aaa4, S3C2410_GPDCON);
+	__raw_writel(0x00000601, S3C2410_GPDDAT);
+	__raw_writel(0x0000fbfe, S3C2410_GPDUP);
+
+	/* GPE0-4 I2S audio bus
+	 * GPE5-10 SD/MMC bus
+	 * E11-13 outputs -- unknown function, probably power management
+	 * E14-15 I2C bus connected to the battery controller
+	 */
+	__raw_writel(0xa56aaaaa, S3C2410_GPECON);
+	__raw_writel(0x0000efc5, S3C2410_GPEDAT);
+	__raw_writel(0x0000f81f, S3C2410_GPEUP);
+
+	/* GPF0  input 0=power button pressed
+	 * GPF1  input SD/MMC switch 0=card present
+	 * GPF2  N30 1=reset button pressed (inverted compared to the rest)
+	 *	 N35/PiN 0=reset button pressed
+	 * GPF3  N30/PiN input -- unknown function
+	 *       N35 input GPS antenna position, 0=antenna closed, 1=open
+	 * GPF4  input 0=button 4 pressed
+	 * GPF5  input 0=button 3 pressed
+	 * GPF6  input 0=button 2 pressed
+	 * GPF7  input 0=button 1 pressed
+	 */
+	__raw_writel(0x0000aaaa, S3C2410_GPFCON);
+	__raw_writel(0x00000000, S3C2410_GPFDAT);
+	__raw_writel(0x000000ff, S3C2410_GPFUP);
+
+	/* GPG0  input RS232 DCD/DSR/RI
+	 * GPG1  input 1=USB gadget port has power from a host
+	 * GPG2  N30 input -- unknown function
+	 *       N35/PiN input 0=headphones plugged in, 1=not plugged in
+	 * GPG3  N30 output -- unknown function
+	 *       N35/PiN input with unknown function
+	 * GPG4  N30 output 0=MMC enabled, 1=MMC disabled
+	 * GPG5  N30 output 0=BlueTooth chip disabled, 1=enabled
+	 *       N35/PiN input joystick right
+	 * GPG6  N30 output 0=blue led on, 1=off
+	 *       N35/PiN input joystick left
+	 * GPG7  input 0=thumbwheel pressed
+	 * GPG8  input 0=thumbwheel down
+	 * GPG9  input 0=thumbwheel up
+	 * GPG10 input SD/MMC write protect switch
+	 * GPG11 N30 input -- unknown function
+	 *       N35 output 0=GPS antenna powered, 1=not powered
+	 *       PiN output -- unknown function
+	 * GPG12-15 touch screen functions
+	 *
+	 * The pullups differ between the models, so enable all
+	 * pullups that are enabled on any of the models.
+	 */
+	if (machine_is_n30())
+		__raw_writel(0xff0a956a, S3C2410_GPGCON);
+	if (machine_is_n35())
+		__raw_writel(0xff4aa92a, S3C2410_GPGCON);
+	__raw_writel(0x0000e800, S3C2410_GPGDAT);
+	__raw_writel(0x0000f86f, S3C2410_GPGUP);
+
+	/* GPH0/1/2/3 RS232 serial port
+	 * GPH4/5 IrDA serial port
+	 * GPH6/7  N30 BlueTooth serial port
+	 *         N35/PiN GPS receiver
+	 * GPH8 input -- unknown function
+	 * GPH9 CLKOUT0 HCLK -- unknown use
+	 * GPH10 CLKOUT1 FCLK -- unknown use
+	 *
+	 * The pull ups for H6/H7 are enabled on N30 but not on the
+	 * N35/PiN.  I suppose is useful for a budget model of the N30
+	 * with no bluetooh.  It doesn't hurt to have the pull ups
+	 * enabled on the N35, so leave them enabled for all models.
+	 */
+	__raw_writel(0x0028aaaa, S3C2410_GPHCON);
+	__raw_writel(0x000005ef, S3C2410_GPHDAT);
+	__raw_writel(0x0000063f, S3C2410_GPHUP);
+}
+
+static void __init n30_map_io(void)
+{
+	s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
+	n30_hwinit();
+	s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
+	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
+}
+
+static void __init n30_init_time(void)
+{
+	s3c2410_init_clocks(12000000);
+	samsung_timer_init();
+}
+
+/* GPB3 is the line that controls the pull-up for the USB D+ line */
+
+static void __init n30_init(void)
+{
+	WARN_ON(gpio_request(S3C2410_GPG(4), "mmc power"));
+
+	s3c24xx_fb_set_platdata(&n30_fb_info);
+	s3c24xx_udc_set_platdata(&n30_udc_cfg);
+	s3c24xx_mci_set_platdata(&n30_mci_cfg);
+	s3c_i2c0_set_platdata(&n30_i2ccfg);
+
+	/* Turn off suspend on both USB ports, and switch the
+	 * selectable USB port to USB device mode. */
+
+	s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
+			      S3C2410_MISCCR_USBSUSPND0 |
+			      S3C2410_MISCCR_USBSUSPND1, 0x0);
+
+	if (machine_is_n30()) {
+		/* Turn off suspend on both USB ports, and switch the
+		 * selectable USB port to USB device mode. */
+		s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
+				      S3C2410_MISCCR_USBSUSPND0 |
+				      S3C2410_MISCCR_USBSUSPND1, 0x0);
+
+		platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
+	}
+
+	if (machine_is_n35()) {
+		/* Turn off suspend and switch the selectable USB port
+		 * to USB device mode.  Turn on suspend for the host
+		 * port since it is not connected on the N35.
+		 *
+		 * Actually, the host port is available at some pads
+		 * on the back of the device, so it would actually be
+		 * possible to add a USB device inside the N35 if you
+		 * are willing to do some hardware modifications. */
+		s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
+				      S3C2410_MISCCR_USBSUSPND0 |
+				      S3C2410_MISCCR_USBSUSPND1,
+				      S3C2410_MISCCR_USBSUSPND0);
+
+		platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices));
+	}
+}
+
+MACHINE_START(N30, "Acer-N30")
+	/* Maintainer: Christer Weinigel <christer@weinigel.se>,
+				Ben Dooks <ben-linux@fluff.org>
+	*/
+	.atag_offset	= 0x100,
+	.init_time	= n30_init_time,
+	.init_machine	= n30_init,
+	.init_irq	= s3c2410_init_irq,
+	.map_io		= n30_map_io,
+MACHINE_END
+
+MACHINE_START(N35, "Acer-N35")
+	/* Maintainer: Christer Weinigel <christer@weinigel.se>
+	*/
+	.atag_offset	= 0x100,
+	.init_time	= n30_init_time,
+	.init_machine	= n30_init,
+	.init_irq	= s3c2410_init_irq,
+	.map_io		= n30_map_io,
+MACHINE_END