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, 402 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-sa1100/simpad.c b/kernel/arch/arm/mach-sa1100/simpad.c
new file mode 100644
index 000000000..41e476e57
--- /dev/null
+++ b/kernel/arch/arm/mach-sa1100/simpad.c
@@ -0,0 +1,402 @@
+/*
+ * linux/arch/arm/mach-sa1100/simpad.c
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/tty.h>
+#include <linux/proc_fs.h>
+#include <linux/string.h>
+#include <linux/pm.h>
+#include <linux/platform_data/sa11x0-serial.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/ucb1x00.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+
+#include <mach/hardware.h>
+#include <asm/setup.h>
+#include <asm/irq.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/flash.h>
+#include <asm/mach/map.h>
+#include <linux/platform_data/mfd-mcp-sa11x0.h>
+#include <mach/simpad.h>
+#include <mach/irqs.h>
+
+#include <linux/serial_core.h>
+#include <linux/ioport.h>
+#include <linux/input.h>
+#include <linux/gpio_keys.h>
+#include <linux/leds.h>
+#include <linux/i2c-gpio.h>
+
+#include "generic.h"
+
+/*
+ * CS3 support
+ */
+
+static long cs3_shadow;
+static spinlock_t cs3_lock;
+static struct gpio_chip cs3_gpio;
+
+long simpad_get_cs3_ro(void)
+{
+	return readl(CS3_BASE);
+}
+EXPORT_SYMBOL(simpad_get_cs3_ro);
+
+long simpad_get_cs3_shadow(void)
+{
+	return cs3_shadow;
+}
+EXPORT_SYMBOL(simpad_get_cs3_shadow);
+
+static void __simpad_write_cs3(void)
+{
+	writel(cs3_shadow, CS3_BASE);
+}
+
+void simpad_set_cs3_bit(int value)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&cs3_lock, flags);
+	cs3_shadow |= value;
+	__simpad_write_cs3();
+	spin_unlock_irqrestore(&cs3_lock, flags);
+}
+EXPORT_SYMBOL(simpad_set_cs3_bit);
+
+void simpad_clear_cs3_bit(int value)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&cs3_lock, flags);
+	cs3_shadow &= ~value;
+	__simpad_write_cs3();
+	spin_unlock_irqrestore(&cs3_lock, flags);
+}
+EXPORT_SYMBOL(simpad_clear_cs3_bit);
+
+static void cs3_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+	if (offset > 15)
+		return;
+	if (value)
+		simpad_set_cs3_bit(1 << offset);
+	else
+		simpad_clear_cs3_bit(1 << offset);
+};
+
+static int cs3_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+	if (offset > 15)
+		return simpad_get_cs3_ro() & (1 << (offset - 16));
+	return simpad_get_cs3_shadow() & (1 << offset);
+};
+
+static int cs3_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+{
+	if (offset > 15)
+		return 0;
+	return -EINVAL;
+};
+
+static int cs3_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
+	int value)
+{
+	if (offset > 15)
+		return -EINVAL;
+	cs3_gpio_set(chip, offset, value);
+	return 0;
+};
+
+static struct map_desc simpad_io_desc[] __initdata = {
+	{	/* MQ200 */
+		.virtual	=  0xf2800000,
+		.pfn		= __phys_to_pfn(0x4b800000),
+		.length		= 0x00800000,
+		.type		= MT_DEVICE
+	}, {	/* Simpad CS3 */
+		.virtual	= (unsigned long)CS3_BASE,
+		.pfn		= __phys_to_pfn(SA1100_CS3_PHYS),
+		.length		= 0x00100000,
+		.type		= MT_DEVICE
+	},
+};
+
+
+static void simpad_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
+{
+	if (port->mapbase == (u_int)&Ser1UTCR0) {
+		if (state)
+		{
+			simpad_clear_cs3_bit(RS232_ON);
+			simpad_clear_cs3_bit(DECT_POWER_ON);
+		}else
+		{
+			simpad_set_cs3_bit(RS232_ON);
+			simpad_set_cs3_bit(DECT_POWER_ON);
+		}
+	}
+}
+
+static struct sa1100_port_fns simpad_port_fns __initdata = {
+	.pm	   = simpad_uart_pm,
+};
+
+
+static struct mtd_partition simpad_partitions[] = {
+	{
+		.name       = "SIMpad boot firmware",
+		.size       = 0x00080000,
+		.offset     = 0,
+		.mask_flags = MTD_WRITEABLE,
+	}, {
+		.name       = "SIMpad kernel",
+		.size       = 0x0010000,
+		.offset     = MTDPART_OFS_APPEND,
+	}, {
+		.name       = "SIMpad root jffs2",
+		.size       = MTDPART_SIZ_FULL,
+		.offset     = MTDPART_OFS_APPEND,
+	}
+};
+
+static struct flash_platform_data simpad_flash_data = {
+	.map_name    = "cfi_probe",
+	.parts       = simpad_partitions,
+	.nr_parts    = ARRAY_SIZE(simpad_partitions),
+};
+
+
+static struct resource simpad_flash_resources [] = {
+	DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_16M),
+	DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_16M),
+};
+
+static struct ucb1x00_plat_data simpad_ucb1x00_data = {
+	.gpio_base	= SIMPAD_UCB1X00_GPIO_BASE,
+};
+
+static struct mcp_plat_data simpad_mcp_data = {
+	.mccr0		= MCCR0_ADM,
+	.sclk_rate	= 11981000,
+	.codec_pdata	= &simpad_ucb1x00_data,
+};
+
+
+
+static void __init simpad_map_io(void)
+{
+	sa1100_map_io();
+
+	iotable_init(simpad_io_desc, ARRAY_SIZE(simpad_io_desc));
+
+	/* Initialize CS3 */
+	cs3_shadow = (EN1 | EN0 | LED2_ON | DISPLAY_ON |
+		RS232_ON | ENABLE_5V | RESET_SIMCARD | DECT_POWER_ON);
+	__simpad_write_cs3(); /* Spinlocks not yet initialized */
+
+        sa1100_register_uart_fns(&simpad_port_fns);
+	sa1100_register_uart(0, 3);  /* serial interface */
+	sa1100_register_uart(1, 1);  /* DECT             */
+
+	// Reassign UART 1 pins
+	GAFR |= GPIO_UART_TXD | GPIO_UART_RXD;
+	GPDR |= GPIO_UART_TXD | GPIO_LDD13 | GPIO_LDD15;
+	GPDR &= ~GPIO_UART_RXD;
+	PPAR |= PPAR_UPR;
+
+	/*
+	 * Set up registers for sleep mode.
+	 */
+
+
+	PWER = PWER_GPIO0| PWER_RTC;
+	PGSR = 0x818;
+	PCFR = 0;
+	PSDR = 0;
+
+}
+
+static void simpad_power_off(void)
+{
+	local_irq_disable();
+	cs3_shadow = SD_MEDIAQ;
+	__simpad_write_cs3(); /* Bypass spinlock here */
+
+	/* disable internal oscillator, float CS lines */
+	PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS);
+	/* enable wake-up on GPIO0 */
+	PWER = GFER = GRER = PWER_GPIO0;
+	/*
+	 * set scratchpad to zero, just in case it is used as a
+	 * restart address by the bootloader.
+	 */
+	PSPR = 0;
+	PGSR = 0;
+	/* enter sleep mode */
+	PMCR = PMCR_SF;
+	while(1);
+
+	local_irq_enable(); /* we won't ever call it */
+
+
+}
+
+/*
+ * gpio_keys
+*/
+
+static struct gpio_keys_button simpad_button_table[] = {
+	{ KEY_POWER, IRQ_GPIO_POWER_BUTTON, 1, "power button" },
+};
+
+static struct gpio_keys_platform_data simpad_keys_data = {
+	.buttons = simpad_button_table,
+	.nbuttons = ARRAY_SIZE(simpad_button_table),
+};
+
+static struct platform_device simpad_keys = {
+	.name = "gpio-keys",
+	.dev = {
+		.platform_data = &simpad_keys_data,
+	},
+};
+
+static struct gpio_keys_button simpad_polled_button_table[] = {
+	{ KEY_PROG1, SIMPAD_UCB1X00_GPIO_PROG1, 1, "prog1 button" },
+	{ KEY_PROG2, SIMPAD_UCB1X00_GPIO_PROG2, 1, "prog2 button" },
+	{ KEY_UP,    SIMPAD_UCB1X00_GPIO_UP,    1, "up button" },
+	{ KEY_DOWN,  SIMPAD_UCB1X00_GPIO_DOWN,  1, "down button" },
+	{ KEY_LEFT,  SIMPAD_UCB1X00_GPIO_LEFT,  1, "left button" },
+	{ KEY_RIGHT, SIMPAD_UCB1X00_GPIO_RIGHT, 1, "right button" },
+};
+
+static struct gpio_keys_platform_data simpad_polled_keys_data = {
+	.buttons = simpad_polled_button_table,
+	.nbuttons = ARRAY_SIZE(simpad_polled_button_table),
+	.poll_interval = 50,
+};
+
+static struct platform_device simpad_polled_keys = {
+	.name = "gpio-keys-polled",
+	.dev = {
+		.platform_data = &simpad_polled_keys_data,
+	},
+};
+
+/*
+ * GPIO LEDs
+ */
+
+static struct gpio_led simpad_leds[] = {
+	{
+		.name = "simpad:power",
+		.gpio = SIMPAD_CS3_LED2_ON,
+		.active_low = 0,
+		.default_trigger = "default-on",
+	},
+};
+
+static struct gpio_led_platform_data simpad_led_data = {
+	.num_leds = ARRAY_SIZE(simpad_leds),
+	.leds = simpad_leds,
+};
+
+static struct platform_device simpad_gpio_leds = {
+	.name = "leds-gpio",
+	.id = 0,
+	.dev = {
+		.platform_data = &simpad_led_data,
+	},
+};
+
+/*
+ * i2c
+ */
+static struct i2c_gpio_platform_data simpad_i2c_data = {
+	.sda_pin = GPIO_GPIO21,
+	.scl_pin = GPIO_GPIO25,
+	.udelay = 10,
+	.timeout = HZ,
+};
+
+static struct platform_device simpad_i2c = {
+	.name = "i2c-gpio",
+	.id = 0,
+	.dev = {
+		.platform_data = &simpad_i2c_data,
+	},
+};
+
+/*
+ * MediaQ Video Device
+ */
+static struct platform_device simpad_mq200fb = {
+	.name = "simpad-mq200",
+	.id   = 0,
+};
+
+static struct platform_device *devices[] __initdata = {
+	&simpad_keys,
+	&simpad_polled_keys,
+	&simpad_mq200fb,
+	&simpad_gpio_leds,
+	&simpad_i2c,
+};
+
+
+
+static int __init simpad_init(void)
+{
+	int ret;
+
+	spin_lock_init(&cs3_lock);
+
+	cs3_gpio.label = "simpad_cs3";
+	cs3_gpio.base = SIMPAD_CS3_GPIO_BASE;
+	cs3_gpio.ngpio = 24;
+	cs3_gpio.set = cs3_gpio_set;
+	cs3_gpio.get = cs3_gpio_get;
+	cs3_gpio.direction_input = cs3_gpio_direction_input;
+	cs3_gpio.direction_output = cs3_gpio_direction_output;
+	ret = gpiochip_add(&cs3_gpio);
+	if (ret)
+		printk(KERN_WARNING "simpad: Unable to register cs3 GPIO device");
+
+	pm_power_off = simpad_power_off;
+
+	sa11x0_ppc_configure_mcp();
+	sa11x0_register_mtd(&simpad_flash_data, simpad_flash_resources,
+			      ARRAY_SIZE(simpad_flash_resources));
+	sa11x0_register_mcp(&simpad_mcp_data);
+
+	ret = platform_add_devices(devices, ARRAY_SIZE(devices));
+	if(ret)
+		printk(KERN_WARNING "simpad: Unable to register mq200 framebuffer device");
+
+	return 0;
+}
+
+arch_initcall(simpad_init);
+
+
+MACHINE_START(SIMPAD, "Simpad")
+	/* Maintainer: Holger Freyther */
+	.atag_offset	= 0x100,
+	.map_io		= simpad_map_io,
+	.nr_irqs	= SA1100_NR_IRQS,
+	.init_irq	= sa1100_init_irq,
+	.init_late	= sa11x0_init_late,
+	.init_time	= sa1100_timer_init,
+	.restart	= sa11x0_restart,
+MACHINE_END