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, 427 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-imx/mach-pca100.c b/kernel/arch/arm/mach-imx/mach-pca100.c
new file mode 100644
index 000000000..2d1c50bd8
--- /dev/null
+++ b/kernel/arch/arm/mach-imx/mach-pca100.c
@@ -0,0 +1,427 @@
+/*
+ * Copyright 2007 Robert Schwebel <r.schwebel@pengutronix.de>, Pengutronix
+ * Copyright (C) 2009 Sascha Hauer (kernel@pengutronix.de)
+ *
+ * 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.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/i2c.h>
+#include <linux/platform_data/at24.h>
+#include <linux/dma-mapping.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/eeprom.h>
+#include <linux/irq.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/ulpi.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach-types.h>
+#include <asm/mach/time.h>
+
+#include "common.h"
+#include "devices-imx27.h"
+#include "ehci.h"
+#include "hardware.h"
+#include "iomux-mx27.h"
+#include "ulpi.h"
+
+#define OTG_PHY_CS_GPIO (GPIO_PORTB + 23)
+#define USBH2_PHY_CS_GPIO (GPIO_PORTB + 24)
+#define SPI1_SS0 (GPIO_PORTD + 28)
+#define SPI1_SS1 (GPIO_PORTD + 27)
+#define SD2_CD (GPIO_PORTC + 29)
+
+static const int pca100_pins[] __initconst = {
+	/* UART1 */
+	PE12_PF_UART1_TXD,
+	PE13_PF_UART1_RXD,
+	PE14_PF_UART1_CTS,
+	PE15_PF_UART1_RTS,
+	/* SDHC */
+	PB4_PF_SD2_D0,
+	PB5_PF_SD2_D1,
+	PB6_PF_SD2_D2,
+	PB7_PF_SD2_D3,
+	PB8_PF_SD2_CMD,
+	PB9_PF_SD2_CLK,
+	SD2_CD | GPIO_GPIO | GPIO_IN,
+	/* FEC */
+	PD0_AIN_FEC_TXD0,
+	PD1_AIN_FEC_TXD1,
+	PD2_AIN_FEC_TXD2,
+	PD3_AIN_FEC_TXD3,
+	PD4_AOUT_FEC_RX_ER,
+	PD5_AOUT_FEC_RXD1,
+	PD6_AOUT_FEC_RXD2,
+	PD7_AOUT_FEC_RXD3,
+	PD8_AF_FEC_MDIO,
+	PD9_AIN_FEC_MDC,
+	PD10_AOUT_FEC_CRS,
+	PD11_AOUT_FEC_TX_CLK,
+	PD12_AOUT_FEC_RXD0,
+	PD13_AOUT_FEC_RX_DV,
+	PD14_AOUT_FEC_RX_CLK,
+	PD15_AOUT_FEC_COL,
+	PD16_AIN_FEC_TX_ER,
+	PF23_AIN_FEC_TX_EN,
+	/* SSI1 */
+	PC20_PF_SSI1_FS,
+	PC21_PF_SSI1_RXD,
+	PC22_PF_SSI1_TXD,
+	PC23_PF_SSI1_CLK,
+	/* onboard I2C */
+	PC5_PF_I2C2_SDA,
+	PC6_PF_I2C2_SCL,
+	/* external I2C */
+	PD17_PF_I2C_DATA,
+	PD18_PF_I2C_CLK,
+	/* SPI1 */
+	PD25_PF_CSPI1_RDY,
+	PD29_PF_CSPI1_SCLK,
+	PD30_PF_CSPI1_MISO,
+	PD31_PF_CSPI1_MOSI,
+	/* OTG */
+	OTG_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
+	PC7_PF_USBOTG_DATA5,
+	PC8_PF_USBOTG_DATA6,
+	PC9_PF_USBOTG_DATA0,
+	PC10_PF_USBOTG_DATA2,
+	PC11_PF_USBOTG_DATA1,
+	PC12_PF_USBOTG_DATA4,
+	PC13_PF_USBOTG_DATA3,
+	PE0_PF_USBOTG_NXT,
+	PE1_PF_USBOTG_STP,
+	PE2_PF_USBOTG_DIR,
+	PE24_PF_USBOTG_CLK,
+	PE25_PF_USBOTG_DATA7,
+	/* USBH2 */
+	USBH2_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
+	PA0_PF_USBH2_CLK,
+	PA1_PF_USBH2_DIR,
+	PA2_PF_USBH2_DATA7,
+	PA3_PF_USBH2_NXT,
+	PA4_PF_USBH2_STP,
+	PD19_AF_USBH2_DATA4,
+	PD20_AF_USBH2_DATA3,
+	PD21_AF_USBH2_DATA6,
+	PD22_AF_USBH2_DATA0,
+	PD23_AF_USBH2_DATA2,
+	PD24_AF_USBH2_DATA1,
+	PD26_AF_USBH2_DATA5,
+	/* display */
+	PA5_PF_LSCLK,
+	PA6_PF_LD0,
+	PA7_PF_LD1,
+	PA8_PF_LD2,
+	PA9_PF_LD3,
+	PA10_PF_LD4,
+	PA11_PF_LD5,
+	PA12_PF_LD6,
+	PA13_PF_LD7,
+	PA14_PF_LD8,
+	PA15_PF_LD9,
+	PA16_PF_LD10,
+	PA17_PF_LD11,
+	PA18_PF_LD12,
+	PA19_PF_LD13,
+	PA20_PF_LD14,
+	PA21_PF_LD15,
+	PA22_PF_LD16,
+	PA23_PF_LD17,
+	PA26_PF_PS,
+	PA28_PF_HSYNC,
+	PA29_PF_VSYNC,
+	PA31_PF_OE_ACD,
+	/* free GPIO */
+	GPIO_PORTC | 31 | GPIO_GPIO | GPIO_IN, /* GPIO0_IRQ */
+	GPIO_PORTC | 25 | GPIO_GPIO | GPIO_IN, /* GPIO1_IRQ */
+	GPIO_PORTE | 5 | GPIO_GPIO | GPIO_IN, /* GPIO2_IRQ */
+};
+
+static const struct imxuart_platform_data uart_pdata __initconst = {
+	.flags = IMXUART_HAVE_RTSCTS,
+};
+
+static const struct mxc_nand_platform_data
+pca100_nand_board_info __initconst = {
+	.width = 1,
+	.hw_ecc = 1,
+};
+
+static const struct imxi2c_platform_data pca100_i2c1_data __initconst = {
+	.bitrate = 100000,
+};
+
+static struct at24_platform_data board_eeprom = {
+	.byte_len = 4096,
+	.page_size = 32,
+	.flags = AT24_FLAG_ADDR16,
+};
+
+static struct i2c_board_info pca100_i2c_devices[] = {
+	{
+		I2C_BOARD_INFO("at24", 0x52), /* E0=0, E1=1, E2=0 */
+		.platform_data = &board_eeprom,
+	}, {
+		I2C_BOARD_INFO("pcf8563", 0x51),
+	}, {
+		I2C_BOARD_INFO("lm75", 0x4a),
+	}
+};
+
+static struct spi_eeprom at25320 = {
+	.name		= "at25320an",
+	.byte_len	= 4096,
+	.page_size	= 32,
+	.flags		= EE_ADDR2,
+};
+
+static struct spi_board_info pca100_spi_board_info[] __initdata = {
+	{
+		.modalias = "at25",
+		.max_speed_hz = 30000,
+		.bus_num = 0,
+		.chip_select = 1,
+		.platform_data = &at25320,
+	},
+};
+
+static int pca100_spi_cs[] = {SPI1_SS0, SPI1_SS1};
+
+static const struct spi_imx_master pca100_spi0_data __initconst = {
+	.chipselect	= pca100_spi_cs,
+	.num_chipselect = ARRAY_SIZE(pca100_spi_cs),
+};
+
+static void pca100_ac97_warm_reset(struct snd_ac97 *ac97)
+{
+	mxc_gpio_mode(GPIO_PORTC | 20 | GPIO_GPIO | GPIO_OUT);
+	gpio_set_value(GPIO_PORTC + 20, 1);
+	udelay(2);
+	gpio_set_value(GPIO_PORTC + 20, 0);
+	mxc_gpio_mode(PC20_PF_SSI1_FS);
+	msleep(2);
+}
+
+static void pca100_ac97_cold_reset(struct snd_ac97 *ac97)
+{
+	mxc_gpio_mode(GPIO_PORTC | 20 | GPIO_GPIO | GPIO_OUT);  /* FS */
+	gpio_set_value(GPIO_PORTC + 20, 0);
+	mxc_gpio_mode(GPIO_PORTC | 22 | GPIO_GPIO | GPIO_OUT);  /* TX */
+	gpio_set_value(GPIO_PORTC + 22, 0);
+	mxc_gpio_mode(GPIO_PORTC | 28 | GPIO_GPIO | GPIO_OUT);  /* reset */
+	gpio_set_value(GPIO_PORTC + 28, 0);
+	udelay(10);
+	gpio_set_value(GPIO_PORTC + 28, 1);
+	mxc_gpio_mode(PC20_PF_SSI1_FS);
+	mxc_gpio_mode(PC22_PF_SSI1_TXD);
+	msleep(2);
+}
+
+static const struct imx_ssi_platform_data pca100_ssi_pdata __initconst = {
+	.ac97_reset		= pca100_ac97_cold_reset,
+	.ac97_warm_reset	= pca100_ac97_warm_reset,
+	.flags			= IMX_SSI_USE_AC97,
+};
+
+static int pca100_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
+		void *data)
+{
+	int ret;
+
+	ret = request_irq(gpio_to_irq(IMX_GPIO_NR(3, 29)), detect_irq,
+			  IRQF_TRIGGER_FALLING, "imx-mmc-detect", data);
+	if (ret)
+		printk(KERN_ERR
+			"pca100: Failed to request irq for sd/mmc detection\n");
+
+	return ret;
+}
+
+static void pca100_sdhc2_exit(struct device *dev, void *data)
+{
+	free_irq(gpio_to_irq(IMX_GPIO_NR(3, 29)), data);
+}
+
+static const struct imxmmc_platform_data sdhc_pdata __initconst = {
+	.init = pca100_sdhc2_init,
+	.exit = pca100_sdhc2_exit,
+};
+
+static int otg_phy_init(struct platform_device *pdev)
+{
+	gpio_set_value(OTG_PHY_CS_GPIO, 0);
+
+	mdelay(10);
+
+	return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
+}
+
+static struct mxc_usbh_platform_data otg_pdata __initdata = {
+	.init	= otg_phy_init,
+	.portsc	= MXC_EHCI_MODE_ULPI,
+};
+
+static int usbh2_phy_init(struct platform_device *pdev)
+{
+	gpio_set_value(USBH2_PHY_CS_GPIO, 0);
+
+	mdelay(10);
+
+	return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
+}
+
+static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
+	.init	= usbh2_phy_init,
+	.portsc	= MXC_EHCI_MODE_ULPI,
+};
+
+static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
+	.operating_mode = FSL_USB2_DR_DEVICE,
+	.phy_mode       = FSL_USB2_PHY_ULPI,
+};
+
+static bool otg_mode_host __initdata;
+
+static int __init pca100_otg_mode(char *options)
+{
+	if (!strcmp(options, "host"))
+		otg_mode_host = true;
+	else if (!strcmp(options, "device"))
+		otg_mode_host = false;
+	else
+		pr_info("otg_mode neither \"host\" nor \"device\". "
+			"Defaulting to device\n");
+	return 1;
+}
+__setup("otg_mode=", pca100_otg_mode);
+
+/* framebuffer info */
+static struct imx_fb_videomode pca100_fb_modes[] = {
+	{
+		.mode = {
+			.name		= "EMERGING-ETV570G0DHU",
+			.refresh	= 60,
+			.xres		= 640,
+			.yres		= 480,
+			.pixclock	= 39722, /* in ps (25.175 MHz) */
+			.hsync_len	= 30,
+			.left_margin	= 114,
+			.right_margin	= 16,
+			.vsync_len	= 3,
+			.upper_margin	= 32,
+			.lower_margin	= 0,
+		},
+		/*
+		 * TFT
+		 * Pixel pol active high
+		 * HSYNC active low
+		 * VSYNC active low
+		 * use HSYNC for ACD count
+		 * line clock disable while idle
+		 * always enable line clock even if no data
+		 */
+		.pcr = 0xf0c08080,
+		.bpp = 16,
+	},
+};
+
+static const struct imx_fb_platform_data pca100_fb_data __initconst = {
+	.mode = pca100_fb_modes,
+	.num_modes = ARRAY_SIZE(pca100_fb_modes),
+
+	.pwmr		= 0x00A903FF,
+	.lscr1		= 0x00120300,
+	.dmacr		= 0x00020010,
+};
+
+static void __init pca100_init(void)
+{
+	int ret;
+
+	imx27_soc_init();
+
+	ret = mxc_gpio_setup_multiple_pins(pca100_pins,
+			ARRAY_SIZE(pca100_pins), "PCA100");
+	if (ret)
+		printk(KERN_ERR "pca100: Failed to setup pins (%d)\n", ret);
+
+	imx27_add_imx_ssi(0, &pca100_ssi_pdata);
+
+	imx27_add_imx_uart0(&uart_pdata);
+
+	imx27_add_mxc_mmc(1, &sdhc_pdata);
+
+	imx27_add_mxc_nand(&pca100_nand_board_info);
+
+	/* only the i2c master 1 is used on this CPU card */
+	i2c_register_board_info(1, pca100_i2c_devices,
+				ARRAY_SIZE(pca100_i2c_devices));
+
+	imx27_add_imx_i2c(1, &pca100_i2c1_data);
+
+	mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_IN);
+	mxc_gpio_mode(GPIO_PORTD | 27 | GPIO_GPIO | GPIO_IN);
+	spi_register_board_info(pca100_spi_board_info,
+				ARRAY_SIZE(pca100_spi_board_info));
+	imx27_add_spi_imx0(&pca100_spi0_data);
+
+	gpio_request(OTG_PHY_CS_GPIO, "usb-otg-cs");
+	gpio_direction_output(OTG_PHY_CS_GPIO, 1);
+	gpio_request(USBH2_PHY_CS_GPIO, "usb-host2-cs");
+	gpio_direction_output(USBH2_PHY_CS_GPIO, 1);
+
+	if (otg_mode_host) {
+		otg_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
+				ULPI_OTG_DRVVBUS_EXT);
+
+		if (otg_pdata.otg)
+			imx27_add_mxc_ehci_otg(&otg_pdata);
+	} else {
+		gpio_set_value(OTG_PHY_CS_GPIO, 0);
+		imx27_add_fsl_usb2_udc(&otg_device_pdata);
+	}
+
+	usbh2_pdata.otg = imx_otg_ulpi_create(
+			ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
+
+	if (usbh2_pdata.otg)
+		imx27_add_mxc_ehci_hs(2, &usbh2_pdata);
+
+	imx27_add_imx_fb(&pca100_fb_data);
+
+	imx27_add_fec(NULL);
+	imx27_add_imx2_wdt();
+	imx27_add_mxc_w1();
+}
+
+static void __init pca100_timer_init(void)
+{
+	mx27_clocks_init(26000000);
+}
+
+MACHINE_START(PCA100, "phyCARD-i.MX27")
+	.atag_offset = 0x100,
+	.map_io = mx27_map_io,
+	.init_early = imx27_init_early,
+	.init_irq = mx27_init_irq,
+	.init_machine = pca100_init,
+	.init_time	= pca100_timer_init,
+	.restart	= mxc_restart,
+MACHINE_END