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, 246 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-imx/mx31moboard-devboard.c b/kernel/arch/arm/mach-imx/mx31moboard-devboard.c
new file mode 100644
index 000000000..1e91a0918
--- /dev/null
+++ b/kernel/arch/arm/mach-imx/mx31moboard-devboard.c
@@ -0,0 +1,246 @@
+/*
+ * Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
+ *
+ * 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.
+ */
+
+#include <linux/gpio.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <linux/usb/otg.h>
+
+#include "common.h"
+#include "devices-imx31.h"
+#include "ehci.h"
+#include "hardware.h"
+#include "iomux-mx3.h"
+#include "ulpi.h"
+
+static unsigned int devboard_pins[] = {
+	/* UART1 */
+	MX31_PIN_CTS2__CTS2, MX31_PIN_RTS2__RTS2,
+	MX31_PIN_TXD2__TXD2, MX31_PIN_RXD2__RXD2,
+	/* SDHC2 */
+	MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2,
+	MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0,
+	MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD,
+	MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29,
+	/* USB H1 */
+	MX31_PIN_CSPI1_MISO__USBH1_RXDP, MX31_PIN_CSPI1_MOSI__USBH1_RXDM,
+	MX31_PIN_CSPI1_SS0__USBH1_TXDM, MX31_PIN_CSPI1_SS1__USBH1_TXDP,
+	MX31_PIN_CSPI1_SS2__USBH1_RCV, MX31_PIN_CSPI1_SCLK__USBH1_OEB,
+	MX31_PIN_CSPI1_SPI_RDY__USBH1_FS, MX31_PIN_SFS6__USBH1_SUSPEND,
+	MX31_PIN_NFRE_B__GPIO1_11, MX31_PIN_NFALE__GPIO1_12,
+	/* SEL */
+	MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
+	MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
+};
+
+static const struct imxuart_platform_data uart_pdata __initconst = {
+	.flags = IMXUART_HAVE_RTSCTS,
+};
+
+#define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
+#define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW)
+
+static int devboard_sdhc2_get_ro(struct device *dev)
+{
+	return !gpio_get_value(SDHC2_WP);
+}
+
+static int devboard_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
+		void *data)
+{
+	int ret;
+
+	ret = gpio_request(SDHC2_CD, "sdhc-detect");
+	if (ret)
+		return ret;
+
+	gpio_direction_input(SDHC2_CD);
+
+	ret = gpio_request(SDHC2_WP, "sdhc-wp");
+	if (ret)
+		goto err_gpio_free;
+	gpio_direction_input(SDHC2_WP);
+
+	ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq,
+		IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+		"sdhc2-card-detect", data);
+	if (ret)
+		goto err_gpio_free_2;
+
+	return 0;
+
+err_gpio_free_2:
+	gpio_free(SDHC2_WP);
+err_gpio_free:
+	gpio_free(SDHC2_CD);
+
+	return ret;
+}
+
+static void devboard_sdhc2_exit(struct device *dev, void *data)
+{
+	free_irq(gpio_to_irq(SDHC2_CD), data);
+	gpio_free(SDHC2_WP);
+	gpio_free(SDHC2_CD);
+}
+
+static const struct imxmmc_platform_data sdhc2_pdata __initconst = {
+	.get_ro	= devboard_sdhc2_get_ro,
+	.init	= devboard_sdhc2_init,
+	.exit	= devboard_sdhc2_exit,
+};
+
+#define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
+#define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
+#define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
+#define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
+
+static void devboard_init_sel_gpios(void)
+{
+	if (!gpio_request(SEL0, "sel0")) {
+		gpio_direction_input(SEL0);
+		gpio_export(SEL0, true);
+	}
+
+	if (!gpio_request(SEL1, "sel1")) {
+		gpio_direction_input(SEL1);
+		gpio_export(SEL1, true);
+	}
+
+	if (!gpio_request(SEL2, "sel2")) {
+		gpio_direction_input(SEL2);
+		gpio_export(SEL2, true);
+	}
+
+	if (!gpio_request(SEL3, "sel3")) {
+		gpio_direction_input(SEL3);
+		gpio_export(SEL3, true);
+	}
+}
+#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
+			PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
+
+static int devboard_usbh1_hw_init(struct platform_device *pdev)
+{
+	mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true);
+
+	mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_SFS6, USB_PAD_CFG);
+
+	mdelay(10);
+
+	return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED |
+			MXC_EHCI_INTERFACE_SINGLE_UNI);
+}
+
+#define USBH1_VBUSEN_B	IOMUX_TO_GPIO(MX31_PIN_NFRE_B)
+#define USBH1_MODE	IOMUX_TO_GPIO(MX31_PIN_NFALE)
+
+static int devboard_isp1105_init(struct usb_phy *otg)
+{
+	int ret = gpio_request(USBH1_MODE, "usbh1-mode");
+	if (ret)
+		return ret;
+	/* single ended */
+	gpio_direction_output(USBH1_MODE, 0);
+
+	ret = gpio_request(USBH1_VBUSEN_B, "usbh1-vbusen");
+	if (ret) {
+		gpio_free(USBH1_MODE);
+		return ret;
+	}
+	gpio_direction_output(USBH1_VBUSEN_B, 1);
+
+	return 0;
+}
+
+
+static int devboard_isp1105_set_vbus(struct usb_otg *otg, bool on)
+{
+	if (on)
+		gpio_set_value(USBH1_VBUSEN_B, 0);
+	else
+		gpio_set_value(USBH1_VBUSEN_B, 1);
+
+	return 0;
+}
+
+static struct mxc_usbh_platform_data usbh1_pdata __initdata = {
+	.init	= devboard_usbh1_hw_init,
+	.portsc	= MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL,
+};
+
+static int __init devboard_usbh1_init(void)
+{
+	struct usb_phy *phy;
+	struct platform_device *pdev;
+
+	phy = kzalloc(sizeof(*phy), GFP_KERNEL);
+	if (!phy)
+		return -ENOMEM;
+
+	phy->otg = kzalloc(sizeof(struct usb_otg), GFP_KERNEL);
+	if (!phy->otg) {
+		kfree(phy);
+		return -ENOMEM;
+	}
+
+	phy->label	= "ISP1105";
+	phy->init	= devboard_isp1105_init;
+	phy->otg->set_vbus	= devboard_isp1105_set_vbus;
+
+	usbh1_pdata.otg = phy;
+
+	pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata);
+
+	return PTR_ERR_OR_ZERO(pdev);
+}
+
+
+static const struct fsl_usb2_platform_data usb_pdata __initconst = {
+	.operating_mode	= FSL_USB2_DR_DEVICE,
+	.phy_mode	= FSL_USB2_PHY_ULPI,
+};
+
+/*
+ * system init for baseboard usage. Will be called by mx31moboard init.
+ */
+void __init mx31moboard_devboard_init(void)
+{
+	printk(KERN_INFO "Initializing mx31devboard peripherals\n");
+
+	mxc_iomux_setup_multiple_pins(devboard_pins, ARRAY_SIZE(devboard_pins),
+		"devboard");
+
+	imx31_add_imx_uart1(&uart_pdata);
+
+	imx31_add_mxc_mmc(1, &sdhc2_pdata);
+
+	devboard_init_sel_gpios();
+
+	imx31_add_fsl_usb2_udc(&usb_pdata);
+
+	devboard_usbh1_init();
+}