arch/arm/mach-imx/mach-mx31_3ds.c - kernel/msm-5.4 - Gitiles

 /*
  *  Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
  *
  * 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/delay.h>
 #include <linux/dma-mapping.h>
 #include <linux/types.h>
 #include <linux/init.h>
 #include <linux/clk.h>
 #include <linux/irq.h>
 #include <linux/gpio.h>
 #include <linux/platform_device.h>
 #include <linux/mfd/mc13783.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/l4f00242t03.h>
 #include <linux/regulator/machine.h>
 #include <linux/usb/otg.h>
 #include <linux/usb/ulpi.h>
 #include <linux/memblock.h>

 #include <media/soc_camera.h>

 #include <mach/hardware.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/time.h>
 #include <asm/memory.h>
 #include <asm/mach/map.h>
 #include <asm/memblock.h>
 #include <mach/ulpi.h>

 #include "3ds_debugboard.h"
 #include "common.h"
 #include "devices-imx31.h"
 #include "iomux-mx3.h"

 static int mx31_3ds_pins[] = {
 	/* UART1 */
 	MX31_PIN_CTS1__CTS1,
 	MX31_PIN_RTS1__RTS1,
 	MX31_PIN_TXD1__TXD1,
 	MX31_PIN_RXD1__RXD1,
 	IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO),
 	/*SPI0*/
 	IOMUX_MODE(MX31_PIN_DSR_DCE1, IOMUX_CONFIG_ALT1),
 	IOMUX_MODE(MX31_PIN_RI_DCE1, IOMUX_CONFIG_ALT1),
 	/* SPI 1 */
 	MX31_PIN_CSPI2_SCLK__SCLK,
 	MX31_PIN_CSPI2_MOSI__MOSI,
 	MX31_PIN_CSPI2_MISO__MISO,
 	MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
 	MX31_PIN_CSPI2_SS0__SS0,
 	MX31_PIN_CSPI2_SS2__SS2, /*CS for MC13783 */
 	/* MC13783 IRQ */
 	IOMUX_MODE(MX31_PIN_GPIO1_3, IOMUX_CONFIG_GPIO),
 	/* USB OTG reset */
 	IOMUX_MODE(MX31_PIN_USB_PWR, IOMUX_CONFIG_GPIO),
 	/* USB OTG */
 	MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
 	MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
 	MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
 	MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
 	MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
 	MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
 	MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
 	MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
 	MX31_PIN_USBOTG_CLK__USBOTG_CLK,
 	MX31_PIN_USBOTG_DIR__USBOTG_DIR,
 	MX31_PIN_USBOTG_NXT__USBOTG_NXT,
 	MX31_PIN_USBOTG_STP__USBOTG_STP,
 	/*Keyboard*/
 	MX31_PIN_KEY_ROW0_KEY_ROW0,
 	MX31_PIN_KEY_ROW1_KEY_ROW1,
 	MX31_PIN_KEY_ROW2_KEY_ROW2,
 	MX31_PIN_KEY_COL0_KEY_COL0,
 	MX31_PIN_KEY_COL1_KEY_COL1,
 	MX31_PIN_KEY_COL2_KEY_COL2,
 	MX31_PIN_KEY_COL3_KEY_COL3,
 	/* USB Host 2 */
 	IOMUX_MODE(MX31_PIN_USBH2_CLK, IOMUX_CONFIG_FUNC),
 	IOMUX_MODE(MX31_PIN_USBH2_DIR, IOMUX_CONFIG_FUNC),
 	IOMUX_MODE(MX31_PIN_USBH2_NXT, IOMUX_CONFIG_FUNC),
 	IOMUX_MODE(MX31_PIN_USBH2_STP, IOMUX_CONFIG_FUNC),
 	IOMUX_MODE(MX31_PIN_USBH2_DATA0, IOMUX_CONFIG_FUNC),
 	IOMUX_MODE(MX31_PIN_USBH2_DATA1, IOMUX_CONFIG_FUNC),
 	IOMUX_MODE(MX31_PIN_PC_VS2, IOMUX_CONFIG_ALT1),
 	IOMUX_MODE(MX31_PIN_PC_BVD1, IOMUX_CONFIG_ALT1),
 	IOMUX_MODE(MX31_PIN_PC_BVD2, IOMUX_CONFIG_ALT1),
 	IOMUX_MODE(MX31_PIN_PC_RST, IOMUX_CONFIG_ALT1),
 	IOMUX_MODE(MX31_PIN_IOIS16, IOMUX_CONFIG_ALT1),
 	IOMUX_MODE(MX31_PIN_PC_RW_B, IOMUX_CONFIG_ALT1),
 	/* USB Host2 reset */
 	IOMUX_MODE(MX31_PIN_USB_BYP, IOMUX_CONFIG_GPIO),
 	/* I2C1 */
 	MX31_PIN_I2C_CLK__I2C1_SCL,
 	MX31_PIN_I2C_DAT__I2C1_SDA,
 	/* SDHC1 */
 	MX31_PIN_SD1_DATA3__SD1_DATA3,
 	MX31_PIN_SD1_DATA2__SD1_DATA2,
 	MX31_PIN_SD1_DATA1__SD1_DATA1,
 	MX31_PIN_SD1_DATA0__SD1_DATA0,
 	MX31_PIN_SD1_CLK__SD1_CLK,
 	MX31_PIN_SD1_CMD__SD1_CMD,
 	MX31_PIN_GPIO3_1__GPIO3_1, /* Card detect */
 	MX31_PIN_GPIO3_0__GPIO3_0, /* OE */
 	/* Framebuffer */
 	MX31_PIN_LD0__LD0,
 	MX31_PIN_LD1__LD1,
 	MX31_PIN_LD2__LD2,
 	MX31_PIN_LD3__LD3,
 	MX31_PIN_LD4__LD4,
 	MX31_PIN_LD5__LD5,
 	MX31_PIN_LD6__LD6,
 	MX31_PIN_LD7__LD7,
 	MX31_PIN_LD8__LD8,
 	MX31_PIN_LD9__LD9,
 	MX31_PIN_LD10__LD10,
 	MX31_PIN_LD11__LD11,
 	MX31_PIN_LD12__LD12,
 	MX31_PIN_LD13__LD13,
 	MX31_PIN_LD14__LD14,
 	MX31_PIN_LD15__LD15,
 	MX31_PIN_LD16__LD16,
 	MX31_PIN_LD17__LD17,
 	MX31_PIN_VSYNC3__VSYNC3,
 	MX31_PIN_HSYNC__HSYNC,
 	MX31_PIN_FPSHIFT__FPSHIFT,
 	MX31_PIN_CONTRAST__CONTRAST,
 	/* CSI */
 	MX31_PIN_CSI_D6__CSI_D6,
 	MX31_PIN_CSI_D7__CSI_D7,
 	MX31_PIN_CSI_D8__CSI_D8,
 	MX31_PIN_CSI_D9__CSI_D9,
 	MX31_PIN_CSI_D10__CSI_D10,
 	MX31_PIN_CSI_D11__CSI_D11,
 	MX31_PIN_CSI_D12__CSI_D12,
 	MX31_PIN_CSI_D13__CSI_D13,
 	MX31_PIN_CSI_D14__CSI_D14,
 	MX31_PIN_CSI_D15__CSI_D15,
 	MX31_PIN_CSI_HSYNC__CSI_HSYNC,
 	MX31_PIN_CSI_MCLK__CSI_MCLK,
 	MX31_PIN_CSI_PIXCLK__CSI_PIXCLK,
 	MX31_PIN_CSI_VSYNC__CSI_VSYNC,
 	MX31_PIN_CSI_D5__GPIO3_5, /* CMOS PWDN */
 	IOMUX_MODE(MX31_PIN_RI_DTE1, IOMUX_CONFIG_GPIO), /* CMOS reset */
 	/* SSI */
 	MX31_PIN_STXD4__STXD4,
 	MX31_PIN_SRXD4__SRXD4,
 	MX31_PIN_SCK4__SCK4,
 	MX31_PIN_SFS4__SFS4,
 };

 /*
  * Camera support
  */
 static phys_addr_t mx3_camera_base __initdata;
 #define MX31_3DS_CAMERA_BUF_SIZE SZ_8M

 #define MX31_3DS_GPIO_CAMERA_PW IOMUX_TO_GPIO(MX31_PIN_CSI_D5)
 #define MX31_3DS_GPIO_CAMERA_RST IOMUX_TO_GPIO(MX31_PIN_RI_DTE1)

 static struct gpio mx31_3ds_camera_gpios[] = {
 	{ MX31_3DS_GPIO_CAMERA_PW, GPIOF_OUT_INIT_HIGH, "camera-power" },
 	{ MX31_3DS_GPIO_CAMERA_RST, GPIOF_OUT_INIT_HIGH, "camera-reset" },
 };

 static const struct mx3_camera_pdata mx31_3ds_camera_pdata __initconst = {
 	.flags = MX3_CAMERA_DATAWIDTH_10,
 	.mclk_10khz = 2600,
 };

 static int __init mx31_3ds_init_camera(void)
 {
 	int dma, ret = -ENOMEM;
 	struct platform_device *pdev =
 		imx31_alloc_mx3_camera(&mx31_3ds_camera_pdata);

 	if (IS_ERR(pdev))
 		return PTR_ERR(pdev);

 	if (!mx3_camera_base)
 		goto err;

 	dma = dma_declare_coherent_memory(&pdev->dev,
 					mx3_camera_base, mx3_camera_base,
 					MX31_3DS_CAMERA_BUF_SIZE,
 					DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE);

 	if (!(dma & DMA_MEMORY_MAP))
 		goto err;

 	ret = platform_device_add(pdev);
 	if (ret)
 err:
 		platform_device_put(pdev);

 	return ret;
 }

 static int mx31_3ds_camera_power(struct device *dev, int on)
 {
 	/* enable or disable the camera */
 	pr_debug("%s: %s the camera\n", __func__, on ? "ENABLE" : "DISABLE");
 	gpio_set_value(MX31_3DS_GPIO_CAMERA_PW, on ? 0 : 1);

 	if (!on)
 		goto out;

 	/* If enabled, give a reset impulse */
 	gpio_set_value(MX31_3DS_GPIO_CAMERA_RST, 0);
 	msleep(20);
 	gpio_set_value(MX31_3DS_GPIO_CAMERA_RST, 1);
 	msleep(100);

 out:
 	return 0;
 }

 static struct i2c_board_info mx31_3ds_i2c_camera = {
 	I2C_BOARD_INFO("ov2640", 0x30),
 };

 static struct regulator_bulk_data mx31_3ds_camera_regs[] = {
 	{ .supply = "cmos_vcore" },
 	{ .supply = "cmos_2v8" },
 };

 static struct soc_camera_link iclink_ov2640 = {
 	.bus_id		= 0,
 	.board_info	= &mx31_3ds_i2c_camera,
 	.i2c_adapter_id	= 0,
 	.power		= mx31_3ds_camera_power,
 	.regulators	= mx31_3ds_camera_regs,
 	.num_regulators	= ARRAY_SIZE(mx31_3ds_camera_regs),
 };

 static struct platform_device mx31_3ds_ov2640 = {
 	.name	= "soc-camera-pdrv",
 	.id	= 0,
 	.dev	= {
 		.platform_data = &iclink_ov2640,
 	},
 };

 /*
  * FB support
  */
 static const struct fb_videomode fb_modedb[] = {
 	{	/* 480x640 @ 60 Hz */
 		.name		= "Epson-VGA",
 		.refresh	= 60,
 		.xres		= 480,
 		.yres		= 640,
 		.pixclock	= 41701,
 		.left_margin	= 20,
 		.right_margin	= 41,
 		.upper_margin	= 10,
 		.lower_margin	= 5,
 		.hsync_len	= 20,
 		.vsync_len	= 10,
 		.sync		= FB_SYNC_OE_ACT_HIGH | FB_SYNC_CLK_INVERT,
 		.vmode		= FB_VMODE_NONINTERLACED,
 		.flag		= 0,
 	},
 };

 static struct mx3fb_platform_data mx3fb_pdata __initdata = {
 	.name		= "Epson-VGA",
 	.mode		= fb_modedb,
 	.num_modes	= ARRAY_SIZE(fb_modedb),
 };

 /* LCD */
 static struct l4f00242t03_pdata mx31_3ds_l4f00242t03_pdata = {
 	.reset_gpio		= IOMUX_TO_GPIO(MX31_PIN_LCS1),
 	.data_enable_gpio	= IOMUX_TO_GPIO(MX31_PIN_SER_RS),
 };

 /*
  * Support for SD card slot in personality board
  */
 #define MX31_3DS_GPIO_SDHC1_CD IOMUX_TO_GPIO(MX31_PIN_GPIO3_1)
 #define MX31_3DS_GPIO_SDHC1_BE IOMUX_TO_GPIO(MX31_PIN_GPIO3_0)

 static struct gpio mx31_3ds_sdhc1_gpios[] = {
 	{ MX31_3DS_GPIO_SDHC1_CD, GPIOF_IN, "sdhc1-card-detect" },
 	{ MX31_3DS_GPIO_SDHC1_BE, GPIOF_OUT_INIT_LOW, "sdhc1-bus-en" },
 };

 static int mx31_3ds_sdhc1_init(struct device *dev,
 			       irq_handler_t detect_irq,
 			       void *data)
 {
 	int ret;

 	ret = gpio_request_array(mx31_3ds_sdhc1_gpios,
 				 ARRAY_SIZE(mx31_3ds_sdhc1_gpios));
 	if (ret) {
 		pr_warning("Unable to request the SD/MMC GPIOs.\n");
 		return ret;
 	}

 	ret = request_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO3_1)),
 			  detect_irq, IRQF_DISABLED |
 			  IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
 			  "sdhc1-detect", data);
 	if (ret) {
 		pr_warning("Unable to request the SD/MMC card-detect IRQ.\n");
 		goto gpio_free;
 	}

 	return 0;

 gpio_free:
 	gpio_free_array(mx31_3ds_sdhc1_gpios,
 			ARRAY_SIZE(mx31_3ds_sdhc1_gpios));
 	return ret;
 }

 static void mx31_3ds_sdhc1_exit(struct device *dev, void *data)
 {
 	free_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO3_1)), data);
 	gpio_free_array(mx31_3ds_sdhc1_gpios,
 			 ARRAY_SIZE(mx31_3ds_sdhc1_gpios));
 }

 static void mx31_3ds_sdhc1_setpower(struct device *dev, unsigned int vdd)
 {
 	/*
 	 * While the voltage stuff is done by the driver, activate the
 	 * Buffer Enable Pin only if there is a card in slot to fix the card
 	 * voltage issue caused by bi-directional chip TXB0108 on 3Stack.
 	 * Done here because at this stage we have for sure a debounced value
 	 * of the presence of the card, showed by the value of vdd.
 	 * 7 == ilog2(MMC_VDD_165_195)
 	 */
 	if (vdd > 7)
 		gpio_set_value(MX31_3DS_GPIO_SDHC1_BE, 1);
 	else
 		gpio_set_value(MX31_3DS_GPIO_SDHC1_BE, 0);
 }

 static struct imxmmc_platform_data sdhc1_pdata = {
 	.init		= mx31_3ds_sdhc1_init,
 	.exit		= mx31_3ds_sdhc1_exit,
 	.setpower	= mx31_3ds_sdhc1_setpower,
 };

 /*
  * Matrix keyboard
  */

 static const uint32_t mx31_3ds_keymap[] = {
 	KEY(0, 0, KEY_UP),
 	KEY(0, 1, KEY_DOWN),
 	KEY(1, 0, KEY_RIGHT),
 	KEY(1, 1, KEY_LEFT),
 	KEY(1, 2, KEY_ENTER),
 	KEY(2, 0, KEY_F6),
 	KEY(2, 1, KEY_F8),
 	KEY(2, 2, KEY_F9),
 	KEY(2, 3, KEY_F10),
 };

 static const struct matrix_keymap_data mx31_3ds_keymap_data __initconst = {
 	.keymap		= mx31_3ds_keymap,
 	.keymap_size	= ARRAY_SIZE(mx31_3ds_keymap),
 };

 /* Regulators */
 static struct regulator_init_data pwgtx_init = {
 	.constraints = {
 		.boot_on	= 1,
 		.always_on	= 1,
 	},
 };

 static struct regulator_init_data gpo_init = {
 	.constraints = {
 		.boot_on = 1,
 		.always_on = 1,
 	}
 };

 static struct regulator_consumer_supply vmmc2_consumers[] = {
 	REGULATOR_SUPPLY("vmmc", "mxc-mmc.0"),
 };

 static struct regulator_init_data vmmc2_init = {
 	.constraints = {
 		.min_uV = 3000000,
 		.max_uV = 3000000,
 		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 				  REGULATOR_CHANGE_STATUS,
 	},
 	.num_consumer_supplies = ARRAY_SIZE(vmmc2_consumers),
 	.consumer_supplies = vmmc2_consumers,
 };

 static struct regulator_consumer_supply vmmc1_consumers[] = {
 	REGULATOR_SUPPLY("vcore", "spi0.0"),
 	REGULATOR_SUPPLY("cmos_2v8", "soc-camera-pdrv.0"),
 };

 static struct regulator_init_data vmmc1_init = {
 	.constraints = {
 		.min_uV = 2800000,
 		.max_uV = 2800000,
 		.apply_uV = 1,
 		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 				  REGULATOR_CHANGE_STATUS,
 	},
 	.num_consumer_supplies = ARRAY_SIZE(vmmc1_consumers),
 	.consumer_supplies = vmmc1_consumers,
 };

 static struct regulator_consumer_supply vgen_consumers[] = {
 	REGULATOR_SUPPLY("vdd", "spi0.0"),
 };

 static struct regulator_init_data vgen_init = {
 	.constraints = {
 		.min_uV = 1800000,
 		.max_uV = 1800000,
 		.apply_uV = 1,
 		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 				  REGULATOR_CHANGE_STATUS,
 	},
 	.num_consumer_supplies = ARRAY_SIZE(vgen_consumers),
 	.consumer_supplies = vgen_consumers,
 };

 static struct regulator_consumer_supply vvib_consumers[] = {
 	REGULATOR_SUPPLY("cmos_vcore", "soc-camera-pdrv.0"),
 };

 static struct regulator_init_data vvib_init = {
 	.constraints = {
 		.min_uV = 1300000,
 		.max_uV = 1300000,
 		.apply_uV = 1,
 		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 				  REGULATOR_CHANGE_STATUS,
 	},
 	.num_consumer_supplies = ARRAY_SIZE(vvib_consumers),
 	.consumer_supplies = vvib_consumers,
 };

 static struct mc13xxx_regulator_init_data mx31_3ds_regulators[] = {
 	{
 		.id = MC13783_REG_PWGT1SPI, /* Power Gate for ARM core. */
 		.init_data = &pwgtx_init,
 	}, {
 		.id = MC13783_REG_PWGT2SPI, /* Power Gate for L2 Cache. */
 		.init_data = &pwgtx_init,
 	}, {

 		.id = MC13783_REG_GPO1, /* Turn on 1.8V */
 		.init_data = &gpo_init,
 	}, {
 		.id = MC13783_REG_GPO3, /* Turn on 3.3V */
 		.init_data = &gpo_init,
 	}, {
 		.id = MC13783_REG_VMMC2, /* Power MMC/SD, WiFi/Bluetooth. */
 		.init_data = &vmmc2_init,
 	}, {
 		.id = MC13783_REG_VMMC1, /* Power LCD, CMOS, FM, GPS, Accel. */
 		.init_data = &vmmc1_init,
 	}, {
 		.id = MC13783_REG_VGEN,  /* Power LCD */
 		.init_data = &vgen_init,
 	}, {
 		.id = MC13783_REG_VVIB,  /* Power CMOS */
 		.init_data = &vvib_init,
 	},
 };

 /* MC13783 */
 static struct mc13xxx_codec_platform_data mx31_3ds_codec = {
 	.dac_ssi_port = MC13783_SSI1_PORT,
 	.adc_ssi_port = MC13783_SSI1_PORT,
 };

 static struct mc13xxx_platform_data mc13783_pdata = {
 	.regulators = {
 		.regulators = mx31_3ds_regulators,
 		.num_regulators = ARRAY_SIZE(mx31_3ds_regulators),
 	},
 	.codec = &mx31_3ds_codec,
 	.flags  = MC13XXX_USE_TOUCHSCREEN | MC13XXX_USE_RTC | MC13XXX_USE_CODEC,

 };

 static struct imx_ssi_platform_data mx31_3ds_ssi_pdata = {
 	.flags = IMX_SSI_DMA | IMX_SSI_NET,
 };

 /* SPI */
 static int spi0_internal_chipselect[] = {
 	MXC_SPI_CS(2),
 };

 static const struct spi_imx_master spi0_pdata __initconst = {
 	.chipselect	= spi0_internal_chipselect,
 	.num_chipselect	= ARRAY_SIZE(spi0_internal_chipselect),
 };

 static int spi1_internal_chipselect[] = {
 	MXC_SPI_CS(0),
 	MXC_SPI_CS(2),
 };

 static const struct spi_imx_master spi1_pdata __initconst = {
 	.chipselect	= spi1_internal_chipselect,
 	.num_chipselect	= ARRAY_SIZE(spi1_internal_chipselect),
 };

 static struct spi_board_info mx31_3ds_spi_devs[] __initdata = {
 	{
 		.modalias	= "mc13783",
 		.max_speed_hz	= 1000000,
 		.bus_num	= 1,
 		.chip_select	= 1, /* SS2 */
 		.platform_data	= &mc13783_pdata,
 		/* irq number is run-time assigned */
 		.mode = SPI_CS_HIGH,
 	}, {
 		.modalias	= "l4f00242t03",
 		.max_speed_hz	= 5000000,
 		.bus_num	= 0,
 		.chip_select	= 0, /* SS2 */
 		.platform_data	= &mx31_3ds_l4f00242t03_pdata,
 	},
 };

 /*
  * NAND Flash
  */
 static const struct mxc_nand_platform_data
 mx31_3ds_nand_board_info __initconst = {
 	.width		= 1,
 	.hw_ecc		= 1,
 #ifdef CONFIG_MACH_MX31_3DS_MXC_NAND_USE_BBT
 	.flash_bbt	= 1,
 #endif
 };

 /*
  * USB OTG
  */

 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 		     PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)

 #define USBOTG_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_PWR)
 #define USBH2_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_BYP)

 static int mx31_3ds_usbotg_init(void)
 {
 	int err;

 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);

 	err = gpio_request(USBOTG_RST_B, "otgusb-reset");
 	if (err) {
 		pr_err("Failed to request the USB OTG reset gpio\n");
 		return err;
 	}

 	err = gpio_direction_output(USBOTG_RST_B, 0);
 	if (err) {
 		pr_err("Failed to drive the USB OTG reset gpio\n");
 		goto usbotg_free_reset;
 	}

 	mdelay(1);
 	gpio_set_value(USBOTG_RST_B, 1);
 	return 0;

 usbotg_free_reset:
 	gpio_free(USBOTG_RST_B);
 	return err;
 }

 static int mx31_3ds_otg_init(struct platform_device *pdev)
 {
 	return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
 }

 static int mx31_3ds_host2_init(struct platform_device *pdev)
 {
 	int err;

 	mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_PC_VS2, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_PC_BVD1, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_PC_BVD2, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_PC_RST, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_IOIS16, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_PC_RW_B, USB_PAD_CFG);

 	err = gpio_request(USBH2_RST_B, "usbh2-reset");
 	if (err) {
 		pr_err("Failed to request the USB Host 2 reset gpio\n");
 		return err;
 	}

 	err = gpio_direction_output(USBH2_RST_B, 0);
 	if (err) {
 		pr_err("Failed to drive the USB Host 2 reset gpio\n");
 		goto usbotg_free_reset;
 	}

 	mdelay(1);
 	gpio_set_value(USBH2_RST_B, 1);

 	mdelay(10);

 	return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);

 usbotg_free_reset:
 	gpio_free(USBH2_RST_B);
 	return err;
 }

 static struct mxc_usbh_platform_data otg_pdata __initdata = {
 	.init	= mx31_3ds_otg_init,
 	.portsc	= MXC_EHCI_MODE_ULPI,
 };

 static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
 	.init = mx31_3ds_host2_init,
 	.portsc	= MXC_EHCI_MODE_ULPI,
 };

 static const struct fsl_usb2_platform_data usbotg_pdata __initconst = {
 	.operating_mode = FSL_USB2_DR_DEVICE,
 	.phy_mode	= FSL_USB2_PHY_ULPI,
 };

 static bool otg_mode_host __initdata;

 static int __init mx31_3ds_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=", mx31_3ds_otg_mode);

 static const struct imxuart_platform_data uart_pdata __initconst = {
 	.flags = IMXUART_HAVE_RTSCTS,
 };

 static const struct imxi2c_platform_data mx31_3ds_i2c0_data __initconst = {
 	.bitrate = 100000,
 };

 static struct platform_device *devices[] __initdata = {
 	&mx31_3ds_ov2640,
 };

 static void __init mx31_3ds_init(void)
 {
 	int ret;

 	imx31_soc_init();

 	/* Configure SPI1 IOMUX */
 	mxc_iomux_set_gpr(MUX_PGP_CSPI_BB, true);

 	mxc_iomux_setup_multiple_pins(mx31_3ds_pins, ARRAY_SIZE(mx31_3ds_pins),
 				      "mx31_3ds");

 	imx31_add_imx_uart0(&uart_pdata);
 	imx31_add_mxc_nand(&mx31_3ds_nand_board_info);

 	imx31_add_spi_imx1(&spi1_pdata);
 	mx31_3ds_spi_devs[0].irq = gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
 	spi_register_board_info(mx31_3ds_spi_devs,
 						ARRAY_SIZE(mx31_3ds_spi_devs));

 	platform_add_devices(devices, ARRAY_SIZE(devices));

 	imx31_add_imx_keypad(&mx31_3ds_keymap_data);

 	mx31_3ds_usbotg_init();
 	if (otg_mode_host) {
 		otg_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
 				ULPI_OTG_DRVVBUS_EXT);
 		if (otg_pdata.otg)
 			imx31_add_mxc_ehci_otg(&otg_pdata);
 	}
 	usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
 			ULPI_OTG_DRVVBUS_EXT);
 	if (usbh2_pdata.otg)
 		imx31_add_mxc_ehci_hs(2, &usbh2_pdata);

 	if (!otg_mode_host)
 		imx31_add_fsl_usb2_udc(&usbotg_pdata);

 	if (mxc_expio_init(MX31_CS5_BASE_ADDR, IOMUX_TO_GPIO(MX31_PIN_GPIO1_1)))
 		printk(KERN_WARNING "Init of the debug board failed, all "
 				    "devices on the debug board are unusable.\n");
 	imx31_add_imx2_wdt();
 	imx31_add_imx_i2c0(&mx31_3ds_i2c0_data);
 	imx31_add_mxc_mmc(0, &sdhc1_pdata);

 	imx31_add_spi_imx0(&spi0_pdata);
 	imx31_add_ipu_core();
 	imx31_add_mx3_sdc_fb(&mx3fb_pdata);

 	/* CSI */
 	/* Camera power: default - off */
 	ret = gpio_request_array(mx31_3ds_camera_gpios,
 				 ARRAY_SIZE(mx31_3ds_camera_gpios));
 	if (ret) {
 		pr_err("Failed to request camera gpios");
 		iclink_ov2640.power = NULL;
 	}

 	mx31_3ds_init_camera();

 	imx31_add_imx_ssi(0, &mx31_3ds_ssi_pdata);

 	imx_add_platform_device("imx_mc13783", 0, NULL, 0, NULL, 0);
 }

 static void __init mx31_3ds_timer_init(void)
 {
 	mx31_clocks_init(26000000);
 }

 static struct sys_timer mx31_3ds_timer = {
 	.init	= mx31_3ds_timer_init,
 };

 static void __init mx31_3ds_reserve(void)
 {
 	/* reserve MX31_3DS_CAMERA_BUF_SIZE bytes for mx3-camera */
 	mx3_camera_base = arm_memblock_steal(MX31_3DS_CAMERA_BUF_SIZE,
 					 MX31_3DS_CAMERA_BUF_SIZE);
 }

 MACHINE_START(MX31_3DS, "Freescale MX31PDK (3DS)")
 	/* Maintainer: Freescale Semiconductor, Inc. */
 	.atag_offset = 0x100,
 	.map_io = mx31_map_io,
 	.init_early = imx31_init_early,
 	.init_irq = mx31_init_irq,
 	.handle_irq = imx31_handle_irq,
 	.timer = &mx31_3ds_timer,
 	.init_machine = mx31_3ds_init,
 	.reserve = mx31_3ds_reserve,
 	.restart	= mxc_restart,
 MACHINE_END
	/*
	* Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
	*
	* 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/delay.h>
	#include <linux/dma-mapping.h>
	#include <linux/types.h>
	#include <linux/init.h>
	#include <linux/clk.h>
	#include <linux/irq.h>
	#include <linux/gpio.h>
	#include <linux/platform_device.h>
	#include <linux/mfd/mc13783.h>
	#include <linux/spi/spi.h>
	#include <linux/spi/l4f00242t03.h>
	#include <linux/regulator/machine.h>
	#include <linux/usb/otg.h>
	#include <linux/usb/ulpi.h>
	#include <linux/memblock.h>

	#include <media/soc_camera.h>

	#include <mach/hardware.h>
	#include <asm/mach-types.h>
	#include <asm/mach/arch.h>
	#include <asm/mach/time.h>
	#include <asm/memory.h>
	#include <asm/mach/map.h>
	#include <asm/memblock.h>
	#include <mach/ulpi.h>

	#include "3ds_debugboard.h"
	#include "common.h"
	#include "devices-imx31.h"
	#include "iomux-mx3.h"

	static int mx31_3ds_pins[] = {
	/* UART1 */
	MX31_PIN_CTS1__CTS1,
	MX31_PIN_RTS1__RTS1,
	MX31_PIN_TXD1__TXD1,
	MX31_PIN_RXD1__RXD1,
	IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO),
	/SPI0/
	IOMUX_MODE(MX31_PIN_DSR_DCE1, IOMUX_CONFIG_ALT1),
	IOMUX_MODE(MX31_PIN_RI_DCE1, IOMUX_CONFIG_ALT1),
	/* SPI 1 */
	MX31_PIN_CSPI2_SCLK__SCLK,
	MX31_PIN_CSPI2_MOSI__MOSI,
	MX31_PIN_CSPI2_MISO__MISO,
	MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
	MX31_PIN_CSPI2_SS0__SS0,
	MX31_PIN_CSPI2_SS2__SS2, /CS for MC13783 /
	/* MC13783 IRQ */
	IOMUX_MODE(MX31_PIN_GPIO1_3, IOMUX_CONFIG_GPIO),
	/* USB OTG reset */
	IOMUX_MODE(MX31_PIN_USB_PWR, IOMUX_CONFIG_GPIO),
	/* USB OTG */
	MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
	MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
	MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
	MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
	MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
	MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
	MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
	MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
	MX31_PIN_USBOTG_CLK__USBOTG_CLK,
	MX31_PIN_USBOTG_DIR__USBOTG_DIR,
	MX31_PIN_USBOTG_NXT__USBOTG_NXT,
	MX31_PIN_USBOTG_STP__USBOTG_STP,
	/Keyboard/
	MX31_PIN_KEY_ROW0_KEY_ROW0,
	MX31_PIN_KEY_ROW1_KEY_ROW1,
	MX31_PIN_KEY_ROW2_KEY_ROW2,
	MX31_PIN_KEY_COL0_KEY_COL0,
	MX31_PIN_KEY_COL1_KEY_COL1,
	MX31_PIN_KEY_COL2_KEY_COL2,
	MX31_PIN_KEY_COL3_KEY_COL3,
	/* USB Host 2 */
	IOMUX_MODE(MX31_PIN_USBH2_CLK, IOMUX_CONFIG_FUNC),
	IOMUX_MODE(MX31_PIN_USBH2_DIR, IOMUX_CONFIG_FUNC),
	IOMUX_MODE(MX31_PIN_USBH2_NXT, IOMUX_CONFIG_FUNC),
	IOMUX_MODE(MX31_PIN_USBH2_STP, IOMUX_CONFIG_FUNC),
	IOMUX_MODE(MX31_PIN_USBH2_DATA0, IOMUX_CONFIG_FUNC),
	IOMUX_MODE(MX31_PIN_USBH2_DATA1, IOMUX_CONFIG_FUNC),
	IOMUX_MODE(MX31_PIN_PC_VS2, IOMUX_CONFIG_ALT1),
	IOMUX_MODE(MX31_PIN_PC_BVD1, IOMUX_CONFIG_ALT1),
	IOMUX_MODE(MX31_PIN_PC_BVD2, IOMUX_CONFIG_ALT1),
	IOMUX_MODE(MX31_PIN_PC_RST, IOMUX_CONFIG_ALT1),
	IOMUX_MODE(MX31_PIN_IOIS16, IOMUX_CONFIG_ALT1),
	IOMUX_MODE(MX31_PIN_PC_RW_B, IOMUX_CONFIG_ALT1),
	/* USB Host2 reset */
	IOMUX_MODE(MX31_PIN_USB_BYP, IOMUX_CONFIG_GPIO),
	/* I2C1 */
	MX31_PIN_I2C_CLK__I2C1_SCL,
	MX31_PIN_I2C_DAT__I2C1_SDA,
	/* SDHC1 */
	MX31_PIN_SD1_DATA3__SD1_DATA3,
	MX31_PIN_SD1_DATA2__SD1_DATA2,
	MX31_PIN_SD1_DATA1__SD1_DATA1,
	MX31_PIN_SD1_DATA0__SD1_DATA0,
	MX31_PIN_SD1_CLK__SD1_CLK,
	MX31_PIN_SD1_CMD__SD1_CMD,
	MX31_PIN_GPIO3_1__GPIO3_1, /* Card detect */
	MX31_PIN_GPIO3_0__GPIO3_0, /* OE */
	/* Framebuffer */
	MX31_PIN_LD0__LD0,
	MX31_PIN_LD1__LD1,
	MX31_PIN_LD2__LD2,
	MX31_PIN_LD3__LD3,
	MX31_PIN_LD4__LD4,
	MX31_PIN_LD5__LD5,
	MX31_PIN_LD6__LD6,
	MX31_PIN_LD7__LD7,
	MX31_PIN_LD8__LD8,
	MX31_PIN_LD9__LD9,
	MX31_PIN_LD10__LD10,
	MX31_PIN_LD11__LD11,
	MX31_PIN_LD12__LD12,
	MX31_PIN_LD13__LD13,
	MX31_PIN_LD14__LD14,
	MX31_PIN_LD15__LD15,
	MX31_PIN_LD16__LD16,
	MX31_PIN_LD17__LD17,
	MX31_PIN_VSYNC3__VSYNC3,
	MX31_PIN_HSYNC__HSYNC,
	MX31_PIN_FPSHIFT__FPSHIFT,
	MX31_PIN_CONTRAST__CONTRAST,
	/* CSI */
	MX31_PIN_CSI_D6__CSI_D6,
	MX31_PIN_CSI_D7__CSI_D7,
	MX31_PIN_CSI_D8__CSI_D8,
	MX31_PIN_CSI_D9__CSI_D9,
	MX31_PIN_CSI_D10__CSI_D10,
	MX31_PIN_CSI_D11__CSI_D11,
	MX31_PIN_CSI_D12__CSI_D12,
	MX31_PIN_CSI_D13__CSI_D13,
	MX31_PIN_CSI_D14__CSI_D14,
	MX31_PIN_CSI_D15__CSI_D15,
	MX31_PIN_CSI_HSYNC__CSI_HSYNC,
	MX31_PIN_CSI_MCLK__CSI_MCLK,
	MX31_PIN_CSI_PIXCLK__CSI_PIXCLK,
	MX31_PIN_CSI_VSYNC__CSI_VSYNC,
	MX31_PIN_CSI_D5__GPIO3_5, /* CMOS PWDN */
	IOMUX_MODE(MX31_PIN_RI_DTE1, IOMUX_CONFIG_GPIO), /* CMOS reset */
	/* SSI */
	MX31_PIN_STXD4__STXD4,
	MX31_PIN_SRXD4__SRXD4,
	MX31_PIN_SCK4__SCK4,
	MX31_PIN_SFS4__SFS4,
	};

	/*
	* Camera support
	*/
	static phys_addr_t mx3_camera_base __initdata;
	#define MX31_3DS_CAMERA_BUF_SIZE SZ_8M

	#define MX31_3DS_GPIO_CAMERA_PW IOMUX_TO_GPIO(MX31_PIN_CSI_D5)
	#define MX31_3DS_GPIO_CAMERA_RST IOMUX_TO_GPIO(MX31_PIN_RI_DTE1)

	static struct gpio mx31_3ds_camera_gpios[] = {
	{ MX31_3DS_GPIO_CAMERA_PW, GPIOF_OUT_INIT_HIGH, "camera-power" },
	{ MX31_3DS_GPIO_CAMERA_RST, GPIOF_OUT_INIT_HIGH, "camera-reset" },
	};

	static const struct mx3_camera_pdata mx31_3ds_camera_pdata __initconst = {
	.flags = MX3_CAMERA_DATAWIDTH_10,
	.mclk_10khz = 2600,
	};

	static int __init mx31_3ds_init_camera(void)
	{
	int dma, ret = -ENOMEM;
	struct platform_device *pdev =
	imx31_alloc_mx3_camera(&mx31_3ds_camera_pdata);

	if (IS_ERR(pdev))
	return PTR_ERR(pdev);

	if (!mx3_camera_base)
	goto err;

	dma = dma_declare_coherent_memory(&pdev->dev,
	mx3_camera_base, mx3_camera_base,
	MX31_3DS_CAMERA_BUF_SIZE,
	DMA_MEMORY_MAP \| DMA_MEMORY_EXCLUSIVE);

	if (!(dma & DMA_MEMORY_MAP))
	goto err;

	ret = platform_device_add(pdev);
	if (ret)
	err:
	platform_device_put(pdev);

	return ret;
	}

	static int mx31_3ds_camera_power(struct device *dev, int on)
	{
	/* enable or disable the camera */
	pr_debug("%s: %s the camera\n", __func__, on ? "ENABLE" : "DISABLE");
	gpio_set_value(MX31_3DS_GPIO_CAMERA_PW, on ? 0 : 1);

	if (!on)
	goto out;

	/* If enabled, give a reset impulse */
	gpio_set_value(MX31_3DS_GPIO_CAMERA_RST, 0);
	msleep(20);
	gpio_set_value(MX31_3DS_GPIO_CAMERA_RST, 1);
	msleep(100);

	out:
	return 0;
	}

	static struct i2c_board_info mx31_3ds_i2c_camera = {
	I2C_BOARD_INFO("ov2640", 0x30),
	};

	static struct regulator_bulk_data mx31_3ds_camera_regs[] = {
	{ .supply = "cmos_vcore" },
	{ .supply = "cmos_2v8" },
	};

	static struct soc_camera_link iclink_ov2640 = {
	.bus_id = 0,
	.board_info = &mx31_3ds_i2c_camera,
	.i2c_adapter_id = 0,
	.power = mx31_3ds_camera_power,
	.regulators = mx31_3ds_camera_regs,
	.num_regulators = ARRAY_SIZE(mx31_3ds_camera_regs),
	};

	static struct platform_device mx31_3ds_ov2640 = {
	.name = "soc-camera-pdrv",
	.id = 0,
	.dev = {
	.platform_data = &iclink_ov2640,
	},
	};

	/*
	* FB support
	*/
	static const struct fb_videomode fb_modedb[] = {
	{ /* 480x640 @ 60 Hz */
	.name = "Epson-VGA",
	.refresh = 60,
	.xres = 480,
	.yres = 640,
	.pixclock = 41701,
	.left_margin = 20,
	.right_margin = 41,
	.upper_margin = 10,
	.lower_margin = 5,
	.hsync_len = 20,
	.vsync_len = 10,
	.sync = FB_SYNC_OE_ACT_HIGH \| FB_SYNC_CLK_INVERT,
	.vmode = FB_VMODE_NONINTERLACED,
	.flag = 0,
	},
	};

	static struct mx3fb_platform_data mx3fb_pdata __initdata = {
	.name = "Epson-VGA",
	.mode = fb_modedb,
	.num_modes = ARRAY_SIZE(fb_modedb),
	};

	/* LCD */
	static struct l4f00242t03_pdata mx31_3ds_l4f00242t03_pdata = {
	.reset_gpio = IOMUX_TO_GPIO(MX31_PIN_LCS1),
	.data_enable_gpio = IOMUX_TO_GPIO(MX31_PIN_SER_RS),
	};

	/*
	* Support for SD card slot in personality board
	*/
	#define MX31_3DS_GPIO_SDHC1_CD IOMUX_TO_GPIO(MX31_PIN_GPIO3_1)
	#define MX31_3DS_GPIO_SDHC1_BE IOMUX_TO_GPIO(MX31_PIN_GPIO3_0)

	static struct gpio mx31_3ds_sdhc1_gpios[] = {
	{ MX31_3DS_GPIO_SDHC1_CD, GPIOF_IN, "sdhc1-card-detect" },
	{ MX31_3DS_GPIO_SDHC1_BE, GPIOF_OUT_INIT_LOW, "sdhc1-bus-en" },
	};

	static int mx31_3ds_sdhc1_init(struct device *dev,
	irq_handler_t detect_irq,
	void *data)
	{
	int ret;

	ret = gpio_request_array(mx31_3ds_sdhc1_gpios,
	ARRAY_SIZE(mx31_3ds_sdhc1_gpios));
	if (ret) {
	pr_warning("Unable to request the SD/MMC GPIOs.\n");
	return ret;
	}

	ret = request_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO3_1)),
	detect_irq, IRQF_DISABLED \|
	IRQF_TRIGGER_FALLING \| IRQF_TRIGGER_RISING,
	"sdhc1-detect", data);
	if (ret) {
	pr_warning("Unable to request the SD/MMC card-detect IRQ.\n");
	goto gpio_free;
	}

	return 0;

	gpio_free:
	gpio_free_array(mx31_3ds_sdhc1_gpios,
	ARRAY_SIZE(mx31_3ds_sdhc1_gpios));
	return ret;
	}

	static void mx31_3ds_sdhc1_exit(struct device dev, void data)
	{
	free_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO3_1)), data);
	gpio_free_array(mx31_3ds_sdhc1_gpios,
	ARRAY_SIZE(mx31_3ds_sdhc1_gpios));
	}

	static void mx31_3ds_sdhc1_setpower(struct device *dev, unsigned int vdd)
	{
	/*
	* While the voltage stuff is done by the driver, activate the
	* Buffer Enable Pin only if there is a card in slot to fix the card
	* voltage issue caused by bi-directional chip TXB0108 on 3Stack.
	* Done here because at this stage we have for sure a debounced value
	* of the presence of the card, showed by the value of vdd.
	* 7 == ilog2(MMC_VDD_165_195)
	*/
	if (vdd > 7)
	gpio_set_value(MX31_3DS_GPIO_SDHC1_BE, 1);
	else
	gpio_set_value(MX31_3DS_GPIO_SDHC1_BE, 0);
	}

	static struct imxmmc_platform_data sdhc1_pdata = {
	.init = mx31_3ds_sdhc1_init,
	.exit = mx31_3ds_sdhc1_exit,
	.setpower = mx31_3ds_sdhc1_setpower,
	};

	/*
	* Matrix keyboard
	*/

	static const uint32_t mx31_3ds_keymap[] = {
	KEY(0, 0, KEY_UP),
	KEY(0, 1, KEY_DOWN),
	KEY(1, 0, KEY_RIGHT),
	KEY(1, 1, KEY_LEFT),
	KEY(1, 2, KEY_ENTER),
	KEY(2, 0, KEY_F6),
	KEY(2, 1, KEY_F8),
	KEY(2, 2, KEY_F9),
	KEY(2, 3, KEY_F10),
	};

	static const struct matrix_keymap_data mx31_3ds_keymap_data __initconst = {
	.keymap = mx31_3ds_keymap,
	.keymap_size = ARRAY_SIZE(mx31_3ds_keymap),
	};

	/* Regulators */
	static struct regulator_init_data pwgtx_init = {
	.constraints = {
	.boot_on = 1,
	.always_on = 1,
	},
	};

	static struct regulator_init_data gpo_init = {
	.constraints = {
	.boot_on = 1,
	.always_on = 1,
	}
	};

	static struct regulator_consumer_supply vmmc2_consumers[] = {
	REGULATOR_SUPPLY("vmmc", "mxc-mmc.0"),
	};

	static struct regulator_init_data vmmc2_init = {
	.constraints = {
	.min_uV = 3000000,
	.max_uV = 3000000,
	.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE \|
	REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies = ARRAY_SIZE(vmmc2_consumers),
	.consumer_supplies = vmmc2_consumers,
	};

	static struct regulator_consumer_supply vmmc1_consumers[] = {
	REGULATOR_SUPPLY("vcore", "spi0.0"),
	REGULATOR_SUPPLY("cmos_2v8", "soc-camera-pdrv.0"),
	};

	static struct regulator_init_data vmmc1_init = {
	.constraints = {
	.min_uV = 2800000,
	.max_uV = 2800000,
	.apply_uV = 1,
	.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE \|
	REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies = ARRAY_SIZE(vmmc1_consumers),
	.consumer_supplies = vmmc1_consumers,
	};

	static struct regulator_consumer_supply vgen_consumers[] = {
	REGULATOR_SUPPLY("vdd", "spi0.0"),
	};

	static struct regulator_init_data vgen_init = {
	.constraints = {
	.min_uV = 1800000,
	.max_uV = 1800000,
	.apply_uV = 1,
	.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE \|
	REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies = ARRAY_SIZE(vgen_consumers),
	.consumer_supplies = vgen_consumers,
	};

	static struct regulator_consumer_supply vvib_consumers[] = {
	REGULATOR_SUPPLY("cmos_vcore", "soc-camera-pdrv.0"),
	};

	static struct regulator_init_data vvib_init = {
	.constraints = {
	.min_uV = 1300000,
	.max_uV = 1300000,
	.apply_uV = 1,
	.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE \|
	REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies = ARRAY_SIZE(vvib_consumers),
	.consumer_supplies = vvib_consumers,
	};

	static struct mc13xxx_regulator_init_data mx31_3ds_regulators[] = {
	{
	.id = MC13783_REG_PWGT1SPI, /* Power Gate for ARM core. */
	.init_data = &pwgtx_init,
	}, {
	.id = MC13783_REG_PWGT2SPI, /* Power Gate for L2 Cache. */
	.init_data = &pwgtx_init,
	}, {

	.id = MC13783_REG_GPO1, /* Turn on 1.8V */
	.init_data = &gpo_init,
	}, {
	.id = MC13783_REG_GPO3, /* Turn on 3.3V */
	.init_data = &gpo_init,
	}, {
	.id = MC13783_REG_VMMC2, /* Power MMC/SD, WiFi/Bluetooth. */
	.init_data = &vmmc2_init,
	}, {
	.id = MC13783_REG_VMMC1, /* Power LCD, CMOS, FM, GPS, Accel. */
	.init_data = &vmmc1_init,
	}, {
	.id = MC13783_REG_VGEN, /* Power LCD */
	.init_data = &vgen_init,
	}, {
	.id = MC13783_REG_VVIB, /* Power CMOS */
	.init_data = &vvib_init,
	},
	};

	/* MC13783 */
	static struct mc13xxx_codec_platform_data mx31_3ds_codec = {
	.dac_ssi_port = MC13783_SSI1_PORT,
	.adc_ssi_port = MC13783_SSI1_PORT,
	};

	static struct mc13xxx_platform_data mc13783_pdata = {
	.regulators = {
	.regulators = mx31_3ds_regulators,
	.num_regulators = ARRAY_SIZE(mx31_3ds_regulators),
	},
	.codec = &mx31_3ds_codec,
	.flags = MC13XXX_USE_TOUCHSCREEN \| MC13XXX_USE_RTC \| MC13XXX_USE_CODEC,

	};

	static struct imx_ssi_platform_data mx31_3ds_ssi_pdata = {
	.flags = IMX_SSI_DMA \| IMX_SSI_NET,
	};

	/* SPI */
	static int spi0_internal_chipselect[] = {
	MXC_SPI_CS(2),
	};

	static const struct spi_imx_master spi0_pdata __initconst = {
	.chipselect = spi0_internal_chipselect,
	.num_chipselect = ARRAY_SIZE(spi0_internal_chipselect),
	};

	static int spi1_internal_chipselect[] = {
	MXC_SPI_CS(0),
	MXC_SPI_CS(2),
	};

	static const struct spi_imx_master spi1_pdata __initconst = {
	.chipselect = spi1_internal_chipselect,
	.num_chipselect = ARRAY_SIZE(spi1_internal_chipselect),
	};

	static struct spi_board_info mx31_3ds_spi_devs[] __initdata = {
	{
	.modalias = "mc13783",
	.max_speed_hz = 1000000,
	.bus_num = 1,
	.chip_select = 1, /* SS2 */
	.platform_data = &mc13783_pdata,
	/* irq number is run-time assigned */
	.mode = SPI_CS_HIGH,
	}, {
	.modalias = "l4f00242t03",
	.max_speed_hz = 5000000,
	.bus_num = 0,
	.chip_select = 0, /* SS2 */
	.platform_data = &mx31_3ds_l4f00242t03_pdata,
	},
	};

	/*
	* NAND Flash
	*/
	static const struct mxc_nand_platform_data
	mx31_3ds_nand_board_info __initconst = {
	.width = 1,
	.hw_ecc = 1,
	#ifdef CONFIG_MACH_MX31_3DS_MXC_NAND_USE_BBT
	.flash_bbt = 1,
	#endif
	};

	/*
	* USB OTG
	*/

	#define USB_PAD_CFG (PAD_CTL_DRV_MAX \| PAD_CTL_SRE_FAST \| PAD_CTL_HYS_CMOS \| \
	PAD_CTL_ODE_CMOS \| PAD_CTL_100K_PU)

	#define USBOTG_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_PWR)
	#define USBH2_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_BYP)

	static int mx31_3ds_usbotg_init(void)
	{
	int err;

	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);

	err = gpio_request(USBOTG_RST_B, "otgusb-reset");
	if (err) {
	pr_err("Failed to request the USB OTG reset gpio\n");
	return err;
	}

	err = gpio_direction_output(USBOTG_RST_B, 0);
	if (err) {
	pr_err("Failed to drive the USB OTG reset gpio\n");
	goto usbotg_free_reset;
	}

	mdelay(1);
	gpio_set_value(USBOTG_RST_B, 1);
	return 0;

	usbotg_free_reset:
	gpio_free(USBOTG_RST_B);
	return err;
	}

	static int mx31_3ds_otg_init(struct platform_device *pdev)
	{
	return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
	}

	static int mx31_3ds_host2_init(struct platform_device *pdev)
	{
	int err;

	mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_PC_VS2, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_PC_BVD1, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_PC_BVD2, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_PC_RST, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_IOIS16, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_PC_RW_B, USB_PAD_CFG);

	err = gpio_request(USBH2_RST_B, "usbh2-reset");
	if (err) {
	pr_err("Failed to request the USB Host 2 reset gpio\n");
	return err;
	}

	err = gpio_direction_output(USBH2_RST_B, 0);
	if (err) {
	pr_err("Failed to drive the USB Host 2 reset gpio\n");
	goto usbotg_free_reset;
	}

	mdelay(1);
	gpio_set_value(USBH2_RST_B, 1);

	mdelay(10);

	return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);

	usbotg_free_reset:
	gpio_free(USBH2_RST_B);
	return err;
	}

	static struct mxc_usbh_platform_data otg_pdata __initdata = {
	.init = mx31_3ds_otg_init,
	.portsc = MXC_EHCI_MODE_ULPI,
	};

	static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
	.init = mx31_3ds_host2_init,
	.portsc = MXC_EHCI_MODE_ULPI,
	};

	static const struct fsl_usb2_platform_data usbotg_pdata __initconst = {
	.operating_mode = FSL_USB2_DR_DEVICE,
	.phy_mode = FSL_USB2_PHY_ULPI,
	};

	static bool otg_mode_host __initdata;

	static int __init mx31_3ds_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=", mx31_3ds_otg_mode);

	static const struct imxuart_platform_data uart_pdata __initconst = {
	.flags = IMXUART_HAVE_RTSCTS,
	};

	static const struct imxi2c_platform_data mx31_3ds_i2c0_data __initconst = {
	.bitrate = 100000,
	};

	static struct platform_device *devices[] __initdata = {
	&mx31_3ds_ov2640,
	};

	static void __init mx31_3ds_init(void)
	{
	int ret;

	imx31_soc_init();

	/* Configure SPI1 IOMUX */
	mxc_iomux_set_gpr(MUX_PGP_CSPI_BB, true);

	mxc_iomux_setup_multiple_pins(mx31_3ds_pins, ARRAY_SIZE(mx31_3ds_pins),
	"mx31_3ds");

	imx31_add_imx_uart0(&uart_pdata);
	imx31_add_mxc_nand(&mx31_3ds_nand_board_info);

	imx31_add_spi_imx1(&spi1_pdata);
	mx31_3ds_spi_devs[0].irq = gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
	spi_register_board_info(mx31_3ds_spi_devs,
	ARRAY_SIZE(mx31_3ds_spi_devs));

	platform_add_devices(devices, ARRAY_SIZE(devices));

	imx31_add_imx_keypad(&mx31_3ds_keymap_data);

	mx31_3ds_usbotg_init();
	if (otg_mode_host) {
	otg_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS \|
	ULPI_OTG_DRVVBUS_EXT);
	if (otg_pdata.otg)
	imx31_add_mxc_ehci_otg(&otg_pdata);
	}
	usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS \|
	ULPI_OTG_DRVVBUS_EXT);
	if (usbh2_pdata.otg)
	imx31_add_mxc_ehci_hs(2, &usbh2_pdata);

	if (!otg_mode_host)
	imx31_add_fsl_usb2_udc(&usbotg_pdata);

	if (mxc_expio_init(MX31_CS5_BASE_ADDR, IOMUX_TO_GPIO(MX31_PIN_GPIO1_1)))
	printk(KERN_WARNING "Init of the debug board failed, all "
	"devices on the debug board are unusable.\n");
	imx31_add_imx2_wdt();
	imx31_add_imx_i2c0(&mx31_3ds_i2c0_data);
	imx31_add_mxc_mmc(0, &sdhc1_pdata);

	imx31_add_spi_imx0(&spi0_pdata);
	imx31_add_ipu_core();
	imx31_add_mx3_sdc_fb(&mx3fb_pdata);

	/* CSI */
	/* Camera power: default - off */
	ret = gpio_request_array(mx31_3ds_camera_gpios,
	ARRAY_SIZE(mx31_3ds_camera_gpios));
	if (ret) {
	pr_err("Failed to request camera gpios");
	iclink_ov2640.power = NULL;
	}

	mx31_3ds_init_camera();

	imx31_add_imx_ssi(0, &mx31_3ds_ssi_pdata);

	imx_add_platform_device("imx_mc13783", 0, NULL, 0, NULL, 0);
	}

	static void __init mx31_3ds_timer_init(void)
	{
	mx31_clocks_init(26000000);
	}

	static struct sys_timer mx31_3ds_timer = {
	.init = mx31_3ds_timer_init,
	};

	static void __init mx31_3ds_reserve(void)
	{
	/* reserve MX31_3DS_CAMERA_BUF_SIZE bytes for mx3-camera */
	mx3_camera_base = arm_memblock_steal(MX31_3DS_CAMERA_BUF_SIZE,
	MX31_3DS_CAMERA_BUF_SIZE);
	}

	MACHINE_START(MX31_3DS, "Freescale MX31PDK (3DS)")
	/* Maintainer: Freescale Semiconductor, Inc. */
	.atag_offset = 0x100,
	.map_io = mx31_map_io,
	.init_early = imx31_init_early,
	.init_irq = mx31_init_irq,
	.handle_irq = imx31_handle_irq,
	.timer = &mx31_3ds_timer,
	.init_machine = mx31_3ds_init,
	.reserve = mx31_3ds_reserve,
	.restart = mxc_restart,
	MACHINE_END