arch/arm/mach-omap2/board-overo.c

/*
 * board-overo.c (Gumstix Overo)
 *
 * Initial code: Steve Sakoman <steve@sakoman.com>
 *
 * 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.
 *
 * 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 St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/i2c/twl.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.h>
#include <linux/spi/spi.h>

#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/mmc/host.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/map.h>

#include <plat/board.h>
#include <plat/common.h>
#include <plat/display.h>
#include <plat/panel-generic-dpi.h>
#include <mach/gpio.h>
#include <plat/gpmc.h>
#include <mach/hardware.h>
#include <plat/nand.h>
#include <plat/mcspi.h>
#include <plat/mux.h>
#include <plat/usb.h>

#include "mux.h"
#include "sdram-micron-mt46h32m32lf-6.h"
#include "hsmmc.h"

#define OVERO_GPIO_BT_XGATE	15
#define OVERO_GPIO_W2W_NRESET	16
#define OVERO_GPIO_PENDOWN	114
#define OVERO_GPIO_BT_NRESET	164
#define OVERO_GPIO_USBH_CPEN	168
#define OVERO_GPIO_USBH_NRESET	183

#define NAND_BLOCK_SIZE SZ_128K

#define OVERO_SMSC911X_CS      5
#define OVERO_SMSC911X_GPIO    176
#define OVERO_SMSC911X2_CS     4
#define OVERO_SMSC911X2_GPIO   65

#if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
	defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)

#include <linux/spi/ads7846.h>

static struct omap2_mcspi_device_config ads7846_mcspi_config = {
	.turbo_mode	= 0,
	.single_channel	= 1,	/* 0: slave, 1: master */
};

static int ads7846_get_pendown_state(void)
{
	return !gpio_get_value(OVERO_GPIO_PENDOWN);
}

static struct ads7846_platform_data ads7846_config = {
	.x_max			= 0x0fff,
	.y_max			= 0x0fff,
	.x_plate_ohms		= 180,
	.pressure_max		= 255,
	.debounce_max		= 10,
	.debounce_tol		= 3,
	.debounce_rep		= 1,
	.get_pendown_state	= ads7846_get_pendown_state,
	.keep_vref_on		= 1,
};

/* fixed regulator for ads7846 */
static struct regulator_consumer_supply ads7846_supply =
	REGULATOR_SUPPLY("vcc", "spi1.0");

static struct regulator_init_data vads7846_regulator = {
	.constraints = {
		.valid_ops_mask		= REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies	= 1,
	.consumer_supplies	= &ads7846_supply,
};

static struct fixed_voltage_config vads7846 = {
	.supply_name		= "vads7846",
	.microvolts		= 3300000, /* 3.3V */
	.gpio			= -EINVAL,
	.startup_delay		= 0,
	.init_data		= &vads7846_regulator,
};

static struct platform_device vads7846_device = {
	.name		= "reg-fixed-voltage",
	.id		= 1,
	.dev = {
		.platform_data = &vads7846,
	},
};

static void __init overo_ads7846_init(void)
{
	if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
	    (gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) {
		gpio_export(OVERO_GPIO_PENDOWN, 0);
	} else {
		printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");
		return;
	}

	platform_device_register(&vads7846_device);
}

#else
static inline void __init overo_ads7846_init(void) { return; }
#endif

#if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)

#include <linux/smsc911x.h>

static struct resource overo_smsc911x_resources[] = {
	{
		.name	= "smsc911x-memory",
		.flags	= IORESOURCE_MEM,
	},
	{
		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
	},
};

static struct resource overo_smsc911x2_resources[] = {
	{
		.name	= "smsc911x2-memory",
		.flags	= IORESOURCE_MEM,
	},
	{
		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
	},
};

static struct smsc911x_platform_config overo_smsc911x_config = {
	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
	.irq_type	= SMSC911X_IRQ_TYPE_OPEN_DRAIN,
	.flags		= SMSC911X_USE_32BIT ,
	.phy_interface	= PHY_INTERFACE_MODE_MII,
};

static struct platform_device overo_smsc911x_device = {
	.name		= "smsc911x",
	.id		= 0,
	.num_resources	= ARRAY_SIZE(overo_smsc911x_resources),
	.resource	= overo_smsc911x_resources,
	.dev		= {
		.platform_data = &overo_smsc911x_config,
	},
};

static struct platform_device overo_smsc911x2_device = {
	.name		= "smsc911x",
	.id		= 1,
	.num_resources	= ARRAY_SIZE(overo_smsc911x2_resources),
	.resource	= overo_smsc911x2_resources,
	.dev		= {
		.platform_data = &overo_smsc911x_config,
	},
};

static struct platform_device *smsc911x_devices[] = {
	&overo_smsc911x_device,
	&overo_smsc911x2_device,
};

static inline void __init overo_init_smsc911x(void)
{
	unsigned long cs_mem_base, cs_mem_base2;

	/* set up first smsc911x chip */

	if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
		printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
		return;
	}

	overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
	overo_smsc911x_resources[0].end   = cs_mem_base + 0xff;

	if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
	    (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
		gpio_export(OVERO_SMSC911X_GPIO, 0);
	} else {
		printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
		return;
	}

	overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
	overo_smsc911x_resources[1].end	  = 0;

	/* set up second smsc911x chip */

	if (gpmc_cs_request(OVERO_SMSC911X2_CS, SZ_16M, &cs_mem_base2) < 0) {
		printk(KERN_ERR "Failed request for GPMC mem for smsc911x2\n");
		return;
	}

	overo_smsc911x2_resources[0].start = cs_mem_base2 + 0x0;
	overo_smsc911x2_resources[0].end   = cs_mem_base2 + 0xff;

	if ((gpio_request(OVERO_SMSC911X2_GPIO, "SMSC911X2 IRQ") == 0) &&
	    (gpio_direction_input(OVERO_SMSC911X2_GPIO) == 0)) {
		gpio_export(OVERO_SMSC911X2_GPIO, 0);
	} else {
		printk(KERN_ERR "could not obtain gpio for SMSC911X2 IRQ\n");
		return;
	}

	overo_smsc911x2_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X2_GPIO);
	overo_smsc911x2_resources[1].end   = 0;

	platform_add_devices(smsc911x_devices, ARRAY_SIZE(smsc911x_devices));
}

#else
static inline void __init overo_init_smsc911x(void) { return; }
#endif

/* DSS */
static int lcd_enabled;
static int dvi_enabled;

#define OVERO_GPIO_LCD_EN 144
#define OVERO_GPIO_LCD_BL 145

static void __init overo_display_init(void)
{
	if ((gpio_request(OVERO_GPIO_LCD_EN, "OVERO_GPIO_LCD_EN") == 0) &&
	    (gpio_direction_output(OVERO_GPIO_LCD_EN, 1) == 0))
		gpio_export(OVERO_GPIO_LCD_EN, 0);
	else
		printk(KERN_ERR "could not obtain gpio for "
					"OVERO_GPIO_LCD_EN\n");

	if ((gpio_request(OVERO_GPIO_LCD_BL, "OVERO_GPIO_LCD_BL") == 0) &&
	    (gpio_direction_output(OVERO_GPIO_LCD_BL, 1) == 0))
		gpio_export(OVERO_GPIO_LCD_BL, 0);
	else
		printk(KERN_ERR "could not obtain gpio for "
					"OVERO_GPIO_LCD_BL\n");
}

static int overo_panel_enable_dvi(struct omap_dss_device *dssdev)
{
	if (lcd_enabled) {
		printk(KERN_ERR "cannot enable DVI, LCD is enabled\n");
		return -EINVAL;
	}
	dvi_enabled = 1;

	return 0;
}

static void overo_panel_disable_dvi(struct omap_dss_device *dssdev)
{
	dvi_enabled = 0;
}

static struct panel_generic_dpi_data dvi_panel = {
	.name			= "generic",
	.platform_enable	= overo_panel_enable_dvi,
	.platform_disable	= overo_panel_disable_dvi,
};

static struct omap_dss_device overo_dvi_device = {
	.name			= "dvi",
	.type			= OMAP_DISPLAY_TYPE_DPI,
	.driver_name		= "generic_dpi_panel",
	.data			= &dvi_panel,
	.phy.dpi.data_lines	= 24,
};

static struct omap_dss_device overo_tv_device = {
	.name = "tv",
	.driver_name = "venc",
	.type = OMAP_DISPLAY_TYPE_VENC,
	.phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
};

static int overo_panel_enable_lcd(struct omap_dss_device *dssdev)
{
	if (dvi_enabled) {
		printk(KERN_ERR "cannot enable LCD, DVI is enabled\n");
		return -EINVAL;
	}

	gpio_set_value(OVERO_GPIO_LCD_EN, 1);
	gpio_set_value(OVERO_GPIO_LCD_BL, 1);
	lcd_enabled = 1;
	return 0;
}

static void overo_panel_disable_lcd(struct omap_dss_device *dssdev)
{
	gpio_set_value(OVERO_GPIO_LCD_EN, 0);
	gpio_set_value(OVERO_GPIO_LCD_BL, 0);
	lcd_enabled = 0;
}

static struct panel_generic_dpi_data lcd43_panel = {
	.name			= "samsung_lte430wq_f0c",
	.platform_enable	= overo_panel_enable_lcd,
	.platform_disable	= overo_panel_disable_lcd,
};

static struct omap_dss_device overo_lcd43_device = {
	.name			= "lcd43",
	.type			= OMAP_DISPLAY_TYPE_DPI,
	.driver_name		= "generic_dpi_panel",
	.data			= &lcd43_panel,
	.phy.dpi.data_lines	= 24,
};

#if defined(CONFIG_PANEL_LGPHILIPS_LB035Q02) || \
	defined(CONFIG_PANEL_LGPHILIPS_LB035Q02_MODULE)
static struct omap_dss_device overo_lcd35_device = {
	.type			= OMAP_DISPLAY_TYPE_DPI,
	.name			= "lcd35",
	.driver_name		= "lgphilips_lb035q02_panel",
	.phy.dpi.data_lines	= 24,
	.platform_enable	= overo_panel_enable_lcd,
	.platform_disable	= overo_panel_disable_lcd,
};
#endif

static struct omap_dss_device *overo_dss_devices[] = {
	&overo_dvi_device,
	&overo_tv_device,
#if defined(CONFIG_PANEL_LGPHILIPS_LB035Q02) || \
	defined(CONFIG_PANEL_LGPHILIPS_LB035Q02_MODULE)
	&overo_lcd35_device,
#endif
	&overo_lcd43_device,
};

static struct omap_dss_board_info overo_dss_data = {
	.num_devices	= ARRAY_SIZE(overo_dss_devices),
	.devices	= overo_dss_devices,
	.default_device	= &overo_dvi_device,
};

static struct regulator_consumer_supply overo_vdda_dac_supply =
	REGULATOR_SUPPLY("vdda_dac", "omapdss_venc");

static struct regulator_consumer_supply overo_vdds_dsi_supply[] = {
	REGULATOR_SUPPLY("vdds_dsi", "omapdss"),
	REGULATOR_SUPPLY("vdds_dsi", "omapdss_dsi1"),
};

static struct mtd_partition overo_nand_partitions[] = {
	{
		.name           = "xloader",
		.offset         = 0,			/* Offset = 0x00000 */
		.size           = 4 * NAND_BLOCK_SIZE,
		.mask_flags     = MTD_WRITEABLE
	},
	{
		.name           = "uboot",
		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
		.size           = 14 * NAND_BLOCK_SIZE,
	},
	{
		.name           = "uboot environment",
		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x240000 */
		.size           = 2 * NAND_BLOCK_SIZE,
	},
	{
		.name           = "linux",
		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x280000 */
		.size           = 32 * NAND_BLOCK_SIZE,
	},
	{
		.name           = "rootfs",
		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x680000 */
		.size           = MTDPART_SIZ_FULL,
	},
};

static struct omap_nand_platform_data overo_nand_data = {
	.parts = overo_nand_partitions,
	.nr_parts = ARRAY_SIZE(overo_nand_partitions),
	.dma_channel = -1,	/* disable DMA in OMAP NAND driver */
};

static void __init overo_flash_init(void)
{
	u8 cs = 0;
	u8 nandcs = GPMC_CS_NUM + 1;

	/* find out the chip-select on which NAND exists */
	while (cs < GPMC_CS_NUM) {
		u32 ret = 0;
		ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);

		if ((ret & 0xC00) == 0x800) {
			printk(KERN_INFO "Found NAND on CS%d\n", cs);
			if (nandcs > GPMC_CS_NUM)
				nandcs = cs;
		}
		cs++;
	}

	if (nandcs > GPMC_CS_NUM) {
		printk(KERN_INFO "NAND: Unable to find configuration "
				 "in GPMC\n ");
		return;
	}

	if (nandcs < GPMC_CS_NUM) {
		overo_nand_data.cs = nandcs;

		printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
		if (gpmc_nand_init(&overo_nand_data) < 0)
			printk(KERN_ERR "Unable to register NAND device\n");
	}
}

static struct omap2_hsmmc_info mmc[] = {
	{
		.mmc		= 1,
		.caps		= MMC_CAP_4_BIT_DATA,
		.gpio_cd	= -EINVAL,
		.gpio_wp	= -EINVAL,
	},
	{
		.mmc		= 2,
		.caps		= MMC_CAP_4_BIT_DATA,
		.gpio_cd	= -EINVAL,
		.gpio_wp	= -EINVAL,
		.transceiver	= true,
		.ocr_mask	= 0x00100000,	/* 3.3V */
	},
	{}	/* Terminator */
};

static struct regulator_consumer_supply overo_vmmc1_supply = {
	.supply			= "vmmc",
};

#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
#include <linux/leds.h>

static struct gpio_led gpio_leds[] = {
	{
		.name			= "overo:red:gpio21",
		.default_trigger	= "heartbeat",
		.gpio			= 21,
		.active_low		= true,
	},
	{
		.name			= "overo:blue:gpio22",
		.default_trigger	= "none",
		.gpio			= 22,
		.active_low		= true,
	},
	{
		.name			= "overo:blue:COM",
		.default_trigger	= "mmc0",
		.gpio			= -EINVAL,	/* gets replaced */
		.active_low		= true,
	},
};

static struct gpio_led_platform_data gpio_leds_pdata = {
	.leds		= gpio_leds,
	.num_leds	= ARRAY_SIZE(gpio_leds),
};

static struct platform_device gpio_leds_device = {
	.name	= "leds-gpio",
	.id	= -1,
	.dev	= {
		.platform_data	= &gpio_leds_pdata,
	},
};

static void __init overo_init_led(void)
{
	platform_device_register(&gpio_leds_device);
}

#else
static inline void __init overo_init_led(void) { return; }
#endif

static int overo_twl_gpio_setup(struct device *dev,
		unsigned gpio, unsigned ngpio)
{
	omap2_hsmmc_init(mmc);

	overo_vmmc1_supply.dev = mmc[0].dev;

#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
	/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
	gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
#endif

	return 0;
}

static struct twl4030_gpio_platform_data overo_gpio_data = {
	.gpio_base	= OMAP_MAX_GPIO_LINES,
	.irq_base	= TWL4030_GPIO_IRQ_BASE,
	.irq_end	= TWL4030_GPIO_IRQ_END,
	.use_leds	= true,
	.setup		= overo_twl_gpio_setup,
};

static struct twl4030_usb_data overo_usb_data = {
	.usb_mode	= T2_USB_MODE_ULPI,
};

static struct regulator_init_data overo_vmmc1 = {
	.constraints = {
		.min_uV			= 1850000,
		.max_uV			= 3150000,
		.valid_modes_mask	= REGULATOR_MODE_NORMAL
					| REGULATOR_MODE_STANDBY,
		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
					| REGULATOR_CHANGE_MODE
					| REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies	= 1,
	.consumer_supplies	= &overo_vmmc1_supply,
};

/* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
static struct regulator_init_data overo_vdac = {
	.constraints = {
		.min_uV			= 1800000,
		.max_uV			= 1800000,
		.valid_modes_mask	= REGULATOR_MODE_NORMAL
					| REGULATOR_MODE_STANDBY,
		.valid_ops_mask		= REGULATOR_CHANGE_MODE
					| REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies	= 1,
	.consumer_supplies	= &overo_vdda_dac_supply,
};

/* VPLL2 for digital video outputs */
static struct regulator_init_data overo_vpll2 = {
	.constraints = {
		.name			= "VDVI",
		.min_uV			= 1800000,
		.max_uV			= 1800000,
		.valid_modes_mask	= REGULATOR_MODE_NORMAL
					| REGULATOR_MODE_STANDBY,
		.valid_ops_mask		= REGULATOR_CHANGE_MODE
					| REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies	= ARRAY_SIZE(overo_vdds_dsi_supply),
	.consumer_supplies	= overo_vdds_dsi_supply,
};

static struct twl4030_codec_audio_data overo_audio_data;

static struct twl4030_codec_data overo_codec_data = {
	.audio_mclk = 26000000,
	.audio = &overo_audio_data,
};

static struct twl4030_platform_data overo_twldata = {
	.irq_base	= TWL4030_IRQ_BASE,
	.irq_end	= TWL4030_IRQ_END,
	.gpio		= &overo_gpio_data,
	.usb		= &overo_usb_data,
	.codec		= &overo_codec_data,
	.vmmc1		= &overo_vmmc1,
	.vdac		= &overo_vdac,
	.vpll2		= &overo_vpll2,
};

static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
	{
		I2C_BOARD_INFO("tps65950", 0x48),
		.flags = I2C_CLIENT_WAKE,
		.irq = INT_34XX_SYS_NIRQ,
		.platform_data = &overo_twldata,
	},
};

static int __init overo_i2c_init(void)
{
	omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
			ARRAY_SIZE(overo_i2c_boardinfo));
	/* i2c2 pins are used for gpio */
	omap_register_i2c_bus(3, 400, NULL, 0);
	return 0;
}

static struct spi_board_info overo_spi_board_info[] __initdata = {
#if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
	defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
	{
		.modalias		= "ads7846",
		.bus_num		= 1,
		.chip_select		= 0,
		.max_speed_hz		= 1500000,
		.controller_data	= &ads7846_mcspi_config,
		.irq			= OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN),
		.platform_data		= &ads7846_config,
	},
#endif
#if defined(CONFIG_PANEL_LGPHILIPS_LB035Q02) || \
	defined(CONFIG_PANEL_LGPHILIPS_LB035Q02_MODULE)
	{
		.modalias		= "lgphilips_lb035q02_panel-spi",
		.bus_num		= 1,
		.chip_select		= 1,
		.max_speed_hz		= 500000,
		.mode			= SPI_MODE_3,
	},
#endif
};

static int __init overo_spi_init(void)
{
	overo_ads7846_init();
	spi_register_board_info(overo_spi_board_info,
			ARRAY_SIZE(overo_spi_board_info));
	return 0;
}

static void __init overo_init_early(void)
{
	omap2_init_common_infrastructure();
	omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
				  mt46h32m32lf6_sdrc_params);
}

static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
	.port_mode[0] = EHCI_HCD_OMAP_MODE_UNKNOWN,
	.port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
	.port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,

	.phy_reset  = true,
	.reset_gpio_port[0]  = -EINVAL,
	.reset_gpio_port[1]  = OVERO_GPIO_USBH_NRESET,
	.reset_gpio_port[2]  = -EINVAL
};

#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
	{ .reg_offset = OMAP_MUX_TERMINATOR },
};
#endif

static struct omap_musb_board_data musb_board_data = {
	.interface_type		= MUSB_INTERFACE_ULPI,
	.mode			= MUSB_OTG,
	.power			= 100,
};

static void __init overo_init(void)
{
	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
	overo_i2c_init();
	omap_display_init(&overo_dss_data);
	omap_serial_init();
	overo_flash_init();
	usb_musb_init(&musb_board_data);
	usb_ehci_init(&ehci_pdata);
	overo_spi_init();
	overo_init_smsc911x();
	overo_display_init();
	overo_init_led();

	/* Ensure SDRC pins are mux'd for self-refresh */
	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
	omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);

	if ((gpio_request(OVERO_GPIO_W2W_NRESET,
			  "OVERO_GPIO_W2W_NRESET") == 0) &&
	    (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
		gpio_export(OVERO_GPIO_W2W_NRESET, 0);
		gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
		udelay(10);
		gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
	} else {
		printk(KERN_ERR "could not obtain gpio for "
					"OVERO_GPIO_W2W_NRESET\n");
	}

	if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
	    (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
		gpio_export(OVERO_GPIO_BT_XGATE, 0);
	else
		printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");

	if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
	    (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
		gpio_export(OVERO_GPIO_BT_NRESET, 0);
		gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
		mdelay(6);
		gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
	} else {
		printk(KERN_ERR "could not obtain gpio for "
					"OVERO_GPIO_BT_NRESET\n");
	}

	if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
	    (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
		gpio_export(OVERO_GPIO_USBH_CPEN, 0);
	else
		printk(KERN_ERR "could not obtain gpio for "
					"OVERO_GPIO_USBH_CPEN\n");
}

MACHINE_START(OVERO, "Gumstix Overo")
	.boot_params	= 0x80000100,
	.reserve	= omap_reserve,
	.map_io		= omap3_map_io,
	.init_early	= overo_init_early,
	.init_irq	= omap_init_irq,
	.init_machine	= overo_init,
	.timer		= &omap_timer,
MACHINE_END