/*
 * Copyright (C) 2009 Integration Software and Electronic Engineering.
 *
 * Modified from mach-omap2/board-generic.c
 *
 * 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.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>

#include <linux/regulator/machine.h>
#include <linux/i2c/twl.h>
#include <linux/mmc/host.h>

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

#include <plat/board.h>
#include <plat/common.h>
#include <plat/gpmc.h>
#include <plat/usb.h>
#include <plat/display.h>
#include <plat/onenand.h>

#include "mux.h"
#include "hsmmc.h"
#include "sdram-numonyx-m65kxxxxam.h"

#define IGEP2_SMSC911X_CS       5
#define IGEP2_SMSC911X_GPIO     176
#define IGEP2_GPIO_USBH_NRESET  24
#define IGEP2_GPIO_LED0_GREEN   26
#define IGEP2_GPIO_LED0_RED     27
#define IGEP2_GPIO_LED1_RED     28
#define IGEP2_GPIO_DVI_PUP      170

#define IGEP2_RB_GPIO_WIFI_NPD     94
#define IGEP2_RB_GPIO_WIFI_NRESET  95
#define IGEP2_RB_GPIO_BT_NRESET    137
#define IGEP2_RC_GPIO_WIFI_NPD     138
#define IGEP2_RC_GPIO_WIFI_NRESET  139
#define IGEP2_RC_GPIO_BT_NRESET    137

/*
 * IGEP2 Hardware Revision Table
 *
 *  --------------------------------------------------------------------------
 * | Id. | Hw Rev.            | HW0 (28) | WIFI_NPD | WIFI_NRESET | BT_NRESET |
 *  --------------------------------------------------------------------------
 * |  0  | B                  |   high   |  gpio94  |   gpio95    |     -     |
 * |  0  | B/C (B-compatible) |   high   |  gpio94  |   gpio95    |  gpio137  |
 * |  1  | C                  |   low    |  gpio138 |   gpio139   |  gpio137  |
 *  --------------------------------------------------------------------------
 */

#define IGEP2_BOARD_HWREV_B	0
#define IGEP2_BOARD_HWREV_C	1

static u8 hwrev;

static void __init igep2_get_revision(void)
{
	u8 ret;

	omap_mux_init_gpio(IGEP2_GPIO_LED1_RED, OMAP_PIN_INPUT);

	if ((gpio_request(IGEP2_GPIO_LED1_RED, "GPIO_HW0_REV") == 0) &&
	    (gpio_direction_input(IGEP2_GPIO_LED1_RED) == 0)) {
		ret = gpio_get_value(IGEP2_GPIO_LED1_RED);
		if (ret == 0) {
			pr_info("IGEP2: Hardware Revision C (B-NON compatible)\n");
			hwrev = IGEP2_BOARD_HWREV_C;
		} else if (ret ==  1) {
			pr_info("IGEP2: Hardware Revision B/C (B compatible)\n");
			hwrev = IGEP2_BOARD_HWREV_B;
		} else {
			pr_err("IGEP2: Unknown Hardware Revision\n");
			hwrev = -1;
		}
	} else {
		pr_warning("IGEP2: Could not obtain gpio GPIO_HW0_REV\n");
		pr_err("IGEP2: Unknown Hardware Revision\n");
	}

	gpio_free(IGEP2_GPIO_LED1_RED);
}

#if defined(CONFIG_MTD_ONENAND_OMAP2) || \
	defined(CONFIG_MTD_ONENAND_OMAP2_MODULE)

#define ONENAND_MAP             0x20000000

/* NAND04GR4E1A ( x2 Flash built-in COMBO POP MEMORY )
 * Since the device is equipped with two DataRAMs, and two-plane NAND
 * Flash memory array, these two component enables simultaneous program
 * of 4KiB. Plane1 has only even blocks such as block0, block2, block4
 * while Plane2 has only odd blocks such as block1, block3, block5.
 * So MTD regards it as 4KiB page size and 256KiB block size 64*(2*2048)
 */

static struct mtd_partition igep2_onenand_partitions[] = {
	{
		.name           = "X-Loader",
		.offset         = 0,
		.size           = 2 * (64*(2*2048))
	},
	{
		.name           = "U-Boot",
		.offset         = MTDPART_OFS_APPEND,
		.size           = 6 * (64*(2*2048)),
	},
	{
		.name           = "Environment",
		.offset         = MTDPART_OFS_APPEND,
		.size           = 2 * (64*(2*2048)),
	},
	{
		.name           = "Kernel",
		.offset         = MTDPART_OFS_APPEND,
		.size           = 12 * (64*(2*2048)),
	},
	{
		.name           = "File System",
		.offset         = MTDPART_OFS_APPEND,
		.size           = MTDPART_SIZ_FULL,
	},
};

static int igep2_onenand_setup(void __iomem *onenand_base, int freq)
{
       /* nothing is required to be setup for onenand as of now */
       return 0;
}

static struct omap_onenand_platform_data igep2_onenand_data = {
	.parts = igep2_onenand_partitions,
	.nr_parts = ARRAY_SIZE(igep2_onenand_partitions),
	.onenand_setup = igep2_onenand_setup,
	.dma_channel	= -1,	/* disable DMA in OMAP OneNAND driver */
};

static struct platform_device igep2_onenand_device = {
	.name		= "omap2-onenand",
	.id		= -1,
	.dev = {
		.platform_data = &igep2_onenand_data,
	},
};

static void __init igep2_flash_init(void)
{
	u8		cs = 0;
	u8		onenandcs = GPMC_CS_NUM + 1;

	while (cs < GPMC_CS_NUM) {
		u32 ret = 0;
		ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);

		/* Check if NAND/oneNAND is configured */
		if ((ret & 0xC00) == 0x800)
			/* NAND found */
			pr_err("IGEP v2: Unsupported NAND found\n");
		else {
			ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG7);
			if ((ret & 0x3F) == (ONENAND_MAP >> 24))
				/* ONENAND found */
				onenandcs = cs;
		}
		cs++;
	}
	if (onenandcs > GPMC_CS_NUM) {
		pr_err("IGEP v2: Unable to find configuration in GPMC\n");
		return;
	}

	if (onenandcs < GPMC_CS_NUM) {
		igep2_onenand_data.cs = onenandcs;
		if (platform_device_register(&igep2_onenand_device) < 0)
			pr_err("IGEP v2: Unable to register OneNAND device\n");
	}
}

#else
static void __init igep2_flash_init(void) {}
#endif

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

#include <linux/smsc911x.h>

static struct smsc911x_platform_config igep2_smsc911x_config = {
	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
	.irq_type	= SMSC911X_IRQ_TYPE_OPEN_DRAIN,
	.flags		= SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS  ,
	.phy_interface	= PHY_INTERFACE_MODE_MII,
};

static struct resource igep2_smsc911x_resources[] = {
	{
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= OMAP_GPIO_IRQ(IGEP2_SMSC911X_GPIO),
		.end	= OMAP_GPIO_IRQ(IGEP2_SMSC911X_GPIO),
		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
	},
};

static struct platform_device igep2_smsc911x_device = {
	.name		= "smsc911x",
	.id		= 0,
	.num_resources	= ARRAY_SIZE(igep2_smsc911x_resources),
	.resource	= igep2_smsc911x_resources,
	.dev		= {
		.platform_data = &igep2_smsc911x_config,
	},
};

static inline void __init igep2_init_smsc911x(void)
{
	unsigned long cs_mem_base;

	if (gpmc_cs_request(IGEP2_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
		pr_err("IGEP v2: Failed request for GPMC mem for smsc911x\n");
		gpmc_cs_free(IGEP2_SMSC911X_CS);
		return;
	}

	igep2_smsc911x_resources[0].start = cs_mem_base + 0x0;
	igep2_smsc911x_resources[0].end   = cs_mem_base + 0xff;

	if ((gpio_request(IGEP2_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
	    (gpio_direction_input(IGEP2_SMSC911X_GPIO) == 0)) {
		gpio_export(IGEP2_SMSC911X_GPIO, 0);
	} else {
		pr_err("IGEP v2: Could not obtain gpio for for SMSC911X IRQ\n");
		return;
	}

	platform_device_register(&igep2_smsc911x_device);
}

#else
static inline void __init igep2_init_smsc911x(void) { }
#endif

static struct omap_board_config_kernel igep2_config[] __initdata = {
};

static struct regulator_consumer_supply igep2_vmmc1_supply = {
	.supply		= "vmmc",
};

/* VMMC1 for OMAP VDD_MMC1 (i/o) and MMC1 card */
static struct regulator_init_data igep2_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      = &igep2_vmmc1_supply,
};

static struct omap2_hsmmc_info mmc[] = {
	{
		.mmc		= 1,
		.caps		= MMC_CAP_4_BIT_DATA,
		.gpio_cd	= -EINVAL,
		.gpio_wp	= -EINVAL,
	},
#if defined(CONFIG_LIBERTAS_SDIO) || defined(CONFIG_LIBERTAS_SDIO_MODULE)
	{
		.mmc		= 2,
		.caps		= MMC_CAP_4_BIT_DATA,
		.gpio_cd	= -EINVAL,
		.gpio_wp	= -EINVAL,
	},
#endif
	{}      /* Terminator */
};

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

static struct gpio_led igep2_gpio_leds[] = {
	[0] = {
		.name			= "gpio-led:red:d0",
		.gpio			= IGEP2_GPIO_LED0_RED,
		.default_trigger	= "default-off"
	},
	[1] = {
		.name			= "gpio-led:green:d0",
		.gpio			= IGEP2_GPIO_LED0_GREEN,
		.default_trigger	= "default-off",
	},
	[2] = {
		.name			= "gpio-led:red:d1",
		.gpio			= IGEP2_GPIO_LED1_RED,
		.default_trigger	= "default-off",
	},
	[3] = {
		.name			= "gpio-led:green:d1",
		.default_trigger	= "heartbeat",
		.gpio			= -EINVAL, /* gets replaced */
	},
};

static struct gpio_led_platform_data igep2_led_pdata = {
	.leds           = igep2_gpio_leds,
	.num_leds       = ARRAY_SIZE(igep2_gpio_leds),
};

static struct platform_device igep2_led_device = {
	 .name   = "leds-gpio",
	 .id     = -1,
	 .dev    = {
		 .platform_data  =  &igep2_led_pdata,
	},
};

static void __init igep2_leds_init(void)
{
	platform_device_register(&igep2_led_device);
}

#else
static inline void igep2_leds_init(void)
{
	if ((gpio_request(IGEP2_GPIO_LED0_RED, "gpio-led:red:d0") == 0) &&
	    (gpio_direction_output(IGEP2_GPIO_LED0_RED, 1) == 0)) {
		gpio_export(IGEP2_GPIO_LED0_RED, 0);
		gpio_set_value(IGEP2_GPIO_LED0_RED, 0);
	} else
		pr_warning("IGEP v2: Could not obtain gpio GPIO_LED0_RED\n");

	if ((gpio_request(IGEP2_GPIO_LED0_GREEN, "gpio-led:green:d0") == 0) &&
	    (gpio_direction_output(IGEP2_GPIO_LED0_GREEN, 1) == 0)) {
		gpio_export(IGEP2_GPIO_LED0_GREEN, 0);
		gpio_set_value(IGEP2_GPIO_LED0_GREEN, 0);
	} else
		pr_warning("IGEP v2: Could not obtain gpio GPIO_LED0_GREEN\n");

	if ((gpio_request(IGEP2_GPIO_LED1_RED, "gpio-led:red:d1") == 0) &&
	    (gpio_direction_output(IGEP2_GPIO_LED1_RED, 1) == 0)) {
		gpio_export(IGEP2_GPIO_LED1_RED, 0);
		gpio_set_value(IGEP2_GPIO_LED1_RED, 0);
	} else
		pr_warning("IGEP v2: Could not obtain gpio GPIO_LED1_RED\n");

}
#endif

static int igep2_twl_gpio_setup(struct device *dev,
		unsigned gpio, unsigned ngpio)
{
	/* gpio + 0 is "mmc0_cd" (input/IRQ) */
	mmc[0].gpio_cd = gpio + 0;
	omap2_hsmmc_init(mmc);

	/*
	 * link regulators to MMC adapters ... we "know" the
	 * regulators will be set up only *after* we return.
	 */
	igep2_vmmc1_supply.dev = mmc[0].dev;

	/*
	 * REVISIT: need ehci-omap hooks for external VBUS
	 * power switch and overcurrent detect
	 */
	if ((gpio_request(gpio + 1, "GPIO_EHCI_NOC") < 0) ||
	    (gpio_direction_input(gpio + 1) < 0))
		pr_err("IGEP2: Could not obtain gpio for EHCI NOC");

	/*
	 * TWL4030_GPIO_MAX + 0 == ledA, GPIO_USBH_CPEN
	 * (out, active low)
	 */
	if ((gpio_request(gpio + TWL4030_GPIO_MAX, "GPIO_USBH_CPEN") < 0) ||
	    (gpio_direction_output(gpio + TWL4030_GPIO_MAX, 0) < 0))
		pr_err("IGEP2: Could not obtain gpio for USBH_CPEN");

	/* TWL4030_GPIO_MAX + 1 == ledB (out, active low LED) */
#if !defined(CONFIG_LEDS_GPIO) && !defined(CONFIG_LEDS_GPIO_MODULE)
	if ((gpio_request(gpio+TWL4030_GPIO_MAX+1, "gpio-led:green:d1") == 0)
	    && (gpio_direction_output(gpio + TWL4030_GPIO_MAX + 1, 1) == 0)) {
		gpio_export(gpio + TWL4030_GPIO_MAX + 1, 0);
		gpio_set_value(gpio + TWL4030_GPIO_MAX + 1, 0);
	} else
		pr_warning("IGEP v2: Could not obtain gpio GPIO_LED1_GREEN\n");
#else
	igep2_gpio_leds[3].gpio = gpio + TWL4030_GPIO_MAX + 1;
#endif

	return 0;
};

static struct twl4030_gpio_platform_data igep2_twl4030_gpio_pdata = {
	.gpio_base	= OMAP_MAX_GPIO_LINES,
	.irq_base	= TWL4030_GPIO_IRQ_BASE,
	.irq_end	= TWL4030_GPIO_IRQ_END,
	.use_leds	= true,
	.setup		= igep2_twl_gpio_setup,
};

static struct twl4030_usb_data igep2_usb_data = {
	.usb_mode	= T2_USB_MODE_ULPI,
};

static int igep2_enable_dvi(struct omap_dss_device *dssdev)
{
	gpio_direction_output(IGEP2_GPIO_DVI_PUP, 1);

	return 0;
}

static void igep2_disable_dvi(struct omap_dss_device *dssdev)
{
	gpio_direction_output(IGEP2_GPIO_DVI_PUP, 0);
}

static struct omap_dss_device igep2_dvi_device = {
	.type			= OMAP_DISPLAY_TYPE_DPI,
	.name			= "dvi",
	.driver_name		= "generic_panel",
	.phy.dpi.data_lines	= 24,
	.platform_enable	= igep2_enable_dvi,
	.platform_disable	= igep2_disable_dvi,
};

static struct omap_dss_device *igep2_dss_devices[] = {
	&igep2_dvi_device
};

static struct omap_dss_board_info igep2_dss_data = {
	.num_devices	= ARRAY_SIZE(igep2_dss_devices),
	.devices	= igep2_dss_devices,
	.default_device	= &igep2_dvi_device,
};

static struct platform_device igep2_dss_device = {
	.name	= "omapdss",
	.id	= -1,
	.dev	= {
		.platform_data = &igep2_dss_data,
	},
};

static struct regulator_consumer_supply igep2_vpll2_supply = {
	.supply	= "vdds_dsi",
	.dev	= &igep2_dss_device.dev,
};

static struct regulator_init_data igep2_vpll2 = {
	.constraints = {
		.name			= "VDVI",
		.min_uV			= 1800000,
		.max_uV			= 1800000,
		.apply_uV		= true,
		.valid_modes_mask	= REGULATOR_MODE_NORMAL
					| REGULATOR_MODE_STANDBY,
		.valid_ops_mask		= REGULATOR_CHANGE_MODE
					| REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies	= 1,
	.consumer_supplies	= &igep2_vpll2_supply,
};

static void __init igep2_display_init(void)
{
	if (gpio_request(IGEP2_GPIO_DVI_PUP, "GPIO_DVI_PUP") &&
	    gpio_direction_output(IGEP2_GPIO_DVI_PUP, 1))
		pr_err("IGEP v2: Could not obtain gpio GPIO_DVI_PUP\n");
}

static struct platform_device *igep2_devices[] __initdata = {
	&igep2_dss_device,
};

static void __init igep2_init_irq(void)
{
	omap_board_config = igep2_config;
	omap_board_config_size = ARRAY_SIZE(igep2_config);
	omap2_init_common_hw(m65kxxxxam_sdrc_params, m65kxxxxam_sdrc_params);
	omap_init_irq();
	omap_gpio_init();
}

static struct twl4030_codec_audio_data igep2_audio_data = {
	.audio_mclk = 26000000,
};

static struct twl4030_codec_data igep2_codec_data = {
	.audio_mclk = 26000000,
	.audio = &igep2_audio_data,
};

static struct twl4030_platform_data igep2_twldata = {
	.irq_base	= TWL4030_IRQ_BASE,
	.irq_end	= TWL4030_IRQ_END,

	/* platform_data for children goes here */
	.usb		= &igep2_usb_data,
	.codec		= &igep2_codec_data,
	.gpio		= &igep2_twl4030_gpio_pdata,
	.vmmc1          = &igep2_vmmc1,
	.vpll2		= &igep2_vpll2,

};

static struct i2c_board_info __initdata igep2_i2c1_boardinfo[] = {
	{
		I2C_BOARD_INFO("twl4030", 0x48),
		.flags		= I2C_CLIENT_WAKE,
		.irq		= INT_34XX_SYS_NIRQ,
		.platform_data	= &igep2_twldata,
	},
};

static struct i2c_board_info __initdata igep2_i2c3_boardinfo[] = {
	{
		I2C_BOARD_INFO("eeprom", 0x50),
	},
};

static void __init igep2_i2c_init(void)
{
	int ret;

	ret = omap_register_i2c_bus(1, 2600, igep2_i2c1_boardinfo,
		ARRAY_SIZE(igep2_i2c1_boardinfo));
	if (ret)
		pr_warning("IGEP2: Could not register I2C1 bus (%d)\n", ret);

	/*
	 * Bus 3 is attached to the DVI port where devices like the pico DLP
	 * projector don't work reliably with 400kHz
	 */
	ret = omap_register_i2c_bus(3, 100, igep2_i2c3_boardinfo,
		ARRAY_SIZE(igep2_i2c3_boardinfo));
	if (ret)
		pr_warning("IGEP2: Could not register I2C3 bus (%d)\n", ret);
}

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

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

	.phy_reset = true,
	.reset_gpio_port[0] = IGEP2_GPIO_USBH_NRESET,
	.reset_gpio_port[1] = -EINVAL,
	.reset_gpio_port[2] = -EINVAL,
};

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

#if defined(CONFIG_LIBERTAS_SDIO) || defined(CONFIG_LIBERTAS_SDIO_MODULE)

static void __init igep2_wlan_bt_init(void)
{
	unsigned npd, wreset, btreset;

	/* GPIO's for WLAN-BT combo depends on hardware revision */
	if (hwrev == IGEP2_BOARD_HWREV_B) {
		npd = IGEP2_RB_GPIO_WIFI_NPD;
		wreset = IGEP2_RB_GPIO_WIFI_NRESET;
		btreset = IGEP2_RB_GPIO_BT_NRESET;
	} else if (hwrev == IGEP2_BOARD_HWREV_C) {
		npd = IGEP2_RC_GPIO_WIFI_NPD;
		wreset = IGEP2_RC_GPIO_WIFI_NRESET;
		btreset = IGEP2_RC_GPIO_BT_NRESET;
	} else
		return;

	/* Set GPIO's for  WLAN-BT combo module */
	if ((gpio_request(npd, "GPIO_WIFI_NPD") == 0) &&
	    (gpio_direction_output(npd, 1) == 0)) {
		gpio_export(npd, 0);
	} else
		pr_warning("IGEP2: Could not obtain gpio GPIO_WIFI_NPD\n");

	if ((gpio_request(wreset, "GPIO_WIFI_NRESET") == 0) &&
	    (gpio_direction_output(wreset, 1) == 0)) {
		gpio_export(wreset, 0);
		gpio_set_value(wreset, 0);
		udelay(10);
		gpio_set_value(wreset, 1);
	} else
		pr_warning("IGEP2: Could not obtain gpio GPIO_WIFI_NRESET\n");

	if ((gpio_request(btreset, "GPIO_BT_NRESET") == 0) &&
	    (gpio_direction_output(btreset, 1) == 0)) {
		gpio_export(btreset, 0);
	} else
		pr_warning("IGEP2: Could not obtain gpio GPIO_BT_NRESET\n");
}
#else
static inline void __init igep2_wlan_bt_init(void) { }
#endif

static void __init igep2_init(void)
{
	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);

	/* Get IGEP2 hardware revision */
	igep2_get_revision();
	/* Register I2C busses and drivers */
	igep2_i2c_init();
	platform_add_devices(igep2_devices, ARRAY_SIZE(igep2_devices));
	omap_serial_init();
	usb_musb_init(&musb_board_data);
	usb_ehci_init(&ehci_pdata);

	igep2_flash_init();
	igep2_leds_init();
	igep2_display_init();
	igep2_init_smsc911x();

	/*
	 * WLAN-BT combo module from MuRata wich has a Marvell WLAN
	 * (88W8686) + CSR Bluetooth chipset. Uses SDIO interface.
	 */
	igep2_wlan_bt_init();

}

MACHINE_START(IGEP0020, "IGEP v2 board")
	.boot_params	= 0x80000100,
	.map_io		= omap3_map_io,
	.reserve	= omap_reserve,
	.init_irq	= igep2_init_irq,
	.init_machine	= igep2_init,
	.timer		= &omap_timer,
MACHINE_END