/*
   * linux/arch/arm/mach-omap2/board-omap3touchbook.c
   *
   * Copyright (C) 2009 Always Innovating
   *
   * Modified from mach-omap2/board-omap3beagleboard.c
   *
   * Initial code: Grégoire Gentil, Tim Yamin
   *
   * 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/leds.h>
  #include <linux/gpio.h>
  #include <linux/input.h>
  #include <linux/gpio_keys.h>
  
  #include <linux/mtd/mtd.h>
  #include <linux/mtd/partitions.h>
  #include <linux/mtd/nand.h>

  #include <linux/mmc/host.h>

  
  #include <plat/mcspi.h>
  #include <linux/spi/spi.h>
  
  #include <linux/spi/ads7846.h>
  
  #include <linux/regulator/machine.h>

  #include <linux/i2c/twl.h>

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

  #include "common.h"

  #include <plat/gpmc.h>
  #include <plat/nand.h>
  #include <plat/usb.h>

  
  #include "mux.h"

  #include "hsmmc.h"

  #include "common-board-devices.h"

  
  #include <asm/setup.h>

  #define OMAP3_AC_GPIO		136
  #define OMAP3_TS_GPIO		162
  #define TB_BL_PWM_TIMER		9
  #define TB_KILL_POWER_GPIO	168

  static unsigned long touchbook_revision;

  
  static struct mtd_partition omap3touchbook_nand_partitions[] = {
  	/* All the partition sizes are listed in terms of NAND block size */
  	{
  		.name		= "X-Loader",
  		.offset		= 0,
  		.size		= 4 * NAND_BLOCK_SIZE,
  		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
  	},
  	{
  		.name		= "U-Boot",
  		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
  		.size		= 15 * NAND_BLOCK_SIZE,
  		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
  	},
  	{
  		.name		= "U-Boot Env",
  		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x260000 */
  		.size		= 1 * NAND_BLOCK_SIZE,
  	},
  	{
  		.name		= "Kernel",
  		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x280000 */
  		.size		= 32 * NAND_BLOCK_SIZE,
  	},
  	{
  		.name		= "File System",
  		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x680000 */
  		.size		= MTDPART_SIZ_FULL,
  	},
  };

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

  static struct omap2_hsmmc_info mmc[] = {

  	{
  		.mmc		= 1,

  		.caps		= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,

  		.gpio_wp	= 29,
  	},
  	{}	/* Terminator */
  };

  static struct regulator_consumer_supply touchbook_vmmc1_supply[] = {
  	REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),

  };

  static struct regulator_consumer_supply touchbook_vsim_supply[] = {
  	REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),

  };
  
  static struct gpio_led gpio_leds[];
  
  static int touchbook_twl_gpio_setup(struct device *dev,
  		unsigned gpio, unsigned ngpio)
  {
  	if (system_rev >= 0x20 && system_rev <= 0x34301000) {
  		omap_mux_init_gpio(23, OMAP_PIN_INPUT);
  		mmc[0].gpio_wp = 23;
  	} else {
  		omap_mux_init_gpio(29, OMAP_PIN_INPUT);
  	}
  	/* gpio + 0 is "mmc0_cd" (input/IRQ) */
  	mmc[0].gpio_cd = gpio + 0;

  	omap2_hsmmc_init(mmc);

  	/* REVISIT: need ehci-omap hooks for external VBUS
  	 * power switch and overcurrent detect
  	 */

  	gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC");

  
  	/* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */

  	gpio_request_one(gpio + TWL4030_GPIO_MAX, GPIOF_OUT_INIT_LOW,
  			 "nEN_USB_PWR");

  
  	/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
  	gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
  
  	return 0;
  }
  
  static struct twl4030_gpio_platform_data touchbook_gpio_data = {
  	.gpio_base	= OMAP_MAX_GPIO_LINES,
  	.irq_base	= TWL4030_GPIO_IRQ_BASE,
  	.irq_end	= TWL4030_GPIO_IRQ_END,
  	.use_leds	= true,
  	.pullups	= BIT(1),
  	.pulldowns	= BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
  				| BIT(15) | BIT(16) | BIT(17),
  	.setup		= touchbook_twl_gpio_setup,
  };

  static struct regulator_consumer_supply touchbook_vdac_supply[] = {
  {

  	.supply		= "vdac",

  },

  };

  static struct regulator_consumer_supply touchbook_vdvi_supply[] = {
  {

  	.supply		= "vdvi",

  },

  };
  
  /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
  static struct regulator_init_data touchbook_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	= ARRAY_SIZE(touchbook_vmmc1_supply),
  	.consumer_supplies	= touchbook_vmmc1_supply,

  };
  
  /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
  static struct regulator_init_data touchbook_vsim = {
  	.constraints = {
  		.min_uV			= 1800000,
  		.max_uV			= 3000000,
  		.valid_modes_mask	= REGULATOR_MODE_NORMAL
  					| REGULATOR_MODE_STANDBY,
  		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
  					| REGULATOR_CHANGE_MODE
  					| REGULATOR_CHANGE_STATUS,
  	},

  	.num_consumer_supplies	= ARRAY_SIZE(touchbook_vsim_supply),
  	.consumer_supplies	= touchbook_vsim_supply,

  };

  static struct twl4030_platform_data touchbook_twldata = {

  	/* platform_data for children goes here */

  	.gpio		= &touchbook_gpio_data,

  	.vmmc1		= &touchbook_vmmc1,
  	.vsim		= &touchbook_vsim,

  };

  static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
  	{
  		I2C_BOARD_INFO("bq27200", 0x55),
  	},
  };
  
  static int __init omap3_touchbook_i2c_init(void)
  {
  	/* Standard TouchBook bus */

  	omap3_pmic_get_config(&touchbook_twldata,

  			TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
  			TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
  
  	touchbook_twldata.vdac->num_consumer_supplies =
  					ARRAY_SIZE(touchbook_vdac_supply);
  	touchbook_twldata.vdac->consumer_supplies = touchbook_vdac_supply;
  
  	touchbook_twldata.vpll2->constraints.name = "VDVI";
  	touchbook_twldata.vpll2->num_consumer_supplies =
  					ARRAY_SIZE(touchbook_vdvi_supply);
  	touchbook_twldata.vpll2->consumer_supplies = touchbook_vdvi_supply;

  	omap3_pmic_init("twl4030", &touchbook_twldata);

  	/* Additional TouchBook bus */
  	omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
  			ARRAY_SIZE(touchBook_i2c_boardinfo));
  
  	return 0;
  }

  static struct ads7846_platform_data ads7846_pdata = {

  	.x_min			= 100,
  	.y_min			= 265,
  	.x_max			= 3950,
  	.y_max			= 3750,
  	.x_plate_ohms		= 40,
  	.pressure_max		= 255,
  	.debounce_max		= 10,
  	.debounce_tol		= 5,
  	.debounce_rep		= 1,
  	.gpio_pendown		= OMAP3_TS_GPIO,
  	.keep_vref_on		= 1,
  };

  static struct gpio_led gpio_leds[] = {
  	{
  		.name			= "touchbook::usr0",
  		.default_trigger	= "heartbeat",
  		.gpio			= 150,
  	},
  	{
  		.name			= "touchbook::usr1",
  		.default_trigger	= "mmc0",
  		.gpio			= 149,
  	},
  	{
  		.name			= "touchbook::pmu_stat",
  		.gpio			= -EINVAL,	/* gets replaced */
  		.active_low		= true,
  	},
  };
  
  static struct gpio_led_platform_data gpio_led_info = {
  	.leds		= gpio_leds,
  	.num_leds	= ARRAY_SIZE(gpio_leds),
  };
  
  static struct platform_device leds_gpio = {
  	.name	= "leds-gpio",
  	.id	= -1,
  	.dev	= {
  		.platform_data	= &gpio_led_info,
  	},
  };
  
  static struct gpio_keys_button gpio_buttons[] = {
  	{
  		.code			= BTN_EXTRA,
  		.gpio			= 7,
  		.desc			= "user",
  		.wakeup			= 1,
  	},
  	{
  		.code			= KEY_POWER,
  		.gpio			= 183,
  		.desc			= "power",
  		.wakeup			= 1,
  	},
  };
  
  static struct gpio_keys_platform_data gpio_key_info = {
  	.buttons	= gpio_buttons,
  	.nbuttons	= ARRAY_SIZE(gpio_buttons),
  };
  
  static struct platform_device keys_gpio = {
  	.name	= "gpio-keys",
  	.id	= -1,
  	.dev	= {
  		.platform_data	= &gpio_key_info,
  	},
  };

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

  #endif

  static struct platform_device *omap3_touchbook_devices[] __initdata = {

  	&leds_gpio,
  	&keys_gpio,
  };

  static const struct usbhs_omap_board_data usbhs_bdata __initconst = {

  	.port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
  	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
  	.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,

  
  	.phy_reset  = true,
  	.reset_gpio_port[0]  = -EINVAL,
  	.reset_gpio_port[1]  = 147,
  	.reset_gpio_port[2]  = -EINVAL
  };
  
  static void omap3_touchbook_poweroff(void)
  {

  	int pwr_off = TB_KILL_POWER_GPIO;

  	if (gpio_request_one(pwr_off, GPIOF_OUT_INIT_LOW, "DVI reset") < 0)

  		printk(KERN_ERR "Unable to get kill power GPIO
  ");

  }

  static int __init early_touchbook_revision(char *p)

  {

  	if (!p)
  		return 0;

  	return strict_strtoul(p, 10, &touchbook_revision);

  }

  early_param("tbr", early_touchbook_revision);

  
  static void __init omap3_touchbook_init(void)
  {

  	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);

  	pm_power_off = omap3_touchbook_poweroff;
  
  	omap3_touchbook_i2c_init();
  	platform_add_devices(omap3_touchbook_devices,
  			ARRAY_SIZE(omap3_touchbook_devices));
  	omap_serial_init();

  	omap_sdrc_init(mt46h32m32lf6_sdrc_params,
  				  mt46h32m32lf6_sdrc_params);

  
  	omap_mux_init_gpio(170, OMAP_PIN_INPUT);

  	/* REVISIT leave DVI powered down until it's needed ... */

  	gpio_request_one(176, GPIOF_OUT_INIT_HIGH, "DVI_nPD");

  
  	/* Touchscreen and accelerometer */

  	omap_ads7846_init(4, OMAP3_TS_GPIO, 310, &ads7846_pdata);

  	usb_musb_init(NULL);

  	usbhs_init(&usbhs_bdata);

  	omap_nand_flash_init(NAND_BUSWIDTH_16, omap3touchbook_nand_partitions,
  			     ARRAY_SIZE(omap3touchbook_nand_partitions));

  
  	/* 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);
  }

  MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
  	/* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */

  	.atag_offset	= 0x100,

  	.reserve	= omap_reserve,

  	.map_io		= omap3_map_io,

  	.init_early	= omap3430_init_early,

  	.init_irq	= omap3_init_irq,

  	.handle_irq	= omap3_intc_handle_irq,

  	.init_machine	= omap3_touchbook_init,

  	.timer		= &omap3_secure_timer,

  	.restart	= omap_prcm_restart,

  MACHINE_END