/*

   * linux/arch/arm/mach-at91/board-usb-a926x.c

   *
   *  Copyright (C) 2005 SAN People
   *  Copyright (C) 2007 Atmel Corporation.
   *  Copyright (C) 2007 Calao-systems

   *  Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

   *
   * 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.
   *
   * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  #include <linux/types.h>
  #include <linux/init.h>
  #include <linux/mm.h>
  #include <linux/module.h>
  #include <linux/platform_device.h>
  #include <linux/spi/spi.h>
  #include <linux/gpio_keys.h>

  #include <linux/gpio.h>

  #include <linux/input.h>

  #include <linux/spi/mmc_spi.h>

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

  #include <mach/hardware.h>

  #include <mach/board.h>

  #include <mach/at91sam9_smc.h>

  #include <mach/at91_shdwc.h>

  #include "sam9_smc.h"

  #include "generic.h"

  static void __init ek_init_early(void)

  {
  	/* Initialize processor: 12.00 MHz crystal */

  	at91_initialize(12000000);

  	/* DBGU on ttyS0. (Rx & Tx only) */

  	at91_register_uart(0, 0, 0);
  
  	/* set serial console to ttyS0 (ie, DBGU) */
  	at91_set_serial_console(0);
  }

  /*
   * USB Host port
   */
  static struct at91_usbh_data __initdata ek_usbh_data = {
  	.ports		= 2,

  	.vbus_pin	= {-EINVAL, -EINVAL},
  	.overcurrent_pin= {-EINVAL, -EINVAL},

  };
  
  /*
   * USB Device port
   */
  static struct at91_udc_data __initdata ek_udc_data = {
  	.vbus_pin	= AT91_PIN_PB11,

  	.pullup_pin	= -EINVAL,		/* pull-up driven by UDC */

  };

  static void __init ek_add_device_udc(void)

  {

  	if (machine_is_usb_a9260() || machine_is_usb_a9g20())

  		ek_udc_data.vbus_pin = AT91_PIN_PC5;
  
  	at91_add_device_udc(&ek_udc_data);
  }

  #if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
  #define MMC_SPI_CARD_DETECT_INT AT91_PIN_PC4
  static int at91_mmc_spi_init(struct device *dev,
  	irqreturn_t (*detect_int)(int, void *), void *data)
  {
  	/* Configure Interrupt pin as input, no pull-up */
  	at91_set_gpio_input(MMC_SPI_CARD_DETECT_INT, 0);
  	return request_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), detect_int,
  		IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
  		"mmc-spi-detect", data);
  }
  
  static void at91_mmc_spi_exit(struct device *dev, void *data)
  {
  	free_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), data);
  }
  
  static struct mmc_spi_platform_data at91_mmc_spi_pdata = {
  	.init = at91_mmc_spi_init,
  	.exit = at91_mmc_spi_exit,
  	.detect_delay = 100, /* msecs */
  };
  #endif

  /*
   * SPI devices.
   */

  static struct spi_board_info usb_a9263_spi_devices[] = {

  #if !defined(CONFIG_MMC_AT91)
  	{	/* DataFlash chip */
  		.modalias	= "mtd_dataflash",
  		.chip_select	= 0,
  		.max_speed_hz	= 15 * 1000 * 1000,
  		.bus_num	= 0,
  	}
  #endif
  };

  static struct spi_board_info usb_a9g20_spi_devices[] = {
  #if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
  	{
  		.modalias = "mmc_spi",
  		.max_speed_hz = 20000000,	/* max spi clock (SCK) speed in HZ */
  		.bus_num = 1,
  		.chip_select = 0,
  		.platform_data = &at91_mmc_spi_pdata,
  		.mode = SPI_MODE_3,
  	},
  #endif
  };
  
  static void __init ek_add_device_spi(void)

  {
  	if (machine_is_usb_a9263())

  		at91_add_device_spi(usb_a9263_spi_devices, ARRAY_SIZE(usb_a9263_spi_devices));
  	else if (machine_is_usb_a9g20())
  		at91_add_device_spi(usb_a9g20_spi_devices, ARRAY_SIZE(usb_a9g20_spi_devices));

  }

  /*
   * MACB Ethernet device
   */

  static struct macb_platform_data __initdata ek_macb_data = {

  	.phy_irq_pin	= AT91_PIN_PE31,
  	.is_rmii	= 1,
  };

  static void __init ek_add_device_eth(void)

  {

  	if (machine_is_usb_a9260() || machine_is_usb_a9g20())

  		ek_macb_data.phy_irq_pin = AT91_PIN_PA31;
  
  	at91_add_device_eth(&ek_macb_data);
  }

  /*
   * NAND flash
   */
  static struct mtd_partition __initdata ek_nand_partition[] = {
  	{

  		.name	= "barebox",

  		.offset	= 0,

  		.size	= 3 * SZ_128K,
  	}, {
  		.name	= "bareboxenv",

  		.offset	= MTDPART_OFS_NXTBLK,

  		.size	= SZ_128K,
  	}, {
  		.name	= "bareboxenv2",
  		.offset	= MTDPART_OFS_NXTBLK,
  		.size	= SZ_128K,
  	}, {
  		.name	= "kernel",
  		.offset	= MTDPART_OFS_NXTBLK,
  		.size	= 4 * SZ_1M,
  	}, {
  		.name	= "rootfs",

  		.offset	= MTDPART_OFS_NXTBLK,
  		.size	= 120 * SZ_1M,

  	}, {
  		.name	= "data",
  		.offset	= MTDPART_OFS_NXTBLK,
  		.size	= MTDPART_SIZ_FULL,

  	}
  };

  static struct atmel_nand_data __initdata ek_nand_data = {

  	.ale		= 21,
  	.cle		= 22,

  	.det_pin	= -EINVAL,

  	.rdy_pin	= AT91_PIN_PA22,
  	.enable_pin	= AT91_PIN_PD15,

  	.parts		= ek_nand_partition,
  	.num_parts	= ARRAY_SIZE(ek_nand_partition),

  };

  static struct sam9_smc_config __initdata usb_a9260_nand_smc_config = {

  	.ncs_read_setup		= 0,
  	.nrd_setup		= 1,
  	.ncs_write_setup	= 0,
  	.nwe_setup		= 1,
  
  	.ncs_read_pulse		= 3,
  	.nrd_pulse		= 3,
  	.ncs_write_pulse	= 3,
  	.nwe_pulse		= 3,
  
  	.read_cycle		= 5,
  	.write_cycle		= 5,
  
  	.mode			= AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
  	.tdf_cycles		= 2,
  };

  static struct sam9_smc_config __initdata usb_a9g20_nand_smc_config = {
  	.ncs_read_setup		= 0,
  	.nrd_setup		= 2,
  	.ncs_write_setup	= 0,
  	.nwe_setup		= 2,
  
  	.ncs_read_pulse		= 4,
  	.nrd_pulse		= 4,
  	.ncs_write_pulse	= 4,
  	.nwe_pulse		= 4,
  
  	.read_cycle		= 7,
  	.write_cycle		= 7,
  
  	.mode			= AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
  	.tdf_cycles		= 3,
  };

  static void __init ek_add_device_nand(void)
  {

  	if (machine_is_usb_a9260() || machine_is_usb_a9g20()) {

  		ek_nand_data.rdy_pin	= AT91_PIN_PC13;
  		ek_nand_data.enable_pin	= AT91_PIN_PC14;
  	}

  	/* configure chip-select 3 (NAND) */

  	if (machine_is_usb_a9g20())

  		sam9_smc_configure(0, 3, &usb_a9g20_nand_smc_config);

  	else

  		sam9_smc_configure(0, 3, &usb_a9260_nand_smc_config);

  
  	at91_add_device_nand(&ek_nand_data);
  }

  /*
   * GPIO Buttons
   */
  #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
  static struct gpio_keys_button ek_buttons[] = {
  	{	/* USER PUSH BUTTON */
  		.code		= KEY_ENTER,
  		.gpio		= AT91_PIN_PB10,
  		.active_low	= 1,
  		.desc		= "user_pb",
  		.wakeup		= 1,
  	}
  };
  
  static struct gpio_keys_platform_data ek_button_data = {
  	.buttons	= ek_buttons,
  	.nbuttons	= ARRAY_SIZE(ek_buttons),
  };
  
  static struct platform_device ek_button_device = {
  	.name		= "gpio-keys",
  	.id		= -1,
  	.num_resources	= 0,
  	.dev		= {
  		.platform_data	= &ek_button_data,
  	}
  };
  
  static void __init ek_add_device_buttons(void)
  {
  	at91_set_GPIO_periph(AT91_PIN_PB10, 1);	/* user push button, pull up enabled */
  	at91_set_deglitch(AT91_PIN_PB10, 1);
  
  	platform_device_register(&ek_button_device);
  }
  #else
  static void __init ek_add_device_buttons(void) {}
  #endif
  
  /*
   * LEDs
   */
  static struct gpio_led ek_leds[] = {
  	{	/* user_led (green) */
  		.name			= "user_led",
  		.gpio			= AT91_PIN_PB21,
  		.active_low		= 1,
  		.default_trigger	= "heartbeat",
  	}
  };

  static struct i2c_board_info __initdata ek_i2c_devices[] = {
  	{
  		I2C_BOARD_INFO("rv3029c2", 0x56),
  	},
  };
  
  static void __init ek_add_device_leds(void)

  {

  	if (machine_is_usb_a9260() || machine_is_usb_a9g20())

  		ek_leds[0].active_low = 0;
  
  	at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
  }

  static void __init ek_board_init(void)
  {
  	/* Serial */
  	at91_add_device_serial();
  	/* USB Host */
  	at91_add_device_usbh(&ek_usbh_data);
  	/* USB Device */

  	ek_add_device_udc();

  	/* SPI */

  	ek_add_device_spi();

  	/* Ethernet */

  	ek_add_device_eth();

  	/* NAND */

  	ek_add_device_nand();

  	/* Push Buttons */
  	ek_add_device_buttons();
  	/* LEDs */

  	ek_add_device_leds();

  
  	if (machine_is_usb_a9g20()) {
  		/* I2C */
  		at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
  	} else {
  		/* I2C */
  		at91_add_device_i2c(NULL, 0);
  		/* shutdown controller, wakeup button (5 msec low) */

  		at91_shdwc_write(AT91_SHDW_MR, AT91_SHDW_CPTWK0_(10)

  				| AT91_SHDW_WKMODE0_LOW

  				| AT91_SHDW_RTTWKEN);

  	}

  }
  
  MACHINE_START(USB_A9263, "CALAO USB_A9263")
  	/* Maintainer: calao-systems */

  	.timer		= &at91sam926x_timer,

  	.map_io		= at91_map_io,

  	.init_early	= ek_init_early,

  	.init_irq	= at91_init_irq_default,

  	.init_machine	= ek_board_init,
  MACHINE_END

  
  MACHINE_START(USB_A9260, "CALAO USB_A9260")
  	/* Maintainer: calao-systems */
  	.timer		= &at91sam926x_timer,
  	.map_io		= at91_map_io,
  	.init_early	= ek_init_early,
  	.init_irq	= at91_init_irq_default,
  	.init_machine	= ek_board_init,
  MACHINE_END

  
  MACHINE_START(USB_A9G20, "CALAO USB_A92G0")
  	/* Maintainer: Jean-Christophe PLAGNIOL-VILLARD */
  	.timer		= &at91sam926x_timer,
  	.map_io		= at91_map_io,
  	.init_early	= ek_init_early,
  	.init_irq	= at91_init_irq_default,
  	.init_machine	= ek_board_init,
  MACHINE_END