/*
   * arch/arm/mach-ixp4xx/gtwx5715-setup.c
   *
   * Gemtek GTWX5715 (Linksys WRV54G) board setup
   *
   * Copyright (C) 2004 George T. Joseph
   * Derived from Coyote
   *
   * 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/init.h>
  #include <linux/device.h>
  #include <linux/serial.h>
  #include <linux/tty.h>
  #include <linux/serial_8250.h>
  #include <asm/types.h>
  #include <asm/setup.h>
  #include <asm/memory.h>
  #include <mach/hardware.h>
  #include <asm/irq.h>
  #include <asm/mach-types.h>
  #include <asm/mach/arch.h>
  #include <asm/mach/flash.h>
  
  /* GPIO 5,6,7 and 12 are hard wired to the Kendin KS8995M Switch
     and operate as an SPI type interface.  The details of the interface
     are available on Kendin/Micrel's web site. */
  
  #define GTWX5715_KSSPI_SELECT	5
  #define GTWX5715_KSSPI_TXD	6
  #define GTWX5715_KSSPI_CLOCK	7
  #define GTWX5715_KSSPI_RXD	12
  
  /* The "reset" button is wired to GPIO 3.
     The GPIO is brought "low" when the button is pushed. */
  
  #define GTWX5715_BUTTON_GPIO	3
  
  /* Board Label      Front Label
     LED1             Power
     LED2             Wireless-G
     LED3             not populated but could be
     LED4             Internet
     LED5 - LED8      Controlled by KS8995M Switch
     LED9             DMZ */
  
  #define GTWX5715_LED1_GPIO	2
  #define GTWX5715_LED2_GPIO	9
  #define GTWX5715_LED3_GPIO	8
  #define GTWX5715_LED4_GPIO	1
  #define GTWX5715_LED9_GPIO	4
  
  /*
   * Xscale UART registers are 32 bits wide with only the least
   * significant 8 bits having any meaning.  From a configuration
   * perspective, this means 2 things...
   *
   *   Setting .regshift = 2 so that the standard 16550 registers
   *   line up on every 4th byte.
   *
   *   Shifting the register start virtual address +3 bytes when
   *   compiled big-endian.  Since register writes are done on a
   *   single byte basis, if the shift isn't done the driver will
   *   write the value into the most significant byte of the register,
   *   which is ignored, instead of the least significant.
   */
  
  #ifdef	__ARMEB__
  #define	REG_OFFSET	3
  #else
  #define	REG_OFFSET	0
  #endif
  
  /*
   * Only the second or "console" uart is connected on the gtwx5715.
   */
  
  static struct resource gtwx5715_uart_resources[] = {
  	{
  		.start	= IXP4XX_UART2_BASE_PHYS,
  		.end	= IXP4XX_UART2_BASE_PHYS + 0x0fff,
  		.flags	= IORESOURCE_MEM,
  	},
  	{
  		.start	= IRQ_IXP4XX_UART2,
  		.end	= IRQ_IXP4XX_UART2,
  		.flags	= IORESOURCE_IRQ,
  	},
  	{ },
  };
  
  
  static struct plat_serial8250_port gtwx5715_uart_platform_data[] = {
  	{
  	.mapbase	= IXP4XX_UART2_BASE_PHYS,
  	.membase	= (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
  	.irq		= IRQ_IXP4XX_UART2,
  	.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
  	.iotype		= UPIO_MEM,
  	.regshift	= 2,
  	.uartclk	= IXP4XX_UART_XTAL,
  	},
  	{ },
  };
  
  static struct platform_device gtwx5715_uart_device = {
  	.name		= "serial8250",
  	.id		= PLAT8250_DEV_PLATFORM,
  	.dev			= {
  		.platform_data	= gtwx5715_uart_platform_data,
  	},
  	.num_resources	= 2,
  	.resource	= gtwx5715_uart_resources,
  };
  
  static struct flash_platform_data gtwx5715_flash_data = {
  	.map_name	= "cfi_probe",
  	.width		= 2,
  };
  
  static struct resource gtwx5715_flash_resource = {
  	.flags		= IORESOURCE_MEM,
  };
  
  static struct platform_device gtwx5715_flash = {
  	.name		= "IXP4XX-Flash",
  	.id		= 0,
  	.dev		= {
  		.platform_data = &gtwx5715_flash_data,
  	},
  	.num_resources	= 1,
  	.resource	= &gtwx5715_flash_resource,
  };
  
  static struct platform_device *gtwx5715_devices[] __initdata = {
  	&gtwx5715_uart_device,
  	&gtwx5715_flash,
  };
  
  static void __init gtwx5715_init(void)
  {
  	ixp4xx_sys_init();
  
  	gtwx5715_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
  	gtwx5715_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + SZ_8M - 1;
  
  	platform_add_devices(gtwx5715_devices, ARRAY_SIZE(gtwx5715_devices));
  }
  
  
  MACHINE_START(GTWX5715, "Gemtek GTWX5715 (Linksys WRV54G)")
  	/* Maintainer: George Joseph */
  	.map_io		= ixp4xx_map_io,
  	.init_early	= ixp4xx_init_early,
  	.init_irq	= ixp4xx_init_irq,
  	.init_time	= ixp4xx_timer_init,
  	.atag_offset	= 0x100,
  	.init_machine	= gtwx5715_init,
  #if defined(CONFIG_PCI)
  	.dma_zone_size	= SZ_64M,
  #endif
  	.restart	= ixp4xx_restart,
  MACHINE_END