text: // SPDX-License-Identifier: GPL-2.0
  /*
   * arch/arm/mach-ixp4xx/avila-setup.c
   *
   * Gateworks Avila board-setup
   *
   * Author: Michael-Luke Jones <mlj28@cam.ac.uk>
   *
   * Based on ixdp-setup.c
   * Copyright (C) 2003-2005 MontaVista Software, Inc.
   *
   * Author: Deepak Saxena <dsaxena@plexity.net>
   */
  
  #include <linux/kernel.h>
  #include <linux/init.h>
  #include <linux/device.h>
  #include <linux/serial.h>
  #include <linux/tty.h>
  #include <linux/serial_8250.h>
  #include <linux/gpio/machine.h>
  #include <asm/types.h>
  #include <asm/setup.h>
  #include <asm/memory.h>
  #include <mach/hardware.h>
  #include <asm/mach-types.h>
  #include <asm/irq.h>
  #include <asm/mach/arch.h>
  #include <asm/mach/flash.h>
  
  #define AVILA_SDA_PIN	7
  #define AVILA_SCL_PIN	6
  
  static struct flash_platform_data avila_flash_data = {
  	.map_name	= "cfi_probe",
  	.width		= 2,
  };
  
  static struct resource avila_flash_resource = {
  	.flags		= IORESOURCE_MEM,
  };
  
  static struct platform_device avila_flash = {
  	.name		= "IXP4XX-Flash",
  	.id		= 0,
  	.dev		= {
  		.platform_data = &avila_flash_data,
  	},
  	.num_resources	= 1,
  	.resource	= &avila_flash_resource,
  };
  
  static struct gpiod_lookup_table avila_i2c_gpiod_table = {
  	.dev_id		= "i2c-gpio.0",
  	.table		= {
  		GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", AVILA_SDA_PIN,
  				NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
  		GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", AVILA_SCL_PIN,
  				NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
  	},
  };
  
  static struct platform_device avila_i2c_gpio = {
  	.name		= "i2c-gpio",
  	.id		= 0,
  	.dev	 = {
  		.platform_data	= NULL,
  	},
  };
  
  static struct resource avila_uart_resources[] = {
  	{
  		.start		= IXP4XX_UART1_BASE_PHYS,
  		.end		= IXP4XX_UART1_BASE_PHYS + 0x0fff,
  		.flags		= IORESOURCE_MEM
  	},
  	{
  		.start		= IXP4XX_UART2_BASE_PHYS,
  		.end		= IXP4XX_UART2_BASE_PHYS + 0x0fff,
  		.flags		= IORESOURCE_MEM
  	}
  };
  
  static struct plat_serial8250_port avila_uart_data[] = {
  	{
  		.mapbase	= IXP4XX_UART1_BASE_PHYS,
  		.membase	= (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
  		.irq		= IRQ_IXP4XX_UART1,
  		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
  		.iotype		= UPIO_MEM,
  		.regshift	= 2,
  		.uartclk	= IXP4XX_UART_XTAL,
  	},
  	{
  		.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 avila_uart = {
  	.name			= "serial8250",
  	.id			= PLAT8250_DEV_PLATFORM,
  	.dev.platform_data	= avila_uart_data,
  	.num_resources		= 2,
  	.resource		= avila_uart_resources
  };
  
  static struct resource avila_pata_resources[] = {
  	{
  		.flags	= IORESOURCE_MEM
  	},
  	{
  		.flags	= IORESOURCE_MEM,
  	},
  	{
  		.name	= "intrq",
  		.start	= IRQ_IXP4XX_GPIO12,
  		.end	= IRQ_IXP4XX_GPIO12,
  		.flags	= IORESOURCE_IRQ,
  	},
  };
  
  static struct ixp4xx_pata_data avila_pata_data = {
  	.cs0_bits	= 0xbfff0043,
  	.cs1_bits	= 0xbfff0043,
  };
  
  static struct platform_device avila_pata = {
  	.name			= "pata_ixp4xx_cf",
  	.id			= 0,
  	.dev.platform_data      = &avila_pata_data,
  	.num_resources		= ARRAY_SIZE(avila_pata_resources),
  	.resource		= avila_pata_resources,
  };
  
  static struct platform_device *avila_devices[] __initdata = {
  	&avila_i2c_gpio,
  	&avila_flash,
  	&avila_uart
  };
  
  static void __init avila_init(void)
  {
  	ixp4xx_sys_init();
  
  	avila_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
  	avila_flash_resource.end =
  		IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
  
  	gpiod_add_lookup_table(&avila_i2c_gpiod_table);
  
  	platform_add_devices(avila_devices, ARRAY_SIZE(avila_devices));
  
  	avila_pata_resources[0].start = IXP4XX_EXP_BUS_BASE(1);
  	avila_pata_resources[0].end = IXP4XX_EXP_BUS_END(1);
  
  	avila_pata_resources[1].start = IXP4XX_EXP_BUS_BASE(2);
  	avila_pata_resources[1].end = IXP4XX_EXP_BUS_END(2);
  
  	avila_pata_data.cs0_cfg = IXP4XX_EXP_CS1;
  	avila_pata_data.cs1_cfg = IXP4XX_EXP_CS2;
  
  	platform_device_register(&avila_pata);
  
  }
  
  MACHINE_START(AVILA, "Gateworks Avila Network Platform")
  	/* Maintainer: Deepak Saxena <dsaxena@plexity.net> */
  	.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	= avila_init,
  #if defined(CONFIG_PCI)
  	.dma_zone_size	= SZ_64M,
  #endif
  	.restart	= ixp4xx_restart,
  MACHINE_END
  
   /*
    * Loft is functionally equivalent to Avila except that it has a
    * different number for the maximum PCI devices.  The MACHINE
    * structure below is identical to Avila except for the comment.
    */
  #ifdef CONFIG_MACH_LOFT
  MACHINE_START(LOFT, "Giant Shoulder Inc Loft board")
  	/* Maintainer: Tom Billman <kernel@giantshoulderinc.com> */
  	.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	= avila_init,
  #if defined(CONFIG_PCI)
  	.dma_zone_size	= SZ_64M,
  #endif
  	.restart	= ixp4xx_restart,
  MACHINE_END
  #endif
  
  