arch/arm/mach-ixp4xx/avila-setup.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * arch/arm/mach-ixp4xx/avila-setup.c
   4  *
   5  * Gateworks Avila board-setup
   6  *
   7  * Author: Michael-Luke Jones <mlj28@cam.ac.uk>
   8  *
   9  * Based on ixdp-setup.c
  10  * Copyright (C) 2003-2005 MontaVista Software, Inc.
  11  *
  12  * Author: Deepak Saxena <dsaxena@plexity.net>
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/device.h>
  18 #include <linux/serial.h>
  19 #include <linux/tty.h>
  20 #include <linux/serial_8250.h>
  21 #include <linux/gpio/machine.h>
  22 #include <asm/types.h>
  23 #include <asm/setup.h>
  24 #include <asm/memory.h>
  25 #include <mach/hardware.h>
  26 #include <asm/mach-types.h>
  27 #include <asm/irq.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/flash.h>
  30
  31 #define AVILA_SDA_PIN   7
  32 #define AVILA_SCL_PIN   6
  33
  34 static struct flash_platform_data avila_flash_data = {
  35         .map_name       = "cfi_probe",
  36         .width          = 2,
  37 };
  38
  39 static struct resource avila_flash_resource = {
  40         .flags          = IORESOURCE_MEM,
  41 };
  42
  43 static struct platform_device avila_flash = {
  44         .name           = "IXP4XX-Flash",
  45         .id             = 0,
  46         .dev            = {
  47                 .platform_data = &avila_flash_data,
  48         },
  49         .num_resources  = 1,
  50         .resource       = &avila_flash_resource,
  51 };
  52
  53 static struct gpiod_lookup_table avila_i2c_gpiod_table = {
  54         .dev_id         = "i2c-gpio.0",
  55         .table          = {
  56                 GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", AVILA_SDA_PIN,
  57                                 NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
  58                 GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", AVILA_SCL_PIN,
  59                                 NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
  60         },
  61 };
  62
  63 static struct platform_device avila_i2c_gpio = {
  64         .name           = "i2c-gpio",
  65         .id             = 0,
  66         .dev     = {
  67                 .platform_data  = NULL,
  68         },
  69 };
  70
  71 static struct resource avila_uart_resources[] = {
  72         {
  73                 .start          = IXP4XX_UART1_BASE_PHYS,
  74                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
  75                 .flags          = IORESOURCE_MEM
  76         },
  77         {
  78                 .start          = IXP4XX_UART2_BASE_PHYS,
  79                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
  80                 .flags          = IORESOURCE_MEM
  81         }
  82 };
  83
  84 static struct plat_serial8250_port avila_uart_data[] = {
  85         {
  86                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
  87                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
  88                 .irq            = IRQ_IXP4XX_UART1,
  89                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
  90                 .iotype         = UPIO_MEM,
  91                 .regshift       = 2,
  92                 .uartclk        = IXP4XX_UART_XTAL,
  93         },
  94         {
  95                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
  96                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
  97                 .irq            = IRQ_IXP4XX_UART2,
  98                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
  99                 .iotype         = UPIO_MEM,
 100                 .regshift       = 2,
 101                 .uartclk        = IXP4XX_UART_XTAL,
 102         },
 103         { },
 104 };
 105
 106 static struct platform_device avila_uart = {
 107         .name                   = "serial8250",
 108         .id                     = PLAT8250_DEV_PLATFORM,
 109         .dev.platform_data      = avila_uart_data,
 110         .num_resources          = 2,
 111         .resource               = avila_uart_resources
 112 };
 113
 114 static struct resource avila_pata_resources[] = {
 115         {
 116                 .flags  = IORESOURCE_MEM
 117         },
 118         {
 119                 .flags  = IORESOURCE_MEM,
 120         },
 121         {
 122                 .name   = "intrq",
 123                 .start  = IRQ_IXP4XX_GPIO12,
 124                 .end    = IRQ_IXP4XX_GPIO12,
 125                 .flags  = IORESOURCE_IRQ,
 126         },
 127 };
 128
 129 static struct ixp4xx_pata_data avila_pata_data = {
 130         .cs0_bits       = 0xbfff0043,
 131         .cs1_bits       = 0xbfff0043,
 132 };
 133
 134 static struct platform_device avila_pata = {
 135         .name                   = "pata_ixp4xx_cf",
 136         .id                     = 0,
 137         .dev.platform_data      = &avila_pata_data,
 138         .num_resources          = ARRAY_SIZE(avila_pata_resources),
 139         .resource               = avila_pata_resources,
 140 };
 141
 142 static struct platform_device *avila_devices[] __initdata = {
 143         &avila_i2c_gpio,
 144         &avila_flash,
 145         &avila_uart
 146 };
 147
 148 static void __init avila_init(void)
 149 {
 150         ixp4xx_sys_init();
 151
 152         avila_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 153         avila_flash_resource.end =
 154                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 155
 156         gpiod_add_lookup_table(&avila_i2c_gpiod_table);
 157
 158         platform_add_devices(avila_devices, ARRAY_SIZE(avila_devices));
 159
 160         avila_pata_resources[0].start = IXP4XX_EXP_BUS_BASE(1);
 161         avila_pata_resources[0].end = IXP4XX_EXP_BUS_END(1);
 162
 163         avila_pata_resources[1].start = IXP4XX_EXP_BUS_BASE(2);
 164         avila_pata_resources[1].end = IXP4XX_EXP_BUS_END(2);
 165
 166         avila_pata_data.cs0_cfg = IXP4XX_EXP_CS1;
 167         avila_pata_data.cs1_cfg = IXP4XX_EXP_CS2;
 168
 169         platform_device_register(&avila_pata);
 170
 171 }
 172
 173 MACHINE_START(AVILA, "Gateworks Avila Network Platform")
 174         /* Maintainer: Deepak Saxena <dsaxena@plexity.net> */
 175         .map_io         = ixp4xx_map_io,
 176         .init_early     = ixp4xx_init_early,
 177         .init_irq       = ixp4xx_init_irq,
 178         .init_time      = ixp4xx_timer_init,
 179         .atag_offset    = 0x100,
 180         .init_machine   = avila_init,
 181 #if defined(CONFIG_PCI)
 182         .dma_zone_size  = SZ_64M,
 183 #endif
 184         .restart        = ixp4xx_restart,
 185 MACHINE_END
 186
 187  /*
 188   * Loft is functionally equivalent to Avila except that it has a
 189   * different number for the maximum PCI devices.  The MACHINE
 190   * structure below is identical to Avila except for the comment.
 191   */
 192 #ifdef CONFIG_MACH_LOFT
 193 MACHINE_START(LOFT, "Giant Shoulder Inc Loft board")
 194         /* Maintainer: Tom Billman <kernel@giantshoulderinc.com> */
 195         .map_io         = ixp4xx_map_io,
 196         .init_early     = ixp4xx_init_early,
 197         .init_irq       = ixp4xx_init_irq,
 198         .init_time      = ixp4xx_timer_init,
 199         .atag_offset    = 0x100,
 200         .init_machine   = avila_init,
 201 #if defined(CONFIG_PCI)
 202         .dma_zone_size  = SZ_64M,
 203 #endif
 204         .restart        = ixp4xx_restart,
 205 MACHINE_END
 206 #endif
 207