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 #include "irqs.h"
  32
  33 #define AVILA_SDA_PIN   7
  34 #define AVILA_SCL_PIN   6
  35
  36 static struct flash_platform_data avila_flash_data = {
  37         .map_name       = "cfi_probe",
  38         .width          = 2,
  39 };
  40
  41 static struct resource avila_flash_resource = {
  42         .flags          = IORESOURCE_MEM,
  43 };
  44
  45 static struct platform_device avila_flash = {
  46         .name           = "IXP4XX-Flash",
  47         .id             = 0,
  48         .dev            = {
  49                 .platform_data = &avila_flash_data,
  50         },
  51         .num_resources  = 1,
  52         .resource       = &avila_flash_resource,
  53 };
  54
  55 static struct gpiod_lookup_table avila_i2c_gpiod_table = {
  56         .dev_id         = "i2c-gpio.0",
  57         .table          = {
  58                 GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", AVILA_SDA_PIN,
  59                                 NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
  60                 GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", AVILA_SCL_PIN,
  61                                 NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
  62         },
  63 };
  64
  65 static struct platform_device avila_i2c_gpio = {
  66         .name           = "i2c-gpio",
  67         .id             = 0,
  68         .dev     = {
  69                 .platform_data  = NULL,
  70         },
  71 };
  72
  73 static struct resource avila_uart_resources[] = {
  74         {
  75                 .start          = IXP4XX_UART1_BASE_PHYS,
  76                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
  77                 .flags          = IORESOURCE_MEM
  78         },
  79         {
  80                 .start          = IXP4XX_UART2_BASE_PHYS,
  81                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
  82                 .flags          = IORESOURCE_MEM
  83         }
  84 };
  85
  86 static struct plat_serial8250_port avila_uart_data[] = {
  87         {
  88                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
  89                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
  90                 .irq            = IRQ_IXP4XX_UART1,
  91                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
  92                 .iotype         = UPIO_MEM,
  93                 .regshift       = 2,
  94                 .uartclk        = IXP4XX_UART_XTAL,
  95         },
  96         {
  97                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
  98                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
  99                 .irq            = IRQ_IXP4XX_UART2,
 100                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 101                 .iotype         = UPIO_MEM,
 102                 .regshift       = 2,
 103                 .uartclk        = IXP4XX_UART_XTAL,
 104         },
 105         { },
 106 };
 107
 108 static struct platform_device avila_uart = {
 109         .name                   = "serial8250",
 110         .id                     = PLAT8250_DEV_PLATFORM,
 111         .dev.platform_data      = avila_uart_data,
 112         .num_resources          = 2,
 113         .resource               = avila_uart_resources
 114 };
 115
 116 static struct resource avila_pata_resources[] = {
 117         {
 118                 .flags  = IORESOURCE_MEM
 119         },
 120         {
 121                 .flags  = IORESOURCE_MEM,
 122         },
 123         {
 124                 .name   = "intrq",
 125                 .start  = IRQ_IXP4XX_GPIO12,
 126                 .end    = IRQ_IXP4XX_GPIO12,
 127                 .flags  = IORESOURCE_IRQ,
 128         },
 129 };
 130
 131 static struct ixp4xx_pata_data avila_pata_data = {
 132         .cs0_bits       = 0xbfff0043,
 133         .cs1_bits       = 0xbfff0043,
 134 };
 135
 136 static struct platform_device avila_pata = {
 137         .name                   = "pata_ixp4xx_cf",
 138         .id                     = 0,
 139         .dev.platform_data      = &avila_pata_data,
 140         .num_resources          = ARRAY_SIZE(avila_pata_resources),
 141         .resource               = avila_pata_resources,
 142 };
 143
 144 static struct platform_device *avila_devices[] __initdata = {
 145         &avila_i2c_gpio,
 146         &avila_flash,
 147         &avila_uart
 148 };
 149
 150 static void __init avila_init(void)
 151 {
 152         ixp4xx_sys_init();
 153
 154         avila_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 155         avila_flash_resource.end =
 156                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 157
 158         gpiod_add_lookup_table(&avila_i2c_gpiod_table);
 159
 160         platform_add_devices(avila_devices, ARRAY_SIZE(avila_devices));
 161
 162         avila_pata_resources[0].start = IXP4XX_EXP_BUS_BASE(1);
 163         avila_pata_resources[0].end = IXP4XX_EXP_BUS_END(1);
 164
 165         avila_pata_resources[1].start = IXP4XX_EXP_BUS_BASE(2);
 166         avila_pata_resources[1].end = IXP4XX_EXP_BUS_END(2);
 167
 168         avila_pata_data.cs0_cfg = IXP4XX_EXP_CS1;
 169         avila_pata_data.cs1_cfg = IXP4XX_EXP_CS2;
 170
 171         platform_device_register(&avila_pata);
 172
 173 }
 174
 175 MACHINE_START(AVILA, "Gateworks Avila Network Platform")
 176         /* Maintainer: Deepak Saxena <dsaxena@plexity.net> */
 177         .map_io         = ixp4xx_map_io,
 178         .init_early     = ixp4xx_init_early,
 179         .init_irq       = ixp4xx_init_irq,
 180         .init_time      = ixp4xx_timer_init,
 181         .atag_offset    = 0x100,
 182         .init_machine   = avila_init,
 183 #if defined(CONFIG_PCI)
 184         .dma_zone_size  = SZ_64M,
 185 #endif
 186         .restart        = ixp4xx_restart,
 187 MACHINE_END
 188
 189  /*
 190   * Loft is functionally equivalent to Avila except that it has a
 191   * different number for the maximum PCI devices.  The MACHINE
 192   * structure below is identical to Avila except for the comment.
 193   */
 194 #ifdef CONFIG_MACH_LOFT
 195 MACHINE_START(LOFT, "Giant Shoulder Inc Loft board")
 196         /* Maintainer: Tom Billman <kernel@giantshoulderinc.com> */
 197         .map_io         = ixp4xx_map_io,
 198         .init_early     = ixp4xx_init_early,
 199         .init_irq       = ixp4xx_init_irq,
 200         .init_time      = ixp4xx_timer_init,
 201         .atag_offset    = 0x100,
 202         .init_machine   = avila_init,
 203 #if defined(CONFIG_PCI)
 204         .dma_zone_size  = SZ_64M,
 205 #endif
 206         .restart        = ixp4xx_restart,
 207 MACHINE_END
 208 #endif
 209