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 <linux/platform_data/pata_ixp4xx_cf.h>
  23 #include <asm/types.h>
  24 #include <asm/setup.h>
  25 #include <asm/memory.h>
  26 #include <mach/hardware.h>
  27 #include <asm/mach-types.h>
  28 #include <asm/irq.h>
  29 #include <asm/mach/arch.h>
  30 #include <asm/mach/flash.h>
  31
  32 #include "irqs.h"
  33
  34 #define AVILA_SDA_PIN   7
  35 #define AVILA_SCL_PIN   6
  36
  37 static struct flash_platform_data avila_flash_data = {
  38         .map_name       = "cfi_probe",
  39         .width          = 2,
  40 };
  41
  42 static struct resource avila_flash_resource = {
  43         .flags          = IORESOURCE_MEM,
  44 };
  45
  46 static struct platform_device avila_flash = {
  47         .name           = "IXP4XX-Flash",
  48         .id             = 0,
  49         .dev            = {
  50                 .platform_data = &avila_flash_data,
  51         },
  52         .num_resources  = 1,
  53         .resource       = &avila_flash_resource,
  54 };
  55
  56 static struct gpiod_lookup_table avila_i2c_gpiod_table = {
  57         .dev_id         = "i2c-gpio.0",
  58         .table          = {
  59                 GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", AVILA_SDA_PIN,
  60                                 NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
  61                 GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", AVILA_SCL_PIN,
  62                                 NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
  63         },
  64 };
  65
  66 static struct platform_device avila_i2c_gpio = {
  67         .name           = "i2c-gpio",
  68         .id             = 0,
  69         .dev     = {
  70                 .platform_data  = NULL,
  71         },
  72 };
  73
  74 static struct resource avila_uart_resources[] = {
  75         {
  76                 .start          = IXP4XX_UART1_BASE_PHYS,
  77                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
  78                 .flags          = IORESOURCE_MEM
  79         },
  80         {
  81                 .start          = IXP4XX_UART2_BASE_PHYS,
  82                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
  83                 .flags          = IORESOURCE_MEM
  84         }
  85 };
  86
  87 static struct plat_serial8250_port avila_uart_data[] = {
  88         {
  89                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
  90                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
  91                 .irq            = IRQ_IXP4XX_UART1,
  92                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
  93                 .iotype         = UPIO_MEM,
  94                 .regshift       = 2,
  95                 .uartclk        = IXP4XX_UART_XTAL,
  96         },
  97         {
  98                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
  99                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
 100                 .irq            = IRQ_IXP4XX_UART2,
 101                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 102                 .iotype         = UPIO_MEM,
 103                 .regshift       = 2,
 104                 .uartclk        = IXP4XX_UART_XTAL,
 105         },
 106         { },
 107 };
 108
 109 static struct platform_device avila_uart = {
 110         .name                   = "serial8250",
 111         .id                     = PLAT8250_DEV_PLATFORM,
 112         .dev.platform_data      = avila_uart_data,
 113         .num_resources          = 2,
 114         .resource               = avila_uart_resources
 115 };
 116
 117 static struct resource avila_pata_resources[] = {
 118         {
 119                 .flags  = IORESOURCE_MEM
 120         },
 121         {
 122                 .flags  = IORESOURCE_MEM,
 123         },
 124         {
 125                 .name   = "intrq",
 126                 .start  = IRQ_IXP4XX_GPIO12,
 127                 .end    = IRQ_IXP4XX_GPIO12,
 128                 .flags  = IORESOURCE_IRQ,
 129         },
 130 };
 131
 132 static struct ixp4xx_pata_data avila_pata_data = {
 133         .cs0_bits       = 0xbfff0043,
 134         .cs1_bits       = 0xbfff0043,
 135 };
 136
 137 static struct platform_device avila_pata = {
 138         .name                   = "pata_ixp4xx_cf",
 139         .id                     = 0,
 140         .dev.platform_data      = &avila_pata_data,
 141         .num_resources          = ARRAY_SIZE(avila_pata_resources),
 142         .resource               = avila_pata_resources,
 143 };
 144
 145 static struct platform_device *avila_devices[] __initdata = {
 146         &avila_i2c_gpio,
 147         &avila_flash,
 148         &avila_uart
 149 };
 150
 151 static void __init avila_init(void)
 152 {
 153         ixp4xx_sys_init();
 154
 155         avila_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 156         avila_flash_resource.end =
 157                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 158
 159         gpiod_add_lookup_table(&avila_i2c_gpiod_table);
 160
 161         platform_add_devices(avila_devices, ARRAY_SIZE(avila_devices));
 162
 163         avila_pata_resources[0].start = IXP4XX_EXP_BUS_BASE(1);
 164         avila_pata_resources[0].end = IXP4XX_EXP_BUS_END(1);
 165
 166         avila_pata_resources[1].start = IXP4XX_EXP_BUS_BASE(2);
 167         avila_pata_resources[1].end = IXP4XX_EXP_BUS_END(2);
 168
 169         avila_pata_data.cs0_cfg = IXP4XX_EXP_CS1;
 170         avila_pata_data.cs1_cfg = IXP4XX_EXP_CS2;
 171
 172         platform_device_register(&avila_pata);
 173
 174 }
 175
 176 MACHINE_START(AVILA, "Gateworks Avila Network Platform")
 177         /* Maintainer: Deepak Saxena <dsaxena@plexity.net> */
 178         .map_io         = ixp4xx_map_io,
 179         .init_early     = ixp4xx_init_early,
 180         .init_irq       = ixp4xx_init_irq,
 181         .init_time      = ixp4xx_timer_init,
 182         .atag_offset    = 0x100,
 183         .init_machine   = avila_init,
 184 #if defined(CONFIG_PCI)
 185         .dma_zone_size  = SZ_64M,
 186 #endif
 187         .restart        = ixp4xx_restart,
 188 MACHINE_END
 189
 190  /*
 191   * Loft is functionally equivalent to Avila except that it has a
 192   * different number for the maximum PCI devices.  The MACHINE
 193   * structure below is identical to Avila except for the comment.
 194   */
 195 #ifdef CONFIG_MACH_LOFT
 196 MACHINE_START(LOFT, "Giant Shoulder Inc Loft board")
 197         /* Maintainer: Tom Billman <kernel@giantshoulderinc.com> */
 198         .map_io         = ixp4xx_map_io,
 199         .init_early     = ixp4xx_init_early,
 200         .init_irq       = ixp4xx_init_irq,
 201         .init_time      = ixp4xx_timer_init,
 202         .atag_offset    = 0x100,
 203         .init_machine   = avila_init,
 204 #if defined(CONFIG_PCI)
 205         .dma_zone_size  = SZ_64M,
 206 #endif
 207         .restart        = ixp4xx_restart,
 208 MACHINE_END
 209 #endif
 210