git.oblomov.eu Git - linux-2.6/blob - arch/arm/mach-ixp4xx/ixdp425-setup.c

   1 /*
   2  * arch/arm/mach-ixp4xx/ixdp425-setup.c
   3  *
   4  * IXDP425/IXCDP1100 board-setup
   5  *
   6  * Copyright (C) 2003-2005 MontaVista Software, Inc.
   7  *
   8  * Author: Deepak Saxena <dsaxena@plexity.net>
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/device.h>
  14 #include <linux/serial.h>
  15 #include <linux/tty.h>
  16 #include <linux/serial_8250.h>
  17 #include <linux/slab.h>
  18 #include <linux/io.h>
  19 #include <linux/mtd/mtd.h>
  20 #include <linux/mtd/nand.h>
  21 #include <linux/mtd/partitions.h>
  22
  23 #include <asm/types.h>
  24 #include <asm/setup.h>
  25 #include <asm/memory.h>
  26 #include <asm/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 #include <asm/delay.h>
  32
  33 static struct flash_platform_data ixdp425_flash_data = {
  34         .map_name       = "cfi_probe",
  35         .width          = 2,
  36 };
  37
  38 static struct resource ixdp425_flash_resource = {
  39         .flags          = IORESOURCE_MEM,
  40 };
  41
  42 static struct platform_device ixdp425_flash = {
  43         .name           = "IXP4XX-Flash",
  44         .id             = 0,
  45         .dev            = {
  46                 .platform_data = &ixdp425_flash_data,
  47         },
  48         .num_resources  = 1,
  49         .resource       = &ixdp425_flash_resource,
  50 };
  51
  52 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
  53     defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
  54
  55 #ifdef CONFIG_MTD_PARTITIONS
  56 const char *part_probes[] = { "cmdlinepart", NULL };
  57
  58 static struct mtd_partition ixdp425_partitions[] = {
  59         {
  60                 .name   = "ixp400 NAND FS 0",
  61                 .offset = 0,
  62                 .size   = SZ_8M
  63         }, {
  64                 .name   = "ixp400 NAND FS 1",
  65                 .offset = MTDPART_OFS_APPEND,
  66                 .size   = MTDPART_SIZ_FULL
  67         },
  68 };
  69 #endif
  70
  71 static void
  72 ixdp425_flash_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
  73 {
  74         struct nand_chip *this = mtd->priv;
  75         int offset = (int)this->priv;
  76
  77         if (ctrl & NAND_CTRL_CHANGE) {
  78                 if (ctrl & NAND_NCE) {
  79                         gpio_line_set(IXDP425_NAND_NCE_PIN, IXP4XX_GPIO_LOW);
  80                         udelay(5);
  81                 } else
  82                         gpio_line_set(IXDP425_NAND_NCE_PIN, IXP4XX_GPIO_HIGH);
  83
  84                 offset = (ctrl & NAND_CLE) ? IXDP425_NAND_CMD_BYTE : 0;
  85                 offset |= (ctrl & NAND_ALE) ? IXDP425_NAND_ADDR_BYTE : 0;
  86                 this->priv = (void *)offset;
  87         }
  88
  89         if (cmd != NAND_CMD_NONE)
  90                 writeb(cmd, this->IO_ADDR_W + offset);
  91 }
  92
  93 static struct platform_nand_data ixdp425_flash_nand_data = {
  94         .chip = {
  95                 .chip_delay             = 30,
  96                 .options                = NAND_NO_AUTOINCR,
  97 #ifdef CONFIG_MTD_PARTITIONS
  98                 .part_probe_types       = part_probes,
  99                 .partitions             = ixdp425_partitions,
 100                 .nr_partitions          = ARRAY_SIZE(ixdp425_partitions),
 101 #endif
 102         },
 103         .ctrl = {
 104                 .cmd_ctrl               = ixdp425_flash_nand_cmd_ctrl
 105         }
 106 };
 107
 108 static struct resource ixdp425_flash_nand_resource = {
 109         .flags          = IORESOURCE_MEM,
 110 };
 111
 112 static struct platform_device ixdp425_flash_nand = {
 113         .name           = "gen_nand",
 114         .id             = -1,
 115         .dev            = {
 116                 .platform_data = &ixdp425_flash_nand_data,
 117         },
 118         .num_resources  = 1,
 119         .resource       = &ixdp425_flash_nand_resource,
 120 };
 121 #endif  /* CONFIG_MTD_NAND_PLATFORM */
 122
 123 static struct ixp4xx_i2c_pins ixdp425_i2c_gpio_pins = {
 124         .sda_pin        = IXDP425_SDA_PIN,
 125         .scl_pin        = IXDP425_SCL_PIN,
 126 };
 127
 128 static struct platform_device ixdp425_i2c_controller = {
 129         .name           = "IXP4XX-I2C",
 130         .id             = 0,
 131         .dev            = {
 132                 .platform_data = &ixdp425_i2c_gpio_pins,
 133         },
 134         .num_resources  = 0
 135 };
 136
 137 static struct resource ixdp425_uart_resources[] = {
 138         {
 139                 .start          = IXP4XX_UART1_BASE_PHYS,
 140                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
 141                 .flags          = IORESOURCE_MEM
 142         },
 143         {
 144                 .start          = IXP4XX_UART2_BASE_PHYS,
 145                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
 146                 .flags          = IORESOURCE_MEM
 147         }
 148 };
 149
 150 static struct plat_serial8250_port ixdp425_uart_data[] = {
 151         {
 152                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
 153                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
 154                 .irq            = IRQ_IXP4XX_UART1,
 155                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 156                 .iotype         = UPIO_MEM,
 157                 .regshift       = 2,
 158                 .uartclk        = IXP4XX_UART_XTAL,
 159         },
 160         {
 161                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
 162                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
 163                 .irq            = IRQ_IXP4XX_UART2,
 164                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 165                 .iotype         = UPIO_MEM,
 166                 .regshift       = 2,
 167                 .uartclk        = IXP4XX_UART_XTAL,
 168         },
 169         { },
 170 };
 171
 172 static struct platform_device ixdp425_uart = {
 173         .name                   = "serial8250",
 174         .id                     = PLAT8250_DEV_PLATFORM,
 175         .dev.platform_data      = ixdp425_uart_data,
 176         .num_resources          = 2,
 177         .resource               = ixdp425_uart_resources
 178 };
 179
 180 static struct platform_device *ixdp425_devices[] __initdata = {
 181         &ixdp425_i2c_controller,
 182         &ixdp425_flash,
 183 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
 184     defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
 185         &ixdp425_flash_nand,
 186 #endif
 187         &ixdp425_uart
 188 };
 189
 190 static void __init ixdp425_init(void)
 191 {
 192         ixp4xx_sys_init();
 193
 194         ixdp425_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 195         ixdp425_flash_resource.end =
 196                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 197
 198 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
 199     defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
 200         ixdp425_flash_nand_resource.start = IXP4XX_EXP_BUS_BASE(3),
 201         ixdp425_flash_nand_resource.end   = IXP4XX_EXP_BUS_BASE(3) + 0x10 - 1;
 202
 203         gpio_line_config(IXDP425_NAND_NCE_PIN, IXP4XX_GPIO_OUT);
 204
 205         /* Configure expansion bus for NAND Flash */
 206         *IXP4XX_EXP_CS3 = IXP4XX_EXP_BUS_CS_EN |
 207                           IXP4XX_EXP_BUS_STROBE_T(1) |  /* extend by 1 clock */
 208                           IXP4XX_EXP_BUS_CYCLES(0) |    /* Intel cycles */
 209                           IXP4XX_EXP_BUS_SIZE(0) |      /* 512bytes addr space*/
 210                           IXP4XX_EXP_BUS_WR_EN |
 211                           IXP4XX_EXP_BUS_BYTE_EN;       /* 8 bit data bus */
 212 #endif
 213
 214         if (cpu_is_ixp43x()) {
 215                 ixdp425_uart.num_resources = 1;
 216                 ixdp425_uart_data[1].flags = 0;
 217         }
 218
 219         platform_add_devices(ixdp425_devices, ARRAY_SIZE(ixdp425_devices));
 220 }
 221
 222 #ifdef CONFIG_ARCH_IXDP425
 223 MACHINE_START(IXDP425, "Intel IXDP425 Development Platform")
 224         /* Maintainer: MontaVista Software, Inc. */
 225         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
 226         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xfffc,
 227         .map_io         = ixp4xx_map_io,
 228         .init_irq       = ixp4xx_init_irq,
 229         .timer          = &ixp4xx_timer,
 230         .boot_params    = 0x0100,
 231         .init_machine   = ixdp425_init,
 232 MACHINE_END
 233 #endif
 234
 235 #ifdef CONFIG_MACH_IXDP465
 236 MACHINE_START(IXDP465, "Intel IXDP465 Development Platform")
 237         /* Maintainer: MontaVista Software, Inc. */
 238         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
 239         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xfffc,
 240         .map_io         = ixp4xx_map_io,
 241         .init_irq       = ixp4xx_init_irq,
 242         .timer          = &ixp4xx_timer,
 243         .boot_params    = 0x0100,
 244         .init_machine   = ixdp425_init,
 245 MACHINE_END
 246 #endif
 247
 248 #ifdef CONFIG_ARCH_PRPMC1100
 249 MACHINE_START(IXCDP1100, "Intel IXCDP1100 Development Platform")
 250         /* Maintainer: MontaVista Software, Inc. */
 251         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
 252         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xfffc,
 253         .map_io         = ixp4xx_map_io,
 254         .init_irq       = ixp4xx_init_irq,
 255         .timer          = &ixp4xx_timer,
 256         .boot_params    = 0x0100,
 257         .init_machine   = ixdp425_init,
 258 MACHINE_END
 259 #endif
 260
 261 #ifdef CONFIG_MACH_KIXRP435
 262 MACHINE_START(KIXRP435, "Intel KIXRP435 Reference Platform")
 263         /* Maintainer: MontaVista Software, Inc. */
 264         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
 265         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xfffc,
 266         .map_io         = ixp4xx_map_io,
 267         .init_irq       = ixp4xx_init_irq,
 268         .timer          = &ixp4xx_timer,
 269         .boot_params    = 0x0100,
 270         .init_machine   = ixdp425_init,
 271 MACHINE_END
 272 #endif