arch/arm/mach-ixp4xx/ixdp425-setup.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * arch/arm/mach-ixp4xx/ixdp425-setup.c
   4  *
   5  * IXDP425/IXCDP1100 board-setup
   6  *
   7  * Copyright (C) 2003-2005 MontaVista Software, Inc.
   8  *
   9  * Author: Deepak Saxena <dsaxena@plexity.net>
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/init.h>
  14 #include <linux/device.h>
  15 #include <linux/serial.h>
  16 #include <linux/tty.h>
  17 #include <linux/serial_8250.h>
  18 #include <linux/gpio/machine.h>
  19 #include <linux/io.h>
  20 #include <linux/mtd/mtd.h>
  21 #include <linux/mtd/rawnand.h>
  22 #include <linux/mtd/partitions.h>
  23 #include <linux/delay.h>
  24 #include <linux/gpio.h>
  25 #include <asm/types.h>
  26 #include <asm/setup.h>
  27 #include <asm/memory.h>
  28 #include <mach/hardware.h>
  29 #include <asm/mach-types.h>
  30 #include <asm/irq.h>
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/flash.h>
  33
  34 #define IXDP425_SDA_PIN         7
  35 #define IXDP425_SCL_PIN         6
  36
  37 /* NAND Flash pins */
  38 #define IXDP425_NAND_NCE_PIN    12
  39
  40 #define IXDP425_NAND_CMD_BYTE   0x01
  41 #define IXDP425_NAND_ADDR_BYTE  0x02
  42
  43 static struct flash_platform_data ixdp425_flash_data = {
  44         .map_name       = "cfi_probe",
  45         .width          = 2,
  46 };
  47
  48 static struct resource ixdp425_flash_resource = {
  49         .flags          = IORESOURCE_MEM,
  50 };
  51
  52 static struct platform_device ixdp425_flash = {
  53         .name           = "IXP4XX-Flash",
  54         .id             = 0,
  55         .dev            = {
  56                 .platform_data = &ixdp425_flash_data,
  57         },
  58         .num_resources  = 1,
  59         .resource       = &ixdp425_flash_resource,
  60 };
  61
  62 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
  63     defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
  64
  65 static struct mtd_partition ixdp425_partitions[] = {
  66         {
  67                 .name   = "ixp400 NAND FS 0",
  68                 .offset = 0,
  69                 .size   = SZ_8M
  70         }, {
  71                 .name   = "ixp400 NAND FS 1",
  72                 .offset = MTDPART_OFS_APPEND,
  73                 .size   = MTDPART_SIZ_FULL
  74         },
  75 };
  76
  77 static void
  78 ixdp425_flash_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
  79 {
  80         struct nand_chip *this = mtd_to_nand(mtd);
  81         int offset = (int)nand_get_controller_data(this);
  82
  83         if (ctrl & NAND_CTRL_CHANGE) {
  84                 if (ctrl & NAND_NCE) {
  85                         gpio_set_value(IXDP425_NAND_NCE_PIN, 0);
  86                         udelay(5);
  87                 } else
  88                         gpio_set_value(IXDP425_NAND_NCE_PIN, 1);
  89
  90                 offset = (ctrl & NAND_CLE) ? IXDP425_NAND_CMD_BYTE : 0;
  91                 offset |= (ctrl & NAND_ALE) ? IXDP425_NAND_ADDR_BYTE : 0;
  92                 nand_set_controller_data(this, (void *)offset);
  93         }
  94
  95         if (cmd != NAND_CMD_NONE)
  96                 writeb(cmd, this->IO_ADDR_W + offset);
  97 }
  98
  99 static struct platform_nand_data ixdp425_flash_nand_data = {
 100         .chip = {
 101                 .nr_chips               = 1,
 102                 .chip_delay             = 30,
 103                 .partitions             = ixdp425_partitions,
 104                 .nr_partitions          = ARRAY_SIZE(ixdp425_partitions),
 105         },
 106         .ctrl = {
 107                 .cmd_ctrl               = ixdp425_flash_nand_cmd_ctrl
 108         }
 109 };
 110
 111 static struct resource ixdp425_flash_nand_resource = {
 112         .flags          = IORESOURCE_MEM,
 113 };
 114
 115 static struct platform_device ixdp425_flash_nand = {
 116         .name           = "gen_nand",
 117         .id             = -1,
 118         .dev            = {
 119                 .platform_data = &ixdp425_flash_nand_data,
 120         },
 121         .num_resources  = 1,
 122         .resource       = &ixdp425_flash_nand_resource,
 123 };
 124 #endif  /* CONFIG_MTD_NAND_PLATFORM */
 125
 126 static struct gpiod_lookup_table ixdp425_i2c_gpiod_table = {
 127         .dev_id         = "i2c-gpio.0",
 128         .table          = {
 129                 GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", IXDP425_SDA_PIN,
 130                                 NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 131                 GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", IXDP425_SCL_PIN,
 132                                 NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 133         },
 134 };
 135
 136 static struct platform_device ixdp425_i2c_gpio = {
 137         .name           = "i2c-gpio",
 138         .id             = 0,
 139         .dev     = {
 140                 .platform_data  = NULL,
 141         },
 142 };
 143
 144 static struct resource ixdp425_uart_resources[] = {
 145         {
 146                 .start          = IXP4XX_UART1_BASE_PHYS,
 147                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
 148                 .flags          = IORESOURCE_MEM
 149         },
 150         {
 151                 .start          = IXP4XX_UART2_BASE_PHYS,
 152                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
 153                 .flags          = IORESOURCE_MEM
 154         }
 155 };
 156
 157 static struct plat_serial8250_port ixdp425_uart_data[] = {
 158         {
 159                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
 160                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
 161                 .irq            = IRQ_IXP4XX_UART1,
 162                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 163                 .iotype         = UPIO_MEM,
 164                 .regshift       = 2,
 165                 .uartclk        = IXP4XX_UART_XTAL,
 166         },
 167         {
 168                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
 169                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
 170                 .irq            = IRQ_IXP4XX_UART2,
 171                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 172                 .iotype         = UPIO_MEM,
 173                 .regshift       = 2,
 174                 .uartclk        = IXP4XX_UART_XTAL,
 175         },
 176         { },
 177 };
 178
 179 static struct platform_device ixdp425_uart = {
 180         .name                   = "serial8250",
 181         .id                     = PLAT8250_DEV_PLATFORM,
 182         .dev.platform_data      = ixdp425_uart_data,
 183         .num_resources          = 2,
 184         .resource               = ixdp425_uart_resources
 185 };
 186
 187 /* Built-in 10/100 Ethernet MAC interfaces */
 188 static struct eth_plat_info ixdp425_plat_eth[] = {
 189         {
 190                 .phy            = 0,
 191                 .rxq            = 3,
 192                 .txreadyq       = 20,
 193         }, {
 194                 .phy            = 1,
 195                 .rxq            = 4,
 196                 .txreadyq       = 21,
 197         }
 198 };
 199
 200 static struct platform_device ixdp425_eth[] = {
 201         {
 202                 .name                   = "ixp4xx_eth",
 203                 .id                     = IXP4XX_ETH_NPEB,
 204                 .dev.platform_data      = ixdp425_plat_eth,
 205         }, {
 206                 .name                   = "ixp4xx_eth",
 207                 .id                     = IXP4XX_ETH_NPEC,
 208                 .dev.platform_data      = ixdp425_plat_eth + 1,
 209         }
 210 };
 211
 212 static struct platform_device *ixdp425_devices[] __initdata = {
 213         &ixdp425_i2c_gpio,
 214         &ixdp425_flash,
 215 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
 216     defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
 217         &ixdp425_flash_nand,
 218 #endif
 219         &ixdp425_uart,
 220         &ixdp425_eth[0],
 221         &ixdp425_eth[1],
 222 };
 223
 224 static void __init ixdp425_init(void)
 225 {
 226         ixp4xx_sys_init();
 227
 228         ixdp425_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 229         ixdp425_flash_resource.end =
 230                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 231
 232 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
 233     defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
 234         ixdp425_flash_nand_resource.start = IXP4XX_EXP_BUS_BASE(3),
 235         ixdp425_flash_nand_resource.end   = IXP4XX_EXP_BUS_BASE(3) + 0x10 - 1;
 236
 237         gpio_request(IXDP425_NAND_NCE_PIN, "NAND NCE pin");
 238         gpio_direction_output(IXDP425_NAND_NCE_PIN, 0);
 239
 240         /* Configure expansion bus for NAND Flash */
 241         *IXP4XX_EXP_CS3 = IXP4XX_EXP_BUS_CS_EN |
 242                           IXP4XX_EXP_BUS_STROBE_T(1) |  /* extend by 1 clock */
 243                           IXP4XX_EXP_BUS_CYCLES(0) |    /* Intel cycles */
 244                           IXP4XX_EXP_BUS_SIZE(0) |      /* 512bytes addr space*/
 245                           IXP4XX_EXP_BUS_WR_EN |
 246                           IXP4XX_EXP_BUS_BYTE_EN;       /* 8 bit data bus */
 247 #endif
 248
 249         if (cpu_is_ixp43x()) {
 250                 ixdp425_uart.num_resources = 1;
 251                 ixdp425_uart_data[1].flags = 0;
 252         }
 253
 254         gpiod_add_lookup_table(&ixdp425_i2c_gpiod_table);
 255         platform_add_devices(ixdp425_devices, ARRAY_SIZE(ixdp425_devices));
 256 }
 257
 258 #ifdef CONFIG_ARCH_IXDP425
 259 MACHINE_START(IXDP425, "Intel IXDP425 Development Platform")
 260         /* Maintainer: MontaVista Software, Inc. */
 261         .map_io         = ixp4xx_map_io,
 262         .init_early     = ixp4xx_init_early,
 263         .init_irq       = ixp4xx_init_irq,
 264         .init_time      = ixp4xx_timer_init,
 265         .atag_offset    = 0x100,
 266         .init_machine   = ixdp425_init,
 267 #if defined(CONFIG_PCI)
 268         .dma_zone_size  = SZ_64M,
 269 #endif
 270         .restart        = ixp4xx_restart,
 271 MACHINE_END
 272 #endif
 273
 274 #ifdef CONFIG_MACH_IXDP465
 275 MACHINE_START(IXDP465, "Intel IXDP465 Development Platform")
 276         /* Maintainer: MontaVista Software, Inc. */
 277         .map_io         = ixp4xx_map_io,
 278         .init_early     = ixp4xx_init_early,
 279         .init_irq       = ixp4xx_init_irq,
 280         .init_time      = ixp4xx_timer_init,
 281         .atag_offset    = 0x100,
 282         .init_machine   = ixdp425_init,
 283 #if defined(CONFIG_PCI)
 284         .dma_zone_size  = SZ_64M,
 285 #endif
 286 MACHINE_END
 287 #endif
 288
 289 #ifdef CONFIG_ARCH_PRPMC1100
 290 MACHINE_START(IXCDP1100, "Intel IXCDP1100 Development Platform")
 291         /* Maintainer: MontaVista Software, Inc. */
 292         .map_io         = ixp4xx_map_io,
 293         .init_early     = ixp4xx_init_early,
 294         .init_irq       = ixp4xx_init_irq,
 295         .init_time      = ixp4xx_timer_init,
 296         .atag_offset    = 0x100,
 297         .init_machine   = ixdp425_init,
 298 #if defined(CONFIG_PCI)
 299         .dma_zone_size  = SZ_64M,
 300 #endif
 301 MACHINE_END
 302 #endif
 303
 304 #ifdef CONFIG_MACH_KIXRP435
 305 MACHINE_START(KIXRP435, "Intel KIXRP435 Reference Platform")
 306         /* Maintainer: MontaVista Software, Inc. */
 307         .map_io         = ixp4xx_map_io,
 308         .init_early     = ixp4xx_init_early,
 309         .init_irq       = ixp4xx_init_irq,
 310         .init_time      = ixp4xx_timer_init,
 311         .atag_offset    = 0x100,
 312         .init_machine   = ixdp425_init,
 313 #if defined(CONFIG_PCI)
 314         .dma_zone_size  = SZ_64M,
 315 #endif
 316 MACHINE_END
 317 #endif