release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-at91/board-stamp9g20.c

   1 /*
   2  *  Copyright (C) 2010 Christian Glindkamp <christian.glindkamp@taskit.de>
   3  *                     taskit GmbH
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19
  20 #include <linux/mm.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/gpio.h>
  23 #include <linux/w1-gpio.h>
  24
  25 #include <asm/mach-types.h>
  26 #include <asm/mach/arch.h>
  27
  28 #include <mach/board.h>
  29 #include <mach/at91sam9_smc.h>
  30
  31 #include "sam9_smc.h"
  32 #include "generic.h"
  33
  34
  35 static void __init portuxg20_map_io(void)
  36 {
  37         /* Initialize processor: 18.432 MHz crystal */
  38         at91sam9260_initialize(18432000);
  39
  40         /* DGBU on ttyS0. (Rx & Tx only) */
  41         at91_register_uart(0, 0, 0);
  42
  43         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  44         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
  45                                                 | ATMEL_UART_DTR | ATMEL_UART_DSR
  46                                                 | ATMEL_UART_DCD | ATMEL_UART_RI);
  47
  48         /* USART1 on ttyS2. (Rx, Tx, CTS, RTS) */
  49         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
  50
  51         /* USART2 on ttyS3. (Rx, Tx, CTS, RTS) */
  52         at91_register_uart(AT91SAM9260_ID_US2, 3, ATMEL_UART_CTS | ATMEL_UART_RTS);
  53
  54         /* USART4 on ttyS5. (Rx, Tx only) */
  55         at91_register_uart(AT91SAM9260_ID_US4, 5, 0);
  56
  57         /* USART5 on ttyS6. (Rx, Tx only) */
  58         at91_register_uart(AT91SAM9260_ID_US5, 6, 0);
  59
  60         /* set serial console to ttyS0 (ie, DBGU) */
  61         at91_set_serial_console(0);
  62 }
  63
  64 static void __init stamp9g20_map_io(void)
  65 {
  66         /* Initialize processor: 18.432 MHz crystal */
  67         at91sam9260_initialize(18432000);
  68
  69         /* DGBU on ttyS0. (Rx & Tx only) */
  70         at91_register_uart(0, 0, 0);
  71
  72         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  73         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
  74                                                 | ATMEL_UART_DTR | ATMEL_UART_DSR
  75                                                 | ATMEL_UART_DCD | ATMEL_UART_RI);
  76
  77         /* set serial console to ttyS0 (ie, DBGU) */
  78         at91_set_serial_console(0);
  79 }
  80
  81 static void __init init_irq(void)
  82 {
  83         at91sam9260_init_interrupts(NULL);
  84 }
  85
  86
  87 /*
  88  * NAND flash
  89  */
  90 static struct atmel_nand_data __initdata nand_data = {
  91         .ale            = 21,
  92         .cle            = 22,
  93         .rdy_pin        = AT91_PIN_PC13,
  94         .enable_pin     = AT91_PIN_PC14,
  95         .bus_width_16   = 0,
  96 };
  97
  98 static struct sam9_smc_config __initdata nand_smc_config = {
  99         .ncs_read_setup         = 0,
 100         .nrd_setup              = 2,
 101         .ncs_write_setup        = 0,
 102         .nwe_setup              = 2,
 103
 104         .ncs_read_pulse         = 4,
 105         .nrd_pulse              = 4,
 106         .ncs_write_pulse        = 4,
 107         .nwe_pulse              = 4,
 108
 109         .read_cycle             = 7,
 110         .write_cycle            = 7,
 111
 112         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 113         .tdf_cycles             = 3,
 114 };
 115
 116 static void __init add_device_nand(void)
 117 {
 118         /* configure chip-select 3 (NAND) */
 119         sam9_smc_configure(3, &nand_smc_config);
 120
 121         at91_add_device_nand(&nand_data);
 122 }
 123
 124
 125 /*
 126  * MCI (SD/MMC)
 127  * det_pin, wp_pin and vcc_pin are not connected
 128  */
 129 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 130 static struct mci_platform_data __initdata mmc_data = {
 131         .slot[0] = {
 132                 .bus_width      = 4,
 133         },
 134 };
 135 #else
 136 static struct at91_mmc_data __initdata mmc_data = {
 137         .slot_b         = 0,
 138         .wire4          = 1,
 139 };
 140 #endif
 141
 142
 143 /*
 144  * USB Host port
 145  */
 146 static struct at91_usbh_data __initdata usbh_data = {
 147         .ports          = 2,
 148 };
 149
 150
 151 /*
 152  * USB Device port
 153  */
 154 static struct at91_udc_data __initdata portuxg20_udc_data = {
 155         .vbus_pin       = AT91_PIN_PC7,
 156         .pullup_pin     = 0,            /* pull-up driven by UDC */
 157 };
 158
 159 static struct at91_udc_data __initdata stamp9g20_udc_data = {
 160         .vbus_pin       = AT91_PIN_PA22,
 161         .pullup_pin     = 0,            /* pull-up driven by UDC */
 162 };
 163
 164
 165 /*
 166  * MACB Ethernet device
 167  */
 168 static struct at91_eth_data __initdata macb_data = {
 169         .phy_irq_pin    = AT91_PIN_PA28,
 170         .is_rmii        = 1,
 171 };
 172
 173
 174 /*
 175  * LEDs
 176  */
 177 static struct gpio_led portuxg20_leds[] = {
 178         {
 179                 .name                   = "LED2",
 180                 .gpio                   = AT91_PIN_PC5,
 181                 .default_trigger        = "none",
 182         }, {
 183                 .name                   = "LED3",
 184                 .gpio                   = AT91_PIN_PC4,
 185                 .default_trigger        = "none",
 186         }, {
 187                 .name                   = "LED4",
 188                 .gpio                   = AT91_PIN_PC10,
 189                 .default_trigger        = "heartbeat",
 190         }
 191 };
 192
 193 static struct gpio_led stamp9g20_leds[] = {
 194         {
 195                 .name                   = "D8",
 196                 .gpio                   = AT91_PIN_PB18,
 197                 .active_low             = 1,
 198                 .default_trigger        = "none",
 199         }, {
 200                 .name                   = "D9",
 201                 .gpio                   = AT91_PIN_PB19,
 202                 .active_low             = 1,
 203                 .default_trigger        = "none",
 204         }, {
 205                 .name                   = "D10",
 206                 .gpio                   = AT91_PIN_PB20,
 207                 .active_low             = 1,
 208                 .default_trigger        = "heartbeat",
 209         }
 210 };
 211
 212
 213 /*
 214  * SPI devices
 215  */
 216 static struct spi_board_info portuxg20_spi_devices[] = {
 217         {
 218                 .modalias       = "spidev",
 219                 .chip_select    = 0,
 220                 .max_speed_hz   = 1 * 1000 * 1000,
 221                 .bus_num        = 0,
 222         }, {
 223                 .modalias       = "spidev",
 224                 .chip_select    = 0,
 225                 .max_speed_hz   = 1 * 1000 * 1000,
 226                 .bus_num        = 1,
 227         },
 228 };
 229
 230
 231 /*
 232  * Dallas 1-Wire
 233  */
 234 static struct w1_gpio_platform_data w1_gpio_pdata = {
 235         .pin            = AT91_PIN_PA29,
 236         .is_open_drain  = 1,
 237 };
 238
 239 static struct platform_device w1_device = {
 240         .name                   = "w1-gpio",
 241         .id                     = -1,
 242         .dev.platform_data      = &w1_gpio_pdata,
 243 };
 244
 245 void add_w1(void)
 246 {
 247         at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
 248         at91_set_multi_drive(w1_gpio_pdata.pin, 1);
 249         platform_device_register(&w1_device);
 250 }
 251
 252
 253 static void __init generic_board_init(void)
 254 {
 255         /* Serial */
 256         at91_add_device_serial();
 257         /* NAND */
 258         add_device_nand();
 259         /* MMC */
 260 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 261         at91_add_device_mci(0, &mmc_data);
 262 #else
 263         at91_add_device_mmc(0, &mmc_data);
 264 #endif
 265         /* USB Host */
 266         at91_add_device_usbh(&usbh_data);
 267         /* Ethernet */
 268         at91_add_device_eth(&macb_data);
 269         /* I2C */
 270         at91_add_device_i2c(NULL, 0);
 271         /* W1 */
 272         add_w1();
 273 }
 274
 275 static void __init portuxg20_board_init(void)
 276 {
 277         generic_board_init();
 278         /* SPI */
 279         at91_add_device_spi(portuxg20_spi_devices, ARRAY_SIZE(portuxg20_spi_devices));
 280         /* USB Device */
 281         at91_add_device_udc(&portuxg20_udc_data);
 282         /* LEDs */
 283         at91_gpio_leds(portuxg20_leds, ARRAY_SIZE(portuxg20_leds));
 284 }
 285
 286 static void __init stamp9g20_board_init(void)
 287 {
 288         generic_board_init();
 289         /* USB Device */
 290         at91_add_device_udc(&stamp9g20_udc_data);
 291         /* LEDs */
 292         at91_gpio_leds(stamp9g20_leds, ARRAY_SIZE(stamp9g20_leds));
 293 }
 294
 295 MACHINE_START(PORTUXG20, "taskit PortuxG20")
 296         /* Maintainer: taskit GmbH */
 297         .phys_io        = AT91_BASE_SYS,
 298         .io_pg_offst    = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
 299         .boot_params    = AT91_SDRAM_BASE + 0x100,
 300         .timer          = &at91sam926x_timer,
 301         .map_io         = portuxg20_map_io,
 302         .init_irq       = init_irq,
 303         .init_machine   = portuxg20_board_init,
 304 MACHINE_END
 305
 306 MACHINE_START(STAMP9G20, "taskit Stamp9G20")
 307         /* Maintainer: taskit GmbH */
 308         .phys_io        = AT91_BASE_SYS,
 309         .io_pg_offst    = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
 310         .boot_params    = AT91_SDRAM_BASE + 0x100,
 311         .timer          = &at91sam926x_timer,
 312         .map_io         = stamp9g20_map_io,
 313         .init_irq       = init_irq,
 314         .init_machine   = stamp9g20_board_init,
 315 MACHINE_END