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/at91sam9_smc.h>
  29 #include <mach/hardware.h>
  30
  31 #include "at91_aic.h"
  32 #include "board.h"
  33 #include "sam9_smc.h"
  34 #include "generic.h"
  35 #include "gpio.h"
  36
  37
  38 void __init stamp9g20_init_early(void)
  39 {
  40         /* Initialize processor: 18.432 MHz crystal */
  41         at91_initialize(18432000);
  42 }
  43
  44 /*
  45  * NAND flash
  46  */
  47 static struct atmel_nand_data __initdata nand_data = {
  48         .ale            = 21,
  49         .cle            = 22,
  50         .rdy_pin        = AT91_PIN_PC13,
  51         .enable_pin     = AT91_PIN_PC14,
  52         .bus_width_16   = 0,
  53         .det_pin        = -EINVAL,
  54         .ecc_mode       = NAND_ECC_SOFT,
  55 };
  56
  57 static struct sam9_smc_config __initdata nand_smc_config = {
  58         .ncs_read_setup         = 0,
  59         .nrd_setup              = 2,
  60         .ncs_write_setup        = 0,
  61         .nwe_setup              = 2,
  62
  63         .ncs_read_pulse         = 4,
  64         .nrd_pulse              = 4,
  65         .ncs_write_pulse        = 4,
  66         .nwe_pulse              = 4,
  67
  68         .read_cycle             = 7,
  69         .write_cycle            = 7,
  70
  71         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
  72         .tdf_cycles             = 3,
  73 };
  74
  75 static void __init add_device_nand(void)
  76 {
  77         /* configure chip-select 3 (NAND) */
  78         sam9_smc_configure(0, 3, &nand_smc_config);
  79
  80         at91_add_device_nand(&nand_data);
  81 }
  82
  83
  84 /*
  85  * MCI (SD/MMC)
  86  * det_pin, wp_pin and vcc_pin are not connected
  87  */
  88 static struct mci_platform_data __initdata mmc_data = {
  89         .slot[0] = {
  90                 .bus_width      = 4,
  91                 .detect_pin     = -1,
  92                 .wp_pin         = -1,
  93         },
  94 };
  95
  96
  97 /*
  98  * USB Host port
  99  */
 100 static struct at91_usbh_data __initdata usbh_data = {
 101         .ports          = 2,
 102         .vbus_pin       = {-EINVAL, -EINVAL},
 103         .overcurrent_pin= {-EINVAL, -EINVAL},
 104 };
 105
 106
 107 /*
 108  * USB Device port
 109  */
 110 static struct at91_udc_data __initdata portuxg20_udc_data = {
 111         .vbus_pin       = AT91_PIN_PC7,
 112         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
 113 };
 114
 115 static struct at91_udc_data __initdata stamp9g20evb_udc_data = {
 116         .vbus_pin       = AT91_PIN_PA22,
 117         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
 118 };
 119
 120
 121 /*
 122  * MACB Ethernet device
 123  */
 124 static struct macb_platform_data __initdata macb_data = {
 125         .phy_irq_pin    = AT91_PIN_PA28,
 126         .is_rmii        = 1,
 127 };
 128
 129
 130 /*
 131  * LEDs
 132  */
 133 static struct gpio_led portuxg20_leds[] = {
 134         {
 135                 .name                   = "LED2",
 136                 .gpio                   = AT91_PIN_PC5,
 137                 .default_trigger        = "none",
 138         }, {
 139                 .name                   = "LED3",
 140                 .gpio                   = AT91_PIN_PC4,
 141                 .default_trigger        = "none",
 142         }, {
 143                 .name                   = "LED4",
 144                 .gpio                   = AT91_PIN_PC10,
 145                 .default_trigger        = "heartbeat",
 146         }
 147 };
 148
 149 static struct gpio_led stamp9g20evb_leds[] = {
 150         {
 151                 .name                   = "D8",
 152                 .gpio                   = AT91_PIN_PB18,
 153                 .active_low             = 1,
 154                 .default_trigger        = "none",
 155         }, {
 156                 .name                   = "D9",
 157                 .gpio                   = AT91_PIN_PB19,
 158                 .active_low             = 1,
 159                 .default_trigger        = "none",
 160         }, {
 161                 .name                   = "D10",
 162                 .gpio                   = AT91_PIN_PB20,
 163                 .active_low             = 1,
 164                 .default_trigger        = "heartbeat",
 165         }
 166 };
 167
 168
 169 /*
 170  * SPI devices
 171  */
 172 static struct spi_board_info portuxg20_spi_devices[] = {
 173         {
 174                 .modalias       = "spidev",
 175                 .chip_select    = 0,
 176                 .max_speed_hz   = 1 * 1000 * 1000,
 177                 .bus_num        = 0,
 178         }, {
 179                 .modalias       = "spidev",
 180                 .chip_select    = 0,
 181                 .max_speed_hz   = 1 * 1000 * 1000,
 182                 .bus_num        = 1,
 183         },
 184 };
 185
 186
 187 /*
 188  * Dallas 1-Wire
 189  */
 190 static struct w1_gpio_platform_data w1_gpio_pdata = {
 191         .pin            = AT91_PIN_PA29,
 192         .is_open_drain  = 1,
 193         .ext_pullup_enable_pin  = -EINVAL,
 194 };
 195
 196 static struct platform_device w1_device = {
 197         .name                   = "w1-gpio",
 198         .id                     = -1,
 199         .dev.platform_data      = &w1_gpio_pdata,
 200 };
 201
 202 void add_w1(void)
 203 {
 204         at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
 205         at91_set_multi_drive(w1_gpio_pdata.pin, 1);
 206         platform_device_register(&w1_device);
 207 }
 208
 209
 210 void __init stamp9g20_board_init(void)
 211 {
 212         /* Serial */
 213         /* DGBU on ttyS0. (Rx & Tx only) */
 214         at91_register_uart(0, 0, 0);
 215         at91_add_device_serial();
 216         /* NAND */
 217         add_device_nand();
 218         /* MMC */
 219         at91_add_device_mci(0, &mmc_data);
 220         /* W1 */
 221         add_w1();
 222 }
 223
 224 static void __init portuxg20_board_init(void)
 225 {
 226         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
 227         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
 228                                                 | ATMEL_UART_DTR | ATMEL_UART_DSR
 229                                                 | ATMEL_UART_DCD | ATMEL_UART_RI);
 230
 231         /* USART1 on ttyS2. (Rx, Tx, CTS, RTS) */
 232         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
 233
 234         /* USART2 on ttyS3. (Rx, Tx, CTS, RTS) */
 235         at91_register_uart(AT91SAM9260_ID_US2, 3, ATMEL_UART_CTS | ATMEL_UART_RTS);
 236
 237         /* USART4 on ttyS5. (Rx, Tx only) */
 238         at91_register_uart(AT91SAM9260_ID_US4, 5, 0);
 239
 240         /* USART5 on ttyS6. (Rx, Tx only) */
 241         at91_register_uart(AT91SAM9260_ID_US5, 6, 0);
 242         stamp9g20_board_init();
 243         /* USB Host */
 244         at91_add_device_usbh(&usbh_data);
 245         /* USB Device */
 246         at91_add_device_udc(&portuxg20_udc_data);
 247         /* Ethernet */
 248         at91_add_device_eth(&macb_data);
 249         /* I2C */
 250         at91_add_device_i2c(NULL, 0);
 251         /* SPI */
 252         at91_add_device_spi(portuxg20_spi_devices, ARRAY_SIZE(portuxg20_spi_devices));
 253         /* LEDs */
 254         at91_gpio_leds(portuxg20_leds, ARRAY_SIZE(portuxg20_leds));
 255 }
 256
 257 static void __init stamp9g20evb_board_init(void)
 258 {
 259         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
 260         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
 261                                                 | ATMEL_UART_DTR | ATMEL_UART_DSR
 262                                                 | ATMEL_UART_DCD | ATMEL_UART_RI);
 263         stamp9g20_board_init();
 264         /* USB Host */
 265         at91_add_device_usbh(&usbh_data);
 266         /* USB Device */
 267         at91_add_device_udc(&stamp9g20evb_udc_data);
 268         /* Ethernet */
 269         at91_add_device_eth(&macb_data);
 270         /* I2C */
 271         at91_add_device_i2c(NULL, 0);
 272         /* LEDs */
 273         at91_gpio_leds(stamp9g20evb_leds, ARRAY_SIZE(stamp9g20evb_leds));
 274 }
 275
 276 MACHINE_START(PORTUXG20, "taskit PortuxG20")
 277         /* Maintainer: taskit GmbH */
 278         .init_time      = at91sam926x_pit_init,
 279         .map_io         = at91_map_io,
 280         .handle_irq     = at91_aic_handle_irq,
 281         .init_early     = stamp9g20_init_early,
 282         .init_irq       = at91_init_irq_default,
 283         .init_machine   = portuxg20_board_init,
 284 MACHINE_END
 285
 286 MACHINE_START(STAMP9G20, "taskit Stamp9G20")
 287         /* Maintainer: taskit GmbH */
 288         .init_time      = at91sam926x_pit_init,
 289         .map_io         = at91_map_io,
 290         .handle_irq     = at91_aic_handle_irq,
 291         .init_early     = stamp9g20_init_early,
 292         .init_irq       = at91_init_irq_default,
 293         .init_machine   = stamp9g20evb_board_init,
 294 MACHINE_END