arch/arm/mach-at91/board-foxg20.c

   1 /*
   2  *  Copyright (C) 2005 SAN People
   3  *  Copyright (C) 2008 Atmel
   4  *  Copyright (C) 2010 Lee McLoughlin - lee@lmmrtech.com
   5  *  Copyright (C) 2010 Sergio Tanzilli - tanzilli@acmesystems.it
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <linux/types.h>
  23 #include <linux/init.h>
  24 #include <linux/mm.h>
  25 #include <linux/module.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/spi/spi.h>
  28 #include <linux/spi/at73c213.h>
  29 #include <linux/gpio.h>
  30 #include <linux/gpio_keys.h>
  31 #include <linux/input.h>
  32 #include <linux/clk.h>
  33 #include <linux/w1-gpio.h>
  34
  35 #include <mach/hardware.h>
  36 #include <asm/setup.h>
  37 #include <asm/mach-types.h>
  38 #include <asm/irq.h>
  39
  40 #include <asm/mach/arch.h>
  41 #include <asm/mach/map.h>
  42 #include <asm/mach/irq.h>
  43
  44 #include <mach/board.h>
  45 #include <mach/at91sam9_smc.h>
  46
  47 #include "sam9_smc.h"
  48 #include "generic.h"
  49
  50 /*
  51  * The FOX Board G20 hardware comes as the "Netus G20" board with
  52  * just the cpu, ram, dataflash and two header connectors.
  53  * This is plugged into the FOX Board which provides the ethernet,
  54  * usb, rtc, leds, switch, ...
  55  *
  56  * For more info visit: http://www.acmesystems.it/foxg20
  57  */
  58
  59
  60 static void __init foxg20_init_early(void)
  61 {
  62         /* Initialize processor: 18.432 MHz crystal */
  63         at91_initialize(18432000);
  64
  65         /* DBGU on ttyS0. (Rx & Tx only) */
  66         at91_register_uart(0, 0, 0);
  67
  68         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  69         at91_register_uart(AT91SAM9260_ID_US0, 1,
  70                                 ATMEL_UART_CTS
  71                                 | ATMEL_UART_RTS
  72                                 | ATMEL_UART_DTR
  73                                 | ATMEL_UART_DSR
  74                                 | ATMEL_UART_DCD
  75                                 | ATMEL_UART_RI);
  76
  77         /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
  78         at91_register_uart(AT91SAM9260_ID_US1, 2,
  79                 ATMEL_UART_CTS
  80                 | ATMEL_UART_RTS);
  81
  82         /* USART2 on ttyS3. (Rx & Tx only) */
  83         at91_register_uart(AT91SAM9260_ID_US2, 3, 0);
  84
  85         /* USART3 on ttyS4. (Rx, Tx, RTS, CTS) */
  86         at91_register_uart(AT91SAM9260_ID_US3, 4,
  87                 ATMEL_UART_CTS
  88                 | ATMEL_UART_RTS);
  89
  90         /* USART4 on ttyS5. (Rx & Tx only) */
  91         at91_register_uart(AT91SAM9260_ID_US4, 5, 0);
  92
  93         /* USART5 on ttyS6. (Rx & Tx only) */
  94         at91_register_uart(AT91SAM9260_ID_US5, 6, 0);
  95
  96         /* set serial console to ttyS0 (ie, DBGU) */
  97         at91_set_serial_console(0);
  98
  99         /* Set the internal pull-up resistor on DRXD */
 100         at91_set_A_periph(AT91_PIN_PB14, 1);
 101
 102 }
 103
 104 /*
 105  * USB Host port
 106  */
 107 static struct at91_usbh_data __initdata foxg20_usbh_data = {
 108         .ports          = 2,
 109 };
 110
 111 /*
 112  * USB Device port
 113  */
 114 static struct at91_udc_data __initdata foxg20_udc_data = {
 115         .vbus_pin       = AT91_PIN_PC6,
 116         .pullup_pin     = 0,            /* pull-up driven by UDC */
 117 };
 118
 119
 120 /*
 121  * SPI devices.
 122  */
 123 static struct spi_board_info foxg20_spi_devices[] = {
 124 #if !defined(CONFIG_MMC_AT91)
 125         {
 126                 .modalias       = "mtd_dataflash",
 127                 .chip_select    = 1,
 128                 .max_speed_hz   = 15 * 1000 * 1000,
 129                 .bus_num        = 0,
 130         },
 131 #endif
 132 };
 133
 134
 135 /*
 136  * MACB Ethernet device
 137  */
 138 static struct at91_eth_data __initdata foxg20_macb_data = {
 139         .phy_irq_pin    = AT91_PIN_PA7,
 140         .is_rmii        = 1,
 141 };
 142
 143 /*
 144  * MCI (SD/MMC)
 145  * det_pin, wp_pin and vcc_pin are not connected
 146  */
 147 static struct at91_mmc_data __initdata foxg20_mmc_data = {
 148         .slot_b         = 1,
 149         .wire4          = 1,
 150 };
 151
 152
 153 /*
 154  * LEDs
 155  */
 156 static struct gpio_led foxg20_leds[] = {
 157         {       /* user led, red */
 158                 .name                   = "user_led",
 159                 .gpio                   = AT91_PIN_PC7,
 160                 .active_low             = 0,
 161                 .default_trigger        = "heartbeat",
 162         },
 163 };
 164
 165
 166 /*
 167  * GPIO Buttons
 168  */
 169 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 170 static struct gpio_keys_button foxg20_buttons[] = {
 171         {
 172                 .gpio           = AT91_PIN_PC4,
 173                 .code           = BTN_1,
 174                 .desc           = "Button 1",
 175                 .active_low     = 1,
 176                 .wakeup         = 1,
 177         },
 178 };
 179
 180 static struct gpio_keys_platform_data foxg20_button_data = {
 181         .buttons        = foxg20_buttons,
 182         .nbuttons       = ARRAY_SIZE(foxg20_buttons),
 183 };
 184
 185 static struct platform_device foxg20_button_device = {
 186         .name           = "gpio-keys",
 187         .id             = -1,
 188         .num_resources  = 0,
 189         .dev            = {
 190                 .platform_data  = &foxg20_button_data,
 191         }
 192 };
 193
 194 static void __init foxg20_add_device_buttons(void)
 195 {
 196         at91_set_gpio_input(AT91_PIN_PC4, 1);   /* btn1 */
 197         at91_set_deglitch(AT91_PIN_PC4, 1);
 198
 199         platform_device_register(&foxg20_button_device);
 200 }
 201 #else
 202 static void __init foxg20_add_device_buttons(void) {}
 203 #endif
 204
 205
 206 #if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE)
 207 static struct w1_gpio_platform_data w1_gpio_pdata = {
 208         /* If you choose to use a pin other than PB16 it needs to be 3.3V */
 209         .pin            = AT91_PIN_PB16,
 210         .is_open_drain  = 1,
 211 };
 212
 213 static struct platform_device w1_device = {
 214         .name                   = "w1-gpio",
 215         .id                     = -1,
 216         .dev.platform_data      = &w1_gpio_pdata,
 217 };
 218
 219 static void __init at91_add_device_w1(void)
 220 {
 221         at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
 222         at91_set_multi_drive(w1_gpio_pdata.pin, 1);
 223         platform_device_register(&w1_device);
 224 }
 225
 226 #endif
 227
 228
 229 static struct i2c_board_info __initdata foxg20_i2c_devices[] = {
 230         {
 231                 I2C_BOARD_INFO("24c512", 0x50),
 232         },
 233 };
 234
 235
 236 static void __init foxg20_board_init(void)
 237 {
 238         /* Serial */
 239         at91_add_device_serial();
 240         /* USB Host */
 241         at91_add_device_usbh(&foxg20_usbh_data);
 242         /* USB Device */
 243         at91_add_device_udc(&foxg20_udc_data);
 244         /* SPI */
 245         at91_add_device_spi(foxg20_spi_devices, ARRAY_SIZE(foxg20_spi_devices));
 246         /* Ethernet */
 247         at91_add_device_eth(&foxg20_macb_data);
 248         /* MMC */
 249         at91_add_device_mmc(0, &foxg20_mmc_data);
 250         /* I2C */
 251         at91_add_device_i2c(foxg20_i2c_devices, ARRAY_SIZE(foxg20_i2c_devices));
 252         /* LEDs */
 253         at91_gpio_leds(foxg20_leds, ARRAY_SIZE(foxg20_leds));
 254         /* Push Buttons */
 255         foxg20_add_device_buttons();
 256 #if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE)
 257         at91_add_device_w1();
 258 #endif
 259 }
 260
 261 MACHINE_START(ACMENETUSFOXG20, "Acme Systems srl FOX Board G20")
 262         /* Maintainer: Sergio Tanzilli */
 263         .timer          = &at91sam926x_timer,
 264         .map_io         = at91_map_io,
 265         .init_early     = foxg20_init_early,
 266         .init_irq       = at91_init_irq_default,
 267         .init_machine   = foxg20_board_init,
 268 MACHINE_END