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/at91sam9_smc.h>
  45
  46 #include "at91_aic.h"
  47 #include "board.h"
  48 #include "sam9_smc.h"
  49 #include "generic.h"
  50 #include "gpio.h"
  51
  52 /*
  53  * The FOX Board G20 hardware comes as the "Netus G20" board with
  54  * just the cpu, ram, dataflash and two header connectors.
  55  * This is plugged into the FOX Board which provides the ethernet,
  56  * usb, rtc, leds, switch, ...
  57  *
  58  * For more info visit: http://www.acmesystems.it/foxg20
  59  */
  60
  61
  62 static void __init foxg20_init_early(void)
  63 {
  64         /* Initialize processor: 18.432 MHz crystal */
  65         at91_initialize(18432000);
  66 }
  67
  68 /*
  69  * USB Host port
  70  */
  71 static struct at91_usbh_data __initdata foxg20_usbh_data = {
  72         .ports          = 2,
  73         .vbus_pin       = {-EINVAL, -EINVAL},
  74         .overcurrent_pin= {-EINVAL, -EINVAL},
  75 };
  76
  77 /*
  78  * USB Device port
  79  */
  80 static struct at91_udc_data __initdata foxg20_udc_data = {
  81         .vbus_pin       = AT91_PIN_PC6,
  82         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
  83 };
  84
  85
  86 /*
  87  * SPI devices.
  88  */
  89 static struct spi_board_info foxg20_spi_devices[] = {
  90 #if !IS_ENABLED(CONFIG_MMC_ATMELMCI)
  91         {
  92                 .modalias       = "mtd_dataflash",
  93                 .chip_select    = 1,
  94                 .max_speed_hz   = 15 * 1000 * 1000,
  95                 .bus_num        = 0,
  96         },
  97 #endif
  98 };
  99
 100
 101 /*
 102  * MACB Ethernet device
 103  */
 104 static struct macb_platform_data __initdata foxg20_macb_data = {
 105         .phy_irq_pin    = AT91_PIN_PA7,
 106         .is_rmii        = 1,
 107 };
 108
 109 /*
 110  * MCI (SD/MMC)
 111  * det_pin, wp_pin and vcc_pin are not connected
 112  */
 113 static struct mci_platform_data __initdata foxg20_mci0_data = {
 114         .slot[1] = {
 115                 .bus_width      = 4,
 116                 .detect_pin     = -EINVAL,
 117                 .wp_pin         = -EINVAL,
 118         },
 119 };
 120
 121
 122 /*
 123  * LEDs
 124  */
 125 static struct gpio_led foxg20_leds[] = {
 126         {       /* user led, red */
 127                 .name                   = "user_led",
 128                 .gpio                   = AT91_PIN_PC7,
 129                 .active_low             = 0,
 130                 .default_trigger        = "heartbeat",
 131         },
 132 };
 133
 134
 135 /*
 136  * GPIO Buttons
 137  */
 138 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 139 static struct gpio_keys_button foxg20_buttons[] = {
 140         {
 141                 .gpio           = AT91_PIN_PC4,
 142                 .code           = BTN_1,
 143                 .desc           = "Button 1",
 144                 .active_low     = 1,
 145                 .wakeup         = 1,
 146         },
 147 };
 148
 149 static struct gpio_keys_platform_data foxg20_button_data = {
 150         .buttons        = foxg20_buttons,
 151         .nbuttons       = ARRAY_SIZE(foxg20_buttons),
 152 };
 153
 154 static struct platform_device foxg20_button_device = {
 155         .name           = "gpio-keys",
 156         .id             = -1,
 157         .num_resources  = 0,
 158         .dev            = {
 159                 .platform_data  = &foxg20_button_data,
 160         }
 161 };
 162
 163 static void __init foxg20_add_device_buttons(void)
 164 {
 165         at91_set_gpio_input(AT91_PIN_PC4, 1);   /* btn1 */
 166         at91_set_deglitch(AT91_PIN_PC4, 1);
 167
 168         platform_device_register(&foxg20_button_device);
 169 }
 170 #else
 171 static void __init foxg20_add_device_buttons(void) {}
 172 #endif
 173
 174
 175 #if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE)
 176 static struct w1_gpio_platform_data w1_gpio_pdata = {
 177         /* If you choose to use a pin other than PB16 it needs to be 3.3V */
 178         .pin            = AT91_PIN_PB16,
 179         .is_open_drain  = 1,
 180         .ext_pullup_enable_pin  = -EINVAL,
 181 };
 182
 183 static struct platform_device w1_device = {
 184         .name                   = "w1-gpio",
 185         .id                     = -1,
 186         .dev.platform_data      = &w1_gpio_pdata,
 187 };
 188
 189 static void __init at91_add_device_w1(void)
 190 {
 191         at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
 192         at91_set_multi_drive(w1_gpio_pdata.pin, 1);
 193         platform_device_register(&w1_device);
 194 }
 195
 196 #endif
 197
 198
 199 static struct i2c_board_info __initdata foxg20_i2c_devices[] = {
 200         {
 201                 I2C_BOARD_INFO("24c512", 0x50),
 202         },
 203 };
 204
 205
 206 static void __init foxg20_board_init(void)
 207 {
 208         /* Serial */
 209         /* DBGU on ttyS0. (Rx & Tx only) */
 210         at91_register_uart(0, 0, 0);
 211
 212         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
 213         at91_register_uart(AT91SAM9260_ID_US0, 1,
 214                                 ATMEL_UART_CTS
 215                                 | ATMEL_UART_RTS
 216                                 | ATMEL_UART_DTR
 217                                 | ATMEL_UART_DSR
 218                                 | ATMEL_UART_DCD
 219                                 | ATMEL_UART_RI);
 220
 221         /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
 222         at91_register_uart(AT91SAM9260_ID_US1, 2,
 223                 ATMEL_UART_CTS
 224                 | ATMEL_UART_RTS);
 225
 226         /* USART2 on ttyS3. (Rx & Tx only) */
 227         at91_register_uart(AT91SAM9260_ID_US2, 3, 0);
 228
 229         /* USART3 on ttyS4. (Rx, Tx, RTS, CTS) */
 230         at91_register_uart(AT91SAM9260_ID_US3, 4,
 231                 ATMEL_UART_CTS
 232                 | ATMEL_UART_RTS);
 233
 234         /* USART4 on ttyS5. (Rx & Tx only) */
 235         at91_register_uart(AT91SAM9260_ID_US4, 5, 0);
 236
 237         /* USART5 on ttyS6. (Rx & Tx only) */
 238         at91_register_uart(AT91SAM9260_ID_US5, 6, 0);
 239
 240         /* Set the internal pull-up resistor on DRXD */
 241         at91_set_A_periph(AT91_PIN_PB14, 1);
 242         at91_add_device_serial();
 243         /* USB Host */
 244         at91_add_device_usbh(&foxg20_usbh_data);
 245         /* USB Device */
 246         at91_add_device_udc(&foxg20_udc_data);
 247         /* SPI */
 248         at91_add_device_spi(foxg20_spi_devices, ARRAY_SIZE(foxg20_spi_devices));
 249         /* Ethernet */
 250         at91_add_device_eth(&foxg20_macb_data);
 251         /* MMC */
 252         at91_add_device_mci(0, &foxg20_mci0_data);
 253         /* I2C */
 254         at91_add_device_i2c(foxg20_i2c_devices, ARRAY_SIZE(foxg20_i2c_devices));
 255         /* LEDs */
 256         at91_gpio_leds(foxg20_leds, ARRAY_SIZE(foxg20_leds));
 257         /* Push Buttons */
 258         foxg20_add_device_buttons();
 259 #if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE)
 260         at91_add_device_w1();
 261 #endif
 262 }
 263
 264 MACHINE_START(ACMENETUSFOXG20, "Acme Systems srl FOX Board G20")
 265         /* Maintainer: Sergio Tanzilli */
 266         .init_time      = at91sam926x_pit_init,
 267         .map_io         = at91_map_io,
 268         .handle_irq     = at91_aic_handle_irq,
 269         .init_early     = foxg20_init_early,
 270         .init_irq       = at91_init_irq_default,
 271         .init_machine   = foxg20_board_init,
 272 MACHINE_END