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
  51 /*
  52  * The FOX Board G20 hardware comes as the "Netus G20" board with
  53  * just the cpu, ram, dataflash and two header connectors.
  54  * This is plugged into the FOX Board which provides the ethernet,
  55  * usb, rtc, leds, switch, ...
  56  *
  57  * For more info visit: http://www.acmesystems.it/foxg20
  58  */
  59
  60
  61 static void __init foxg20_init_early(void)
  62 {
  63         /* Initialize processor: 18.432 MHz crystal */
  64         at91_initialize(18432000);
  65 }
  66
  67 /*
  68  * USB Host port
  69  */
  70 static struct at91_usbh_data __initdata foxg20_usbh_data = {
  71         .ports          = 2,
  72         .vbus_pin       = {-EINVAL, -EINVAL},
  73         .overcurrent_pin= {-EINVAL, -EINVAL},
  74 };
  75
  76 /*
  77  * USB Device port
  78  */
  79 static struct at91_udc_data __initdata foxg20_udc_data = {
  80         .vbus_pin       = AT91_PIN_PC6,
  81         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
  82 };
  83
  84
  85 /*
  86  * SPI devices.
  87  */
  88 static struct spi_board_info foxg20_spi_devices[] = {
  89 #if !IS_ENABLED(CONFIG_MMC_ATMELMCI)
  90         {
  91                 .modalias       = "mtd_dataflash",
  92                 .chip_select    = 1,
  93                 .max_speed_hz   = 15 * 1000 * 1000,
  94                 .bus_num        = 0,
  95         },
  96 #endif
  97 };
  98
  99
 100 /*
 101  * MACB Ethernet device
 102  */
 103 static struct macb_platform_data __initdata foxg20_macb_data = {
 104         .phy_irq_pin    = AT91_PIN_PA7,
 105         .is_rmii        = 1,
 106 };
 107
 108 /*
 109  * MCI (SD/MMC)
 110  * det_pin, wp_pin and vcc_pin are not connected
 111  */
 112 static struct mci_platform_data __initdata foxg20_mci0_data = {
 113         .slot[1] = {
 114                 .bus_width      = 4,
 115                 .detect_pin     = -EINVAL,
 116                 .wp_pin         = -EINVAL,
 117         },
 118 };
 119
 120
 121 /*
 122  * LEDs
 123  */
 124 static struct gpio_led foxg20_leds[] = {
 125         {       /* user led, red */
 126                 .name                   = "user_led",
 127                 .gpio                   = AT91_PIN_PC7,
 128                 .active_low             = 0,
 129                 .default_trigger        = "heartbeat",
 130         },
 131 };
 132
 133
 134 /*
 135  * GPIO Buttons
 136  */
 137 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 138 static struct gpio_keys_button foxg20_buttons[] = {
 139         {
 140                 .gpio           = AT91_PIN_PC4,
 141                 .code           = BTN_1,
 142                 .desc           = "Button 1",
 143                 .active_low     = 1,
 144                 .wakeup         = 1,
 145         },
 146 };
 147
 148 static struct gpio_keys_platform_data foxg20_button_data = {
 149         .buttons        = foxg20_buttons,
 150         .nbuttons       = ARRAY_SIZE(foxg20_buttons),
 151 };
 152
 153 static struct platform_device foxg20_button_device = {
 154         .name           = "gpio-keys",
 155         .id             = -1,
 156         .num_resources  = 0,
 157         .dev            = {
 158                 .platform_data  = &foxg20_button_data,
 159         }
 160 };
 161
 162 static void __init foxg20_add_device_buttons(void)
 163 {
 164         at91_set_gpio_input(AT91_PIN_PC4, 1);   /* btn1 */
 165         at91_set_deglitch(AT91_PIN_PC4, 1);
 166
 167         platform_device_register(&foxg20_button_device);
 168 }
 169 #else
 170 static void __init foxg20_add_device_buttons(void) {}
 171 #endif
 172
 173
 174 #if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE)
 175 static struct w1_gpio_platform_data w1_gpio_pdata = {
 176         /* If you choose to use a pin other than PB16 it needs to be 3.3V */
 177         .pin            = AT91_PIN_PB16,
 178         .is_open_drain  = 1,
 179 };
 180
 181 static struct platform_device w1_device = {
 182         .name                   = "w1-gpio",
 183         .id                     = -1,
 184         .dev.platform_data      = &w1_gpio_pdata,
 185 };
 186
 187 static void __init at91_add_device_w1(void)
 188 {
 189         at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
 190         at91_set_multi_drive(w1_gpio_pdata.pin, 1);
 191         platform_device_register(&w1_device);
 192 }
 193
 194 #endif
 195
 196
 197 static struct i2c_board_info __initdata foxg20_i2c_devices[] = {
 198         {
 199                 I2C_BOARD_INFO("24c512", 0x50),
 200         },
 201 };
 202
 203
 204 static void __init foxg20_board_init(void)
 205 {
 206         /* Serial */
 207         /* DBGU on ttyS0. (Rx & Tx only) */
 208         at91_register_uart(0, 0, 0);
 209
 210         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
 211         at91_register_uart(AT91SAM9260_ID_US0, 1,
 212                                 ATMEL_UART_CTS
 213                                 | ATMEL_UART_RTS
 214                                 | ATMEL_UART_DTR
 215                                 | ATMEL_UART_DSR
 216                                 | ATMEL_UART_DCD
 217                                 | ATMEL_UART_RI);
 218
 219         /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
 220         at91_register_uart(AT91SAM9260_ID_US1, 2,
 221                 ATMEL_UART_CTS
 222                 | ATMEL_UART_RTS);
 223
 224         /* USART2 on ttyS3. (Rx & Tx only) */
 225         at91_register_uart(AT91SAM9260_ID_US2, 3, 0);
 226
 227         /* USART3 on ttyS4. (Rx, Tx, RTS, CTS) */
 228         at91_register_uart(AT91SAM9260_ID_US3, 4,
 229                 ATMEL_UART_CTS
 230                 | ATMEL_UART_RTS);
 231
 232         /* USART4 on ttyS5. (Rx & Tx only) */
 233         at91_register_uart(AT91SAM9260_ID_US4, 5, 0);
 234
 235         /* USART5 on ttyS6. (Rx & Tx only) */
 236         at91_register_uart(AT91SAM9260_ID_US5, 6, 0);
 237
 238         /* Set the internal pull-up resistor on DRXD */
 239         at91_set_A_periph(AT91_PIN_PB14, 1);
 240         at91_add_device_serial();
 241         /* USB Host */
 242         at91_add_device_usbh(&foxg20_usbh_data);
 243         /* USB Device */
 244         at91_add_device_udc(&foxg20_udc_data);
 245         /* SPI */
 246         at91_add_device_spi(foxg20_spi_devices, ARRAY_SIZE(foxg20_spi_devices));
 247         /* Ethernet */
 248         at91_add_device_eth(&foxg20_macb_data);
 249         /* MMC */
 250         at91_add_device_mci(0, &foxg20_mci0_data);
 251         /* I2C */
 252         at91_add_device_i2c(foxg20_i2c_devices, ARRAY_SIZE(foxg20_i2c_devices));
 253         /* LEDs */
 254         at91_gpio_leds(foxg20_leds, ARRAY_SIZE(foxg20_leds));
 255         /* Push Buttons */
 256         foxg20_add_device_buttons();
 257 #if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE)
 258         at91_add_device_w1();
 259 #endif
 260 }
 261
 262 MACHINE_START(ACMENETUSFOXG20, "Acme Systems srl FOX Board G20")
 263         /* Maintainer: Sergio Tanzilli */
 264         .timer          = &at91sam926x_timer,
 265         .map_io         = at91_map_io,
 266         .handle_irq     = at91_aic_handle_irq,
 267         .init_early     = foxg20_init_early,
 268         .init_irq       = at91_init_irq_default,
 269         .init_machine   = foxg20_board_init,
 270 MACHINE_END