board-foxg20.c

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/*
 *  Copyright (C) 2005 SAN People
 *  Copyright (C) 2008 Atmel
 *  Copyright (C) 2010 Lee McLoughlin - [email protected]
 *  Copyright (C) 2010 Sergio Tanzilli - [email protected]
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <linux/types.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/spi/at73c213.h>
#include <linux/gpio.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/clk.h>
#include <linux/w1-gpio.h>

#include <mach/hardware.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
#include <asm/irq.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>

#include <mach/board.h>
#include <mach/at91_aic.h>
#include <mach/at91sam9_smc.h>

#include "sam9_smc.h"
#include "generic.h"

/*
 * The FOX Board G20 hardware comes as the "Netus G20" board with
 * just the cpu, ram, dataflash and two header connectors.
 * This is plugged into the FOX Board which provides the ethernet,
 * usb, rtc, leds, switch, ...
 *
 * For more info visit: http://www.acmesystems.it/foxg20
 */


static void __init foxg20_init_early(void)
{
    /* Initialize processor: 18.432 MHz crystal */
    at91_initialize(18432000);
}

/*
 * USB Host port
 */
static struct at91_usbh_data __initdata foxg20_usbh_data = {
    .ports      = 2,
    .vbus_pin   = {-EINVAL, -EINVAL},
    .overcurrent_pin= {-EINVAL, -EINVAL},
};

/*
 * USB Device port
 */
static struct at91_udc_data __initdata foxg20_udc_data = {
    .vbus_pin   = AT91_PIN_PC6,
    .pullup_pin = -EINVAL,      /* pull-up driven by UDC */
};


/*
 * SPI devices.
 */
static struct spi_board_info foxg20_spi_devices[] = {
#if !IS_ENABLED(CONFIG_MMC_ATMELMCI)
    {
        .modalias   = "mtd_dataflash",
        .chip_select    = 1,
        .max_speed_hz   = 15 * 1000 * 1000,
        .bus_num    = 0,
    },
#endif
};


/*
 * MACB Ethernet device
 */
static struct macb_platform_data __initdata foxg20_macb_data = {
    .phy_irq_pin    = AT91_PIN_PA7,
    .is_rmii    = 1,
};

/*
 * MCI (SD/MMC)
 * det_pin, wp_pin and vcc_pin are not connected
 */
static struct mci_platform_data __initdata foxg20_mci0_data = {
    .slot[1] = {
        .bus_width  = 4,
        .detect_pin = -EINVAL,
        .wp_pin     = -EINVAL,
    },
};


/*
 * LEDs
 */
static struct gpio_led foxg20_leds[] = {
    {   /* user led, red */
        .name           = "user_led",
        .gpio           = AT91_PIN_PC7,
        .active_low     = 0,
        .default_trigger    = "heartbeat",
    },
};


/*
 * GPIO Buttons
 */
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
static struct gpio_keys_button foxg20_buttons[] = {
    {
        .gpio       = AT91_PIN_PC4,
        .code       = BTN_1,
        .desc       = "Button 1",
        .active_low = 1,
        .wakeup     = 1,
    },
};

static struct gpio_keys_platform_data foxg20_button_data = {
    .buttons    = foxg20_buttons,
    .nbuttons   = ARRAY_SIZE(foxg20_buttons),
};

static struct platform_device foxg20_button_device = {
    .name       = "gpio-keys",
    .id     = -1,
    .num_resources  = 0,
    .dev        = {
        .platform_data  = &foxg20_button_data,
    }
};

static void __init foxg20_add_device_buttons(void)
{
    at91_set_gpio_input(AT91_PIN_PC4, 1);   /* btn1 */
    at91_set_deglitch(AT91_PIN_PC4, 1);

    platform_device_register(&foxg20_button_device);
}
#else
static void __init foxg20_add_device_buttons(void) {}
#endif


#if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE)
static struct w1_gpio_platform_data w1_gpio_pdata = {
    /* If you choose to use a pin other than PB16 it needs to be 3.3V */
    .pin        = AT91_PIN_PB16,
    .is_open_drain  = 1,
};

static struct platform_device w1_device = {
    .name           = "w1-gpio",
    .id         = -1,
    .dev.platform_data  = &w1_gpio_pdata,
};

static void __init at91_add_device_w1(void)
{
    at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
    at91_set_multi_drive(w1_gpio_pdata.pin, 1);
    platform_device_register(&w1_device);
}

#endif


static struct i2c_board_info __initdata foxg20_i2c_devices[] = {
    {
        I2C_BOARD_INFO("24c512", 0x50),
    },
};


static void __init foxg20_board_init(void)
{
    /* Serial */
    /* DBGU on ttyS0. (Rx & Tx only) */
    at91_register_uart(0, 0, 0);

    /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
    at91_register_uart(AT91SAM9260_ID_US0, 1,
                ATMEL_UART_CTS
                | ATMEL_UART_RTS
                | ATMEL_UART_DTR
                | ATMEL_UART_DSR
                | ATMEL_UART_DCD
                | ATMEL_UART_RI);

    /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
    at91_register_uart(AT91SAM9260_ID_US1, 2,
        ATMEL_UART_CTS
        | ATMEL_UART_RTS);

    /* USART2 on ttyS3. (Rx & Tx only) */
    at91_register_uart(AT91SAM9260_ID_US2, 3, 0);

    /* USART3 on ttyS4. (Rx, Tx, RTS, CTS) */
    at91_register_uart(AT91SAM9260_ID_US3, 4,
        ATMEL_UART_CTS
        | ATMEL_UART_RTS);

    /* USART4 on ttyS5. (Rx & Tx only) */
    at91_register_uart(AT91SAM9260_ID_US4, 5, 0);

    /* USART5 on ttyS6. (Rx & Tx only) */
    at91_register_uart(AT91SAM9260_ID_US5, 6, 0);

    /* Set the internal pull-up resistor on DRXD */
    at91_set_A_periph(AT91_PIN_PB14, 1);
    at91_add_device_serial();
    /* USB Host */
    at91_add_device_usbh(&foxg20_usbh_data);
    /* USB Device */
    at91_add_device_udc(&foxg20_udc_data);
    /* SPI */
    at91_add_device_spi(foxg20_spi_devices, ARRAY_SIZE(foxg20_spi_devices));
    /* Ethernet */
    at91_add_device_eth(&foxg20_macb_data);
    /* MMC */
    at91_add_device_mci(0, &foxg20_mci0_data);
    /* I2C */
    at91_add_device_i2c(foxg20_i2c_devices, ARRAY_SIZE(foxg20_i2c_devices));
    /* LEDs */
    at91_gpio_leds(foxg20_leds, ARRAY_SIZE(foxg20_leds));
    /* Push Buttons */
    foxg20_add_device_buttons();
#if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE)
    at91_add_device_w1();
#endif
}

MACHINE_START(ACMENETUSFOXG20, "Acme Systems srl FOX Board G20")
    /* Maintainer: Sergio Tanzilli */
    .timer      = &at91sam926x_timer,
    .map_io     = at91_map_io,
    .handle_irq = at91_aic_handle_irq,
    .init_early = foxg20_init_early,
    .init_irq   = at91_init_irq_default,
    .init_machine   = foxg20_board_init,
MACHINE_END