board-stamp9g20.c

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/*
 *  Copyright (C) 2010 Christian Glindkamp <[email protected]>
 *                     taskit GmbH
 *
 * 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/mm.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/w1-gpio.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>

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

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


void __init stamp9g20_init_early(void)
{
    /* Initialize processor: 18.432 MHz crystal */
    at91_initialize(18432000);
}

/*
 * NAND flash
 */
static struct atmel_nand_data __initdata nand_data = {
    .ale        = 21,
    .cle        = 22,
    .rdy_pin    = AT91_PIN_PC13,
    .enable_pin = AT91_PIN_PC14,
    .bus_width_16   = 0,
    .det_pin    = -EINVAL,
    .ecc_mode   = NAND_ECC_SOFT,
};

static struct sam9_smc_config __initdata nand_smc_config = {
    .ncs_read_setup     = 0,
    .nrd_setup      = 2,
    .ncs_write_setup    = 0,
    .nwe_setup      = 2,

    .ncs_read_pulse     = 4,
    .nrd_pulse      = 4,
    .ncs_write_pulse    = 4,
    .nwe_pulse      = 4,

    .read_cycle     = 7,
    .write_cycle        = 7,

    .mode           = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
    .tdf_cycles     = 3,
};

static void __init add_device_nand(void)
{
    /* configure chip-select 3 (NAND) */
    sam9_smc_configure(0, 3, &nand_smc_config);

    at91_add_device_nand(&nand_data);
}


/*
 * MCI (SD/MMC)
 * det_pin, wp_pin and vcc_pin are not connected
 */
static struct mci_platform_data __initdata mmc_data = {
    .slot[0] = {
        .bus_width  = 4,
        .detect_pin = -1,
        .wp_pin     = -1,
    },
};


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


/*
 * USB Device port
 */
static struct at91_udc_data __initdata portuxg20_udc_data = {
    .vbus_pin   = AT91_PIN_PC7,
    .pullup_pin = -EINVAL,      /* pull-up driven by UDC */
};

static struct at91_udc_data __initdata stamp9g20evb_udc_data = {
    .vbus_pin   = AT91_PIN_PA22,
    .pullup_pin = -EINVAL,      /* pull-up driven by UDC */
};


/*
 * MACB Ethernet device
 */
static struct macb_platform_data __initdata macb_data = {
    .phy_irq_pin    = AT91_PIN_PA28,
    .is_rmii    = 1,
};


/*
 * LEDs
 */
static struct gpio_led portuxg20_leds[] = {
    {
        .name           = "LED2",
        .gpio           = AT91_PIN_PC5,
        .default_trigger    = "none",
    }, {
        .name           = "LED3",
        .gpio           = AT91_PIN_PC4,
        .default_trigger    = "none",
    }, {
        .name           = "LED4",
        .gpio           = AT91_PIN_PC10,
        .default_trigger    = "heartbeat",
    }
};

static struct gpio_led stamp9g20evb_leds[] = {
    {
        .name           = "D8",
        .gpio           = AT91_PIN_PB18,
        .active_low     = 1,
        .default_trigger    = "none",
    }, {
        .name           = "D9",
        .gpio           = AT91_PIN_PB19,
        .active_low     = 1,
        .default_trigger    = "none",
    }, {
        .name           = "D10",
        .gpio           = AT91_PIN_PB20,
        .active_low     = 1,
        .default_trigger    = "heartbeat",
    }
};


/*
 * SPI devices
 */
static struct spi_board_info portuxg20_spi_devices[] = {
    {
        .modalias   = "spidev",
        .chip_select    = 0,
        .max_speed_hz   = 1 * 1000 * 1000,
        .bus_num    = 0,
    }, {
        .modalias   = "spidev",
        .chip_select    = 0,
        .max_speed_hz   = 1 * 1000 * 1000,
        .bus_num    = 1,
    },
};


/*
 * Dallas 1-Wire
 */
static struct w1_gpio_platform_data w1_gpio_pdata = {
    .pin        = AT91_PIN_PA29,
    .is_open_drain  = 1,
};

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

void add_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);
}


void __init stamp9g20_board_init(void)
{
    /* Serial */
    /* DGBU on ttyS0. (Rx & Tx only) */
    at91_register_uart(0, 0, 0);
    at91_add_device_serial();
    /* NAND */
    add_device_nand();
    /* MMC */
    at91_add_device_mci(0, &mmc_data);
    /* W1 */
    add_w1();
}

static void __init portuxg20_board_init(void)
{
    /* 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, CTS, RTS) */
    at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);

    /* USART2 on ttyS3. (Rx, Tx, CTS, RTS) */
    at91_register_uart(AT91SAM9260_ID_US2, 3, 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);
    stamp9g20_board_init();
    /* USB Host */
    at91_add_device_usbh(&usbh_data);
    /* USB Device */
    at91_add_device_udc(&portuxg20_udc_data);
    /* Ethernet */
    at91_add_device_eth(&macb_data);
    /* I2C */
    at91_add_device_i2c(NULL, 0);
    /* SPI */
    at91_add_device_spi(portuxg20_spi_devices, ARRAY_SIZE(portuxg20_spi_devices));
    /* LEDs */
    at91_gpio_leds(portuxg20_leds, ARRAY_SIZE(portuxg20_leds));
}

static void __init stamp9g20evb_board_init(void)
{
    /* 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);
    stamp9g20_board_init();
    /* USB Host */
    at91_add_device_usbh(&usbh_data);
    /* USB Device */
    at91_add_device_udc(&stamp9g20evb_udc_data);
    /* Ethernet */
    at91_add_device_eth(&macb_data);
    /* I2C */
    at91_add_device_i2c(NULL, 0);
    /* LEDs */
    at91_gpio_leds(stamp9g20evb_leds, ARRAY_SIZE(stamp9g20evb_leds));
}

MACHINE_START(PORTUXG20, "taskit PortuxG20")
    /* Maintainer: taskit GmbH */
    .timer      = &at91sam926x_timer,
    .map_io     = at91_map_io,
    .handle_irq = at91_aic_handle_irq,
    .init_early = stamp9g20_init_early,
    .init_irq   = at91_init_irq_default,
    .init_machine   = portuxg20_board_init,
MACHINE_END

MACHINE_START(STAMP9G20, "taskit Stamp9G20")
    /* Maintainer: taskit GmbH */
    .timer      = &at91sam926x_timer,
    .map_io     = at91_map_io,
    .handle_irq = at91_aic_handle_irq,
    .init_early = stamp9g20_init_early,
    .init_irq   = at91_init_irq_default,
    .init_machine   = stamp9g20evb_board_init,
MACHINE_END