board-pcontrol-g20.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
 */
/*
 * copied and adjusted from board-stamp9g20.c
 * by Peter Gsellmann <[email protected]>
 */

#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 <mach/stamp9g20.h>

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


static void __init pcontrol_g20_init_early(void)
{
    stamp9g20_init_early();
}

static struct sam9_smc_config __initdata pcontrol_smc_config[2] = { {
    .ncs_read_setup     = 16,
    .nrd_setup      = 18,
    .ncs_write_setup    = 16,
    .nwe_setup      = 18,

    .ncs_read_pulse     = 63,
    .nrd_pulse      = 55,
    .ncs_write_pulse    = 63,
    .nwe_pulse      = 55,

    .read_cycle     = 127,
    .write_cycle        = 127,

    .mode           = AT91_SMC_READMODE | AT91_SMC_WRITEMODE
            | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_SELECT
            | AT91_SMC_DBW_8 | AT91_SMC_PS_4
            | AT91_SMC_TDFMODE,
    .tdf_cycles     = 3,
}, {
    .ncs_read_setup     = 0,
    .nrd_setup      = 0,
    .ncs_write_setup    = 0,
    .nwe_setup      = 1,

    .ncs_read_pulse     = 8,
    .nrd_pulse      = 8,
    .ncs_write_pulse    = 5,
    .nwe_pulse      = 4,

    .read_cycle     = 8,
    .write_cycle        = 7,

    .mode           = AT91_SMC_READMODE | AT91_SMC_WRITEMODE
            | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_SELECT
            | AT91_SMC_DBW_16 | AT91_SMC_PS_8
            | AT91_SMC_TDFMODE,
    .tdf_cycles     = 1,
} };

static void __init add_device_pcontrol(void)
{
    /* configure chip-select 4 (IO compatible to 8051  X4 ) */
    sam9_smc_configure(0, 4, &pcontrol_smc_config[0]);
    /* configure chip-select 7 (FerroRAM 256KiBx16bit MR2A16A  D4 ) */
    sam9_smc_configure(0, 7, &pcontrol_smc_config[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 pcontrol_g20_udc_data = {
    .vbus_pin   = AT91_PIN_PA22,    /* Detect +5V bus voltage */
    .pullup_pin = AT91_PIN_PA4,     /* K-state, active low */
};


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


/*
 * I2C devices: eeprom and phy/switch
 */
static struct i2c_board_info __initdata pcontrol_g20_i2c_devices[] = {
{       /* D7  address width=2, 8KiB */
    I2C_BOARD_INFO("24c64", 0x50)
}, {        /* D8  address width=1, 1 byte has 32 bits! */
    I2C_BOARD_INFO("lan9303", 0x0a)
}, };


/*
 * LEDs
 */
static struct gpio_led pcontrol_g20_leds[] = {
    {
        .name           = "LED1",   /* red  H5 */
        .gpio           = AT91_PIN_PB18,
        .active_low     = 1,
        .default_trigger    = "none",   /* supervisor */
    }, {
        .name           = "LED2",   /* yellow  H7 */
        .gpio           = AT91_PIN_PB19,
        .active_low     = 1,
        .default_trigger    = "mmc0",   /* SD-card activity */
    }, {
        .name           = "LED3",   /* green  H2 */
        .gpio           = AT91_PIN_PB20,
        .active_low     = 1,
        .default_trigger    = "heartbeat",  /* blinky */
    }, {
        .name           = "LED4",   /* red  H3 */
        .gpio           = AT91_PIN_PC6,
        .active_low     = 1,
        .default_trigger    = "none",   /* connection lost */
    }, {
        .name           = "LED5",   /* yellow  H6 */
        .gpio           = AT91_PIN_PC7,
        .active_low     = 1,
        .default_trigger    = "none",   /* unsent data */
    }, {
        .name           = "LED6",   /* green  H1 */
        .gpio           = AT91_PIN_PC9,
        .active_low     = 1,
        .default_trigger    = "none",   /* snafu */
    }
};


/*
 * SPI devices
 */
static struct spi_board_info pcontrol_g20_spi_devices[] = {
    {
        .modalias   = "spidev", /* HMI port  X4 */
        .chip_select    = 1,
        .max_speed_hz   = 50 * 1000 * 1000,
        .bus_num    = 0,
    }, {
        .modalias   = "spidev", /* piggyback  A2 */
        .chip_select    = 0,
        .max_speed_hz   = 50 * 1000 * 1000,
        .bus_num    = 1,
    },
};


static void __init pcontrol_g20_board_init(void)
{
    /* USART0 on ttyS1. (Rx, Tx, CTS, RTS) piggyback  A2 */
    at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS
                        | ATMEL_UART_RTS);

    /* USART1 on ttyS2. (Rx, Tx, CTS, RTS) isolated RS485  X5 */
    at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS
                        | ATMEL_UART_RTS);

    /* USART2 on ttyS3. (Rx, Tx)  9bit-Bus  Multidrop-mode  X4 */
    at91_register_uart(AT91SAM9260_ID_US4, 3, 0);
    stamp9g20_board_init();
    at91_add_device_usbh(&usbh_data);
    at91_add_device_eth(&macb_data);
    at91_add_device_i2c(pcontrol_g20_i2c_devices,
        ARRAY_SIZE(pcontrol_g20_i2c_devices));
    add_device_pcontrol();
    at91_add_device_spi(pcontrol_g20_spi_devices,
        ARRAY_SIZE(pcontrol_g20_spi_devices));
    at91_add_device_udc(&pcontrol_g20_udc_data);
    at91_gpio_leds(pcontrol_g20_leds,
        ARRAY_SIZE(pcontrol_g20_leds));
    /* piggyback  A2 */
    at91_set_gpio_output(AT91_PIN_PB31, 1);
}


MACHINE_START(PCONTROL_G20, "PControl G20")
    /* Maintainer: [email protected] */
    .timer      = &at91sam926x_timer,
    .map_io     = at91_map_io,
    .handle_irq = at91_aic_handle_irq,
    .init_early = pcontrol_g20_init_early,
    .init_irq   = at91_init_irq_default,
    .init_machine   = pcontrol_g20_board_init,
MACHINE_END