/*
 *  Copyright (C) 2010 Christian Glindkamp <christian.glindkamp@taskit.de>
 *                     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 <pgsellmann@portner-elektronik.at>
 */

#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/at91sam9_smc.h>

#include "at91_aic.h"
#include "board.h"
#include "sam9_smc.h"
#include "generic.h"
#include "stamp9g20.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: pgsellmann@portner-elektronik.at */
        .init_time      = at91sam926x_pit_init,
        .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