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board-pcontrol-g20.c

/*
 *  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/board.h>
#include <mach/at91sam9_smc.h>
#include <mach/stamp9g20.h>

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


static void __init pcontrol_g20_map_io(void)
{
      stamp9g20_map_io();

      /* 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);
}


static void __init init_irq(void)
{
      at91sam9260_init_interrupts(NULL);
}


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(4, &pcontrol_smc_config[0]);
      /* configure chip-select 7 (FerroRAM 256KiBx16bit MR2A16A  D4 ) */
      sam9_smc_configure(7, &pcontrol_smc_config[1]);
}


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


/*
 * 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 at91_eth_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)
{
      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 */
      .boot_params      = AT91_SDRAM_BASE + 0x100,
      .timer            = &at91sam926x_timer,
      .map_io           = pcontrol_g20_map_io,
      .init_irq   = init_irq,
      .init_machine     = pcontrol_g20_board_init,
MACHINE_END

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