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stmp37xx_devb.c

/*
 * Freescale STMP37XX development board support
 *
 * Embedded Alley Solutions, Inc <source@embeddedalley.com>
 *
 * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
 * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
 */

/*
 * The code contained herein is licensed under the GNU General Public
 * License. You may obtain a copy of the GNU General Public License
 * Version 2 or later at the following locations:
 *
 * http://www.opensource.org/licenses/gpl-license.html
 * http://www.gnu.org/copyleft/gpl.html
 */
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>

#include <mach/stmp3xxx.h>
#include <mach/pins.h>
#include <mach/pinmux.h>
#include "stmp37xx.h"

/*
 * List of STMP37xx development board specific devices
 */
static struct platform_device *stmp37xx_devb_devices[] = {
      &stmp3xxx_dbguart,
      &stmp3xxx_appuart,
};

static struct pin_desc dbguart_pins_0[] = {
      { PINID_PWM0, PIN_FUN3, },
      { PINID_PWM1, PIN_FUN3, },
};

struct pin_desc appuart_pins_0[] = {
      { PINID_UART2_CTS, PIN_FUN1, PIN_4MA, PIN_1_8V, 0, },
      { PINID_UART2_RTS, PIN_FUN1, PIN_4MA, PIN_1_8V, 0, },
      { PINID_UART2_RX, PIN_FUN1, PIN_4MA, PIN_1_8V, 0, },
      { PINID_UART2_TX, PIN_FUN1, PIN_4MA, PIN_1_8V, 0, },
};

static struct pin_group appuart_pins[] = {
      [0] = {
            .pins       = appuart_pins_0,
            .nr_pins    = ARRAY_SIZE(appuart_pins_0),
      },
      /* 37xx has the only app uart */
};

static struct pin_group dbguart_pins[] = {
      [0] = {
            .pins       = dbguart_pins_0,
            .nr_pins    = ARRAY_SIZE(dbguart_pins_0),
      },
};

static int dbguart_pins_control(int id, int request)
{
      int r = 0;

      if (request)
            r = stmp3xxx_request_pin_group(&dbguart_pins[id], "debug uart");
      else
            stmp3xxx_release_pin_group(&dbguart_pins[id], "debug uart");
      return r;
}


static void __init stmp37xx_devb_init(void)
{
      stmp3xxx_pinmux_init(NR_REAL_IRQS);

      /* Init STMP3xxx platform */
      stmp3xxx_init();

      stmp3xxx_dbguart.dev.platform_data = dbguart_pins_control;
      stmp3xxx_appuart.dev.platform_data = appuart_pins;

      /* Add STMP37xx development board devices */
      platform_add_devices(stmp37xx_devb_devices,
                  ARRAY_SIZE(stmp37xx_devb_devices));
}

MACHINE_START(STMP37XX, "STMP37XX")
      .phys_io    = 0x80000000,
      .io_pg_offst      = ((0xf0000000) >> 18) & 0xfffc,
      .boot_params      = 0x40000100,
      .map_io           = stmp37xx_map_io,
      .init_irq   = stmp37xx_init_irq,
      .timer            = &stmp3xxx_timer,
      .init_machine     = stmp37xx_devb_init,
MACHINE_END

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