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mx31lite.c

/*
 *  Copyright (C) 2000 Deep Blue Solutions Ltd
 *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
 *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
 *
 * 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/types.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/memory.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/smsc911x.h>

#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/mach/map.h>
#include <mach/common.h>
#include <asm/page.h>
#include <asm/setup.h>
#include <mach/board-mx31lite.h>
#include <mach/imx-uart.h>
#include <mach/iomux-mx3.h>
#include <mach/irqs.h>
#include <mach/mxc_nand.h>
#include "devices.h"

/*
 * This file contains the board-specific initialization routines.
 */

static unsigned int mx31lite_pins[] = {
      /* UART1 */
      MX31_PIN_CTS1__CTS1,
      MX31_PIN_RTS1__RTS1,
      MX31_PIN_TXD1__TXD1,
      MX31_PIN_RXD1__RXD1,
      /* LAN9117 IRQ pin */
      IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
};

static struct imxuart_platform_data uart_pdata = {
      .flags = IMXUART_HAVE_RTSCTS,
};

static struct mxc_nand_platform_data mx31lite_nand_board_info = {
      .width = 1,
      .hw_ecc = 1,
};

static struct smsc911x_platform_config smsc911x_config = {
      .irq_polarity     = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
      .irq_type   = SMSC911X_IRQ_TYPE_PUSH_PULL,
      .flags            = SMSC911X_USE_16BIT,
};

static struct resource smsc911x_resources[] = {
      {
            .start            = CS4_BASE_ADDR,
            .end        = CS4_BASE_ADDR + 0x100,
            .flags            = IORESOURCE_MEM,
      }, {
            .start            = IOMUX_TO_IRQ(MX31_PIN_SFS6),
            .end        = IOMUX_TO_IRQ(MX31_PIN_SFS6),
            .flags            = IORESOURCE_IRQ,
      },
};

static struct platform_device smsc911x_device = {
      .name       = "smsc911x",
      .id         = -1,
      .num_resources    = ARRAY_SIZE(smsc911x_resources),
      .resource   = smsc911x_resources,
      .dev        = {
            .platform_data = &smsc911x_config,
      },
};

/*
 * This structure defines the MX31 memory map.
 */
static struct map_desc mx31lite_io_desc[] __initdata = {
      {
            .virtual = SPBA0_BASE_ADDR_VIRT,
            .pfn = __phys_to_pfn(SPBA0_BASE_ADDR),
            .length = SPBA0_SIZE,
            .type = MT_DEVICE_NONSHARED
      }, {
            .virtual = CS4_BASE_ADDR_VIRT,
            .pfn = __phys_to_pfn(CS4_BASE_ADDR),
            .length = CS4_SIZE,
            .type = MT_DEVICE
      }
};

/*
 * Set up static virtual mappings.
 */
void __init mx31lite_map_io(void)
{
      mx31_map_io();
      iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
}

/*
 * Board specific initialization.
 */
static void __init mxc_board_init(void)
{
      int ret;

      mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
                              "mx31lite");

      mxc_register_device(&mxc_uart_device0, &uart_pdata);
      mxc_register_device(&mxc_nand_device, &mx31lite_nand_board_info);

      /* SMSC9117 IRQ pin */
      ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
      if (ret)
            pr_warning("could not get LAN irq gpio\n");
      else {
            gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6));
            platform_device_register(&smsc911x_device);
      }
}

static void __init mx31lite_timer_init(void)
{
      mx31_clocks_init(26000000);
}

struct sys_timer mx31lite_timer = {
      .init = mx31lite_timer_init,
};

/*
 * The following uses standard kernel macros defined in arch.h in order to
 * initialize __mach_desc_MX31LITE data structure.
 */

MACHINE_START(MX31LITE, "LogicPD MX31 LITEKIT")
      /* Maintainer: Freescale Semiconductor, Inc. */
      .phys_io        = AIPS1_BASE_ADDR,
      .io_pg_offst    = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
      .boot_params    = PHYS_OFFSET + 0x100,
      .map_io         = mx31lite_map_io,
      .init_irq       = mx31_init_irq,
      .init_machine   = mxc_board_init,
      .timer          = &mx31lite_timer,
MACHINE_END

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