mach-mx31lite.c

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/*
 *  Copyright (C) 2000 Deep Blue Solutions Ltd
 *  Copyright (C) 2002 Shane Nay ([email protected])
 *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
 *  Copyright (C) 2009 Daniel Mack <[email protected]>
 *
 * 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.
 */

#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/moduleparam.h>
#include <linux/smsc911x.h>
#include <linux/mfd/mc13783.h>
#include <linux/spi/spi.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>
#include <linux/mtd/physmap.h>
#include <linux/delay.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/mach/map.h>
#include <asm/page.h>
#include <asm/setup.h>

#include <mach/hardware.h>
#include <mach/common.h>
#include <mach/board-mx31lite.h>
#include <mach/iomux-mx3.h>
#include <mach/ulpi.h>

#include "devices-imx31.h"

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

static unsigned int mx31lite_pins[] = {
    /* LAN9117 IRQ pin */
    IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
    /* SPI 1 */
    MX31_PIN_CSPI2_SCLK__SCLK,
    MX31_PIN_CSPI2_MOSI__MOSI,
    MX31_PIN_CSPI2_MISO__MISO,
    MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
    MX31_PIN_CSPI2_SS0__SS0,
    MX31_PIN_CSPI2_SS1__SS1,
    MX31_PIN_CSPI2_SS2__SS2,
};

static const struct mxc_nand_platform_data
mx31lite_nand_board_info __initconst  = {
    .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      = MX31_CS4_BASE_ADDR,
        .end        = MX31_CS4_BASE_ADDR + 0x100,
        .flags      = IORESOURCE_MEM,
    }, {
        /* irq number is run-time assigned */
        .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,
    },
};

/*
 * SPI
 *
 * The MC13783 is the only hard-wired SPI device on the module.
 */

static int spi_internal_chipselect[] = {
    MXC_SPI_CS(0),
};

static const struct spi_imx_master spi1_pdata __initconst = {
    .chipselect = spi_internal_chipselect,
    .num_chipselect = ARRAY_SIZE(spi_internal_chipselect),
};

static struct mc13xxx_platform_data mc13783_pdata __initdata = {
    .flags = MC13XXX_USE_RTC,
};

static struct spi_board_info mc13783_spi_dev __initdata = {
    .modalias       = "mc13783",
    .max_speed_hz   = 1000000,
    .bus_num    = 1,
    .chip_select    = 0,
    .platform_data  = &mc13783_pdata,
    /* irq number is run-time assigned */
};

/*
 * USB
 */

#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
            PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)

static int usbh2_init(struct platform_device *pdev)
{
    int pins[] = {
        MX31_PIN_USBH2_DATA0__USBH2_DATA0,
        MX31_PIN_USBH2_DATA1__USBH2_DATA1,
        MX31_PIN_USBH2_CLK__USBH2_CLK,
        MX31_PIN_USBH2_DIR__USBH2_DIR,
        MX31_PIN_USBH2_NXT__USBH2_NXT,
        MX31_PIN_USBH2_STP__USBH2_STP,
    };

    mxc_iomux_setup_multiple_pins(pins, ARRAY_SIZE(pins), "USB H2");

    mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG);
    mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG);

    mxc_iomux_set_gpr(MUX_PGP_UH2, true);

    /* chip select */
    mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_DTR_DCE1, IOMUX_CONFIG_GPIO),
                "USBH2_CS");
    gpio_request(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), "USBH2 CS");
    gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), 0);

    mdelay(10);

    return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
}

static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
    .init   = usbh2_init,
    .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
};

/*
 * NOR flash
 */

static struct physmap_flash_data nor_flash_data = {
    .width  = 2,
};

static struct resource nor_flash_resource = {
    .start  = 0xa0000000,
    .end    = 0xa1ffffff,
    .flags  = IORESOURCE_MEM,
};

static struct platform_device physmap_flash_device = {
    .name   = "physmap-flash",
    .id     = 0,
    .dev    = {
        .platform_data  = &nor_flash_data,
    },
    .resource = &nor_flash_resource,
    .num_resources = 1,
};



/*
 * This structure defines the MX31 memory map.
 */
static struct map_desc mx31lite_io_desc[] __initdata = {
    {
        .virtual = (unsigned long)MX31_CS4_BASE_ADDR_VIRT,
        .pfn = __phys_to_pfn(MX31_CS4_BASE_ADDR),
        .length = MX31_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));
}

static int mx31lite_baseboard;
core_param(mx31lite_baseboard, mx31lite_baseboard, int, 0444);

static struct regulator_consumer_supply dummy_supplies[] = {
    REGULATOR_SUPPLY("vdd33a", "smsc911x"),
    REGULATOR_SUPPLY("vddvario", "smsc911x"),
};

static void __init mx31lite_init(void)
{
    int ret;

    imx31_soc_init();

    switch (mx31lite_baseboard) {
    case MX31LITE_NOBOARD:
        break;
    case MX31LITE_DB:
        mx31lite_db_init();
        break;
    default:
        printk(KERN_ERR "Illegal mx31lite_baseboard type %d\n",
                mx31lite_baseboard);
    }

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

    /* NOR and NAND flash */
    platform_device_register(&physmap_flash_device);
    imx31_add_mxc_nand(&mx31lite_nand_board_info);

    imx31_add_spi_imx1(&spi1_pdata);
    mc13783_spi_dev.irq = gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
    spi_register_board_info(&mc13783_spi_dev, 1);

    /* USB */
    usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
            ULPI_OTG_DRVVBUS_EXT);
    if (usbh2_pdata.otg)
        imx31_add_mxc_ehci_hs(2, &usbh2_pdata);

    regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));

    /* 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));
        smsc911x_resources[1].start =
            gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SFS6));
        smsc911x_resources[1].end =
            gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SFS6));
        platform_device_register(&smsc911x_device);
    }
}

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

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

MACHINE_START(MX31LITE, "LogicPD i.MX31 SOM")
    /* Maintainer: Freescale Semiconductor, Inc. */
    .atag_offset = 0x100,
    .map_io = mx31lite_map_io,
    .init_early = imx31_init_early,
    .init_irq = mx31_init_irq,
    .handle_irq = imx31_handle_irq,
    .timer = &mx31lite_timer,
    .init_machine = mx31lite_init,
    .restart    = mxc_restart,
MACHINE_END