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mach-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.
 *  Copyright (C) 2009 Daniel Mack <daniel@caiaq.de>
 *
 * 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/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 <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/irqs.h>
#include <mach/ulpi.h>

#include "devices-imx31.h"
#include "devices.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,
      }, {
            .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,
      },
};

/*
 * 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 mc13783_platform_data mc13783_pdata __initdata = {
      .flags  = MC13783_USE_RTC |
              MC13783_USE_REGULATOR,
};

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        = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
};

/*
 * USB
 */

#if defined(CONFIG_USB_ULPI)
#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);

      return 0;
}

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

/*
 * 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 = 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 void __init mxc_board_init(void)
{
      int ret;

      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);
      spi_register_board_info(&mc13783_spi_dev, 1);

#if defined(CONFIG_USB_ULPI)
      /* USB */
      usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
                        ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);

      imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
#endif

      /* 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,
};

MACHINE_START(MX31LITE, "LogicPD i.MX31 SOM")
      /* Maintainer: Freescale Semiconductor, Inc. */
      .boot_params    = MX3x_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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