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mach-mx31lilly.c

/*
 *  LILLY-1131 module support
 *
 *    Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
 *
 *  based on code for other MX31 boards,
 *
 *    Copyright 2005-2007 Freescale Semiconductor
 *    Copyright (c) 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
 *    Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
 *
 * 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/clk.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/smsc911x.h>
#include <linux/mtd/physmap.h>
#include <linux/spi/spi.h>
#include <linux/mfd/mc13783.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>

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

#include <mach/hardware.h>
#include <mach/common.h>
#include <mach/iomux-mx3.h>
#include <mach/board-mx31lilly.h>
#include <mach/ulpi.h>

#include "devices-imx31.h"
#include "devices.h"

/*
 * This file contains module-specific initialization routines for LILLY-1131.
 * Initialization of peripherals found on the baseboard is implemented in the
 * appropriate baseboard support code.
 */

/* SMSC ethernet support */

static struct resource smsc91x_resources[] = {
      {
            .start      = MX31_CS4_BASE_ADDR,
            .end  = MX31_CS4_BASE_ADDR + 0xffff,
            .flags      = IORESOURCE_MEM,
      },
      {
            .start      = IOMUX_TO_IRQ(MX31_PIN_GPIO1_0),
            .end  = IOMUX_TO_IRQ(MX31_PIN_GPIO1_0),
            .flags      = IORESOURCE_IRQ | IRQF_TRIGGER_FALLING,
      }
};

static struct smsc911x_platform_config smsc911x_config = {
      .phy_interface    = PHY_INTERFACE_MODE_MII,
      .irq_polarity     = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
      .irq_type   = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
      .flags            = SMSC911X_USE_32BIT |
                    SMSC911X_SAVE_MAC_ADDRESS |
                    SMSC911X_FORCE_INTERNAL_PHY,
};

static struct platform_device smsc91x_device = {
      .name       = "smsc911x",
      .id         = -1,
      .num_resources    = ARRAY_SIZE(smsc91x_resources),
      .resource   = smsc91x_resources,
      .dev        = {
            .platform_data = &smsc911x_config,
      }
};

/* 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,
};

/* 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 usbotg_init(struct platform_device *pdev)
{
      unsigned int pins[] = {
            MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
            MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
            MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
            MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
            MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
            MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
            MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
            MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
            MX31_PIN_USBOTG_CLK__USBOTG_CLK,
            MX31_PIN_USBOTG_DIR__USBOTG_DIR,
            MX31_PIN_USBOTG_NXT__USBOTG_NXT,
            MX31_PIN_USBOTG_STP__USBOTG_STP,
      };

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

      mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);

      mxc_iomux_set_gpr(MUX_PGP_USB_4WIRE, true);
      mxc_iomux_set_gpr(MUX_PGP_USB_COMMON, true);

      /* chip select */
      mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_DTR_DCE2, IOMUX_CONFIG_GPIO),
                        "USBOTG_CS");
      gpio_request(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE2), "USBH1 CS");
      gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE2), 0);

      return 0;
}

static int usbh1_init(struct platform_device *pdev)
{
      int pins[] = {
            MX31_PIN_CSPI1_MOSI__USBH1_RXDM,
            MX31_PIN_CSPI1_MISO__USBH1_RXDP,
            MX31_PIN_CSPI1_SS0__USBH1_TXDM,
            MX31_PIN_CSPI1_SS1__USBH1_TXDP,
            MX31_PIN_CSPI1_SS2__USBH1_RCV,
            MX31_PIN_CSPI1_SCLK__USBH1_OEB,
            MX31_PIN_CSPI1_SPI_RDY__USBH1_FS,
      };

      mxc_iomux_setup_multiple_pins(pins, ARRAY_SIZE(pins), "USB H1");

      mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG);
      mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG);

      mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true);

      return 0;
}

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 usbotg_pdata = {
      .init = usbotg_init,
      .portsc     = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
      .flags      = MXC_EHCI_POWER_PINS_ENABLED,
};

static const struct mxc_usbh_platform_data usbh1_pdata __initconst = {
      .init = usbh1_init,
      .portsc     = MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL,
      .flags      = MXC_EHCI_POWER_PINS_ENABLED | MXC_EHCI_INTERFACE_SINGLE_UNI,
};

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,
};

static void lilly1131_usb_init(void)
{
      usbotg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
                        ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
      usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
                        ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);

      imx31_add_mxc_ehci_hs(1, &usbh1_pdata);
      imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
}

#else
static inline void lilly1131_usb_init(void) {}
#endif /* CONFIG_USB_ULPI */

/* SPI */

static int spi_internal_chipselect[] = {
      MXC_SPI_CS(0),
      MXC_SPI_CS(1),
      MXC_SPI_CS(2),
};

static const struct spi_imx_master spi0_pdata __initconst = {
      .chipselect = spi_internal_chipselect,
      .num_chipselect = ARRAY_SIZE(spi_internal_chipselect),
};

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_TOUCHSCREEN,
};

static struct spi_board_info mc13783_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),
};

static struct platform_device *devices[] __initdata = {
      &smsc91x_device,
      &physmap_flash_device,
};

static int mx31lilly_baseboard;
core_param(mx31lilly_baseboard, mx31lilly_baseboard, int, 0444);

static void __init mx31lilly_board_init(void)
{
      switch (mx31lilly_baseboard) {
      case MX31LILLY_NOBOARD:
            break;
      case MX31LILLY_DB:
            mx31lilly_db_init();
            break;
      default:
            printk(KERN_ERR "Illegal mx31lilly_baseboard type %d\n",
                  mx31lilly_baseboard);
      }

      mxc_iomux_alloc_pin(MX31_PIN_CS4__CS4, "Ethernet CS");

      /* SPI */
      mxc_iomux_alloc_pin(MX31_PIN_CSPI1_SCLK__SCLK, "SPI1_CLK");
      mxc_iomux_alloc_pin(MX31_PIN_CSPI1_MOSI__MOSI, "SPI1_TX");
      mxc_iomux_alloc_pin(MX31_PIN_CSPI1_MISO__MISO, "SPI1_RX");
      mxc_iomux_alloc_pin(MX31_PIN_CSPI1_SPI_RDY__SPI_RDY, "SPI1_RDY");
      mxc_iomux_alloc_pin(MX31_PIN_CSPI1_SS0__SS0, "SPI1_SS0");
      mxc_iomux_alloc_pin(MX31_PIN_CSPI1_SS1__SS1, "SPI1_SS1");
      mxc_iomux_alloc_pin(MX31_PIN_CSPI1_SS2__SS2, "SPI1_SS2");

      mxc_iomux_alloc_pin(MX31_PIN_CSPI2_SCLK__SCLK, "SPI2_CLK");
      mxc_iomux_alloc_pin(MX31_PIN_CSPI2_MOSI__MOSI, "SPI2_TX");
      mxc_iomux_alloc_pin(MX31_PIN_CSPI2_MISO__MISO, "SPI2_RX");
      mxc_iomux_alloc_pin(MX31_PIN_CSPI2_SPI_RDY__SPI_RDY, "SPI2_RDY");
      mxc_iomux_alloc_pin(MX31_PIN_CSPI2_SS0__SS0, "SPI2_SS0");
      mxc_iomux_alloc_pin(MX31_PIN_CSPI2_SS1__SS1, "SPI2_SS1");
      mxc_iomux_alloc_pin(MX31_PIN_CSPI2_SS2__SS2, "SPI2_SS2");

      imx31_add_spi_imx0(&spi0_pdata);
      imx31_add_spi_imx1(&spi1_pdata);
      spi_register_board_info(&mc13783_dev, 1);

      platform_add_devices(devices, ARRAY_SIZE(devices));

      /* USB */
      lilly1131_usb_init();
}

static void __init mx31lilly_timer_init(void)
{
      mx31_clocks_init(26000000);
}

static struct sys_timer mx31lilly_timer = {
      .init = mx31lilly_timer_init,
};

MACHINE_START(LILLY1131, "INCO startec LILLY-1131")
      .boot_params      = MX3x_PHYS_OFFSET + 0x100,
      .map_io           = mx31_map_io,
      .init_irq   = mx31_init_irq,
      .init_machine     = mx31lilly_board_init,
      .timer            = &mx31lilly_timer,
MACHINE_END


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