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board-am3517crane.c

/*
 * Support for AM3517/05 Craneboard
 * http://www.mistralsolutions.com/products/craneboard.php
 *
 * Copyright (C) 2010 Mistral Solutions Pvt Ltd. <www.mistralsolutions.com>
 * Author: R.Srinath <srinath@mistralsolutions.com>
 *
 * Based on mach-omap2/board-am3517evm.c
 *
 * 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 version 2.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
 * whether express or implied; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/gpio.h>

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

#include <plat/board.h>
#include <plat/common.h>
#include <plat/usb.h>

#include "mux.h"
#include "control.h"

#define GPIO_USB_POWER        35
#define GPIO_USB_NRESET       38


/* Board initialization */
static struct omap_board_config_kernel am3517_crane_config[] __initdata = {
};

#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
      { .reg_offset = OMAP_MUX_TERMINATOR },
};
#else
#define board_mux NULL
#endif

static void __init am3517_crane_init_irq(void)
{
      omap_board_config = am3517_crane_config;
      omap_board_config_size = ARRAY_SIZE(am3517_crane_config);

      omap2_init_common_infrastructure();
      omap2_init_common_devices(NULL, NULL);
      omap_init_irq();
}

static struct ehci_hcd_omap_platform_data ehci_pdata __initdata = {
      .port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
      .port_mode[1] = EHCI_HCD_OMAP_MODE_UNKNOWN,
      .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,

      .phy_reset  = true,
      .reset_gpio_port[0]  = GPIO_USB_NRESET,
      .reset_gpio_port[1]  = -EINVAL,
      .reset_gpio_port[2]  = -EINVAL
};

static void __init am3517_crane_init(void)
{
      int ret;

      omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
      omap_serial_init();

      /* Configure GPIO for EHCI port */
      if (omap_mux_init_gpio(GPIO_USB_NRESET, OMAP_PIN_OUTPUT)) {
            pr_err("Can not configure mux for GPIO_USB_NRESET %d\n",
                  GPIO_USB_NRESET);
            return;
      }

      if (omap_mux_init_gpio(GPIO_USB_POWER, OMAP_PIN_OUTPUT)) {
            pr_err("Can not configure mux for GPIO_USB_POWER %d\n",
                  GPIO_USB_POWER);
            return;
      }

      ret = gpio_request(GPIO_USB_POWER, "usb_ehci_enable");
      if (ret < 0) {
            pr_err("Can not request GPIO %d\n", GPIO_USB_POWER);
            return;
      }

      ret = gpio_direction_output(GPIO_USB_POWER, 1);
      if (ret < 0) {
            gpio_free(GPIO_USB_POWER);
            pr_err("Unable to initialize EHCI power\n");
            return;
      }

      usb_ehci_init(&ehci_pdata);
}

MACHINE_START(CRANEBOARD, "AM3517/05 CRANEBOARD")
      .boot_params      = 0x80000100,
      .map_io           = omap3_map_io,
      .reserve    = omap_reserve,
      .init_irq   = am3517_crane_init_irq,
      .init_machine     = am3517_crane_init,
      .timer            = &omap_timer,
MACHINE_END

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