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Sourcecode: linux-fsl-imx51 version File versions  Download package

usb_h2.c

/*
 * Copyright 2005-2009 Freescale Semiconductor, Inc. All Rights Reserved.
 */

/*
 * The code contained herein is licensed under the GNU General Public
 * License. You may obtain a copy of the GNU General Public License
 * Version 2 or later at the following locations:
 *
 * http://www.opensource.org/licenses/gpl-license.html
 * http://www.gnu.org/copyleft/gpl.html
 */

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/platform_device.h>
#include <linux/fsl_devices.h>
#include <linux/usb/fsl_xcvr.h>
#include <linux/regulator/consumer.h>
#include <mach/hardware.h>
#include <mach/arc_otg.h>
#include "usb.h"

static void _wake_up_enable(struct fsl_usb2_platform_data *pdata, bool enable)
{
      if (enable)
            USBCTRL |= UCTRL_H2WIE;
      else
            USBCTRL &= ~UCTRL_H2WIE;
}

static struct fsl_usb2_platform_data usbh2_config = {
      .name              = "Host 2",
      .platform_init     = fsl_usb_host_init,
      .platform_uninit   = fsl_usb_host_uninit,
      .operating_mode    = FSL_USB2_MPH_HOST,
      .phy_mode          = FSL_USB2_PHY_SERIAL,
      .power_budget      = 500,           /* via RT9702 */
      .gpio_usb_active   = gpio_usbh2_active,
      .gpio_usb_inactive = gpio_usbh2_inactive,
      .transceiver       = "serial",            /* on-chip */
      .wake_up_enable = _wake_up_enable,
};

static struct resource usbh2_resources[] = {
      [0] = {
             .start = (u32) (USB_H2REGS_BASE),
             .end   = (u32) (USB_H2REGS_BASE + 0x1ff),
             .flags = IORESOURCE_MEM,
             },
      [1] = {
             .start = MXC_INT_USB_HTG,
             .flags = IORESOURCE_IRQ,
             },
};

void usbh2_get_xcvr_power(struct device *dev)
{
      struct regulator *usbh2_regux;

      usbh2_regux = regulator_get(dev, "GPO1");
      regulator_enable(usbh2_regux);
      ((struct fsl_usb2_platform_data *)dev->platform_data)->
          xcvr_pwr->regu1 = usbh2_regux;

      usbh2_regux = regulator_get(dev, "GPO3");
      regulator_enable(usbh2_regux);
      ((struct fsl_usb2_platform_data *)dev->platform_data)->
          xcvr_pwr->regu2 = usbh2_regux;
}
EXPORT_SYMBOL(usbh2_get_xcvr_power);

void usbh2_put_xcvr_power(struct device *dev)
{
      struct regulator *usbh2_regux;

      usbh2_regux = ((struct fsl_usb2_platform_data *)dev->
                   platform_data)->xcvr_pwr->regu2;
      regulator_disable(usbh2_regux);
      regulator_put(usbh2_regux);

      usbh2_regux = ((struct fsl_usb2_platform_data *)dev->
                   platform_data)->xcvr_pwr->regu1;
      regulator_disable(usbh2_regux);
      regulator_put(usbh2_regux);
}
EXPORT_SYMBOL(usbh2_put_xcvr_power);

static int __init usbh2_init(void)
{
      pr_debug("%s: \n", __func__);

      host_pdev_register(usbh2_resources, ARRAY_SIZE(usbh2_resources),
                     &usbh2_config);
      return 0;
}
module_init(usbh2_init);

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