linux-imx

// SPDX-License-Identifier: GPL-2.0+

/*

 * Copyright (c) 2008 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix

 * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>

 */

​

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/io.h>

#include <linux/platform_device.h>

#include <linux/clk.h>

#include <linux/delay.h>

#include <linux/usb/otg.h>

#include <linux/usb/ulpi.h>

#include <linux/slab.h>

#include <linux/usb.h>

#include <linux/usb/hcd.h>

#include <linux/platform_data/usb-ehci-mxc.h>

#include "ehci.h"

​

#define DRIVER_DESC "Freescale On-Chip EHCI Host driver"

​

static const char hcd_name[] = "ehci-mxc";

​

#define ULPI_VIEWPORT_OFFSET    0x170

​

struct ehci_mxc_priv {

    struct clk *usbclk, *ahbclk, *phyclk;

};

​

static struct hc_driver __read_mostly ehci_mxc_hc_driver;

​

static const struct ehci_driver_overrides ehci_mxc_overrides __initconst = {

    .extra_priv_size =  sizeof(struct ehci_mxc_priv),

};

​

static int ehci_mxc_drv_probe(struct platform_device *pdev)

{

    struct mxc_usbh_platform_data *pdata = dev_get_platdata(&pdev->dev);

    struct usb_hcd *hcd;

    struct resource *res;

    int irq, ret;

    struct ehci_mxc_priv *priv;

    struct device *dev = &pdev->dev;

    struct ehci_hcd *ehci;

​

    if (!pdata) {

        dev_err(dev, "No platform data given, bailing out.\n");

        return -EINVAL;

    }

​

    irq = platform_get_irq(pdev, 0);

​

    hcd = usb_create_hcd(&ehci_mxc_hc_driver, dev, dev_name(dev));

    if (!hcd)

        return -ENOMEM;

​

    res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

    hcd->regs = devm_ioremap_resource(&pdev->dev, res);

    if (IS_ERR(hcd->regs)) {

        ret = PTR_ERR(hcd->regs);

        goto err_alloc;

    }