linux-imx

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

/*

 * Copyright (C) 2011 Marvell International Ltd. All rights reserved.

 * Author: Chao Xie <chao.xie@marvell.com>

 *        Neil Zhang <zhangwm@marvell.com>

 */

​

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/clk.h>

#include <linux/err.h>

#include <linux/usb/otg.h>

#include <linux/platform_data/mv_usb.h>

#include <linux/io.h>

​

#include <linux/usb/hcd.h>

​

#include "ehci.h"

​

/* registers */

#define U2x_CAPREGS_OFFSET       0x100

​

#define CAPLENGTH_MASK         (0xff)

​

#define hcd_to_ehci_hcd_mv(h) ((struct ehci_hcd_mv *)hcd_to_ehci(h)->priv)

​

struct ehci_hcd_mv {

    /* Which mode does this ehci running OTG/Host ? */

    int mode;

​

    void __iomem *base;

    void __iomem *cap_regs;

    void __iomem *op_regs;

​

    struct usb_phy *otg;

    struct clk *clk;

​

    struct phy *phy;

​

    int (*set_vbus)(unsigned int vbus);

};

​

static void ehci_clock_enable(struct ehci_hcd_mv *ehci_mv)

{

    clk_prepare_enable(ehci_mv->clk);

}

​

static void ehci_clock_disable(struct ehci_hcd_mv *ehci_mv)

{

    clk_disable_unprepare(ehci_mv->clk);

}

​

static int mv_ehci_enable(struct ehci_hcd_mv *ehci_mv)

{

    ehci_clock_enable(ehci_mv);

    return phy_init(ehci_mv->phy);

}

​

static void mv_ehci_disable(struct ehci_hcd_mv *ehci_mv)

{

    phy_exit(ehci_mv->phy);

    ehci_clock_disable(ehci_mv);