// SPDX-License-Identifier: GPL-1.0+
/*
 * Renesas USB driver R-Car Gen. 2 initialization and power control
 *
 * Copyright (C) 2014 Ulrich Hecht
 * Copyright (C) 2019 Renesas Electronics Corporation
 */

#include <linux/phy/phy.h>
#include "common.h"
#include "rcar2.h"

static int usbhs_rcar2_hardware_init(struct platform_device *pdev)
{
        struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);

        if (IS_ENABLED(CONFIG_GENERIC_PHY)) {
                struct phy *phy = phy_get(&pdev->dev, "usb");

                if (IS_ERR(phy))
                        return PTR_ERR(phy);

                priv->phy = phy;
                return 0;
        }

        return -ENXIO;
}

static int usbhs_rcar2_hardware_exit(struct platform_device *pdev)
{
        struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);

        if (priv->phy) {
                phy_put(&pdev->dev, priv->phy);
                priv->phy = NULL;
        }

        return 0;
}

static int usbhs_rcar2_power_ctrl(struct platform_device *pdev,
                                void __iomem *base, int enable)
{
        struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
        int retval = -ENODEV;

        if (priv->phy) {
                if (enable) {
                        retval = phy_init(priv->phy);

                        if (!retval)
                                retval = phy_power_on(priv->phy);
                } else {
                        phy_power_off(priv->phy);
                        phy_exit(priv->phy);
                        retval = 0;
                }
        }

        return retval;
}

const struct renesas_usbhs_platform_info usbhs_rcar_gen2_plat_info = {
        .platform_callback = {
                .hardware_init = usbhs_rcar2_hardware_init,
                .hardware_exit = usbhs_rcar2_hardware_exit,
                .power_ctrl = usbhs_rcar2_power_ctrl,
                .get_id = usbhs_get_id_as_gadget,
        },
        .driver_param = {
                .has_usb_dmac = 1,
                .has_new_pipe_configs = 1,
        },
};