// 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,
  	},

  };