/* * Renesas USB driver R-Car Gen. 2 initialization and power control * * Copyright (C) 2014 Ulrich Hecht * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ #include <linux/gpio.h> #include <linux/of_gpio.h> #include <linux/phy/phy.h> #include <linux/usb/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; } if (IS_ENABLED(CONFIG_USB_PHY)) { struct usb_phy *usb_phy = usb_get_phy_dev(&pdev->dev, 0); if (IS_ERR(usb_phy)) return PTR_ERR(usb_phy); priv->usb_phy = usb_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(priv->phy); priv->phy = NULL; } if (priv->usb_phy) { usb_put_phy(priv->usb_phy); priv->usb_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; } } if (priv->usb_phy) { if (enable) { retval = usb_phy_init(priv->usb_phy); if (!retval) retval = usb_phy_set_suspend(priv->usb_phy, 0); } else { usb_phy_set_suspend(priv->usb_phy, 1); usb_phy_shutdown(priv->usb_phy); retval = 0; } } return retval; } static int usbhs_rcar2_get_id(struct platform_device *pdev) { return USBHS_GADGET; } const struct renesas_usbhs_platform_callback usbhs_rcar2_ops = { .hardware_init = usbhs_rcar2_hardware_init, .hardware_exit = usbhs_rcar2_hardware_exit, .power_ctrl = usbhs_rcar2_power_ctrl, .get_id = usbhs_rcar2_get_id, };