110 lines
2.2 KiB
C
110 lines
2.2 KiB
C
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/*
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* Renesas USB driver R-Car Gen. 2 initialization and power control
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*
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* Copyright (C) 2014 Ulrich Hecht
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/gpio.h>
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#include <linux/of_gpio.h>
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#include <linux/phy/phy.h>
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#include <linux/usb/phy.h>
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#include "common.h"
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#include "rcar2.h"
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static int usbhs_rcar2_hardware_init(struct platform_device *pdev)
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{
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struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
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if (IS_ENABLED(CONFIG_GENERIC_PHY)) {
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struct phy *phy = phy_get(&pdev->dev, "usb");
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if (IS_ERR(phy))
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return PTR_ERR(phy);
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priv->phy = phy;
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return 0;
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}
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if (IS_ENABLED(CONFIG_USB_PHY)) {
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struct usb_phy *usb_phy = usb_get_phy_dev(&pdev->dev, 0);
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if (IS_ERR(usb_phy))
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return PTR_ERR(usb_phy);
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priv->usb_phy = usb_phy;
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return 0;
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}
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return -ENXIO;
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}
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static int usbhs_rcar2_hardware_exit(struct platform_device *pdev)
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{
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struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
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if (priv->phy) {
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phy_put(priv->phy);
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priv->phy = NULL;
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}
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if (priv->usb_phy) {
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usb_put_phy(priv->usb_phy);
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priv->usb_phy = NULL;
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}
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return 0;
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}
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static int usbhs_rcar2_power_ctrl(struct platform_device *pdev,
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void __iomem *base, int enable)
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{
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struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
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int retval = -ENODEV;
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if (priv->phy) {
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if (enable) {
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retval = phy_init(priv->phy);
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if (!retval)
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retval = phy_power_on(priv->phy);
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} else {
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phy_power_off(priv->phy);
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phy_exit(priv->phy);
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retval = 0;
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}
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}
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if (priv->usb_phy) {
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if (enable) {
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retval = usb_phy_init(priv->usb_phy);
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if (!retval)
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retval = usb_phy_set_suspend(priv->usb_phy, 0);
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} else {
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usb_phy_set_suspend(priv->usb_phy, 1);
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usb_phy_shutdown(priv->usb_phy);
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retval = 0;
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}
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}
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return retval;
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}
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static int usbhs_rcar2_get_id(struct platform_device *pdev)
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{
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return USBHS_GADGET;
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}
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const struct renesas_usbhs_platform_callback usbhs_rcar2_ops = {
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.hardware_init = usbhs_rcar2_hardware_init,
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.hardware_exit = usbhs_rcar2_hardware_exit,
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.power_ctrl = usbhs_rcar2_power_ctrl,
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.get_id = usbhs_rcar2_get_id,
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};
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