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/*
* 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,
};
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