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linux-next/drivers/usb/renesas_usbhs/rcar2.c
Johan Hovold d8351953fb USB: renesas_usbhs: drop unused legacy-phy support
Drop support for legacy phys for rcar2 which hasn't been used with a
mainline kernel since commit 9080b8dc76 ("ARM: OMAP2+: Remove legacy
usb-host.c platform init code"). Specifically, since that commit
usb_get_phy_dev() have always returned -ENODEV and consequently this
code has not been used.

Note that the legacy-phy API is still being used in gadget mode to bind
the peripheral controller.

Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-04-22 15:58:24 +02:00

76 lines
1.5 KiB
C

// SPDX-License-Identifier: GPL-1.0+
/*
* Renesas USB driver R-Car Gen. 2 initialization and power control
*
* Copyright (C) 2014 Ulrich Hecht
*/
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#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(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;
}
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,
};