linux/drivers/phy/marvell/phy-armada375-usb2.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * USB cluster support for Armada 375 platform.
 *
 * Copyright (C) 2014 Marvell
 *
 * Gregory CLEMENT <[email protected]>
 *
 * Armada 375 comes with an USB2 host and device controller and an
 * USB3 controller. The USB cluster control register allows to manage
 * common features of both USB controllers.
 */

#include <dt-bindings/phy/phy.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/of_address.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>

#define USB2_PHY_CONFIG_DISABLE …

struct armada375_cluster_phy { … };

static int armada375_usb_phy_init(struct phy *phy)
{ … }

static const struct phy_ops armada375_usb_phy_ops = …;

/*
 * Only one controller can use this PHY. We shouldn't have the case
 * when two controllers want to use this PHY. But if this case occurs
 * then we provide a phy to the first one and return an error for the
 * next one. This error has also to be an error returned by
 * devm_phy_optional_get() so different from ENODEV for USB2. In the
 * USB3 case it still optional and we use ENODEV.
 */
static struct phy *armada375_usb_phy_xlate(struct device *dev,
					const struct of_phandle_args *args)
{ … }

static int armada375_usb_phy_probe(struct platform_device *pdev)
{ … }

static const struct of_device_id of_usb_cluster_table[] = …;

static struct platform_driver armada375_usb_phy_driver = …;
builtin_platform_driver(…) …;