linux/drivers/usb/cdns3/core.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Cadence USBSS and USBSSP DRD Header File.
 *
 * Copyright (C) 2017-2018 NXP
 * Copyright (C) 2018-2019 Cadence.
 *
 * Authors: Peter Chen <[email protected]>
 *          Pawel Laszczak <[email protected]>
 */
#ifndef __LINUX_CDNS3_CORE_H
#define __LINUX_CDNS3_CORE_H

#include <linux/usb/otg.h>
#include <linux/usb/role.h>

struct cdns;

/**
 * struct cdns_role_driver - host/gadget role driver
 * @start: start this role
 * @stop: stop this role
 * @suspend: suspend callback for this role
 * @resume: resume callback for this role
 * @irq: irq handler for this role
 * @name: role name string (host/gadget)
 * @state: current state
 */
struct cdns_role_driver { … };

#define CDNS_XHCI_RESOURCES_NUM …

struct cdns3_platform_data { … };

/**
 * struct cdns - Representation of Cadence USB3 DRD controller.
 * @dev: pointer to Cadence device struct
 * @xhci_regs: pointer to base of xhci registers
 * @xhci_res: the resource for xhci
 * @dev_regs: pointer to base of dev registers
 * @otg_res: the resource for otg
 * @otg_v0_regs: pointer to base of v0 otg registers
 * @otg_v1_regs: pointer to base of v1 otg registers
 * @otg_cdnsp_regs: pointer to base of CDNSP otg registers
 * @otg_regs: pointer to base of otg registers
 * @otg_irq_regs: pointer to interrupt registers
 * @otg_irq: irq number for otg controller
 * @dev_irq: irq number for device controller
 * @wakeup_irq: irq number for wakeup event, it is optional
 * @roles: array of supported roles for this controller
 * @role: current role
 * @host_dev: the child host device pointer for cdns core
 * @gadget_dev: the child gadget device pointer
 * @usb2_phy: pointer to USB2 PHY
 * @usb3_phy: pointer to USB3 PHY
 * @mutex: the mutex for concurrent code at driver
 * @dr_mode: supported mode of operation it can be only Host, only Device
 *           or OTG mode that allow to switch between Device and Host mode.
 *           This field based on firmware setting, kernel configuration
 *           and hardware configuration.
 * @role_sw: pointer to role switch object.
 * @in_lpm: indicate the controller is in low power mode
 * @wakeup_pending: wakeup interrupt pending
 * @pdata: platform data from glue layer
 * @lock: spinlock structure
 * @xhci_plat_data: xhci private data structure pointer
 * @gadget_init: pointer to gadget initialization function
 */
struct cdns { … };

int cdns_hw_role_switch(struct cdns *cdns);
int cdns_init(struct cdns *cdns);
int cdns_remove(struct cdns *cdns);

#ifdef CONFIG_PM_SLEEP
int cdns_resume(struct cdns *cdns);
int cdns_suspend(struct cdns *cdns);
void cdns_set_active(struct cdns *cdns, u8 set_active);
#else /* CONFIG_PM_SLEEP */
static inline int cdns_resume(struct cdns *cdns)
{ return 0; }
static inline void cdns_set_active(struct cdns *cdns, u8 set_active) { }
static inline int cdns_suspend(struct cdns *cdns)
{ return 0; }
#endif /* CONFIG_PM_SLEEP */
#endif /* __LINUX_CDNS3_CORE_H */