/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Cadence USBSS DRD Header File.
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*
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* Copyright (C) 2017-2018 NXP
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* Copyright (C) 2018-2019 Cadence.
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*
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* Authors: Peter Chen <peter.chen@nxp.com>
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* Pawel Laszczak <pawell@cadence.com>
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*/
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include <linux/usb/otg.h>
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#include <generic-phy.h>
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#ifndef __LINUX_CDNS3_CORE_H
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#define __LINUX_CDNS3_CORE_H
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enum usb_role {
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USB_ROLE_NONE,
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USB_ROLE_HOST,
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USB_ROLE_DEVICE,
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};
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struct cdns3;
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/**
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* struct cdns3_role_driver - host/gadget role driver
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* @start: start this role
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* @stop: stop this role
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* @suspend: suspend callback for this role
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* @resume: resume callback for this role
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* @irq: irq handler for this role
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* @name: role name string (host/gadget)
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* @state: current state
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*/
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struct cdns3_role_driver {
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int (*start)(struct cdns3 *cdns);
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void (*stop)(struct cdns3 *cdns);
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int (*suspend)(struct cdns3 *cdns, bool do_wakeup);
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int (*resume)(struct cdns3 *cdns, bool hibernated);
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const char *name;
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#define CDNS3_ROLE_STATE_INACTIVE 0
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#define CDNS3_ROLE_STATE_ACTIVE 1
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int state;
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};
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#define CDNS3_XHCI_RESOURCES_NUM 2
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/**
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* struct cdns3 - Representation of Cadence USB3 DRD controller.
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* @dev: pointer to Cadence device struct
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* @xhci_regs: pointer to base of xhci registers
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* @dev_regs: pointer to base of dev registers
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* @otg_v0_regs: pointer to base of v0 otg registers
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* @otg_v1_regs: pointer to base of v1 otg registers
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* @otg_regs: pointer to base of otg registers
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* @otg_irq: irq number for otg controller
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* @dev_irq: irq number for device controller
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* @roles: array of supported roles for this controller
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* @role: current role
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* @host_dev: the child host device pointer for cdns3 core
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* @gadget_dev: the child gadget device pointer for cdns3 core
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* @usb2_phy: pointer to USB2 PHY
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* @usb3_phy: pointer to USB3 PHY
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* @mutex: the mutex for concurrent code at driver
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* @dr_mode: supported mode of operation it can be only Host, only Device
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* or OTG mode that allow to switch between Device and Host mode.
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* This field based on firmware setting, kernel configuration
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* and hardware configuration.
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* @role_sw: pointer to role switch object.
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* @role_override: set 1 if role rely on SW.
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*/
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struct cdns3 {
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struct udevice *dev;
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void __iomem *xhci_regs;
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struct cdns3_usb_regs __iomem *dev_regs;
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struct cdns3_otg_legacy_regs *otg_v0_regs;
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struct cdns3_otg_regs *otg_v1_regs;
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struct cdns3_otg_common_regs *otg_regs;
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#define CDNS3_CONTROLLER_V0 0
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#define CDNS3_CONTROLLER_V1 1
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u32 version;
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int otg_irq;
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int dev_irq;
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struct cdns3_role_driver *roles[USB_ROLE_DEVICE + 1];
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enum usb_role role;
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struct cdns3_device *gadget_dev;
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struct phy usb2_phy;
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struct phy usb3_phy;
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/* mutext used in workqueue*/
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struct mutex mutex;
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enum usb_dr_mode dr_mode;
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int role_override;
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};
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int cdns3_hw_role_switch(struct cdns3 *cdns);
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/**
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* cdns3_bind - generic bind function
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* @parent - pointer to parent udevice of which cdns3 USB controller
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* node is child of
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*
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* return 0 on success, negative errno otherwise
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*/
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int cdns3_bind(struct udevice *dev);
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#endif /* __LINUX_CDNS3_CORE_H */
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