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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Cadence USBSS DRD Header File.
- *
- * Copyright (C) 2017-2018 NXP
- * Copyright (C) 2018-2019 Cadence.
- *
- * Authors: Peter Chen <peter.chen@nxp.com>
- * Pawel Laszczak <pawell@cadence.com>
- */
- #include <linux/compiler.h>
- #include <linux/types.h>
- #include <linux/usb/otg.h>
- #include <generic-phy.h>
- #ifndef __LINUX_CDNS3_CORE_H
- #define __LINUX_CDNS3_CORE_H
- enum usb_role {
- USB_ROLE_NONE,
- USB_ROLE_HOST,
- USB_ROLE_DEVICE,
- };
- struct cdns3;
- /**
- * struct cdns3_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 cdns3_role_driver {
- int (*start)(struct cdns3 *cdns);
- void (*stop)(struct cdns3 *cdns);
- int (*suspend)(struct cdns3 *cdns, bool do_wakeup);
- int (*resume)(struct cdns3 *cdns, bool hibernated);
- const char *name;
- #define CDNS3_ROLE_STATE_INACTIVE 0
- #define CDNS3_ROLE_STATE_ACTIVE 1
- int state;
- };
- #define CDNS3_XHCI_RESOURCES_NUM 2
- /**
- * struct cdns3 - Representation of Cadence USB3 DRD controller.
- * @dev: pointer to Cadence device struct
- * @xhci_regs: pointer to base of xhci registers
- * @dev_regs: pointer to base of dev registers
- * @otg_v0_regs: pointer to base of v0 otg registers
- * @otg_v1_regs: pointer to base of v1 otg registers
- * @otg_regs: pointer to base of otg registers
- * @otg_irq: irq number for otg controller
- * @dev_irq: irq number for device controller
- * @roles: array of supported roles for this controller
- * @role: current role
- * @host_dev: the child host device pointer for cdns3 core
- * @gadget_dev: the child gadget device pointer for cdns3 core
- * @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.
- * @role_override: set 1 if role rely on SW.
- */
- struct cdns3 {
- struct udevice *dev;
- void __iomem *xhci_regs;
- struct cdns3_usb_regs __iomem *dev_regs;
- struct cdns3_otg_legacy_regs *otg_v0_regs;
- struct cdns3_otg_regs *otg_v1_regs;
- struct cdns3_otg_common_regs *otg_regs;
- #define CDNS3_CONTROLLER_V0 0
- #define CDNS3_CONTROLLER_V1 1
- u32 version;
- int otg_irq;
- int dev_irq;
- struct cdns3_role_driver *roles[USB_ROLE_DEVICE + 1];
- enum usb_role role;
- struct cdns3_device *gadget_dev;
- struct phy usb2_phy;
- struct phy usb3_phy;
- /* mutext used in workqueue*/
- struct mutex mutex;
- enum usb_dr_mode dr_mode;
- int role_override;
- };
- int cdns3_hw_role_switch(struct cdns3 *cdns);
- /**
- * cdns3_bind - generic bind function
- * @parent - pointer to parent udevice of which cdns3 USB controller
- * node is child of
- *
- * return 0 on success, negative errno otherwise
- */
- int cdns3_bind(struct udevice *dev);
- #endif /* __LINUX_CDNS3_CORE_H */
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