1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Cadence USBSS DRD Header File. 4 * 5 * Copyright (C) 2017-2018 NXP 6 * Copyright (C) 2018-2019 Cadence. 7 * 8 * Authors: Peter Chen <peter.chen@nxp.com> 9 * Pawel Laszczak <pawell@cadence.com> 10 */ 11 #include <linux/usb/otg.h> 12 #include <linux/usb/role.h> 13 14 #ifndef __LINUX_CDNS3_CORE_H 15 #define __LINUX_CDNS3_CORE_H 16 17 struct cdns3; 18 19 /** 20 * struct cdns3_role_driver - host/gadget role driver 21 * @start: start this role 22 * @stop: stop this role 23 * @suspend: suspend callback for this role 24 * @resume: resume callback for this role 25 * @irq: irq handler for this role 26 * @name: role name string (host/gadget) 27 * @state: current state 28 */ 29 struct cdns3_role_driver { 30 int (*start)(struct cdns3 *cdns); 31 void (*stop)(struct cdns3 *cdns); 32 int (*suspend)(struct cdns3 *cdns, bool do_wakeup); 33 int (*resume)(struct cdns3 *cdns, bool hibernated); 34 const char *name; 35 #define CDNS3_ROLE_STATE_INACTIVE 0 36 #define CDNS3_ROLE_STATE_ACTIVE 1 37 int state; 38 }; 39 40 #define CDNS3_XHCI_RESOURCES_NUM 2 41 /** 42 * struct cdns3 - Representation of Cadence USB3 DRD controller. 43 * @dev: pointer to Cadence device struct 44 * @xhci_regs: pointer to base of xhci registers 45 * @xhci_res: the resource for xhci 46 * @dev_regs: pointer to base of dev registers 47 * @otg_res: the resource for otg 48 * @otg_v0_regs: pointer to base of v0 otg registers 49 * @otg_v1_regs: pointer to base of v1 otg registers 50 * @otg_regs: pointer to base of otg registers 51 * @otg_irq: irq number for otg controller 52 * @dev_irq: irq number for device controller 53 * @roles: array of supported roles for this controller 54 * @role: current role 55 * @host_dev: the child host device pointer for cdns3 core 56 * @gadget_dev: the child gadget device pointer for cdns3 core 57 * @usb2_phy: pointer to USB2 PHY 58 * @usb3_phy: pointer to USB3 PHY 59 * @mutex: the mutex for concurrent code at driver 60 * @dr_mode: supported mode of operation it can be only Host, only Device 61 * or OTG mode that allow to switch between Device and Host mode. 62 * This field based on firmware setting, kernel configuration 63 * and hardware configuration. 64 * @role_sw: pointer to role switch object. 65 * @role_override: set 1 if role rely on SW. 66 */ 67 struct cdns3 { 68 struct device *dev; 69 void __iomem *xhci_regs; 70 struct resource xhci_res[CDNS3_XHCI_RESOURCES_NUM]; 71 struct cdns3_usb_regs __iomem *dev_regs; 72 73 struct resource otg_res; 74 struct cdns3_otg_legacy_regs *otg_v0_regs; 75 struct cdns3_otg_regs *otg_v1_regs; 76 struct cdns3_otg_common_regs *otg_regs; 77 #define CDNS3_CONTROLLER_V0 0 78 #define CDNS3_CONTROLLER_V1 1 79 u32 version; 80 81 int otg_irq; 82 int dev_irq; 83 struct cdns3_role_driver *roles[USB_ROLE_DEVICE + 1]; 84 enum usb_role role; 85 struct platform_device *host_dev; 86 struct cdns3_device *gadget_dev; 87 struct phy *usb2_phy; 88 struct phy *usb3_phy; 89 /* mutext used in workqueue*/ 90 struct mutex mutex; 91 enum usb_dr_mode dr_mode; 92 struct usb_role_switch *role_sw; 93 int role_override; 94 }; 95 96 int cdns3_hw_role_switch(struct cdns3 *cdns); 97 98 #endif /* __LINUX_CDNS3_CORE_H */ 99