| Vignesh Raghavendra | b1a4928 | 2019-10-01 17:26:33 +0530 | [diff] [blame] | 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/compiler.h> |
| 12 | #include <linux/types.h> |
| 13 | #include <linux/usb/otg.h> |
| 14 | #include <generic-phy.h> |
| 15 | |
| 16 | #ifndef __LINUX_CDNS3_CORE_H |
| 17 | #define __LINUX_CDNS3_CORE_H |
| 18 | |
| 19 | enum usb_role { |
| 20 | USB_ROLE_NONE, |
| 21 | USB_ROLE_HOST, |
| 22 | USB_ROLE_DEVICE, |
| 23 | }; |
| 24 | |
| 25 | struct cdns3; |
| 26 | |
| 27 | /** |
| 28 | * struct cdns3_role_driver - host/gadget role driver |
| 29 | * @start: start this role |
| 30 | * @stop: stop this role |
| 31 | * @suspend: suspend callback for this role |
| 32 | * @resume: resume callback for this role |
| 33 | * @irq: irq handler for this role |
| 34 | * @name: role name string (host/gadget) |
| 35 | * @state: current state |
| 36 | */ |
| 37 | struct cdns3_role_driver { |
| 38 | int (*start)(struct cdns3 *cdns); |
| 39 | void (*stop)(struct cdns3 *cdns); |
| 40 | int (*suspend)(struct cdns3 *cdns, bool do_wakeup); |
| 41 | int (*resume)(struct cdns3 *cdns, bool hibernated); |
| 42 | const char *name; |
| 43 | #define CDNS3_ROLE_STATE_INACTIVE 0 |
| 44 | #define CDNS3_ROLE_STATE_ACTIVE 1 |
| 45 | int state; |
| 46 | }; |
| 47 | |
| 48 | #define CDNS3_XHCI_RESOURCES_NUM 2 |
| 49 | /** |
| 50 | * struct cdns3 - Representation of Cadence USB3 DRD controller. |
| 51 | * @dev: pointer to Cadence device struct |
| 52 | * @xhci_regs: pointer to base of xhci registers |
| 53 | * @dev_regs: pointer to base of dev registers |
| 54 | * @otg_v0_regs: pointer to base of v0 otg registers |
| 55 | * @otg_v1_regs: pointer to base of v1 otg registers |
| 56 | * @otg_regs: pointer to base of otg registers |
| 57 | * @otg_irq: irq number for otg controller |
| 58 | * @dev_irq: irq number for device controller |
| 59 | * @roles: array of supported roles for this controller |
| 60 | * @role: current role |
| 61 | * @host_dev: the child host device pointer for cdns3 core |
| 62 | * @gadget_dev: the child gadget device pointer for cdns3 core |
| 63 | * @usb2_phy: pointer to USB2 PHY |
| 64 | * @usb3_phy: pointer to USB3 PHY |
| 65 | * @mutex: the mutex for concurrent code at driver |
| 66 | * @dr_mode: supported mode of operation it can be only Host, only Device |
| 67 | * or OTG mode that allow to switch between Device and Host mode. |
| 68 | * This field based on firmware setting, kernel configuration |
| 69 | * and hardware configuration. |
| 70 | * @role_sw: pointer to role switch object. |
| 71 | * @role_override: set 1 if role rely on SW. |
| 72 | */ |
| 73 | struct cdns3 { |
| 74 | struct udevice *dev; |
| 75 | void __iomem *xhci_regs; |
| 76 | struct cdns3_usb_regs __iomem *dev_regs; |
| 77 | |
| 78 | struct cdns3_otg_legacy_regs *otg_v0_regs; |
| 79 | struct cdns3_otg_regs *otg_v1_regs; |
| 80 | struct cdns3_otg_common_regs *otg_regs; |
| 81 | #define CDNS3_CONTROLLER_V0 0 |
| 82 | #define CDNS3_CONTROLLER_V1 1 |
| 83 | u32 version; |
| 84 | |
| 85 | int otg_irq; |
| 86 | int dev_irq; |
| 87 | struct cdns3_role_driver *roles[USB_ROLE_DEVICE + 1]; |
| 88 | enum usb_role role; |
| 89 | struct cdns3_device *gadget_dev; |
| 90 | struct phy usb2_phy; |
| 91 | struct phy usb3_phy; |
| 92 | /* mutext used in workqueue*/ |
| 93 | struct mutex mutex; |
| 94 | enum usb_dr_mode dr_mode; |
| 95 | int role_override; |
| 96 | }; |
| 97 | |
| 98 | int cdns3_hw_role_switch(struct cdns3 *cdns); |
| 99 | |
| 100 | /** |
| 101 | * cdns3_bind - generic bind function |
| 102 | * @parent - pointer to parent udevice of which cdns3 USB controller |
| 103 | * node is child of |
| 104 | * |
| 105 | * return 0 on success, negative errno otherwise |
| 106 | */ |
| 107 | int cdns3_bind(struct udevice *dev); |
| 108 | #endif /* __LINUX_CDNS3_CORE_H */ |