| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * gadget.h - DesignWare USB3 DRD Gadget Header |
| * |
| * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com |
| * |
| * Authors: Felipe Balbi <balbi@ti.com>, |
| * Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| */ |
| |
| #ifndef __DRIVERS_USB_DWC3_GADGET_H |
| #define __DRIVERS_USB_DWC3_GADGET_H |
| |
| #include <linux/list.h> |
| #include <linux/usb/gadget.h> |
| #include "io.h" |
| |
| struct dwc3; |
| #define to_dwc3_ep(ep) (container_of(ep, struct dwc3_ep, endpoint)) |
| #define gadget_to_dwc(g) (container_of(g, struct dwc3, gadget)) |
| |
| /* DEPCFG parameter 1 */ |
| #define DWC3_DEPCFG_INT_NUM(n) (((n) & 0x1f) << 0) |
| #define DWC3_DEPCFG_XFER_COMPLETE_EN BIT(8) |
| #define DWC3_DEPCFG_XFER_IN_PROGRESS_EN BIT(9) |
| #define DWC3_DEPCFG_XFER_NOT_READY_EN BIT(10) |
| #define DWC3_DEPCFG_FIFO_ERROR_EN BIT(11) |
| #define DWC3_DEPCFG_STREAM_EVENT_EN BIT(13) |
| #define DWC3_DEPCFG_BINTERVAL_M1(n) (((n) & 0xff) << 16) |
| #define DWC3_DEPCFG_STREAM_CAPABLE BIT(24) |
| #define DWC3_DEPCFG_EP_NUMBER(n) (((n) & 0x1f) << 25) |
| #define DWC3_DEPCFG_BULK_BASED BIT(30) |
| #define DWC3_DEPCFG_FIFO_BASED BIT(31) |
| |
| /* DEPCFG parameter 0 */ |
| #define DWC3_DEPCFG_EP_TYPE(n) (((n) & 0x3) << 1) |
| #define DWC3_DEPCFG_MAX_PACKET_SIZE(n) (((n) & 0x7ff) << 3) |
| #define DWC3_DEPCFG_FIFO_NUMBER(n) (((n) & 0x1f) << 17) |
| #define DWC3_DEPCFG_BURST_SIZE(n) (((n) & 0xf) << 22) |
| #define DWC3_DEPCFG_DATA_SEQ_NUM(n) ((n) << 26) |
| /* This applies for core versions earlier than 1.94a */ |
| #define DWC3_DEPCFG_IGN_SEQ_NUM BIT(31) |
| /* These apply for core versions 1.94a and later */ |
| #define DWC3_DEPCFG_ACTION_INIT (0 << 30) |
| #define DWC3_DEPCFG_ACTION_RESTORE BIT(30) |
| #define DWC3_DEPCFG_ACTION_MODIFY (2 << 30) |
| |
| /* DEPXFERCFG parameter 0 */ |
| #define DWC3_DEPXFERCFG_NUM_XFER_RES(n) ((n) & 0xffff) |
| |
| /* U1 Device exit Latency */ |
| #define DWC3_DEFAULT_U1_DEV_EXIT_LAT 0x0A /* Less then 10 microsec */ |
| |
| /* U2 Device exit Latency */ |
| #define DWC3_DEFAULT_U2_DEV_EXIT_LAT 0x1FF /* Less then 511 microsec */ |
| |
| /* Frame/Microframe Number Mask */ |
| #define DWC3_FRNUMBER_MASK 0x3fff |
| /* -------------------------------------------------------------------------- */ |
| |
| #define to_dwc3_request(r) (container_of(r, struct dwc3_request, request)) |
| |
| /** |
| * next_request - gets the next request on the given list |
| * @list: the request list to operate on |
| * |
| * Caller should take care of locking. This function return %NULL or the first |
| * request available on @list. |
| */ |
| static inline struct dwc3_request *next_request(struct list_head *list) |
| { |
| return list_first_entry_or_null(list, struct dwc3_request, list); |
| } |
| |
| /** |
| * dwc3_gadget_move_started_request - move @req to the started_list |
| * @req: the request to be moved |
| * |
| * Caller should take care of locking. This function will move @req from its |
| * current list to the endpoint's started_list. |
| */ |
| static inline void dwc3_gadget_move_started_request(struct dwc3_request *req) |
| { |
| struct dwc3_ep *dep = req->dep; |
| |
| req->status = DWC3_REQUEST_STATUS_STARTED; |
| list_move_tail(&req->list, &dep->started_list); |
| } |
| |
| /** |
| * dwc3_gadget_move_cancelled_request - move @req to the cancelled_list |
| * @req: the request to be moved |
| * |
| * Caller should take care of locking. This function will move @req from its |
| * current list to the endpoint's cancelled_list. |
| */ |
| static inline void dwc3_gadget_move_cancelled_request(struct dwc3_request *req) |
| { |
| struct dwc3_ep *dep = req->dep; |
| |
| req->status = DWC3_REQUEST_STATUS_CANCELLED; |
| list_move_tail(&req->list, &dep->cancelled_list); |
| } |
| |
| void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, |
| int status); |
| |
| void dwc3_ep0_interrupt(struct dwc3 *dwc, |
| const struct dwc3_event_depevt *event); |
| void dwc3_ep0_out_start(struct dwc3 *dwc); |
| int __dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value); |
| int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value); |
| int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request, |
| gfp_t gfp_flags); |
| int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value, int protocol); |
| |
| /** |
| * dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW |
| * @dep: dwc3 endpoint |
| * |
| * Caller should take care of locking. Returns the transfer resource |
| * index for a given endpoint. |
| */ |
| static inline void dwc3_gadget_ep_get_transfer_index(struct dwc3_ep *dep) |
| { |
| u32 res_id; |
| |
| res_id = dwc3_readl(dep->regs, DWC3_DEPCMD); |
| dep->resource_index = DWC3_DEPCMD_GET_RSC_IDX(res_id); |
| } |
| |
| /** |
| * dwc3_gadget_dctl_write_safe - write to DCTL safe from link state change |
| * @dwc: pointer to our context structure |
| * @value: value to write to DCTL |
| * |
| * Use this function when doing read-modify-write to DCTL. It will not |
| * send link state change request. |
| */ |
| static inline void dwc3_gadget_dctl_write_safe(struct dwc3 *dwc, u32 value) |
| { |
| value &= ~DWC3_DCTL_ULSTCHNGREQ_MASK; |
| dwc3_writel(dwc->regs, DWC3_DCTL, value); |
| } |
| |
| #endif /* __DRIVERS_USB_DWC3_GADGET_H */ |