1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /** 3 * gadget.h - DesignWare USB3 DRD Gadget Header 4 * 5 * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com 6 * 7 * Authors: Felipe Balbi <balbi@ti.com>, 8 * Sebastian Andrzej Siewior <bigeasy@linutronix.de> 9 * 10 * Taken from Linux Kernel v3.19-rc1 (drivers/usb/dwc3/gadget.h) and ported 11 * to uboot. 12 * 13 * commit 7a60855972 : usb: dwc3: gadget: fix set_halt() bug with pending 14 transfers 15 * 16 */ 17 18 #ifndef __DRIVERS_USB_DWC3_GADGET_H 19 #define __DRIVERS_USB_DWC3_GADGET_H 20 21 #include <linux/list.h> 22 #include <linux/usb/gadget.h> 23 #include "io.h" 24 25 struct dwc3; 26 #define to_dwc3_ep(ep) (container_of(ep, struct dwc3_ep, endpoint)) 27 #define gadget_to_dwc(g) (container_of(g, struct dwc3, gadget)) 28 29 /* DEPCFG parameter 1 */ 30 #define DWC3_DEPCFG_INT_NUM(n) ((n) << 0) 31 #define DWC3_DEPCFG_XFER_COMPLETE_EN (1 << 8) 32 #define DWC3_DEPCFG_XFER_IN_PROGRESS_EN (1 << 9) 33 #define DWC3_DEPCFG_XFER_NOT_READY_EN (1 << 10) 34 #define DWC3_DEPCFG_FIFO_ERROR_EN (1 << 11) 35 #define DWC3_DEPCFG_STREAM_EVENT_EN (1 << 13) 36 #define DWC3_DEPCFG_BINTERVAL_M1(n) ((n) << 16) 37 #define DWC3_DEPCFG_STREAM_CAPABLE (1 << 24) 38 #define DWC3_DEPCFG_EP_NUMBER(n) ((n) << 25) 39 #define DWC3_DEPCFG_BULK_BASED (1 << 30) 40 #define DWC3_DEPCFG_FIFO_BASED (1 << 31) 41 42 /* DEPCFG parameter 0 */ 43 #define DWC3_DEPCFG_EP_TYPE(n) ((n) << 1) 44 #define DWC3_DEPCFG_MAX_PACKET_SIZE(n) ((n) << 3) 45 #define DWC3_DEPCFG_FIFO_NUMBER(n) ((n) << 17) 46 #define DWC3_DEPCFG_BURST_SIZE(n) ((n) << 22) 47 #define DWC3_DEPCFG_DATA_SEQ_NUM(n) ((n) << 26) 48 /* This applies for core versions earlier than 1.94a */ 49 #define DWC3_DEPCFG_IGN_SEQ_NUM (1 << 31) 50 /* These apply for core versions 1.94a and later */ 51 #define DWC3_DEPCFG_ACTION_INIT (0 << 30) 52 #define DWC3_DEPCFG_ACTION_RESTORE (1 << 30) 53 #define DWC3_DEPCFG_ACTION_MODIFY (2 << 30) 54 55 /* DEPXFERCFG parameter 0 */ 56 #define DWC3_DEPXFERCFG_NUM_XFER_RES(n) ((n) & 0xffff) 57 58 /* -------------------------------------------------------------------------- */ 59 60 #define to_dwc3_request(r) (container_of(r, struct dwc3_request, request)) 61 62 static inline struct dwc3_request *next_request(struct list_head *list) 63 { 64 if (list_empty(list)) 65 return NULL; 66 67 return list_first_entry(list, struct dwc3_request, list); 68 } 69 70 static inline void dwc3_gadget_move_request_queued(struct dwc3_request *req) 71 { 72 struct dwc3_ep *dep = req->dep; 73 74 req->queued = true; 75 list_move_tail(&req->list, &dep->req_queued); 76 } 77 78 void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, 79 int status); 80 81 void dwc3_ep0_interrupt(struct dwc3 *dwc, 82 const struct dwc3_event_depevt *event); 83 void dwc3_ep0_out_start(struct dwc3 *dwc); 84 int __dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value); 85 int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value); 86 int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request, 87 gfp_t gfp_flags); 88 int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value, int protocol); 89 void dwc3_gadget_uboot_handle_interrupt(struct dwc3 *dwc); 90 91 /** 92 * dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW 93 * @dwc: DesignWare USB3 Pointer 94 * @number: DWC endpoint number 95 * 96 * Caller should take care of locking 97 */ 98 static inline u32 dwc3_gadget_ep_get_transfer_index(struct dwc3 *dwc, u8 number) 99 { 100 u32 res_id; 101 102 res_id = dwc3_readl(dwc->regs, DWC3_DEPCMD(number)); 103 104 return DWC3_DEPCMD_GET_RSC_IDX(res_id); 105 } 106 107 #endif /* __DRIVERS_USB_DWC3_GADGET_H */ 108