1 /* 2 * gadget.h - DesignWare USB3 DRD Gadget Header 3 * 4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com 5 * 6 * Authors: Felipe Balbi <balbi@ti.com>, 7 * Sebastian Andrzej Siewior <bigeasy@linutronix.de> 8 * 9 * This program is free software: you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 of 11 * the License as published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 */ 18 19 #ifndef __DRIVERS_USB_DWC3_GADGET_H 20 #define __DRIVERS_USB_DWC3_GADGET_H 21 22 #include <linux/list.h> 23 #include <linux/usb/gadget.h> 24 #include "io.h" 25 26 struct dwc3; 27 #define to_dwc3_ep(ep) (container_of(ep, struct dwc3_ep, endpoint)) 28 #define gadget_to_dwc(g) (container_of(g, struct dwc3, gadget)) 29 30 /* DEPCFG parameter 1 */ 31 #define DWC3_DEPCFG_INT_NUM(n) (((n) & 0x1f) << 0) 32 #define DWC3_DEPCFG_XFER_COMPLETE_EN BIT(8) 33 #define DWC3_DEPCFG_XFER_IN_PROGRESS_EN BIT(9) 34 #define DWC3_DEPCFG_XFER_NOT_READY_EN BIT(10) 35 #define DWC3_DEPCFG_FIFO_ERROR_EN BIT(11) 36 #define DWC3_DEPCFG_STREAM_EVENT_EN BIT(12) 37 #define DWC3_DEPCFG_BINTERVAL_M1(n) (((n) & 0xff) << 16) 38 #define DWC3_DEPCFG_STREAM_CAPABLE BIT(24) 39 #define DWC3_DEPCFG_EP_NUMBER(n) (((n) & 0x1f) << 25) 40 #define DWC3_DEPCFG_BULK_BASED BIT(30) 41 #define DWC3_DEPCFG_FIFO_BASED BIT(31) 42 43 /* DEPCFG parameter 0 */ 44 #define DWC3_DEPCFG_EP_TYPE(n) (((n) & 0x3) << 1) 45 #define DWC3_DEPCFG_MAX_PACKET_SIZE(n) (((n) & 0x7ff) << 3) 46 #define DWC3_DEPCFG_FIFO_NUMBER(n) (((n) & 0x1f) << 17) 47 #define DWC3_DEPCFG_BURST_SIZE(n) (((n) & 0xf) << 22) 48 #define DWC3_DEPCFG_DATA_SEQ_NUM(n) ((n) << 26) 49 /* This applies for core versions earlier than 1.94a */ 50 #define DWC3_DEPCFG_IGN_SEQ_NUM BIT(31) 51 /* These apply for core versions 1.94a and later */ 52 #define DWC3_DEPCFG_ACTION_INIT (0 << 30) 53 #define DWC3_DEPCFG_ACTION_RESTORE BIT(30) 54 #define DWC3_DEPCFG_ACTION_MODIFY (2 << 30) 55 56 /* DEPXFERCFG parameter 0 */ 57 #define DWC3_DEPXFERCFG_NUM_XFER_RES(n) ((n) & 0xffff) 58 59 /* -------------------------------------------------------------------------- */ 60 61 #define to_dwc3_request(r) (container_of(r, struct dwc3_request, request)) 62 63 /** 64 * next_request - gets the next request on the given list 65 * @list: the request list to operate on 66 * 67 * Caller should take care of locking. This function return %NULL or the first 68 * request available on @list. 69 */ 70 static inline struct dwc3_request *next_request(struct list_head *list) 71 { 72 return list_first_entry_or_null(list, struct dwc3_request, list); 73 } 74 75 /** 76 * dwc3_gadget_move_started_request - move @req to the started_list 77 * @req: the request to be moved 78 * 79 * Caller should take care of locking. This function will move @req from its 80 * current list to the endpoint's started_list. 81 */ 82 static inline void dwc3_gadget_move_started_request(struct dwc3_request *req) 83 { 84 struct dwc3_ep *dep = req->dep; 85 86 req->started = true; 87 list_move_tail(&req->list, &dep->started_list); 88 } 89 90 void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, 91 int status); 92 93 void dwc3_ep0_interrupt(struct dwc3 *dwc, 94 const struct dwc3_event_depevt *event); 95 void dwc3_ep0_out_start(struct dwc3 *dwc); 96 int __dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value); 97 int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value); 98 int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request, 99 gfp_t gfp_flags); 100 int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value, int protocol); 101 102 /** 103 * dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW 104 * @dep: dwc3 endpoint 105 * 106 * Caller should take care of locking. Returns the transfer resource 107 * index for a given endpoint. 108 */ 109 static inline u32 dwc3_gadget_ep_get_transfer_index(struct dwc3_ep *dep) 110 { 111 u32 res_id; 112 113 res_id = dwc3_readl(dep->regs, DWC3_DEPCMD); 114 115 return DWC3_DEPCMD_GET_RSC_IDX(res_id); 116 } 117 118 #endif /* __DRIVERS_USB_DWC3_GADGET_H */ 119