| Tom Rini | 10e4779 | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| Ilya Yanok | 06bb920 | 2012-11-06 13:48:21 +0000 | [diff] [blame] | 2 | /* |
| 3 | * MUSB OTG driver peripheral defines |
| 4 | * |
| 5 | * Copyright 2005 Mentor Graphics Corporation |
| 6 | * Copyright (C) 2005-2006 by Texas Instruments |
| 7 | * Copyright (C) 2006-2007 Nokia Corporation |
| Ilya Yanok | 06bb920 | 2012-11-06 13:48:21 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #ifndef __MUSB_GADGET_H |
| 11 | #define __MUSB_GADGET_H |
| 12 | |
| 13 | #include <linux/list.h> |
| 14 | #ifdef __UBOOT__ |
| 15 | #include <asm/byteorder.h> |
| Masahiro Yamada | 56a931c | 2016-09-21 11:28:55 +0900 | [diff] [blame] | 16 | #include <linux/errno.h> |
| Ilya Yanok | 06bb920 | 2012-11-06 13:48:21 +0000 | [diff] [blame] | 17 | #include <linux/usb/ch9.h> |
| 18 | #include <linux/usb/gadget.h> |
| 19 | #endif |
| 20 | |
| 21 | enum buffer_map_state { |
| 22 | UN_MAPPED = 0, |
| 23 | PRE_MAPPED, |
| 24 | MUSB_MAPPED |
| 25 | }; |
| 26 | |
| 27 | struct musb_request { |
| 28 | struct usb_request request; |
| 29 | struct list_head list; |
| 30 | struct musb_ep *ep; |
| 31 | struct musb *musb; |
| 32 | u8 tx; /* endpoint direction */ |
| 33 | u8 epnum; |
| 34 | enum buffer_map_state map_state; |
| 35 | }; |
| 36 | |
| 37 | static inline struct musb_request *to_musb_request(struct usb_request *req) |
| 38 | { |
| 39 | return req ? container_of(req, struct musb_request, request) : NULL; |
| 40 | } |
| 41 | |
| 42 | extern struct usb_request * |
| 43 | musb_alloc_request(struct usb_ep *ep, gfp_t gfp_flags); |
| 44 | extern void musb_free_request(struct usb_ep *ep, struct usb_request *req); |
| 45 | |
| 46 | |
| 47 | /* |
| 48 | * struct musb_ep - peripheral side view of endpoint rx or tx side |
| 49 | */ |
| 50 | struct musb_ep { |
| 51 | /* stuff towards the head is basically write-once. */ |
| 52 | struct usb_ep end_point; |
| 53 | char name[12]; |
| 54 | struct musb_hw_ep *hw_ep; |
| 55 | struct musb *musb; |
| 56 | u8 current_epnum; |
| 57 | |
| 58 | /* ... when enabled/disabled ... */ |
| 59 | u8 type; |
| 60 | u8 is_in; |
| 61 | u16 packet_sz; |
| 62 | const struct usb_endpoint_descriptor *desc; |
| 63 | struct dma_channel *dma; |
| 64 | |
| 65 | /* later things are modified based on usage */ |
| 66 | struct list_head req_list; |
| 67 | |
| 68 | u8 wedged; |
| 69 | |
| 70 | /* true if lock must be dropped but req_list may not be advanced */ |
| 71 | u8 busy; |
| 72 | |
| 73 | u8 hb_mult; |
| 74 | }; |
| 75 | |
| 76 | static inline struct musb_ep *to_musb_ep(struct usb_ep *ep) |
| 77 | { |
| 78 | return ep ? container_of(ep, struct musb_ep, end_point) : NULL; |
| 79 | } |
| 80 | |
| 81 | static inline struct musb_request *next_request(struct musb_ep *ep) |
| 82 | { |
| 83 | struct list_head *queue = &ep->req_list; |
| 84 | |
| 85 | if (list_empty(queue)) |
| 86 | return NULL; |
| 87 | return container_of(queue->next, struct musb_request, list); |
| 88 | } |
| 89 | |
| 90 | extern void musb_g_tx(struct musb *musb, u8 epnum); |
| 91 | extern void musb_g_rx(struct musb *musb, u8 epnum); |
| 92 | |
| 93 | extern const struct usb_ep_ops musb_g_ep0_ops; |
| 94 | |
| 95 | extern int musb_gadget_setup(struct musb *); |
| 96 | extern void musb_gadget_cleanup(struct musb *); |
| 97 | |
| 98 | extern void musb_g_giveback(struct musb_ep *, struct usb_request *, int); |
| 99 | |
| 100 | extern void musb_ep_restart(struct musb *, struct musb_request *); |
| 101 | |
| 102 | #ifdef __UBOOT__ |
| 103 | int musb_gadget_start(struct usb_gadget *g, struct usb_gadget_driver *driver); |
| 104 | #endif |
| 105 | #endif /* __MUSB_GADGET_H */ |