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550a7375 FB |
1 | /* |
2 | * MUSB OTG driver peripheral defines | |
3 | * | |
4 | * Copyright 2005 Mentor Graphics Corporation | |
5 | * Copyright (C) 2005-2006 by Texas Instruments | |
6 | * Copyright (C) 2006-2007 Nokia Corporation | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * version 2 as published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
20 | * 02110-1301 USA | |
21 | * | |
22 | * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED | |
23 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
24 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN | |
25 | * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, | |
26 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
27 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | |
28 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | |
29 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
30 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
31 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
32 | * | |
33 | */ | |
34 | ||
35 | #ifndef __MUSB_GADGET_H | |
36 | #define __MUSB_GADGET_H | |
37 | ||
38 | struct musb_request { | |
39 | struct usb_request request; | |
40 | struct musb_ep *ep; | |
41 | struct musb *musb; | |
42 | u8 tx; /* endpoint direction */ | |
43 | u8 epnum; | |
44 | u8 mapped; | |
45 | }; | |
46 | ||
47 | static inline struct musb_request *to_musb_request(struct usb_request *req) | |
48 | { | |
49 | return req ? container_of(req, struct musb_request, request) : NULL; | |
50 | } | |
51 | ||
52 | extern struct usb_request * | |
53 | musb_alloc_request(struct usb_ep *ep, gfp_t gfp_flags); | |
54 | extern void musb_free_request(struct usb_ep *ep, struct usb_request *req); | |
55 | ||
56 | ||
57 | /* | |
58 | * struct musb_ep - peripheral side view of endpoint rx or tx side | |
59 | */ | |
60 | struct musb_ep { | |
61 | /* stuff towards the head is basically write-once. */ | |
62 | struct usb_ep end_point; | |
63 | char name[12]; | |
64 | struct musb_hw_ep *hw_ep; | |
65 | struct musb *musb; | |
66 | u8 current_epnum; | |
67 | ||
68 | /* ... when enabled/disabled ... */ | |
69 | u8 type; | |
70 | u8 is_in; | |
71 | u16 packet_sz; | |
72 | const struct usb_endpoint_descriptor *desc; | |
73 | struct dma_channel *dma; | |
74 | ||
75 | /* later things are modified based on usage */ | |
76 | struct list_head req_list; | |
77 | ||
47e97605 SS |
78 | u8 wedged; |
79 | ||
550a7375 FB |
80 | /* true if lock must be dropped but req_list may not be advanced */ |
81 | u8 busy; | |
f11d893d ML |
82 | |
83 | u8 hb_mult; | |
550a7375 FB |
84 | }; |
85 | ||
86 | static inline struct musb_ep *to_musb_ep(struct usb_ep *ep) | |
87 | { | |
88 | return ep ? container_of(ep, struct musb_ep, end_point) : NULL; | |
89 | } | |
90 | ||
91 | static inline struct usb_request *next_request(struct musb_ep *ep) | |
92 | { | |
93 | struct list_head *queue = &ep->req_list; | |
94 | ||
95 | if (list_empty(queue)) | |
96 | return NULL; | |
97 | return container_of(queue->next, struct usb_request, list); | |
98 | } | |
99 | ||
100 | extern void musb_g_tx(struct musb *musb, u8 epnum); | |
101 | extern void musb_g_rx(struct musb *musb, u8 epnum); | |
102 | ||
103 | extern const struct usb_ep_ops musb_g_ep0_ops; | |
104 | ||
105 | extern int musb_gadget_setup(struct musb *); | |
106 | extern void musb_gadget_cleanup(struct musb *); | |
107 | ||
108 | extern void musb_g_giveback(struct musb_ep *, struct usb_request *, int); | |
109 | ||
a666e3e6 SS |
110 | extern void musb_ep_restart(struct musb *, struct musb_request *); |
111 | ||
550a7375 | 112 | #endif /* __MUSB_GADGET_H */ |