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Felipe Balbi550a7372008-07-24 12:27:36 +03001/*
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
38struct 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
47static 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
52extern struct usb_request *
53musb_alloc_request(struct usb_ep *ep, gfp_t gfp_flags);
54extern 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 */
60struct 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
Sergei Shtylyov47e97602009-11-18 22:51:51 +030078 u8 wedged;
79
Felipe Balbi550a7372008-07-24 12:27:36 +030080 /* true if lock must be dropped but req_list may not be advanced */
81 u8 busy;
82};
83
84static inline struct musb_ep *to_musb_ep(struct usb_ep *ep)
85{
86 return ep ? container_of(ep, struct musb_ep, end_point) : NULL;
87}
88
89static inline struct usb_request *next_request(struct musb_ep *ep)
90{
91 struct list_head *queue = &ep->req_list;
92
93 if (list_empty(queue))
94 return NULL;
95 return container_of(queue->next, struct usb_request, list);
96}
97
98extern void musb_g_tx(struct musb *musb, u8 epnum);
99extern void musb_g_rx(struct musb *musb, u8 epnum);
100
101extern const struct usb_ep_ops musb_g_ep0_ops;
102
103extern int musb_gadget_setup(struct musb *);
104extern void musb_gadget_cleanup(struct musb *);
105
106extern void musb_g_giveback(struct musb_ep *, struct usb_request *, int);
107
Felipe Balbi550a7372008-07-24 12:27:36 +0300108#endif /* __MUSB_GADGET_H */