Commit | Line | Data |
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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 | ||
ad1adb89 FB |
38 | #include <linux/list.h> |
39 | ||
b7b741ea | 40 | #if IS_ENABLED(CONFIG_USB_MUSB_GADGET) || IS_ENABLED(CONFIG_USB_MUSB_DUAL_ROLE) |
c2a2759d DM |
41 | extern irqreturn_t musb_g_ep0_irq(struct musb *); |
42 | extern void musb_g_tx(struct musb *, u8); | |
43 | extern void musb_g_rx(struct musb *, u8); | |
44 | extern void musb_g_reset(struct musb *); | |
45 | extern void musb_g_suspend(struct musb *); | |
46 | extern void musb_g_resume(struct musb *); | |
47 | extern void musb_g_wakeup(struct musb *); | |
48 | extern void musb_g_disconnect(struct musb *); | |
49 | extern void musb_gadget_cleanup(struct musb *); | |
50 | extern int musb_gadget_setup(struct musb *); | |
51 | ||
b7b741ea DM |
52 | #else |
53 | static inline irqreturn_t musb_g_ep0_irq(struct musb *musb) | |
54 | { | |
55 | return 0; | |
56 | } | |
57 | ||
58 | static inline void musb_g_tx(struct musb *musb, u8 epnum) {} | |
59 | static inline void musb_g_rx(struct musb *musb, u8 epnum) {} | |
60 | static inline void musb_g_reset(struct musb *musb) {} | |
61 | static inline void musb_g_suspend(struct musb *musb) {} | |
62 | static inline void musb_g_resume(struct musb *musb) {} | |
63 | static inline void musb_g_wakeup(struct musb *musb) {} | |
64 | static inline void musb_g_disconnect(struct musb *musb) {} | |
65 | static inline void musb_gadget_cleanup(struct musb *musb) {} | |
66 | static inline int musb_gadget_setup(struct musb *musb) | |
67 | { | |
68 | return 0; | |
69 | } | |
70 | #endif | |
71 | ||
c65bfa62 MYK |
72 | enum buffer_map_state { |
73 | UN_MAPPED = 0, | |
74 | PRE_MAPPED, | |
75 | MUSB_MAPPED | |
76 | }; | |
77 | ||
550a7375 FB |
78 | struct musb_request { |
79 | struct usb_request request; | |
ad1adb89 | 80 | struct list_head list; |
550a7375 FB |
81 | struct musb_ep *ep; |
82 | struct musb *musb; | |
83 | u8 tx; /* endpoint direction */ | |
84 | u8 epnum; | |
c65bfa62 | 85 | enum buffer_map_state map_state; |
550a7375 FB |
86 | }; |
87 | ||
88 | static inline struct musb_request *to_musb_request(struct usb_request *req) | |
89 | { | |
90 | return req ? container_of(req, struct musb_request, request) : NULL; | |
91 | } | |
92 | ||
93 | extern struct usb_request * | |
94 | musb_alloc_request(struct usb_ep *ep, gfp_t gfp_flags); | |
95 | extern void musb_free_request(struct usb_ep *ep, struct usb_request *req); | |
96 | ||
97 | ||
98 | /* | |
99 | * struct musb_ep - peripheral side view of endpoint rx or tx side | |
100 | */ | |
101 | struct musb_ep { | |
102 | /* stuff towards the head is basically write-once. */ | |
103 | struct usb_ep end_point; | |
104 | char name[12]; | |
105 | struct musb_hw_ep *hw_ep; | |
106 | struct musb *musb; | |
107 | u8 current_epnum; | |
108 | ||
109 | /* ... when enabled/disabled ... */ | |
110 | u8 type; | |
111 | u8 is_in; | |
112 | u16 packet_sz; | |
113 | const struct usb_endpoint_descriptor *desc; | |
114 | struct dma_channel *dma; | |
115 | ||
116 | /* later things are modified based on usage */ | |
117 | struct list_head req_list; | |
118 | ||
47e97605 SS |
119 | u8 wedged; |
120 | ||
550a7375 FB |
121 | /* true if lock must be dropped but req_list may not be advanced */ |
122 | u8 busy; | |
f11d893d ML |
123 | |
124 | u8 hb_mult; | |
550a7375 FB |
125 | }; |
126 | ||
127 | static inline struct musb_ep *to_musb_ep(struct usb_ep *ep) | |
128 | { | |
129 | return ep ? container_of(ep, struct musb_ep, end_point) : NULL; | |
130 | } | |
131 | ||
ad1adb89 | 132 | static inline struct musb_request *next_request(struct musb_ep *ep) |
550a7375 FB |
133 | { |
134 | struct list_head *queue = &ep->req_list; | |
135 | ||
136 | if (list_empty(queue)) | |
137 | return NULL; | |
ad1adb89 | 138 | return container_of(queue->next, struct musb_request, list); |
550a7375 FB |
139 | } |
140 | ||
550a7375 FB |
141 | extern const struct usb_ep_ops musb_g_ep0_ops; |
142 | ||
550a7375 FB |
143 | extern void musb_g_giveback(struct musb_ep *, struct usb_request *, int); |
144 | ||
a666e3e6 SS |
145 | extern void musb_ep_restart(struct musb *, struct musb_request *); |
146 | ||
550a7375 | 147 | #endif /* __MUSB_GADGET_H */ |