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s3c2410_udc.h
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1 /*
2  * linux/drivers/usb/gadget/s3c2410_udc.h
3  * Samsung on-chip full speed USB device controllers
4  *
5  * Copyright (C) 2004-2007 Herbert Pötzl - Arnaud Patard
6  * Additional cleanups by Ben Dooks <[email protected]>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  */
13 
14 #ifndef _S3C2410_UDC_H
15 #define _S3C2410_UDC_H
16 
17 struct s3c2410_ep {
18  struct list_head queue;
19  unsigned long last_io; /* jiffies timestamp */
20  struct usb_gadget *gadget;
21  struct s3c2410_udc *dev;
22  struct usb_ep ep;
23  u8 num;
24 
25  unsigned short fifo_size;
26  u8 bEndpointAddress;
27  u8 bmAttributes;
28 
29  unsigned halted : 1;
30  unsigned already_seen : 1;
31  unsigned setup_stage : 1;
32 };
33 
34 
35 /* Warning : ep0 has a fifo of 16 bytes */
36 /* Don't try to set 32 or 64 */
37 /* also testusb 14 fails wit 16 but is */
38 /* fine with 8 */
39 #define EP0_FIFO_SIZE 8
40 #define EP_FIFO_SIZE 64
41 #define DEFAULT_POWER_STATE 0x00
42 
43 #define S3C2440_EP_FIFO_SIZE 128
44 
45 static const char ep0name [] = "ep0";
46 
47 static const char *const ep_name[] = {
48  ep0name, /* everyone has ep0 */
49  /* s3c2410 four bidirectional bulk endpoints */
50  "ep1-bulk", "ep2-bulk", "ep3-bulk", "ep4-bulk",
51 };
52 
53 #define S3C2410_ENDPOINTS ARRAY_SIZE(ep_name)
54 
55 struct s3c2410_request {
56  struct list_head queue; /* ep's requests */
57  struct usb_request req;
58 };
59 
60 enum ep0_state {
61  EP0_IDLE,
62  EP0_IN_DATA_PHASE,
63  EP0_OUT_DATA_PHASE,
64  EP0_END_XFER,
65  EP0_STALL,
66 };
67 
68 static const char *ep0states[]= {
69  "EP0_IDLE",
70  "EP0_IN_DATA_PHASE",
71  "EP0_OUT_DATA_PHASE",
72  "EP0_END_XFER",
73  "EP0_STALL",
74 };
75 
76 struct s3c2410_udc {
77  spinlock_t lock;
78 
79  struct s3c2410_ep ep[S3C2410_ENDPOINTS];
80  int address;
81  struct usb_gadget gadget;
82  struct usb_gadget_driver *driver;
83  struct s3c2410_request fifo_req;
84  u8 fifo_buf[EP_FIFO_SIZE];
85  u16 devstatus;
86 
87  u32 port_status;
88  int ep0state;
89 
90  unsigned got_irq : 1;
91 
92  unsigned req_std : 1;
93  unsigned req_config : 1;
94  unsigned req_pending : 1;
95  u8 vbus;
96  struct dentry *regs_info;
97 };
98 
99 #endif
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