1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * linux/drivers/usb/gadget/s3c2410_udc.h
4 * Samsung on-chip full speed USB device controllers
5 *
6 * Copyright (C) 2004-2007 Herbert Pötzl - Arnaud Patard
7 *	Additional cleanups by Ben Dooks <ben-linux@fluff.org>
8 */
9
10#ifndef _S3C2410_UDC_H
11#define _S3C2410_UDC_H
12
13struct s3c2410_ep {
14	struct list_head		queue;
15	unsigned long			last_io;	/* jiffies timestamp */
16	struct usb_gadget		*gadget;
17	struct s3c2410_udc		*dev;
18	struct usb_ep			ep;
19	u8				num;
20
21	unsigned short			fifo_size;
22	u8				bEndpointAddress;
23	u8				bmAttributes;
24
25	unsigned			halted : 1;
26	unsigned			already_seen : 1;
27	unsigned			setup_stage : 1;
28};
29
30
31/* Warning : ep0 has a fifo of 16 bytes */
32/* Don't try to set 32 or 64            */
33/* also testusb 14 fails  wit 16 but is */
34/* fine with 8                          */
35#define EP0_FIFO_SIZE		 8
36#define EP_FIFO_SIZE		64
37#define DEFAULT_POWER_STATE	0x00
38
39#define S3C2440_EP_FIFO_SIZE	128
40
41static const char ep0name [] = "ep0";
42
43static const char *const ep_name[] = {
44	ep0name,                                /* everyone has ep0 */
45	/* s3c2410 four bidirectional bulk endpoints */
46	"ep1-bulk", "ep2-bulk", "ep3-bulk", "ep4-bulk",
47};
48
49#define S3C2410_ENDPOINTS       ARRAY_SIZE(ep_name)
50
51struct s3c2410_request {
52	struct list_head		queue;		/* ep's requests */
53	struct usb_request		req;
54};
55
56enum ep0_state {
57        EP0_IDLE,
58        EP0_IN_DATA_PHASE,
59        EP0_OUT_DATA_PHASE,
60        EP0_END_XFER,
61        EP0_STALL,
62};
63
64static const char *ep0states[]= {
65        "EP0_IDLE",
66        "EP0_IN_DATA_PHASE",
67        "EP0_OUT_DATA_PHASE",
68        "EP0_END_XFER",
69        "EP0_STALL",
70};
71
72struct s3c2410_udc {
73	spinlock_t			lock;
74
75	struct s3c2410_ep		ep[S3C2410_ENDPOINTS];
76	int				address;
77	struct usb_gadget		gadget;
78	struct usb_gadget_driver	*driver;
79	struct s3c2410_request		fifo_req;
80	u8				fifo_buf[EP_FIFO_SIZE];
81	u16				devstatus;
82
83	u32				port_status;
84	int				ep0state;
85
86	unsigned			got_irq : 1;
87
88	unsigned			req_std : 1;
89	unsigned			req_config : 1;
90	unsigned			req_pending : 1;
91	u8				vbus;
92	struct dentry			*regs_info;
93	int				irq;
94};
95#define to_s3c2410(g)	(container_of((g), struct s3c2410_udc, gadget))
96
97#endif
98