1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/*
* Intel PXA25x on-chip full speed USB device controller
*
* Copyright (C) 2003 Robert Schwebel <r.schwebel@pengutronix.de>, Pengutronix
* Copyright (C) 2003 David Brownell
* Copyright (C) 2012 Lukasz Dalek <luk0104@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __LINUX_USB_GADGET_PXA25X_H
#define __LINUX_USB_GADGET_PXA25X_H
#include <linux/types.h>
#include <asm/arch/regs-usb.h>
/*
* Prefetching support - only ARMv5.
*/
#ifdef ARCH_HAS_PREFETCH
static inline void prefetch(const void *ptr)
{
__asm__ __volatile__(
"pld\t%a0"
:
: "p" (ptr)
: "cc");
}
#define prefetchw(ptr) prefetch(ptr)
#endif /* ARCH_HAS_PREFETCH */
/*-------------------------------------------------------------------------*/
#define UDC_REGS ((struct pxa25x_udc_regs *)PXA25X_UDC_BASE)
/*-------------------------------------------------------------------------*/
struct pxa2xx_udc_mach_info {
int (*udc_is_connected)(void); /* do we see host? */
void (*udc_command)(int cmd);
#define PXA2XX_UDC_CMD_CONNECT 0 /* let host see us */
#define PXA2XX_UDC_CMD_DISCONNECT 1 /* so host won't see us */
};
struct pxa25x_udc;
struct pxa25x_ep {
struct usb_ep ep;
struct pxa25x_udc *dev;
const struct usb_endpoint_descriptor *desc;
struct list_head queue;
unsigned long pio_irqs;
unsigned short fifo_size;
u8 bEndpointAddress;
u8 bmAttributes;
unsigned stopped:1;
/* UDCCS = UDC Control/Status for this EP
* UBCR = UDC Byte Count Remaining (contents of OUT fifo)
* UDDR = UDC Endpoint Data Register (the fifo)
* DRCM = DMA Request Channel Map
*/
u32 *reg_udccs;
u32 *reg_ubcr;
u32 *reg_uddr;
};
struct pxa25x_request {
struct usb_request req;
struct list_head queue;
};
enum ep0_state {
EP0_IDLE,
EP0_IN_DATA_PHASE,
EP0_OUT_DATA_PHASE,
EP0_END_XFER,
EP0_STALL,
};
#define EP0_FIFO_SIZE 16U
#define BULK_FIFO_SIZE 64U
#define ISO_FIFO_SIZE 256U
#define INT_FIFO_SIZE 8U
struct udc_stats {
struct ep0stats {
unsigned long ops;
unsigned long bytes;
} read, write;
unsigned long irqs;
};
#ifdef CONFIG_USB_PXA25X_SMALL
/* when memory's tight, SMALL config saves code+data. */
#define PXA_UDC_NUM_ENDPOINTS 3
#endif
#ifndef PXA_UDC_NUM_ENDPOINTS
#define PXA_UDC_NUM_ENDPOINTS 16
#endif
struct pxa25x_watchdog {
unsigned running:1;
ulong period;
ulong base;
struct pxa25x_udc *udc;
void (*function)(struct pxa25x_udc *udc);
};
struct pxa25x_udc {
struct usb_gadget gadget;
struct usb_gadget_driver *driver;
struct pxa25x_udc_regs *regs;
enum ep0_state ep0state;
struct udc_stats stats;
unsigned got_irq:1,
pullup:1,
has_cfr:1,
req_pending:1,
req_std:1,
req_config:1,
active:1;
struct clk *clk;
struct pxa2xx_udc_mach_info *mach;
u64 dma_mask;
struct pxa25x_ep ep[PXA_UDC_NUM_ENDPOINTS];
struct pxa25x_watchdog watchdog;
};
/*-------------------------------------------------------------------------*/
static struct pxa25x_udc *the_controller;
/*-------------------------------------------------------------------------*/
#ifndef DEBUG
# define NOISY 0
#endif
#endif /* __LINUX_USB_GADGET_PXA25X_H */
|
