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
|
/* Copyright (C) 2007,2008 Freescale Semiconductor, Inc.
*
* 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.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#undef VERBOSE
#ifdef VERBOSE
#define VDBG(fmt, args...) pr_debug("[%s] " fmt , \
__func__, ## args)
#else
#define VDBG(stuff...) do {} while (0)
#endif
#ifdef VERBOSE
#define MPC_LOC printk("Current Location [%s]:[%d]\n", __FILE__, __LINE__)
#else
#define MPC_LOC do {} while (0)
#endif
#define PROTO_UNDEF (0)
#define PROTO_HOST (1)
#define PROTO_GADGET (2)
/* OTG state machine according to the OTG spec */
struct otg_fsm {
/* Input */
int a_bus_resume;
int a_bus_suspend;
int a_conn;
int a_sess_vld;
int a_srp_det;
int a_vbus_vld;
int b_bus_resume;
int b_bus_suspend;
int b_conn;
int b_se0_srp;
int b_sess_end;
int b_sess_vld;
int id;
/* Internal variables */
int a_set_b_hnp_en;
int b_srp_done;
int b_hnp_enable;
/* Timeout indicator for timers */
int a_wait_vrise_tmout;
int a_wait_bcon_tmout;
int a_aidl_bdis_tmout;
int b_ase0_brst_tmout;
/* Informative variables */
int a_bus_drop;
int a_bus_req;
int a_clr_err;
int a_suspend_req;
int b_bus_req;
/* Output */
int drv_vbus;
int loc_conn;
int loc_sof;
struct otg_fsm_ops *ops;
struct usb_otg *otg;
/* Current usb protocol used: 0:undefine; 1:host; 2:client */
int protocol;
spinlock_t lock;
};
struct otg_fsm_ops {
void (*chrg_vbus)(int on);
void (*drv_vbus)(int on);
void (*loc_conn)(int on);
void (*loc_sof)(int on);
void (*start_pulse)(void);
void (*add_timer)(void *timer);
void (*del_timer)(void *timer);
int (*start_host)(struct otg_fsm *fsm, int on);
int (*start_gadget)(struct otg_fsm *fsm, int on);
};
static inline void otg_chrg_vbus(struct otg_fsm *fsm, int on)
{
fsm->ops->chrg_vbus(on);
}
static inline void otg_drv_vbus(struct otg_fsm *fsm, int on)
{
if (fsm->drv_vbus != on) {
fsm->drv_vbus = on;
fsm->ops->drv_vbus(on);
}
}
static inline void otg_loc_conn(struct otg_fsm *fsm, int on)
{
if (fsm->loc_conn != on) {
fsm->loc_conn = on;
fsm->ops->loc_conn(on);
}
}
static inline void otg_loc_sof(struct otg_fsm *fsm, int on)
{
if (fsm->loc_sof != on) {
fsm->loc_sof = on;
fsm->ops->loc_sof(on);
}
}
static inline void otg_start_pulse(struct otg_fsm *fsm)
{
fsm->ops->start_pulse();
}
static inline void otg_add_timer(struct otg_fsm *fsm, void *timer)
{
fsm->ops->add_timer(timer);
}
static inline void otg_del_timer(struct otg_fsm *fsm, void *timer)
{
fsm->ops->del_timer(timer);
}
int otg_statemachine(struct otg_fsm *fsm);
/* Defined by device specific driver, for different timer implementation */
extern struct fsl_otg_timer *a_wait_vrise_tmr, *a_wait_bcon_tmr,
*a_aidl_bdis_tmr, *b_ase0_brst_tmr, *b_se0_srp_tmr, *b_srp_fail_tmr,
*a_wait_enum_tmr;
|
