1 /* Copyright (C) 2007,2008 Freescale Semiconductor, Inc.
3 * This program is free software; you can redistribute it and/or modify it
4 * under the terms of the GNU General Public License as published by the
5 * Free Software Foundation; either version 2 of the License, or (at your
6 * option) any later version.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 675 Mass Ave, Cambridge, MA 02139, USA.
18 #ifndef __LINUX_USB_OTG_FSM_H
19 #define __LINUX_USB_OTG_FSM_H
21 #include <linux/mutex.h>
22 #include <linux/errno.h>
27 #define VDBG(fmt, args...) pr_debug("[%s] " fmt , \
30 #define VDBG(stuff...) do {} while (0)
34 #define MPC_LOC printk("Current Location [%s]:[%d]\n", __FILE__, __LINE__)
36 #define MPC_LOC do {} while (0)
39 #define PROTO_UNDEF (0)
40 #define PROTO_HOST (1)
41 #define PROTO_GADGET (2)
44 /* Standard OTG timers */
52 /* Auxiliary timers */
60 /* OTG state machine according to the OTG spec */
92 /* Internal variables */
98 /* Informative variables */
103 /* Auxilary informative variables */
104 int a_suspend_req_inf
;
106 /* Timeout indicator for timers */
107 int a_wait_vrise_tmout
;
108 int a_wait_vfall_tmout
;
109 int a_wait_bcon_tmout
;
110 int a_aidl_bdis_tmout
;
111 int b_ase0_brst_tmout
;
112 int a_bidl_adis_tmout
;
114 struct otg_fsm_ops
*ops
;
117 /* Current usb protocol used: 0:undefine; 1:host; 2:client */
123 void (*chrg_vbus
)(struct otg_fsm
*fsm
, int on
);
124 void (*drv_vbus
)(struct otg_fsm
*fsm
, int on
);
125 void (*loc_conn
)(struct otg_fsm
*fsm
, int on
);
126 void (*loc_sof
)(struct otg_fsm
*fsm
, int on
);
127 void (*start_pulse
)(struct otg_fsm
*fsm
);
128 void (*start_adp_prb
)(struct otg_fsm
*fsm
);
129 void (*start_adp_sns
)(struct otg_fsm
*fsm
);
130 void (*add_timer
)(struct otg_fsm
*fsm
, enum otg_fsm_timer timer
);
131 void (*del_timer
)(struct otg_fsm
*fsm
, enum otg_fsm_timer timer
);
132 int (*start_host
)(struct otg_fsm
*fsm
, int on
);
133 int (*start_gadget
)(struct otg_fsm
*fsm
, int on
);
137 static inline int otg_chrg_vbus(struct otg_fsm
*fsm
, int on
)
139 if (!fsm
->ops
->chrg_vbus
)
141 fsm
->ops
->chrg_vbus(fsm
, on
);
145 static inline int otg_drv_vbus(struct otg_fsm
*fsm
, int on
)
147 if (!fsm
->ops
->drv_vbus
)
149 if (fsm
->drv_vbus
!= on
) {
151 fsm
->ops
->drv_vbus(fsm
, on
);
156 static inline int otg_loc_conn(struct otg_fsm
*fsm
, int on
)
158 if (!fsm
->ops
->loc_conn
)
160 if (fsm
->loc_conn
!= on
) {
162 fsm
->ops
->loc_conn(fsm
, on
);
167 static inline int otg_loc_sof(struct otg_fsm
*fsm
, int on
)
169 if (!fsm
->ops
->loc_sof
)
171 if (fsm
->loc_sof
!= on
) {
173 fsm
->ops
->loc_sof(fsm
, on
);
178 static inline int otg_start_pulse(struct otg_fsm
*fsm
)
180 if (!fsm
->ops
->start_pulse
)
182 if (!fsm
->data_pulse
) {
184 fsm
->ops
->start_pulse(fsm
);
189 static inline int otg_start_adp_prb(struct otg_fsm
*fsm
)
191 if (!fsm
->ops
->start_adp_prb
)
196 fsm
->ops
->start_adp_prb(fsm
);
201 static inline int otg_start_adp_sns(struct otg_fsm
*fsm
)
203 if (!fsm
->ops
->start_adp_sns
)
207 fsm
->ops
->start_adp_sns(fsm
);
212 static inline int otg_add_timer(struct otg_fsm
*fsm
, enum otg_fsm_timer timer
)
214 if (!fsm
->ops
->add_timer
)
216 fsm
->ops
->add_timer(fsm
, timer
);
220 static inline int otg_del_timer(struct otg_fsm
*fsm
, enum otg_fsm_timer timer
)
222 if (!fsm
->ops
->del_timer
)
224 fsm
->ops
->del_timer(fsm
, timer
);
228 static inline int otg_start_host(struct otg_fsm
*fsm
, int on
)
230 if (!fsm
->ops
->start_host
)
232 return fsm
->ops
->start_host(fsm
, on
);
235 static inline int otg_start_gadget(struct otg_fsm
*fsm
, int on
)
237 if (!fsm
->ops
->start_gadget
)
239 return fsm
->ops
->start_gadget(fsm
, on
);
242 int otg_statemachine(struct otg_fsm
*fsm
);
244 #endif /* __LINUX_USB_OTG_FSM_H */
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