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 */