Lines Matching defs:fsm
31 #include <linux/usb/otg-fsm.h>
34 static int otg_set_protocol(struct otg_fsm *fsm, int protocol)
38 if (fsm->protocol != protocol) {
39 VDBG("Changing role fsm->protocol= %d; new protocol= %d\n",
40 fsm->protocol, protocol);
42 if (fsm->protocol == PROTO_HOST)
43 ret = otg_start_host(fsm, 0);
44 else if (fsm->protocol == PROTO_GADGET)
45 ret = otg_start_gadget(fsm, 0);
51 ret = otg_start_host(fsm, 1);
53 ret = otg_start_gadget(fsm, 1);
57 fsm->protocol = protocol;
67 static void otg_leave_state(struct otg_fsm *fsm, enum usb_otg_state old_state)
71 otg_del_timer(fsm, B_SE0_SRP);
72 fsm->b_se0_srp = 0;
73 fsm->adp_sns = 0;
74 fsm->adp_prb = 0;
77 fsm->data_pulse = 0;
78 fsm->b_srp_done = 0;
83 otg_del_timer(fsm, B_ASE0_BRST);
84 fsm->b_ase0_brst_tmout = 0;
89 fsm->adp_prb = 0;
92 otg_del_timer(fsm, A_WAIT_VRISE);
93 fsm->a_wait_vrise_tmout = 0;
96 otg_del_timer(fsm, A_WAIT_BCON);
97 fsm->a_wait_bcon_tmout = 0;
100 otg_del_timer(fsm, A_WAIT_ENUM);
103 otg_del_timer(fsm, A_AIDL_BDIS);
104 fsm->a_aidl_bdis_tmout = 0;
105 fsm->a_suspend_req_inf = 0;
108 otg_del_timer(fsm, A_BIDL_ADIS);
109 fsm->a_bidl_adis_tmout = 0;
112 otg_del_timer(fsm, A_WAIT_VFALL);
113 fsm->a_wait_vfall_tmout = 0;
114 otg_del_timer(fsm, A_WAIT_VRISE);
124 static int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
127 if (fsm->otg->phy->state == new_state)
130 otg_leave_state(fsm, fsm->otg->phy->state);
133 otg_drv_vbus(fsm, 0);
134 otg_chrg_vbus(fsm, 0);
135 otg_loc_conn(fsm, 0);
136 otg_loc_sof(fsm, 0);
141 otg_start_adp_sns(fsm);
142 otg_set_protocol(fsm, PROTO_UNDEF);
143 otg_add_timer(fsm, B_SE0_SRP);
146 otg_start_pulse(fsm);
147 otg_loc_sof(fsm, 0);
148 otg_set_protocol(fsm, PROTO_UNDEF);
149 otg_add_timer(fsm, B_SRP_FAIL);
152 otg_chrg_vbus(fsm, 0);
153 otg_loc_conn(fsm, 1);
154 otg_loc_sof(fsm, 0);
155 otg_set_protocol(fsm, PROTO_GADGET);
158 otg_chrg_vbus(fsm, 0);
159 otg_loc_conn(fsm, 0);
160 otg_loc_sof(fsm, 0);
161 otg_set_protocol(fsm, PROTO_HOST);
162 otg_add_timer(fsm, B_ASE0_BRST);
163 fsm->a_bus_suspend = 0;
166 otg_chrg_vbus(fsm, 0);
167 otg_loc_conn(fsm, 0);
168 otg_loc_sof(fsm, 1);
169 otg_set_protocol(fsm, PROTO_HOST);
170 usb_bus_start_enum(fsm->otg->host,
171 fsm->otg->host->otg_port);
174 otg_drv_vbus(fsm, 0);
175 otg_chrg_vbus(fsm, 0);
176 otg_loc_conn(fsm, 0);
177 otg_loc_sof(fsm, 0);
178 otg_start_adp_prb(fsm);
179 otg_set_protocol(fsm, PROTO_HOST);
182 otg_drv_vbus(fsm, 1);
183 otg_loc_conn(fsm, 0);
184 otg_loc_sof(fsm, 0);
185 otg_set_protocol(fsm, PROTO_HOST);
186 otg_add_timer(fsm, A_WAIT_VRISE);
189 otg_drv_vbus(fsm, 1);
190 otg_loc_conn(fsm, 0);
191 otg_loc_sof(fsm, 0);
192 otg_set_protocol(fsm, PROTO_HOST);
193 otg_add_timer(fsm, A_WAIT_BCON);
196 otg_drv_vbus(fsm, 1);
197 otg_loc_conn(fsm, 0);
198 otg_loc_sof(fsm, 1);
199 otg_set_protocol(fsm, PROTO_HOST);
204 if (!fsm->a_bus_req || fsm->a_suspend_req_inf)
205 otg_add_timer(fsm, A_WAIT_ENUM);
208 otg_drv_vbus(fsm, 1);
209 otg_loc_conn(fsm, 0);
210 otg_loc_sof(fsm, 0);
211 otg_set_protocol(fsm, PROTO_HOST);
212 otg_add_timer(fsm, A_AIDL_BDIS);
216 otg_loc_conn(fsm, 1);
217 otg_loc_sof(fsm, 0);
218 otg_set_protocol(fsm, PROTO_GADGET);
219 otg_drv_vbus(fsm, 1);
220 otg_add_timer(fsm, A_BIDL_ADIS);
223 otg_drv_vbus(fsm, 0);
224 otg_loc_conn(fsm, 0);
225 otg_loc_sof(fsm, 0);
226 otg_set_protocol(fsm, PROTO_HOST);
227 otg_add_timer(fsm, A_WAIT_VFALL);
230 otg_drv_vbus(fsm, 0);
231 otg_loc_conn(fsm, 0);
232 otg_loc_sof(fsm, 0);
233 otg_set_protocol(fsm, PROTO_UNDEF);
239 fsm->otg->phy->state = new_state;
244 int otg_statemachine(struct otg_fsm *fsm)
248 mutex_lock(&fsm->lock);
250 state = fsm->otg->phy->state;
256 VDBG("fsm->id = %d\n", fsm->id);
257 if (fsm->id)
258 otg_set_state(fsm, OTG_STATE_B_IDLE);
260 otg_set_state(fsm, OTG_STATE_A_IDLE);
263 if (!fsm->id)
264 otg_set_state(fsm, OTG_STATE_A_IDLE);
265 else if (fsm->b_sess_vld && fsm->otg->gadget)
266 otg_set_state(fsm, OTG_STATE_B_PERIPHERAL);
267 else if ((fsm->b_bus_req || fsm->adp_change || fsm->power_up) &&
268 fsm->b_ssend_srp && fsm->b_se0_srp)
269 otg_set_state(fsm, OTG_STATE_B_SRP_INIT);
272 if (!fsm->id || fsm->b_srp_done)
273 otg_set_state(fsm, OTG_STATE_B_IDLE);
276 if (!fsm->id || !fsm->b_sess_vld)
277 otg_set_state(fsm, OTG_STATE_B_IDLE);
278 else if (fsm->b_bus_req && fsm->otg->
279 gadget->b_hnp_enable && fsm->a_bus_suspend)
280 otg_set_state(fsm, OTG_STATE_B_WAIT_ACON);
283 if (fsm->a_conn)
284 otg_set_state(fsm, OTG_STATE_B_HOST);
285 else if (!fsm->id || !fsm->b_sess_vld)
286 otg_set_state(fsm, OTG_STATE_B_IDLE);
287 else if (fsm->a_bus_resume || fsm->b_ase0_brst_tmout) {
288 fsm->b_ase0_brst_tmout = 0;
289 otg_set_state(fsm, OTG_STATE_B_PERIPHERAL);
293 if (!fsm->id || !fsm->b_sess_vld)
294 otg_set_state(fsm, OTG_STATE_B_IDLE);
295 else if (!fsm->b_bus_req || !fsm->a_conn || fsm->test_device)
296 otg_set_state(fsm, OTG_STATE_B_PERIPHERAL);
299 if (fsm->id)
300 otg_set_state(fsm, OTG_STATE_B_IDLE);
301 else if (!fsm->a_bus_drop && (fsm->a_bus_req ||
302 fsm->a_srp_det || fsm->adp_change || fsm->power_up))
303 otg_set_state(fsm, OTG_STATE_A_WAIT_VRISE);
306 if (fsm->a_vbus_vld)
307 otg_set_state(fsm, OTG_STATE_A_WAIT_BCON);
308 else if (fsm->id || fsm->a_bus_drop ||
309 fsm->a_wait_vrise_tmout)
310 otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL);
313 if (!fsm->a_vbus_vld)
314 otg_set_state(fsm, OTG_STATE_A_VBUS_ERR);
315 else if (fsm->b_conn)
316 otg_set_state(fsm, OTG_STATE_A_HOST);
317 else if (fsm->id || fsm->a_bus_drop || fsm->a_wait_bcon_tmout)
318 otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL);
321 if (fsm->id || fsm->a_bus_drop)
322 otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL);
323 else if ((!fsm->a_bus_req || fsm->a_suspend_req_inf) &&
324 fsm->otg->host->b_hnp_enable)
325 otg_set_state(fsm, OTG_STATE_A_SUSPEND);
326 else if (!fsm->b_conn)
327 otg_set_state(fsm, OTG_STATE_A_WAIT_BCON);
328 else if (!fsm->a_vbus_vld)
329 otg_set_state(fsm, OTG_STATE_A_VBUS_ERR);
332 if (!fsm->b_conn && fsm->otg->host->b_hnp_enable)
333 otg_set_state(fsm, OTG_STATE_A_PERIPHERAL);
334 else if (!fsm->b_conn && !fsm->otg->host->b_hnp_enable)
335 otg_set_state(fsm, OTG_STATE_A_WAIT_BCON);
336 else if (fsm->a_bus_req || fsm->b_bus_resume)
337 otg_set_state(fsm, OTG_STATE_A_HOST);
338 else if (fsm->id || fsm->a_bus_drop || fsm->a_aidl_bdis_tmout)
339 otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL);
340 else if (!fsm->a_vbus_vld)
341 otg_set_state(fsm, OTG_STATE_A_VBUS_ERR);
344 if (fsm->id || fsm->a_bus_drop)
345 otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL);
346 else if (fsm->a_bidl_adis_tmout || fsm->b_bus_suspend)
347 otg_set_state(fsm, OTG_STATE_A_WAIT_BCON);
348 else if (!fsm->a_vbus_vld)
349 otg_set_state(fsm, OTG_STATE_A_VBUS_ERR);
352 if (fsm->a_wait_vfall_tmout)
353 otg_set_state(fsm, OTG_STATE_A_IDLE);
356 if (fsm->id || fsm->a_bus_drop || fsm->a_clr_err)
357 otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL);
362 mutex_unlock(&fsm->lock);