firmware/arm_scmi/scmi_power_control.c

119 	struct scmi_syspower_conf *sc = reboot_nb_to_sconf(nb);
121 	mutex_lock(&sc->state_mtx);
125 		if (sc->required_transition == SCMI_SYSTEM_SHUTDOWN)
126 			sc->state = SCMI_SYSPOWER_REBOOTING;
129 		if (sc->required_transition == SCMI_SYSTEM_COLDRESET ||
130 		    sc->required_transition == SCMI_SYSTEM_WARMRESET)
131 			sc->state = SCMI_SYSPOWER_REBOOTING;
137 	if (sc->state == SCMI_SYSPOWER_REBOOTING) {
138 		dev_dbg(sc->dev, "Reboot in progress...cancel delayed work.\n");
139 		cancel_delayed_work_sync(&sc->forceful_work);
141 	mutex_unlock(&sc->state_mtx);
148  * @sc: A reference to the configuration data
155 scmi_request_forceful_transition(struct scmi_syspower_conf *sc)
157 	dev_dbg(sc->dev, "Serving forceful request:%d\n",
158 		sc->required_transition);
163 	switch (sc->required_transition) {
178 	struct scmi_syspower_conf *sc;
185 	sc = dwork_to_sconf(dwork);
187 	dev_dbg(sc->dev, "Graceful request timed out...forcing !\n");
188 	mutex_lock(&sc->state_mtx);
190 	unregister_reboot_notifier(&sc->reboot_nb);
191 	if (sc->state == SCMI_SYSPOWER_IN_PROGRESS)
192 		scmi_request_forceful_transition(sc);
193 	mutex_unlock(&sc->state_mtx);
198  * @sc: A reference to the configuration data
210 static void scmi_request_graceful_transition(struct scmi_syspower_conf *sc,
218 		sc->reboot_nb.notifier_call = &scmi_reboot_notifier;
219 		ret = register_reboot_notifier(&sc->reboot_nb);
223 			INIT_DELAYED_WORK(&sc->forceful_work,
225 			schedule_delayed_work(&sc->forceful_work,
229 			dev_warn(sc->dev,
234 	dev_dbg(sc->dev,
236 		sc->required_transition, timeout_ms, adj_timeout_ms);
238 	switch (sc->required_transition) {
278 	struct scmi_syspower_conf *sc = userspace_nb_to_sconf(nb);
281 		dev_err(sc->dev, "Ignoring unsupported system_state: 0x%X\n",
287 		dev_err(sc->dev, "Ignoring forceful notification.\n");
297 	mutex_lock(&sc->state_mtx);
298 	if (sc->state != SCMI_SYSPOWER_IDLE) {
299 		dev_dbg(sc->dev,
301 		mutex_unlock(&sc->state_mtx);
304 	sc->state = SCMI_SYSPOWER_IN_PROGRESS;
305 	mutex_unlock(&sc->state_mtx);
307 	sc->required_transition = er->system_state;
310 	dev_info(sc->dev, "Serving shutdown/reboot request: %d\n",
311 		 sc->required_transition);
313 	scmi_request_graceful_transition(sc, er->timeout);
321 	struct scmi_syspower_conf *sc;
331 	sc = devm_kzalloc(&sdev->dev, sizeof(*sc), GFP_KERNEL);
332 	if (!sc)
335 	sc->state = SCMI_SYSPOWER_IDLE;
336 	mutex_init(&sc->state_mtx);
337 	sc->required_transition = SCMI_SYSTEM_MAX;
338 	sc->userspace_nb.notifier_call = &scmi_userspace_notifier;
339 	sc->dev = &sdev->dev;
344 						       NULL, &sc->userspace_nb);