36 	struct cros_ec_device *ec_dev = data;  in ec_irq_thread()  local
40 	ret = cros_ec_get_next_event(ec_dev, &wake_event);  in ec_irq_thread()
47 	if (wake_event && device_may_wakeup(ec_dev->dev))  in ec_irq_thread()
48 		pm_wakeup_event(ec_dev->dev, 0);  in ec_irq_thread()
51 		blocking_notifier_call_chain(&ec_dev->event_notifier,  in ec_irq_thread()
52 					     0, ec_dev);  in ec_irq_thread()
56 static int cros_ec_sleep_event(struct cros_ec_device *ec_dev, u8 sleep_event)  in cros_ec_sleep_event()  argument
70 	if (ec_dev->host_sleep_v1) {  in cros_ec_sleep_event()
89 	ret = cros_ec_cmd_xfer(ec_dev, &buf.msg);  in cros_ec_sleep_event()
92 	if (ret >= 0 && ec_dev->host_sleep_v1 &&  in cros_ec_sleep_event()
94 		ec_dev->last_resume_result =  in cros_ec_sleep_event()
107 int cros_ec_register(struct cros_ec_device *ec_dev)  in cros_ec_register()  argument
109 	struct device *dev = ec_dev->dev;  in cros_ec_register()
112 	BLOCKING_INIT_NOTIFIER_HEAD(&ec_dev->event_notifier);  in cros_ec_register()
114 	ec_dev->max_request = sizeof(struct ec_params_hello);  in cros_ec_register()
115 	ec_dev->max_response = sizeof(struct ec_response_get_protocol_info);  in cros_ec_register()
116 	ec_dev->max_passthru = 0;  in cros_ec_register()
118 	ec_dev->din = devm_kzalloc(dev, ec_dev->din_size, GFP_KERNEL);  in cros_ec_register()
119 	if (!ec_dev->din)  in cros_ec_register()
122 	ec_dev->dout = devm_kzalloc(dev, ec_dev->dout_size, GFP_KERNEL);  in cros_ec_register()
123 	if (!ec_dev->dout)  in cros_ec_register()
126 	mutex_init(&ec_dev->lock);  in cros_ec_register()
128 	err = cros_ec_query_all(ec_dev);  in cros_ec_register()
134 	if (ec_dev->irq) {  in cros_ec_register()
135 		err = devm_request_threaded_irq(dev, ec_dev->irq, NULL,  in cros_ec_register()
137 				"chromeos-ec", ec_dev);  in cros_ec_register()
140 				ec_dev->irq, err);  in cros_ec_register()
146 	ec_dev->ec = platform_device_register_data(ec_dev->dev, "cros-ec-dev",  in cros_ec_register()
149 	if (IS_ERR(ec_dev->ec)) {  in cros_ec_register()
150 		dev_err(ec_dev->dev,  in cros_ec_register()
152 		return PTR_ERR(ec_dev->ec);  in cros_ec_register()
155 	if (ec_dev->max_passthru) {  in cros_ec_register()
164 		ec_dev->pd = platform_device_register_data(ec_dev->dev,  in cros_ec_register()
168 		if (IS_ERR(ec_dev->pd)) {  in cros_ec_register()
169 			dev_err(ec_dev->dev,  in cros_ec_register()
171 			platform_device_unregister(ec_dev->ec);  in cros_ec_register()
172 			return PTR_ERR(ec_dev->pd);  in cros_ec_register()
179 			platform_device_unregister(ec_dev->pd);  in cros_ec_register()
180 			platform_device_unregister(ec_dev->ec);  in cros_ec_register()
190 	err = cros_ec_sleep_event(ec_dev, 0);  in cros_ec_register()
192 		dev_dbg(ec_dev->dev, "Error %d clearing sleep event to ec",  in cros_ec_register()
201 int cros_ec_unregister(struct cros_ec_device *ec_dev)  in cros_ec_unregister()  argument
203 	if (ec_dev->pd)  in cros_ec_unregister()
204 		platform_device_unregister(ec_dev->pd);  in cros_ec_unregister()
205 	platform_device_unregister(ec_dev->ec);  in cros_ec_unregister()
212 int cros_ec_suspend(struct cros_ec_device *ec_dev)  in cros_ec_suspend()  argument
214 	struct device *dev = ec_dev->dev;  in cros_ec_suspend()
222 	ret = cros_ec_sleep_event(ec_dev, sleep_event);  in cros_ec_suspend()
224 		dev_dbg(ec_dev->dev, "Error %d sending suspend event to ec",  in cros_ec_suspend()
228 		ec_dev->wake_enabled = !enable_irq_wake(ec_dev->irq);  in cros_ec_suspend()
230 	disable_irq(ec_dev->irq);  in cros_ec_suspend()
231 	ec_dev->was_wake_device = ec_dev->wake_enabled;  in cros_ec_suspend()
232 	ec_dev->suspended = true;  in cros_ec_suspend()
238 static void cros_ec_report_events_during_suspend(struct cros_ec_device *ec_dev)  in cros_ec_report_events_during_suspend()  argument
240 	while (ec_dev->mkbp_event_supported &&  in cros_ec_report_events_during_suspend()
241 	       cros_ec_get_next_event(ec_dev, NULL) > 0)  in cros_ec_report_events_during_suspend()
242 		blocking_notifier_call_chain(&ec_dev->event_notifier,  in cros_ec_report_events_during_suspend()
243 					     1, ec_dev);  in cros_ec_report_events_during_suspend()
246 int cros_ec_resume(struct cros_ec_device *ec_dev)  in cros_ec_resume()  argument
251 	ec_dev->suspended = false;  in cros_ec_resume()
252 	enable_irq(ec_dev->irq);  in cros_ec_resume()
258 	ret = cros_ec_sleep_event(ec_dev, sleep_event);  in cros_ec_resume()
260 		dev_dbg(ec_dev->dev, "Error %d sending resume event to ec",  in cros_ec_resume()
263 	if (ec_dev->wake_enabled) {  in cros_ec_resume()
264 		disable_irq_wake(ec_dev->irq);  in cros_ec_resume()
265 		ec_dev->wake_enabled = 0;  in cros_ec_resume()
271 	cros_ec_report_events_during_suspend(ec_dev);  in cros_ec_resume()