42 static void mei_wd_set_start_timeout(struct mei_device *dev, u16 timeout)  in mei_wd_set_start_timeout()  argument
44 	dev_dbg(dev->dev, "wd: set timeout=%d.\n", timeout);  in mei_wd_set_start_timeout()
45 	memcpy(dev->wd_data, mei_start_wd_params, MEI_WD_HDR_SIZE);  in mei_wd_set_start_timeout()
46 	memcpy(dev->wd_data + MEI_WD_HDR_SIZE, &timeout, sizeof(u16));  in mei_wd_set_start_timeout()
59 int mei_wd_host_init(struct mei_device *dev, struct mei_me_client *me_cl)  in mei_wd_host_init()  argument
61 	struct mei_cl *cl = &dev->wd_cl;  in mei_wd_host_init()
64 	mei_cl_init(cl, dev);  in mei_wd_host_init()
66 	dev->wd_timeout = MEI_WD_DEFAULT_TIMEOUT;  in mei_wd_host_init()
67 	dev->wd_state = MEI_WD_IDLE;  in mei_wd_host_init()
71 		dev_info(dev->dev, "wd: failed link client\n");  in mei_wd_host_init()
77 		dev_err(dev->dev, "wd: failed to connect = %d\n", ret);  in mei_wd_host_init()
82 	ret = mei_watchdog_register(dev);  in mei_wd_host_init()
100 int mei_wd_send(struct mei_device *dev)  in mei_wd_send()  argument
102 	struct mei_cl *cl = &dev->wd_cl;  in mei_wd_send()
112 	if (!memcmp(dev->wd_data, mei_start_wd_params, MEI_WD_HDR_SIZE))  in mei_wd_send()
114 	else if (!memcmp(dev->wd_data, mei_stop_wd_params, MEI_WD_HDR_SIZE))  in mei_wd_send()
117 		dev_err(dev->dev, "wd: invalid message is to be sent, aborting\n");  in mei_wd_send()
121 	ret = mei_write_message(dev, &hdr, dev->wd_data);  in mei_wd_send()
123 		dev_err(dev->dev, "wd: write message failed\n");  in mei_wd_send()
129 		dev_err(dev->dev, "wd: flow_ctrl_reduce failed.\n");  in mei_wd_send()
147 int mei_wd_stop(struct mei_device *dev)  in mei_wd_stop()  argument
149 	struct mei_cl *cl = &dev->wd_cl;  in mei_wd_stop()
153 	    dev->wd_state != MEI_WD_RUNNING)  in mei_wd_stop()
156 	memcpy(dev->wd_data, mei_stop_wd_params, MEI_WD_STOP_MSG_SIZE);  in mei_wd_stop()
158 	dev->wd_state = MEI_WD_STOPPING;  in mei_wd_stop()
164 	if (ret && mei_hbuf_acquire(dev)) {  in mei_wd_stop()
165 		ret = mei_wd_send(dev);  in mei_wd_stop()
168 		dev->wd_pending = false;  in mei_wd_stop()
170 		dev->wd_pending = true;  in mei_wd_stop()
173 	mutex_unlock(&dev->device_lock);  in mei_wd_stop()
175 	ret = wait_event_timeout(dev->wait_stop_wd,  in mei_wd_stop()
176 				dev->wd_state == MEI_WD_IDLE,  in mei_wd_stop()
178 	mutex_lock(&dev->device_lock);  in mei_wd_stop()
179 	if (dev->wd_state != MEI_WD_IDLE) {  in mei_wd_stop()
182 		dev_warn(dev->dev, "wd: stop failed to complete ret=%d\n", ret);  in mei_wd_stop()
185 	dev_dbg(dev->dev, "wd: stop completed after %u msec\n",  in mei_wd_stop()
201 	struct mei_device *dev;  in mei_wd_ops_start()  local
205 	dev = watchdog_get_drvdata(wd_dev);  in mei_wd_ops_start()
206 	if (!dev)  in mei_wd_ops_start()
209 	cl = &dev->wd_cl;  in mei_wd_ops_start()
211 	mutex_lock(&dev->device_lock);  in mei_wd_ops_start()
213 	if (dev->dev_state != MEI_DEV_ENABLED) {  in mei_wd_ops_start()
214 		dev_dbg(dev->dev, "wd: dev_state != MEI_DEV_ENABLED  dev_state = %s\n",  in mei_wd_ops_start()
215 			mei_dev_state_str(dev->dev_state));  in mei_wd_ops_start()
220 		cl_dbg(dev, cl, "MEI Driver is not connected to Watchdog Client\n");  in mei_wd_ops_start()
224 	mei_wd_set_start_timeout(dev, dev->wd_timeout);  in mei_wd_ops_start()
228 	mutex_unlock(&dev->device_lock);  in mei_wd_ops_start()
241 	struct mei_device *dev;  in mei_wd_ops_stop()  local
243 	dev = watchdog_get_drvdata(wd_dev);  in mei_wd_ops_stop()
244 	if (!dev)  in mei_wd_ops_stop()
247 	mutex_lock(&dev->device_lock);  in mei_wd_ops_stop()
248 	mei_wd_stop(dev);  in mei_wd_ops_stop()
249 	mutex_unlock(&dev->device_lock);  in mei_wd_ops_stop()
263 	struct mei_device *dev;  in mei_wd_ops_ping()  local
267 	dev = watchdog_get_drvdata(wd_dev);  in mei_wd_ops_ping()
268 	if (!dev)  in mei_wd_ops_ping()
271 	cl = &dev->wd_cl;  in mei_wd_ops_ping()
273 	mutex_lock(&dev->device_lock);  in mei_wd_ops_ping()
276 		cl_err(dev, cl, "wd: not connected.\n");  in mei_wd_ops_ping()
281 	dev->wd_state = MEI_WD_RUNNING;  in mei_wd_ops_ping()
288 	if (ret && mei_hbuf_acquire(dev)) {  in mei_wd_ops_ping()
289 		dev_dbg(dev->dev, "wd: sending ping\n");  in mei_wd_ops_ping()
291 		ret = mei_wd_send(dev);  in mei_wd_ops_ping()
294 		dev->wd_pending = false;  in mei_wd_ops_ping()
296 		dev->wd_pending = true;  in mei_wd_ops_ping()
300 	mutex_unlock(&dev->device_lock);  in mei_wd_ops_ping()
315 	struct mei_device *dev;  in mei_wd_ops_set_timeout()  local
317 	dev = watchdog_get_drvdata(wd_dev);  in mei_wd_ops_set_timeout()
318 	if (!dev)  in mei_wd_ops_set_timeout()
325 	mutex_lock(&dev->device_lock);  in mei_wd_ops_set_timeout()
327 	dev->wd_timeout = timeout;  in mei_wd_ops_set_timeout()
329 	mei_wd_set_start_timeout(dev, dev->wd_timeout);  in mei_wd_ops_set_timeout()
331 	mutex_unlock(&dev->device_lock);  in mei_wd_ops_set_timeout()
362 int mei_watchdog_register(struct mei_device *dev)  in mei_watchdog_register()  argument
367 	amt_wd_dev.parent = dev->dev;  in mei_watchdog_register()
369 	mutex_unlock(&dev->device_lock);  in mei_watchdog_register()
371 	mutex_lock(&dev->device_lock);  in mei_watchdog_register()
373 		dev_err(dev->dev, "wd: unable to register watchdog device = %d.\n",  in mei_watchdog_register()
378 	dev_dbg(dev->dev, "wd: successfully register watchdog interface.\n");  in mei_watchdog_register()
379 	watchdog_set_drvdata(&amt_wd_dev, dev);  in mei_watchdog_register()
383 void mei_watchdog_unregister(struct mei_device *dev)  in mei_watchdog_unregister()  argument