42 static void cosm_hw_reset(struct cosm_device *cdev, bool force)  in cosm_hw_reset()  argument
47 	if (force && cdev->hw_ops->force_reset)  in cosm_hw_reset()
48 		cdev->hw_ops->force_reset(cdev);  in cosm_hw_reset()
50 		cdev->hw_ops->reset(cdev);  in cosm_hw_reset()
53 		if (cdev->hw_ops->ready(cdev)) {  in cosm_hw_reset()
54 			cosm_set_state(cdev, MIC_READY);  in cosm_hw_reset()
64 	cosm_set_state(cdev, MIC_RESET_FAILED);  in cosm_hw_reset()
74 int cosm_start(struct cosm_device *cdev)  in cosm_start()  argument
80 	mutex_lock(&cdev->cosm_mutex);  in cosm_start()
81 	if (!cdev->bootmode) {  in cosm_start()
82 		dev_err(&cdev->dev, "%s %d bootmode not set\n",  in cosm_start()
88 	if (cdev->state != MIC_READY) {  in cosm_start()
89 		dev_err(&cdev->dev, "%s %d MIC state not READY\n",  in cosm_start()
94 	if (!cdev->hw_ops->ready(cdev)) {  in cosm_start()
95 		cosm_hw_reset(cdev, false);  in cosm_start()
109 		dev_err(&cdev->dev, "%s %d prepare_creds failed\n",  in cosm_start()
117 	rc = cdev->hw_ops->start(cdev, cdev->index);  in cosm_start()
129 	if (!strcmp(cdev->bootmode, "linux"))  in cosm_start()
130 		cosm_set_state(cdev, MIC_BOOTING);  in cosm_start()
132 		cosm_set_state(cdev, MIC_ONLINE);  in cosm_start()
134 	mutex_unlock(&cdev->cosm_mutex);  in cosm_start()
136 		dev_err(&cdev->dev, "cosm_start failed rc %d\n", rc);  in cosm_start()
147 void cosm_stop(struct cosm_device *cdev, bool force)  in cosm_stop()  argument
149 	mutex_lock(&cdev->cosm_mutex);  in cosm_stop()
150 	if (cdev->state != MIC_READY || force) {  in cosm_stop()
156 		u8 state = cdev->state == MIC_RESETTING ?  in cosm_stop()
157 					cdev->prev_state : cdev->state;  in cosm_stop()
161 		if (cdev->state != MIC_RESETTING)  in cosm_stop()
162 			cosm_set_state(cdev, MIC_RESETTING);  in cosm_stop()
163 		cdev->heartbeat_watchdog_enable = false;  in cosm_stop()
165 			cdev->hw_ops->stop(cdev, force);  in cosm_stop()
166 		cosm_hw_reset(cdev, force);  in cosm_stop()
167 		cosm_set_shutdown_status(cdev, MIC_NOP);  in cosm_stop()
168 		if (call_hw_ops && cdev->hw_ops->post_reset)  in cosm_stop()
169 			cdev->hw_ops->post_reset(cdev, cdev->state);  in cosm_stop()
171 	mutex_unlock(&cdev->cosm_mutex);  in cosm_stop()
172 	flush_work(&cdev->scif_work);  in cosm_stop()
183 	struct cosm_device *cdev = container_of(work, struct cosm_device,  in cosm_reset_trigger_work()  local
185 	cosm_stop(cdev, false);  in cosm_reset_trigger_work()
194 int cosm_reset(struct cosm_device *cdev)  in cosm_reset()  argument
198 	mutex_lock(&cdev->cosm_mutex);  in cosm_reset()
199 	if (cdev->state != MIC_READY) {  in cosm_reset()
200 		if (cdev->state != MIC_RESETTING) {  in cosm_reset()
201 			cdev->prev_state = cdev->state;  in cosm_reset()
202 			cosm_set_state(cdev, MIC_RESETTING);  in cosm_reset()
203 			schedule_work(&cdev->reset_trigger_work);  in cosm_reset()
206 		dev_err(&cdev->dev, "%s %d MIC is READY\n", __func__, __LINE__);  in cosm_reset()
209 	mutex_unlock(&cdev->cosm_mutex);  in cosm_reset()
219 int cosm_shutdown(struct cosm_device *cdev)  in cosm_shutdown()  argument
224 	mutex_lock(&cdev->cosm_mutex);  in cosm_shutdown()
225 	if (cdev->state != MIC_ONLINE) {  in cosm_shutdown()
227 		dev_err(&cdev->dev, "%s %d skipping shutdown in state: %s\n",  in cosm_shutdown()
228 			__func__, __LINE__, cosm_state_string[cdev->state]);  in cosm_shutdown()
232 	if (!cdev->epd) {  in cosm_shutdown()
234 		dev_err(&cdev->dev, "%s %d scif endpoint not connected rc %d\n",  in cosm_shutdown()
239 	rc = scif_send(cdev->epd, &msg, sizeof(msg), SCIF_SEND_BLOCK);  in cosm_shutdown()
241 		dev_err(&cdev->dev, "%s %d scif_send failed rc %d\n",  in cosm_shutdown()
245 	cdev->heartbeat_watchdog_enable = false;  in cosm_shutdown()
246 	cosm_set_state(cdev, MIC_SHUTTING_DOWN);  in cosm_shutdown()
249 	mutex_unlock(&cdev->cosm_mutex);  in cosm_shutdown()
253 static int cosm_driver_probe(struct cosm_device *cdev)  in cosm_driver_probe()  argument
263 	mutex_init(&cdev->cosm_mutex);  in cosm_driver_probe()
264 	INIT_WORK(&cdev->reset_trigger_work, cosm_reset_trigger_work);  in cosm_driver_probe()
265 	INIT_WORK(&cdev->scif_work, cosm_scif_work);  in cosm_driver_probe()
266 	cdev->sysfs_heartbeat_enable = true;  in cosm_driver_probe()
267 	cosm_sysfs_init(cdev);  in cosm_driver_probe()
268 	cdev->sdev = device_create_with_groups(g_cosm_class, cdev->dev.parent,  in cosm_driver_probe()
269 			       MKDEV(0, cdev->index), cdev, cdev->attr_group,  in cosm_driver_probe()
270 			       "mic%d", cdev->index);  in cosm_driver_probe()
271 	if (IS_ERR(cdev->sdev)) {  in cosm_driver_probe()
272 		rc = PTR_ERR(cdev->sdev);  in cosm_driver_probe()
273 		dev_err(&cdev->dev, "device_create_with_groups failed rc %d\n",  in cosm_driver_probe()
278 	cdev->state_sysfs = sysfs_get_dirent(cdev->sdev->kobj.sd,  in cosm_driver_probe()
280 	if (!cdev->state_sysfs) {  in cosm_driver_probe()
282 		dev_err(&cdev->dev, "sysfs_get_dirent failed rc %d\n", rc);  in cosm_driver_probe()
285 	cosm_create_debug_dir(cdev);  in cosm_driver_probe()
288 	device_destroy(g_cosm_class, MKDEV(0, cdev->index));  in cosm_driver_probe()
295 static void cosm_driver_remove(struct cosm_device *cdev)  in cosm_driver_remove()  argument
297 	cosm_delete_debug_dir(cdev);  in cosm_driver_remove()
298 	sysfs_put(cdev->state_sysfs);  in cosm_driver_remove()
299 	device_destroy(g_cosm_class, MKDEV(0, cdev->index));  in cosm_driver_remove()
300 	flush_work(&cdev->reset_trigger_work);  in cosm_driver_remove()
301 	cosm_stop(cdev, false);  in cosm_driver_remove()
306 	kfree(cdev->cmdline);  in cosm_driver_remove()
307 	kfree(cdev->firmware);  in cosm_driver_remove()
308 	kfree(cdev->ramdisk);  in cosm_driver_remove()
309 	kfree(cdev->bootmode);  in cosm_driver_remove()
314 	struct cosm_device *cdev = dev_to_cosm(dev);  in cosm_suspend()  local
316 	mutex_lock(&cdev->cosm_mutex);  in cosm_suspend()
317 	switch (cdev->state) {  in cosm_suspend()
327 		mutex_unlock(&cdev->cosm_mutex);  in cosm_suspend()
328 		cosm_stop(cdev, false);  in cosm_suspend()
331 		mutex_unlock(&cdev->cosm_mutex);  in cosm_suspend()