30 static void cosm_hw_reset(struct cosm_device *cdev, bool force)  in cosm_hw_reset()  argument
35 	if (force && cdev->hw_ops->force_reset)  in cosm_hw_reset()
36 		cdev->hw_ops->force_reset(cdev);  in cosm_hw_reset()
38 		cdev->hw_ops->reset(cdev);  in cosm_hw_reset()
41 		if (cdev->hw_ops->ready(cdev)) {  in cosm_hw_reset()
42 			cosm_set_state(cdev, MIC_READY);  in cosm_hw_reset()
52 	cosm_set_state(cdev, MIC_RESET_FAILED);  in cosm_hw_reset()
62 int cosm_start(struct cosm_device *cdev)  in cosm_start()  argument
68 	mutex_lock(&cdev->cosm_mutex);  in cosm_start()
69 	if (!cdev->bootmode) {  in cosm_start()
70 		dev_err(&cdev->dev, "%s %d bootmode not set\n",  in cosm_start()
76 	if (cdev->state != MIC_READY) {  in cosm_start()
77 		dev_err(&cdev->dev, "%s %d MIC state not READY\n",  in cosm_start()
82 	if (!cdev->hw_ops->ready(cdev)) {  in cosm_start()
83 		cosm_hw_reset(cdev, false);  in cosm_start()
97 		dev_err(&cdev->dev, "%s %d prepare_creds failed\n",  in cosm_start()
105 	rc = cdev->hw_ops->start(cdev, cdev->index);  in cosm_start()
117 	if (!strcmp(cdev->bootmode, "linux"))  in cosm_start()
118 		cosm_set_state(cdev, MIC_BOOTING);  in cosm_start()
120 		cosm_set_state(cdev, MIC_ONLINE);  in cosm_start()
122 	mutex_unlock(&cdev->cosm_mutex);  in cosm_start()
124 		dev_err(&cdev->dev, "cosm_start failed rc %d\n", rc);  in cosm_start()
135 void cosm_stop(struct cosm_device *cdev, bool force)  in cosm_stop()  argument
137 	mutex_lock(&cdev->cosm_mutex);  in cosm_stop()
138 	if (cdev->state != MIC_READY || force) {  in cosm_stop()
144 		u8 state = cdev->state == MIC_RESETTING ?  in cosm_stop()
145 					cdev->prev_state : cdev->state;  in cosm_stop()
149 		if (cdev->state != MIC_RESETTING)  in cosm_stop()
150 			cosm_set_state(cdev, MIC_RESETTING);  in cosm_stop()
151 		cdev->heartbeat_watchdog_enable = false;  in cosm_stop()
153 			cdev->hw_ops->stop(cdev, force);  in cosm_stop()
154 		cosm_hw_reset(cdev, force);  in cosm_stop()
155 		cosm_set_shutdown_status(cdev, MIC_NOP);  in cosm_stop()
156 		if (call_hw_ops && cdev->hw_ops->post_reset)  in cosm_stop()
157 			cdev->hw_ops->post_reset(cdev, cdev->state);  in cosm_stop()
159 	mutex_unlock(&cdev->cosm_mutex);  in cosm_stop()
160 	flush_work(&cdev->scif_work);  in cosm_stop()
171 	struct cosm_device *cdev = container_of(work, struct cosm_device,  in cosm_reset_trigger_work()  local
173 	cosm_stop(cdev, false);  in cosm_reset_trigger_work()
182 int cosm_reset(struct cosm_device *cdev)  in cosm_reset()  argument
186 	mutex_lock(&cdev->cosm_mutex);  in cosm_reset()
187 	if (cdev->state != MIC_READY) {  in cosm_reset()
188 		if (cdev->state != MIC_RESETTING) {  in cosm_reset()
189 			cdev->prev_state = cdev->state;  in cosm_reset()
190 			cosm_set_state(cdev, MIC_RESETTING);  in cosm_reset()
191 			schedule_work(&cdev->reset_trigger_work);  in cosm_reset()
194 		dev_err(&cdev->dev, "%s %d MIC is READY\n", __func__, __LINE__);  in cosm_reset()
197 	mutex_unlock(&cdev->cosm_mutex);  in cosm_reset()
207 int cosm_shutdown(struct cosm_device *cdev)  in cosm_shutdown()  argument
212 	mutex_lock(&cdev->cosm_mutex);  in cosm_shutdown()
213 	if (cdev->state != MIC_ONLINE) {  in cosm_shutdown()
215 		dev_err(&cdev->dev, "%s %d skipping shutdown in state: %s\n",  in cosm_shutdown()
216 			__func__, __LINE__, cosm_state_string[cdev->state]);  in cosm_shutdown()
220 	if (!cdev->epd) {  in cosm_shutdown()
222 		dev_err(&cdev->dev, "%s %d scif endpoint not connected rc %d\n",  in cosm_shutdown()
227 	rc = scif_send(cdev->epd, &msg, sizeof(msg), SCIF_SEND_BLOCK);  in cosm_shutdown()
229 		dev_err(&cdev->dev, "%s %d scif_send failed rc %d\n",  in cosm_shutdown()
233 	cdev->heartbeat_watchdog_enable = false;  in cosm_shutdown()
234 	cosm_set_state(cdev, MIC_SHUTTING_DOWN);  in cosm_shutdown()
237 	mutex_unlock(&cdev->cosm_mutex);  in cosm_shutdown()
241 static int cosm_driver_probe(struct cosm_device *cdev)  in cosm_driver_probe()  argument
251 	mutex_init(&cdev->cosm_mutex);  in cosm_driver_probe()
252 	INIT_WORK(&cdev->reset_trigger_work, cosm_reset_trigger_work);  in cosm_driver_probe()
253 	INIT_WORK(&cdev->scif_work, cosm_scif_work);  in cosm_driver_probe()
254 	cdev->sysfs_heartbeat_enable = true;  in cosm_driver_probe()
255 	cosm_sysfs_init(cdev);  in cosm_driver_probe()
256 	cdev->sdev = device_create_with_groups(g_cosm_class, cdev->dev.parent,  in cosm_driver_probe()
257 			       MKDEV(0, cdev->index), cdev, cdev->attr_group,  in cosm_driver_probe()
258 			       "mic%d", cdev->index);  in cosm_driver_probe()
259 	if (IS_ERR(cdev->sdev)) {  in cosm_driver_probe()
260 		rc = PTR_ERR(cdev->sdev);  in cosm_driver_probe()
261 		dev_err(&cdev->dev, "device_create_with_groups failed rc %d\n",  in cosm_driver_probe()
266 	cdev->state_sysfs = sysfs_get_dirent(cdev->sdev->kobj.sd,  in cosm_driver_probe()
268 	if (!cdev->state_sysfs) {  in cosm_driver_probe()
270 		dev_err(&cdev->dev, "sysfs_get_dirent failed rc %d\n", rc);  in cosm_driver_probe()
273 	cosm_create_debug_dir(cdev);  in cosm_driver_probe()
276 	device_destroy(g_cosm_class, MKDEV(0, cdev->index));  in cosm_driver_probe()
283 static void cosm_driver_remove(struct cosm_device *cdev)  in cosm_driver_remove()  argument
285 	cosm_delete_debug_dir(cdev);  in cosm_driver_remove()
286 	sysfs_put(cdev->state_sysfs);  in cosm_driver_remove()
287 	device_destroy(g_cosm_class, MKDEV(0, cdev->index));  in cosm_driver_remove()
288 	flush_work(&cdev->reset_trigger_work);  in cosm_driver_remove()
289 	cosm_stop(cdev, false);  in cosm_driver_remove()
294 	kfree(cdev->cmdline);  in cosm_driver_remove()
295 	kfree(cdev->firmware);  in cosm_driver_remove()
296 	kfree(cdev->ramdisk);  in cosm_driver_remove()
297 	kfree(cdev->bootmode);  in cosm_driver_remove()
302 	struct cosm_device *cdev = dev_to_cosm(dev);  in cosm_suspend()  local
304 	mutex_lock(&cdev->cosm_mutex);  in cosm_suspend()
305 	switch (cdev->state) {  in cosm_suspend()
315 		mutex_unlock(&cdev->cosm_mutex);  in cosm_suspend()
316 		cosm_stop(cdev, false);  in cosm_suspend()
319 		mutex_unlock(&cdev->cosm_mutex);  in cosm_suspend()