Lines Matching refs:dev
61 * @dev: the device structure
63 void mei_cancel_work(struct mei_device *dev)
65 cancel_work_sync(&dev->init_work);
66 cancel_work_sync(&dev->reset_work);
68 cancel_delayed_work(&dev->timer_work);
75 * @dev: the device structure
79 int mei_reset(struct mei_device *dev)
81 enum mei_dev_state state = dev->dev_state;
91 mei_fw_status(dev, &fw_status);
92 dev_warn(dev->dev,
102 mei_hbm_idle(dev);
106 dev->dev_state = MEI_DEV_RESETTING;
108 dev->reset_count++;
109 if (dev->reset_count > MEI_MAX_CONSEC_RESET) {
110 dev_err(dev->dev, "reset: reached maximal consecutive resets: disabling the device\n");
111 dev->dev_state = MEI_DEV_DISABLED;
115 ret = mei_hw_reset(dev, interrupts_enabled);
123 mei_cl_all_write_clear(dev);
125 mei_cl_all_disconnect(dev);
128 mei_cl_all_wakeup(dev);
131 dev_dbg(dev->dev, "remove iamthif and wd from the file list.\n");
132 mei_cl_unlink(&dev->wd_cl);
133 mei_cl_unlink(&dev->iamthif_cl);
134 mei_amthif_reset_params(dev);
137 mei_hbm_reset(dev);
139 dev->rd_msg_hdr = 0;
140 dev->wd_pending = false;
143 dev_err(dev->dev, "hw_reset failed ret = %d\n", ret);
148 dev_dbg(dev->dev, "powering down: end of reset\n");
149 dev->dev_state = MEI_DEV_DISABLED;
153 ret = mei_hw_start(dev);
155 dev_err(dev->dev, "hw_start failed ret = %d\n", ret);
159 dev_dbg(dev->dev, "link is established start sending messages.\n");
161 dev->dev_state = MEI_DEV_INIT_CLIENTS;
162 ret = mei_hbm_start_req(dev);
164 dev_err(dev->dev, "hbm_start failed ret = %d\n", ret);
165 dev->dev_state = MEI_DEV_RESETTING;
176 * @dev: the device structure
180 int mei_start(struct mei_device *dev)
184 mutex_lock(&dev->device_lock);
187 mei_clear_interrupts(dev);
189 mei_hw_config(dev);
191 dev_dbg(dev->dev, "reset in start the mei device.\n");
193 dev->reset_count = 0;
195 dev->dev_state = MEI_DEV_INITIALIZING;
196 ret = mei_reset(dev);
198 if (ret == -ENODEV || dev->dev_state == MEI_DEV_DISABLED) {
199 dev_err(dev->dev, "reset failed ret = %d", ret);
205 if (dev->dev_state == MEI_DEV_DISABLED) {
206 dev_err(dev->dev, "reset failed");
210 if (mei_hbm_start_wait(dev)) {
211 dev_err(dev->dev, "HBM haven't started");
215 if (!mei_host_is_ready(dev)) {
216 dev_err(dev->dev, "host is not ready.\n");
220 if (!mei_hw_is_ready(dev)) {
221 dev_err(dev->dev, "ME is not ready.\n");
225 if (!mei_hbm_version_is_supported(dev)) {
226 dev_dbg(dev->dev, "MEI start failed.\n");
230 dev_dbg(dev->dev, "link layer has been established.\n");
232 mutex_unlock(&dev->device_lock);
235 dev_err(dev->dev, "link layer initialization failed.\n");
236 dev->dev_state = MEI_DEV_DISABLED;
237 mutex_unlock(&dev->device_lock);
245 * @dev: the device structure
249 int mei_restart(struct mei_device *dev)
253 mutex_lock(&dev->device_lock);
255 mei_clear_interrupts(dev);
257 dev->dev_state = MEI_DEV_POWER_UP;
258 dev->reset_count = 0;
260 err = mei_reset(dev);
262 mutex_unlock(&dev->device_lock);
264 if (err == -ENODEV || dev->dev_state == MEI_DEV_DISABLED) {
265 dev_err(dev->dev, "device disabled = %d\n", err);
271 schedule_work(&dev->reset_work);
280 struct mei_device *dev =
284 mutex_lock(&dev->device_lock);
286 ret = mei_reset(dev);
288 mutex_unlock(&dev->device_lock);
290 if (dev->dev_state == MEI_DEV_DISABLED) {
291 dev_err(dev->dev, "device disabled = %d\n", ret);
297 schedule_work(&dev->reset_work);
300 void mei_stop(struct mei_device *dev)
302 dev_dbg(dev->dev, "stopping the device.\n");
304 mei_cancel_work(dev);
306 mei_nfc_host_exit(dev);
308 mei_cl_bus_remove_devices(dev);
310 mutex_lock(&dev->device_lock);
312 mei_wd_stop(dev);
314 dev->dev_state = MEI_DEV_POWER_DOWN;
315 mei_reset(dev);
317 mutex_unlock(&dev->device_lock);
319 mei_watchdog_unregister(dev);
326 * @dev: the device structure
330 bool mei_write_is_idle(struct mei_device *dev)
332 bool idle = (dev->dev_state == MEI_DEV_ENABLED &&
333 list_empty(&dev->ctrl_wr_list.list) &&
334 list_empty(&dev->write_list.list));
336 dev_dbg(dev->dev, "write pg: is idle[%d] state=%s ctrl=%d write=%d\n",
338 mei_dev_state_str(dev->dev_state),
339 list_empty(&dev->ctrl_wr_list.list),
340 list_empty(&dev->write_list.list));
349 * @dev: the mei device
353 void mei_device_init(struct mei_device *dev,
358 INIT_LIST_HEAD(&dev->file_list);
359 INIT_LIST_HEAD(&dev->device_list);
360 INIT_LIST_HEAD(&dev->me_clients);
361 mutex_init(&dev->device_lock);
362 init_waitqueue_head(&dev->wait_hw_ready);
363 init_waitqueue_head(&dev->wait_pg);
364 init_waitqueue_head(&dev->wait_hbm_start);
365 init_waitqueue_head(&dev->wait_stop_wd);
366 dev->dev_state = MEI_DEV_INITIALIZING;
367 dev->reset_count = 0;
369 mei_io_list_init(&dev->read_list);
370 mei_io_list_init(&dev->write_list);
371 mei_io_list_init(&dev->write_waiting_list);
372 mei_io_list_init(&dev->ctrl_wr_list);
373 mei_io_list_init(&dev->ctrl_rd_list);
375 INIT_DELAYED_WORK(&dev->timer_work, mei_timer);
376 INIT_WORK(&dev->init_work, mei_host_client_init);
377 INIT_WORK(&dev->reset_work, mei_reset_work);
379 INIT_LIST_HEAD(&dev->wd_cl.link);
380 INIT_LIST_HEAD(&dev->iamthif_cl.link);
381 mei_io_list_init(&dev->amthif_cmd_list);
382 mei_io_list_init(&dev->amthif_rd_complete_list);
384 bitmap_zero(dev->host_clients_map, MEI_CLIENTS_MAX);
385 dev->open_handle_count = 0;
391 bitmap_set(dev->host_clients_map, 0, 1);
393 dev->pg_event = MEI_PG_EVENT_IDLE;
394 dev->ops = hw_ops;
395 dev->dev = device;