3  * Greybus CPort control protocol.
14 /* Highest control-protocol version supported */
18 static int gb_control_get_version(struct gb_control *control)  in gb_control_get_version()  argument
20 	struct gb_interface *intf = control->connection->intf;  in gb_control_get_version()
28 	ret = gb_operation_sync(control->connection,  in gb_control_get_version()
34 			"failed to get control-protocol version: %d\n",  in gb_control_get_version()
41 			"unsupported major control-protocol version (%u > %u)\n",  in gb_control_get_version()
46 	control->protocol_major = response.major;  in gb_control_get_version()
47 	control->protocol_minor = response.minor;  in gb_control_get_version()
55 static int gb_control_get_bundle_version(struct gb_control *control,  in gb_control_get_bundle_version()  argument
58 	struct gb_interface *intf = control->connection->intf;  in gb_control_get_bundle_version()
65 	ret = gb_operation_sync(control->connection,  in gb_control_get_bundle_version()
85 int gb_control_get_bundle_versions(struct gb_control *control)  in gb_control_get_bundle_versions()  argument
87 	struct gb_interface *intf = control->connection->intf;  in gb_control_get_bundle_versions()
91 	if (!control->has_bundle_version)  in gb_control_get_bundle_versions()
95 		ret = gb_control_get_bundle_version(control, bundle);  in gb_control_get_bundle_versions()
107 	struct gb_connection *connection = intf->control->connection;  in gb_control_get_manifest_size_operation()
125 	struct gb_connection *connection = intf->control->connection;  in gb_control_get_manifest_operation()
131 int gb_control_connected_operation(struct gb_control *control, u16 cport_id)  in gb_control_connected_operation()  argument
136 	return gb_operation_sync(control->connection, GB_CONTROL_TYPE_CONNECTED,  in gb_control_connected_operation()
140 int gb_control_disconnected_operation(struct gb_control *control, u16 cport_id)  in gb_control_disconnected_operation()  argument
145 	return gb_operation_sync(control->connection,  in gb_control_disconnected_operation()
150 int gb_control_disconnecting_operation(struct gb_control *control,  in gb_control_disconnecting_operation()  argument
157 	operation = gb_operation_create_core(control->connection,  in gb_control_disconnecting_operation()
169 		dev_err(&control->dev, "failed to send disconnecting: %d\n",  in gb_control_disconnecting_operation()
178 int gb_control_mode_switch_operation(struct gb_control *control)  in gb_control_mode_switch_operation()  argument
183 	operation = gb_operation_create_core(control->connection,  in gb_control_mode_switch_operation()
193 		dev_err(&control->dev, "failed to send mode switch: %d\n", ret);  in gb_control_mode_switch_operation()
215 int gb_control_bundle_suspend(struct gb_control *control, u8 bundle_id)  in gb_control_bundle_suspend()  argument
222 	ret = gb_operation_sync(control->connection,  in gb_control_bundle_suspend()
226 		dev_err(&control->dev, "failed to send bundle %u suspend: %d\n",  in gb_control_bundle_suspend()
232 		dev_err(&control->dev, "failed to suspend bundle %u: %d\n",  in gb_control_bundle_suspend()
240 int gb_control_bundle_resume(struct gb_control *control, u8 bundle_id)  in gb_control_bundle_resume()  argument
247 	ret = gb_operation_sync(control->connection,  in gb_control_bundle_resume()
251 		dev_err(&control->dev, "failed to send bundle %u resume: %d\n",  in gb_control_bundle_resume()
257 		dev_err(&control->dev, "failed to resume bundle %u: %d\n",  in gb_control_bundle_resume()
265 int gb_control_bundle_deactivate(struct gb_control *control, u8 bundle_id)  in gb_control_bundle_deactivate()  argument
272 	ret = gb_operation_sync(control->connection,  in gb_control_bundle_deactivate()
276 		dev_err(&control->dev,  in gb_control_bundle_deactivate()
283 		dev_err(&control->dev, "failed to deactivate bundle %u: %d\n",  in gb_control_bundle_deactivate()
291 int gb_control_bundle_activate(struct gb_control *control, u8 bundle_id)  in gb_control_bundle_activate()  argument
297 	if (!control->has_bundle_activate)  in gb_control_bundle_activate()
301 	ret = gb_operation_sync(control->connection,  in gb_control_bundle_activate()
305 		dev_err(&control->dev,  in gb_control_bundle_activate()
312 		dev_err(&control->dev, "failed to activate bundle %u: %d\n",  in gb_control_bundle_activate()
332 int gb_control_interface_suspend_prepare(struct gb_control *control)  in gb_control_interface_suspend_prepare()  argument
337 	ret = gb_operation_sync(control->connection,  in gb_control_interface_suspend_prepare()
341 		dev_err(&control->dev,  in gb_control_interface_suspend_prepare()
347 		dev_err(&control->dev, "interface error while preparing suspend: %d\n",  in gb_control_interface_suspend_prepare()
355 int gb_control_interface_deactivate_prepare(struct gb_control *control)  in gb_control_interface_deactivate_prepare()  argument
360 	ret = gb_operation_sync(control->connection,  in gb_control_interface_deactivate_prepare()
364 		dev_err(&control->dev, "failed to send interface deactivate prepare: %d\n",  in gb_control_interface_deactivate_prepare()
370 		dev_err(&control->dev, "interface error while preparing deactivate: %d\n",  in gb_control_interface_deactivate_prepare()
378 int gb_control_interface_hibernate_abort(struct gb_control *control)  in gb_control_interface_hibernate_abort()  argument
383 	ret = gb_operation_sync(control->connection,  in gb_control_interface_hibernate_abort()
387 		dev_err(&control->dev,  in gb_control_interface_hibernate_abort()
394 		dev_err(&control->dev, "interface error while aborting hibernate: %d\n",  in gb_control_interface_hibernate_abort()
405 	struct gb_control *control = to_gb_control(dev);  in vendor_string_show()  local
407 	return scnprintf(buf, PAGE_SIZE, "%s\n", control->vendor_string);  in vendor_string_show()
414 	struct gb_control *control = to_gb_control(dev);  in product_string_show()  local
416 	return scnprintf(buf, PAGE_SIZE, "%s\n", control->product_string);  in product_string_show()
425 ATTRIBUTE_GROUPS(control);
429 	struct gb_control *control = to_gb_control(dev);  in gb_control_release()  local
431 	gb_connection_destroy(control->connection);  in gb_control_release()
433 	kfree(control->vendor_string);  in gb_control_release()
434 	kfree(control->product_string);  in gb_control_release()
436 	kfree(control);  in gb_control_release()
447 	struct gb_control *control;  in gb_control_create()  local
449 	control = kzalloc(sizeof(*control), GFP_KERNEL);  in gb_control_create()
450 	if (!control)  in gb_control_create()
453 	control->intf = intf;  in gb_control_create()
458 			"failed to create control connection: %ld\n",  in gb_control_create()
460 		kfree(control);  in gb_control_create()
464 	control->connection = connection;  in gb_control_create()
466 	control->dev.parent = &intf->dev;  in gb_control_create()
467 	control->dev.bus = &greybus_bus_type;  in gb_control_create()
468 	control->dev.type = &greybus_control_type;  in gb_control_create()
469 	control->dev.groups = control_groups;  in gb_control_create()
470 	control->dev.dma_mask = intf->dev.dma_mask;  in gb_control_create()
471 	device_initialize(&control->dev);  in gb_control_create()
472 	dev_set_name(&control->dev, "%s.ctrl", dev_name(&intf->dev));  in gb_control_create()
474 	gb_connection_set_data(control->connection, control);  in gb_control_create()
476 	return control;  in gb_control_create()
479 int gb_control_enable(struct gb_control *control)  in gb_control_enable()  argument
483 	dev_dbg(&control->connection->intf->dev, "%s\n", __func__);  in gb_control_enable()
485 	ret = gb_connection_enable_tx(control->connection);  in gb_control_enable()
487 		dev_err(&control->connection->intf->dev,  in gb_control_enable()
488 			"failed to enable control connection: %d\n",  in gb_control_enable()
493 	ret = gb_control_get_version(control);  in gb_control_enable()
497 	if (control->protocol_major > 0 || control->protocol_minor > 1)  in gb_control_enable()
498 		control->has_bundle_version = true;  in gb_control_enable()
501 	if (!(control->intf->quirks & GB_INTERFACE_QUIRK_NO_BUNDLE_ACTIVATE))  in gb_control_enable()
502 		control->has_bundle_activate = true;  in gb_control_enable()
507 	gb_connection_disable(control->connection);  in gb_control_enable()
512 void gb_control_disable(struct gb_control *control)  in gb_control_disable()  argument
514 	dev_dbg(&control->connection->intf->dev, "%s\n", __func__);  in gb_control_disable()
516 	if (control->intf->disconnected)  in gb_control_disable()
517 		gb_connection_disable_forced(control->connection);  in gb_control_disable()
519 		gb_connection_disable(control->connection);  in gb_control_disable()
522 int gb_control_suspend(struct gb_control *control)  in gb_control_suspend()  argument
524 	gb_connection_disable(control->connection);  in gb_control_suspend()
529 int gb_control_resume(struct gb_control *control)  in gb_control_resume()  argument
533 	ret = gb_connection_enable_tx(control->connection);  in gb_control_resume()
535 		dev_err(&control->connection->intf->dev,  in gb_control_resume()
536 			"failed to enable control connection: %d\n", ret);  in gb_control_resume()
543 int gb_control_add(struct gb_control *control)  in gb_control_add()  argument
547 	ret = device_add(&control->dev);  in gb_control_add()
549 		dev_err(&control->dev,  in gb_control_add()
550 			"failed to register control device: %d\n",  in gb_control_add()
558 void gb_control_del(struct gb_control *control)  in gb_control_del()  argument
560 	if (device_is_registered(&control->dev))  in gb_control_del()
561 		device_del(&control->dev);  in gb_control_del()
564 struct gb_control *gb_control_get(struct gb_control *control)  in gb_control_get()  argument
566 	get_device(&control->dev);  in gb_control_get()
568 	return control;  in gb_control_get()
571 void gb_control_put(struct gb_control *control)  in gb_control_put()  argument
573 	put_device(&control->dev);  in gb_control_put()
576 void gb_control_mode_switch_prepare(struct gb_control *control)  in gb_control_mode_switch_prepare()  argument
578 	gb_connection_mode_switch_prepare(control->connection);  in gb_control_mode_switch_prepare()
581 void gb_control_mode_switch_complete(struct gb_control *control)  in gb_control_mode_switch_complete()  argument
583 	gb_connection_mode_switch_complete(control->connection);  in gb_control_mode_switch_complete()