514 static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev);
530 	struct dj_receiver_dev *djrcv_dev;  in dj_find_receiver_dev()  local
540 	list_for_each_entry(djrcv_dev, &dj_hdev_list, list) {  in dj_find_receiver_dev()
541 		if (djrcv_dev->mouse &&  in dj_find_receiver_dev()
542 		    hid_compare_device_paths(hdev, djrcv_dev->mouse, sep)) {  in dj_find_receiver_dev()
543 			kref_get(&djrcv_dev->kref);  in dj_find_receiver_dev()
544 			return djrcv_dev;  in dj_find_receiver_dev()
546 		if (djrcv_dev->keyboard &&  in dj_find_receiver_dev()
547 		    hid_compare_device_paths(hdev, djrcv_dev->keyboard, sep)) {  in dj_find_receiver_dev()
548 			kref_get(&djrcv_dev->kref);  in dj_find_receiver_dev()
549 			return djrcv_dev;  in dj_find_receiver_dev()
551 		if (djrcv_dev->hidpp &&  in dj_find_receiver_dev()
552 		    hid_compare_device_paths(hdev, djrcv_dev->hidpp, sep)) {  in dj_find_receiver_dev()
553 			kref_get(&djrcv_dev->kref);  in dj_find_receiver_dev()
554 			return djrcv_dev;  in dj_find_receiver_dev()
563 	struct dj_receiver_dev *djrcv_dev = container_of(kref, struct dj_receiver_dev, kref);  in dj_release_receiver_dev()  local
565 	list_del(&djrcv_dev->list);  in dj_release_receiver_dev()
566 	kfifo_free(&djrcv_dev->notif_fifo);  in dj_release_receiver_dev()
567 	kfree(djrcv_dev);  in dj_release_receiver_dev()
572 	struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);  in dj_put_receiver_dev()  local
576 	if (djrcv_dev->mouse == hdev)  in dj_put_receiver_dev()
577 		djrcv_dev->mouse = NULL;  in dj_put_receiver_dev()
578 	if (djrcv_dev->keyboard == hdev)  in dj_put_receiver_dev()
579 		djrcv_dev->keyboard = NULL;  in dj_put_receiver_dev()
580 	if (djrcv_dev->hidpp == hdev)  in dj_put_receiver_dev()
581 		djrcv_dev->hidpp = NULL;  in dj_put_receiver_dev()
583 	kref_put(&djrcv_dev->kref, dj_release_receiver_dev);  in dj_put_receiver_dev()
593 	struct dj_receiver_dev *djrcv_dev;  in dj_get_receiver_dev()  local
597 	djrcv_dev = dj_find_receiver_dev(hdev, type);  in dj_get_receiver_dev()
598 	if (!djrcv_dev) {  in dj_get_receiver_dev()
599 		djrcv_dev = kzalloc(sizeof(*djrcv_dev), GFP_KERNEL);  in dj_get_receiver_dev()
600 		if (!djrcv_dev)  in dj_get_receiver_dev()
603 		INIT_WORK(&djrcv_dev->work, delayedwork_callback);  in dj_get_receiver_dev()
604 		spin_lock_init(&djrcv_dev->lock);  in dj_get_receiver_dev()
605 		if (kfifo_alloc(&djrcv_dev->notif_fifo,  in dj_get_receiver_dev()
608 			kfree(djrcv_dev);  in dj_get_receiver_dev()
609 			djrcv_dev = NULL;  in dj_get_receiver_dev()
612 		kref_init(&djrcv_dev->kref);  in dj_get_receiver_dev()
613 		list_add_tail(&djrcv_dev->list, &dj_hdev_list);  in dj_get_receiver_dev()
614 		djrcv_dev->last_query = jiffies;  in dj_get_receiver_dev()
615 		djrcv_dev->type = type;  in dj_get_receiver_dev()
619 		djrcv_dev->keyboard = hdev;  in dj_get_receiver_dev()
621 		djrcv_dev->mouse = hdev;  in dj_get_receiver_dev()
623 		djrcv_dev->hidpp = hdev;  in dj_get_receiver_dev()
625 	hid_set_drvdata(hdev, djrcv_dev);  in dj_get_receiver_dev()
628 	return djrcv_dev;  in dj_get_receiver_dev()
631 static void logi_dj_recv_destroy_djhid_device(struct dj_receiver_dev *djrcv_dev,  in logi_dj_recv_destroy_djhid_device()  argument
638 	spin_lock_irqsave(&djrcv_dev->lock, flags);  in logi_dj_recv_destroy_djhid_device()
639 	dj_dev = djrcv_dev->paired_dj_devices[workitem->device_index];  in logi_dj_recv_destroy_djhid_device()
640 	djrcv_dev->paired_dj_devices[workitem->device_index] = NULL;  in logi_dj_recv_destroy_djhid_device()
641 	spin_unlock_irqrestore(&djrcv_dev->lock, flags);  in logi_dj_recv_destroy_djhid_device()
647 		hid_err(djrcv_dev->hidpp, "%s: can't destroy a NULL device\n",  in logi_dj_recv_destroy_djhid_device()
652 static void logi_dj_recv_add_djhid_device(struct dj_receiver_dev *djrcv_dev,  in logi_dj_recv_add_djhid_device()  argument
656 	struct hid_device *djrcv_hdev = djrcv_dev->hidpp;  in logi_dj_recv_add_djhid_device()
668 	if (djrcv_dev->paired_dj_devices[device_index]) {  in logi_dj_recv_add_djhid_device()
708 	if (djrcv_dev->type == recvr_type_27mhz)  in logi_dj_recv_add_djhid_device()
726 	dj_dev->dj_receiver_dev = djrcv_dev;  in logi_dj_recv_add_djhid_device()
730 	spin_lock_irqsave(&djrcv_dev->lock, flags);  in logi_dj_recv_add_djhid_device()
731 	djrcv_dev->paired_dj_devices[device_index] = dj_dev;  in logi_dj_recv_add_djhid_device()
732 	spin_unlock_irqrestore(&djrcv_dev->lock, flags);  in logi_dj_recv_add_djhid_device()
742 	spin_lock_irqsave(&djrcv_dev->lock, flags);  in logi_dj_recv_add_djhid_device()
743 	djrcv_dev->paired_dj_devices[device_index] = NULL;  in logi_dj_recv_add_djhid_device()
744 	spin_unlock_irqrestore(&djrcv_dev->lock, flags);  in logi_dj_recv_add_djhid_device()
752 	struct dj_receiver_dev *djrcv_dev =  in delayedwork_callback()  local
762 	spin_lock_irqsave(&djrcv_dev->lock, flags);  in delayedwork_callback()
768 	if (!djrcv_dev->ready) {  in delayedwork_callback()
771 		spin_unlock_irqrestore(&djrcv_dev->lock, flags);  in delayedwork_callback()
775 	count = kfifo_out(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));  in delayedwork_callback()
778 		spin_unlock_irqrestore(&djrcv_dev->lock, flags);  in delayedwork_callback()
782 	if (!kfifo_is_empty(&djrcv_dev->notif_fifo))  in delayedwork_callback()
783 		schedule_work(&djrcv_dev->work);  in delayedwork_callback()
785 	spin_unlock_irqrestore(&djrcv_dev->lock, flags);  in delayedwork_callback()
789 		logi_dj_recv_add_djhid_device(djrcv_dev, &workitem);  in delayedwork_callback()
792 		logi_dj_recv_destroy_djhid_device(djrcv_dev, &workitem);  in delayedwork_callback()
795 		retval = logi_dj_recv_query_paired_devices(djrcv_dev);  in delayedwork_callback()
797 			hid_err(djrcv_dev->hidpp, "%s: logi_dj_recv_query_paired_devices error: %d\n",  in delayedwork_callback()
819 static void logi_dj_recv_queue_unknown_work(struct dj_receiver_dev *djrcv_dev)  in logi_dj_recv_queue_unknown_work()  argument
824 	if (time_before(jiffies, djrcv_dev->last_query + HZ / 2))  in logi_dj_recv_queue_unknown_work()
827 	kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));  in logi_dj_recv_queue_unknown_work()
828 	schedule_work(&djrcv_dev->work);  in logi_dj_recv_queue_unknown_work()
831 static void logi_dj_recv_queue_notification(struct dj_receiver_dev *djrcv_dev,  in logi_dj_recv_queue_notification()  argument
861 		logi_dj_recv_queue_unknown_work(djrcv_dev);  in logi_dj_recv_queue_notification()
865 	kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));  in logi_dj_recv_queue_notification()
866 	schedule_work(&djrcv_dev->work);  in logi_dj_recv_queue_notification()
885 	struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);  in logi_hidpp_dev_conn_notif_equad()  local
908 		if (djrcv_dev->type == recvr_type_mouse_only)  in logi_hidpp_dev_conn_notif_equad()
942 	struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);  in logi_hidpp_recv_queue_notif()  local
1028 	kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));  in logi_hidpp_recv_queue_notif()
1029 	schedule_work(&djrcv_dev->work);  in logi_hidpp_recv_queue_notif()
1032 static void logi_dj_recv_forward_null_report(struct dj_receiver_dev *djrcv_dev,  in logi_dj_recv_forward_null_report()  argument
1040 	djdev = djrcv_dev->paired_dj_devices[dj_report->device_index];  in logi_dj_recv_forward_null_report()
1058 static void logi_dj_recv_forward_dj(struct dj_receiver_dev *djrcv_dev,  in logi_dj_recv_forward_dj()  argument
1064 	dj_device = djrcv_dev->paired_dj_devices[dj_report->device_index];  in logi_dj_recv_forward_dj()
1090 	struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);  in logi_dj_recv_forward_input_report()  local
1101 	spin_lock_irqsave(&djrcv_dev->lock, flags);  in logi_dj_recv_forward_input_report()
1103 		dj_dev = djrcv_dev->paired_dj_devices[i];  in logi_dj_recv_forward_input_report()
1106 			spin_unlock_irqrestore(&djrcv_dev->lock, flags);  in logi_dj_recv_forward_input_report()
1111 	logi_dj_recv_queue_unknown_work(djrcv_dev);  in logi_dj_recv_forward_input_report()
1112 	spin_unlock_irqrestore(&djrcv_dev->lock, flags);  in logi_dj_recv_forward_input_report()
1117 static int logi_dj_recv_send_report(struct dj_receiver_dev *djrcv_dev,  in logi_dj_recv_send_report()  argument
1120 	struct hid_device *hdev = djrcv_dev->hidpp;  in logi_dj_recv_send_report()
1142 static int logi_dj_recv_query_hidpp_devices(struct dj_receiver_dev *djrcv_dev)  in logi_dj_recv_query_hidpp_devices()  argument
1159 	retval = hid_hw_raw_request(djrcv_dev->hidpp,  in logi_dj_recv_query_hidpp_devices()
1169 static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev)  in logi_dj_recv_query_paired_devices()  argument
1174 	djrcv_dev->last_query = jiffies;  in logi_dj_recv_query_paired_devices()
1176 	if (djrcv_dev->type != recvr_type_dj)  in logi_dj_recv_query_paired_devices()
1177 		return logi_dj_recv_query_hidpp_devices(djrcv_dev);  in logi_dj_recv_query_paired_devices()
1185 	retval = logi_dj_recv_send_report(djrcv_dev, dj_report);  in logi_dj_recv_query_paired_devices()
1191 static int logi_dj_recv_switch_to_dj_mode(struct dj_receiver_dev *djrcv_dev,  in logi_dj_recv_switch_to_dj_mode()  argument
1194 	struct hid_device *hdev = djrcv_dev->hidpp;  in logi_dj_recv_switch_to_dj_mode()
1203 	if (djrcv_dev->type == recvr_type_dj) {  in logi_dj_recv_switch_to_dj_mode()
1211 		retval = logi_dj_recv_send_report(djrcv_dev, dj_report);  in logi_dj_recv_switch_to_dj_mode()
1281 	struct dj_receiver_dev *djrcv_dev = djdev->dj_receiver_dev;  in logi_dj_ll_raw_request()  local
1298 		return hid_hw_raw_request(djrcv_dev->hidpp, reportnum, buf,  in logi_dj_ll_raw_request()
1305 	if (djrcv_dev->type != recvr_type_dj && count >= 2) {  in logi_dj_ll_raw_request()
1306 		if (!djrcv_dev->keyboard) {  in logi_dj_ll_raw_request()
1311 		return hid_hw_raw_request(djrcv_dev->keyboard, 0, buf, count,  in logi_dj_ll_raw_request()
1326 	ret = hid_hw_raw_request(djrcv_dev->hidpp, out_buf[0], out_buf,  in logi_dj_ll_raw_request()
1440 	struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);  in logi_dj_dj_event()  local
1475 	spin_lock_irqsave(&djrcv_dev->lock, flags);  in logi_dj_dj_event()
1477 	if (!djrcv_dev->paired_dj_devices[dj_report->device_index]) {  in logi_dj_dj_event()
1479 		logi_dj_recv_queue_notification(djrcv_dev, dj_report);  in logi_dj_dj_event()
1488 		logi_dj_recv_queue_notification(djrcv_dev, dj_report);  in logi_dj_dj_event()
1493 			logi_dj_recv_forward_null_report(djrcv_dev, dj_report);  in logi_dj_dj_event()
1497 		logi_dj_recv_forward_dj(djrcv_dev, dj_report);  in logi_dj_dj_event()
1501 	spin_unlock_irqrestore(&djrcv_dev->lock, flags);  in logi_dj_dj_event()
1510 	struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);  in logi_dj_hidpp_event()  local
1547 	spin_lock_irqsave(&djrcv_dev->lock, flags);  in logi_dj_hidpp_event()
1549 	dj_dev = djrcv_dev->paired_dj_devices[device_index];  in logi_dj_hidpp_event()
1555 	if (djrcv_dev->type == recvr_type_27mhz && dj_dev &&  in logi_dj_hidpp_event()
1564 		kfifo_in(&djrcv_dev->notif_fifo, &workitem, sizeof(workitem));  in logi_dj_hidpp_event()
1575 			logi_dj_recv_queue_unknown_work(djrcv_dev);  in logi_dj_hidpp_event()
1578 	spin_unlock_irqrestore(&djrcv_dev->lock, flags);  in logi_dj_hidpp_event()
1587 	struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);  in logi_dj_raw_event()  local
1590 	if (!djrcv_dev)  in logi_dj_raw_event()
1595 		if (djrcv_dev->unnumbered_application == HID_GD_KEYBOARD) {  in logi_dj_raw_event()
1614 		if (djrcv_dev->unnumbered_application == HID_GD_MOUSE &&  in logi_dj_raw_event()
1665 	struct dj_receiver_dev *djrcv_dev;  in logi_dj_probe()  local
1731 	djrcv_dev = dj_get_receiver_dev(hdev, id->driver_data,  in logi_dj_probe()
1733 	if (!djrcv_dev) {  in logi_dj_probe()
1739 		djrcv_dev->unnumbered_application = rep->application;  in logi_dj_probe()
1750 		retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0);  in logi_dj_probe()
1770 		spin_lock_irqsave(&djrcv_dev->lock, flags);  in logi_dj_probe()
1771 		djrcv_dev->ready = true;  in logi_dj_probe()
1772 		spin_unlock_irqrestore(&djrcv_dev->lock, flags);  in logi_dj_probe()
1773 		retval = logi_dj_recv_query_paired_devices(djrcv_dev);  in logi_dj_probe()
1799 	struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);  in logi_dj_reset_resume()  local
1801 	if (!djrcv_dev || djrcv_dev->hidpp != hdev)  in logi_dj_reset_resume()
1804 	retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0);  in logi_dj_reset_resume()
1816 	struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);  in logi_dj_remove()  local
1823 	if (!djrcv_dev)  in logi_dj_remove()
1830 	spin_lock_irqsave(&djrcv_dev->lock, flags);  in logi_dj_remove()
1831 	djrcv_dev->ready = false;  in logi_dj_remove()
1832 	spin_unlock_irqrestore(&djrcv_dev->lock, flags);  in logi_dj_remove()
1834 	cancel_work_sync(&djrcv_dev->work);  in logi_dj_remove()
1847 		spin_lock_irqsave(&djrcv_dev->lock, flags);  in logi_dj_remove()
1848 		dj_dev = djrcv_dev->paired_dj_devices[i];  in logi_dj_remove()
1849 		djrcv_dev->paired_dj_devices[i] = NULL;  in logi_dj_remove()
1850 		spin_unlock_irqrestore(&djrcv_dev->lock, flags);  in logi_dj_remove()