4  *  Bluetooth HCI UART driver for Intel devices
6  *  Copyright (C) 2015  Intel Corporation
109 	struct intel_data *intel = hu->priv;  in intel_wait_booting()  local
112 	err = wait_on_bit_timeout(&intel->flags, STATE_BOOTING,  in intel_wait_booting()
132 	struct intel_data *intel = hu->priv;  in intel_wait_lpm_transaction()  local
135 	err = wait_on_bit_timeout(&intel->flags, STATE_LPM_TRANSACTION,  in intel_wait_lpm_transaction()
155 	struct intel_data *intel = hu->priv;  in intel_lpm_suspend()  local
158 	if (!test_bit(STATE_LPM_ENABLED, &intel->flags) ||  in intel_lpm_suspend()
159 	    test_bit(STATE_SUSPENDED, &intel->flags))  in intel_lpm_suspend()
162 	if (test_bit(STATE_TX_ACTIVE, &intel->flags))  in intel_lpm_suspend()
176 	set_bit(STATE_LPM_TRANSACTION, &intel->flags);  in intel_lpm_suspend()
179 	skb_queue_head(&intel->txq, skb);  in intel_lpm_suspend()
185 	clear_bit(STATE_LPM_TRANSACTION, &intel->flags);  in intel_lpm_suspend()
187 	if (!test_bit(STATE_SUSPENDED, &intel->flags)) {  in intel_lpm_suspend()
201 	struct intel_data *intel = hu->priv;  in intel_lpm_resume()  local
204 	if (!test_bit(STATE_LPM_ENABLED, &intel->flags) ||  in intel_lpm_resume()
205 	    !test_bit(STATE_SUSPENDED, &intel->flags))  in intel_lpm_resume()
220 	set_bit(STATE_LPM_TRANSACTION, &intel->flags);  in intel_lpm_resume()
223 	skb_queue_head(&intel->txq, skb);  in intel_lpm_resume()
229 	clear_bit(STATE_LPM_TRANSACTION, &intel->flags);  in intel_lpm_resume()
231 	if (test_bit(STATE_SUSPENDED, &intel->flags)) {  in intel_lpm_resume()
245 	struct intel_data *intel = hu->priv;  in intel_lpm_host_wake()  local
250 	clear_bit(STATE_SUSPENDED, &intel->flags);  in intel_lpm_host_wake()
262 	skb_queue_head(&intel->txq, skb);  in intel_lpm_host_wake()
362 	struct intel_data *intel = container_of(work, struct intel_data,  in intel_busy_work()  local
366 	if (!intel->hu->tty->dev)  in intel_busy_work()
372 		if (intel->hu->tty->dev->parent == idev->pdev->dev.parent) {  in intel_busy_work()
384 	struct intel_data *intel;  in intel_open()  local
391 	intel = kzalloc(sizeof(*intel), GFP_KERNEL);  in intel_open()
392 	if (!intel)  in intel_open()
395 	skb_queue_head_init(&intel->txq);  in intel_open()
396 	INIT_WORK(&intel->busy_work, intel_busy_work);  in intel_open()
398 	intel->hu = hu;  in intel_open()
400 	hu->priv = intel;  in intel_open()
403 		set_bit(STATE_BOOTING, &intel->flags);  in intel_open()
410 	struct intel_data *intel = hu->priv;  in intel_close()  local
414 	cancel_work_sync(&intel->busy_work);  in intel_close()
418 	skb_queue_purge(&intel->txq);  in intel_close()
419 	kfree_skb(intel->rx_skb);  in intel_close()
420 	kfree(intel);  in intel_close()
428 	struct intel_data *intel = hu->priv;  in intel_flush()  local
432 	skb_queue_purge(&intel->txq);  in intel_flush()
464 	struct intel_data *intel = hu->priv;  in intel_set_baudrate()  local
475 	clear_bit(STATE_BOOTING, &intel->flags);  in intel_set_baudrate()
489 	/* Device will not accept speed change if Intel version has not been  in intel_set_baudrate()
494 		bt_dev_err(hdev, "Reading Intel version information failed (%ld)",  in intel_set_baudrate()
511 	skb_queue_tail(&intel->txq, skb);  in intel_set_baudrate()
525 	struct intel_data *intel = hu->priv;  in intel_setup()  local
569 	clear_bit(STATE_BOOTING, &intel->flags);  in intel_setup()
575 	set_bit(STATE_BOOTLOADER, &intel->flags);  in intel_setup()
577 	/* Read the Intel version information to determine if the device  in intel_setup()
589 		bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",  in intel_setup()
606 		bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",  in intel_setup()
627 		clear_bit(STATE_BOOTLOADER, &intel->flags);  in intel_setup()
636 		bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",  in intel_setup()
653 		bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",  in intel_setup()
666 	/* With this Intel bootloader only the hardware variant and device  in intel_setup()
689 		snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.sfi",  in intel_setup()
693 		snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u-%u.sfi",  in intel_setup()
697 		bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",  in intel_setup()
704 		bt_dev_err(hdev, "Failed to load Intel firmware file (%d)",  in intel_setup()
715 		snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.ddc",  in intel_setup()
719 		snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u-%u.ddc",  in intel_setup()
723 		bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",  in intel_setup()
735 	set_bit(STATE_DOWNLOADING, &intel->flags);  in intel_setup()
742 	set_bit(STATE_FIRMWARE_LOADED, &intel->flags);  in intel_setup()
757 	err = wait_on_bit_timeout(&intel->flags, STATE_DOWNLOADING,  in intel_setup()
772 	if (test_bit(STATE_FIRMWARE_FAILED, &intel->flags)) {  in intel_setup()
793 	/* We need to restore the default speed before Intel reset */  in intel_setup()
802 	set_bit(STATE_BOOTING, &intel->flags);  in intel_setup()
821 	clear_bit(STATE_BOOTING, &intel->flags);  in intel_setup()
838 				set_bit(STATE_LPM_ENABLED, &intel->flags);  in intel_setup()
839 				set_bit(STATE_TX_ACTIVE, &intel->flags);  in intel_setup()
862 	clear_bit(STATE_BOOTLOADER, &intel->flags);  in intel_setup()
870 	struct intel_data *intel = hu->priv;  in intel_recv_event()  local
873 	if (!test_bit(STATE_BOOTLOADER, &intel->flags) &&  in intel_recv_event()
874 	    !test_bit(STATE_BOOTING, &intel->flags))  in intel_recv_event()
886 			set_bit(STATE_FIRMWARE_FAILED, &intel->flags);  in intel_recv_event()
888 		if (test_and_clear_bit(STATE_DOWNLOADING, &intel->flags) &&  in intel_recv_event()
889 		    test_bit(STATE_FIRMWARE_LOADED, &intel->flags))  in intel_recv_event()
890 			wake_up_bit(&intel->flags, STATE_DOWNLOADING);  in intel_recv_event()
898 		if (test_and_clear_bit(STATE_BOOTING, &intel->flags))  in intel_recv_event()
899 			wake_up_bit(&intel->flags, STATE_BOOTING);  in intel_recv_event()
908 	struct intel_data *intel = hu->priv;  in intel_recv_lpm_notify()  local
913 		set_bit(STATE_TX_ACTIVE, &intel->flags);  in intel_recv_lpm_notify()
914 		schedule_work(&intel->busy_work);  in intel_recv_lpm_notify()
916 		clear_bit(STATE_TX_ACTIVE, &intel->flags);  in intel_recv_lpm_notify()
924 	struct intel_data *intel = hu->priv;  in intel_recv_lpm()  local
935 		set_bit(STATE_SUSPENDED, &intel->flags);  in intel_recv_lpm()
936 		if (test_and_clear_bit(STATE_LPM_TRANSACTION, &intel->flags))  in intel_recv_lpm()
937 			wake_up_bit(&intel->flags, STATE_LPM_TRANSACTION);  in intel_recv_lpm()
940 		clear_bit(STATE_SUSPENDED, &intel->flags);  in intel_recv_lpm()
941 		if (test_and_clear_bit(STATE_LPM_TRANSACTION, &intel->flags))  in intel_recv_lpm()
942 			wake_up_bit(&intel->flags, STATE_LPM_TRANSACTION);  in intel_recv_lpm()
970 	struct intel_data *intel = hu->priv;  in intel_recv()  local
975 	intel->rx_skb = h4_recv_buf(hu->hdev, intel->rx_skb, data, count,  in intel_recv()
978 	if (IS_ERR(intel->rx_skb)) {  in intel_recv()
979 		int err = PTR_ERR(intel->rx_skb);  in intel_recv()
981 		intel->rx_skb = NULL;  in intel_recv()
990 	struct intel_data *intel = hu->priv;  in intel_enqueue()  local
1012 	skb_queue_tail(&intel->txq, skb);  in intel_enqueue()
1019 	struct intel_data *intel = hu->priv;  in intel_dequeue()  local
1022 	skb = skb_dequeue(&intel->txq);  in intel_dequeue()
1026 	if (test_bit(STATE_BOOTLOADER, &intel->flags) &&  in intel_dequeue()
1048 	.name		= "Intel",