64 	struct qcauart *qca = serdev_device_get_drvdata(serdev);  in qca_tty_receive()  local
65 	struct net_device *netdev = qca->net_dev;  in qca_tty_receive()
69 	if (!qca->rx_skb) {  in qca_tty_receive()
70 		qca->rx_skb = netdev_alloc_skb_ip_align(netdev,  in qca_tty_receive()
73 		if (!qca->rx_skb) {  in qca_tty_receive()
83 		retcode = qcafrm_fsm_decode(&qca->frm_handle,  in qca_tty_receive()
84 					    qca->rx_skb->data,  in qca_tty_receive()
85 					    skb_tailroom(qca->rx_skb),  in qca_tty_receive()
105 			skb_put(qca->rx_skb, retcode);  in qca_tty_receive()
106 			qca->rx_skb->protocol = eth_type_trans(  in qca_tty_receive()
107 						qca->rx_skb, qca->rx_skb->dev);  in qca_tty_receive()
108 			skb_checksum_none_assert(qca->rx_skb);  in qca_tty_receive()
109 			netif_rx(qca->rx_skb);  in qca_tty_receive()
110 			qca->rx_skb = netdev_alloc_skb_ip_align(netdev,  in qca_tty_receive()
113 			if (!qca->rx_skb) {  in qca_tty_receive()
127 	struct qcauart *qca = container_of(work, struct qcauart, tx_work);  in qcauart_transmit()  local
128 	struct net_device_stats *n_stats = &qca->net_dev->stats;  in qcauart_transmit()
131 	spin_lock_bh(&qca->lock);  in qcauart_transmit()
134 	if (!netif_running(qca->net_dev)) {  in qcauart_transmit()
135 		spin_unlock_bh(&qca->lock);  in qcauart_transmit()
139 	if (qca->tx_left <= 0)  {  in qcauart_transmit()
144 		spin_unlock_bh(&qca->lock);  in qcauart_transmit()
145 		netif_wake_queue(qca->net_dev);  in qcauart_transmit()
149 	written = serdev_device_write_buf(qca->serdev, qca->tx_head,  in qcauart_transmit()
150 					  qca->tx_left);  in qcauart_transmit()
152 		qca->tx_left -= written;  in qcauart_transmit()
153 		qca->tx_head += written;  in qcauart_transmit()
155 	spin_unlock_bh(&qca->lock);  in qcauart_transmit()
163 	struct qcauart *qca = serdev_device_get_drvdata(serdev);  in qca_tty_wakeup()  local
165 	schedule_work(&qca->tx_work);  in qca_tty_wakeup()
175 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_open()  local
177 	netif_start_queue(qca->net_dev);  in qcauart_netdev_open()
184 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_close()  local
187 	flush_work(&qca->tx_work);  in qcauart_netdev_close()
189 	spin_lock_bh(&qca->lock);  in qcauart_netdev_close()
190 	qca->tx_left = 0;  in qcauart_netdev_close()
191 	spin_unlock_bh(&qca->lock);  in qcauart_netdev_close()
200 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_xmit()  local
205 	spin_lock(&qca->lock);  in qcauart_netdev_xmit()
207 	WARN_ON(qca->tx_left);  in qcauart_netdev_xmit()
210 		spin_unlock(&qca->lock);  in qcauart_netdev_xmit()
211 		netdev_warn(qca->net_dev, "xmit: iface is down\n");  in qcauart_netdev_xmit()
215 	pos = qca->tx_buffer;  in qcauart_netdev_xmit()
232 	netif_stop_queue(qca->net_dev);  in qcauart_netdev_xmit()
234 	written = serdev_device_write_buf(qca->serdev, qca->tx_buffer,  in qcauart_netdev_xmit()
235 					  pos - qca->tx_buffer);  in qcauart_netdev_xmit()
237 		qca->tx_left = (pos - qca->tx_buffer) - written;  in qcauart_netdev_xmit()
238 		qca->tx_head = qca->tx_buffer + written;  in qcauart_netdev_xmit()
241 	spin_unlock(&qca->lock);  in qcauart_netdev_xmit()
251 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_tx_timeout()  local
253 	netdev_info(qca->net_dev, "Transmit timeout at %ld, latency %ld\n",  in qcauart_netdev_tx_timeout()
261 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_init()  local
269 	qca->tx_buffer = devm_kmalloc(&qca->serdev->dev, len, GFP_KERNEL);  in qcauart_netdev_init()
270 	if (!qca->tx_buffer)  in qcauart_netdev_init()
273 	qca->rx_skb = netdev_alloc_skb_ip_align(qca->net_dev,  in qcauart_netdev_init()
274 						qca->net_dev->mtu +  in qcauart_netdev_init()
276 	if (!qca->rx_skb)  in qcauart_netdev_init()
284 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_uninit()  local
286 	dev_kfree_skb(qca->rx_skb);  in qcauart_netdev_uninit()
314 	 .compatible = "qca,qca7000",
323 	struct qcauart *qca;  in qca_uart_probe()  local
333 	qca = netdev_priv(qcauart_dev);  in qca_uart_probe()
334 	if (!qca) {  in qca_uart_probe()
339 	qca->net_dev = qcauart_dev;  in qca_uart_probe()
340 	qca->serdev = serdev;  in qca_uart_probe()
341 	qcafrm_fsm_init_uart(&qca->frm_handle);  in qca_uart_probe()
343 	spin_lock_init(&qca->lock);  in qca_uart_probe()
344 	INIT_WORK(&qca->tx_work, qcauart_transmit);  in qca_uart_probe()
348 	ret = of_get_ethdev_address(serdev->dev.of_node, qca->net_dev);  in qca_uart_probe()
350 		eth_hw_addr_random(qca->net_dev);  in qca_uart_probe()
352 			 qca->net_dev->dev_addr);  in qca_uart_probe()
355 	netif_carrier_on(qca->net_dev);  in qca_uart_probe()
356 	serdev_device_set_drvdata(serdev, qca);  in qca_uart_probe()
376 		cancel_work_sync(&qca->tx_work);  in qca_uart_probe()
389 	struct qcauart *qca = serdev_device_get_drvdata(serdev);  in qca_uart_remove()  local
391 	unregister_netdev(qca->net_dev);  in qca_uart_remove()
395 	cancel_work_sync(&qca->tx_work);  in qca_uart_remove()
397 	free_netdev(qca->net_dev);  in qca_uart_remove()