1 // SPDX-License-Identifier: GPL-2.0-only
3  * Marvell NFC-over-UART driver
18 static int reset_n_io = -EINVAL;
37 	struct nci_uart *nu = priv->drv_data;  in nfcmrvl_uart_nci_send()
39 	return nu->ops.send(nu, skb);  in nfcmrvl_uart_nci_send()
45 	struct nci_uart *nu = priv->drv_data;  in nfcmrvl_uart_nci_update_config()
48 	nci_uart_set_config(nu, le32_to_cpu(config->baudrate),  in nfcmrvl_uart_nci_update_config()
49 			    config->flow_control);  in nfcmrvl_uart_nci_update_config()
65 	matched_node = of_get_compatible_child(node, "marvell,nfc-uart");  in nfcmrvl_uart_parse_dt()
67 		matched_node = of_get_compatible_child(node, "mrvl,nfc-uart");  in nfcmrvl_uart_parse_dt()
69 			return -ENODEV;  in nfcmrvl_uart_parse_dt()
79 	if (of_find_property(matched_node, "flow-control", NULL))  in nfcmrvl_uart_parse_dt()
80 		pdata->flow_control = 1;  in nfcmrvl_uart_parse_dt()
82 		pdata->flow_control = 0;  in nfcmrvl_uart_parse_dt()
84 	if (of_find_property(matched_node, "break-control", NULL))  in nfcmrvl_uart_parse_dt()
85 		pdata->break_control = 1;  in nfcmrvl_uart_parse_dt()
87 		pdata->break_control = 0;  in nfcmrvl_uart_parse_dt()
103 	struct device *dev = nu->tty->dev;  in nfcmrvl_nci_uart_open()
111 	if (dev && dev->parent && dev->parent->of_node)  in nfcmrvl_nci_uart_open()
112 		if (nfcmrvl_uart_parse_dt(dev->parent->of_node, &config) == 0)  in nfcmrvl_nci_uart_open()
116 		pr_info("No platform data / DT -> fallback to module params\n");  in nfcmrvl_nci_uart_open()
129 	priv->support_fw_dnld = true;  in nfcmrvl_nci_uart_open()
131 	nu->drv_data = priv;  in nfcmrvl_nci_uart_open()
132 	nu->ndev = priv->ndev;  in nfcmrvl_nci_uart_open()
139 	nfcmrvl_nci_unregister_dev((struct nfcmrvl_private *)nu->drv_data);  in nfcmrvl_nci_uart_close()
144 	return nfcmrvl_nci_recv_frame((struct nfcmrvl_private *)nu->drv_data,  in nfcmrvl_nci_uart_recv()
150 	struct nfcmrvl_private *priv = (struct nfcmrvl_private *)nu->drv_data;  in nfcmrvl_nci_uart_tx_start()
152 	if (priv->ndev->nfc_dev->fw_download_in_progress)  in nfcmrvl_nci_uart_tx_start()
156 	if (priv->config.break_control && nu->tty->ops->break_ctl) {  in nfcmrvl_nci_uart_tx_start()
157 		nu->tty->ops->break_ctl(nu->tty, 0);  in nfcmrvl_nci_uart_tx_start()
164 	struct nfcmrvl_private *priv = (struct nfcmrvl_private *)nu->drv_data;  in nfcmrvl_nci_uart_tx_done()
166 	if (priv->ndev->nfc_dev->fw_download_in_progress)  in nfcmrvl_nci_uart_tx_done()
174 	if (priv->config.break_control && nu->tty->ops->break_ctl) {  in nfcmrvl_nci_uart_tx_done()
175 		nu->tty->ops->break_ctl(nu->tty, -1);  in nfcmrvl_nci_uart_tx_done()
195 MODULE_DESCRIPTION("Marvell NFC-over-UART");
205 MODULE_PARM_DESC(hci_muxed, "Tell if transport is muxed in HCI one.");