1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (C) 2014-2015 Marvell International Ltd.
22 	if (test_and_set_bit(NFCMRVL_NCI_RUNNING, &priv->flags))  in nfcmrvl_nci_open()
26 	clear_bit(NFCMRVL_PHY_ERROR, &priv->flags);  in nfcmrvl_nci_open()
28 	err = priv->if_ops->nci_open(priv);  in nfcmrvl_nci_open()
31 		clear_bit(NFCMRVL_NCI_RUNNING, &priv->flags);  in nfcmrvl_nci_open()
40 	if (!test_and_clear_bit(NFCMRVL_NCI_RUNNING, &priv->flags))  in nfcmrvl_nci_close()
43 	priv->if_ops->nci_close(priv);  in nfcmrvl_nci_close()
52 	nfc_info(priv->dev, "send entry, len %d\n", skb->len);  in nfcmrvl_nci_send()
54 	skb->dev = (void *)ndev;  in nfcmrvl_nci_send()
56 	if (priv->config.hci_muxed) {  in nfcmrvl_nci_send()
58 		unsigned char len = skb->len;  in nfcmrvl_nci_send()
67 	return priv->if_ops->nci_send(priv, skb);  in nfcmrvl_nci_send()
106 		return ERR_PTR(-ENOMEM);  in nfcmrvl_nci_register_dev()
108 	priv->drv_data = drv_data;  in nfcmrvl_nci_register_dev()
109 	priv->if_ops = ops;  in nfcmrvl_nci_register_dev()
110 	priv->dev = dev;  in nfcmrvl_nci_register_dev()
111 	priv->phy = phy;  in nfcmrvl_nci_register_dev()
113 	memcpy(&priv->config, pdata, sizeof(*pdata));  in nfcmrvl_nci_register_dev()
115 	if (gpio_is_valid(priv->config.reset_n_io)) {  in nfcmrvl_nci_register_dev()
116 		rc = gpio_request_one(priv->config.reset_n_io,  in nfcmrvl_nci_register_dev()
120 			priv->config.reset_n_io = -EINVAL;  in nfcmrvl_nci_register_dev()
131 	if (priv->config.hci_muxed)  in nfcmrvl_nci_register_dev()
142 	priv->ndev = nci_allocate_device(&nfcmrvl_nci_ops, protocols,  in nfcmrvl_nci_register_dev()
144 	if (!priv->ndev) {  in nfcmrvl_nci_register_dev()
146 		rc = -ENOMEM;  in nfcmrvl_nci_register_dev()
156 	nci_set_drvdata(priv->ndev, priv);  in nfcmrvl_nci_register_dev()
158 	rc = nci_register_device(priv->ndev);  in nfcmrvl_nci_register_dev()
173 	nci_free_device(priv->ndev);  in nfcmrvl_nci_register_dev()
175 	if (gpio_is_valid(priv->config.reset_n_io))  in nfcmrvl_nci_register_dev()
176 		gpio_free(priv->config.reset_n_io);  in nfcmrvl_nci_register_dev()
184 	struct nci_dev *ndev = priv->ndev;  in nfcmrvl_nci_unregister_dev()
187 	if (priv->ndev->nfc_dev->fw_download_in_progress)  in nfcmrvl_nci_unregister_dev()
192 	if (gpio_is_valid(priv->config.reset_n_io))  in nfcmrvl_nci_unregister_dev()
193 		gpio_free(priv->config.reset_n_io);  in nfcmrvl_nci_unregister_dev()
202 	if (priv->config.hci_muxed) {  in nfcmrvl_nci_recv_frame()
203 		if (skb->data[0] == NFCMRVL_HCI_EVENT_CODE &&  in nfcmrvl_nci_recv_frame()
204 		    skb->data[1] == NFCMRVL_HCI_NFC_EVENT_CODE) {  in nfcmrvl_nci_recv_frame()
214 	if (priv->ndev->nfc_dev->fw_download_in_progress) {  in nfcmrvl_nci_recv_frame()
219 	if (test_bit(NFCMRVL_NCI_RUNNING, &priv->flags))  in nfcmrvl_nci_recv_frame()
220 		nci_recv_frame(priv->ndev, skb);  in nfcmrvl_nci_recv_frame()
234 	clear_bit(NFCMRVL_PHY_ERROR, &priv->flags);  in nfcmrvl_chip_reset()
236 	if (gpio_is_valid(priv->config.reset_n_io)) {  in nfcmrvl_chip_reset()
237 		nfc_info(priv->dev, "reset the chip\n");  in nfcmrvl_chip_reset()
238 		gpio_set_value(priv->config.reset_n_io, 0);  in nfcmrvl_chip_reset()
240 		gpio_set_value(priv->config.reset_n_io, 1);  in nfcmrvl_chip_reset()
242 		nfc_info(priv->dev, "no reset available on this interface\n");  in nfcmrvl_chip_reset()
247 	if (gpio_is_valid(priv->config.reset_n_io))  in nfcmrvl_chip_halt()
248 		gpio_set_value(priv->config.reset_n_io, 0);  in nfcmrvl_chip_halt()
256 	reset_n_io = of_get_named_gpio(node, "reset-n-io", 0);  in nfcmrvl_parse_dt()
258 		pr_info("no reset-n-io config\n");  in nfcmrvl_parse_dt()
260 		pr_err("invalid reset-n-io GPIO\n");  in nfcmrvl_parse_dt()
263 	pdata->reset_n_io = reset_n_io;  in nfcmrvl_parse_dt()
265 	if (of_find_property(node, "hci-muxed", NULL))  in nfcmrvl_parse_dt()
266 		pdata->hci_muxed = 1;  in nfcmrvl_parse_dt()
268 		pdata->hci_muxed = 0;  in nfcmrvl_parse_dt()