2 * HCI based Driver for NXP pn544 NFC Chip
4 * Copyright (C) 2013 Intel Corporation. All rights reserved.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, see <http://www.gnu.org/licenses/>.
19 #include <linux/module.h>
20 #include <linux/mod_devicetable.h>
21 #include <linux/nfc.h>
22 #include <net/nfc/hci.h>
23 #include <net/nfc/llc.h>
25 #include "../mei_phy.h"
28 #define PN544_DRIVER_NAME "pn544"
30 static int pn544_mei_probe(struct mei_cl_device *device,
31 const struct mei_cl_device_id *id)
33 struct nfc_mei_phy *phy;
36 pr_info("Probing NFC pn544\n");
38 phy = nfc_mei_phy_alloc(device);
40 pr_err("Cannot allocate memory for pn544 mei phy.\n");
44 r = pn544_hci_probe(phy, &mei_phy_ops, LLC_NOP_NAME,
45 MEI_NFC_HEADER_SIZE, 0, MEI_NFC_MAX_HCI_PAYLOAD,
48 nfc_mei_phy_free(phy);
56 static int pn544_mei_remove(struct mei_cl_device *device)
58 struct nfc_mei_phy *phy = mei_cl_get_drvdata(device);
60 pr_info("Removing pn544\n");
62 pn544_hci_remove(phy->hdev);
64 nfc_mei_phy_free(phy);
69 static struct mei_cl_device_id pn544_mei_tbl[] = {
70 { PN544_DRIVER_NAME, MEI_NFC_UUID},
72 /* required last entry */
75 MODULE_DEVICE_TABLE(mei, pn544_mei_tbl);
77 static struct mei_cl_driver pn544_driver = {
78 .id_table = pn544_mei_tbl,
79 .name = PN544_DRIVER_NAME,
81 .probe = pn544_mei_probe,
82 .remove = pn544_mei_remove,
85 static int pn544_mei_init(void)
89 pr_debug(DRIVER_DESC ": %s\n", __func__);
91 r = mei_cl_driver_register(&pn544_driver);
93 pr_err(PN544_DRIVER_NAME ": driver registration failed\n");
100 static void pn544_mei_exit(void)
102 mei_cl_driver_unregister(&pn544_driver);
105 module_init(pn544_mei_init);
106 module_exit(pn544_mei_exit);
108 MODULE_LICENSE("GPL");
109 MODULE_DESCRIPTION(DRIVER_DESC);