1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (C) 2013 Intel Corporation. All rights reserved.
4 *
5 * HCI based Driver for Inside Secure microread NFC Chip
6 */
7
8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
9
10 #include <linux/module.h>
11 #include <linux/mod_devicetable.h>
12 #include <linux/nfc.h>
13 #include <net/nfc/hci.h>
14 #include <net/nfc/llc.h>
15
16 #include "../mei_phy.h"
17 #include "microread.h"
18
19 #define MICROREAD_DRIVER_NAME "microread"
20
microread_mei_probe(struct mei_cl_device * cldev,const struct mei_cl_device_id * id)21 static int microread_mei_probe(struct mei_cl_device *cldev,
22 const struct mei_cl_device_id *id)
23 {
24 struct nfc_mei_phy *phy;
25 int r;
26
27 pr_info("Probing NFC microread\n");
28
29 phy = nfc_mei_phy_alloc(cldev);
30 if (!phy) {
31 pr_err("Cannot allocate memory for microread mei phy.\n");
32 return -ENOMEM;
33 }
34
35 r = microread_probe(phy, &mei_phy_ops, LLC_NOP_NAME,
36 MEI_NFC_HEADER_SIZE, 0, MEI_NFC_MAX_HCI_PAYLOAD,
37 &phy->hdev);
38 if (r < 0) {
39 nfc_mei_phy_free(phy);
40
41 return r;
42 }
43
44 return 0;
45 }
46
microread_mei_remove(struct mei_cl_device * cldev)47 static int microread_mei_remove(struct mei_cl_device *cldev)
48 {
49 struct nfc_mei_phy *phy = mei_cldev_get_drvdata(cldev);
50
51 microread_remove(phy->hdev);
52
53 nfc_mei_phy_free(phy);
54
55 return 0;
56 }
57
58 static struct mei_cl_device_id microread_mei_tbl[] = {
59 { MICROREAD_DRIVER_NAME, MEI_NFC_UUID, MEI_CL_VERSION_ANY},
60
61 /* required last entry */
62 { }
63 };
64 MODULE_DEVICE_TABLE(mei, microread_mei_tbl);
65
66 static struct mei_cl_driver microread_driver = {
67 .id_table = microread_mei_tbl,
68 .name = MICROREAD_DRIVER_NAME,
69
70 .probe = microread_mei_probe,
71 .remove = microread_mei_remove,
72 };
73
74 module_mei_cl_driver(microread_driver);
75
76 MODULE_LICENSE("GPL");
77 MODULE_DESCRIPTION(DRIVER_DESC);
78
