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/llc.h>
14 
15 #include "../mei_phy.h"
16 #include "microread.h"
17 
18 #define MICROREAD_DRIVER_NAME "microread"
19 
microread_mei_probe(struct mei_cl_device * cldev,const struct mei_cl_device_id * id)20 static int microread_mei_probe(struct mei_cl_device *cldev,
21 			       const struct mei_cl_device_id *id)
22 {
23 	struct nfc_mei_phy *phy;
24 	int r;
25 
26 	phy = nfc_mei_phy_alloc(cldev);
27 	if (!phy)
28 		return -ENOMEM;
29 
30 	r = microread_probe(phy, &mei_phy_ops, LLC_NOP_NAME,
31 			    MEI_NFC_HEADER_SIZE, 0, MEI_NFC_MAX_HCI_PAYLOAD,
32 			    &phy->hdev);
33 	if (r < 0) {
34 		nfc_mei_phy_free(phy);
35 
36 		return r;
37 	}
38 
39 	return 0;
40 }
41 
microread_mei_remove(struct mei_cl_device * cldev)42 static void microread_mei_remove(struct mei_cl_device *cldev)
43 {
44 	struct nfc_mei_phy *phy = mei_cldev_get_drvdata(cldev);
45 
46 	microread_remove(phy->hdev);
47 
48 	nfc_mei_phy_free(phy);
49 }
50 
51 static struct mei_cl_device_id microread_mei_tbl[] = {
52 	{ MICROREAD_DRIVER_NAME, MEI_NFC_UUID, MEI_CL_VERSION_ANY},
53 
54 	/* required last entry */
55 	{ }
56 };
57 MODULE_DEVICE_TABLE(mei, microread_mei_tbl);
58 
59 static struct mei_cl_driver microread_driver = {
60 	.id_table = microread_mei_tbl,
61 	.name = MICROREAD_DRIVER_NAME,
62 
63 	.probe = microread_mei_probe,
64 	.remove = microread_mei_remove,
65 };
66 
67 module_mei_cl_driver(microread_driver);
68 
69 MODULE_LICENSE("GPL");
70 MODULE_DESCRIPTION(DRIVER_DESC);
71