tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
21static 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
47static void 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
56static struct mei_cl_device_id microread_mei_tbl[] = {
57 { MICROREAD_DRIVER_NAME, MEI_NFC_UUID, MEI_CL_VERSION_ANY},
58
59 /* required last entry */
60 { }
61};
62MODULE_DEVICE_TABLE(mei, microread_mei_tbl);
63
64static struct mei_cl_driver microread_driver = {
65 .id_table = microread_mei_tbl,
66 .name = MICROREAD_DRIVER_NAME,
67
68 .probe = microread_mei_probe,
69 .remove = microread_mei_remove,
70};
71
72module_mei_cl_driver(microread_driver);
73
74MODULE_LICENSE("GPL");
75MODULE_DESCRIPTION(DRIVER_DESC);