drivers/nfc/microread/mei.c

   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
  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
  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);