drivers/nfc/pn544/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 NXP pn544 NFC Chip
   6  */
   7
   8 #include <linux/module.h>
   9 #include <linux/mod_devicetable.h>
  10 #include <linux/nfc.h>
  11 #include <net/nfc/hci.h>
  12 #include <net/nfc/llc.h>
  13
  14 #include "../mei_phy.h"
  15 #include "pn544.h"
  16
  17 #define PN544_DRIVER_NAME "pn544"
  18
  19 static int pn544_mei_probe(struct mei_cl_device *cldev,
  20                                const struct mei_cl_device_id *id)
  21 {
  22         struct nfc_mei_phy *phy;
  23         int r;
  24
  25         phy = nfc_mei_phy_alloc(cldev);
  26         if (!phy)
  27                 return -ENOMEM;
  28
  29         r = pn544_hci_probe(phy, &mei_phy_ops, LLC_NOP_NAME,
  30                             MEI_NFC_HEADER_SIZE, 0, MEI_NFC_MAX_HCI_PAYLOAD,
  31                             NULL, &phy->hdev);
  32         if (r < 0) {
  33                 nfc_mei_phy_free(phy);
  34
  35                 return r;
  36         }
  37
  38         return 0;
  39 }
  40
  41 static void pn544_mei_remove(struct mei_cl_device *cldev)
  42 {
  43         struct nfc_mei_phy *phy = mei_cldev_get_drvdata(cldev);
  44
  45         pn544_hci_remove(phy->hdev);
  46
  47         nfc_mei_phy_free(phy);
  48 }
  49
  50 static struct mei_cl_device_id pn544_mei_tbl[] = {
  51         { PN544_DRIVER_NAME, MEI_NFC_UUID, MEI_CL_VERSION_ANY},
  52
  53         /* required last entry */
  54         { }
  55 };
  56 MODULE_DEVICE_TABLE(mei, pn544_mei_tbl);
  57
  58 static struct mei_cl_driver pn544_driver = {
  59         .id_table = pn544_mei_tbl,
  60         .name = PN544_DRIVER_NAME,
  61
  62         .probe = pn544_mei_probe,
  63         .remove = pn544_mei_remove,
  64 };
  65
  66 module_mei_cl_driver(pn544_driver);
  67
  68 MODULE_LICENSE("GPL");
  69 MODULE_DESCRIPTION(DRIVER_DESC);