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 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 47 static 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 56 static 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 }; 62 MODULE_DEVICE_TABLE(mei, microread_mei_tbl); 63 64 static 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 72 module_mei_cl_driver(microread_driver); 73 74 MODULE_LICENSE("GPL"); 75 MODULE_DESCRIPTION(DRIVER_DESC); 76