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 pr_info("Probing NFC microread\n"); 27 28 phy = nfc_mei_phy_alloc(cldev); 29 if (!phy) 30 return -ENOMEM; 31 32 r = microread_probe(phy, &mei_phy_ops, LLC_NOP_NAME, 33 MEI_NFC_HEADER_SIZE, 0, MEI_NFC_MAX_HCI_PAYLOAD, 34 &phy->hdev); 35 if (r < 0) { 36 nfc_mei_phy_free(phy); 37 38 return r; 39 } 40 41 return 0; 42 } 43 44 static void microread_mei_remove(struct mei_cl_device *cldev) 45 { 46 struct nfc_mei_phy *phy = mei_cldev_get_drvdata(cldev); 47 48 microread_remove(phy->hdev); 49 50 nfc_mei_phy_free(phy); 51 } 52 53 static struct mei_cl_device_id microread_mei_tbl[] = { 54 { MICROREAD_DRIVER_NAME, MEI_NFC_UUID, MEI_CL_VERSION_ANY}, 55 56 /* required last entry */ 57 { } 58 }; 59 MODULE_DEVICE_TABLE(mei, microread_mei_tbl); 60 61 static struct mei_cl_driver microread_driver = { 62 .id_table = microread_mei_tbl, 63 .name = MICROREAD_DRIVER_NAME, 64 65 .probe = microread_mei_probe, 66 .remove = microread_mei_remove, 67 }; 68 69 module_mei_cl_driver(microread_driver); 70 71 MODULE_LICENSE("GPL"); 72 MODULE_DESCRIPTION(DRIVER_DESC); 73