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 pr_err("Cannot allocate memory for pn544 mei phy.\n"); 28 return -ENOMEM; 29 } 30 31 r = pn544_hci_probe(phy, &mei_phy_ops, LLC_NOP_NAME, 32 MEI_NFC_HEADER_SIZE, 0, MEI_NFC_MAX_HCI_PAYLOAD, 33 NULL, &phy->hdev); 34 if (r < 0) { 35 nfc_mei_phy_free(phy); 36 37 return r; 38 } 39 40 return 0; 41 } 42 43 static void pn544_mei_remove(struct mei_cl_device *cldev) 44 { 45 struct nfc_mei_phy *phy = mei_cldev_get_drvdata(cldev); 46 47 pn544_hci_remove(phy->hdev); 48 49 nfc_mei_phy_free(phy); 50 } 51 52 static struct mei_cl_device_id pn544_mei_tbl[] = { 53 { PN544_DRIVER_NAME, MEI_NFC_UUID, MEI_CL_VERSION_ANY}, 54 55 /* required last entry */ 56 { } 57 }; 58 MODULE_DEVICE_TABLE(mei, pn544_mei_tbl); 59 60 static struct mei_cl_driver pn544_driver = { 61 .id_table = pn544_mei_tbl, 62 .name = PN544_DRIVER_NAME, 63 64 .probe = pn544_mei_probe, 65 .remove = pn544_mei_remove, 66 }; 67 68 module_mei_cl_driver(pn544_driver); 69 70 MODULE_LICENSE("GPL"); 71 MODULE_DESCRIPTION(DRIVER_DESC); 72