diff options
Diffstat (limited to '')
-rw-r--r-- | drivers/nfc/pn544/mei.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/drivers/nfc/pn544/mei.c b/drivers/nfc/pn544/mei.c new file mode 100644 index 000000000..ad57a8ec0 --- /dev/null +++ b/drivers/nfc/pn544/mei.c @@ -0,0 +1,88 @@ +/* + * HCI based Driver for NXP pn544 NFC Chip + * + * Copyright (C) 2013 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/module.h> +#include <linux/mod_devicetable.h> +#include <linux/nfc.h> +#include <net/nfc/hci.h> +#include <net/nfc/llc.h> + +#include "../mei_phy.h" +#include "pn544.h" + +#define PN544_DRIVER_NAME "pn544" + +static int pn544_mei_probe(struct mei_cl_device *cldev, + const struct mei_cl_device_id *id) +{ + struct nfc_mei_phy *phy; + int r; + + pr_info("Probing NFC pn544\n"); + + phy = nfc_mei_phy_alloc(cldev); + if (!phy) { + pr_err("Cannot allocate memory for pn544 mei phy.\n"); + return -ENOMEM; + } + + r = pn544_hci_probe(phy, &mei_phy_ops, LLC_NOP_NAME, + MEI_NFC_HEADER_SIZE, 0, MEI_NFC_MAX_HCI_PAYLOAD, + NULL, &phy->hdev); + if (r < 0) { + nfc_mei_phy_free(phy); + + return r; + } + + return 0; +} + +static int pn544_mei_remove(struct mei_cl_device *cldev) +{ + struct nfc_mei_phy *phy = mei_cldev_get_drvdata(cldev); + + pr_info("Removing pn544\n"); + + pn544_hci_remove(phy->hdev); + + nfc_mei_phy_free(phy); + + return 0; +} + +static struct mei_cl_device_id pn544_mei_tbl[] = { + { PN544_DRIVER_NAME, MEI_NFC_UUID, MEI_CL_VERSION_ANY}, + + /* required last entry */ + { } +}; +MODULE_DEVICE_TABLE(mei, pn544_mei_tbl); + +static struct mei_cl_driver pn544_driver = { + .id_table = pn544_mei_tbl, + .name = PN544_DRIVER_NAME, + + .probe = pn544_mei_probe, + .remove = pn544_mei_remove, +}; + +module_mei_cl_driver(pn544_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION(DRIVER_DESC); |