swh:1:snp:173f8deb0c56c557784b4fd217e7608ac6197844
Tip revision: 1860e379875dfe7271c649058aeddffe5afd9d0d authored by Linus Torvalds on 08 June 2014, 18:19:54 UTC
Linux 3.15
Linux 3.15
Tip revision: 1860e37
mei.c
/*
* HCI based Driver for Inside Secure microread 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/>.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#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 "microread.h"
#define MICROREAD_DRIVER_NAME "microread"
static int microread_mei_probe(struct mei_cl_device *device,
const struct mei_cl_device_id *id)
{
struct nfc_mei_phy *phy;
int r;
pr_info("Probing NFC microread\n");
phy = nfc_mei_phy_alloc(device);
if (!phy) {
pr_err("Cannot allocate memory for microread mei phy.\n");
return -ENOMEM;
}
r = microread_probe(phy, &mei_phy_ops, LLC_NOP_NAME,
MEI_NFC_HEADER_SIZE, 0, MEI_NFC_MAX_HCI_PAYLOAD,
&phy->hdev);
if (r < 0) {
nfc_mei_phy_free(phy);
return r;
}
return 0;
}
static int microread_mei_remove(struct mei_cl_device *device)
{
struct nfc_mei_phy *phy = mei_cl_get_drvdata(device);
microread_remove(phy->hdev);
nfc_mei_phy_free(phy);
return 0;
}
static struct mei_cl_device_id microread_mei_tbl[] = {
{ MICROREAD_DRIVER_NAME },
/* required last entry */
{ }
};
MODULE_DEVICE_TABLE(mei, microread_mei_tbl);
static struct mei_cl_driver microread_driver = {
.id_table = microread_mei_tbl,
.name = MICROREAD_DRIVER_NAME,
.probe = microread_mei_probe,
.remove = microread_mei_remove,
};
static int microread_mei_init(void)
{
int r;
pr_debug(DRIVER_DESC ": %s\n", __func__);
r = mei_cl_driver_register(µread_driver);
if (r) {
pr_err(MICROREAD_DRIVER_NAME ": driver registration failed\n");
return r;
}
return 0;
}
static void microread_mei_exit(void)
{
mei_cl_driver_unregister(µread_driver);
}
module_init(microread_mei_init);
module_exit(microread_mei_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION(DRIVER_DESC);