linux/drivers/nfc/s3fwrn5/core.c
Thomas Gleixner 9dd0abd232 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 123
Based on 1 normalized pattern(s):

  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 or later 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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 7 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190523091651.504392586@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:39:03 +02:00

209 lines
4.3 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* NCI based driver for Samsung S3FWRN5 NFC chip
*
* Copyright (C) 2015 Samsung Electrnoics
* Robert Baldyga <r.baldyga@samsung.com>
*/
#include <linux/module.h>
#include <net/nfc/nci_core.h>
#include "s3fwrn5.h"
#include "firmware.h"
#include "nci.h"
#define S3FWRN5_NFC_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \
NFC_PROTO_MIFARE_MASK | \
NFC_PROTO_FELICA_MASK | \
NFC_PROTO_ISO14443_MASK | \
NFC_PROTO_ISO14443_B_MASK | \
NFC_PROTO_ISO15693_MASK)
static int s3fwrn5_firmware_update(struct s3fwrn5_info *info)
{
bool need_update;
int ret;
s3fwrn5_fw_init(&info->fw_info, "sec_s3fwrn5_firmware.bin");
/* Update firmware */
s3fwrn5_set_wake(info, false);
s3fwrn5_set_mode(info, S3FWRN5_MODE_FW);
ret = s3fwrn5_fw_setup(&info->fw_info);
if (ret < 0)
return ret;
need_update = s3fwrn5_fw_check_version(&info->fw_info,
info->ndev->manufact_specific_info);
if (!need_update)
goto out;
dev_info(&info->ndev->nfc_dev->dev, "Detected new firmware version\n");
ret = s3fwrn5_fw_download(&info->fw_info);
if (ret < 0)
goto out;
/* Update RF configuration */
s3fwrn5_set_mode(info, S3FWRN5_MODE_NCI);
s3fwrn5_set_wake(info, true);
ret = s3fwrn5_nci_rf_configure(info, "sec_s3fwrn5_rfreg.bin");
s3fwrn5_set_wake(info, false);
out:
s3fwrn5_set_mode(info, S3FWRN5_MODE_COLD);
s3fwrn5_fw_cleanup(&info->fw_info);
return ret;
}
static int s3fwrn5_nci_open(struct nci_dev *ndev)
{
struct s3fwrn5_info *info = nci_get_drvdata(ndev);
if (s3fwrn5_get_mode(info) != S3FWRN5_MODE_COLD)
return -EBUSY;
s3fwrn5_set_mode(info, S3FWRN5_MODE_NCI);
s3fwrn5_set_wake(info, true);
return 0;
}
static int s3fwrn5_nci_close(struct nci_dev *ndev)
{
struct s3fwrn5_info *info = nci_get_drvdata(ndev);
s3fwrn5_set_wake(info, false);
s3fwrn5_set_mode(info, S3FWRN5_MODE_COLD);
return 0;
}
static int s3fwrn5_nci_send(struct nci_dev *ndev, struct sk_buff *skb)
{
struct s3fwrn5_info *info = nci_get_drvdata(ndev);
int ret;
mutex_lock(&info->mutex);
if (s3fwrn5_get_mode(info) != S3FWRN5_MODE_NCI) {
mutex_unlock(&info->mutex);
return -EINVAL;
}
ret = s3fwrn5_write(info, skb);
if (ret < 0)
kfree_skb(skb);
mutex_unlock(&info->mutex);
return ret;
}
static int s3fwrn5_nci_post_setup(struct nci_dev *ndev)
{
struct s3fwrn5_info *info = nci_get_drvdata(ndev);
int ret;
ret = s3fwrn5_firmware_update(info);
if (ret < 0)
goto out;
/* NCI core reset */
s3fwrn5_set_mode(info, S3FWRN5_MODE_NCI);
s3fwrn5_set_wake(info, true);
ret = nci_core_reset(info->ndev);
if (ret < 0)
goto out;
ret = nci_core_init(info->ndev);
out:
return ret;
}
static struct nci_ops s3fwrn5_nci_ops = {
.open = s3fwrn5_nci_open,
.close = s3fwrn5_nci_close,
.send = s3fwrn5_nci_send,
.post_setup = s3fwrn5_nci_post_setup,
};
int s3fwrn5_probe(struct nci_dev **ndev, void *phy_id, struct device *pdev,
const struct s3fwrn5_phy_ops *phy_ops, unsigned int max_payload)
{
struct s3fwrn5_info *info;
int ret;
info = devm_kzalloc(pdev, sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
info->phy_id = phy_id;
info->pdev = pdev;
info->phy_ops = phy_ops;
info->max_payload = max_payload;
mutex_init(&info->mutex);
s3fwrn5_set_mode(info, S3FWRN5_MODE_COLD);
s3fwrn5_nci_get_prop_ops(&s3fwrn5_nci_ops.prop_ops,
&s3fwrn5_nci_ops.n_prop_ops);
info->ndev = nci_allocate_device(&s3fwrn5_nci_ops,
S3FWRN5_NFC_PROTOCOLS, 0, 0);
if (!info->ndev)
return -ENOMEM;
nci_set_parent_dev(info->ndev, pdev);
nci_set_drvdata(info->ndev, info);
ret = nci_register_device(info->ndev);
if (ret < 0) {
nci_free_device(info->ndev);
return ret;
}
info->fw_info.ndev = info->ndev;
*ndev = info->ndev;
return ret;
}
EXPORT_SYMBOL(s3fwrn5_probe);
void s3fwrn5_remove(struct nci_dev *ndev)
{
struct s3fwrn5_info *info = nci_get_drvdata(ndev);
s3fwrn5_set_mode(info, S3FWRN5_MODE_COLD);
nci_unregister_device(ndev);
nci_free_device(ndev);
}
EXPORT_SYMBOL(s3fwrn5_remove);
int s3fwrn5_recv_frame(struct nci_dev *ndev, struct sk_buff *skb,
enum s3fwrn5_mode mode)
{
switch (mode) {
case S3FWRN5_MODE_NCI:
return nci_recv_frame(ndev, skb);
case S3FWRN5_MODE_FW:
return s3fwrn5_fw_recv_frame(ndev, skb);
default:
return -ENODEV;
}
}
EXPORT_SYMBOL(s3fwrn5_recv_frame);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Samsung S3FWRN5 NFC driver");
MODULE_AUTHOR("Robert Baldyga <r.baldyga@samsung.com>");