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nfc: s3fwrn5: Add driver for Samsung S3FWRN5 NFC Chip

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Add driver for Samsung S3FWRN5 NFC controller.
S3FWRN5 is using NCI protocol and I2C communication interface.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Robert Baldyga 2015-08-20 17:26:02 +02:00 • committed by Samuel Ortiz
parent 025a0cb838
commit c04c674fad
13 changed files with 1565 additions and 0 deletions
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99
drivers/nfc/s3fwrn5/s3fwrn5.h Normal file
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/*
* NCI based driver for Samsung S3FWRN5 NFC chip
*
* Copyright (C) 2015 Samsung Electrnoics
* Robert Baldyga <r.baldyga@samsung.com>
*
* 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/>.
*/
#ifndef __LOCAL_S3FWRN5_H_
#define __LOCAL_S3FWRN5_H_
#include <linux/nfc.h>
#include <net/nfc/nci_core.h>
#include "firmware.h"
enum s3fwrn5_mode {
S3FWRN5_MODE_COLD,
S3FWRN5_MODE_NCI,
S3FWRN5_MODE_FW,
};
struct s3fwrn5_phy_ops {
void (*set_wake)(void *id, bool sleep);
void (*set_mode)(void *id, enum s3fwrn5_mode);
enum s3fwrn5_mode (*get_mode)(void *id);
int (*write)(void *id, struct sk_buff *skb);
};
struct s3fwrn5_info {
struct nci_dev *ndev;
void *phy_id;
struct device *pdev;
struct s3fwrn5_phy_ops *phy_ops;
unsigned int max_payload;
struct s3fwrn5_fw_info fw_info;
struct mutex mutex;
};
static inline int s3fwrn5_set_mode(struct s3fwrn5_info *info,
enum s3fwrn5_mode mode)
{
if (!info->phy_ops->set_mode)
return -ENOTSUPP;
info->phy_ops->set_mode(info->phy_id, mode);
return 0;
}
static inline enum s3fwrn5_mode s3fwrn5_get_mode(struct s3fwrn5_info *info)
{
if (!info->phy_ops->get_mode)
return -ENOTSUPP;
return info->phy_ops->get_mode(info->phy_id);
}
static inline int s3fwrn5_set_wake(struct s3fwrn5_info *info, bool wake)
{
if (!info->phy_ops->set_wake)
return -ENOTSUPP;
info->phy_ops->set_wake(info->phy_id, wake);
return 0;
}
static inline int s3fwrn5_write(struct s3fwrn5_info *info, struct sk_buff *skb)
{
if (!info->phy_ops->write)
return -ENOTSUPP;
return info->phy_ops->write(info->phy_id, skb);
}
int s3fwrn5_probe(struct nci_dev **ndev, void *phy_id, struct device *pdev,
struct s3fwrn5_phy_ops *phy_ops, unsigned int max_payload);
void s3fwrn5_remove(struct nci_dev *ndev);
int s3fwrn5_recv_frame(struct nci_dev *ndev, struct sk_buff *skb,
enum s3fwrn5_mode mode);
#endif /* __LOCAL_S3FWRN5_H_ */