nfc: s3fwrn5: Add driver for Samsung S3FWRN5 NFC Chip
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>hifive-unleashed-5.1
Robert Baldyga
Samuel Ortiz
parent
025a0cb838
commit
c04c674fad
|
|
@ -0,0 +1,27 @@
|
|||
* Samsung S3FWRN5 NCI NFC Controller
|
||||
|
||||
Required properties:
|
||||
- compatible: Should be "samsung,s3fwrn5-i2c".
|
||||
- reg: address on the bus
|
||||
- interrupt-parent: phandle for the interrupt gpio controller
|
||||
- interrupts: GPIO interrupt to which the chip is connected
|
||||
- s3fwrn5,en-gpios: Output GPIO pin used for enabling/disabling the chip
|
||||
- s3fwrn5,fw-gpios: Output GPIO pin used to enter firmware mode and
|
||||
sleep/wakeup control
|
||||
|
||||
Example:
|
||||
|
||||
&hsi2c_4 {
|
||||
status = "okay";
|
||||
s3fwrn5@27 {
|
||||
compatible = "samsung,s3fwrn5-i2c";
|
||||
|
||||
reg = <0x27>;
|
||||
|
||||
interrupt-parent = <&gpa1>;
|
||||
interrupts = <3 0 0>;
|
||||
|
||||
s3fwrn5,en-gpios = <&gpf1 4 0>;
|
||||
s3fwrn5,fw-gpios = <&gpj0 2 0>;
|
||||
};
|
||||
};
|
||||
|
|
@ -8871,6 +8871,12 @@ L: linux-media@vger.kernel.org
|
|||
S: Supported
|
||||
F: drivers/media/i2c/s5k5baf.c
|
||||
|
||||
SAMSUNG S3FWRN5 NFC DRIVER
|
||||
M: Robert Baldyga <r.baldyga@samsung.com>
|
||||
L: linux-nfc@lists.01.org (moderated for non-subscribers)
|
||||
S: Supported
|
||||
F: drivers/nfc/s3fwrn5
|
||||
|
||||
SAMSUNG SOC CLOCK DRIVERS
|
||||
M: Sylwester Nawrocki <s.nawrocki@samsung.com>
|
||||
M: Tomasz Figa <tomasz.figa@gmail.com>
|
||||
|
|
|
|||
|
|
@ -74,4 +74,5 @@ source "drivers/nfc/nfcmrvl/Kconfig"
|
|||
source "drivers/nfc/st21nfca/Kconfig"
|
||||
source "drivers/nfc/st-nci/Kconfig"
|
||||
source "drivers/nfc/nxp-nci/Kconfig"
|
||||
source "drivers/nfc/s3fwrn5/Kconfig"
|
||||
endmenu
|
||||
|
|
|
|||
|
|
@ -14,3 +14,4 @@ obj-$(CONFIG_NFC_TRF7970A) += trf7970a.o
|
|||
obj-$(CONFIG_NFC_ST21NFCA) += st21nfca/
|
||||
obj-$(CONFIG_NFC_ST_NCI) += st-nci/
|
||||
obj-$(CONFIG_NFC_NXP_NCI) += nxp-nci/
|
||||
obj-$(CONFIG_NFC_S3FWRN5) += s3fwrn5/
|
||||
|
|
|
|||
|
|
@ -0,0 +1,19 @@
|
|||
config NFC_S3FWRN5
|
||||
tristate
|
||||
---help---
|
||||
Core driver for Samsung S3FWRN5 NFC chip. Contains core utilities
|
||||
of chip. It's intended to be used by PHYs to avoid duplicating lots
|
||||
of common code.
|
||||
|
||||
config NFC_S3FWRN5_I2C
|
||||
tristate "Samsung S3FWRN5 I2C support"
|
||||
depends on NFC_NCI && I2C
|
||||
select NFC_S3FWRN5
|
||||
default n
|
||||
---help---
|
||||
This module adds support for an I2C interface to the S3FWRN5 chip.
|
||||
Select this if your platform is using the I2C bus.
|
||||
|
||||
To compile this driver as a module, choose m here. The module will
|
||||
be called s3fwrn5_i2c.ko.
|
||||
Say N if unsure.
|
||||
|
|
@ -0,0 +1,11 @@
|
|||
#
|
||||
# Makefile for Samsung S3FWRN5 NFC driver
|
||||
#
|
||||
|
||||
s3fwrn5-objs = core.o firmware.o nci.o
|
||||
s3fwrn5_i2c-objs = i2c.o
|
||||
|
||||
obj-$(CONFIG_NFC_S3FWRN5) += s3fwrn5.o
|
||||
obj-$(CONFIG_NFC_S3FWRN5_I2C) += s3fwrn5_i2c.o
|
||||
|
||||
ccflags-$(CONFIG_NFC_DEBUG) := -DDEBUG
|
||||
|
|
@ -0,0 +1,219 @@
|
|||
/*
|
||||
* 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/>.
|
||||
*/
|
||||
|
||||
#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,
|
||||
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>");
|
||||
|
|
@ -0,0 +1,511 @@
|
|||
/*
|
||||
* 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/>.
|
||||
*/
|
||||
|
||||
#include <linux/completion.h>
|
||||
#include <linux/firmware.h>
|
||||
#include <linux/crypto.h>
|
||||
#include <crypto/sha.h>
|
||||
|
||||
#include "s3fwrn5.h"
|
||||
#include "firmware.h"
|
||||
|
||||
struct s3fwrn5_fw_version {
|
||||
__u8 major;
|
||||
__u8 build1;
|
||||
__u8 build2;
|
||||
__u8 target;
|
||||
};
|
||||
|
||||
static int s3fwrn5_fw_send_msg(struct s3fwrn5_fw_info *fw_info,
|
||||
struct sk_buff *msg, struct sk_buff **rsp)
|
||||
{
|
||||
struct s3fwrn5_info *info =
|
||||
container_of(fw_info, struct s3fwrn5_info, fw_info);
|
||||
long ret;
|
||||
|
||||
reinit_completion(&fw_info->completion);
|
||||
|
||||
ret = s3fwrn5_write(info, msg);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = wait_for_completion_interruptible_timeout(
|
||||
&fw_info->completion, msecs_to_jiffies(1000));
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
else if (ret == 0)
|
||||
return -ENXIO;
|
||||
|
||||
if (!fw_info->rsp)
|
||||
return -EINVAL;
|
||||
|
||||
*rsp = fw_info->rsp;
|
||||
fw_info->rsp = NULL;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int s3fwrn5_fw_prep_msg(struct s3fwrn5_fw_info *fw_info,
|
||||
struct sk_buff **msg, u8 type, u8 code, const void *data, u16 len)
|
||||
{
|
||||
struct s3fwrn5_fw_header hdr;
|
||||
struct sk_buff *skb;
|
||||
|
||||
hdr.type = type | fw_info->parity;
|
||||
fw_info->parity ^= 0x80;
|
||||
hdr.code = code;
|
||||
hdr.len = len;
|
||||
|
||||
skb = alloc_skb(S3FWRN5_FW_HDR_SIZE + len, GFP_KERNEL);
|
||||
if (!skb)
|
||||
return -ENOMEM;
|
||||
|
||||
memcpy(skb_put(skb, S3FWRN5_FW_HDR_SIZE), &hdr, S3FWRN5_FW_HDR_SIZE);
|
||||
if (len)
|
||||
memcpy(skb_put(skb, len), data, len);
|
||||
|
||||
*msg = skb;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int s3fwrn5_fw_get_bootinfo(struct s3fwrn5_fw_info *fw_info,
|
||||
struct s3fwrn5_fw_cmd_get_bootinfo_rsp *bootinfo)
|
||||
{
|
||||
struct sk_buff *msg, *rsp = NULL;
|
||||
struct s3fwrn5_fw_header *hdr;
|
||||
int ret;
|
||||
|
||||
/* Send GET_BOOTINFO command */
|
||||
|
||||
ret = s3fwrn5_fw_prep_msg(fw_info, &msg, S3FWRN5_FW_MSG_CMD,
|
||||
S3FWRN5_FW_CMD_GET_BOOTINFO, NULL, 0);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = s3fwrn5_fw_send_msg(fw_info, msg, &rsp);
|
||||
kfree_skb(msg);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
hdr = (struct s3fwrn5_fw_header *) rsp->data;
|
||||
if (hdr->code != S3FWRN5_FW_RET_SUCCESS) {
|
||||
ret = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
|
||||
memcpy(bootinfo, rsp->data + S3FWRN5_FW_HDR_SIZE, 10);
|
||||
|
||||
out:
|
||||
kfree_skb(rsp);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int s3fwrn5_fw_enter_update_mode(struct s3fwrn5_fw_info *fw_info,
|
||||
const void *hash_data, u16 hash_size,
|
||||
const void *sig_data, u16 sig_size)
|
||||
{
|
||||
struct s3fwrn5_fw_cmd_enter_updatemode args;
|
||||
struct sk_buff *msg, *rsp = NULL;
|
||||
struct s3fwrn5_fw_header *hdr;
|
||||
int ret;
|
||||
|
||||
/* Send ENTER_UPDATE_MODE command */
|
||||
|
||||
args.hashcode_size = hash_size;
|
||||
args.signature_size = sig_size;
|
||||
|
||||
ret = s3fwrn5_fw_prep_msg(fw_info, &msg, S3FWRN5_FW_MSG_CMD,
|
||||
S3FWRN5_FW_CMD_ENTER_UPDATE_MODE, &args, sizeof(args));
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = s3fwrn5_fw_send_msg(fw_info, msg, &rsp);
|
||||
kfree_skb(msg);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
hdr = (struct s3fwrn5_fw_header *) rsp->data;
|
||||
if (hdr->code != S3FWRN5_FW_RET_SUCCESS) {
|
||||
ret = -EPROTO;
|
||||
goto out;
|
||||
}
|
||||
|
||||
kfree_skb(rsp);
|
||||
|
||||
/* Send hashcode data */
|
||||
|
||||
ret = s3fwrn5_fw_prep_msg(fw_info, &msg, S3FWRN5_FW_MSG_DATA, 0,
|
||||
hash_data, hash_size);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = s3fwrn5_fw_send_msg(fw_info, msg, &rsp);
|
||||
kfree_skb(msg);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
hdr = (struct s3fwrn5_fw_header *) rsp->data;
|
||||
if (hdr->code != S3FWRN5_FW_RET_SUCCESS) {
|
||||
ret = -EPROTO;
|
||||
goto out;
|
||||
}
|
||||
|
||||
kfree_skb(rsp);
|
||||
|
||||
/* Send signature data */
|
||||
|
||||
ret = s3fwrn5_fw_prep_msg(fw_info, &msg, S3FWRN5_FW_MSG_DATA, 0,
|
||||
sig_data, sig_size);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = s3fwrn5_fw_send_msg(fw_info, msg, &rsp);
|
||||
kfree_skb(msg);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
hdr = (struct s3fwrn5_fw_header *) rsp->data;
|
||||
if (hdr->code != S3FWRN5_FW_RET_SUCCESS)
|
||||
ret = -EPROTO;
|
||||
|
||||
out:
|
||||
kfree_skb(rsp);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int s3fwrn5_fw_update_sector(struct s3fwrn5_fw_info *fw_info,
|
||||
u32 base_addr, const void *data)
|
||||
{
|
||||
struct s3fwrn5_fw_cmd_update_sector args;
|
||||
struct sk_buff *msg, *rsp = NULL;
|
||||
struct s3fwrn5_fw_header *hdr;
|
||||
int ret, i;
|
||||
|
||||
/* Send UPDATE_SECTOR command */
|
||||
|
||||
args.base_address = base_addr;
|
||||
|
||||
ret = s3fwrn5_fw_prep_msg(fw_info, &msg, S3FWRN5_FW_MSG_CMD,
|
||||
S3FWRN5_FW_CMD_UPDATE_SECTOR, &args, sizeof(args));
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = s3fwrn5_fw_send_msg(fw_info, msg, &rsp);
|
||||
kfree_skb(msg);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
hdr = (struct s3fwrn5_fw_header *) rsp->data;
|
||||
if (hdr->code != S3FWRN5_FW_RET_SUCCESS) {
|
||||
ret = -EPROTO;
|
||||
goto err;
|
||||
}
|
||||
|
||||
kfree_skb(rsp);
|
||||
|
||||
/* Send data split into 256-byte packets */
|
||||
|
||||
for (i = 0; i < 16; ++i) {
|
||||
ret = s3fwrn5_fw_prep_msg(fw_info, &msg,
|
||||
S3FWRN5_FW_MSG_DATA, 0, data+256*i, 256);
|
||||
if (ret < 0)
|
||||
break;
|
||||
|
||||
ret = s3fwrn5_fw_send_msg(fw_info, msg, &rsp);
|
||||
kfree_skb(msg);
|
||||
if (ret < 0)
|
||||
break;
|
||||
|
||||
hdr = (struct s3fwrn5_fw_header *) rsp->data;
|
||||
if (hdr->code != S3FWRN5_FW_RET_SUCCESS) {
|
||||
ret = -EPROTO;
|
||||
goto err;
|
||||
}
|
||||
|
||||
kfree_skb(rsp);
|
||||
}
|
||||
|
||||
return ret;
|
||||
|
||||
err:
|
||||
kfree_skb(rsp);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int s3fwrn5_fw_complete_update_mode(struct s3fwrn5_fw_info *fw_info)
|
||||
{
|
||||
struct sk_buff *msg, *rsp = NULL;
|
||||
struct s3fwrn5_fw_header *hdr;
|
||||
int ret;
|
||||
|
||||
/* Send COMPLETE_UPDATE_MODE command */
|
||||
|
||||
ret = s3fwrn5_fw_prep_msg(fw_info, &msg, S3FWRN5_FW_MSG_CMD,
|
||||
S3FWRN5_FW_CMD_COMPLETE_UPDATE_MODE, NULL, 0);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = s3fwrn5_fw_send_msg(fw_info, msg, &rsp);
|
||||
kfree_skb(msg);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
hdr = (struct s3fwrn5_fw_header *) rsp->data;
|
||||
if (hdr->code != S3FWRN5_FW_RET_SUCCESS)
|
||||
ret = -EPROTO;
|
||||
|
||||
kfree_skb(rsp);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* Firmware header stucture:
|
||||
*
|
||||
* 0x00 - 0x0B : Date and time string (w/o NUL termination)
|
||||
* 0x10 - 0x13 : Firmware version
|
||||
* 0x14 - 0x17 : Signature address
|
||||
* 0x18 - 0x1B : Signature size
|
||||
* 0x1C - 0x1F : Firmware image address
|
||||
* 0x20 - 0x23 : Firmware sectors count
|
||||
* 0x24 - 0x27 : Custom signature address
|
||||
* 0x28 - 0x2B : Custom signature size
|
||||
*/
|
||||
|
||||
#define S3FWRN5_FW_IMAGE_HEADER_SIZE 44
|
||||
|
||||
static int s3fwrn5_fw_request_firmware(struct s3fwrn5_fw_info *fw_info)
|
||||
{
|
||||
struct s3fwrn5_fw_image *fw = &fw_info->fw;
|
||||
u32 sig_off;
|
||||
u32 image_off;
|
||||
u32 custom_sig_off;
|
||||
int ret;
|
||||
|
||||
ret = request_firmware(&fw->fw, fw_info->fw_name,
|
||||
&fw_info->ndev->nfc_dev->dev);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (fw->fw->size < S3FWRN5_FW_IMAGE_HEADER_SIZE)
|
||||
return -EINVAL;
|
||||
|
||||
memcpy(fw->date, fw->fw->data + 0x00, 12);
|
||||
fw->date[12] = '\0';
|
||||
|
||||
memcpy(&fw->version, fw->fw->data + 0x10, 4);
|
||||
|
||||
memcpy(&sig_off, fw->fw->data + 0x14, 4);
|
||||
fw->sig = fw->fw->data + sig_off;
|
||||
memcpy(&fw->sig_size, fw->fw->data + 0x18, 4);
|
||||
|
||||
memcpy(&image_off, fw->fw->data + 0x1C, 4);
|
||||
fw->image = fw->fw->data + image_off;
|
||||
memcpy(&fw->image_sectors, fw->fw->data + 0x20, 4);
|
||||
|
||||
memcpy(&custom_sig_off, fw->fw->data + 0x24, 4);
|
||||
fw->custom_sig = fw->fw->data + custom_sig_off;
|
||||
memcpy(&fw->custom_sig_size, fw->fw->data + 0x28, 4);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void s3fwrn5_fw_release_firmware(struct s3fwrn5_fw_info *fw_info)
|
||||
{
|
||||
release_firmware(fw_info->fw.fw);
|
||||
}
|
||||
|
||||
static int s3fwrn5_fw_get_base_addr(
|
||||
struct s3fwrn5_fw_cmd_get_bootinfo_rsp *bootinfo, u32 *base_addr)
|
||||
{
|
||||
int i;
|
||||
struct {
|
||||
u8 version[4];
|
||||
u32 base_addr;
|
||||
} match[] = {
|
||||
{{0x05, 0x00, 0x00, 0x00}, 0x00005000},
|
||||
{{0x05, 0x00, 0x00, 0x01}, 0x00003000},
|
||||
{{0x05, 0x00, 0x00, 0x02}, 0x00003000},
|
||||
{{0x05, 0x00, 0x00, 0x03}, 0x00003000},
|
||||
{{0x05, 0x00, 0x00, 0x05}, 0x00003000}
|
||||
};
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(match); ++i)
|
||||
if (bootinfo->hw_version[0] == match[i].version[0] &&
|
||||
bootinfo->hw_version[1] == match[i].version[1] &&
|
||||
bootinfo->hw_version[3] == match[i].version[3]) {
|
||||
*base_addr = match[i].base_addr;
|
||||
return 0;
|
||||
}
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static inline bool
|
||||
s3fwrn5_fw_is_custom(struct s3fwrn5_fw_cmd_get_bootinfo_rsp *bootinfo)
|
||||
{
|
||||
return !!bootinfo->hw_version[2];
|
||||
}
|
||||
|
||||
int s3fwrn5_fw_setup(struct s3fwrn5_fw_info *fw_info)
|
||||
{
|
||||
struct s3fwrn5_fw_cmd_get_bootinfo_rsp bootinfo;
|
||||
int ret;
|
||||
|
||||
/* Get firmware data */
|
||||
|
||||
ret = s3fwrn5_fw_request_firmware(fw_info);
|
||||
if (ret < 0) {
|
||||
dev_err(&fw_info->ndev->nfc_dev->dev,
|
||||
"Failed to get fw file, ret=%02x\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Get bootloader info */
|
||||
|
||||
ret = s3fwrn5_fw_get_bootinfo(fw_info, &bootinfo);
|
||||
if (ret < 0) {
|
||||
dev_err(&fw_info->ndev->nfc_dev->dev,
|
||||
"Failed to get bootinfo, ret=%02x\n", ret);
|
||||
goto err;
|
||||
}
|
||||
|
||||
/* Match hardware version to obtain firmware base address */
|
||||
|
||||
ret = s3fwrn5_fw_get_base_addr(&bootinfo, &fw_info->base_addr);
|
||||
if (ret < 0) {
|
||||
dev_err(&fw_info->ndev->nfc_dev->dev,
|
||||
"Unknown hardware version\n");
|
||||
goto err;
|
||||
}
|
||||
|
||||
fw_info->sector_size = bootinfo.sector_size;
|
||||
|
||||
fw_info->sig_size = s3fwrn5_fw_is_custom(&bootinfo) ?
|
||||
fw_info->fw.custom_sig_size : fw_info->fw.sig_size;
|
||||
fw_info->sig = s3fwrn5_fw_is_custom(&bootinfo) ?
|
||||
fw_info->fw.custom_sig : fw_info->fw.sig;
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
s3fwrn5_fw_release_firmware(fw_info);
|
||||
return ret;
|
||||
}
|
||||
|
||||
bool s3fwrn5_fw_check_version(struct s3fwrn5_fw_info *fw_info, u32 version)
|
||||
{
|
||||
struct s3fwrn5_fw_version *new = (void *) &fw_info->fw.version;
|
||||
struct s3fwrn5_fw_version *old = (void *) &version;
|
||||
|
||||
if (new->major > old->major)
|
||||
return true;
|
||||
if (new->build1 > old->build1)
|
||||
return true;
|
||||
if (new->build2 > old->build2)
|
||||
return true;
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
int s3fwrn5_fw_download(struct s3fwrn5_fw_info *fw_info)
|
||||
{
|
||||
struct s3fwrn5_fw_image *fw = &fw_info->fw;
|
||||
u8 hash_data[SHA1_DIGEST_SIZE];
|
||||
struct scatterlist sg;
|
||||
struct hash_desc desc;
|
||||
u32 image_size, off;
|
||||
int ret;
|
||||
|
||||
image_size = fw_info->sector_size * fw->image_sectors;
|
||||
|
||||
/* Compute SHA of firmware data */
|
||||
|
||||
sg_init_one(&sg, fw->image, image_size);
|
||||
desc.tfm = crypto_alloc_hash("sha1", 0, CRYPTO_ALG_ASYNC);
|
||||
crypto_hash_init(&desc);
|
||||
crypto_hash_update(&desc, &sg, image_size);
|
||||
crypto_hash_final(&desc, hash_data);
|
||||
crypto_free_hash(desc.tfm);
|
||||
|
||||
/* Firmware update process */
|
||||
|
||||
dev_info(&fw_info->ndev->nfc_dev->dev,
|
||||
"Firmware update: %s\n", fw_info->fw_name);
|
||||
|
||||
ret = s3fwrn5_fw_enter_update_mode(fw_info, hash_data,
|
||||
SHA1_DIGEST_SIZE, fw_info->sig, fw_info->sig_size);
|
||||
if (ret < 0) {
|
||||
dev_err(&fw_info->ndev->nfc_dev->dev,
|
||||
"Unable to enter update mode\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
for (off = 0; off < image_size; off += fw_info->sector_size) {
|
||||
ret = s3fwrn5_fw_update_sector(fw_info,
|
||||
fw_info->base_addr + off, fw->image + off);
|
||||
if (ret < 0) {
|
||||
dev_err(&fw_info->ndev->nfc_dev->dev,
|
||||
"Firmware update error (code=%d)\n", ret);
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
ret = s3fwrn5_fw_complete_update_mode(fw_info);
|
||||
if (ret < 0) {
|
||||
dev_err(&fw_info->ndev->nfc_dev->dev,
|
||||
"Unable to complete update mode\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
dev_info(&fw_info->ndev->nfc_dev->dev,
|
||||
"Firmware update: success\n");
|
||||
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
void s3fwrn5_fw_init(struct s3fwrn5_fw_info *fw_info, const char *fw_name)
|
||||
{
|
||||
fw_info->parity = 0x00;
|
||||
fw_info->rsp = NULL;
|
||||
fw_info->fw.fw = NULL;
|
||||
strcpy(fw_info->fw_name, fw_name);
|
||||
init_completion(&fw_info->completion);
|
||||
}
|
||||
|
||||
void s3fwrn5_fw_cleanup(struct s3fwrn5_fw_info *fw_info)
|
||||
{
|
||||
s3fwrn5_fw_release_firmware(fw_info);
|
||||
}
|
||||
|
||||
int s3fwrn5_fw_recv_frame(struct nci_dev *ndev, struct sk_buff *skb)
|
||||
{
|
||||
struct s3fwrn5_info *info = nci_get_drvdata(ndev);
|
||||
struct s3fwrn5_fw_info *fw_info = &info->fw_info;
|
||||
|
||||
BUG_ON(fw_info->rsp);
|
||||
|
||||
fw_info->rsp = skb;
|
||||
|
||||
complete(&fw_info->completion);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -0,0 +1,111 @@
|
|||
/*
|
||||
* 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_FIRMWARE_H_
|
||||
#define __LOCAL_S3FWRN5_FIRMWARE_H_
|
||||
|
||||
/* FW Message Types */
|
||||
#define S3FWRN5_FW_MSG_CMD 0x00
|
||||
#define S3FWRN5_FW_MSG_RSP 0x01
|
||||
#define S3FWRN5_FW_MSG_DATA 0x02
|
||||
|
||||
/* FW Return Codes */
|
||||
#define S3FWRN5_FW_RET_SUCCESS 0x00
|
||||
#define S3FWRN5_FW_RET_MESSAGE_TYPE_INVALID 0x01
|
||||
#define S3FWRN5_FW_RET_COMMAND_INVALID 0x02
|
||||
#define S3FWRN5_FW_RET_PAGE_DATA_OVERFLOW 0x03
|
||||
#define S3FWRN5_FW_RET_SECT_DATA_OVERFLOW 0x04
|
||||
#define S3FWRN5_FW_RET_AUTHENTICATION_FAIL 0x05
|
||||
#define S3FWRN5_FW_RET_FLASH_OPERATION_FAIL 0x06
|
||||
#define S3FWRN5_FW_RET_ADDRESS_OUT_OF_RANGE 0x07
|
||||
#define S3FWRN5_FW_RET_PARAMETER_INVALID 0x08
|
||||
|
||||
/* ---- FW Packet structures ---- */
|
||||
#define S3FWRN5_FW_HDR_SIZE 4
|
||||
|
||||
struct s3fwrn5_fw_header {
|
||||
__u8 type;
|
||||
__u8 code;
|
||||
__u16 len;
|
||||
};
|
||||
|
||||
#define S3FWRN5_FW_CMD_RESET 0x00
|
||||
|
||||
#define S3FWRN5_FW_CMD_GET_BOOTINFO 0x01
|
||||
|
||||
struct s3fwrn5_fw_cmd_get_bootinfo_rsp {
|
||||
__u8 hw_version[4];
|
||||
__u16 sector_size;
|
||||
__u16 page_size;
|
||||
__u16 frame_max_size;
|
||||
__u16 hw_buffer_size;
|
||||
};
|
||||
|
||||
#define S3FWRN5_FW_CMD_ENTER_UPDATE_MODE 0x02
|
||||
|
||||
struct s3fwrn5_fw_cmd_enter_updatemode {
|
||||
__u16 hashcode_size;
|
||||
__u16 signature_size;
|
||||
};
|
||||
|
||||
#define S3FWRN5_FW_CMD_UPDATE_SECTOR 0x04
|
||||
|
||||
struct s3fwrn5_fw_cmd_update_sector {
|
||||
__u32 base_address;
|
||||
};
|
||||
|
||||
#define S3FWRN5_FW_CMD_COMPLETE_UPDATE_MODE 0x05
|
||||
|
||||
struct s3fwrn5_fw_image {
|
||||
const struct firmware *fw;
|
||||
|
||||
char date[13];
|
||||
u32 version;
|
||||
const void *sig;
|
||||
u32 sig_size;
|
||||
const void *image;
|
||||
u32 image_sectors;
|
||||
const void *custom_sig;
|
||||
u32 custom_sig_size;
|
||||
};
|
||||
|
||||
struct s3fwrn5_fw_info {
|
||||
struct nci_dev *ndev;
|
||||
struct s3fwrn5_fw_image fw;
|
||||
char fw_name[NFC_FIRMWARE_NAME_MAXSIZE + 1];
|
||||
|
||||
const void *sig;
|
||||
u32 sig_size;
|
||||
u32 sector_size;
|
||||
u32 base_addr;
|
||||
|
||||
struct completion completion;
|
||||
struct sk_buff *rsp;
|
||||
char parity;
|
||||
};
|
||||
|
||||
void s3fwrn5_fw_init(struct s3fwrn5_fw_info *fw_info, const char *fw_name);
|
||||
int s3fwrn5_fw_setup(struct s3fwrn5_fw_info *fw_info);
|
||||
bool s3fwrn5_fw_check_version(struct s3fwrn5_fw_info *fw_info, u32 version);
|
||||
int s3fwrn5_fw_download(struct s3fwrn5_fw_info *fw_info);
|
||||
void s3fwrn5_fw_cleanup(struct s3fwrn5_fw_info *fw_info);
|
||||
|
||||
int s3fwrn5_fw_recv_frame(struct nci_dev *ndev, struct sk_buff *skb);
|
||||
|
||||
#endif /* __LOCAL_S3FWRN5_FIRMWARE_H_ */
|
||||
|
|
@ -0,0 +1,306 @@
|
|||
/*
|
||||
* I2C Link Layer for Samsung S3FWRN5 NCI based Driver
|
||||
*
|
||||
* 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/>.
|
||||
*/
|
||||
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/gpio.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/of_gpio.h>
|
||||
#include <linux/of_irq.h>
|
||||
#include <linux/module.h>
|
||||
|
||||
#include <net/nfc/nfc.h>
|
||||
|
||||
#include "s3fwrn5.h"
|
||||
|
||||
#define S3FWRN5_I2C_DRIVER_NAME "s3fwrn5_i2c"
|
||||
|
||||
#define S3FWRN5_I2C_MAX_PAYLOAD 32
|
||||
#define S3FWRN5_EN_WAIT_TIME 150
|
||||
|
||||
struct s3fwrn5_i2c_phy {
|
||||
struct i2c_client *i2c_dev;
|
||||
struct nci_dev *ndev;
|
||||
|
||||
unsigned int gpio_en;
|
||||
unsigned int gpio_fw_wake;
|
||||
|
||||
struct mutex mutex;
|
||||
|
||||
enum s3fwrn5_mode mode;
|
||||
unsigned int irq_skip:1;
|
||||
};
|
||||
|
||||
static void s3fwrn5_i2c_set_wake(void *phy_id, bool wake)
|
||||
{
|
||||
struct s3fwrn5_i2c_phy *phy = phy_id;
|
||||
|
||||
mutex_lock(&phy->mutex);
|
||||
gpio_set_value(phy->gpio_fw_wake, wake);
|
||||
msleep(S3FWRN5_EN_WAIT_TIME/2);
|
||||
mutex_unlock(&phy->mutex);
|
||||
}
|
||||
|
||||
static void s3fwrn5_i2c_set_mode(void *phy_id, enum s3fwrn5_mode mode)
|
||||
{
|
||||
struct s3fwrn5_i2c_phy *phy = phy_id;
|
||||
|
||||
mutex_lock(&phy->mutex);
|
||||
|
||||
if (phy->mode == mode)
|
||||
goto out;
|
||||
|
||||
phy->mode = mode;
|
||||
|
||||
gpio_set_value(phy->gpio_en, 1);
|
||||
gpio_set_value(phy->gpio_fw_wake, 0);
|
||||
if (mode == S3FWRN5_MODE_FW)
|
||||
gpio_set_value(phy->gpio_fw_wake, 1);
|
||||
|
||||
if (mode != S3FWRN5_MODE_COLD) {
|
||||
msleep(S3FWRN5_EN_WAIT_TIME);
|
||||
gpio_set_value(phy->gpio_en, 0);
|
||||
msleep(S3FWRN5_EN_WAIT_TIME/2);
|
||||
}
|
||||
|
||||
phy->irq_skip = true;
|
||||
|
||||
out:
|
||||
mutex_unlock(&phy->mutex);
|
||||
}
|
||||
|
||||
static enum s3fwrn5_mode s3fwrn5_i2c_get_mode(void *phy_id)
|
||||
{
|
||||
struct s3fwrn5_i2c_phy *phy = phy_id;
|
||||
enum s3fwrn5_mode mode;
|
||||
|
||||
mutex_lock(&phy->mutex);
|
||||
|
||||
mode = phy->mode;
|
||||
|
||||
mutex_unlock(&phy->mutex);
|
||||
|
||||
return mode;
|
||||
}
|
||||
|
||||
static int s3fwrn5_i2c_write(void *phy_id, struct sk_buff *skb)
|
||||
{
|
||||
struct s3fwrn5_i2c_phy *phy = phy_id;
|
||||
int ret;
|
||||
|
||||
mutex_lock(&phy->mutex);
|
||||
|
||||
phy->irq_skip = false;
|
||||
|
||||
ret = i2c_master_send(phy->i2c_dev, skb->data, skb->len);
|
||||
if (ret == -EREMOTEIO) {
|
||||
/* Retry, chip was in standby */
|
||||
usleep_range(110000, 120000);
|
||||
ret = i2c_master_send(phy->i2c_dev, skb->data, skb->len);
|
||||
}
|
||||
|
||||
mutex_unlock(&phy->mutex);
|
||||
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (ret != skb->len)
|
||||
return -EREMOTEIO;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct s3fwrn5_phy_ops i2c_phy_ops = {
|
||||
.set_wake = s3fwrn5_i2c_set_wake,
|
||||
.set_mode = s3fwrn5_i2c_set_mode,
|
||||
.get_mode = s3fwrn5_i2c_get_mode,
|
||||
.write = s3fwrn5_i2c_write,
|
||||
};
|
||||
|
||||
static int s3fwrn5_i2c_read(struct s3fwrn5_i2c_phy *phy)
|
||||
{
|
||||
struct sk_buff *skb;
|
||||
size_t hdr_size;
|
||||
size_t data_len;
|
||||
char hdr[4];
|
||||
int ret;
|
||||
|
||||
hdr_size = (phy->mode == S3FWRN5_MODE_NCI) ?
|
||||
NCI_CTRL_HDR_SIZE : S3FWRN5_FW_HDR_SIZE;
|
||||
ret = i2c_master_recv(phy->i2c_dev, hdr, hdr_size);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (ret < hdr_size)
|
||||
return -EBADMSG;
|
||||
|
||||
data_len = (phy->mode == S3FWRN5_MODE_NCI) ?
|
||||
((struct nci_ctrl_hdr *)hdr)->plen :
|
||||
((struct s3fwrn5_fw_header *)hdr)->len;
|
||||
|
||||
skb = alloc_skb(hdr_size + data_len, GFP_KERNEL);
|
||||
if (!skb)
|
||||
return -ENOMEM;
|
||||
|
||||
memcpy(skb_put(skb, hdr_size), hdr, hdr_size);
|
||||
|
||||
if (data_len == 0)
|
||||
goto out;
|
||||
|
||||
ret = i2c_master_recv(phy->i2c_dev, skb_put(skb, data_len), data_len);
|
||||
if (ret != data_len) {
|
||||
kfree_skb(skb);
|
||||
return -EBADMSG;
|
||||
}
|
||||
|
||||
out:
|
||||
return s3fwrn5_recv_frame(phy->ndev, skb, phy->mode);
|
||||
}
|
||||
|
||||
static irqreturn_t s3fwrn5_i2c_irq_thread_fn(int irq, void *phy_id)
|
||||
{
|
||||
struct s3fwrn5_i2c_phy *phy = phy_id;
|
||||
int ret = 0;
|
||||
|
||||
if (!phy || !phy->ndev) {
|
||||
WARN_ON_ONCE(1);
|
||||
return IRQ_NONE;
|
||||
}
|
||||
|
||||
mutex_lock(&phy->mutex);
|
||||
|
||||
if (phy->irq_skip)
|
||||
goto out;
|
||||
|
||||
switch (phy->mode) {
|
||||
case S3FWRN5_MODE_NCI:
|
||||
case S3FWRN5_MODE_FW:
|
||||
ret = s3fwrn5_i2c_read(phy);
|
||||
break;
|
||||
case S3FWRN5_MODE_COLD:
|
||||
ret = -EREMOTEIO;
|
||||
break;
|
||||
}
|
||||
|
||||
out:
|
||||
mutex_unlock(&phy->mutex);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static int s3fwrn5_i2c_parse_dt(struct i2c_client *client)
|
||||
{
|
||||
struct s3fwrn5_i2c_phy *phy = i2c_get_clientdata(client);
|
||||
struct device_node *np = client->dev.of_node;
|
||||
|
||||
if (!np)
|
||||
return -ENODEV;
|
||||
|
||||
phy->gpio_en = of_get_named_gpio(np, "s3fwrn5,en-gpios", 0);
|
||||
if (!gpio_is_valid(phy->gpio_en))
|
||||
return -ENODEV;
|
||||
|
||||
phy->gpio_fw_wake = of_get_named_gpio(np, "s3fwrn5,fw-gpios", 0);
|
||||
if (!gpio_is_valid(phy->gpio_fw_wake))
|
||||
return -ENODEV;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int s3fwrn5_i2c_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
struct s3fwrn5_i2c_phy *phy;
|
||||
int ret;
|
||||
|
||||
phy = devm_kzalloc(&client->dev, sizeof(*phy), GFP_KERNEL);
|
||||
if (!phy)
|
||||
return -ENOMEM;
|
||||
|
||||
mutex_init(&phy->mutex);
|
||||
phy->mode = S3FWRN5_MODE_COLD;
|
||||
phy->irq_skip = true;
|
||||
|
||||
phy->i2c_dev = client;
|
||||
i2c_set_clientdata(client, phy);
|
||||
|
||||
ret = s3fwrn5_i2c_parse_dt(client);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->gpio_en,
|
||||
GPIOF_OUT_INIT_HIGH, "s3fwrn5_en");
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->gpio_fw_wake,
|
||||
GPIOF_OUT_INIT_LOW, "s3fwrn5_fw_wake");
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = s3fwrn5_probe(&phy->ndev, phy, &phy->i2c_dev->dev, &i2c_phy_ops,
|
||||
S3FWRN5_I2C_MAX_PAYLOAD);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = request_threaded_irq(phy->i2c_dev->irq, NULL,
|
||||
s3fwrn5_i2c_irq_thread_fn, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
|
||||
S3FWRN5_I2C_DRIVER_NAME, phy);
|
||||
if (ret)
|
||||
s3fwrn5_remove(phy->ndev);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int s3fwrn5_i2c_remove(struct i2c_client *client)
|
||||
{
|
||||
struct s3fwrn5_i2c_phy *phy = i2c_get_clientdata(client);
|
||||
|
||||
s3fwrn5_remove(phy->ndev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct i2c_device_id s3fwrn5_i2c_id_table[] = {
|
||||
{S3FWRN5_I2C_DRIVER_NAME, 0},
|
||||
{}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, s3fwrn5_i2c_id_table);
|
||||
|
||||
static const struct of_device_id of_s3fwrn5_i2c_match[] = {
|
||||
{ .compatible = "samsung,s3fwrn5-i2c", },
|
||||
{}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, of_s3fwrn5_i2c_match);
|
||||
|
||||
static struct i2c_driver s3fwrn5_i2c_driver = {
|
||||
.driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.name = S3FWRN5_I2C_DRIVER_NAME,
|
||||
.of_match_table = of_match_ptr(of_s3fwrn5_i2c_match),
|
||||
},
|
||||
.probe = s3fwrn5_i2c_probe,
|
||||
.remove = s3fwrn5_i2c_remove,
|
||||
.id_table = s3fwrn5_i2c_id_table,
|
||||
};
|
||||
|
||||
module_i2c_driver(s3fwrn5_i2c_driver);
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_DESCRIPTION("I2C driver for Samsung S3FWRN5");
|
||||
MODULE_AUTHOR("Robert Baldyga <r.baldyga@samsung.com>");
|
||||
|
|
@ -0,0 +1,165 @@
|
|||
/*
|
||||
* 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/>.
|
||||
*/
|
||||
|
||||
#include <linux/completion.h>
|
||||
#include <linux/firmware.h>
|
||||
|
||||
#include "s3fwrn5.h"
|
||||
#include "nci.h"
|
||||
|
||||
static int s3fwrn5_nci_prop_rsp(struct nci_dev *ndev, struct sk_buff *skb)
|
||||
{
|
||||
__u8 status = skb->data[0];
|
||||
|
||||
nci_req_complete(ndev, status);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct nci_prop_ops s3fwrn5_nci_prop_ops[] = {
|
||||
{
|
||||
.opcode = nci_opcode_pack(NCI_GID_PROPRIETARY,
|
||||
NCI_PROP_AGAIN),
|
||||
.rsp = s3fwrn5_nci_prop_rsp,
|
||||
},
|
||||
{
|
||||
.opcode = nci_opcode_pack(NCI_GID_PROPRIETARY,
|
||||
NCI_PROP_GET_RFREG),
|
||||
.rsp = s3fwrn5_nci_prop_rsp,
|
||||
},
|
||||
{
|
||||
.opcode = nci_opcode_pack(NCI_GID_PROPRIETARY,
|
||||
NCI_PROP_SET_RFREG),
|
||||
.rsp = s3fwrn5_nci_prop_rsp,
|
||||
},
|
||||
{
|
||||
.opcode = nci_opcode_pack(NCI_GID_PROPRIETARY,
|
||||
NCI_PROP_GET_RFREG_VER),
|
||||
.rsp = s3fwrn5_nci_prop_rsp,
|
||||
},
|
||||
{
|
||||
.opcode = nci_opcode_pack(NCI_GID_PROPRIETARY,
|
||||
NCI_PROP_SET_RFREG_VER),
|
||||
.rsp = s3fwrn5_nci_prop_rsp,
|
||||
},
|
||||
{
|
||||
.opcode = nci_opcode_pack(NCI_GID_PROPRIETARY,
|
||||
NCI_PROP_START_RFREG),
|
||||
.rsp = s3fwrn5_nci_prop_rsp,
|
||||
},
|
||||
{
|
||||
.opcode = nci_opcode_pack(NCI_GID_PROPRIETARY,
|
||||
NCI_PROP_STOP_RFREG),
|
||||
.rsp = s3fwrn5_nci_prop_rsp,
|
||||
},
|
||||
{
|
||||
.opcode = nci_opcode_pack(NCI_GID_PROPRIETARY,
|
||||
NCI_PROP_FW_CFG),
|
||||
.rsp = s3fwrn5_nci_prop_rsp,
|
||||
},
|
||||
{
|
||||
.opcode = nci_opcode_pack(NCI_GID_PROPRIETARY,
|
||||
NCI_PROP_WR_RESET),
|
||||
.rsp = s3fwrn5_nci_prop_rsp,
|
||||
},
|
||||
};
|
||||
|
||||
void s3fwrn5_nci_get_prop_ops(struct nci_prop_ops **ops, size_t *n)
|
||||
{
|
||||
*ops = s3fwrn5_nci_prop_ops;
|
||||
*n = ARRAY_SIZE(s3fwrn5_nci_prop_ops);
|
||||
}
|
||||
|
||||
#define S3FWRN5_RFREG_SECTION_SIZE 252
|
||||
|
||||
int s3fwrn5_nci_rf_configure(struct s3fwrn5_info *info, const char *fw_name)
|
||||
{
|
||||
const struct firmware *fw;
|
||||
struct nci_prop_fw_cfg_cmd fw_cfg;
|
||||
struct nci_prop_set_rfreg_cmd set_rfreg;
|
||||
struct nci_prop_stop_rfreg_cmd stop_rfreg;
|
||||
u32 checksum;
|
||||
int i, len;
|
||||
int ret;
|
||||
|
||||
ret = request_firmware(&fw, fw_name, &info->ndev->nfc_dev->dev);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
/* Compute rfreg checksum */
|
||||
|
||||
checksum = 0;
|
||||
for (i = 0; i < fw->size; i += 4)
|
||||
checksum += *((u32 *)(fw->data+i));
|
||||
|
||||
/* Set default clock configuration for external crystal */
|
||||
|
||||
fw_cfg.clk_type = 0x01;
|
||||
fw_cfg.clk_speed = 0xff;
|
||||
fw_cfg.clk_req = 0xff;
|
||||
ret = nci_prop_cmd(info->ndev, NCI_PROP_FW_CFG,
|
||||
sizeof(fw_cfg), (__u8 *)&fw_cfg);
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
|
||||
/* Start rfreg configuration */
|
||||
|
||||
dev_info(&info->ndev->nfc_dev->dev,
|
||||
"rfreg configuration update: %s\n", fw_name);
|
||||
|
||||
ret = nci_prop_cmd(info->ndev, NCI_PROP_START_RFREG, 0, NULL);
|
||||
if (ret < 0) {
|
||||
dev_err(&info->ndev->nfc_dev->dev,
|
||||
"Unable to start rfreg update\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* Update rfreg */
|
||||
|
||||
set_rfreg.index = 0;
|
||||
for (i = 0; i < fw->size; i += S3FWRN5_RFREG_SECTION_SIZE) {
|
||||
len = (fw->size - i < S3FWRN5_RFREG_SECTION_SIZE) ?
|
||||
(fw->size - i) : S3FWRN5_RFREG_SECTION_SIZE;
|
||||
memcpy(set_rfreg.data, fw->data+i, len);
|
||||
ret = nci_prop_cmd(info->ndev, NCI_PROP_SET_RFREG,
|
||||
len+1, (__u8 *)&set_rfreg);
|
||||
if (ret < 0) {
|
||||
dev_err(&info->ndev->nfc_dev->dev,
|
||||
"rfreg update error (code=%d)\n", ret);
|
||||
goto out;
|
||||
}
|
||||
set_rfreg.index++;
|
||||
}
|
||||
|
||||
/* Finish rfreg configuration */
|
||||
|
||||
stop_rfreg.checksum = checksum & 0xffff;
|
||||
ret = nci_prop_cmd(info->ndev, NCI_PROP_STOP_RFREG,
|
||||
sizeof(stop_rfreg), (__u8 *)&stop_rfreg);
|
||||
if (ret < 0) {
|
||||
dev_err(&info->ndev->nfc_dev->dev,
|
||||
"Unable to stop rfreg update\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
dev_info(&info->ndev->nfc_dev->dev,
|
||||
"rfreg configuration update: success\n");
|
||||
out:
|
||||
release_firmware(fw);
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -0,0 +1,89 @@
|
|||
/*
|
||||
* 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_NCI_H_
|
||||
#define __LOCAL_S3FWRN5_NCI_H_
|
||||
|
||||
#include "s3fwrn5.h"
|
||||
|
||||
#define NCI_PROP_AGAIN 0x01
|
||||
|
||||
#define NCI_PROP_GET_RFREG 0x21
|
||||
#define NCI_PROP_SET_RFREG 0x22
|
||||
|
||||
struct nci_prop_set_rfreg_cmd {
|
||||
__u8 index;
|
||||
__u8 data[252];
|
||||
};
|
||||
|
||||
struct nci_prop_set_rfreg_rsp {
|
||||
__u8 status;
|
||||
};
|
||||
|
||||
#define NCI_PROP_GET_RFREG_VER 0x24
|
||||
|
||||
struct nci_prop_get_rfreg_ver_rsp {
|
||||
__u8 status;
|
||||
__u8 data[8];
|
||||
};
|
||||
|
||||
#define NCI_PROP_SET_RFREG_VER 0x25
|
||||
|
||||
struct nci_prop_set_rfreg_ver_cmd {
|
||||
__u8 data[8];
|
||||
};
|
||||
|
||||
struct nci_prop_set_rfreg_ver_rsp {
|
||||
__u8 status;
|
||||
};
|
||||
|
||||
#define NCI_PROP_START_RFREG 0x26
|
||||
|
||||
struct nci_prop_start_rfreg_rsp {
|
||||
__u8 status;
|
||||
};
|
||||
|
||||
#define NCI_PROP_STOP_RFREG 0x27
|
||||
|
||||
struct nci_prop_stop_rfreg_cmd {
|
||||
__u16 checksum;
|
||||
};
|
||||
|
||||
struct nci_prop_stop_rfreg_rsp {
|
||||
__u8 status;
|
||||
};
|
||||
|
||||
#define NCI_PROP_FW_CFG 0x28
|
||||
|
||||
struct nci_prop_fw_cfg_cmd {
|
||||
__u8 clk_type;
|
||||
__u8 clk_speed;
|
||||
__u8 clk_req;
|
||||
};
|
||||
|
||||
struct nci_prop_fw_cfg_rsp {
|
||||
__u8 status;
|
||||
};
|
||||
|
||||
#define NCI_PROP_WR_RESET 0x2f
|
||||
|
||||
void s3fwrn5_nci_get_prop_ops(struct nci_prop_ops **ops, size_t *n);
|
||||
int s3fwrn5_nci_rf_configure(struct s3fwrn5_info *info, const char *fw_name);
|
||||
|
||||
#endif /* __LOCAL_S3FWRN5_NCI_H_ */
|
||||
|
|
@ -0,0 +1,99 @@
|
|||
/*
|
||||
* 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_ */
|
||||
Loading…
Reference in New Issue