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-rw-r--r--Documentation/devicetree/bindings/net/nfc/samsung,s3fwrn5.yaml31
-rw-r--r--drivers/nfc/s3fwrn5/Kconfig12
-rw-r--r--drivers/nfc/s3fwrn5/Makefile4
-rw-r--r--drivers/nfc/s3fwrn5/i2c.c117
-rw-r--r--drivers/nfc/s3fwrn5/phy_common.c75
-rw-r--r--drivers/nfc/s3fwrn5/phy_common.h37
-rw-r--r--drivers/nfc/s3fwrn5/uart.c196
7 files changed, 390 insertions, 82 deletions
diff --git a/Documentation/devicetree/bindings/net/nfc/samsung,s3fwrn5.yaml b/Documentation/devicetree/bindings/net/nfc/samsung,s3fwrn5.yaml
index cb0b8a560282..ca3904bf90e0 100644
--- a/Documentation/devicetree/bindings/net/nfc/samsung,s3fwrn5.yaml
+++ b/Documentation/devicetree/bindings/net/nfc/samsung,s3fwrn5.yaml
@@ -12,7 +12,9 @@ maintainers:
properties:
compatible:
- const: samsung,s3fwrn5-i2c
+ enum:
+ - samsung,s3fwrn5-i2c
+ - samsung,s3fwrn82
en-gpios:
maxItems: 1
@@ -47,10 +49,19 @@ additionalProperties: false
required:
- compatible
- en-gpios
- - interrupts
- - reg
- wake-gpios
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: samsung,s3fwrn5-i2c
+ then:
+ required:
+ - interrupts
+ - reg
+
examples:
- |
#include <dt-bindings/gpio/gpio.h>
@@ -71,3 +82,17 @@ examples:
wake-gpios = <&gpj0 2 GPIO_ACTIVE_HIGH>;
};
};
+ # UART example on Raspberry Pi
+ - |
+ uart0 {
+ status = "okay";
+
+ nfc {
+ compatible = "samsung,s3fwrn82";
+
+ en-gpios = <&gpio 20 GPIO_ACTIVE_HIGH>;
+ wake-gpios = <&gpio 16 GPIO_ACTIVE_HIGH>;
+
+ status = "okay";
+ };
+ };
diff --git a/drivers/nfc/s3fwrn5/Kconfig b/drivers/nfc/s3fwrn5/Kconfig
index 3f8b6da58280..8a6b1a79de25 100644
--- a/drivers/nfc/s3fwrn5/Kconfig
+++ b/drivers/nfc/s3fwrn5/Kconfig
@@ -20,3 +20,15 @@ config NFC_S3FWRN5_I2C
To compile this driver as a module, choose m here. The module will
be called s3fwrn5_i2c.ko.
Say N if unsure.
+
+config NFC_S3FWRN82_UART
+ tristate "Samsung S3FWRN82 UART support"
+ depends on NFC_NCI && SERIAL_DEV_BUS
+ select NFC_S3FWRN5
+ help
+ This module adds support for a UART interface to the S3FWRN82 chip.
+ Select this if your platform is using the UART bus.
+
+ To compile this driver as a module, choose m here. The module will
+ be called s3fwrn82_uart.ko.
+ Say N if unsure.
diff --git a/drivers/nfc/s3fwrn5/Makefile b/drivers/nfc/s3fwrn5/Makefile
index d0ffa35f50e8..7da827ac149c 100644
--- a/drivers/nfc/s3fwrn5/Makefile
+++ b/drivers/nfc/s3fwrn5/Makefile
@@ -3,8 +3,10 @@
# Makefile for Samsung S3FWRN5 NFC driver
#
-s3fwrn5-objs = core.o firmware.o nci.o
+s3fwrn5-objs = core.o firmware.o nci.o phy_common.o
s3fwrn5_i2c-objs = i2c.o
+s3fwrn82_uart-objs = uart.o
obj-$(CONFIG_NFC_S3FWRN5) += s3fwrn5.o
obj-$(CONFIG_NFC_S3FWRN5_I2C) += s3fwrn5_i2c.o
+obj-$(CONFIG_NFC_S3FWRN82_UART) += s3fwrn82_uart.o
diff --git a/drivers/nfc/s3fwrn5/i2c.c b/drivers/nfc/s3fwrn5/i2c.c
index ae26594c7302..e1bdde105f24 100644
--- a/drivers/nfc/s3fwrn5/i2c.c
+++ b/drivers/nfc/s3fwrn5/i2c.c
@@ -15,75 +15,30 @@
#include <net/nfc/nfc.h>
-#include "s3fwrn5.h"
+#include "phy_common.h"
#define S3FWRN5_I2C_DRIVER_NAME "s3fwrn5_i2c"
-#define S3FWRN5_EN_WAIT_TIME 150
-
struct s3fwrn5_i2c_phy {
+ struct phy_common common;
struct i2c_client *i2c_dev;
- struct nci_dev *ndev;
-
- int gpio_en;
- 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);
+ mutex_lock(&phy->common.mutex);
- if (phy->mode == mode)
+ if (s3fwrn5_phy_power_ctrl(&phy->common, mode) == false)
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;
+ mutex_unlock(&phy->common.mutex);
}
static int s3fwrn5_i2c_write(void *phy_id, struct sk_buff *skb)
@@ -91,7 +46,7 @@ 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);
+ mutex_lock(&phy->common.mutex);
phy->irq_skip = false;
@@ -102,7 +57,7 @@ static int s3fwrn5_i2c_write(void *phy_id, struct sk_buff *skb)
ret = i2c_master_send(phy->i2c_dev, skb->data, skb->len);
}
- mutex_unlock(&phy->mutex);
+ mutex_unlock(&phy->common.mutex);
if (ret < 0)
return ret;
@@ -114,9 +69,9 @@ static int s3fwrn5_i2c_write(void *phy_id, struct sk_buff *skb)
}
static const struct s3fwrn5_phy_ops i2c_phy_ops = {
- .set_wake = s3fwrn5_i2c_set_wake,
+ .set_wake = s3fwrn5_phy_set_wake,
.set_mode = s3fwrn5_i2c_set_mode,
- .get_mode = s3fwrn5_i2c_get_mode,
+ .get_mode = s3fwrn5_phy_get_mode,
.write = s3fwrn5_i2c_write,
};
@@ -128,7 +83,7 @@ static int s3fwrn5_i2c_read(struct s3fwrn5_i2c_phy *phy)
char hdr[4];
int ret;
- hdr_size = (phy->mode == S3FWRN5_MODE_NCI) ?
+ hdr_size = (phy->common.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)
@@ -137,7 +92,7 @@ static int s3fwrn5_i2c_read(struct s3fwrn5_i2c_phy *phy)
if (ret < hdr_size)
return -EBADMSG;
- data_len = (phy->mode == S3FWRN5_MODE_NCI) ?
+ data_len = (phy->common.mode == S3FWRN5_MODE_NCI) ?
((struct nci_ctrl_hdr *)hdr)->plen :
((struct s3fwrn5_fw_header *)hdr)->len;
@@ -157,24 +112,24 @@ static int s3fwrn5_i2c_read(struct s3fwrn5_i2c_phy *phy)
}
out:
- return s3fwrn5_recv_frame(phy->ndev, skb, phy->mode);
+ return s3fwrn5_recv_frame(phy->common.ndev, skb, phy->common.mode);
}
static irqreturn_t s3fwrn5_i2c_irq_thread_fn(int irq, void *phy_id)
{
struct s3fwrn5_i2c_phy *phy = phy_id;
- if (!phy || !phy->ndev) {
+ if (!phy || !phy->common.ndev) {
WARN_ON_ONCE(1);
return IRQ_NONE;
}
- mutex_lock(&phy->mutex);
+ mutex_lock(&phy->common.mutex);
if (phy->irq_skip)
goto out;
- switch (phy->mode) {
+ switch (phy->common.mode) {
case S3FWRN5_MODE_NCI:
case S3FWRN5_MODE_FW:
s3fwrn5_i2c_read(phy);
@@ -184,7 +139,7 @@ static irqreturn_t s3fwrn5_i2c_irq_thread_fn(int irq, void *phy_id)
}
out:
- mutex_unlock(&phy->mutex);
+ mutex_unlock(&phy->common.mutex);
return IRQ_HANDLED;
}
@@ -197,19 +152,23 @@ static int s3fwrn5_i2c_parse_dt(struct i2c_client *client)
if (!np)
return -ENODEV;
- phy->gpio_en = of_get_named_gpio(np, "en-gpios", 0);
- if (!gpio_is_valid(phy->gpio_en)) {
+ phy->common.gpio_en = of_get_named_gpio(np, "en-gpios", 0);
+ if (!gpio_is_valid(phy->common.gpio_en)) {
/* Support also deprecated property */
- phy->gpio_en = of_get_named_gpio(np, "s3fwrn5,en-gpios", 0);
- if (!gpio_is_valid(phy->gpio_en))
+ phy->common.gpio_en = of_get_named_gpio(np,
+ "s3fwrn5,en-gpios",
+ 0);
+ if (!gpio_is_valid(phy->common.gpio_en))
return -ENODEV;
}
- phy->gpio_fw_wake = of_get_named_gpio(np, "wake-gpios", 0);
- if (!gpio_is_valid(phy->gpio_fw_wake)) {
+ phy->common.gpio_fw_wake = of_get_named_gpio(np, "wake-gpios", 0);
+ if (!gpio_is_valid(phy->common.gpio_fw_wake)) {
/* Support also deprecated property */
- phy->gpio_fw_wake = of_get_named_gpio(np, "s3fwrn5,fw-gpios", 0);
- if (!gpio_is_valid(phy->gpio_fw_wake))
+ phy->common.gpio_fw_wake = of_get_named_gpio(np,
+ "s3fwrn5,fw-gpios",
+ 0);
+ if (!gpio_is_valid(phy->common.gpio_fw_wake))
return -ENODEV;
}
@@ -226,8 +185,8 @@ static int s3fwrn5_i2c_probe(struct i2c_client *client,
if (!phy)
return -ENOMEM;
- mutex_init(&phy->mutex);
- phy->mode = S3FWRN5_MODE_COLD;
+ mutex_init(&phy->common.mutex);
+ phy->common.mode = S3FWRN5_MODE_COLD;
phy->irq_skip = true;
phy->i2c_dev = client;
@@ -237,17 +196,19 @@ static int s3fwrn5_i2c_probe(struct i2c_client *client,
if (ret < 0)
return ret;
- ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->gpio_en,
- GPIOF_OUT_INIT_HIGH, "s3fwrn5_en");
+ ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->common.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");
+ ret = devm_gpio_request_one(&phy->i2c_dev->dev,
+ phy->common.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);
+ ret = s3fwrn5_probe(&phy->common.ndev, phy, &phy->i2c_dev->dev,
+ &i2c_phy_ops);
if (ret < 0)
return ret;
@@ -255,7 +216,7 @@ static int s3fwrn5_i2c_probe(struct i2c_client *client,
s3fwrn5_i2c_irq_thread_fn, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
S3FWRN5_I2C_DRIVER_NAME, phy);
if (ret)
- s3fwrn5_remove(phy->ndev);
+ s3fwrn5_remove(phy->common.ndev);
return ret;
}
@@ -264,7 +225,7 @@ static int s3fwrn5_i2c_remove(struct i2c_client *client)
{
struct s3fwrn5_i2c_phy *phy = i2c_get_clientdata(client);
- s3fwrn5_remove(phy->ndev);
+ s3fwrn5_remove(phy->common.ndev);
return 0;
}
diff --git a/drivers/nfc/s3fwrn5/phy_common.c b/drivers/nfc/s3fwrn5/phy_common.c
new file mode 100644
index 000000000000..497b02b30ae7
--- /dev/null
+++ b/drivers/nfc/s3fwrn5/phy_common.c
@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Link Layer for Samsung S3FWRN5 NCI based Driver
+ *
+ * Copyright (C) 2015 Samsung Electrnoics
+ * Robert Baldyga <r.baldyga@samsung.com>
+ * Copyright (C) 2020 Samsung Electrnoics
+ * Bongsu Jeon <bongsu.jeon@samsung.com>
+ */
+
+#include <linux/gpio.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+
+#include "phy_common.h"
+
+void s3fwrn5_phy_set_wake(void *phy_id, bool wake)
+{
+ struct phy_common *phy = phy_id;
+
+ mutex_lock(&phy->mutex);
+ gpio_set_value(phy->gpio_fw_wake, wake);
+ msleep(S3FWRN5_EN_WAIT_TIME);
+ mutex_unlock(&phy->mutex);
+}
+EXPORT_SYMBOL(s3fwrn5_phy_set_wake);
+
+bool s3fwrn5_phy_power_ctrl(struct phy_common *phy, enum s3fwrn5_mode mode)
+{
+ if (phy->mode == mode)
+ return false;
+
+ 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);
+ }
+
+ return true;
+}
+EXPORT_SYMBOL(s3fwrn5_phy_power_ctrl);
+
+void s3fwrn5_phy_set_mode(void *phy_id, enum s3fwrn5_mode mode)
+{
+ struct phy_common *phy = phy_id;
+
+ mutex_lock(&phy->mutex);
+
+ s3fwrn5_phy_power_ctrl(phy, mode);
+
+ mutex_unlock(&phy->mutex);
+}
+EXPORT_SYMBOL(s3fwrn5_phy_set_mode);
+
+enum s3fwrn5_mode s3fwrn5_phy_get_mode(void *phy_id)
+{
+ struct phy_common *phy = phy_id;
+ enum s3fwrn5_mode mode;
+
+ mutex_lock(&phy->mutex);
+
+ mode = phy->mode;
+
+ mutex_unlock(&phy->mutex);
+
+ return mode;
+}
+EXPORT_SYMBOL(s3fwrn5_phy_get_mode);
diff --git a/drivers/nfc/s3fwrn5/phy_common.h b/drivers/nfc/s3fwrn5/phy_common.h
new file mode 100644
index 000000000000..99749c9294d1
--- /dev/null
+++ b/drivers/nfc/s3fwrn5/phy_common.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * Link Layer for Samsung S3FWRN5 NCI based Driver
+ *
+ * Copyright (C) 2015 Samsung Electrnoics
+ * Robert Baldyga <r.baldyga@samsung.com>
+ * Copyright (C) 2020 Samsung Electrnoics
+ * Bongsu Jeon <bongsu.jeon@samsung.com>
+ */
+
+#ifndef __NFC_S3FWRN5_PHY_COMMON_H
+#define __NFC_S3FWRN5_PHY_COMMON_H
+
+#include <linux/mutex.h>
+#include <net/nfc/nci_core.h>
+
+#include "s3fwrn5.h"
+
+#define S3FWRN5_EN_WAIT_TIME 20
+
+struct phy_common {
+ struct nci_dev *ndev;
+
+ int gpio_en;
+ int gpio_fw_wake;
+
+ struct mutex mutex;
+
+ enum s3fwrn5_mode mode;
+};
+
+void s3fwrn5_phy_set_wake(void *phy_id, bool wake);
+bool s3fwrn5_phy_power_ctrl(struct phy_common *phy, enum s3fwrn5_mode mode);
+void s3fwrn5_phy_set_mode(void *phy_id, enum s3fwrn5_mode mode);
+enum s3fwrn5_mode s3fwrn5_phy_get_mode(void *phy_id);
+
+#endif /* __NFC_S3FWRN5_PHY_COMMON_H */
diff --git a/drivers/nfc/s3fwrn5/uart.c b/drivers/nfc/s3fwrn5/uart.c
new file mode 100644
index 000000000000..82ea35d748a5
--- /dev/null
+++ b/drivers/nfc/s3fwrn5/uart.c
@@ -0,0 +1,196 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * UART Link Layer for S3FWRN82 NCI based Driver
+ *
+ * Copyright (C) 2015 Samsung Electronics
+ * Robert Baldyga <r.baldyga@samsung.com>
+ * Copyright (C) 2020 Samsung Electronics
+ * Bongsu Jeon <bongsu.jeon@samsung.com>
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/nfc.h>
+#include <linux/netdevice.h>
+#include <linux/of.h>
+#include <linux/serdev.h>
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+
+#include "phy_common.h"
+
+#define S3FWRN82_NCI_HEADER 3
+#define S3FWRN82_NCI_IDX 2
+#define NCI_SKB_BUFF_LEN 258
+
+struct s3fwrn82_uart_phy {
+ struct phy_common common;
+ struct serdev_device *ser_dev;
+ struct sk_buff *recv_skb;
+};
+
+static int s3fwrn82_uart_write(void *phy_id, struct sk_buff *out)
+{
+ struct s3fwrn82_uart_phy *phy = phy_id;
+ int err;
+
+ err = serdev_device_write(phy->ser_dev,
+ out->data, out->len,
+ MAX_SCHEDULE_TIMEOUT);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static const struct s3fwrn5_phy_ops uart_phy_ops = {
+ .set_wake = s3fwrn5_phy_set_wake,
+ .set_mode = s3fwrn5_phy_set_mode,
+ .get_mode = s3fwrn5_phy_get_mode,
+ .write = s3fwrn82_uart_write,
+};
+
+static int s3fwrn82_uart_read(struct serdev_device *serdev,
+ const unsigned char *data,
+ size_t count)
+{
+ struct s3fwrn82_uart_phy *phy = serdev_device_get_drvdata(serdev);
+ size_t i;
+
+ for (i = 0; i < count; i++) {
+ skb_put_u8(phy->recv_skb, *data++);
+
+ if (phy->recv_skb->len < S3FWRN82_NCI_HEADER)
+ continue;
+
+ if ((phy->recv_skb->len - S3FWRN82_NCI_HEADER)
+ < phy->recv_skb->data[S3FWRN82_NCI_IDX])
+ continue;
+
+ s3fwrn5_recv_frame(phy->common.ndev, phy->recv_skb,
+ phy->common.mode);
+ phy->recv_skb = alloc_skb(NCI_SKB_BUFF_LEN, GFP_KERNEL);
+ if (!phy->recv_skb)
+ return 0;
+ }
+
+ return i;
+}
+
+static const struct serdev_device_ops s3fwrn82_serdev_ops = {
+ .receive_buf = s3fwrn82_uart_read,
+ .write_wakeup = serdev_device_write_wakeup,
+};
+
+static const struct of_device_id s3fwrn82_uart_of_match[] = {
+ { .compatible = "samsung,s3fwrn82", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, s3fwrn82_uart_of_match);
+
+static int s3fwrn82_uart_parse_dt(struct serdev_device *serdev)
+{
+ struct s3fwrn82_uart_phy *phy = serdev_device_get_drvdata(serdev);
+ struct device_node *np = serdev->dev.of_node;
+
+ if (!np)
+ return -ENODEV;
+
+ phy->common.gpio_en = of_get_named_gpio(np, "en-gpios", 0);
+ if (!gpio_is_valid(phy->common.gpio_en))
+ return -ENODEV;
+
+ phy->common.gpio_fw_wake = of_get_named_gpio(np, "wake-gpios", 0);
+ if (!gpio_is_valid(phy->common.gpio_fw_wake))
+ return -ENODEV;
+
+ return 0;
+}
+
+static int s3fwrn82_uart_probe(struct serdev_device *serdev)
+{
+ struct s3fwrn82_uart_phy *phy;
+ int ret = -ENOMEM;
+
+ phy = devm_kzalloc(&serdev->dev, sizeof(*phy), GFP_KERNEL);
+ if (!phy)
+ goto err_exit;
+
+ phy->recv_skb = alloc_skb(NCI_SKB_BUFF_LEN, GFP_KERNEL);
+ if (!phy->recv_skb)
+ goto err_exit;
+
+ mutex_init(&phy->common.mutex);
+ phy->common.mode = S3FWRN5_MODE_COLD;
+
+ phy->ser_dev = serdev;
+ serdev_device_set_drvdata(serdev, phy);
+ serdev_device_set_client_ops(serdev, &s3fwrn82_serdev_ops);
+ ret = serdev_device_open(serdev);
+ if (ret) {
+ dev_err(&serdev->dev, "Unable to open device\n");
+ goto err_skb;
+ }
+
+ ret = serdev_device_set_baudrate(serdev, 115200);
+ if (ret != 115200) {
+ ret = -EINVAL;
+ goto err_serdev;
+ }
+
+ serdev_device_set_flow_control(serdev, false);
+
+ ret = s3fwrn82_uart_parse_dt(serdev);
+ if (ret < 0)
+ goto err_serdev;
+
+ ret = devm_gpio_request_one(&phy->ser_dev->dev, phy->common.gpio_en,
+ GPIOF_OUT_INIT_HIGH, "s3fwrn82_en");
+ if (ret < 0)
+ goto err_serdev;
+
+ ret = devm_gpio_request_one(&phy->ser_dev->dev,
+ phy->common.gpio_fw_wake,
+ GPIOF_OUT_INIT_LOW, "s3fwrn82_fw_wake");
+ if (ret < 0)
+ goto err_serdev;
+
+ ret = s3fwrn5_probe(&phy->common.ndev, phy, &phy->ser_dev->dev,
+ &uart_phy_ops);
+ if (ret < 0)
+ goto err_serdev;
+
+ return ret;
+
+err_serdev:
+ serdev_device_close(serdev);
+err_skb:
+ kfree_skb(phy->recv_skb);
+err_exit:
+ return ret;
+}
+
+static void s3fwrn82_uart_remove(struct serdev_device *serdev)
+{
+ struct s3fwrn82_uart_phy *phy = serdev_device_get_drvdata(serdev);
+
+ s3fwrn5_remove(phy->common.ndev);
+ serdev_device_close(serdev);
+ kfree_skb(phy->recv_skb);
+}
+
+static struct serdev_device_driver s3fwrn82_uart_driver = {
+ .probe = s3fwrn82_uart_probe,
+ .remove = s3fwrn82_uart_remove,
+ .driver = {
+ .name = "s3fwrn82_uart",
+ .of_match_table = s3fwrn82_uart_of_match,
+ },
+};
+
+module_serdev_device_driver(s3fwrn82_uart_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("UART driver for Samsung NFC");
+MODULE_AUTHOR("Bongsu Jeon <bongsu.jeon@samsung.com>");
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-16 23:20:44 +0000