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Diffstat (limited to 'drivers/nfc/st21nfcb')
-rw-r--r--drivers/nfc/st21nfcb/i2c.c67
-rw-r--r--drivers/nfc/st21nfcb/ndlc.c6
-rw-r--r--drivers/nfc/st21nfcb/ndlc.h4
-rw-r--r--drivers/nfc/st21nfcb/st21nfcb.c27
-rw-r--r--drivers/nfc/st21nfcb/st21nfcb.h2
5 files changed, 39 insertions, 67 deletions
diff --git a/drivers/nfc/st21nfcb/i2c.c b/drivers/nfc/st21nfcb/i2c.c
index 8af880ead5db..c5d2427a3db2 100644
--- a/drivers/nfc/st21nfcb/i2c.c
+++ b/drivers/nfc/st21nfcb/i2c.c
@@ -17,24 +17,16 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-#include <linux/crc-ccitt.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/of_irq.h>
#include <linux/of_gpio.h>
-#include <linux/miscdevice.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/nfc.h>
-#include <linux/firmware.h>
-#include <linux/unaligned/access_ok.h>
#include <linux/platform_data/st21nfcb.h>
-#include <net/nfc/nci.h>
-#include <net/nfc/llc.h>
-#include <net/nfc/nfc.h>
-
#include "ndlc.h"
#define DRIVER_DESC "NCI NFC driver for ST21NFCB"
@@ -63,12 +55,6 @@ struct st21nfcb_i2c_phy {
unsigned int irq_polarity;
int powered;
-
- /*
- * < 0 if hardware error occured (e.g. i2c err)
- * and prevents normal operation.
- */
- int hard_fault;
};
#define I2C_DUMP_SKB(info, skb) \
@@ -122,8 +108,8 @@ static int st21nfcb_nci_i2c_write(void *phy_id, struct sk_buff *skb)
I2C_DUMP_SKB("st21nfcb_nci_i2c_write", skb);
- if (phy->hard_fault != 0)
- return phy->hard_fault;
+ if (phy->ndlc->hard_fault != 0)
+ return phy->ndlc->hard_fault;
r = i2c_master_send(client, skb->data, skb->len);
if (r == -EREMOTEIO) { /* Retry, chip was in standby */
@@ -168,11 +154,11 @@ static int st21nfcb_nci_i2c_read(struct st21nfcb_i2c_phy *phy,
if (r == -EREMOTEIO) { /* Retry, chip was in standby */
usleep_range(1000, 4000);
r = i2c_master_recv(client, buf, ST21NFCB_NCI_I2C_MIN_SIZE);
- } else if (r != ST21NFCB_NCI_I2C_MIN_SIZE) {
- nfc_err(&client->dev, "cannot read ndlc & nci header\n");
- return -EREMOTEIO;
}
+ if (r != ST21NFCB_NCI_I2C_MIN_SIZE)
+ return -EREMOTEIO;
+
len = be16_to_cpu(*(__be16 *) (buf + 2));
if (len > ST21NFCB_NCI_I2C_MAX_SIZE) {
nfc_err(&client->dev, "invalid frame len\n");
@@ -224,7 +210,7 @@ static irqreturn_t st21nfcb_nci_irq_thread_fn(int irq, void *phy_id)
client = phy->i2c_dev;
dev_dbg(&client->dev, "IRQ\n");
- if (phy->hard_fault)
+ if (phy->ndlc->hard_fault)
return IRQ_HANDLED;
if (!phy->powered) {
@@ -233,13 +219,8 @@ static irqreturn_t st21nfcb_nci_irq_thread_fn(int irq, void *phy_id)
}
r = st21nfcb_nci_i2c_read(phy, &skb);
- if (r == -EREMOTEIO) {
- phy->hard_fault = r;
- ndlc_recv(phy->ndlc, NULL);
- return IRQ_HANDLED;
- } else if (r == -ENOMEM || r == -EBADMSG) {
+ if (r == -EREMOTEIO || r == -ENOMEM || r == -EBADMSG)
return IRQ_HANDLED;
- }
ndlc_recv(phy->ndlc, skb);
@@ -273,25 +254,18 @@ static int st21nfcb_nci_i2c_of_request_resources(struct i2c_client *client)
}
/* GPIO request and configuration */
- r = devm_gpio_request(&client->dev, gpio, "clf_reset");
+ r = devm_gpio_request_one(&client->dev, gpio,
+ GPIOF_OUT_INIT_HIGH, "clf_reset");
if (r) {
nfc_err(&client->dev, "Failed to request reset pin\n");
return -ENODEV;
}
-
- r = gpio_direction_output(gpio, 1);
- if (r) {
- nfc_err(&client->dev,
- "Failed to set reset pin direction as output\n");
- return -ENODEV;
- }
phy->gpio_reset = gpio;
/* IRQ */
r = irq_of_parse_and_map(pp, 0);
if (r < 0) {
- nfc_err(&client->dev,
- "Unable to get irq, error: %d\n", r);
+ nfc_err(&client->dev, "Unable to get irq, error: %d\n", r);
return r;
}
@@ -325,32 +299,20 @@ static int st21nfcb_nci_i2c_request_resources(struct i2c_client *client)
phy->gpio_reset = pdata->gpio_reset;
phy->irq_polarity = pdata->irq_polarity;
- r = devm_gpio_request(&client->dev, phy->gpio_irq, "wake_up");
+ r = devm_gpio_request_one(&client->dev, phy->gpio_irq,
+ GPIOF_IN, "clf_irq");
if (r) {
pr_err("%s : gpio_request failed\n", __FILE__);
return -ENODEV;
}
- r = gpio_direction_input(phy->gpio_irq);
- if (r) {
- pr_err("%s : gpio_direction_input failed\n", __FILE__);
- return -ENODEV;
- }
-
- r = devm_gpio_request(&client->dev,
- phy->gpio_reset, "clf_reset");
+ r = devm_gpio_request_one(&client->dev,
+ phy->gpio_reset, GPIOF_OUT_INIT_HIGH, "clf_reset");
if (r) {
pr_err("%s : reset gpio_request failed\n", __FILE__);
return -ENODEV;
}
- r = gpio_direction_output(phy->gpio_reset, 1);
- if (r) {
- pr_err("%s : reset gpio_direction_output failed\n",
- __FILE__);
- return -ENODEV;
- }
-
/* IRQ */
irq = gpio_to_irq(phy->gpio_irq);
if (irq < 0) {
@@ -448,7 +410,6 @@ static struct i2c_driver st21nfcb_nci_i2c_driver = {
.driver = {
.owner = THIS_MODULE,
.name = ST21NFCB_NCI_I2C_DRIVER_NAME,
- .owner = THIS_MODULE,
.of_match_table = of_match_ptr(of_st21nfcb_i2c_match),
},
.probe = st21nfcb_nci_i2c_probe,
diff --git a/drivers/nfc/st21nfcb/ndlc.c b/drivers/nfc/st21nfcb/ndlc.c
index 83c97c36112b..e7bff8921d11 100644
--- a/drivers/nfc/st21nfcb/ndlc.c
+++ b/drivers/nfc/st21nfcb/ndlc.c
@@ -112,6 +112,10 @@ static void llt_ndlc_send_queue(struct llt_ndlc *ndlc)
ndlc->t1_active = true;
mod_timer(&ndlc->t1_timer, time_sent +
msecs_to_jiffies(NDLC_TIMER_T1));
+ /* start timer t2 for chip availability */
+ ndlc->t2_active = true;
+ mod_timer(&ndlc->t2_timer, time_sent +
+ msecs_to_jiffies(NDLC_TIMER_T2));
}
}
@@ -207,7 +211,7 @@ static void llt_ndlc_sm_work(struct work_struct *work)
ndlc->t2_active = false;
ndlc->t1_active = false;
del_timer_sync(&ndlc->t1_timer);
-
+ del_timer_sync(&ndlc->t2_timer);
ndlc_close(ndlc);
ndlc->hard_fault = -EREMOTEIO;
}
diff --git a/drivers/nfc/st21nfcb/ndlc.h b/drivers/nfc/st21nfcb/ndlc.h
index c30a2f0faa5f..b28140e0cd78 100644
--- a/drivers/nfc/st21nfcb/ndlc.h
+++ b/drivers/nfc/st21nfcb/ndlc.h
@@ -42,6 +42,10 @@ struct llt_ndlc {
struct device *dev;
+ /*
+ * < 0 if hardware error occured
+ * and prevents normal operation.
+ */
int hard_fault;
};
diff --git a/drivers/nfc/st21nfcb/st21nfcb.c b/drivers/nfc/st21nfcb/st21nfcb.c
index 4d95863e3063..ea63d5877831 100644
--- a/drivers/nfc/st21nfcb/st21nfcb.c
+++ b/drivers/nfc/st21nfcb/st21nfcb.c
@@ -22,10 +22,11 @@
#include <net/nfc/nci_core.h>
#include "st21nfcb.h"
-#include "ndlc.h"
#define DRIVER_DESC "NCI NFC driver for ST21NFCB"
+#define ST21NFCB_NCI1_X_PROPRIETARY_ISO15693 0x83
+
static int st21nfcb_nci_open(struct nci_dev *ndev)
{
struct st21nfcb_nci_info *info = nci_get_drvdata(ndev);
@@ -65,10 +66,18 @@ static int st21nfcb_nci_send(struct nci_dev *ndev, struct sk_buff *skb)
return ndlc_send(info->ndlc, skb);
}
+static __u32 st21nfcb_nci_get_rfprotocol(struct nci_dev *ndev,
+ __u8 rf_protocol)
+{
+ return rf_protocol == ST21NFCB_NCI1_X_PROPRIETARY_ISO15693 ?
+ NFC_PROTO_ISO15693_MASK : 0;
+}
+
static struct nci_ops st21nfcb_nci_ops = {
.open = st21nfcb_nci_open,
.close = st21nfcb_nci_close,
.send = st21nfcb_nci_send,
+ .get_rfprotocol = st21nfcb_nci_get_rfprotocol,
};
int st21nfcb_nci_probe(struct llt_ndlc *ndlc, int phy_headroom,
@@ -88,29 +97,25 @@ int st21nfcb_nci_probe(struct llt_ndlc *ndlc, int phy_headroom,
| NFC_PROTO_FELICA_MASK
| NFC_PROTO_ISO14443_MASK
| NFC_PROTO_ISO14443_B_MASK
+ | NFC_PROTO_ISO15693_MASK
| NFC_PROTO_NFC_DEP_MASK;
ndlc->ndev = nci_allocate_device(&st21nfcb_nci_ops, protocols,
phy_headroom, phy_tailroom);
if (!ndlc->ndev) {
pr_err("Cannot allocate nfc ndev\n");
- r = -ENOMEM;
- goto err_alloc_ndev;
+ return -ENOMEM;
}
info->ndlc = ndlc;
nci_set_drvdata(ndlc->ndev, info);
r = nci_register_device(ndlc->ndev);
- if (r)
- goto err_regdev;
-
- return r;
-err_regdev:
- nci_free_device(ndlc->ndev);
+ if (r) {
+ pr_err("Cannot register nfc device to nci core\n");
+ nci_free_device(ndlc->ndev);
+ }
-err_alloc_ndev:
- kfree(info);
return r;
}
EXPORT_SYMBOL_GPL(st21nfcb_nci_probe);
diff --git a/drivers/nfc/st21nfcb/st21nfcb.h b/drivers/nfc/st21nfcb/st21nfcb.h
index 4bbbebb9f34d..ea58a56ad794 100644
--- a/drivers/nfc/st21nfcb/st21nfcb.h
+++ b/drivers/nfc/st21nfcb/st21nfcb.h
@@ -19,8 +19,6 @@
#ifndef __LOCAL_ST21NFCB_H_
#define __LOCAL_ST21NFCB_H_
-#include <net/nfc/nci_core.h>
-
#include "ndlc.h"
/* Define private flags: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 06:52:09 +0000