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NFC: Introduce target mode tx ops

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And rename the initiator mode data exchange ops for consistency sake.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Samuel Ortiz 2012-05-16 15:55:48 +02:00
parent f212ad5e99
commit be9ae4ce4e
5 changed files with 34 additions and 30 deletions
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8
drivers/nfc/pn533.c
View file

@ -1691,9 +1691,9 @@ error:
return 0;
}
static int pn533_data_exchange(struct nfc_dev *nfc_dev,
struct nfc_target *target, struct sk_buff *skb,
data_exchange_cb_t cb, void *cb_context)
static int pn533_transceive(struct nfc_dev *nfc_dev,
struct nfc_target *target, struct sk_buff *skb,
data_exchange_cb_t cb, void *cb_context)
{
struct pn533 *dev = nfc_get_drvdata(nfc_dev);
struct pn533_frame *out_frame, *in_frame;
@ -1853,7 +1853,7 @@ struct nfc_ops pn533_nfc_ops = {
.stop_poll = pn533_stop_poll,
.activate_target = pn533_activate_target,
.deactivate_target = pn533_deactivate_target,
.data_exchange = pn533_data_exchange,
.im_transceive = pn533_transceive,
};
static int pn533_probe(struct usb_interface *interface,

3
include/net/nfc/nfc.h
View file

@ -63,9 +63,10 @@ struct nfc_ops {
u32 protocol);
void (*deactivate_target)(struct nfc_dev *dev,
struct nfc_target *target);
int (*data_exchange)(struct nfc_dev *dev, struct nfc_target *target,
int (*im_transceive)(struct nfc_dev *dev, struct nfc_target *target,
struct sk_buff *skb, data_exchange_cb_t cb,
void *cb_context);
int (*tm_send)(struct nfc_dev *dev, struct sk_buff *skb);
int (*check_presence)(struct nfc_dev *dev, struct nfc_target *target);
};

37
net/nfc/core.c
View file

@ -413,27 +413,30 @@ int nfc_data_exchange(struct nfc_dev *dev, u32 target_idx, struct sk_buff *skb,
goto error;
}
if (dev->active_target == NULL) {
if (dev->rf_mode == NFC_RF_INITIATOR && dev->active_target != NULL) {
if (dev->active_target->idx != target_idx) {
rc = -EADDRNOTAVAIL;
kfree_skb(skb);
goto error;
}
if (dev->ops->check_presence)
del_timer_sync(&dev->check_pres_timer);
rc = dev->ops->im_transceive(dev, dev->active_target, skb, cb,
cb_context);
if (!rc && dev->ops->check_presence)
mod_timer(&dev->check_pres_timer, jiffies +
msecs_to_jiffies(NFC_CHECK_PRES_FREQ_MS));
} else if (dev->rf_mode == NFC_RF_TARGET && dev->ops->tm_send != NULL) {
rc = dev->ops->tm_send(dev, skb);
} else {
rc = -ENOTCONN;
kfree_skb(skb);
goto error;
}
if (dev->active_target->idx != target_idx) {
rc = -EADDRNOTAVAIL;
kfree_skb(skb);
goto error;
}
if (dev->ops->check_presence)
del_timer_sync(&dev->check_pres_timer);
rc = dev->ops->data_exchange(dev, dev->active_target, skb, cb,
cb_context);
if (!rc && dev->ops->check_presence)
mod_timer(&dev->check_pres_timer, jiffies +
msecs_to_jiffies(NFC_CHECK_PRES_FREQ_MS));
error:
device_unlock(&dev->dev);
@ -727,7 +730,7 @@ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
struct nfc_dev *dev;
if (!ops->start_poll || !ops->stop_poll || !ops->activate_target ||
!ops->deactivate_target || !ops->data_exchange)
!ops->deactivate_target || !ops->im_transceive)
return NULL;
if (!supported_protocols)

8
net/nfc/hci/core.c
View file

@ -512,9 +512,9 @@ static void hci_deactivate_target(struct nfc_dev *nfc_dev,
{
}
static int hci_data_exchange(struct nfc_dev *nfc_dev, struct nfc_target *target,
struct sk_buff *skb, data_exchange_cb_t cb,
void *cb_context)
static int hci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
struct sk_buff *skb, data_exchange_cb_t cb,
void *cb_context)
{
struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
int r;
@ -580,7 +580,7 @@ static struct nfc_ops hci_nfc_ops = {
.stop_poll = hci_stop_poll,
.activate_target = hci_activate_target,
.deactivate_target = hci_deactivate_target,
.data_exchange = hci_data_exchange,
.im_transceive = hci_transceive,
.check_presence = hci_check_presence,
};

8
net/nfc/nci/core.c
View file

@ -522,9 +522,9 @@ static void nci_deactivate_target(struct nfc_dev *nfc_dev,
}
}
static int nci_data_exchange(struct nfc_dev *nfc_dev, struct nfc_target *target,
struct sk_buff *skb,
data_exchange_cb_t cb, void *cb_context)
static int nci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
struct sk_buff *skb,
data_exchange_cb_t cb, void *cb_context)
{
struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
int rc;
@ -557,7 +557,7 @@ static struct nfc_ops nci_nfc_ops = {
.stop_poll = nci_stop_poll,
.activate_target = nci_activate_target,
.deactivate_target = nci_deactivate_target,
.data_exchange = nci_data_exchange,
.im_transceive = nci_transceive,
};
/* ---- Interface to NCI drivers ---- */