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NFC: Implement HCI DEP send and receive data 

And implement the corresponding hooks for pn544.

Signed-off-by: Arron Wang <arron.wang@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Arron Wang 2012-09-27 17:32:58 +08:00 committed by Samuel Ortiz
parent c40d17401f
commit e81076235b
3 changed files with 51 additions and 7 deletions
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36
drivers/nfc/pn544_hci.c
View File

@ -900,7 +900,7 @@ static void pn544_hci_data_exchange_cb(void *context, struct sk_buff *skb,
* <= 0: driver handled the data exchange
* 1: driver doesn't especially handle, please do standard processing
*/
static int pn544_hci_data_exchange(struct nfc_hci_dev *hdev,
static int pn544_hci_im_transceive(struct nfc_hci_dev *hdev,
struct nfc_target *target,
struct sk_buff *skb, data_exchange_cb_t cb,
void *cb_context)
@ -953,11 +953,26 @@ static int pn544_hci_data_exchange(struct nfc_hci_dev *hdev,
return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
PN544_JEWEL_RAW_CMD, skb->data,
skb->len, cb, cb_context);
case PN544_RF_READER_NFCIP1_INITIATOR_GATE:
*skb_push(skb, 1) = 0;
return nfc_hci_send_event(hdev, target->hci_reader_gate,
PN544_HCI_EVT_SND_DATA, skb->data,
skb->len);
default:
return 1;
}
}
static int pn544_hci_tm_send(struct nfc_hci_dev *hdev, struct sk_buff *skb)
{
/* Set default false for multiple information chaining */
*skb_push(skb, 1) = 0;
return nfc_hci_send_event(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
PN544_HCI_EVT_SND_DATA, skb->data, skb->len);
}
static int pn544_hci_check_presence(struct nfc_hci_dev *hdev,
struct nfc_target *target)
{
@ -996,6 +1011,22 @@ void pn544_hci_event_received(struct nfc_hci_dev *hdev, u8 gate, u8 event,
nfc_hci_send_event(hdev, gate,
NFC_HCI_EVT_END_OPERATION, NULL, 0);
break;
case PN544_HCI_EVT_RCV_DATA:
if (skb->len < 2) {
r = -EPROTO;
goto exit;
}
if (skb->data[0] != 0) {
pr_debug("data0 %d", skb->data[0]);
r = -EPROTO;
goto exit;
}
skb_pull(skb, 2);
nfc_tm_data_received(hdev->ndev, skb);
return;
default:
break;
}
@ -1014,7 +1045,8 @@ static struct nfc_hci_ops pn544_hci_ops = {
.dep_link_down = pn544_hci_dep_link_down,
.target_from_gate = pn544_hci_target_from_gate,
.complete_target_discovered = pn544_hci_complete_target_discovered,
.data_exchange = pn544_hci_data_exchange,
.im_transceive = pn544_hci_im_transceive,
.tm_send = pn544_hci_tm_send,
.check_presence = pn544_hci_check_presence,
.event_received = pn544_hci_event_received,
};

3
include/net/nfc/hci.h
View File

@ -45,9 +45,10 @@ struct nfc_hci_ops {
struct nfc_target *target);
int (*complete_target_discovered) (struct nfc_hci_dev *hdev, u8 gate,
struct nfc_target *target);
int (*data_exchange) (struct nfc_hci_dev *hdev,
int (*im_transceive) (struct nfc_hci_dev *hdev,
struct nfc_target *target, struct sk_buff *skb,
data_exchange_cb_t cb, void *cb_context);
int (*tm_send)(struct nfc_hci_dev *hdev, struct sk_buff *skb);
int (*check_presence)(struct nfc_hci_dev *hdev,
struct nfc_target *target);
void (*event_received)(struct nfc_hci_dev *hdev, u8 gate, u8 event,

19
net/nfc/hci/core.c
View File

@ -616,8 +616,8 @@ static int hci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
switch (target->hci_reader_gate) {
case NFC_HCI_RF_READER_A_GATE:
case NFC_HCI_RF_READER_B_GATE:
if (hdev->ops->data_exchange) {
r = hdev->ops->data_exchange(hdev, target, skb, cb,
if (hdev->ops->im_transceive) {
r = hdev->ops->im_transceive(hdev, target, skb, cb,
cb_context);
if (r <= 0) /* handled */
break;
@ -634,8 +634,8 @@ static int hci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
skb->len, hci_transceive_cb, hdev);
break;
default:
if (hdev->ops->data_exchange) {
r = hdev->ops->data_exchange(hdev, target, skb, cb,
if (hdev->ops->im_transceive) {
r = hdev->ops->im_transceive(hdev, target, skb, cb,
cb_context);
if (r == 1)
r = -ENOTSUPP;
@ -650,6 +650,16 @@ static int hci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
return r;
}
int hci_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb)
{
struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
if (hdev->ops->tm_send)
return hdev->ops->tm_send(hdev, skb);
else
return -ENOTSUPP;
}
static int hci_check_presence(struct nfc_dev *nfc_dev,
struct nfc_target *target)
{
@ -758,6 +768,7 @@ static struct nfc_ops hci_nfc_ops = {
.activate_target = hci_activate_target,
.deactivate_target = hci_deactivate_target,
.im_transceive = hci_transceive,
.tm_send = hci_tm_send,
.check_presence = hci_check_presence,
};