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NFC: Implement HCI DEP send and receive data

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And implement the corresponding hooks for pn544.

Signed-off-by: Arron Wang <[email protected]>
Signed-off-by: Samuel Ortiz <[email protected]>
This commit is contained in:
Arron Wang 2012-09-27 17:32:58 +08:00 • committed by Samuel Ortiz
commit e81076235b
3 changed files with 51 additions and 7 deletions
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36
drivers/nfc/pn544_hci.c
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@ -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,
};