Commit e240bc36 authored by Christophe Ricard's avatar Christophe Ricard Committed by Samuel Ortiz

NFC: hci: Add load_session HCI operand

load_session allows a CLF to restore the gate <-> pipe table from some
proprietary location.
The main advantage to add this function is to reduce the memory wear by
running pipe creation (and storing) only once.
Signed-off-by: default avatarChristophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent d330905d
......@@ -27,6 +27,7 @@ struct nfc_hci_dev;
struct nfc_hci_ops {
int (*open) (struct nfc_hci_dev *hdev);
void (*close) (struct nfc_hci_dev *hdev);
int (*load_session) (struct nfc_hci_dev *hdev);
int (*hci_ready) (struct nfc_hci_dev *hdev);
/*
* xmit must always send the complete buffer before
......
......@@ -380,20 +380,16 @@ static int hci_dev_session_init(struct nfc_hci_dev *hdev)
if (r < 0)
goto disconnect_all;
if (skb->len && skb->len == strlen(hdev->init_data.session_id))
if (memcmp(hdev->init_data.session_id, skb->data,
skb->len) == 0) {
/* TODO ELa: restore gate<->pipe table from
* some TBD location.
* note: it doesn't seem possible to get the chip
* currently open gate/pipe table.
* It is only possible to obtain the supported
* gate list.
*/
if (skb->len && skb->len == strlen(hdev->init_data.session_id) &&
(memcmp(hdev->init_data.session_id, skb->data,
skb->len) == 0) && hdev->ops->load_session) {
/* Restore gate<->pipe table from some proprietary location. */
/* goto exit
* For now, always do a full initialization */
}
r = hdev->ops->load_session(hdev);
if (r < 0)
goto disconnect_all;
} else {
r = nfc_hci_disconnect_all_gates(hdev);
if (r < 0)
......@@ -408,6 +404,7 @@ static int hci_dev_session_init(struct nfc_hci_dev *hdev)
NFC_HCI_ADMIN_SESSION_IDENTITY,
hdev->init_data.session_id,
strlen(hdev->init_data.session_id));
}
if (r == 0)
goto exit;
......
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