From: Ganapathi Bhat <gbhat@xxxxxxxxxxx>
The new callback is used to prepare the device before HCI becomes
ready. One can use this to download firmware if the download process
doesn't use HCI commands. Also recv_for_prepare callback is
introduced for receiving data from devices during prepare phase.
Signed-off-by: Ganapathi Bhat <gbhat@xxxxxxxxxxx>
Signed-off-by: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
---
drivers/bluetooth/hci_ldisc.c | 11 ++++++++++-
drivers/bluetooth/hci_uart.h | 3 +++
2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
index dda9739..d7184dc 100644
--- a/drivers/bluetooth/hci_ldisc.c
+++ b/drivers/bluetooth/hci_ldisc.c
@@ -551,8 +551,11 @@ static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data,
if (!hu || tty != hu->tty)
return;
- if (!test_bit(HCI_UART_PROTO_READY, &hu->flags))
+ if (!test_bit(HCI_UART_PROTO_READY, &hu->flags)) {
+ if (hu->proto->recv_for_prepare)
+ hu->proto->recv_for_prepare(hu, data, count);
return;
+ }
/* It does not need a lock here as it is already protected by a mutex in
* tty caller
@@ -639,6 +642,12 @@ static int hci_uart_set_proto(struct hci_uart *hu, int id)
return err;
hu->proto = p;
+ if (p->prepare) {
+ err = p->prepare(hu);
+ if (err)
+ return err;
+ }
+
set_bit(HCI_UART_PROTO_READY, &hu->flags);
err = hci_uart_register_dev(hu);
diff --git a/drivers/bluetooth/hci_uart.h b/drivers/bluetooth/hci_uart.h
index 839bad1..17ba3b4 100644
--- a/drivers/bluetooth/hci_uart.h
+++ b/drivers/bluetooth/hci_uart.h
@@ -67,8 +67,11 @@ struct hci_uart_proto {
int (*close)(struct hci_uart *hu);
int (*flush)(struct hci_uart *hu);
int (*setup)(struct hci_uart *hu);
+ int (*prepare)(struct hci_uart *hu);
int (*set_baudrate)(struct hci_uart *hu, unsigned int speed);
int (*recv)(struct hci_uart *hu, const void *data, int len);
+ int (*recv_for_prepare)(struct hci_uart *hu, const void *data,
+ int len);
int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb);
struct sk_buff *(*dequeue)(struct hci_uart *hu);
};
--
1.8.1.4
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