This callback is for initialization of BT chipset through USB channel
Some of chipset does not allow sending a patch or config files through
HCI VS channel at early stage as well as they don't support to send
USB patch files to other channel except USB bulk path.
Signed-off-by: Ben Young Tae Kim <ytkim@xxxxxxxxxxxxxxxx>
---
drivers/bluetooth/btusb.c | 9 +++++++++
include/net/bluetooth/hci_core.h | 1 +
2 files changed, 10 insertions(+)
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index b876888..102020d 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -887,6 +887,15 @@ static int btusb_open(struct hci_dev *hdev)
BT_DBG("%s", hdev->name);
+ /* Patching USB firmware files prior to starting any URBs of HCI path
+ * It is more safe to use USB bulk channel for downloading USB patch
+ */
+ if (hdev->setup_on_usb) {
+ err = hdev->setup_on_usb(hdev);
+ if (err <0)
+ return err;
+ }
+
err = usb_autopm_get_interface(data->intf);
if (err < 0)
return err;
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 52863c3..1938582 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -373,6 +373,7 @@ struct hci_dev {
int (*close)(struct hci_dev *hdev);
int (*flush)(struct hci_dev *hdev);
int (*setup)(struct hci_dev *hdev);
+ int (*setup_on_usb)(struct hci_dev *hdev);
int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
void (*notify)(struct hci_dev *hdev, unsigned int evt);
void (*hw_error)(struct hci_dev *hdev, u8 code);
--
1.8.1.5
--
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