summaryrefslogtreecommitdiff
path: root/drivers/bluetooth
diff options
context:
space:
mode:
authorSean Wang <sean.wang@mediatek.com>2020-06-19 19:52:01 +0000
committerMarcel Holtmann <marcel@holtmann.org>2020-06-23 14:35:53 +0200
commitf645125711c80f9651e4a57403d799070c6ad13b (patch)
treec1229a244d7708185003e34682de70c96d70a15d /drivers/bluetooth
parentf9c70bdc279b191da8d60777c627702c06e4a37d (diff)
Bluetooth: btusb: fix up firmware download sequence
Data RAM on the device have to be powered on before starting to download the firmware. Fixes: a1c49c434e15 ("Bluetooth: btusb: Add protocol support for MediaTek MT7668U USB devices") Co-developed-by: Mark Chen <Mark-YW.Chen@mediatek.com> Signed-off-by: Mark Chen <Mark-YW.Chen@mediatek.com> Signed-off-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth')
-rw-r--r--drivers/bluetooth/btusb.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index c7cc8e594166..e42fdd625eb0 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -2934,7 +2934,7 @@ static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
const u8 *fw_ptr;
size_t fw_size;
int err, dlen;
- u8 flag;
+ u8 flag, param;
err = request_firmware(&fw, fwname, &hdev->dev);
if (err < 0) {
@@ -2942,6 +2942,20 @@ static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
return err;
}
+ /* Power on data RAM the firmware relies on. */
+ param = 1;
+ wmt_params.op = BTMTK_WMT_FUNC_CTRL;
+ wmt_params.flag = 3;
+ wmt_params.dlen = sizeof(param);
+ wmt_params.data = &param;
+ wmt_params.status = NULL;
+
+ err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to power on data RAM (%d)", err);
+ return err;
+ }
+
fw_ptr = fw->data;
fw_size = fw->size;