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Bluetooth: btusb: fix up firmware download sequence

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[ Upstream commit f645125711 ]

Data RAM on the device have to be powered on before starting to download
the firmware.

Fixes: a1c49c434e ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sean Wang
2020-06-19 19:52:01 +00:00
committed by Greg Kroah-Hartman
parent 7cf5046487
commit 09731750e6
1 changed files with 15 additions and 1 deletions
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16
drivers/bluetooth/btusb.c
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@@ -2826,7 +2826,7 @@ static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
const u8 *fw_ptr; const u8 *fw_ptr;
size_t fw_size; size_t fw_size;
int err, dlen; int err, dlen;
u8 flag; u8 flag, param;
err = request_firmware(&fw, fwname, &hdev->dev); err = request_firmware(&fw, fwname, &hdev->dev);
if (err < 0) { if (err < 0) {
@@ -2834,6 +2834,20 @@ static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
return err; 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_ptr = fw->data;
fw_size = fw->size; fw_size = fw->size;