diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/bluetooth/btusb.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 8ef4e0f6e0bb..da85cc14f931 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -657,11 +657,33 @@ static void btusb_rtl_cmd_timeout(struct hci_dev *hdev) static void btusb_qca_cmd_timeout(struct hci_dev *hdev) { struct btusb_data *data = hci_get_drvdata(hdev); + struct gpio_desc *reset_gpio = data->reset_gpio; int err; if (++data->cmd_timeout_cnt < 5) return; + if (reset_gpio) { + bt_dev_err(hdev, "Reset qca device via bt_en gpio"); + + /* Toggle the hard reset line. The qca bt device is going to + * yank itself off the USB and then replug. The cleanup is handled + * correctly on the way out (standard USB disconnect), and the new + * device is detected cleanly and bound to the driver again like + * it should be. + */ + if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { + bt_dev_err(hdev, "last reset failed? Not resetting again"); + return; + } + + gpiod_set_value_cansleep(reset_gpio, 0); + msleep(200); + gpiod_set_value_cansleep(reset_gpio, 1); + + return; + } + bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device."); /* This is not an unbalanced PM reference since the device will reset */ err = usb_autopm_get_interface(data->intf); |