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Merge "Bluetooth: btrtl: HCI reset on close for Realtek BT chip" into odroidg12-4.9.y-android

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This commit is contained in:
Chris
2020-11-09 16:18:09 +09:00
committed by Gerrit Code Review
parent 9676daf339 2157072ee3
commit 2a263e59db
3 changed files with 27 additions and 0 deletions
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20
drivers/bluetooth/btrtl.c
View File

@@ -647,6 +647,26 @@ int btrtl_setup_realtek(struct hci_dev *hdev)
}
EXPORT_SYMBOL_GPL(btrtl_setup_realtek);
int btrtl_shutdown_realtek(struct hci_dev *hdev)
{
struct sk_buff *skb;
int ret;
/* According to the vendor driver, BT must be reset on close to avoid
* firmware crash.
*/
skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
ret = PTR_ERR(skb);
bt_dev_err(hdev, "HCI reset during shutdown failed");
return ret;
}
kfree_skb(skb);
return 0;
}
EXPORT_SYMBOL_GPL(btrtl_shutdown_realtek);
static unsigned int btrtl_convert_baudrate(u32 device_baudrate)
{
switch (device_baudrate) {

6
drivers/bluetooth/btrtl.h
View File

@@ -65,6 +65,7 @@ void btrtl_free(struct btrtl_device_info *btrtl_dev);
int btrtl_download_firmware(struct hci_dev *hdev,
struct btrtl_device_info *btrtl_dev);
int btrtl_setup_realtek(struct hci_dev *hdev);
int btrtl_shutdown_realtek(struct hci_dev *hdev);
int btrtl_get_uart_settings(struct hci_dev *hdev,
struct btrtl_device_info *btrtl_dev,
unsigned int *controller_baudrate,
@@ -93,6 +94,11 @@ static inline int btrtl_setup_realtek(struct hci_dev *hdev)
return -EOPNOTSUPP;
}
static inline int btrtl_shutdown_realtek(struct hci_dev *hdev)
{
return -EOPNOTSUPP;
}
static inline int btrtl_get_uart_settings(struct hci_dev *hdev,
struct btrtl_device_info *btrtl_dev,
unsigned int *controller_baudrate,

1
drivers/bluetooth/btusb.c
View File

@@ -2938,6 +2938,7 @@ static int btusb_probe(struct usb_interface *intf,
#ifdef CONFIG_BT_HCIBTUSB_RTL
if (id->driver_info & BTUSB_REALTEK) {
hdev->setup = btrtl_setup_realtek;
hdev->shutdown = btrtl_shutdown_realtek;
/* Realtek devices lose their updated firmware over suspend,
* but the USB hub doesn't notice any status change.