diff options
| author | Hao Qin <hao.qin@mediatek.com> | 2024-05-15 16:15:21 -0700 |
|---|---|---|
| committer | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2024-07-14 21:33:27 -0400 |
| commit | 064aee501012eaeeeb40a2acb991598e0a89fac9 (patch) | |
| tree | 4f5f7f07e767300e7476117cbd7333a6c91b1550 /drivers/bluetooth | |
| parent | ccfc8948d7e4d93cab341a99774b24586717d89a (diff) | |
Bluetooth: btusb: mediatek: add MT7922 subsystem reset
Add the support of MT7922 bluetooth subsystem reset that was called the
auto revert to self-recover from the fatal error in the controller like
the host encounters HCI cmd timeout or the controller crashes.
Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Hao Qin <hao.qin@mediatek.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Diffstat (limited to 'drivers/bluetooth')
| -rw-r--r-- | drivers/bluetooth/btusb.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index ddd5ca7596e5..79aefdb3324d 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -3039,7 +3039,16 @@ static int btusb_mtk_subsys_reset(struct hci_dev *hdev, u32 dev_id) u32 val; int err; - if (dev_id == 0x7925) { + if (dev_id == 0x7922) { + btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val); + val |= 0x00002020; + btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, val); + btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, 0x00010001); + btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val); + val |= BIT(0); + btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, val); + msleep(100); + } else if (dev_id == 0x7925) { btusb_mtk_uhw_reg_read(data, MTK_BT_RESET_REG_CONNV3, &val); val |= (1 << 5); btusb_mtk_uhw_reg_write(data, MTK_BT_RESET_REG_CONNV3, val); @@ -3079,6 +3088,9 @@ static int btusb_mtk_subsys_reset(struct hci_dev *hdev, u32 dev_id) if (err < 0) bt_dev_err(hdev, "Reset timeout"); + if (dev_id == 0x7922) + btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF); + btusb_mtk_id_get(data, 0x70010200, &val); if (!val) bt_dev_err(hdev, "Can't get device id, subsys reset fail."); |