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Bluetooth: btusb: Improve stability for QCA devices

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WCN6855 2.1 will reset to apply firmware downloaded, so wait
a moment for reset done then go ahead to improve stability.

Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Zijun Hu 2022-02-14 18:43:39 +08:00 committed by Marcel Holtmann
parent 467e98cda8
commit 599ece4f8f
1 changed files with 8 additions and 0 deletions
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8
drivers/bluetooth/btusb.c
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@ -2999,6 +2999,7 @@ static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
#define QCA_PATCH_UPDATED 0x80
#define QCA_DFU_TIMEOUT 3000
#define QCA_FLAG_MULTI_NVM 0x80
#define QCA_BT_RESET_WAIT_MS 100
#define WCN6855_2_0_RAM_VERSION_GF 0x400c1200
#define WCN6855_2_1_RAM_VERSION_GF 0x400c1211
@ -3325,6 +3326,13 @@ static int btusb_setup_qca(struct hci_dev *hdev)
err = btusb_setup_qca_load_nvm(hdev, &ver, info);
if (err < 0)
return err;
/* WCN6855 2.1 will reset to apply firmware downloaded here, so
* wait ~100ms for reset Done then go ahead, otherwise, it maybe
* cause potential enable failure.
*/
if (info->rom_version == 0x00130201)
msleep(QCA_BT_RESET_WAIT_MS);
}
return 0;