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Thu, 18 Apr 2024 14:06:45 GMT Received: from zijuhu-gv.qualcomm.com (10.80.80.8) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Thu, 18 Apr 2024 07:06:42 -0700 From: Zijun Hu To: , , CC: , , , , Subject: [PATCH v1 2/2] Bluetooth: qca: Fix BT enable failure for QCA_QCA6390 after disable then warm reboot Date: Thu, 18 Apr 2024 22:06:32 +0800 Message-ID: <1713449192-25926-3-git-send-email-quic_zijuhu@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1713449192-25926-1-git-send-email-quic_zijuhu@quicinc.com> References: <1713449192-25926-1-git-send-email-quic_zijuhu@quicinc.com> Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: k5JlDGo3V6oERkPDoTDsJ6mdhKVAtPdk X-Proofpoint-GUID: k5JlDGo3V6oERkPDoTDsJ6mdhKVAtPdk X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-04-18_12,2024-04-17_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 impostorscore=0 adultscore=0 lowpriorityscore=0 priorityscore=1501 spamscore=0 malwarescore=0 phishscore=0 mlxlogscore=989 mlxscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2404010003 definitions=main-2404180100 From: Zijun Hu Commit 272970be3dab ("Bluetooth: hci_qca: Fix driver shutdown on closed serdev") will cause regression issue for QCA_QCA6390 if BT reset pin is not configured by DT or ACPI, the regression issue is that BT can't be enabled after disable then warm reboot, fixed by correcting conditions for sending the VSC reset controller within qca_serdev_shutdown(). Fixes: 272970be3dab ("Bluetooth: hci_qca: Fix driver shutdown on closed serdev") Reported-by: Wren Turkal Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218726 Signed-off-by: Zijun Hu Tested-by: Wren Turkal --- drivers/bluetooth/hci_qca.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index 160175a23a49..2a47a60ecc25 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -2437,15 +2437,21 @@ static void qca_serdev_shutdown(struct device *dev) struct qca_serdev *qcadev = serdev_device_get_drvdata(serdev); struct hci_uart *hu = &qcadev->serdev_hu; struct hci_dev *hdev = hu->hdev; - struct qca_data *qca = hu->priv; const u8 ibs_wake_cmd[] = { 0xFD }; const u8 edl_reset_soc_cmd[] = { 0x01, 0x00, 0xFC, 0x01, 0x05 }; if (qcadev->btsoc_type == QCA_QCA6390) { - if (test_bit(QCA_BT_OFF, &qca->flags) || - !test_bit(HCI_RUNNING, &hdev->flags)) + if (test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) { + BT_INFO("QCA do not need to send EDL_RESET_REQ"); return; + } + + if (hci_dev_test_flag(hdev, HCI_SETUP)) { + BT_INFO("QCA do not send EDL_RESET_REQ"); + return; + } + BT_INFO("QCA start to send EDL_RESET_REQ"); serdev_device_write_flush(serdev); ret = serdev_device_write_buf(serdev, ibs_wake_cmd, sizeof(ibs_wake_cmd));