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Fri, 19 Apr 2024 22:03:41 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; Fri, 19 Apr 2024 15:03:39 -0700 From: Zijun Hu To: , , CC: , , , , Subject: [PATCH v3 1/2] Bluetooth: qca: Fix BT enable failure for QCA_QCA6390 Date: Sat, 20 Apr 2024 06:03:31 +0800 Message-ID: <1713564212-21725-2-git-send-email-quic_zijuhu@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1713564212-21725-1-git-send-email-quic_zijuhu@quicinc.com> References: <1713449192-25926-1-git-send-email-quic_zijuhu@quicinc.com> <1713564212-21725-1-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: nasanex01b.na.qualcomm.com (10.46.141.250) 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-GUID: Y25BaEwioLMnyveRMTagpciKRhbvcGde X-Proofpoint-ORIG-GUID: Y25BaEwioLMnyveRMTagpciKRhbvcGde X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-04-19_15,2024-04-19_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 spamscore=0 phishscore=0 mlxlogscore=999 priorityscore=1501 adultscore=0 impostorscore=0 suspectscore=0 malwarescore=0 lowpriorityscore=0 bulkscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2404010003 definitions=main-2404190171 Commit 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()") will cause below serious regression issue: BT can't be enabled any more after below steps: cold boot -> enable BT -> disable BT -> BT enable failure if BT reset pin is not configured within DT|ACPI for QCA_QCA6390. The mentioned commit wrongly set quirk HCI_QUIRK_NON_PERSISTENT_SETUP within qca_serdev_probe() for this case and cause this serious issue. Fixed by reverting the mentioned commit for QCA_QCA6390. Fixes: 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()") Reported-by: Wren Turkal Link: https://bugzilla.kernel.org/show_bug.cgi?id=218726 Link: https://lore.kernel.org/linux-bluetooth/ea20bb9b-6b60-47fc-ae42-5eed918ad7b4@quicinc.com/T/#m73d6a71d2f454bb03588c66f3ef7912274d37c6f Signed-off-by: Zijun Hu Tested-by: Wren Turkal Reported-by: Wren Turkal --- drivers/bluetooth/hci_qca.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index 92fa20f5ac7d..0934e74112a6 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -2357,7 +2357,8 @@ static int qca_serdev_probe(struct serdev_device *serdev) if (IS_ERR(qcadev->bt_en)) { dev_warn(&serdev->dev, "failed to acquire enable gpio\n"); power_ctrl_enabled = false; - } + } else if (!qcadev->bt_en && qcadev->btsoc_type == QCA_QCA6390) + power_ctrl_enabled = false; qcadev->susclk = devm_clk_get_optional(&serdev->dev, NULL); if (IS_ERR(qcadev->susclk)) { From patchwork Thu Apr 18 14:06:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zijun Hu X-Patchwork-Id: 789978 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5F03F165FC5 for ; Thu, 18 Apr 2024 14:06:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713449217; cv=none; b=Z5+mRdEORQkAFBWKES0UM3cqUNLclB0mUW1OGPGnL5Kaa/q1H71TdTYCIzOOcUK51S8mtHRQeKiRGOmfQlNZzT8dJ1AUc0B1CHL8dYwmwcETc1zp9N/+lx+smH1+WTNb43DyC+l4jysqrz5N4JCLBt2qKvFCPH6SyTVP/HU1J/0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713449217; c=relaxed/simple; bh=LDmdH5XMFB6FWthdt5JCrGF9gLjwqDqr53dxCLC4hYk=; 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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));