From patchwork Mon Dec 11 12:11:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kurapati X-Patchwork-Id: 13487117 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="pQm72qta" Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 92068D1; Mon, 11 Dec 2023 04:11:52 -0800 (PST) Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 3BBBua0M017947; Mon, 11 Dec 2023 12:11:47 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= qcppdkim1; bh=JeeQVzjwHlmpiqbNj8CxGEhWwh6P3e1lA0qcFGvOn14=; b=pQ m72qtaGTUdLoNa7qOWs71TadYlUqgMqyGbYLKhSoIo1NfF/7IzFFhJTkKM33XYRC c5asYqyGsAdRWN1kIJIYnGzafA5LHeZN7D3cF0sGFfa04Toc8vl0+Ik5DIw0jaxG Ori96cHk0cFp8piqOQnF0NCA4EeTalCGQknnFyjZnd6Bc3Tl+NlUgdlY4H61Nzzc YVdRlIaiP1pbB0adnfAbHqL7mNzDHHGI5uuY9jLmT/pncILkpP3zIVD9StujajRW BIWCA2E3EDUYIcmZX5By6vrd1zZ5JWoivML0ICVeA9OcGVx7V2D42+27g1LRwoet ARA7jO0hEDUDnPt1xiTw== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3uvnuvk7d1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 11 Dec 2023 12:11:47 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3BBCBkIM005870 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 11 Dec 2023 12:11:46 GMT Received: from hu-kriskura-hyd.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Mon, 11 Dec 2023 04:11:41 -0800 From: Krishna Kurapati To: Thinh Nguyen , Greg Kroah-Hartman , Andy Gross , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Wesley Cheng , Johan Hovold , Conor Dooley CC: , , , , , , Krishna Kurapati Subject: [PATCH v3 1/2] dt-bindings: usb: dwc3: Clean up hs_phy_irq in bindings Date: Mon, 11 Dec 2023 17:41:23 +0530 Message-ID: <20231211121124.4194-2-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231211121124.4194-1-quic_kriskura@quicinc.com> References: <20231211121124.4194-1-quic_kriskura@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: -eKA3A1GqCLVlxuxMfGxUUf2UM-XPZO9 X-Proofpoint-ORIG-GUID: -eKA3A1GqCLVlxuxMfGxUUf2UM-XPZO9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_02,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 adultscore=0 malwarescore=0 phishscore=0 mlxscore=0 clxscore=1015 bulkscore=0 impostorscore=0 priorityscore=1501 spamscore=0 lowpriorityscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2312110098 The high speed related interrupts present on QC targets are as follows: dp/dm irq's These IRQ's directly reflect changes on the DP/DM pads of the SoC. These are used as wakeup interrupts only on SoCs with non-QUSB2 targets with exception of SDM670/SDM845/SM6350. qusb2_phy irq SoCs with QUSB2 PHY do not have separate DP/DM IRQs and expose only a single IRQ whose behavior can be modified by the QUSB2PHY_INTR_CTRL register. The required DPSE/DMSE configuration is done in QUSB2PHY_INTR_CTRL register of phy address space. hs_phy_irq This is completely different from the above two and is present on all targets with exception of a few IPQ ones. The interrupt is not enabled by default and its functionality is mutually exclusive of qusb2_phy on QUSB targets and DP/DM on femto phy targets. The DTs of several QUSB2 PHY based SoCs incorrectly define "hs_phy_irq" when they should have been "qusb2_phy_irq". On Femto phy targets, the "hs_phy_irq" mentioned is either the actual "hs_phy_irq" or "pwr_event", neither of which would never be triggered directly are non-functional currently. The implementation tries to clean up this issue by addressing the discrepencies involved and fixing the hs_phy_irq's in respective DT's. Classiffy SoC's into four groups based on whether qusb2_phy interrupt or {dp/dm}_hs_phy_irq is used for wakeup in high speed and whether the SoCs have hs_phy_irq present in them or not. The ss_phy_irq is optional interrupt because there are mutliple SoC's which either support only High Speed or there are multiple controllers within same Soc and the secondary controller is High Speed only capable. This breaks ABI on targets running older kernels, but since the interrupt definitions are given wrong on many targets and to establish proper rules for usage of DWC3 interrupts on Qualcomm platforms, DT binding update is necessary. Signed-off-by: Krishna Kurapati --- .../devicetree/bindings/usb/qcom,dwc3.yaml | 138 ++++++++---------- 1 file changed, 59 insertions(+), 79 deletions(-) diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml index 3ec62027f663..602949d64586 100644 --- a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml @@ -98,12 +98,29 @@ properties: - const: apps-usb interrupts: - minItems: 1 - maxItems: 4 + description: | + Different types of interrupts are used based on HS PHY used on target: + - pwr_event: Used for wakeup based on other power events. + - hs_phY_irq: Apart from DP/DM/QUSB2 PHY interrupts, there is + hs_phy_irq which is not triggered by default and its + functionality is mutually exclusive to that of + {dp/dm}_hs_phy_irq and qusb2_phy_irq. + - qusb2_phy: SoCs with QUSB2 PHY do not have separate DP/DM IRQs and + expose only a single IRQ whose behavior can be modified + by the QUSB2PHY_INTR_CTRL register. The required DPSE/ + DMSE configuration is done in QUSB2PHY_INTR_CTRL register + of PHY address space. + - {dp/dm}_hs_phy_irq: These IRQ's directly reflect changes on the DP/ + DM pads of the SoC. These are used for wakeup + only on SoCs with non-QUSB2 targets with + exception of SDM670/SDM845/SM6350. + - ss_phy_irq: Used for remote wakeup in Super Speed mode of operation. + minItems: 2 + maxItems: 5 interrupt-names: - minItems: 1 - maxItems: 4 + minItems: 2 + maxItems: 5 qcom,select-utmi-as-pipe-clk: description: @@ -359,60 +376,21 @@ allOf: compatible: contains: enum: - - qcom,ipq4019-dwc3 + - qcom,ipq5018-dwc3 - qcom,ipq6018-dwc3 - - qcom,ipq8064-dwc3 - qcom,ipq8074-dwc3 - - qcom,msm8994-dwc3 - - qcom,qcs404-dwc3 - - qcom,sc7180-dwc3 - - qcom,sdm670-dwc3 - - qcom,sdm845-dwc3 - - qcom,sdx55-dwc3 - - qcom,sdx65-dwc3 - - qcom,sdx75-dwc3 - - qcom,sm4250-dwc3 - - qcom,sm6350-dwc3 - - qcom,sm8150-dwc3 - - qcom,sm8250-dwc3 - - qcom,sm8350-dwc3 - - qcom,sm8450-dwc3 - - qcom,sm8550-dwc3 - - qcom,sm8650-dwc3 - then: - properties: - interrupts: - items: - - description: The interrupt that is asserted - when a wakeup event is received on USB2 bus. - - description: The interrupt that is asserted - when a wakeup event is received on USB3 bus. - - description: Wakeup event on DM line. - - description: Wakeup event on DP line. - interrupt-names: - items: - - const: hs_phy_irq - - const: ss_phy_irq - - const: dm_hs_phy_irq - - const: dp_hs_phy_irq - - - if: - properties: - compatible: - contains: - enum: - qcom,msm8953-dwc3 - - qcom,msm8996-dwc3 - qcom,msm8998-dwc3 - - qcom,sm6115-dwc3 - - qcom,sm6125-dwc3 + - qcom,qcm2290-dwc3 then: properties: interrupts: - maxItems: 2 + minItems: 2 + maxItems: 3 interrupt-names: items: - - const: hs_phy_irq + - const: pwr_event + - const: qusb2_phy - const: ss_phy_irq - if: @@ -420,37 +398,21 @@ allOf: compatible: contains: enum: - - qcom,ipq5018-dwc3 - - qcom,ipq5332-dwc3 + - qcom,msm8996-dwc3 + - qcom,qcs404-dwc3 - qcom,sdm660-dwc3 - then: - properties: - interrupts: - minItems: 1 - maxItems: 2 - interrupt-names: - minItems: 1 - items: - - const: hs_phy_irq - - const: ss_phy_irq - - - if: - properties: - compatible: - contains: - enum: - - qcom,sc7280-dwc3 + - qcom,sm6115-dwc3 + - qcom,sm6125-dwc3 then: properties: interrupts: minItems: 3 maxItems: 4 interrupt-names: - minItems: 3 items: + - const: pwr_event - const: hs_phy_irq - - const: dp_hs_phy_irq - - const: dm_hs_phy_irq + - const: qusb2_phy - const: ss_phy_irq - if: @@ -458,10 +420,12 @@ allOf: compatible: contains: enum: + - qcom,ipq5332-dwc3 - qcom,sc8280xp-dwc3 then: properties: interrupts: + minItems: 3 maxItems: 4 interrupt-names: items: @@ -476,15 +440,30 @@ allOf: contains: enum: - qcom,sa8775p-dwc3 + - qcom,sc7180-dwc3 + - qcom,sc7280-dwc3 + - qcom,sdm670-dwc3 + - qcom,sdm845-dwc3 + - qcom,sdx55-dwc3 + - qcom,sdx65-dwc3 + - qcom,sdx75-dwc3 + - qcom,sm6350-dwc3 + - qcom,sm6375-dwc3 + - qcom,sm8150-dwc3 + - qcom,sm8250-dwc3 + - qcom,sm8350-dwc3 + - qcom,sm8450-dwc3 + - qcom,sm8550-dwc3 + - qcom,sm8650-dwc3 then: properties: interrupts: - minItems: 3 - maxItems: 4 + minItems: 4 + maxItems: 5 interrupt-names: - minItems: 3 items: - const: pwr_event + - const: hs_phy_irq - const: dp_hs_phy_irq - const: dm_hs_phy_irq - const: ss_phy_irq @@ -522,12 +501,13 @@ examples: <&gcc GCC_USB30_PRIM_MASTER_CLK>; assigned-clock-rates = <19200000>, <150000000>; - interrupts = , - , + interrupts = , + , + , , - ; - interrupt-names = "hs_phy_irq", "ss_phy_irq", - "dm_hs_phy_irq", "dp_hs_phy_irq"; + ; + interrupt-names = "pwr_event", "hs_phy_irq", + "dp_hs_phy_irq", "dm_hs_phy_irq", "ss_phy_irq"; power-domains = <&gcc USB30_PRIM_GDSC>; From patchwork Mon Dec 11 12:11:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kurapati X-Patchwork-Id: 13487118 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="O2Dgnx5N" Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3A5A7CF; Mon, 11 Dec 2023 04:11:58 -0800 (PST) Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 3BBBuWVl023588; Mon, 11 Dec 2023 12:11:53 GMT DKIM-Signature: v=1; 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Mon, 11 Dec 2023 12:11:52 GMT Received: from hu-kriskura-hyd.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Mon, 11 Dec 2023 04:11:47 -0800 From: Krishna Kurapati To: Thinh Nguyen , Greg Kroah-Hartman , Andy Gross , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Wesley Cheng , Johan Hovold , Conor Dooley CC: , , , , , , Krishna Kurapati Subject: [PATCH v3 2/2] usb: dwc3: qcom: Rename hs_phy_irq to qusb2_phy_irq Date: Mon, 11 Dec 2023 17:41:24 +0530 Message-ID: <20231211121124.4194-3-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231211121124.4194-1-quic_kriskura@quicinc.com> References: <20231211121124.4194-1-quic_kriskura@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 0U5SbUCJBZ6u8knha8K-oE2_sjwNtww8 X-Proofpoint-ORIG-GUID: 0U5SbUCJBZ6u8knha8K-oE2_sjwNtww8 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_01,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 mlxscore=0 bulkscore=0 priorityscore=1501 impostorscore=0 malwarescore=0 adultscore=0 clxscore=1015 lowpriorityscore=0 mlxlogscore=722 phishscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2312110098 For wakeup to work, driver needs to enable interrupts that depict what is happening on the DP/DM lines. On QUSB targets, this is identified by qusb2_phy whereas on SoCs using Femto PHY, separate {dp,dm}_hs_phy_irq's are used instead. The implementation incorrectly names qusb2_phy interrupts as "hs_phy_irq". Clean this up so that driver would be using only qusb2/(dp & dm) for wakeup purposes. For devices running older kernels, this won't break any functionality because the interrupt configurations in QUSB2 PHY based SoCs is done by configuring QUSB2PHY_INTR_CTRL register in PHY address space and it was never armed properly right from the start. Signed-off-by: Krishna Kurapati --- drivers/usb/dwc3/dwc3-qcom.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index fdf6d5d3c2ad..dbd6a5b2b289 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -57,7 +57,7 @@ struct dwc3_acpi_pdata { u32 qscratch_base_offset; u32 qscratch_base_size; u32 dwc3_core_base_size; - int hs_phy_irq_index; + int qusb2_phy_irq_index; int dp_hs_phy_irq_index; int dm_hs_phy_irq_index; int ss_phy_irq_index; @@ -73,7 +73,7 @@ struct dwc3_qcom { int num_clocks; struct reset_control *resets; - int hs_phy_irq; + int qusb2_phy_irq; int dp_hs_phy_irq; int dm_hs_phy_irq; int ss_phy_irq; @@ -372,7 +372,7 @@ static void dwc3_qcom_disable_wakeup_irq(int irq) static void dwc3_qcom_disable_interrupts(struct dwc3_qcom *qcom) { - dwc3_qcom_disable_wakeup_irq(qcom->hs_phy_irq); + dwc3_qcom_disable_wakeup_irq(qcom->qusb2_phy_irq); if (qcom->usb2_speed == USB_SPEED_LOW) { dwc3_qcom_disable_wakeup_irq(qcom->dm_hs_phy_irq); @@ -389,7 +389,7 @@ static void dwc3_qcom_disable_interrupts(struct dwc3_qcom *qcom) static void dwc3_qcom_enable_interrupts(struct dwc3_qcom *qcom) { - dwc3_qcom_enable_wakeup_irq(qcom->hs_phy_irq, 0); + dwc3_qcom_enable_wakeup_irq(qcom->qusb2_phy_irq, 0); /* * Configure DP/DM line interrupts based on the USB2 device attached to @@ -542,19 +542,19 @@ static int dwc3_qcom_setup_irq(struct platform_device *pdev) int irq; int ret; - irq = dwc3_qcom_get_irq(pdev, "hs_phy_irq", - pdata ? pdata->hs_phy_irq_index : -1); + irq = dwc3_qcom_get_irq(pdev, "qusb2_phy", + pdata ? pdata->qusb2_phy_irq_index : -1); if (irq > 0) { /* Keep wakeup interrupts disabled until suspend */ ret = devm_request_threaded_irq(qcom->dev, irq, NULL, qcom_dwc3_resume_irq, IRQF_ONESHOT | IRQF_NO_AUTOEN, - "qcom_dwc3 HS", qcom); + "qcom_dwc3 QUSB2", qcom); if (ret) { - dev_err(qcom->dev, "hs_phy_irq failed: %d\n", ret); + dev_err(qcom->dev, "qusb2_phy_irq failed: %d\n", ret); return ret; } - qcom->hs_phy_irq = irq; + qcom->qusb2_phy_irq = irq; } irq = dwc3_qcom_get_irq(pdev, "dp_hs_phy_irq", @@ -1058,7 +1058,7 @@ static const struct dwc3_acpi_pdata sdm845_acpi_pdata = { .qscratch_base_offset = SDM845_QSCRATCH_BASE_OFFSET, .qscratch_base_size = SDM845_QSCRATCH_SIZE, .dwc3_core_base_size = SDM845_DWC3_CORE_SIZE, - .hs_phy_irq_index = 1, + .qusb2_phy_irq_index = 1, .dp_hs_phy_irq_index = 4, .dm_hs_phy_irq_index = 3, .ss_phy_irq_index = 2 @@ -1068,7 +1068,7 @@ static const struct dwc3_acpi_pdata sdm845_acpi_urs_pdata = { .qscratch_base_offset = SDM845_QSCRATCH_BASE_OFFSET, .qscratch_base_size = SDM845_QSCRATCH_SIZE, .dwc3_core_base_size = SDM845_DWC3_CORE_SIZE, - .hs_phy_irq_index = 1, + .qusb2_phy_irq_index = 1, .dp_hs_phy_irq_index = 4, .dm_hs_phy_irq_index = 3, .ss_phy_irq_index = 2,