From patchwork Wed Jun 21 04:36:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kurapati X-Patchwork-Id: 13286656 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99AACEB64D7 for ; Wed, 21 Jun 2023 04:38:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229910AbjFUEi2 (ORCPT ); Wed, 21 Jun 2023 00:38:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54004 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229888AbjFUEiP (ORCPT ); Wed, 21 Jun 2023 00:38:15 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B0F661BC6; Tue, 20 Jun 2023 21:37:52 -0700 (PDT) Received: from pps.filterd (m0279864.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 35L4TxTY005049; Wed, 21 Jun 2023 04:37:34 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=Ycq0ulk+eGA+DDCEsY8F2xZM9Op6QappdLItiBImGLs=; b=aIgAN2UMFqcSN7/HyCOlwEfJW4TIP8cyPTCp4Q4wcZ57tDfBMy69QsflKGPyXEfbZ29v CEhbWBl8umuVMzQ4PF9rcbr/biM7wriMFmryeLQo87/97zj0eOf3QR77l/vj2a8m8IdX wY1uUED651Tl4pyBU9nhW3Rd/MMMDisMF9IaI75JD03p4SrgW3VLbtUP4RiPQVbVoD2l +JZcrRCSKMYdI/XpzzQZ8QdLksx7hAomTC3nCuKer+oelo+vkA1FagXWKoefmOWf5r3v +I8nWYbDh9kMyTn2rVCu8MIrY2GDarUBgjHcJwRL3XhYUZL9hQEfXHuqkdF6ik9xJwx3 OA== Received: from nalasppmta03.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3rb1dtk56e-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 21 Jun 2023 04:37:33 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 35L4bWHQ007761 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 21 Jun 2023 04:37:32 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 15.2.986.42; Tue, 20 Jun 2023 21:37:26 -0700 From: Krishna Kurapati To: Thinh Nguyen , Greg Kroah-Hartman , Philipp Zabel , "Andy Gross" , Bjorn Andersson , "Konrad Dybcio" , Rob Herring , Krzysztof Kozlowski , Felipe Balbi , Wesley Cheng , Johan Hovold CC: , , , , , , , , , , Krishna Kurapati Subject: [PATCH v9 07/10] usb: dwc3: qcom: Add multiport suspend/resume support for wrapper Date: Wed, 21 Jun 2023 10:06:25 +0530 Message-ID: <20230621043628.21485-8-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230621043628.21485-1-quic_kriskura@quicinc.com> References: <20230621043628.21485-1-quic_kriskura@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) 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-ORIG-GUID: L_i49YyFxmLMzUzXZYNj3K0dBRPLgRzB X-Proofpoint-GUID: L_i49YyFxmLMzUzXZYNj3K0dBRPLgRzB X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-06-21_03,2023-06-16_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 malwarescore=0 bulkscore=0 impostorscore=0 lowpriorityscore=0 phishscore=0 adultscore=0 suspectscore=0 mlxscore=0 mlxlogscore=965 clxscore=1015 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2306210039 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org QCOM SoC SA8295P's tertiary quad port controller supports 2 HS+SS ports and 2 HS only ports. Add support for configuring PWR_EVENT_IRQ's for all the ports during suspend/resume. Signed-off-by: Krishna Kurapati --- drivers/usb/dwc3/dwc3-qcom.c | 48 +++++++++++++++++++++++++++++++----- 1 file changed, 42 insertions(+), 6 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index 3ab48a6925fe..699485a85233 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -37,7 +37,11 @@ #define PIPE3_PHYSTATUS_SW BIT(3) #define PIPE_UTMI_CLK_DIS BIT(8) -#define PWR_EVNT_IRQ_STAT_REG 0x58 +#define PWR_EVNT_IRQ1_STAT_REG 0x58 +#define PWR_EVNT_IRQ2_STAT_REG 0x1dc +#define PWR_EVNT_IRQ3_STAT_REG 0x228 +#define PWR_EVNT_IRQ4_STAT_REG 0x238 + #define PWR_EVNT_LPM_IN_L2_MASK BIT(4) #define PWR_EVNT_LPM_OUT_L2_MASK BIT(5) @@ -93,6 +97,13 @@ struct dwc3_qcom { struct icc_path *icc_path_apps; }; +static u32 pwr_evnt_irq_stat_reg_offset[4] = { + PWR_EVNT_IRQ1_STAT_REG, + PWR_EVNT_IRQ2_STAT_REG, + PWR_EVNT_IRQ3_STAT_REG, + PWR_EVNT_IRQ4_STAT_REG, +}; + static inline void dwc3_qcom_setbits(void __iomem *base, u32 offset, u32 val) { u32 reg; @@ -417,17 +428,37 @@ static void dwc3_qcom_enable_interrupts(struct dwc3_qcom *qcom) dwc3_qcom_enable_wakeup_irq(qcom->ss_phy_irq[0], 0); } +static u8 dwc3_qcom_get_port_info(struct dwc3_qcom *qcom) +{ + struct dwc3 __maybe_unused *dwc = platform_get_drvdata(qcom->dwc3); + + if (dwc3_qcom_is_host(qcom)) + return dwc->num_usb2_ports; + + /* + * If not in host mode, either dwc was not probed + * or we are in device mode, either case checking for + * only first pwr event irq would suffice. + */ + + return 1; +} + static int dwc3_qcom_suspend(struct dwc3_qcom *qcom, bool wakeup) { u32 val; int i, ret; + u8 num_ports; if (qcom->is_suspended) return 0; - val = readl(qcom->qscratch_base + PWR_EVNT_IRQ_STAT_REG); - if (!(val & PWR_EVNT_LPM_IN_L2_MASK)) + num_ports = dwc3_qcom_get_port_info(qcom); + for (i = 0; i < num_ports; i++) { + val = readl(qcom->qscratch_base + pwr_evnt_irq_stat_reg_offset[i]); + if (!(val & PWR_EVNT_LPM_IN_L2_MASK)) dev_err(qcom->dev, "HS-PHY not in L2\n"); + } for (i = qcom->num_clocks - 1; i >= 0; i--) clk_disable_unprepare(qcom->clks[i]); @@ -452,12 +483,14 @@ static int dwc3_qcom_suspend(struct dwc3_qcom *qcom, bool wakeup) static int dwc3_qcom_resume(struct dwc3_qcom *qcom, bool wakeup) { + int num_ports; int ret; int i; if (!qcom->is_suspended) return 0; + num_ports = dwc3_qcom_get_port_info(qcom); if (dwc3_qcom_is_host(qcom) && wakeup) dwc3_qcom_disable_interrupts(qcom); @@ -474,9 +507,12 @@ static int dwc3_qcom_resume(struct dwc3_qcom *qcom, bool wakeup) if (ret) dev_warn(qcom->dev, "failed to enable interconnect: %d\n", ret); - /* Clear existing events from PHY related to L2 in/out */ - dwc3_qcom_setbits(qcom->qscratch_base, PWR_EVNT_IRQ_STAT_REG, - PWR_EVNT_LPM_IN_L2_MASK | PWR_EVNT_LPM_OUT_L2_MASK); + for (i = 0; i < num_ports; i++) { + /* Clear existing events from PHY related to L2 in/out */ + dwc3_qcom_setbits(qcom->qscratch_base, + pwr_evnt_irq_stat_reg_offset[i], + PWR_EVNT_LPM_IN_L2_MASK | PWR_EVNT_LPM_OUT_L2_MASK); + } qcom->is_suspended = false;