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Fri, 16 Feb 2024 00:59:03 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; Thu, 15 Feb 2024 16:58:59 -0800 From: Krishna Kurapati To: Krzysztof Kozlowski , Rob Herring , Bjorn Andersson , Wesley Cheng , Konrad Dybcio , "Greg Kroah-Hartman" , Conor Dooley , Thinh Nguyen , Felipe Balbi , Johan Hovold CC: , , , , , , Krishna Kurapati Subject: [PATCH v15 9/9] usb: dwc3: qcom: Add multiport suspend/resume support for wrapper Date: Fri, 16 Feb 2024 06:27:56 +0530 Message-ID: <20240216005756.762712-10-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240216005756.762712-1-quic_kriskura@quicinc.com> References: <20240216005756.762712-1-quic_kriskura@quicinc.com> Precedence: bulk X-Mailing-List: linux-usb@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-ORIG-GUID: a_fH6bV6e2o_ljH11Qsj70g_Itf53KrR X-Proofpoint-GUID: a_fH6bV6e2o_ljH11Qsj70g_Itf53KrR 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=2024-02-15_24,2024-02-14_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 suspectscore=0 impostorscore=0 adultscore=0 mlxscore=0 mlxlogscore=999 malwarescore=0 spamscore=0 lowpriorityscore=0 priorityscore=1501 phishscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2401310000 definitions=main-2402160006 Power event IRQ stat registers are present for each port connected to controller. Add support for modifying all power event irq stat registers present in wrapper. Signed-off-by: Krishna Kurapati Reviewed-by: Bjorn Andersson Acked-by: Thinh Nguyen --- drivers/usb/dwc3/dwc3-qcom.c | 30 +++++++++++++++++++++++------- 1 file changed, 23 insertions(+), 7 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index 572dc3fdae12..e789745a9468 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) @@ -109,6 +113,13 @@ struct dwc3_qcom { u8 num_ports; }; +static const u32 pwr_evnt_irq_stat_reg_offset[DWC3_MAX_PORTS] = { + 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; @@ -444,9 +455,11 @@ static int dwc3_qcom_suspend(struct dwc3_qcom *qcom, bool wakeup) if (qcom->is_suspended) return 0; - val = readl(qcom->qscratch_base + PWR_EVNT_IRQ_STAT_REG); - if (!(val & PWR_EVNT_LPM_IN_L2_MASK)) - dev_err(qcom->dev, "HS-PHY not in L2\n"); + for (i = 0; i < qcom->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, "Port-%d HS-PHY not in L2\n", i + 1); + } for (i = qcom->num_clocks - 1; i >= 0; i--) clk_disable_unprepare(qcom->clks[i]); @@ -491,9 +504,12 @@ 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 < qcom->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;