linux-kernel - [PATCH v14 6/9] usb: dwc3: qcom: Add helper function to request wakeup interrupts

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Message-ID: <20240206051825.1038685-7-quic_kriskura@quicinc.com>
Date: Tue, 6 Feb 2024 10:48:22 +0530
From: Krishna Kurapati <quic_kriskura@...cinc.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring
	<robh+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Wesley Cheng
	<quic_wcheng@...cinc.com>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        "Greg
 Kroah-Hartman" <gregkh@...uxfoundation.org>,
        Conor Dooley
	<conor+dt@...nel.org>,
        Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        Felipe Balbi
	<balbi@...nel.org>
CC: <devicetree@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <quic_ppratap@...cinc.com>, <quic_jackp@...cinc.com>,
        Krishna Kurapati
	<quic_kriskura@...cinc.com>
Subject: [PATCH v14 6/9] usb: dwc3: qcom: Add helper function to request wakeup interrupts

The logic for requesting interrupts is duplicated for each interrupt. In
the upcoming patches that introduces support for multiport, it would be
better to clean up the duplication before reading mulitport related
interrupts.

Refactor interrupt setup call by adding a new helper function for
requesting the wakeup interrupts. To simplify implementation, make
the display name same as the interrupt name expected in DT.

Signed-off-by: Krishna Kurapati <quic_kriskura@...cinc.com>
---
 drivers/usb/dwc3/dwc3-qcom.c | 53 ++++++++++++++++--------------------
 1 file changed, 24 insertions(+), 29 deletions(-)

diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index dbd6a5b2b289..08df29584366 100644
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -535,6 +535,22 @@ static int dwc3_qcom_get_irq(struct platform_device *pdev,
 	return ret;
 }
 
+static int dwc3_qcom_request_irq(struct dwc3_qcom *qcom, int irq,
+				 const char *name)
+{
+	int ret;
+
+	/* Keep wakeup interrupts disabled until suspend */
+	ret = devm_request_threaded_irq(qcom->dev, irq, NULL,
+					qcom_dwc3_resume_irq,
+					IRQF_ONESHOT | IRQF_NO_AUTOEN,
+					name, qcom);
+	if (ret)
+		dev_err(qcom->dev, "failed to request irq %s: %d\n", name, ret);
+
+	return ret;
+}
+
 static int dwc3_qcom_setup_irq(struct platform_device *pdev)
 {
 	struct dwc3_qcom *qcom = platform_get_drvdata(pdev);
@@ -545,57 +561,36 @@ static int dwc3_qcom_setup_irq(struct platform_device *pdev)
 	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 QUSB2", qcom);
-		if (ret) {
-			dev_err(qcom->dev, "qusb2_phy_irq failed: %d\n", ret);
+		ret = dwc3_qcom_request_irq(qcom, irq, "hs_phy_irq");
+		if (ret)
 			return ret;
-		}
 		qcom->qusb2_phy_irq = irq;
 	}
 
 	irq = dwc3_qcom_get_irq(pdev, "dp_hs_phy_irq",
 				pdata ? pdata->dp_hs_phy_irq_index : -1);
 	if (irq > 0) {
-		ret = devm_request_threaded_irq(qcom->dev, irq, NULL,
-					qcom_dwc3_resume_irq,
-					IRQF_ONESHOT | IRQF_NO_AUTOEN,
-					"qcom_dwc3 DP_HS", qcom);
-		if (ret) {
-			dev_err(qcom->dev, "dp_hs_phy_irq failed: %d\n", ret);
+		ret = dwc3_qcom_request_irq(qcom, irq, "dp_hs_phy_irq");
+		if (ret)
 			return ret;
-		}
 		qcom->dp_hs_phy_irq = irq;
 	}
 
 	irq = dwc3_qcom_get_irq(pdev, "dm_hs_phy_irq",
 				pdata ? pdata->dm_hs_phy_irq_index : -1);
 	if (irq > 0) {
-		ret = devm_request_threaded_irq(qcom->dev, irq, NULL,
-					qcom_dwc3_resume_irq,
-					IRQF_ONESHOT | IRQF_NO_AUTOEN,
-					"qcom_dwc3 DM_HS", qcom);
-		if (ret) {
-			dev_err(qcom->dev, "dm_hs_phy_irq failed: %d\n", ret);
+		ret = dwc3_qcom_request_irq(qcom, irq, "dm_hs_phy_irq");
+		if (ret)
 			return ret;
-		}
 		qcom->dm_hs_phy_irq = irq;
 	}
 
 	irq = dwc3_qcom_get_irq(pdev, "ss_phy_irq",
 				pdata ? pdata->ss_phy_irq_index : -1);
 	if (irq > 0) {
-		ret = devm_request_threaded_irq(qcom->dev, irq, NULL,
-					qcom_dwc3_resume_irq,
-					IRQF_ONESHOT | IRQF_NO_AUTOEN,
-					"qcom_dwc3 SS", qcom);
-		if (ret) {
-			dev_err(qcom->dev, "ss_phy_irq failed: %d\n", ret);
+		ret = dwc3_qcom_request_irq(qcom, irq, "ss_phy_irq");
+		if (ret)
 			return ret;
-		}
 		qcom->ss_phy_irq = irq;
 	}
 
-- 
2.34.1