linux-kernel - [PATCH v5 12/16] phy: qcom-qmp-pcie: restructure PHY creation

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Message-Id: <20221105145939.20318-13-johan+linaro@kernel.org>
Date:   Sat,  5 Nov 2022 15:59:35 +0100
From:   Johan Hovold <johan+linaro@...nel.org>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Johan Hovold <johan+linaro@...nel.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Subject: [PATCH v5 12/16] phy: qcom-qmp-pcie: restructure PHY creation

In preparation for supporting devicetree bindings which do not use a
child node, move the PHY creation to probe() proper and parse the serdes
resource in what is now the legacy devicetree helper.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 36 +++++++++++-------------
 1 file changed, 17 insertions(+), 19 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
index 09999d5b5268..8af84ff755ab 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
@@ -2147,14 +2147,15 @@ static int phy_pipe_clk_register(struct qmp_pcie *qmp, struct device_node *np)
 	return devm_add_action_or_reset(qmp->dev, phy_clk_release_provider, np);
 }
 
-static int qmp_pcie_create(struct qmp_pcie *qmp, struct device_node *np)
+static int qmp_pcie_parse_dt_legacy(struct qmp_pcie *qmp, struct device_node *np)
 {
+	struct platform_device *pdev = to_platform_device(qmp->dev);
 	const struct qmp_phy_cfg *cfg = qmp->cfg;
 	struct device *dev = qmp->dev;
-	struct phy *generic_phy;
-	int ret;
 
-	qmp->mode = PHY_MODE_PCIE_RC;
+	qmp->serdes = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(qmp->serdes))
+		return PTR_ERR(qmp->serdes);
 
 	/*
 	 * Get memory resources for the PHY:
@@ -2209,16 +2210,6 @@ static int qmp_pcie_create(struct qmp_pcie *qmp, struct device_node *np)
 				     "failed to get pipe clock\n");
 	}
 
-	generic_phy = devm_phy_create(dev, np, &qmp_pcie_phy_ops);
-	if (IS_ERR(generic_phy)) {
-		ret = PTR_ERR(generic_phy);
-		dev_err(dev, "failed to create PHY: %d\n", ret);
-		return ret;
-	}
-
-	qmp->phy = generic_phy;
-	phy_set_drvdata(generic_phy, qmp);
-
 	return 0;
 }
 
@@ -2243,10 +2234,6 @@ static int qmp_pcie_probe(struct platform_device *pdev)
 	WARN_ON_ONCE(!qmp->cfg->pwrdn_ctrl);
 	WARN_ON_ONCE(!qmp->cfg->phy_status);
 
-	qmp->serdes = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(qmp->serdes))
-		return PTR_ERR(qmp->serdes);
-
 	ret = qmp_pcie_clk_init(qmp);
 	if (ret)
 		return ret;
@@ -2263,7 +2250,7 @@ static int qmp_pcie_probe(struct platform_device *pdev)
 	if (!child)
 		return -EINVAL;
 
-	ret = qmp_pcie_create(qmp, child);
+	ret = qmp_pcie_parse_dt_legacy(qmp, child);
 	if (ret)
 		goto err_node_put;
 
@@ -2271,6 +2258,17 @@ static int qmp_pcie_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_node_put;
 
+	qmp->mode = PHY_MODE_PCIE_RC;
+
+	qmp->phy = devm_phy_create(dev, child, &qmp_pcie_phy_ops);
+	if (IS_ERR(qmp->phy)) {
+		ret = PTR_ERR(qmp->phy);
+		dev_err(dev, "failed to create PHY: %d\n", ret);
+		goto err_node_put;
+	}
+
+	phy_set_drvdata(qmp->phy, qmp);
+
 	of_node_put(child);
 
 	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
-- 
2.37.4