phy: qcom-qmp-ufs: 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.
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20221024090041.19574-10-johan+linaro@kernel.orgSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/phy/qualcomm/phy-qcom-qmp-ufs.c

@@ -983,12 +983,15 @@ static int qmp_ufs_clk_init(struct qmp_ufs *qmp)
 	return devm_clk_bulk_get(dev, num, qmp->clks);
 }
 
-static int qmp_ufs_create(struct qmp_ufs *qmp, struct device_node *np)
+static int qmp_ufs_parse_dt_legacy(struct qmp_ufs *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->serdes = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(qmp->serdes))
+		return PTR_ERR(qmp->serdes);
 
 	/*
 	 * Get memory resources for the PHY:
@@ -1025,16 +1028,6 @@ static int qmp_ufs_create(struct qmp_ufs *qmp, struct device_node *np)
 	if (IS_ERR(qmp->pcs_misc))
 		dev_vdbg(dev, "PHY pcs_misc-reg not used\n");
 
-	generic_phy = devm_phy_create(dev, np, &qcom_qmp_ufs_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;
 }
 
@@ -1056,10 +1049,6 @@ static int qmp_ufs_probe(struct platform_device *pdev)
 	if (!qmp->cfg)
 		return -EINVAL;
 
-	qmp->serdes = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(qmp->serdes))
-		return PTR_ERR(qmp->serdes);
-
 	ret = qmp_ufs_clk_init(qmp);
 	if (ret)
 		return ret;
@@ -1072,10 +1061,19 @@ static int qmp_ufs_probe(struct platform_device *pdev)
 	if (!child)
 		return -EINVAL;
 
-	ret = qmp_ufs_create(qmp, child);
+	ret = qmp_ufs_parse_dt_legacy(qmp, child);
 	if (ret)
 		goto err_node_put;
 
+	qmp->phy = devm_phy_create(dev, child, &qcom_qmp_ufs_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);