phy: qcom-qmp-combo: restructure PHY creation

In preparation for supporting devicetree bindings which do not use child
nodes, move the PHY creation to probe() proper and parse the serdes,
dp_com and dp_serdes resources in a dedicated legacy devicetree helper.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20221121085058.31213-5-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Author: jhovold

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

@@ -2471,11 +2471,9 @@ static int phy_dp_clks_register(struct qmp_combo *qmp, struct device_node *np)
 	return devm_add_action_or_reset(qmp->dev, phy_clk_release_provider, np);
 }
 
-static int qmp_combo_create_dp(struct qmp_combo *qmp, struct device_node *np)
+static int qmp_combo_parse_dt_lecacy_dp(struct qmp_combo *qmp, struct device_node *np)
 {
 	struct device *dev = qmp->dev;
-	struct phy *generic_phy;
-	int ret;
 
 	/*
 	 * Get memory resources from the DP child node:
@@ -2496,25 +2494,13 @@ static int qmp_combo_create_dp(struct qmp_combo *qmp, struct device_node *np)
 	if (IS_ERR(qmp->dp_tx2))
 		return PTR_ERR(qmp->dp_tx2);
 
-	generic_phy = devm_phy_create(dev, np, &qmp_combo_dp_phy_ops);
-	if (IS_ERR(generic_phy)) {
-		ret = PTR_ERR(generic_phy);
-		dev_err(dev, "failed to create DP PHY: %d\n", ret);
-		return ret;
-	}
-
-	qmp->dp_phy = generic_phy;
-	phy_set_drvdata(generic_phy, qmp);
-
 	return 0;
 }
 
-static int qmp_combo_create_usb(struct qmp_combo *qmp, struct device_node *np)
+static int qmp_combo_parse_dt_lecacy_usb(struct qmp_combo *qmp, struct device_node *np)
 {
 	const struct qmp_phy_cfg *cfg = qmp->cfg;
 	struct device *dev = qmp->dev;
-	struct phy *generic_phy;
-	int ret;
 
 	/*
 	 * Get memory resources from the USB child node:
@@ -2556,15 +2542,34 @@ static int qmp_combo_create_usb(struct qmp_combo *qmp, struct device_node *np)
 				     "failed to get pipe clock\n");
 	}
 
-	generic_phy = devm_phy_create(dev, np, &qmp_combo_usb_phy_ops);
-	if (IS_ERR(generic_phy)) {
-		ret = PTR_ERR(generic_phy);
-		dev_err(dev, "failed to create USB PHY: %d\n", ret);
+	return 0;
+}
+
+static int qmp_combo_parse_dt_legacy(struct qmp_combo *qmp, struct device_node *usb_np,
+					struct device_node *dp_np)
+{
+	struct platform_device *pdev = to_platform_device(qmp->dev);
+	int ret;
+
+	qmp->serdes = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(qmp->serdes))
+		return PTR_ERR(qmp->serdes);
+
+	qmp->dp_com = devm_platform_ioremap_resource(pdev, 1);
+	if (IS_ERR(qmp->dp_com))
+		return PTR_ERR(qmp->dp_com);
+
+	qmp->dp_serdes = devm_platform_ioremap_resource(pdev, 2);
+	if (IS_ERR(qmp->dp_serdes))
+		return PTR_ERR(qmp->dp_serdes);
+
+	ret = qmp_combo_parse_dt_lecacy_usb(qmp, usb_np);
+	if (ret)
 		return ret;
-	}
 
-	qmp->usb_phy = generic_phy;
-	phy_set_drvdata(generic_phy, qmp);
+	ret = qmp_combo_parse_dt_lecacy_dp(qmp, dp_np);
+	if (ret)
+		return ret;
 
 	return 0;
 }
@@ -2587,18 +2592,6 @@ static int qmp_combo_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);
-
-	qmp->dp_com = devm_platform_ioremap_resource(pdev, 1);
-	if (IS_ERR(qmp->dp_com))
-		return PTR_ERR(qmp->dp_com);
-
-	qmp->dp_serdes = devm_platform_ioremap_resource(pdev, 2);
-	if (IS_ERR(qmp->dp_serdes))
-		return PTR_ERR(qmp->dp_serdes);
-
 	mutex_init(&qmp->phy_mutex);
 
 	ret = qmp_combo_clk_init(qmp);
@@ -2623,6 +2616,10 @@ static int qmp_combo_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
+	ret = qmp_combo_parse_dt_legacy(qmp, usb_np, dp_np);
+	if (ret)
+		goto err_node_put;
+
 	pm_runtime_set_active(dev);
 	ret = devm_pm_runtime_enable(dev);
 	if (ret)
@@ -2633,21 +2630,31 @@ static int qmp_combo_probe(struct platform_device *pdev)
 	 */
 	pm_runtime_forbid(dev);
 
-	ret = qmp_combo_create_usb(qmp, usb_np);
+	ret = phy_pipe_clk_register(qmp, usb_np);
 	if (ret)
 		goto err_node_put;
 
-	ret = phy_pipe_clk_register(qmp, usb_np);
+	ret = phy_dp_clks_register(qmp, dp_np);
 	if (ret)
 		goto err_node_put;
 
-	ret = qmp_combo_create_dp(qmp, dp_np);
-	if (ret)
+	qmp->usb_phy = devm_phy_create(dev, usb_np, &qmp_combo_usb_phy_ops);
+	if (IS_ERR(qmp->usb_phy)) {
+		ret = PTR_ERR(qmp->usb_phy);
+		dev_err(dev, "failed to create USB PHY: %d\n", ret);
 		goto err_node_put;
+	}
 
-	ret = phy_dp_clks_register(qmp, dp_np);
-	if (ret)
+	phy_set_drvdata(qmp->usb_phy, qmp);
+
+	qmp->dp_phy = devm_phy_create(dev, dp_np, &qmp_combo_dp_phy_ops);
+	if (IS_ERR(qmp->dp_phy)) {
+		ret = PTR_ERR(qmp->dp_phy);
+		dev_err(dev, "failed to create DP PHY: %d\n", ret);
 		goto err_node_put;
+	}
+
+	phy_set_drvdata(qmp->dp_phy, qmp);
 
 	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);