On Donnerstag, 26. August 2021 14:38:43 CEST Yifeng Zhao wrote:

This patch implements a combo phy driver for Rockchip SoCs
with NaNeng IP block. This phy can be used as pcie-phy, usb3-phy,
sata-phy or sgmii-phy.

Signed-off-by: Yifeng Zhao <redacted>
---
[...]
+static int rockchip_combphy_pcie_init(struct rockchip_combphy_priv *priv)
+{
+	int ret = 0;
+
+	if (priv->cfg->combphy_cfg) {
+		ret = priv->cfg->combphy_cfg(priv);
+		if (ret) {
+			dev_err(priv->dev, "failed to init phy for 

pcie\n");

+			return ret;
+		}
+	}
+
+	return ret;
+}
+
+static int rockchip_combphy_usb3_init(struct rockchip_combphy_priv *priv)
+{
+	int ret = 0;
+
+	if (priv->cfg->combphy_cfg) {
+		ret = priv->cfg->combphy_cfg(priv);
+		if (ret) {
+			dev_err(priv->dev, "failed to init phy for 

usb3\n");

+			return ret;
+		}
+	}
+
+	return ret;
+}
+
+static int rockchip_combphy_sata_init(struct rockchip_combphy_priv *priv)
+{
+	int ret = 0;
+
+	if (priv->cfg->combphy_cfg) {
+		ret = priv->cfg->combphy_cfg(priv);
+		if (ret) {
+			dev_err(priv->dev, "failed to init phy for 

sata\n");

+			return ret;
+		}
+	}
+
+	return ret;
+}
+
+static int rockchip_combphy_sgmii_init(struct rockchip_combphy_priv *priv)
+{
+	int ret = 0;
+
+	if (priv->cfg->combphy_cfg) {
+		ret = priv->cfg->combphy_cfg(priv);
+		if (ret) {
+			dev_err(priv->dev, "failed to init phy for 

sgmii\n");

+			return ret;
+		}
+	}
+
+	return ret;
+}
+
+static int rockchip_combphy_set_mode(struct rockchip_combphy_priv *priv)
+{
+	switch (priv->mode) {
+	case PHY_TYPE_PCIE:
+		rockchip_combphy_pcie_init(priv);
+		break;
+	case PHY_TYPE_USB3:
+		rockchip_combphy_usb3_init(priv);
+		break;
+	case PHY_TYPE_SATA:
+		rockchip_combphy_sata_init(priv);
+		break;
+	case PHY_TYPE_SGMII:
+	case PHY_TYPE_QSGMII:
+		return rockchip_combphy_sgmii_init(priv);
+	default:
+		dev_err(priv->dev, "incompatible PHY type\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}

All of the _init functions appear to be the same except for the error
string.

I think it would be better to just have the init done in _set_mode,
and then use the switch case statement to show the right error
message on if (ret).

[...]
+
+static int rockchip_combphy_probe(struct platform_device *pdev)
+{
+	struct phy_provider *phy_provider;
+	struct device *dev = &pdev->dev;
+	struct rockchip_combphy_priv *priv;
+	const struct rockchip_combphy_cfg *phy_cfg;
+	struct resource *res;
+	int ret;
+
+	phy_cfg = of_device_get_match_data(dev);
+	if (!phy_cfg) {
+		dev_err(dev, "No OF match data provided\n");
+		return -EINVAL;
+	}
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	priv->mmio = devm_ioremap_resource(dev, res);

I think devm_platform_get_and_ioremap_resource is preferred here,
using it also means you can get rid of res.

+	if (IS_ERR(priv->mmio)) {
+		ret = PTR_ERR(priv->mmio);
+		return ret;
+	}
+
[...]

Regards,
Nicolas Frattaroli



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