1 // SPDX-License-Identifier: GPL-2.0
3  * Amlogic AXG MIPI + PCIE analog PHY driver
8 #include <linux/phy/phy.h>
11 #include <dt-bindings/phy/phy.h>
34 #define		HHI_MIPI_CNTL2_CH_EN(n)		BIT(15 - (n))
38 	struct phy *phy;  member
50 static int phy_axg_mipi_pcie_analog_power_on(struct phy *phy)  in phy_axg_mipi_pcie_analog_power_on()  argument
52 	struct phy_axg_mipi_pcie_analog_priv *priv = phy_get_drvdata(phy);  in phy_axg_mipi_pcie_analog_power_on()
54 	/* MIPI not supported yet */  in phy_axg_mipi_pcie_analog_power_on()
55 	if (priv->mode != PHY_TYPE_PCIE)  in phy_axg_mipi_pcie_analog_power_on()
56 		return -EINVAL;  in phy_axg_mipi_pcie_analog_power_on()
58 	regmap_update_bits(priv->regmap, HHI_MIPI_CNTL0,  in phy_axg_mipi_pcie_analog_power_on()
61 	regmap_update_bits(priv->regmap, HHI_MIPI_CNTL0,  in phy_axg_mipi_pcie_analog_power_on()
66 static int phy_axg_mipi_pcie_analog_power_off(struct phy *phy)  in phy_axg_mipi_pcie_analog_power_off()  argument
68 	struct phy_axg_mipi_pcie_analog_priv *priv = phy_get_drvdata(phy);  in phy_axg_mipi_pcie_analog_power_off()
70 	/* MIPI not supported yet */  in phy_axg_mipi_pcie_analog_power_off()
71 	if (priv->mode != PHY_TYPE_PCIE)  in phy_axg_mipi_pcie_analog_power_off()
72 		return -EINVAL;  in phy_axg_mipi_pcie_analog_power_off()
74 	regmap_update_bits(priv->regmap, HHI_MIPI_CNTL0,  in phy_axg_mipi_pcie_analog_power_off()
76 	regmap_update_bits(priv->regmap, HHI_MIPI_CNTL0,  in phy_axg_mipi_pcie_analog_power_off()
81 static int phy_axg_mipi_pcie_analog_init(struct phy *phy)  in phy_axg_mipi_pcie_analog_init()  argument
86 static int phy_axg_mipi_pcie_analog_exit(struct phy *phy)  in phy_axg_mipi_pcie_analog_exit()  argument
99 static struct phy *phy_axg_mipi_pcie_analog_xlate(struct device *dev,  in phy_axg_mipi_pcie_analog_xlate()
105 	if (args->args_count != 1) {  in phy_axg_mipi_pcie_analog_xlate()
107 		return ERR_PTR(-EINVAL);  in phy_axg_mipi_pcie_analog_xlate()
110 	mode = args->args[0];  in phy_axg_mipi_pcie_analog_xlate()
112 	/* MIPI mode is not supported yet */  in phy_axg_mipi_pcie_analog_xlate()
114 		dev_err(dev, "invalid phy mode select argument\n");  in phy_axg_mipi_pcie_analog_xlate()
115 		return ERR_PTR(-EINVAL);  in phy_axg_mipi_pcie_analog_xlate()
118 	priv->mode = mode;  in phy_axg_mipi_pcie_analog_xlate()
119 	return priv->phy;  in phy_axg_mipi_pcie_analog_xlate()
124 	struct phy_provider *phy;  in phy_axg_mipi_pcie_analog_probe()  local
125 	struct device *dev = &pdev->dev;  in phy_axg_mipi_pcie_analog_probe()
127 	struct device_node *np = dev->of_node;  in phy_axg_mipi_pcie_analog_probe()
135 		return -ENOMEM;  in phy_axg_mipi_pcie_analog_probe()
150 	priv->regmap = map;  in phy_axg_mipi_pcie_analog_probe()
152 	priv->phy = devm_phy_create(dev, np, &phy_axg_mipi_pcie_analog_ops);  in phy_axg_mipi_pcie_analog_probe()
153 	if (IS_ERR(priv->phy)) {  in phy_axg_mipi_pcie_analog_probe()
154 		ret = PTR_ERR(priv->phy);  in phy_axg_mipi_pcie_analog_probe()
155 		if (ret != -EPROBE_DEFER)  in phy_axg_mipi_pcie_analog_probe()
156 			dev_err(dev, "failed to create PHY\n");  in phy_axg_mipi_pcie_analog_probe()
160 	phy_set_drvdata(priv->phy, priv);  in phy_axg_mipi_pcie_analog_probe()
163 	phy = devm_of_phy_provider_register(dev,  in phy_axg_mipi_pcie_analog_probe()
166 	return PTR_ERR_OR_ZERO(phy);  in phy_axg_mipi_pcie_analog_probe()
171 		.compatible = "amlogic,axg-mipi-pcie-analog-phy",
180 		.name = "phy-axg-mipi-pcie-analog",
187 MODULE_DESCRIPTION("Amlogic AXG MIPI + PCIE analog PHY driver");