1 // SPDX-License-Identifier: GPL-2.0+
3  * Meson8, Meson8b and Meson8m2 HDMI TX PHY.
14 #include <linux/phy/phy.h>
40 static int phy_meson8_hdmi_tx_init(struct phy *phy)  in phy_meson8_hdmi_tx_init()  argument
42 	struct phy_meson8_hdmi_tx_priv *priv = phy_get_drvdata(phy);  in phy_meson8_hdmi_tx_init()
44 	return clk_prepare_enable(priv->tmds_clk);  in phy_meson8_hdmi_tx_init()
47 static int phy_meson8_hdmi_tx_exit(struct phy *phy)  in phy_meson8_hdmi_tx_exit()  argument
49 	struct phy_meson8_hdmi_tx_priv *priv = phy_get_drvdata(phy);  in phy_meson8_hdmi_tx_exit()
51 	clk_disable_unprepare(priv->tmds_clk);  in phy_meson8_hdmi_tx_exit()
56 static int phy_meson8_hdmi_tx_power_on(struct phy *phy)  in phy_meson8_hdmi_tx_power_on()  argument
58 	struct phy_meson8_hdmi_tx_priv *priv = phy_get_drvdata(phy);  in phy_meson8_hdmi_tx_power_on()
62 	if (clk_get_rate(priv->tmds_clk) >= 2970UL * 1000 * 1000)  in phy_meson8_hdmi_tx_power_on()
67 	regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0,  in phy_meson8_hdmi_tx_power_on()
71 	regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL1, 0x0);  in phy_meson8_hdmi_tx_power_on()
75 		regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL1,  in phy_meson8_hdmi_tx_power_on()
80 		regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL1,  in phy_meson8_hdmi_tx_power_on()
88 static int phy_meson8_hdmi_tx_power_off(struct phy *phy)  in phy_meson8_hdmi_tx_power_off()  argument
90 	struct phy_meson8_hdmi_tx_priv *priv = phy_get_drvdata(phy);  in phy_meson8_hdmi_tx_power_off()
92 	regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0,  in phy_meson8_hdmi_tx_power_off()
109 	struct device_node *np = pdev->dev.of_node;  in phy_meson8_hdmi_tx_probe()
113 	struct phy *phy;  in phy_meson8_hdmi_tx_probe()  local
117 		return -EINVAL;  in phy_meson8_hdmi_tx_probe()
119 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);  in phy_meson8_hdmi_tx_probe()
121 		return -ENOMEM;  in phy_meson8_hdmi_tx_probe()
123 	priv->hhi = syscon_node_to_regmap(np->parent);  in phy_meson8_hdmi_tx_probe()
124 	if (IS_ERR(priv->hhi))  in phy_meson8_hdmi_tx_probe()
125 		return PTR_ERR(priv->hhi);  in phy_meson8_hdmi_tx_probe()
127 	priv->tmds_clk = devm_clk_get(&pdev->dev, NULL);  in phy_meson8_hdmi_tx_probe()
128 	if (IS_ERR(priv->tmds_clk))  in phy_meson8_hdmi_tx_probe()
129 		return PTR_ERR(priv->tmds_clk);  in phy_meson8_hdmi_tx_probe()
131 	phy = devm_phy_create(&pdev->dev, np, &phy_meson8_hdmi_tx_ops);  in phy_meson8_hdmi_tx_probe()
132 	if (IS_ERR(phy))  in phy_meson8_hdmi_tx_probe()
133 		return PTR_ERR(phy);  in phy_meson8_hdmi_tx_probe()
135 	phy_set_drvdata(phy, priv);  in phy_meson8_hdmi_tx_probe()
137 	phy_provider = devm_of_phy_provider_register(&pdev->dev,  in phy_meson8_hdmi_tx_probe()
144 	{ .compatible = "amlogic,meson8-hdmi-tx-phy" },
152 		.name		= "phy-meson8-hdmi-tx",
159 MODULE_DESCRIPTION("Meson8, Meson8b and Meson8m2 HDMI TX PHY driver");