1 // SPDX-License-Identifier: GPL-2.0-only
16 #include <linux/phy/phy.h>
18 /* PHY registers */
84 static int qcom_apq8064_sata_phy_init(struct phy *generic_phy)  in qcom_apq8064_sata_phy_init()
86 	struct qcom_apq8064_sata_phy *phy = phy_get_drvdata(generic_phy);  in qcom_apq8064_sata_phy_init()  local
87 	void __iomem *base = phy->mmio;  in qcom_apq8064_sata_phy_init()
90 	/* SATA phy initialization */  in qcom_apq8064_sata_phy_init()
137 		dev_err(phy->dev, "poll timeout UNIPHY_PLL_STATUS\n");  in qcom_apq8064_sata_phy_init()
144 		dev_err(phy->dev, "poll timeout SATA_PHY_TX_IMCAL_STAT\n");  in qcom_apq8064_sata_phy_init()
151 		dev_err(phy->dev, "poll timeout SATA_PHY_RX_IMCAL_STAT\n");  in qcom_apq8064_sata_phy_init()
155 	/* SATA phy calibrated successfully, power up to functional mode */  in qcom_apq8064_sata_phy_init()
179 static int qcom_apq8064_sata_phy_exit(struct phy *generic_phy)  in qcom_apq8064_sata_phy_exit()
181 	struct qcom_apq8064_sata_phy *phy = phy_get_drvdata(generic_phy);  in qcom_apq8064_sata_phy_exit()  local
182 	void __iomem *base = phy->mmio;  in qcom_apq8064_sata_phy_exit()
184 	/* Power down PHY */  in qcom_apq8064_sata_phy_exit()
202 	struct qcom_apq8064_sata_phy *phy;  in qcom_apq8064_sata_phy_probe()  local
203 	struct device *dev = &pdev->dev;  in qcom_apq8064_sata_phy_probe()
205 	struct phy *generic_phy;  in qcom_apq8064_sata_phy_probe()
208 	phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);  in qcom_apq8064_sata_phy_probe()
209 	if (!phy)  in qcom_apq8064_sata_phy_probe()
210 		return -ENOMEM;  in qcom_apq8064_sata_phy_probe()
212 	phy->mmio = devm_platform_ioremap_resource(pdev, 0);  in qcom_apq8064_sata_phy_probe()
213 	if (IS_ERR(phy->mmio))  in qcom_apq8064_sata_phy_probe()
214 		return PTR_ERR(phy->mmio);  in qcom_apq8064_sata_phy_probe()
218 		dev_err(dev, "%s: failed to create phy\n", __func__);  in qcom_apq8064_sata_phy_probe()
222 	phy->dev = dev;  in qcom_apq8064_sata_phy_probe()
223 	phy_set_drvdata(generic_phy, phy);  in qcom_apq8064_sata_phy_probe()
224 	platform_set_drvdata(pdev, phy);  in qcom_apq8064_sata_phy_probe()
226 	phy->cfg_clk = devm_clk_get(dev, "cfg");  in qcom_apq8064_sata_phy_probe()
227 	if (IS_ERR(phy->cfg_clk)) {  in qcom_apq8064_sata_phy_probe()
228 		dev_err(dev, "Failed to get sata cfg clock\n");  in qcom_apq8064_sata_phy_probe()
229 		return PTR_ERR(phy->cfg_clk);  in qcom_apq8064_sata_phy_probe()
232 	ret = clk_prepare_enable(phy->cfg_clk);  in qcom_apq8064_sata_phy_probe()
238 		clk_disable_unprepare(phy->cfg_clk);  in qcom_apq8064_sata_phy_probe()
239 		dev_err(dev, "%s: failed to register phy\n", __func__);  in qcom_apq8064_sata_phy_probe()
248 	struct qcom_apq8064_sata_phy *phy = platform_get_drvdata(pdev);  in qcom_apq8064_sata_phy_remove()  local
250 	clk_disable_unprepare(phy->cfg_clk);  in qcom_apq8064_sata_phy_remove()
254 	{ .compatible = "qcom,apq8064-sata-phy" },
263 		.name	= "qcom-apq8064-sata-phy",
269 MODULE_DESCRIPTION("QCOM apq8064 SATA PHY driver");