1 // SPDX-License-Identifier: GPL-2.0+
3  * Atheros AR71XX/9XXX USB PHY driver
5  * Copyright (C) 2015-2018 Alban Bedel <albeu@free.fr>
11 #include <linux/phy/phy.h>
22 static int ath79_usb_phy_power_on(struct phy *phy)  in ath79_usb_phy_power_on()  argument
24 	struct ath79_usb_phy *priv = phy_get_drvdata(phy);  in ath79_usb_phy_power_on()
27 	if (priv->no_suspend_override) {  in ath79_usb_phy_power_on()
28 		err = reset_control_assert(priv->no_suspend_override);  in ath79_usb_phy_power_on()
33 	err = reset_control_deassert(priv->reset);  in ath79_usb_phy_power_on()
34 	if (err && priv->no_suspend_override)  in ath79_usb_phy_power_on()
35 		reset_control_deassert(priv->no_suspend_override);  in ath79_usb_phy_power_on()
40 static int ath79_usb_phy_power_off(struct phy *phy)  in ath79_usb_phy_power_off()  argument
42 	struct ath79_usb_phy *priv = phy_get_drvdata(phy);  in ath79_usb_phy_power_off()
45 	err = reset_control_assert(priv->reset);  in ath79_usb_phy_power_off()
49 	if (priv->no_suspend_override) {  in ath79_usb_phy_power_off()
50 		err = reset_control_deassert(priv->no_suspend_override);  in ath79_usb_phy_power_off()
52 			reset_control_deassert(priv->reset);  in ath79_usb_phy_power_off()
67 	struct phy *phy;  in ath79_usb_phy_probe()  local
69 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);  in ath79_usb_phy_probe()
71 		return -ENOMEM;  in ath79_usb_phy_probe()
73 	priv->reset = devm_reset_control_get(&pdev->dev, "phy");  in ath79_usb_phy_probe()
74 	if (IS_ERR(priv->reset))  in ath79_usb_phy_probe()
75 		return PTR_ERR(priv->reset);  in ath79_usb_phy_probe()
77 	priv->no_suspend_override = devm_reset_control_get_optional(  in ath79_usb_phy_probe()
78 		&pdev->dev, "usb-suspend-override");  in ath79_usb_phy_probe()
79 	if (IS_ERR(priv->no_suspend_override))  in ath79_usb_phy_probe()
80 		return PTR_ERR(priv->no_suspend_override);  in ath79_usb_phy_probe()
82 	phy = devm_phy_create(&pdev->dev, NULL, &ath79_usb_phy_ops);  in ath79_usb_phy_probe()
83 	if (IS_ERR(phy))  in ath79_usb_phy_probe()
84 		return PTR_ERR(phy);  in ath79_usb_phy_probe()
86 	phy_set_drvdata(phy, priv);  in ath79_usb_phy_probe()
89 				&pdev->dev, of_phy_simple_xlate));  in ath79_usb_phy_probe()
93 	{ .compatible = "qca,ar7100-usb-phy" },
102 		.name		= "ath79-usb-phy",
107 MODULE_DESCRIPTION("ATH79 USB PHY driver");