1 // SPDX-License-Identifier: GPL-2.0-only
3 // Driver for the regulator based Ethernet Power Sourcing Equipment, without
12 #include <linux/pse-pd/pse.h>
34 	if (priv->admin_state == config->admin_cotrol)  in pse_reg_ethtool_set_config()
37 	switch (config->admin_cotrol) {  in pse_reg_ethtool_set_config()
39 		ret = regulator_enable(priv->ps);  in pse_reg_ethtool_set_config()
42 		ret = regulator_disable(priv->ps);  in pse_reg_ethtool_set_config()
45 		dev_err(pcdev->dev, "Unknown admin state %i\n",  in pse_reg_ethtool_set_config()
46 			config->admin_cotrol);  in pse_reg_ethtool_set_config()
47 		ret = -ENOTSUPP;  in pse_reg_ethtool_set_config()
53 	priv->admin_state = config->admin_cotrol;  in pse_reg_ethtool_set_config()
66 	ret = regulator_is_enabled(priv->ps);  in pse_reg_ethtool_get_status()
71 		status->podl_pw_status = ETHTOOL_PODL_PSE_PW_D_STATUS_DISABLED;  in pse_reg_ethtool_get_status()
73 		status->podl_pw_status =  in pse_reg_ethtool_get_status()
76 	status->podl_admin_state = priv->admin_state;  in pse_reg_ethtool_get_status()
89 	struct device *dev = &pdev->dev;  in pse_reg_probe()
93 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);  in pse_reg_probe()
95 		return -ENOMEM;  in pse_reg_probe()
97 	if (!pdev->dev.of_node)  in pse_reg_probe()
98 		return -ENOENT;  in pse_reg_probe()
100 	priv->ps = devm_regulator_get_exclusive(dev, "pse");  in pse_reg_probe()
101 	if (IS_ERR(priv->ps))  in pse_reg_probe()
102 		return dev_err_probe(dev, PTR_ERR(priv->ps),  in pse_reg_probe()
103 				     "failed to get PSE regulator.\n");  in pse_reg_probe()
107 	ret = regulator_is_enabled(priv->ps);  in pse_reg_probe()
112 		priv->admin_state = ETHTOOL_PODL_PSE_ADMIN_STATE_ENABLED;  in pse_reg_probe()
114 		priv->admin_state = ETHTOOL_PODL_PSE_ADMIN_STATE_DISABLED;  in pse_reg_probe()
116 	priv->pcdev.owner = THIS_MODULE;  in pse_reg_probe()
117 	priv->pcdev.ops = &pse_reg_ops;  in pse_reg_probe()
118 	priv->pcdev.dev = dev;  in pse_reg_probe()
119 	ret = devm_pse_controller_register(dev, &priv->pcdev);  in pse_reg_probe()
121 		dev_err(dev, "failed to register PSE controller (%pe)\n",  in pse_reg_probe()
130 	{ .compatible = "podl-pse-regulator", },
138 		.name		= "PSE regulator",
145 MODULE_DESCRIPTION("regulator based Ethernet Power Sourcing Equipment");
147 MODULE_ALIAS("platform:pse-regulator");