1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * userspace-consumer.c
20 #include <linux/regulator/userspace-consumer.h>
39 	return sprintf(buf, "%s\n", data->name);  in name_show()
47 	if (data->enabled)  in state_show()
73 	mutex_lock(&data->lock);  in state_store()
74 	if (enabled != data->enabled) {  in state_store()
76 			ret = regulator_bulk_enable(data->num_supplies,  in state_store()
77 						    data->supplies);  in state_store()
79 			ret = regulator_bulk_disable(data->num_supplies,  in state_store()
80 						     data->supplies);  in state_store()
83 			data->enabled = enabled;  in state_store()
87 	mutex_unlock(&data->lock);  in state_store()
107 	if (attr == &dev_attr_name.attr && !data->name)  in attr_visible()
110 	return attr->mode;  in attr_visible()
125 	pdata = dev_get_platdata(&pdev->dev);  in regulator_userspace_consumer_probe()
127 		if (!pdev->dev.of_node)  in regulator_userspace_consumer_probe()
128 			return -EINVAL;  in regulator_userspace_consumer_probe()
133 		pdata->no_autoswitch = true;  in regulator_userspace_consumer_probe()
134 		pdata->num_supplies = 1;  in regulator_userspace_consumer_probe()
135 		pdata->supplies = devm_kzalloc(&pdev->dev, sizeof(*pdata->supplies), GFP_KERNEL);  in regulator_userspace_consumer_probe()
136 		if (!pdata->supplies)  in regulator_userspace_consumer_probe()
137 			return -ENOMEM;  in regulator_userspace_consumer_probe()
138 		pdata->supplies[0].supply = "vout";  in regulator_userspace_consumer_probe()
141 	if (pdata->num_supplies < 1) {  in regulator_userspace_consumer_probe()
142 		dev_err(&pdev->dev, "At least one supply required\n");  in regulator_userspace_consumer_probe()
143 		return -EINVAL;  in regulator_userspace_consumer_probe()
146 	drvdata = devm_kzalloc(&pdev->dev,  in regulator_userspace_consumer_probe()
150 		return -ENOMEM;  in regulator_userspace_consumer_probe()
152 	drvdata->name = pdata->name;  in regulator_userspace_consumer_probe()
153 	drvdata->num_supplies = pdata->num_supplies;  in regulator_userspace_consumer_probe()
154 	drvdata->supplies = pdata->supplies;  in regulator_userspace_consumer_probe()
155 	drvdata->no_autoswitch = pdata->no_autoswitch;  in regulator_userspace_consumer_probe()
157 	mutex_init(&drvdata->lock);  in regulator_userspace_consumer_probe()
159 	ret = devm_regulator_bulk_get_exclusive(&pdev->dev, drvdata->num_supplies,  in regulator_userspace_consumer_probe()
160 						drvdata->supplies);  in regulator_userspace_consumer_probe()
162 		return dev_err_probe(&pdev->dev, ret, "Failed to get supplies\n");  in regulator_userspace_consumer_probe()
166 	ret = sysfs_create_group(&pdev->dev.kobj, &attr_group);  in regulator_userspace_consumer_probe()
170 	if (pdata->init_on && !pdata->no_autoswitch) {  in regulator_userspace_consumer_probe()
171 		ret = regulator_bulk_enable(drvdata->num_supplies,  in regulator_userspace_consumer_probe()
172 					    drvdata->supplies);  in regulator_userspace_consumer_probe()
174 			dev_err(&pdev->dev,  in regulator_userspace_consumer_probe()
180 	ret = regulator_is_enabled(pdata->supplies[0].consumer);  in regulator_userspace_consumer_probe()
182 		dev_err(&pdev->dev, "Failed to get regulator status\n");  in regulator_userspace_consumer_probe()
185 	drvdata->enabled = !!ret;  in regulator_userspace_consumer_probe()
190 	sysfs_remove_group(&pdev->dev.kobj, &attr_group);  in regulator_userspace_consumer_probe()
199 	sysfs_remove_group(&pdev->dev.kobj, &attr_group);  in regulator_userspace_consumer_remove()
201 	if (data->enabled && !data->no_autoswitch)  in regulator_userspace_consumer_remove()
202 		regulator_bulk_disable(data->num_supplies, data->supplies);  in regulator_userspace_consumer_remove()
206 	{ .compatible = "regulator-output", },
215 		.name		= "reg-userspace-consumer",