1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * userspace-consumer.c
19 #include <linux/regulator/userspace-consumer.h>
26 	bool enabled;  member
37 	return sprintf(buf, "%s\n", data->name);  in reg_show_name()
45 	if (data->enabled)  in reg_show_state()
46 		return sprintf(buf, "enabled\n");  in reg_show_state()
55 	bool enabled;  in reg_set_state()  local
59 	 * sysfs_streq() doesn't need the \n's, but we add them so the strings  in reg_set_state()
62 	if (sysfs_streq(buf, "enabled\n") || sysfs_streq(buf, "1"))  in reg_set_state()
63 		enabled = true;  in reg_set_state()
65 		enabled = false;  in reg_set_state()
71 	mutex_lock(&data->lock);  in reg_set_state()
72 	if (enabled != data->enabled) {  in reg_set_state()
73 		if (enabled)  in reg_set_state()
74 			ret = regulator_bulk_enable(data->num_supplies,  in reg_set_state()
75 						    data->supplies);  in reg_set_state()
77 			ret = regulator_bulk_disable(data->num_supplies,  in reg_set_state()
78 						     data->supplies);  in reg_set_state()
81 			data->enabled = enabled;  in reg_set_state()
85 	mutex_unlock(&data->lock);  in reg_set_state()
109 	pdata = dev_get_platdata(&pdev->dev);  in regulator_userspace_consumer_probe()
111 		return -EINVAL;  in regulator_userspace_consumer_probe()
113 	drvdata = devm_kzalloc(&pdev->dev,  in regulator_userspace_consumer_probe()
117 		return -ENOMEM;  in regulator_userspace_consumer_probe()
119 	drvdata->name = pdata->name;  in regulator_userspace_consumer_probe()
120 	drvdata->num_supplies = pdata->num_supplies;  in regulator_userspace_consumer_probe()
121 	drvdata->supplies = pdata->supplies;  in regulator_userspace_consumer_probe()
123 	mutex_init(&drvdata->lock);  in regulator_userspace_consumer_probe()
125 	ret = devm_regulator_bulk_get(&pdev->dev, drvdata->num_supplies,  in regulator_userspace_consumer_probe()
126 				      drvdata->supplies);  in regulator_userspace_consumer_probe()
128 		dev_err(&pdev->dev, "Failed to get supplies: %d\n", ret);  in regulator_userspace_consumer_probe()
132 	ret = sysfs_create_group(&pdev->dev.kobj, &attr_group);  in regulator_userspace_consumer_probe()
136 	if (pdata->init_on) {  in regulator_userspace_consumer_probe()
137 		ret = regulator_bulk_enable(drvdata->num_supplies,  in regulator_userspace_consumer_probe()
138 					    drvdata->supplies);  in regulator_userspace_consumer_probe()
140 			dev_err(&pdev->dev,  in regulator_userspace_consumer_probe()
146 	drvdata->enabled = pdata->init_on;  in regulator_userspace_consumer_probe()
152 	sysfs_remove_group(&pdev->dev.kobj, &attr_group);  in regulator_userspace_consumer_probe()
161 	sysfs_remove_group(&pdev->dev.kobj, &attr_group);  in regulator_userspace_consumer_remove()
163 	if (data->enabled)  in regulator_userspace_consumer_remove()
164 		regulator_bulk_disable(data->num_supplies, data->supplies);  in regulator_userspace_consumer_remove()
173 		.name		= "reg-userspace-consumer",