// SPDX-License-Identifier: GPL-2.0 #include <linux/slab.h> #include <linux/string.h> #include <linux/platform_device.h> #include <linux/regulator/machine.h> #include <linux/regulator/fixed.h> struct fixed_regulator_data { struct fixed_voltage_config cfg; struct regulator_init_data init_data; struct platform_device pdev; }; static void regulator_fixed_release(struct device *dev) { struct fixed_regulator_data *data = container_of(dev, struct fixed_regulator_data, pdev.dev); kfree(data->cfg.supply_name); kfree(data); } /** * regulator_register_fixed_name - register a no-op fixed regulator * @id: platform device id * @name: name to be used for the regulator * @supplies: consumers for this regulator * @num_supplies: number of consumers * @uv: voltage in microvolts */ struct platform_device *regulator_register_always_on(int id, const char *name, struct regulator_consumer_supply *supplies, int num_supplies, int uv) { struct fixed_regulator_data *data; data = kzalloc(sizeof(*data), GFP_KERNEL); if (!data) return NULL; data->cfg.supply_name = kstrdup(name, GFP_KERNEL); if (!data->cfg.supply_name) { kfree(data); return NULL; } data->cfg.microvolts = uv; data->cfg.gpio = -EINVAL; data->cfg.enabled_at_boot = 1; data->cfg.init_data = &data->init_data; data->init_data.constraints.always_on = 1; data->init_data.consumer_supplies = supplies; data->init_data.num_consumer_supplies = num_supplies; data->pdev.name = "reg-fixed-voltage"; data->pdev.id = id; data->pdev.dev.platform_data = &data->cfg; data->pdev.dev.release = regulator_fixed_release; platform_device_register(&data->pdev); return &data->pdev; }