1 #include <linux/slab.h> 2 #include <linux/platform_device.h> 3 #include <linux/regulator/machine.h> 4 #include <linux/regulator/fixed.h> 5 6 struct fixed_regulator_data { 7 struct fixed_voltage_config cfg; 8 struct regulator_init_data init_data; 9 struct platform_device pdev; 10 }; 11 12 static void regulator_fixed_release(struct device *dev) 13 { 14 struct fixed_regulator_data *data = container_of(dev, 15 struct fixed_regulator_data, pdev.dev); 16 kfree(data); 17 } 18 19 /** 20 * regulator_register_fixed - register a no-op fixed regulator 21 * @id: platform device id 22 * @supplies: consumers for this regulator 23 * @num_supplies: number of consumers 24 */ 25 struct platform_device *regulator_register_fixed(int id, 26 struct regulator_consumer_supply *supplies, int num_supplies) 27 { 28 struct fixed_regulator_data *data; 29 30 data = kzalloc(sizeof(*data), GFP_KERNEL); 31 if (!data) 32 return NULL; 33 34 data->cfg.supply_name = "fixed-dummy"; 35 data->cfg.microvolts = 0; 36 data->cfg.gpio = -EINVAL; 37 data->cfg.enabled_at_boot = 1; 38 data->cfg.init_data = &data->init_data; 39 40 data->init_data.constraints.always_on = 1; 41 data->init_data.consumer_supplies = supplies; 42 data->init_data.num_consumer_supplies = num_supplies; 43 44 data->pdev.name = "reg-fixed-voltage"; 45 data->pdev.id = id; 46 data->pdev.dev.platform_data = &data->cfg; 47 data->pdev.dev.release = regulator_fixed_release; 48 49 platform_device_register(&data->pdev); 50 51 return &data->pdev; 52 } 53