0001
0002 #include <linux/slab.h>
0003 #include <linux/string.h>
0004 #include <linux/platform_device.h>
0005 #include <linux/regulator/machine.h>
0006 #include <linux/regulator/fixed.h>
0007
0008 struct fixed_regulator_data {
0009 struct fixed_voltage_config cfg;
0010 struct regulator_init_data init_data;
0011 struct platform_device pdev;
0012 };
0013
0014 static void regulator_fixed_release(struct device *dev)
0015 {
0016 struct fixed_regulator_data *data = container_of(dev,
0017 struct fixed_regulator_data, pdev.dev);
0018 kfree(data->cfg.supply_name);
0019 kfree(data);
0020 }
0021
0022
0023
0024
0025
0026
0027
0028
0029
0030 struct platform_device *regulator_register_always_on(int id, const char *name,
0031 struct regulator_consumer_supply *supplies, int num_supplies, int uv)
0032 {
0033 struct fixed_regulator_data *data;
0034
0035 data = kzalloc(sizeof(*data), GFP_KERNEL);
0036 if (!data)
0037 return NULL;
0038
0039 data->cfg.supply_name = kstrdup(name, GFP_KERNEL);
0040 if (!data->cfg.supply_name) {
0041 kfree(data);
0042 return NULL;
0043 }
0044
0045 data->cfg.microvolts = uv;
0046 data->cfg.enabled_at_boot = 1;
0047 data->cfg.init_data = &data->init_data;
0048
0049 data->init_data.constraints.always_on = 1;
0050 data->init_data.consumer_supplies = supplies;
0051 data->init_data.num_consumer_supplies = num_supplies;
0052
0053 data->pdev.name = "reg-fixed-voltage";
0054 data->pdev.id = id;
0055 data->pdev.dev.platform_data = &data->cfg;
0056 data->pdev.dev.release = regulator_fixed_release;
0057
0058 platform_device_register(&data->pdev);
0059
0060 return &data->pdev;
0061 }