1#include <linux/slab.h>
2#include <linux/string.h>
3#include <linux/platform_device.h>
4#include <linux/regulator/machine.h>
5#include <linux/regulator/fixed.h>
6
7struct fixed_regulator_data {
8	struct fixed_voltage_config cfg;
9	struct regulator_init_data init_data;
10	struct platform_device pdev;
11};
12
13static void regulator_fixed_release(struct device *dev)
14{
15	struct fixed_regulator_data *data = container_of(dev,
16			struct fixed_regulator_data, pdev.dev);
17	kfree(data->cfg.supply_name);
18	kfree(data);
19}
20
21/**
22 * regulator_register_fixed_name - register a no-op fixed regulator
23 * @id: platform device id
24 * @name: name to be used for the regulator
25 * @supplies: consumers for this regulator
26 * @num_supplies: number of consumers
27 * @uv: voltage in microvolts
28 */
29struct platform_device *regulator_register_always_on(int id, const char *name,
30	struct regulator_consumer_supply *supplies, int num_supplies, int uv)
31{
32	struct fixed_regulator_data *data;
33
34	data = kzalloc(sizeof(*data), GFP_KERNEL);
35	if (!data)
36		return NULL;
37
38	data->cfg.supply_name = kstrdup(name, GFP_KERNEL);
39	if (!data->cfg.supply_name) {
40		kfree(data);
41		return NULL;
42	}
43
44	data->cfg.microvolts = uv;
45	data->cfg.gpio = -EINVAL;
46	data->cfg.enabled_at_boot = 1;
47	data->cfg.init_data = &data->init_data;
48
49	data->init_data.constraints.always_on = 1;
50	data->init_data.consumer_supplies = supplies;
51	data->init_data.num_consumer_supplies = num_supplies;
52
53	data->pdev.name = "reg-fixed-voltage";
54	data->pdev.id = id;
55	data->pdev.dev.platform_data = &data->cfg;
56	data->pdev.dev.release = regulator_fixed_release;
57
58	platform_device_register(&data->pdev);
59
60	return &data->pdev;
61}
62