Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
613330a0 | 2 | #include <linux/slab.h> |
dfad84ae | 3 | #include <linux/string.h> |
613330a0 SH |
4 | #include <linux/platform_device.h> |
5 | #include <linux/regulator/machine.h> | |
6 | #include <linux/regulator/fixed.h> | |
7 | ||
8 | struct fixed_regulator_data { | |
9 | struct fixed_voltage_config cfg; | |
10 | struct regulator_init_data init_data; | |
11 | struct platform_device pdev; | |
12 | }; | |
13 | ||
14 | static void regulator_fixed_release(struct device *dev) | |
15 | { | |
16 | struct fixed_regulator_data *data = container_of(dev, | |
17 | struct fixed_regulator_data, pdev.dev); | |
dfad84ae | 18 | kfree(data->cfg.supply_name); |
613330a0 SH |
19 | kfree(data); |
20 | } | |
21 | ||
22 | /** | |
a508a267 | 23 | * regulator_register_always_on - register an always-on regulator with a fixed name |
613330a0 | 24 | * @id: platform device id |
dfad84ae | 25 | * @name: name to be used for the regulator |
613330a0 SH |
26 | * @supplies: consumers for this regulator |
27 | * @num_supplies: number of consumers | |
15719ccc | 28 | * @uv: voltage in microvolts |
613330a0 | 29 | */ |
dfad84ae | 30 | struct platform_device *regulator_register_always_on(int id, const char *name, |
15719ccc | 31 | struct regulator_consumer_supply *supplies, int num_supplies, int uv) |
613330a0 SH |
32 | { |
33 | struct fixed_regulator_data *data; | |
34 | ||
35 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
36 | if (!data) | |
37 | return NULL; | |
38 | ||
dfad84ae GL |
39 | data->cfg.supply_name = kstrdup(name, GFP_KERNEL); |
40 | if (!data->cfg.supply_name) { | |
41 | kfree(data); | |
42 | return NULL; | |
43 | } | |
44 | ||
15719ccc | 45 | data->cfg.microvolts = uv; |
613330a0 SH |
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 | } |