Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Sascha Hauer | 613330a | 2012-03-03 12:40:02 +0100 | [diff] [blame] | 2 | #include <linux/slab.h> |
Guennadi Liakhovetski | dfad84a | 2012-06-19 17:43:56 +0200 | [diff] [blame] | 3 | #include <linux/string.h> |
Sascha Hauer | 613330a | 2012-03-03 12:40:02 +0100 | [diff] [blame] | 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); |
Guennadi Liakhovetski | dfad84a | 2012-06-19 17:43:56 +0200 | [diff] [blame] | 18 | kfree(data->cfg.supply_name); |
Sascha Hauer | 613330a | 2012-03-03 12:40:02 +0100 | [diff] [blame] | 19 | kfree(data); |
| 20 | } |
| 21 | |
| 22 | /** |
Guennadi Liakhovetski | dfad84a | 2012-06-19 17:43:56 +0200 | [diff] [blame] | 23 | * regulator_register_fixed_name - register a no-op fixed regulator |
Sascha Hauer | 613330a | 2012-03-03 12:40:02 +0100 | [diff] [blame] | 24 | * @id: platform device id |
Guennadi Liakhovetski | dfad84a | 2012-06-19 17:43:56 +0200 | [diff] [blame] | 25 | * @name: name to be used for the regulator |
Sascha Hauer | 613330a | 2012-03-03 12:40:02 +0100 | [diff] [blame] | 26 | * @supplies: consumers for this regulator |
| 27 | * @num_supplies: number of consumers |
Guennadi Liakhovetski | 15719cc | 2012-06-19 17:44:39 +0200 | [diff] [blame] | 28 | * @uv: voltage in microvolts |
Sascha Hauer | 613330a | 2012-03-03 12:40:02 +0100 | [diff] [blame] | 29 | */ |
Guennadi Liakhovetski | dfad84a | 2012-06-19 17:43:56 +0200 | [diff] [blame] | 30 | struct platform_device *regulator_register_always_on(int id, const char *name, |
Guennadi Liakhovetski | 15719cc | 2012-06-19 17:44:39 +0200 | [diff] [blame] | 31 | struct regulator_consumer_supply *supplies, int num_supplies, int uv) |
Sascha Hauer | 613330a | 2012-03-03 12:40:02 +0100 | [diff] [blame] | 32 | { |
| 33 | struct fixed_regulator_data *data; |
| 34 | |
| 35 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
| 36 | if (!data) |
| 37 | return NULL; |
| 38 | |
Guennadi Liakhovetski | dfad84a | 2012-06-19 17:43:56 +0200 | [diff] [blame] | 39 | data->cfg.supply_name = kstrdup(name, GFP_KERNEL); |
| 40 | if (!data->cfg.supply_name) { |
| 41 | kfree(data); |
| 42 | return NULL; |
| 43 | } |
| 44 | |
Guennadi Liakhovetski | 15719cc | 2012-06-19 17:44:39 +0200 | [diff] [blame] | 45 | data->cfg.microvolts = uv; |
Sascha Hauer | 613330a | 2012-03-03 12:40:02 +0100 | [diff] [blame] | 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 | } |