| 1 | |
| 2 | #include <linux/slab.h>
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| 3 | #include <linux/string.h>
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| 4 | #include <linux/platform_device.h>
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| 5 | #include <linux/regulator/machine.h>
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| 6 | #include <linux/regulator/fixed.h>
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| 7 |
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| 8 | struct fixed_regulator_data {
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| 9 | struct fixed_voltage_config cfg;
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| 10 | struct regulator_init_data init_data;
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| 11 | struct platform_device pdev;
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| 12 | };
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| 13 |
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| 14 | static void regulator_fixed_release(struct device *dev)
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| 15 | {
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| 16 | struct fixed_regulator_data *data = container_of(dev,
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| 17 | struct fixed_regulator_data, pdev.dev);
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| 18 | kfree_const(data->cfg.supply_name);
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| 19 | kfree(data);
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| 20 | }
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| 21 |
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| 22 | |
| 23 | * regulator_register_always_on - register an always-on regulator with a fixed name
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| 24 | * @id: platform device id
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| 25 | * @name: name to be used for the regulator
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| 26 | * @supplies: consumers for this regulator
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| 27 | * @num_supplies: number of consumers
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| 28 | * @uv: voltage in microvolts
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| 29 | *
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| 30 | * Return: Pointer to registered platform device, or %NULL if memory allocation fails.
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| 31 |
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| 32 | struct platform_device *regulator_register_always_on(int id, const char *name,
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| 33 | struct regulator_consumer_supply *supplies, int num_supplies, int uv)
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| 34 | {
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| 35 | struct fixed_regulator_data *data;
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| 36 |
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| 37 | data = kzalloc_obj(*data);
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| 38 | if (!data)
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| 39 | return NULL;
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| 40 |
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| 41 | data->cfg.supply_name = kstrdup_const(name, GFP_KERNEL);
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| 42 | if (!data->cfg.supply_name) {
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| 43 | kfree(data);
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| 44 | return NULL;
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| 45 | }
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| 46 |
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| 47 | data->cfg.microvolts = uv;
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| 48 | data->cfg.enabled_at_boot = 1;
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| 49 | data->cfg.init_data = &data->init_data;
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| 50 |
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| 51 | data->init_data.constraints.always_on = 1;
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| 52 | data->init_data.consumer_supplies = supplies;
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| 53 | data->init_data.num_consumer_supplies = num_supplies;
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| 54 |
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| 55 | data->pdev.name = "reg-fixed-voltage";
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| 56 | data->pdev.id = id;
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| 57 | data->pdev.dev.platform_data = &data->cfg;
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| 58 | data->pdev.dev.release = regulator_fixed_release;
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| 59 |
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| 60 | platform_device_register(&data->pdev);
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| 61 |
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| 62 | return &data->pdev;
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| 63 | }
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