613330a0f7
Some devices require a regulator to work, but boards may not have a software controllable regulator for this device. Provide a helper function to make it simpler for these boards to register a fixed regulator as a dummy regulator. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
#include <linux/slab.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/machine.h>
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#include <linux/regulator/fixed.h>
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struct fixed_regulator_data {
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struct fixed_voltage_config cfg;
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struct regulator_init_data init_data;
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struct platform_device pdev;
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};
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static void regulator_fixed_release(struct device *dev)
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{
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struct fixed_regulator_data *data = container_of(dev,
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struct fixed_regulator_data, pdev.dev);
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kfree(data);
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}
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/**
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* regulator_register_fixed - register a no-op fixed regulator
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* @name: supply name
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* @id: platform device id
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* @supplies: consumers for this regulator
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* @num_supplies: number of consumers
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*/
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struct platform_device *regulator_register_fixed(int id,
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struct regulator_consumer_supply *supplies, int num_supplies)
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{
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struct fixed_regulator_data *data;
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data = kzalloc(sizeof(*data), GFP_KERNEL);
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if (!data)
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return NULL;
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data->cfg.supply_name = "dummy";
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data->cfg.microvolts = 0;
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data->cfg.gpio = -EINVAL;
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data->cfg.enabled_at_boot = 1;
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data->cfg.init_data = &data->init_data;
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data->init_data.constraints.always_on = 1;
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data->init_data.consumer_supplies = supplies;
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data->init_data.num_consumer_supplies = num_supplies;
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data->pdev.name = "reg-fixed-voltage";
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data->pdev.id = id;
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data->pdev.dev.platform_data = &data->cfg;
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data->pdev.dev.release = regulator_fixed_release;
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platform_device_register(&data->pdev);
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return &data->pdev;
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}
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