88 строки
2.1 KiB
C
88 строки
2.1 KiB
C
/*
|
|
* dummy.c
|
|
*
|
|
* Copyright 2010 Wolfson Microelectronics PLC.
|
|
*
|
|
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of the
|
|
* License, or (at your option) any later version.
|
|
*
|
|
* This is useful for systems with mixed controllable and
|
|
* non-controllable regulators, as well as for allowing testing on
|
|
* systems with no controllable regulators.
|
|
*/
|
|
|
|
#include <linux/err.h>
|
|
#include <linux/export.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/regulator/driver.h>
|
|
#include <linux/regulator/machine.h>
|
|
|
|
#include "dummy.h"
|
|
|
|
struct regulator_dev *dummy_regulator_rdev;
|
|
|
|
static struct regulator_init_data dummy_initdata;
|
|
|
|
static struct regulator_ops dummy_ops;
|
|
|
|
static struct regulator_desc dummy_desc = {
|
|
.name = "dummy",
|
|
.id = -1,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.ops = &dummy_ops,
|
|
};
|
|
|
|
static int __devinit dummy_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
int ret;
|
|
|
|
dummy_regulator_rdev = regulator_register(&dummy_desc, NULL,
|
|
&dummy_initdata, NULL);
|
|
if (IS_ERR(dummy_regulator_rdev)) {
|
|
ret = PTR_ERR(dummy_regulator_rdev);
|
|
pr_err("Failed to register regulator: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver dummy_regulator_driver = {
|
|
.probe = dummy_regulator_probe,
|
|
.driver = {
|
|
.name = "reg-dummy",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
static struct platform_device *dummy_pdev;
|
|
|
|
void __init regulator_dummy_init(void)
|
|
{
|
|
int ret;
|
|
|
|
dummy_pdev = platform_device_alloc("reg-dummy", -1);
|
|
if (!dummy_pdev) {
|
|
pr_err("Failed to allocate dummy regulator device\n");
|
|
return;
|
|
}
|
|
|
|
ret = platform_device_add(dummy_pdev);
|
|
if (ret != 0) {
|
|
pr_err("Failed to register dummy regulator device: %d\n", ret);
|
|
platform_device_put(dummy_pdev);
|
|
return;
|
|
}
|
|
|
|
ret = platform_driver_register(&dummy_regulator_driver);
|
|
if (ret != 0) {
|
|
pr_err("Failed to register dummy regulator driver: %d\n", ret);
|
|
platform_device_unregister(dummy_pdev);
|
|
}
|
|
}
|