trusty-fiq.c
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/*
* Copyright (C) 2013 Google, Inc.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/trusty/smcall.h>
#include <linux/trusty/trusty.h>
#include "trusty-fiq.h"
static int trusty_fiq_remove_child(struct device *dev, void *data)
{
platform_device_unregister(to_platform_device(dev));
return 0;
}
static int trusty_fiq_probe(struct platform_device *pdev)
{
int ret;
ret = trusty_fiq_arch_probe(pdev);
if (ret)
goto err_set_fiq_return;
ret = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to add children: %d\n", ret);
goto err_add_children;
}
return 0;
err_add_children:
device_for_each_child(&pdev->dev, NULL, trusty_fiq_remove_child);
trusty_fiq_arch_remove(pdev);
err_set_fiq_return:
return ret;
}
static int trusty_fiq_remove(struct platform_device *pdev)
{
device_for_each_child(&pdev->dev, NULL, trusty_fiq_remove_child);
trusty_fiq_arch_remove(pdev);
return 0;
}
static const struct of_device_id trusty_fiq_of_match[] = {
{ .compatible = "android,trusty-fiq-v1", },
{},
};
static struct platform_driver trusty_fiq_driver = {
.probe = trusty_fiq_probe,
.remove = trusty_fiq_remove,
.driver = {
.name = "trusty-fiq",
.owner = THIS_MODULE,
.of_match_table = trusty_fiq_of_match,
},
};
static int __init trusty_fiq_driver_init(void)
{
return platform_driver_register(&trusty_fiq_driver);
}
static void __exit trusty_fiq_driver_exit(void)
{
platform_driver_unregister(&trusty_fiq_driver);
}
subsys_initcall(trusty_fiq_driver_init);
module_exit(trusty_fiq_driver_exit);