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/* linux/arch/arm/plat-samsung/pd.c
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Samsung Power domain support
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/export.h>
#include <linux/platform_device.h>
#include <linux/err.h>
#include <linux/pm_runtime.h>
#include <plat/pd.h>
static int samsung_pd_probe(struct platform_device *pdev)
{
struct samsung_pd_info *pdata = pdev->dev.platform_data;
struct device *dev = &pdev->dev;
if (!pdata) {
dev_err(dev, "no device data specified\n");
return -ENOENT;
}
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
dev_info(dev, "power domain registered\n");
return 0;
}
static int __devexit samsung_pd_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
pm_runtime_disable(dev);
return 0;
}
static int samsung_pd_runtime_suspend(struct device *dev)
{
struct samsung_pd_info *pdata = dev->platform_data;
int ret = 0;
if (pdata->disable)
ret = pdata->disable(dev);
dev_dbg(dev, "suspended\n");
return ret;
}
static int samsung_pd_runtime_resume(struct device *dev)
{
struct samsung_pd_info *pdata = dev->platform_data;
int ret = 0;
if (pdata->enable)
ret = pdata->enable(dev);
dev_dbg(dev, "resumed\n");
return ret;
}
static const struct dev_pm_ops samsung_pd_pm_ops = {
.runtime_suspend = samsung_pd_runtime_suspend,
.runtime_resume = samsung_pd_runtime_resume,
};
static struct platform_driver samsung_pd_driver = {
.driver = {
.name = "samsung-pd",
.owner = THIS_MODULE,
.pm = &samsung_pd_pm_ops,
},
.probe = samsung_pd_probe,
.remove = __devexit_p(samsung_pd_remove),
};
static int __init samsung_pd_init(void)
{
int ret;
ret = platform_driver_register(&samsung_pd_driver);
if (ret)
printk(KERN_ERR "%s: failed to add PD driver\n", __func__);
return ret;
}
arch_initcall(samsung_pd_init);
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