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/*
* Runtime PM support code for OMAP1
*
* Author: Kevin Hilman, Deep Root Systems, LLC
*
* Copyright (C) 2010 Texas Instruments, Inc.
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/pm_runtime.h>
#include <linux/platform_device.h>
#include <linux/mutex.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <plat/omap_device.h>
#include <plat/omap-pm.h>
#ifdef CONFIG_PM_RUNTIME
static int omap1_pm_runtime_suspend(struct device *dev)
{
int ret;
dev_dbg(dev, "%s\n", __func__);
ret = pm_generic_runtime_suspend(dev);
if (ret)
return ret;
ret = pm_runtime_clk_suspend(dev);
if (ret) {
pm_generic_runtime_resume(dev);
return ret;
}
return 0;
}
static int omap1_pm_runtime_resume(struct device *dev)
{
dev_dbg(dev, "%s\n", __func__);
pm_runtime_clk_resume(dev);
return pm_generic_runtime_resume(dev);
}
static struct dev_power_domain default_power_domain = {
.ops = {
.runtime_suspend = omap1_pm_runtime_suspend,
.runtime_resume = omap1_pm_runtime_resume,
USE_PLATFORM_PM_SLEEP_OPS
},
};
#define OMAP1_PWR_DOMAIN (&default_power_domain)
#else
#define OMAP1_PWR_DOMAIN NULL
#endif /* CONFIG_PM_RUNTIME */
static struct pm_clk_notifier_block platform_bus_notifier = {
.pwr_domain = OMAP1_PWR_DOMAIN,
.con_ids = { "ick", "fck", NULL, },
};
static int __init omap1_pm_runtime_init(void)
{
if (!cpu_class_is_omap1())
return -ENODEV;
pm_runtime_clk_add_notifier(&platform_bus_type, &platform_bus_notifier);
return 0;
}
core_initcall(omap1_pm_runtime_init);
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