81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
/*
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* Runtime PM support code for OMAP1
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*
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* Author: Kevin Hilman, Deep Root Systems, LLC
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*
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* Copyright (C) 2010 Texas Instruments, Inc.
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/io.h>
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#include <linux/pm_runtime.h>
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#include <linux/pm_clock.h>
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#include <linux/platform_device.h>
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#include <linux/mutex.h>
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <plat/omap_device.h>
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#include <plat/omap-pm.h>
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#ifdef CONFIG_PM_RUNTIME
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static int omap1_pm_runtime_suspend(struct device *dev)
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{
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int ret;
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dev_dbg(dev, "%s\n", __func__);
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ret = pm_generic_runtime_suspend(dev);
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if (ret)
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return ret;
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ret = pm_clk_suspend(dev);
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if (ret) {
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pm_generic_runtime_resume(dev);
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return ret;
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}
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return 0;
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}
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static int omap1_pm_runtime_resume(struct device *dev)
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{
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dev_dbg(dev, "%s\n", __func__);
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pm_clk_resume(dev);
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return pm_generic_runtime_resume(dev);
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}
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static struct dev_pm_domain default_pm_domain = {
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.ops = {
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.runtime_suspend = omap1_pm_runtime_suspend,
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.runtime_resume = omap1_pm_runtime_resume,
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USE_PLATFORM_PM_SLEEP_OPS
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},
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};
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#define OMAP1_PM_DOMAIN (&default_pm_domain)
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#else
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#define OMAP1_PM_DOMAIN NULL
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#endif /* CONFIG_PM_RUNTIME */
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static struct pm_clk_notifier_block platform_bus_notifier = {
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.pm_domain = OMAP1_PM_DOMAIN,
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.con_ids = { "ick", "fck", NULL, },
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};
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static int __init omap1_pm_runtime_init(void)
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{
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if (!cpu_class_is_omap1())
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return -ENODEV;
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pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier);
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return 0;
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}
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core_initcall(omap1_pm_runtime_init);
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