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Kevin Hilman
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Sekhar Nori
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Jul 1, 2012
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refs/heads/master: 07caba966dee241cd6599618a243be721195de38 | ||
refs/heads/master: ce9dcb8784611c50974d1c6b600c71f5c0a29308 |
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/* | ||
* Runtime PM support code for DaVinci | ||
* | ||
* Author: Kevin Hilman | ||
* | ||
* Copyright (C) 2012 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/pm_runtime.h> | ||
#include <linux/pm_clock.h> | ||
#include <linux/platform_device.h> | ||
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#ifdef CONFIG_PM_RUNTIME | ||
static int davinci_pm_runtime_suspend(struct device *dev) | ||
{ | ||
int ret; | ||
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dev_dbg(dev, "%s\n", __func__); | ||
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ret = pm_generic_runtime_suspend(dev); | ||
if (ret) | ||
return ret; | ||
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ret = pm_clk_suspend(dev); | ||
if (ret) { | ||
pm_generic_runtime_resume(dev); | ||
return ret; | ||
} | ||
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return 0; | ||
} | ||
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static int davinci_pm_runtime_resume(struct device *dev) | ||
{ | ||
dev_dbg(dev, "%s\n", __func__); | ||
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pm_clk_resume(dev); | ||
return pm_generic_runtime_resume(dev); | ||
} | ||
#endif | ||
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static struct dev_pm_domain davinci_pm_domain = { | ||
.ops = { | ||
SET_RUNTIME_PM_OPS(davinci_pm_runtime_suspend, | ||
davinci_pm_runtime_resume, NULL) | ||
USE_PLATFORM_PM_SLEEP_OPS | ||
}, | ||
}; | ||
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static struct pm_clk_notifier_block platform_bus_notifier = { | ||
.pm_domain = &davinci_pm_domain, | ||
}; | ||
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static int __init davinci_pm_runtime_init(void) | ||
{ | ||
pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier); | ||
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return 0; | ||
} | ||
core_initcall(davinci_pm_runtime_init); |