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/**
* Copyright (C) 2010-2012 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
*
* A copy of the licence is included with the program, and can also be obtained from Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/**
* @file mali_kernel_pm.c
* Linux Power Management integration
*/
#include <linux/sched.h>
#include <linux/platform_device.h>
#include <linux/version.h>
#include <asm/current.h>
#include <linux/suspend.h>
#include <linux/module.h>
#ifdef CONFIG_PM_RUNTIME
#include <linux/pm_runtime.h>
#endif
#include "mali_osk.h"
#include "mali_uk_types.h"
#include "mali_kernel_common.h"
#include "mali_kernel_license.h"
#include "mali_linux_pm.h"
#include "mali_pm.h"
#include "mali_platform.h"
#if ! MALI_LICENSE_IS_GPL
#undef CONFIG_PM_RUNTIME
#endif
#if MALI_PMM_RUNTIME_JOB_CONTROL_ON
extern void set_mali_parent_power_domain(struct platform_device* dev);
#endif /* MALI_PMM_RUNTIME_JOB_CONTROL_ON */
static int mali_probe(struct platform_device *pdev);
static int mali_remove(struct platform_device *pdev);
#ifdef CONFIG_PM_RUNTIME
static int mali_runtime_suspend(struct device *dev);
static int mali_runtime_resume(struct device *dev);
#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29))
static int mali_os_suspend(struct platform_device *pdev, pm_message_t state);
static int mali_os_resume(struct platform_device *pdev);
#else
static int mali_os_suspend(struct device *dev);
static int mali_os_resume(struct device *dev);
#endif
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29))
static const struct dev_pm_ops mali_dev_pm_ops =
{
#ifdef CONFIG_PM_RUNTIME
.runtime_suspend = mali_runtime_suspend,
.runtime_resume = mali_runtime_resume,
.runtime_idle = NULL,
#else
.suspend = mali_os_suspend,
.resume = mali_os_resume,
#endif
.freeze = mali_os_suspend,
.poweroff = mali_os_suspend,
.thaw = mali_os_resume,
.restore = mali_os_resume,
};
#elif (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29))
struct pm_ext_ops mali_ext_pm_operations =
{
.base =
{
.freeze = mali_os_suspend,
.thaw = mali_os_resume,
.poweroff = mali_os_suspend,
.restore = mali_os_resume,
},
};
#endif
static struct platform_driver mali_plat_driver =
{
.probe = mali_probe,
.remove = mali_remove,
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29))
.suspend = mali_os_suspend,
.resume = mali_os_resume,
.pm = &mali_ext_pm_operations,
#endif
.driver =
{
.name = "mali_dev",
.owner = THIS_MODULE,
#if MALI_LICENSE_IS_GPL
.bus = &platform_bus_type,
#endif
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29))
.pm = &mali_dev_pm_ops,
#endif
},
};
#ifdef CONFIG_PM_RUNTIME
static int mali_pwr_suspend_notifier(struct notifier_block *nb,unsigned long event,void* dummy);
static struct notifier_block mali_pwr_notif_block =
{
.notifier_call = mali_pwr_suspend_notifier
};
#endif
/** This function is called when platform device is unregistered. This function
* is necessary when the platform device is unregistered.
*/
static void _mali_release_pm(struct device *device)
{
}
struct platform_device mali_gpu_device =
{
.name = "mali_dev",
.id = 0,
.dev.release = _mali_release_pm
};
/** This function is called when the device is probed */
static int mali_probe(struct platform_device *pdev)
{
return 0;
}
static int mali_remove(struct platform_device *pdev)
{
#ifdef CONFIG_PM_RUNTIME
pm_runtime_disable(&pdev->dev);
#endif
return 0;
}
#ifdef CONFIG_PM_RUNTIME
static int mali_pwr_suspend_notifier(struct notifier_block *nb,unsigned long event,void* dummy)
{
switch (event)
{
case PM_SUSPEND_PREPARE:
MALI_DEBUG_PRINT(2, ("mali_pwr_suspend_notifier(PM_SUSPEND_PREPARE) called\n"));
mali_pm_os_suspend();
break;
case PM_POST_SUSPEND:
MALI_DEBUG_PRINT(2, ("mali_pwr_suspend_notifier(PM_SUSPEND_PREPARE) called\n"));
mali_pm_os_resume();
break;
default:
break;
}
return 0;
}
#endif
#ifdef CONFIG_PM_RUNTIME
static int mali_runtime_suspend(struct device *dev)
{
MALI_DEBUG_PRINT(3, ("mali_runtime_suspend() called\n"));
mali_pm_runtime_suspend();
return 0; /* all ok */
}
static int mali_runtime_resume(struct device *dev)
{
MALI_DEBUG_PRINT(3, ("mali_runtime_resume() called\n"));
mali_pm_runtime_resume();
return 0; /* all ok */
}
#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29))
static int mali_os_suspend(struct platform_device *pdev, pm_message_t state)
{
MALI_DEBUG_PRINT(3, ("mali_os_suspend(old) called\n"));
mali_pm_os_suspend();
return 0; /* all ok */
}
static int mali_os_resume(struct platform_device *pdev)
{
MALI_DEBUG_PRINT(3, ("mali_os_resume(old) called\n"));
mali_pm_os_resume();
return 0; /* all ok */
}
#else
static int mali_os_suspend(struct device *dev)
{
MALI_DEBUG_PRINT(3, ("mali_os_suspend(new) called\n"));
mali_pm_os_suspend();
return 0; /* all ok */
}
static int mali_os_resume(struct device *dev)
{
MALI_DEBUG_PRINT(3, ("mali_os_resume(new) called\n"));
mali_pm_os_resume();
return 0; /* all ok */
}
#endif
/** This function is called when Mali GPU device is initialized
*/
int _mali_dev_platform_register(void)
{
int err;
#ifdef CONFIG_PM_RUNTIME
set_mali_parent_power_domain((void *)&mali_gpu_device);
#endif
#ifdef CONFIG_PM_RUNTIME
err = register_pm_notifier(&mali_pwr_notif_block);
if (err)
{
return err;
}
#endif
#if MALI_LICENSE_IS_GPL
err = platform_device_register(&mali_gpu_device);
if (!err)
{
err = platform_driver_register(&mali_plat_driver);
if (err)
{
#ifdef CONFIG_PM_RUNTIME
unregister_pm_notifier(&mali_pwr_notif_block);
#endif
platform_device_unregister(&mali_gpu_device);
}
}
#endif
return err;
}
/** This function is called when Mali GPU device is unloaded
*/
void _mali_dev_platform_unregister(void)
{
#ifdef CONFIG_PM_RUNTIME
unregister_pm_notifier(&mali_pwr_notif_block);
#endif
#if MALI_LICENSE_IS_GPL
platform_driver_unregister(&mali_plat_driver);
platform_device_unregister(&mali_gpu_device);
#endif
}
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