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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_osk_pm.c
* Implementation of the callback functions from common power management
*/
#include <linux/sched.h>
#ifdef CONFIG_PM_RUNTIME
#include <linux/pm_runtime.h>
#endif /* CONFIG_PM_RUNTIME */
#include <linux/platform_device.h>
#include "mali_platform.h"
#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_kernel_license.h"
#if ! MALI_LICENSE_IS_GPL
#undef CONFIG_PM_RUNTIME
#endif
extern struct platform_device mali_gpu_device;
#ifdef CONFIG_PM_RUNTIME
static mali_bool have_runtime_reference = MALI_FALSE;
#endif
void _mali_osk_pm_dev_enable(void)
{
#ifdef CONFIG_PM_RUNTIME
pm_runtime_enable(&(mali_gpu_device.dev));
#endif
}
/* NB: Function is not thread safe */
_mali_osk_errcode_t _mali_osk_pm_dev_idle(void)
{
#ifdef CONFIG_PM_RUNTIME
if (MALI_TRUE == have_runtime_reference)
{
int err;
err = pm_runtime_put_sync(&(mali_gpu_device.dev));
if (0 > err)
{
MALI_PRINT_ERROR(("OSK PM: pm_runtime_put_sync() returned error code %d\n", err));
return _MALI_OSK_ERR_FAULT;
}
have_runtime_reference = MALI_FALSE;
}
#endif
return _MALI_OSK_ERR_OK;
}
/* NB: Function is not thread safe */
_mali_osk_errcode_t _mali_osk_pm_dev_activate(void)
{
#ifdef CONFIG_PM_RUNTIME
if (MALI_TRUE != have_runtime_reference)
{
int err;
err = pm_runtime_get_sync(&(mali_gpu_device.dev));
if (0 > err)
{
MALI_PRINT_ERROR(("OSK PM: pm_runtime_get_sync() returned error code %d\n", err));
return _MALI_OSK_ERR_FAULT;
}
have_runtime_reference = MALI_TRUE;
}
#endif
return _MALI_OSK_ERR_OK;
}
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