/**
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* Copyright (C) 2010-2017 ARM Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
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*
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* A copy of the licence is included with the program, and can also be obtained from Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/**
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* @file mali_osk_pm.c
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* Implementation of the callback functions from common power management
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*/
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#include <linux/sched.h>
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#include "mali_kernel_linux.h"
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#ifdef CONFIG_PM_RUNTIME
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#include <linux/pm_runtime.h>
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#endif /* CONFIG_PM_RUNTIME */
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#include <linux/platform_device.h>
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#include <linux/version.h>
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#include "mali_osk.h"
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#include "mali_kernel_common.h"
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/* Can NOT run in atomic context */
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_mali_osk_errcode_t _mali_osk_pm_dev_ref_get_sync(void)
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{
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#ifdef CONFIG_PM_RUNTIME
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int err;
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MALI_DEBUG_ASSERT_POINTER(mali_platform_device);
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err = pm_runtime_get_sync(&(mali_platform_device->dev));
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37))
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pm_runtime_mark_last_busy(&(mali_platform_device->dev));
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#endif
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if (0 > err) {
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MALI_PRINT_ERROR(("Mali OSK PM: pm_runtime_get_sync() returned error code %d\n", err));
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return _MALI_OSK_ERR_FAULT;
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}
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#endif
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return _MALI_OSK_ERR_OK;
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}
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/* Can run in atomic context */
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_mali_osk_errcode_t _mali_osk_pm_dev_ref_get_async(void)
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{
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#ifdef CONFIG_PM_RUNTIME
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int err;
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MALI_DEBUG_ASSERT_POINTER(mali_platform_device);
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err = pm_runtime_get(&(mali_platform_device->dev));
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37))
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pm_runtime_mark_last_busy(&(mali_platform_device->dev));
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#endif
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if (0 > err && -EINPROGRESS != err) {
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MALI_PRINT_ERROR(("Mali OSK PM: pm_runtime_get() returned error code %d\n", err));
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return _MALI_OSK_ERR_FAULT;
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}
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#endif
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return _MALI_OSK_ERR_OK;
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}
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/* Can run in atomic context */
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void _mali_osk_pm_dev_ref_put(void)
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{
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#ifdef CONFIG_PM_RUNTIME
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MALI_DEBUG_ASSERT_POINTER(mali_platform_device);
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37))
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pm_runtime_mark_last_busy(&(mali_platform_device->dev));
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pm_runtime_put_autosuspend(&(mali_platform_device->dev));
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#else
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pm_runtime_put(&(mali_platform_device->dev));
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#endif
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#endif
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}
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void _mali_osk_pm_dev_barrier(void)
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{
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#ifdef CONFIG_PM_RUNTIME
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pm_runtime_barrier(&(mali_platform_device->dev));
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#endif
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}
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