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/*
*
* (C) COPYRIGHT 2015, 2017 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you can access it online at
* http://www.gnu.org/licenses/gpl-2.0.html.
*
* SPDX-License-Identifier: GPL-2.0
*
*/
#include <mali_kbase.h>
#include <mali_kbase_defs.h>
#include <linux/pm_runtime.h>
#include "mali_kbase_config_platform.h"
static int pm_callback_power_on(struct kbase_device *kbdev)
{
int ret = 1; /* Assume GPU has been powered off */
int error;
dev_dbg(kbdev->dev, "pm_callback_power_on %p\n",
(void *)kbdev->dev->pm_domain);
error = pm_runtime_get_sync(kbdev->dev);
if (error == 1) {
/*
* Let core know that the chip has not been
* powered off, so we can save on re-initialization.
*/
ret = 0;
}
dev_dbg(kbdev->dev, "pm_runtime_get_sync returned %d\n", error);
return ret;
}
static void pm_callback_power_off(struct kbase_device *kbdev)
{
dev_dbg(kbdev->dev, "pm_callback_power_off\n");
pm_runtime_mark_last_busy(kbdev->dev);
pm_runtime_put_autosuspend(kbdev->dev);
}
#ifdef KBASE_PM_RUNTIME
static int kbase_device_runtime_init(struct kbase_device *kbdev)
{
int ret = 0;
dev_dbg(kbdev->dev, "kbase_device_runtime_init\n");
pm_runtime_set_autosuspend_delay(kbdev->dev, AUTO_SUSPEND_DELAY);
pm_runtime_use_autosuspend(kbdev->dev);
pm_runtime_set_active(kbdev->dev);
pm_runtime_enable(kbdev->dev);
if (!pm_runtime_enabled(kbdev->dev)) {
dev_warn(kbdev->dev, "pm_runtime not enabled");
ret = -ENOSYS;
}
return ret;
}
static void kbase_device_runtime_disable(struct kbase_device *kbdev)
{
dev_dbg(kbdev->dev, "kbase_device_runtime_disable\n");
pm_runtime_disable(kbdev->dev);
}
#endif
static int pm_callback_runtime_on(struct kbase_device *kbdev)
{
dev_dbg(kbdev->dev, "pm_callback_runtime_on\n");
return 0;
}
static void pm_callback_runtime_off(struct kbase_device *kbdev)
{
dev_dbg(kbdev->dev, "pm_callback_runtime_off\n");
}
static void pm_callback_resume(struct kbase_device *kbdev)
{
int ret = pm_callback_runtime_on(kbdev);
WARN_ON(ret);
}
static void pm_callback_suspend(struct kbase_device *kbdev)
{
pm_callback_runtime_off(kbdev);
}
struct kbase_pm_callback_conf pm_callbacks = {
.power_on_callback = pm_callback_power_on,
.power_off_callback = pm_callback_power_off,
.power_suspend_callback = pm_callback_suspend,
.power_resume_callback = pm_callback_resume,
#ifdef KBASE_PM_RUNTIME
.power_runtime_init_callback = kbase_device_runtime_init,
.power_runtime_term_callback = kbase_device_runtime_disable,
.power_runtime_on_callback = pm_callback_runtime_on,
.power_runtime_off_callback = pm_callback_runtime_off,
#else /* KBASE_PM_RUNTIME */
.power_runtime_init_callback = NULL,
.power_runtime_term_callback = NULL,
.power_runtime_on_callback = NULL,
.power_runtime_off_callback = NULL,
#endif /* KBASE_PM_RUNTIME */
};
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