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// SPDX-License-Identifier: GPL-2.0
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/*
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 * Copyright (C) 2025, Advanced Micro Devices, Inc.
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 */
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#include <drm/amdxdna_accel.h>
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#include <drm/drm_drv.h>
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#include <linux/pm_runtime.h>
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#include "amdxdna_pm.h"
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#define AMDXDNA_AUTOSUSPEND_DELAY	5000 /* milliseconds */
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int amdxdna_pm_suspend(struct device *dev)
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{
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	struct amdxdna_dev *xdna = to_xdna_dev(dev_get_drvdata(dev));
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	int ret = -EOPNOTSUPP;
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	guard(mutex)(&xdna->dev_lock);
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	if (xdna->dev_info->ops->suspend)
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		ret = xdna->dev_info->ops->suspend(xdna);
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	XDNA_DBG(xdna, "Suspend done ret %d", ret);
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	return ret;
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}
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int amdxdna_pm_resume(struct device *dev)
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{
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	struct amdxdna_dev *xdna = to_xdna_dev(dev_get_drvdata(dev));
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	int ret = -EOPNOTSUPP;
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	guard(mutex)(&xdna->dev_lock);
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	if (xdna->dev_info->ops->resume)
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		ret = xdna->dev_info->ops->resume(xdna);
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	XDNA_DBG(xdna, "Resume done ret %d", ret);
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	return ret;
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}
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int amdxdna_pm_resume_get(struct amdxdna_dev *xdna)
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{
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	struct device *dev = xdna->ddev.dev;
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	int ret;
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	ret = pm_runtime_resume_and_get(dev);
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	if (ret) {
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		XDNA_ERR(xdna, "Resume failed: %d", ret);
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		pm_runtime_set_suspended(dev);
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	}
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	return ret;
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}
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void amdxdna_pm_suspend_put(struct amdxdna_dev *xdna)
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{
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	struct device *dev = xdna->ddev.dev;
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	pm_runtime_put_autosuspend(dev);
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}
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void amdxdna_pm_init(struct amdxdna_dev *xdna)
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{
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	struct device *dev = xdna->ddev.dev;
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	pm_runtime_set_active(dev);
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	pm_runtime_set_autosuspend_delay(dev, AMDXDNA_AUTOSUSPEND_DELAY);
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	pm_runtime_use_autosuspend(dev);
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	pm_runtime_allow(dev);
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	pm_runtime_put_autosuspend(dev);
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}
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void amdxdna_pm_fini(struct amdxdna_dev *xdna)
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{
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	struct device *dev = xdna->ddev.dev;
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	pm_runtime_get_noresume(dev);
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	pm_runtime_forbid(dev);
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}
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