// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
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/*
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*
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* (C) COPYRIGHT 2020-2022 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
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* GNU General Public License version 2 as published by the Free Software
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* Foundation, and any use by you of this program is subject to the terms
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* of such GNU license.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you can access it online at
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* http://www.gnu.org/licenses/gpl-2.0.html.
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*
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*/
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#include "mali_kbase_dvfs_debugfs.h"
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#include <mali_kbase.h>
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#include <linux/seq_file.h>
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#if IS_ENABLED(CONFIG_DEBUG_FS)
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/**
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* kbasep_dvfs_utilization_debugfs_show() - Print the DVFS utilization info
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*
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* @file: The seq_file for printing to
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* @data: The debugfs dentry private data, a pointer to kbase_context
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*
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* Return: Negative error code or 0 on success.
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*/
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static int kbasep_dvfs_utilization_debugfs_show(struct seq_file *file, void *data)
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{
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struct kbase_device *kbdev = file->private;
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#if MALI_USE_CSF
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seq_printf(file, "busy_time: %u idle_time: %u protm_time: %u\n",
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kbdev->pm.backend.metrics.values.time_busy,
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kbdev->pm.backend.metrics.values.time_idle,
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kbdev->pm.backend.metrics.values.time_in_protm);
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#else
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seq_printf(file, "busy_time: %u idle_time: %u\n",
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kbdev->pm.backend.metrics.values.time_busy,
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kbdev->pm.backend.metrics.values.time_idle);
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#endif
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return 0;
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}
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static int kbasep_dvfs_utilization_debugfs_open(struct inode *in,
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struct file *file)
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{
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return single_open(file, kbasep_dvfs_utilization_debugfs_show,
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in->i_private);
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}
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static const struct file_operations kbasep_dvfs_utilization_debugfs_fops = {
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.open = kbasep_dvfs_utilization_debugfs_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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void kbase_dvfs_status_debugfs_init(struct kbase_device *kbdev)
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{
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struct dentry *file;
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const mode_t mode = 0444;
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if (WARN_ON(!kbdev || IS_ERR_OR_NULL(kbdev->mali_debugfs_directory)))
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return;
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file = debugfs_create_file("dvfs_utilization", mode,
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kbdev->mali_debugfs_directory, kbdev,
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&kbasep_dvfs_utilization_debugfs_fops);
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if (IS_ERR_OR_NULL(file)) {
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dev_warn(kbdev->dev,
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"Unable to create dvfs debugfs entry");
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}
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}
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#else
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/*
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* Stub functions for when debugfs is disabled
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*/
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void kbase_dvfs_status_debugfs_init(struct kbase_device *kbdev)
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{
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}
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#endif /* CONFIG_DEBUG_FS */
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