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// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
/*
*
* (C) COPYRIGHT 2020-2021 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 license.
*
* 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.
*
*/
#include "mali_kbase_dvfs_debugfs.h"
#include <mali_kbase.h>
#include <linux/seq_file.h>
#if IS_ENABLED(CONFIG_DEBUG_FS)
/**
* kbasep_dvfs_utilization_debugfs_show() - Print the DVFS utilization info
*
* @file: The seq_file for printing to
* @data: The debugfs dentry private data, a pointer to kbase_context
*
* Return: Negative error code or 0 on success.
*/
static int kbasep_dvfs_utilization_debugfs_show(struct seq_file *file, void *data)
{
struct kbase_device *kbdev = file->private;
#if MALI_USE_CSF
seq_printf(file, "busy_time: %u idle_time: %u protm_time: %u\n",
kbdev->pm.backend.metrics.values.time_busy,
kbdev->pm.backend.metrics.values.time_idle,
kbdev->pm.backend.metrics.values.time_in_protm);
#else
seq_printf(file, "busy_time: %u idle_time: %u\n",
kbdev->pm.backend.metrics.values.time_busy,
kbdev->pm.backend.metrics.values.time_idle);
#endif
return 0;
}
static int kbasep_dvfs_utilization_debugfs_open(struct inode *in,
struct file *file)
{
return single_open(file, kbasep_dvfs_utilization_debugfs_show,
in->i_private);
}
static const struct file_operations kbasep_dvfs_utilization_debugfs_fops = {
.open = kbasep_dvfs_utilization_debugfs_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
void kbase_dvfs_status_debugfs_init(struct kbase_device *kbdev)
{
struct dentry *file;
#if (KERNEL_VERSION(4, 7, 0) <= LINUX_VERSION_CODE)
const mode_t mode = 0444;
#else
const mode_t mode = 0400;
#endif
if (WARN_ON(!kbdev || IS_ERR_OR_NULL(kbdev->mali_debugfs_directory)))
return;
file = debugfs_create_file("dvfs_utilization", mode,
kbdev->mali_debugfs_directory, kbdev,
&kbasep_dvfs_utilization_debugfs_fops);
if (IS_ERR_OR_NULL(file)) {
dev_warn(kbdev->dev,
"Unable to create dvfs debugfs entry");
}
}
#else
/*
* Stub functions for when debugfs is disabled
*/
void kbase_dvfs_status_debugfs_init(struct kbase_device *kbdev)
{
}
#endif /* CONFIG_DEBUG_FS */
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