// SPDX-License-Identifier: GPL-2.0-only
/* Copyright(c) 2023 Intel Corporation */
#include <linux/debugfs.h>
#include <linux/fs.h>
#include <linux/kernel.h>

#include "adf_accel_devices.h"
#include "adf_pm_dbgfs.h"

static ssize_t pm_status_read(struct file *f, char __user *buf, size_t count,
                              loff_t *pos)
{
        struct adf_accel_dev *accel_dev = file_inode(f)->i_private;
        struct adf_pm pm = accel_dev->power_management;

        if (pm.print_pm_status)
                return pm.print_pm_status(accel_dev, buf, count, pos);

        return count;
}

static const struct file_operations pm_status_fops = {
        .owner = THIS_MODULE,
        .read = pm_status_read,
};

void adf_pm_dbgfs_add(struct adf_accel_dev *accel_dev)
{
        struct adf_pm *pm = &accel_dev->power_management;

        if (!pm->present || !pm->print_pm_status)
                return;

        pm->debugfs_pm_status = debugfs_create_file("pm_status", 0400,
                                                    accel_dev->debugfs_dir,
                                                    accel_dev, &pm_status_fops);
}

void adf_pm_dbgfs_rm(struct adf_accel_dev *accel_dev)
{
        struct adf_pm *pm = &accel_dev->power_management;

        if (!pm->present)
                return;

        debugfs_remove(pm->debugfs_pm_status);
        pm->debugfs_pm_status = NULL;
}