/*
 * Copyright (c) 2021-2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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.
 */

#include <stddef.h>
#include <linux/debugfs.h>

#include <tegra_hwpm_log.h>
#include <tegra_hwpm_io.h>
#include <tegra_hwpm.h>
#include <os/linux/debugfs.h>

/* FIXME: This is a placeholder for now. We can add debugfs nodes as needed. */
void tegra_hwpm_debugfs_init(struct tegra_soc_hwpm *hwpm)
{
	if (!hwpm) {
		tegra_hwpm_err(hwpm, "Invalid hwpm struct");
		return;
	}

	hwpm->debugfs_root =
		debugfs_create_dir(TEGRA_SOC_HWPM_MODULE_NAME, NULL);
	if (!hwpm->debugfs_root) {
		tegra_hwpm_err(hwpm, "Failed to create debugfs root directory");
		goto fail;
	}

	/* Debug logs */
	debugfs_create_u32("log_mask", S_IRUGO|S_IWUSR, hwpm->debugfs_root,
		&hwpm->dbg_mask);

	return;

fail:
	debugfs_remove_recursive(hwpm->debugfs_root);
	hwpm->debugfs_root = NULL;
}

void tegra_hwpm_debugfs_deinit(struct tegra_soc_hwpm *hwpm)
{
	if (!hwpm) {
		tegra_hwpm_err(hwpm, "Invalid hwpm struct");
		return;
	}

	debugfs_remove_recursive(hwpm->debugfs_root);
	hwpm->debugfs_root = NULL;
}