1// SPDX-License-Identifier: GPL-2.0-only
2/* Copyright(c) 2023 Intel Corporation */
3#include <linux/debugfs.h>
4#include <linux/fs.h>
5#include <linux/kernel.h>
6
7#include "adf_accel_devices.h"
8#include "adf_pm_dbgfs.h"
9
10static ssize_t pm_status_read(struct file *f, char __user *buf, size_t count,
11			      loff_t *pos)
12{
13	struct adf_accel_dev *accel_dev = file_inode(f)->i_private;
14	struct adf_pm pm = accel_dev->power_management;
15
16	if (pm.print_pm_status)
17		return pm.print_pm_status(accel_dev, buf, count, pos);
18
19	return count;
20}
21
22static const struct file_operations pm_status_fops = {
23	.owner = THIS_MODULE,
24	.read = pm_status_read,
25};
26
27void adf_pm_dbgfs_add(struct adf_accel_dev *accel_dev)
28{
29	struct adf_pm *pm = &accel_dev->power_management;
30
31	if (!pm->present || !pm->print_pm_status)
32		return;
33
34	pm->debugfs_pm_status = debugfs_create_file("pm_status", 0400,
35						    accel_dev->debugfs_dir,
36						    accel_dev, &pm_status_fops);
37}
38
39void adf_pm_dbgfs_rm(struct adf_accel_dev *accel_dev)
40{
41	struct adf_pm *pm = &accel_dev->power_management;
42
43	if (!pm->present)
44		return;
45
46	debugfs_remove(pm->debugfs_pm_status);
47	pm->debugfs_pm_status = NULL;
48}
49