1// SPDX-License-Identifier: GPL-2.0-only OR MIT
2/* Copyright (c) 2023 Imagination Technologies Ltd. */
3
4#include "pvr_debugfs.h"
5
6#include "pvr_device.h"
7#include "pvr_fw_trace.h"
8#include "pvr_params.h"
9
10#include <linux/dcache.h>
11#include <linux/debugfs.h>
12#include <linux/err.h>
13#include <linux/kernel.h>
14#include <linux/types.h>
15
16#include <drm/drm_device.h>
17#include <drm/drm_file.h>
18#include <drm/drm_print.h>
19
20static const struct pvr_debugfs_entry pvr_debugfs_entries[] = {
21 {"pvr_params", pvr_params_debugfs_init},
22 {"pvr_fw", pvr_fw_trace_debugfs_init},
23};
24
25void
26pvr_debugfs_init(struct drm_minor *minor)
27{
28 struct drm_device *drm_dev = minor->dev;
29 struct pvr_device *pvr_dev = to_pvr_device(drm_dev);
30 struct dentry *root = minor->debugfs_root;
31
32 for (size_t i = 0; i < ARRAY_SIZE(pvr_debugfs_entries); ++i) {
33 const struct pvr_debugfs_entry *entry = &pvr_debugfs_entries[i];
34 struct dentry *dir;
35
36 dir = debugfs_create_dir(name: entry->name, parent: root);
37 if (IS_ERR(ptr: dir)) {
38 drm_warn(drm_dev,
39 "failed to create debugfs dir '%s' (err=%d)",
40 entry->name, (int)PTR_ERR(dir));
41 continue;
42 }
43
44 entry->init(pvr_dev, dir);
45 }
46}
47
48/*
49 * Since all entries are created under &drm_minor->debugfs_root, there's no
50 * need for a pvr_debugfs_fini() as DRM will clean up everything under its root
51 * automatically.
52 */
53

source code of linux/drivers/gpu/drm/imagination/pvr_debugfs.c