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  
20  static 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  
25  void
pvr_debugfs_init(struct drm_minor * minor)26  pvr_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  	size_t i;
32  
33  	for (i = 0; i < ARRAY_SIZE(pvr_debugfs_entries); ++i) {
34  		const struct pvr_debugfs_entry *entry = &pvr_debugfs_entries[i];
35  		struct dentry *dir;
36  
37  		dir = debugfs_create_dir(entry->name, root);
38  		if (IS_ERR(dir)) {
39  			drm_warn(drm_dev,
40  				 "failed to create debugfs dir '%s' (err=%d)",
41  				 entry->name, (int)PTR_ERR(dir));
42  			continue;
43  		}
44  
45  		entry->init(pvr_dev, dir);
46  	}
47  }
48  
49  /*
50   * Since all entries are created under &drm_minor->debugfs_root, there's no
51   * need for a pvr_debugfs_fini() as DRM will clean up everything under its root
52   * automatically.
53   */
54