1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright © 2014 Broadcom
6 #include <linux/seq_file.h>
7 #include <linux/circ_buf.h>
8 #include <linux/ctype.h>
9 #include <linux/debugfs.h>
10 #include <linux/platform_device.h>
15 struct vc4_debugfs_info_entry {
16 struct list_head link;
17 struct drm_info_list info;
21 * Called at drm_dev_register() time on each of the minors registered
22 * by the DRM device, to attach the debugfs files.
25 vc4_debugfs_init(struct drm_minor *minor)
27 struct vc4_dev *vc4 = to_vc4_dev(minor->dev);
28 struct vc4_debugfs_info_entry *entry;
30 if (!of_device_is_compatible(vc4->hvs->pdev->dev.of_node,
32 debugfs_create_bool("hvs_load_tracker", S_IRUGO | S_IWUSR,
33 minor->debugfs_root, &vc4->load_tracker_enabled);
35 list_for_each_entry(entry, &vc4->debugfs_list, link) {
36 drm_debugfs_create_files(&entry->info, 1,
37 minor->debugfs_root, minor);
41 static int vc4_debugfs_regset32(struct seq_file *m, void *unused)
43 struct drm_info_node *node = (struct drm_info_node *)m->private;
44 struct debugfs_regset32 *regset = node->info_ent->data;
45 struct drm_printer p = drm_seq_file_printer(m);
47 drm_print_regset32(&p, regset);
53 * Registers a debugfs file with a callback function for a vc4 component.
55 * This is like drm_debugfs_create_files(), but that can only be
56 * called a given DRM minor, while the various VC4 components want to
57 * register their debugfs files during the component bind process. We
58 * track the request and delay it to be called on each minor during
61 void vc4_debugfs_add_file(struct drm_device *dev,
63 int (*show)(struct seq_file*, void*),
66 struct vc4_dev *vc4 = to_vc4_dev(dev);
68 struct vc4_debugfs_info_entry *entry =
69 devm_kzalloc(dev->dev, sizeof(*entry), GFP_KERNEL);
74 entry->info.name = name;
75 entry->info.show = show;
76 entry->info.data = data;
78 list_add(&entry->link, &vc4->debugfs_list);
81 void vc4_debugfs_add_regset32(struct drm_device *drm,
83 struct debugfs_regset32 *regset)
85 vc4_debugfs_add_file(drm, name, vc4_debugfs_regset32, regset);