]> Git Repo - linux.git/blob - drivers/gpu/drm/vc4/vc4_debugfs.c
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux.git] / drivers / gpu / drm / vc4 / vc4_debugfs.c
1 /*
2  *  Copyright © 2014 Broadcom
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation.
7  */
8
9 #include <linux/seq_file.h>
10 #include <linux/circ_buf.h>
11 #include <linux/ctype.h>
12 #include <linux/debugfs.h>
13 #include <drm/drmP.h>
14
15 #include "vc4_drv.h"
16 #include "vc4_regs.h"
17
18 struct vc4_debugfs_info_entry {
19         struct list_head link;
20         struct drm_info_list info;
21 };
22
23 /**
24  * Called at drm_dev_register() time on each of the minors registered
25  * by the DRM device, to attach the debugfs files.
26  */
27 int
28 vc4_debugfs_init(struct drm_minor *minor)
29 {
30         struct vc4_dev *vc4 = to_vc4_dev(minor->dev);
31         struct vc4_debugfs_info_entry *entry;
32         struct dentry *dentry;
33
34         dentry = debugfs_create_bool("hvs_load_tracker", S_IRUGO | S_IWUSR,
35                                      minor->debugfs_root,
36                                      &vc4->load_tracker_enabled);
37         if (!dentry)
38                 return -ENOMEM;
39
40         list_for_each_entry(entry, &vc4->debugfs_list, link) {
41                 int ret = drm_debugfs_create_files(&entry->info, 1,
42                                                    minor->debugfs_root, minor);
43
44                 if (ret)
45                         return ret;
46         }
47
48         return 0;
49 }
50
51 static int vc4_debugfs_regset32(struct seq_file *m, void *unused)
52 {
53         struct drm_info_node *node = (struct drm_info_node *)m->private;
54         struct debugfs_regset32 *regset = node->info_ent->data;
55         struct drm_printer p = drm_seq_file_printer(m);
56
57         drm_print_regset32(&p, regset);
58
59         return 0;
60 }
61
62 /**
63  * Registers a debugfs file with a callback function for a vc4 component.
64  *
65  * This is like drm_debugfs_create_files(), but that can only be
66  * called a given DRM minor, while the various VC4 components want to
67  * register their debugfs files during the component bind process.  We
68  * track the request and delay it to be called on each minor during
69  * vc4_debugfs_init().
70  */
71 void vc4_debugfs_add_file(struct drm_device *dev,
72                           const char *name,
73                           int (*show)(struct seq_file*, void*),
74                           void *data)
75 {
76         struct vc4_dev *vc4 = to_vc4_dev(dev);
77
78         struct vc4_debugfs_info_entry *entry =
79                 devm_kzalloc(dev->dev, sizeof(*entry), GFP_KERNEL);
80
81         if (!entry)
82                 return;
83
84         entry->info.name = name;
85         entry->info.show = show;
86         entry->info.data = data;
87
88         list_add(&entry->link, &vc4->debugfs_list);
89 }
90
91 void vc4_debugfs_add_regset32(struct drm_device *drm,
92                               const char *name,
93                               struct debugfs_regset32 *regset)
94 {
95         vc4_debugfs_add_file(drm, name, vc4_debugfs_regset32, regset);
96 }
This page took 0.037161 seconds and 4 git commands to generate.