1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
4  * Author: Rob Clark <rob.clark@linaro.org>
5  */
6 
7 #include <linux/seq_file.h>
8 
9 #include <drm/drm_crtc.h>
10 #include <drm/drm_debugfs.h>
11 #include <drm/drm_file.h>
12 #include <drm/drm_fb_helper.h>
13 
14 #include "omap_drv.h"
15 #include "omap_dmm_tiler.h"
16 
17 #ifdef CONFIG_DEBUG_FS
18 
19 static int gem_show(struct seq_file *m, void *arg)
20 {
21 	struct drm_info_node *node = (struct drm_info_node *) m->private;
22 	struct drm_device *dev = node->minor->dev;
23 	struct omap_drm_private *priv = dev->dev_private;
24 
25 	seq_printf(m, "All Objects:\n");
26 	mutex_lock(&priv->list_lock);
27 	omap_gem_describe_objects(&priv->obj_list, m);
28 	mutex_unlock(&priv->list_lock);
29 
30 	return 0;
31 }
32 
33 static int mm_show(struct seq_file *m, void *arg)
34 {
35 	struct drm_info_node *node = (struct drm_info_node *) m->private;
36 	struct drm_device *dev = node->minor->dev;
37 	struct drm_printer p = drm_seq_file_printer(m);
38 
39 	drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p);
40 
41 	return 0;
42 }
43 
44 #ifdef CONFIG_DRM_FBDEV_EMULATION
45 static int fb_show(struct seq_file *m, void *arg)
46 {
47 	struct drm_info_node *node = (struct drm_info_node *) m->private;
48 	struct drm_device *dev = node->minor->dev;
49 	struct omap_drm_private *priv = dev->dev_private;
50 	struct drm_framebuffer *fb;
51 
52 	seq_printf(m, "fbcon ");
53 	omap_framebuffer_describe(priv->fbdev->fb, m);
54 
55 	mutex_lock(&dev->mode_config.fb_lock);
56 	list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
57 		if (fb == priv->fbdev->fb)
58 			continue;
59 
60 		seq_printf(m, "user ");
61 		omap_framebuffer_describe(fb, m);
62 	}
63 	mutex_unlock(&dev->mode_config.fb_lock);
64 
65 	return 0;
66 }
67 #endif
68 
69 /* list of debufs files that are applicable to all devices */
70 static struct drm_info_list omap_debugfs_list[] = {
71 	{"gem", gem_show, 0},
72 	{"mm", mm_show, 0},
73 #ifdef CONFIG_DRM_FBDEV_EMULATION
74 	{"fb", fb_show, 0},
75 #endif
76 };
77 
78 /* list of debugfs files that are specific to devices with dmm/tiler */
79 static struct drm_info_list omap_dmm_debugfs_list[] = {
80 	{"tiler_map", tiler_map_show, 0},
81 };
82 
83 int omap_debugfs_init(struct drm_minor *minor)
84 {
85 	struct drm_device *dev = minor->dev;
86 	int ret;
87 
88 	ret = drm_debugfs_create_files(omap_debugfs_list,
89 			ARRAY_SIZE(omap_debugfs_list),
90 			minor->debugfs_root, minor);
91 
92 	if (ret) {
93 		dev_err(dev->dev, "could not install omap_debugfs_list\n");
94 		return ret;
95 	}
96 
97 	if (dmm_is_available())
98 		ret = drm_debugfs_create_files(omap_dmm_debugfs_list,
99 				ARRAY_SIZE(omap_dmm_debugfs_list),
100 				minor->debugfs_root, minor);
101 
102 	if (ret) {
103 		dev_err(dev->dev, "could not install omap_dmm_debugfs_list\n");
104 		return ret;
105 	}
106 
107 	return ret;
108 }
109 
110 #endif
111