1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (C) 2011 Texas Instruments Incorporated - https://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 #include <drm/drm_framebuffer.h>
14 
15 #include "omap_drv.h"
16 #include "omap_dmm_tiler.h"
17 
18 #ifdef CONFIG_DEBUG_FS
19 
20 static int gem_show(struct seq_file *m, void *arg)
21 {
22 	struct drm_info_node *node = (struct drm_info_node *) m->private;
23 	struct drm_device *dev = node->minor->dev;
24 	struct omap_drm_private *priv = dev->dev_private;
25 
26 	seq_printf(m, "All Objects:\n");
27 	mutex_lock(&priv->list_lock);
28 	omap_gem_describe_objects(&priv->obj_list, m);
29 	mutex_unlock(&priv->list_lock);
30 
31 	return 0;
32 }
33 
34 static int mm_show(struct seq_file *m, void *arg)
35 {
36 	struct drm_info_node *node = (struct drm_info_node *) m->private;
37 	struct drm_device *dev = node->minor->dev;
38 	struct drm_printer p = drm_seq_file_printer(m);
39 
40 	drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p);
41 
42 	return 0;
43 }
44 
45 #ifdef CONFIG_DRM_FBDEV_EMULATION
46 static int fb_show(struct seq_file *m, void *arg)
47 {
48 	struct drm_info_node *node = (struct drm_info_node *) m->private;
49 	struct drm_device *dev = node->minor->dev;
50 	struct omap_drm_private *priv = dev->dev_private;
51 	struct drm_framebuffer *fb;
52 
53 	seq_printf(m, "fbcon ");
54 	omap_framebuffer_describe(priv->fbdev->fb, m);
55 
56 	mutex_lock(&dev->mode_config.fb_lock);
57 	list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
58 		if (fb == priv->fbdev->fb)
59 			continue;
60 
61 		seq_printf(m, "user ");
62 		omap_framebuffer_describe(fb, m);
63 	}
64 	mutex_unlock(&dev->mode_config.fb_lock);
65 
66 	return 0;
67 }
68 #endif
69 
70 /* list of debufs files that are applicable to all devices */
71 static struct drm_info_list omap_debugfs_list[] = {
72 	{"gem", gem_show, 0},
73 	{"mm", mm_show, 0},
74 #ifdef CONFIG_DRM_FBDEV_EMULATION
75 	{"fb", fb_show, 0},
76 #endif
77 };
78 
79 /* list of debugfs files that are specific to devices with dmm/tiler */
80 static struct drm_info_list omap_dmm_debugfs_list[] = {
81 	{"tiler_map", tiler_map_show, 0},
82 };
83 
84 void omap_debugfs_init(struct drm_minor *minor)
85 {
86 	drm_debugfs_create_files(omap_debugfs_list,
87 				 ARRAY_SIZE(omap_debugfs_list),
88 				 minor->debugfs_root, minor);
89 
90 	if (dmm_is_available())
91 		drm_debugfs_create_files(omap_dmm_debugfs_list,
92 					 ARRAY_SIZE(omap_dmm_debugfs_list),
93 					 minor->debugfs_root, minor);
94 }
95 
96 #endif
97