1 /*
2  * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
3  * Author: Rob Clark <rob.clark@linaro.org>
4  *
5  * This program is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 as published by
7  * the Free Software Foundation.
8  *
9  * This program is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
12  * more details.
13  *
14  * You should have received a copy of the GNU General Public License along with
15  * this program.  If not, see <http://www.gnu.org/licenses/>.
16  */
17 
18 #include <linux/seq_file.h>
19 
20 #include <drm/drm_crtc.h>
21 #include <drm/drm_fb_helper.h>
22 
23 #include "omap_drv.h"
24 #include "omap_dmm_tiler.h"
25 
26 #ifdef CONFIG_DEBUG_FS
27 
28 static int gem_show(struct seq_file *m, void *arg)
29 {
30 	struct drm_info_node *node = (struct drm_info_node *) m->private;
31 	struct drm_device *dev = node->minor->dev;
32 	struct omap_drm_private *priv = dev->dev_private;
33 
34 	seq_printf(m, "All Objects:\n");
35 	mutex_lock(&priv->list_lock);
36 	omap_gem_describe_objects(&priv->obj_list, m);
37 	mutex_unlock(&priv->list_lock);
38 
39 	return 0;
40 }
41 
42 static int mm_show(struct seq_file *m, void *arg)
43 {
44 	struct drm_info_node *node = (struct drm_info_node *) m->private;
45 	struct drm_device *dev = node->minor->dev;
46 	struct drm_printer p = drm_seq_file_printer(m);
47 
48 	drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p);
49 
50 	return 0;
51 }
52 
53 #ifdef CONFIG_DRM_FBDEV_EMULATION
54 static int fb_show(struct seq_file *m, void *arg)
55 {
56 	struct drm_info_node *node = (struct drm_info_node *) m->private;
57 	struct drm_device *dev = node->minor->dev;
58 	struct omap_drm_private *priv = dev->dev_private;
59 	struct drm_framebuffer *fb;
60 
61 	seq_printf(m, "fbcon ");
62 	omap_framebuffer_describe(priv->fbdev->fb, m);
63 
64 	mutex_lock(&dev->mode_config.fb_lock);
65 	list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
66 		if (fb == priv->fbdev->fb)
67 			continue;
68 
69 		seq_printf(m, "user ");
70 		omap_framebuffer_describe(fb, m);
71 	}
72 	mutex_unlock(&dev->mode_config.fb_lock);
73 
74 	return 0;
75 }
76 #endif
77 
78 /* list of debufs files that are applicable to all devices */
79 static struct drm_info_list omap_debugfs_list[] = {
80 	{"gem", gem_show, 0},
81 	{"mm", mm_show, 0},
82 #ifdef CONFIG_DRM_FBDEV_EMULATION
83 	{"fb", fb_show, 0},
84 #endif
85 };
86 
87 /* list of debugfs files that are specific to devices with dmm/tiler */
88 static struct drm_info_list omap_dmm_debugfs_list[] = {
89 	{"tiler_map", tiler_map_show, 0},
90 };
91 
92 int omap_debugfs_init(struct drm_minor *minor)
93 {
94 	struct drm_device *dev = minor->dev;
95 	int ret;
96 
97 	ret = drm_debugfs_create_files(omap_debugfs_list,
98 			ARRAY_SIZE(omap_debugfs_list),
99 			minor->debugfs_root, minor);
100 
101 	if (ret) {
102 		dev_err(dev->dev, "could not install omap_debugfs_list\n");
103 		return ret;
104 	}
105 
106 	if (dmm_is_available())
107 		ret = drm_debugfs_create_files(omap_dmm_debugfs_list,
108 				ARRAY_SIZE(omap_dmm_debugfs_list),
109 				minor->debugfs_root, minor);
110 
111 	if (ret) {
112 		dev_err(dev->dev, "could not install omap_dmm_debugfs_list\n");
113 		return ret;
114 	}
115 
116 	return ret;
117 }
118 
119 #endif
120