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[linux.git] / drivers / gpu / drm / omapdrm / omap_debugfs.c
1 /*
2  * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
3  * Author: Rob Clark <[email protected]>
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         int ret;
34
35         ret = mutex_lock_interruptible(&dev->struct_mutex);
36         if (ret)
37                 return ret;
38
39         seq_printf(m, "All Objects:\n");
40         omap_gem_describe_objects(&priv->obj_list, m);
41
42         mutex_unlock(&dev->struct_mutex);
43
44         return 0;
45 }
46
47 static int mm_show(struct seq_file *m, void *arg)
48 {
49         struct drm_info_node *node = (struct drm_info_node *) m->private;
50         struct drm_device *dev = node->minor->dev;
51         struct drm_printer p = drm_seq_file_printer(m);
52
53         drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p);
54
55         return 0;
56 }
57
58 #ifdef CONFIG_DRM_FBDEV_EMULATION
59 static int fb_show(struct seq_file *m, void *arg)
60 {
61         struct drm_info_node *node = (struct drm_info_node *) m->private;
62         struct drm_device *dev = node->minor->dev;
63         struct omap_drm_private *priv = dev->dev_private;
64         struct drm_framebuffer *fb;
65
66         seq_printf(m, "fbcon ");
67         omap_framebuffer_describe(priv->fbdev->fb, m);
68
69         mutex_lock(&dev->mode_config.fb_lock);
70         list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
71                 if (fb == priv->fbdev->fb)
72                         continue;
73
74                 seq_printf(m, "user ");
75                 omap_framebuffer_describe(fb, m);
76         }
77         mutex_unlock(&dev->mode_config.fb_lock);
78
79         return 0;
80 }
81 #endif
82
83 /* list of debufs files that are applicable to all devices */
84 static struct drm_info_list omap_debugfs_list[] = {
85         {"gem", gem_show, 0},
86         {"mm", mm_show, 0},
87 #ifdef CONFIG_DRM_FBDEV_EMULATION
88         {"fb", fb_show, 0},
89 #endif
90 };
91
92 /* list of debugfs files that are specific to devices with dmm/tiler */
93 static struct drm_info_list omap_dmm_debugfs_list[] = {
94         {"tiler_map", tiler_map_show, 0},
95 };
96
97 int omap_debugfs_init(struct drm_minor *minor)
98 {
99         struct drm_device *dev = minor->dev;
100         int ret;
101
102         ret = drm_debugfs_create_files(omap_debugfs_list,
103                         ARRAY_SIZE(omap_debugfs_list),
104                         minor->debugfs_root, minor);
105
106         if (ret) {
107                 dev_err(dev->dev, "could not install omap_debugfs_list\n");
108                 return ret;
109         }
110
111         if (dmm_is_available())
112                 ret = drm_debugfs_create_files(omap_dmm_debugfs_list,
113                                 ARRAY_SIZE(omap_dmm_debugfs_list),
114                                 minor->debugfs_root, minor);
115
116         if (ret) {
117                 dev_err(dev->dev, "could not install omap_dmm_debugfs_list\n");
118                 return ret;
119         }
120
121         return ret;
122 }
123
124 #endif
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