drivers/staging/omapdrm/omap_debugfs.c

   1 /*
   2  * drivers/staging/omapdrm/omap_debugfs.c
   3  *
   4  * Copyright (C) 2011 Texas Instruments
   5  * Author: Rob Clark <rob.clark@linaro.org>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 as published by
   9  * the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "omap_drv.h"
  21 #include "omap_dmm_tiler.h"
  22
  23 #include "drm_fb_helper.h"
  24
  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         return drm_mm_dump_table(m, dev->mm_private);
  52 }
  53
  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         int ret;
  61
  62         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
  63         if (ret)
  64                 return ret;
  65
  66         ret = mutex_lock_interruptible(&dev->struct_mutex);
  67         if (ret) {
  68                 mutex_unlock(&dev->mode_config.mutex);
  69                 return ret;
  70         }
  71
  72         seq_printf(m, "fbcon ");
  73         omap_framebuffer_describe(priv->fbdev->fb, m);
  74
  75         mutex_lock(&dev->mode_config.fb_lock);
  76         list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
  77                 if (fb == priv->fbdev->fb)
  78                         continue;
  79
  80                 seq_printf(m, "user ");
  81                 omap_framebuffer_describe(fb, m);
  82         }
  83         mutex_unlock(&dev->mode_config.fb_lock);
  84
  85         mutex_unlock(&dev->struct_mutex);
  86         mutex_unlock(&dev->mode_config.mutex);
  87
  88         return 0;
  89 }
  90
  91 /* list of debufs files that are applicable to all devices */
  92 static struct drm_info_list omap_debugfs_list[] = {
  93         {"gem", gem_show, 0},
  94         {"mm", mm_show, 0},
  95         {"fb", fb_show, 0},
  96 };
  97
  98 /* list of debugfs files that are specific to devices with dmm/tiler */
  99 static struct drm_info_list omap_dmm_debugfs_list[] = {
 100         {"tiler_map", tiler_map_show, 0},
 101 };
 102
 103 int omap_debugfs_init(struct drm_minor *minor)
 104 {
 105         struct drm_device *dev = minor->dev;
 106         int ret;
 107
 108         ret = drm_debugfs_create_files(omap_debugfs_list,
 109                         ARRAY_SIZE(omap_debugfs_list),
 110                         minor->debugfs_root, minor);
 111
 112         if (ret) {
 113                 dev_err(dev->dev, "could not install omap_debugfs_list\n");
 114                 return ret;
 115         }
 116
 117         if (dmm_is_available())
 118                 ret = drm_debugfs_create_files(omap_dmm_debugfs_list,
 119                                 ARRAY_SIZE(omap_dmm_debugfs_list),
 120                                 minor->debugfs_root, minor);
 121
 122         if (ret) {
 123                 dev_err(dev->dev, "could not install omap_dmm_debugfs_list\n");
 124                 return ret;
 125         }
 126
 127         return ret;
 128 }
 129
 130 void omap_debugfs_cleanup(struct drm_minor *minor)
 131 {
 132         drm_debugfs_remove_files(omap_debugfs_list,
 133                         ARRAY_SIZE(omap_debugfs_list), minor);
 134         if (dmm_is_available())
 135                 drm_debugfs_remove_files(omap_dmm_debugfs_list,
 136                                 ARRAY_SIZE(omap_dmm_debugfs_list), minor);
 137 }
 138
 139 #endif