LXR linux/drivers/gpu/drm/omapdrm/omap

   1/*
   2 * drivers/gpu/drm/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
  28static 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
  47static 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
  54static 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
  77/* list of debufs files that are applicable to all devices */
  78static struct drm_info_list omap_debugfs_list[] = {
  79        {"gem", gem_show, 0},
  80        {"mm", mm_show, 0},
  81        {"fb", fb_show, 0},
  82};
  83
  84/* list of debugfs files that are specific to devices with dmm/tiler */
  85static struct drm_info_list omap_dmm_debugfs_list[] = {
  86        {"tiler_map", tiler_map_show, 0},
  87};
  88
  89int omap_debugfs_init(struct drm_minor *minor)
  90{
  91        struct drm_device *dev = minor->dev;
  92        int ret;
  93
  94        ret = drm_debugfs_create_files(omap_debugfs_list,
  95                        ARRAY_SIZE(omap_debugfs_list),
  96                        minor->debugfs_root, minor);
  97
  98        if (ret) {
  99                dev_err(dev->dev, "could not install omap_debugfs_list\n");
 100                return ret;
 101        }
 102
 103        if (dmm_is_available())
 104                ret = drm_debugfs_create_files(omap_dmm_debugfs_list,
 105                                ARRAY_SIZE(omap_dmm_debugfs_list),
 106                                minor->debugfs_root, minor);
 107
 108        if (ret) {
 109                dev_err(dev->dev, "could not install omap_dmm_debugfs_list\n");
 110                return ret;
 111        }
 112
 113        return ret;
 114}
 115
 116void omap_debugfs_cleanup(struct drm_minor *minor)
 117{
 118        drm_debugfs_remove_files(omap_debugfs_list,
 119                        ARRAY_SIZE(omap_debugfs_list), minor);
 120        if (dmm_is_available())
 121                drm_debugfs_remove_files(omap_dmm_debugfs_list,
 122                                ARRAY_SIZE(omap_dmm_debugfs_list), minor);
 123}
 124
 125#endif
 126