drivers/gpu/drm/omapdrm/omap_debugfs.c

   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         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