drivers/gpu/drm/omapdrm/omap_debugfs.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
   4  * Author: Rob Clark <rob.clark@linaro.org>
   5  */
   6
   7 #include <linux/seq_file.h>
   8
   9 #include <drm/drm_crtc.h>
  10 #include <drm/drm_fb_helper.h>
  11
  12 #include "omap_drv.h"
  13 #include "omap_dmm_tiler.h"
  14
  15 #ifdef CONFIG_DEBUG_FS
  16
  17 static int gem_show(struct seq_file *m, void *arg)
  18 {
  19         struct drm_info_node *node = (struct drm_info_node *) m->private;
  20         struct drm_device *dev = node->minor->dev;
  21         struct omap_drm_private *priv = dev->dev_private;
  22
  23         seq_printf(m, "All Objects:\n");
  24         mutex_lock(&priv->list_lock);
  25         omap_gem_describe_objects(&priv->obj_list, m);
  26         mutex_unlock(&priv->list_lock);
  27
  28         return 0;
  29 }
  30
  31 static int mm_show(struct seq_file *m, void *arg)
  32 {
  33         struct drm_info_node *node = (struct drm_info_node *) m->private;
  34         struct drm_device *dev = node->minor->dev;
  35         struct drm_printer p = drm_seq_file_printer(m);
  36
  37         drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p);
  38
  39         return 0;
  40 }
  41
  42 #ifdef CONFIG_DRM_FBDEV_EMULATION
  43 static int fb_show(struct seq_file *m, void *arg)
  44 {
  45         struct drm_info_node *node = (struct drm_info_node *) m->private;
  46         struct drm_device *dev = node->minor->dev;
  47         struct omap_drm_private *priv = dev->dev_private;
  48         struct drm_framebuffer *fb;
  49
  50         seq_printf(m, "fbcon ");
  51         omap_framebuffer_describe(priv->fbdev->fb, m);
  52
  53         mutex_lock(&dev->mode_config.fb_lock);
  54         list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
  55                 if (fb == priv->fbdev->fb)
  56                         continue;
  57
  58                 seq_printf(m, "user ");
  59                 omap_framebuffer_describe(fb, m);
  60         }
  61         mutex_unlock(&dev->mode_config.fb_lock);
  62
  63         return 0;
  64 }
  65 #endif
  66
  67 /* list of debufs files that are applicable to all devices */
  68 static struct drm_info_list omap_debugfs_list[] = {
  69         {"gem", gem_show, 0},
  70         {"mm", mm_show, 0},
  71 #ifdef CONFIG_DRM_FBDEV_EMULATION
  72         {"fb", fb_show, 0},
  73 #endif
  74 };
  75
  76 /* list of debugfs files that are specific to devices with dmm/tiler */
  77 static struct drm_info_list omap_dmm_debugfs_list[] = {
  78         {"tiler_map", tiler_map_show, 0},
  79 };
  80
  81 int omap_debugfs_init(struct drm_minor *minor)
  82 {
  83         struct drm_device *dev = minor->dev;
  84         int ret;
  85
  86         ret = drm_debugfs_create_files(omap_debugfs_list,
  87                         ARRAY_SIZE(omap_debugfs_list),
  88                         minor->debugfs_root, minor);
  89
  90         if (ret) {
  91                 dev_err(dev->dev, "could not install omap_debugfs_list\n");
  92                 return ret;
  93         }
  94
  95         if (dmm_is_available())
  96                 ret = drm_debugfs_create_files(omap_dmm_debugfs_list,
  97                                 ARRAY_SIZE(omap_dmm_debugfs_list),
  98                                 minor->debugfs_root, minor);
  99
 100         if (ret) {
 101                 dev_err(dev->dev, "could not install omap_dmm_debugfs_list\n");
 102                 return ret;
 103         }
 104
 105         return ret;
 106 }
 107
 108 #endif