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

   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
  17static 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
  31static 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
  43static 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 */
  68static 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 */
  77static struct drm_info_list omap_dmm_debugfs_list[] = {
  78        {"tiler_map", tiler_map_show, 0},
  79};
  80
  81int 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
 109