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 <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
 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->vma_offset_manager->vm_addr_space_mm);
 52}
 53
 54#ifdef CONFIG_DRM_FBDEV_EMULATION
 55static int fb_show(struct seq_file *m, void *arg)
 56{
 57	struct drm_info_node *node = (struct drm_info_node *) m->private;
 58	struct drm_device *dev = node->minor->dev;
 59	struct omap_drm_private *priv = dev->dev_private;
 60	struct drm_framebuffer *fb;
 61
 62	seq_printf(m, "fbcon ");
 63	omap_framebuffer_describe(priv->fbdev->fb, m);
 64
 65	mutex_lock(&dev->mode_config.fb_lock);
 66	list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
 67		if (fb == priv->fbdev->fb)
 68			continue;
 69
 70		seq_printf(m, "user ");
 71		omap_framebuffer_describe(fb, m);
 72	}
 73	mutex_unlock(&dev->mode_config.fb_lock);
 74
 75	return 0;
 76}
 77#endif
 78
 79/* list of debufs files that are applicable to all devices */
 80static struct drm_info_list omap_debugfs_list[] = {
 81	{"gem", gem_show, 0},
 82	{"mm", mm_show, 0},
 83#ifdef CONFIG_DRM_FBDEV_EMULATION
 84	{"fb", fb_show, 0},
 85#endif
 86};
 87
 88/* list of debugfs files that are specific to devices with dmm/tiler */
 89static struct drm_info_list omap_dmm_debugfs_list[] = {
 90	{"tiler_map", tiler_map_show, 0},
 91};
 92
 93int omap_debugfs_init(struct drm_minor *minor)
 94{
 95	struct drm_device *dev = minor->dev;
 96	int ret;
 97
 98	ret = drm_debugfs_create_files(omap_debugfs_list,
 99			ARRAY_SIZE(omap_debugfs_list),
100			minor->debugfs_root, minor);
101
102	if (ret) {
103		dev_err(dev->dev, "could not install omap_debugfs_list\n");
104		return ret;
105	}
106
107	if (dmm_is_available())
108		ret = drm_debugfs_create_files(omap_dmm_debugfs_list,
109				ARRAY_SIZE(omap_dmm_debugfs_list),
110				minor->debugfs_root, minor);
111
112	if (ret) {
113		dev_err(dev->dev, "could not install omap_dmm_debugfs_list\n");
114		return ret;
115	}
116
117	return ret;
118}
119
120void omap_debugfs_cleanup(struct drm_minor *minor)
121{
122	drm_debugfs_remove_files(omap_debugfs_list,
123			ARRAY_SIZE(omap_debugfs_list), minor);
124	if (dmm_is_available())
125		drm_debugfs_remove_files(omap_dmm_debugfs_list,
126				ARRAY_SIZE(omap_dmm_debugfs_list), minor);
127}
128
129#endif