Add drm_gem_fb_debugfs_show() function to provide a debugfs representation of the framebuffer and GEM object(s).
Signed-off-by: Noralf Trønnes noralf@tronnes.org --- drivers/gpu/drm/drm_gem_framebuffer_helper.c | 45 ++++++++++++++++++++++++++++ include/drm/drm_gem_framebuffer_helper.h | 6 ++++ 2 files changed, 51 insertions(+)
diff --git a/drivers/gpu/drm/drm_gem_framebuffer_helper.c b/drivers/gpu/drm/drm_gem_framebuffer_helper.c index fc7e995..054eee0 100644 --- a/drivers/gpu/drm/drm_gem_framebuffer_helper.c +++ b/drivers/gpu/drm/drm_gem_framebuffer_helper.c @@ -245,6 +245,51 @@ int drm_gem_fb_prepare_fb(struct drm_plane *plane, } EXPORT_SYMBOL_GPL(drm_gem_fb_prepare_fb);
+#ifdef CONFIG_DEBUG_FS +static void drm_gem_fb_describe(struct drm_framebuffer *fb, struct seq_file *m) +{ + struct drm_gem_object *obj; + unsigned int i; + + seq_printf(m, "[FB:%d] %dx%d@%4.4s\n", fb->base.id, fb->width, + fb->height, (char *)&fb->format->format); + + for (i = 0; i < fb->format->num_planes; i++) { + obj = fb->obj[i]; + seq_printf(m, "\t%u: offset=%d pitch=%d, GEM: name=%d", + i, fb->offsets[i], fb->pitches[i], obj->name); + seq_printf(m, " refcount=%d start=%08lx size=%zu%s\n", + kref_read(&obj->refcount), + drm_vma_node_start(&obj->vma_node), obj->size, + obj->import_attach ? " (imported)" : ""); + } +} + +/** + * drm_gem_fb_debugfs_show() - Helper to list GEM backed framebuffer objects + * in debugfs. + * @m: Output file + * @arg: Private data for the callback + * + * This function gives a debugfs representation of the framebuffers with their + * backing GEM objects. See drm_debugfs_create_files() for more info. + */ +int drm_gem_fb_debugfs_show(struct seq_file *m, void *arg) +{ + struct drm_info_node *node = m->private; + struct drm_device *dev = node->minor->dev; + struct drm_framebuffer *fb; + + mutex_lock(&dev->mode_config.fb_lock); + drm_for_each_fb(fb, dev) + drm_gem_fb_describe(fb, m); + mutex_unlock(&dev->mode_config.fb_lock); + + return 0; +} +EXPORT_SYMBOL_GPL(drm_gem_fb_debugfs_show); +#endif + /** * drm_gem_fbdev_fb_create - Create a drm_framebuffer for fbdev emulation * @dev: DRM device diff --git a/include/drm/drm_gem_framebuffer_helper.h b/include/drm/drm_gem_framebuffer_helper.h index 5ca7cdc..1bb73d9 100644 --- a/include/drm/drm_gem_framebuffer_helper.h +++ b/include/drm/drm_gem_framebuffer_helper.h @@ -28,6 +28,12 @@ drm_gem_fb_create(struct drm_device *dev, struct drm_file *file, int drm_gem_fb_prepare_fb(struct drm_plane *plane, struct drm_plane_state *state);
+#ifdef CONFIG_DEBUG_FS +struct seq_file; + +int drm_gem_fb_debugfs_show(struct seq_file *m, void *arg); +#endif + struct drm_framebuffer * drm_gem_fbdev_fb_create(struct drm_device *dev, struct drm_fb_helper_surface_size *sizes,