summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
authorThierry Reding <thierry.reding@avionic-design.de>2013-02-13 16:13:16 +0100
committerThierry Reding <thierry.reding@avionic-design.de>2013-02-22 08:21:37 +0100
commite450fcc6669705ef49784080ac6dd8513df37763 (patch)
tree1411de86b91f4407f3368b47b2c68ea6f6345b01 /drivers
parent84ff6b270893cd8b054bae371a315c905ffa3ac9 (diff)
drm/tegra: Add list of framebuffers to debugfs
This list is most useful to inspect whether framebuffer reference counting works as expected. The code is loosely based on the i915 implementation. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/tegra/drm.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 97485af6eaf..181a370c56c 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -143,6 +143,45 @@ static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file)
tegra_dc_cancel_page_flip(crtc, file);
}
+#ifdef CONFIG_DEBUG_FS
+static int tegra_debugfs_framebuffers(struct seq_file *s, void *data)
+{
+ struct drm_info_node *node = (struct drm_info_node *)s->private;
+ struct drm_device *drm = node->minor->dev;
+ struct drm_framebuffer *fb;
+
+ mutex_lock(&drm->mode_config.fb_lock);
+
+ list_for_each_entry(fb, &drm->mode_config.fb_list, head) {
+ seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n",
+ fb->base.id, fb->width, fb->height, fb->depth,
+ fb->bits_per_pixel,
+ atomic_read(&fb->refcount.refcount));
+ }
+
+ mutex_unlock(&drm->mode_config.fb_lock);
+
+ return 0;
+}
+
+static struct drm_info_list tegra_debugfs_list[] = {
+ { "framebuffers", tegra_debugfs_framebuffers, 0 },
+};
+
+static int tegra_debugfs_init(struct drm_minor *minor)
+{
+ return drm_debugfs_create_files(tegra_debugfs_list,
+ ARRAY_SIZE(tegra_debugfs_list),
+ minor->debugfs_root, minor);
+}
+
+static void tegra_debugfs_cleanup(struct drm_minor *minor)
+{
+ drm_debugfs_remove_files(tegra_debugfs_list,
+ ARRAY_SIZE(tegra_debugfs_list), minor);
+}
+#endif
+
struct drm_driver tegra_drm_driver = {
.driver_features = DRIVER_BUS_PLATFORM | DRIVER_MODESET | DRIVER_GEM,
.load = tegra_drm_load,
@@ -155,6 +194,11 @@ struct drm_driver tegra_drm_driver = {
.enable_vblank = tegra_drm_enable_vblank,
.disable_vblank = tegra_drm_disable_vblank,
+#if defined(CONFIG_DEBUG_FS)
+ .debugfs_init = tegra_debugfs_init,
+ .debugfs_cleanup = tegra_debugfs_cleanup,
+#endif
+
.gem_free_object = drm_gem_cma_free_object,
.gem_vm_ops = &drm_gem_cma_vm_ops,
.dumb_create = drm_gem_cma_dumb_create,