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authorDaniel Vetter <daniel.vetter@ffwll.ch>2021-06-23 18:24:56 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2021-06-24 15:39:46 +0200
commit40cfc7fce4d00f7c2152b28a1f6e7fcbb1a47ca6 (patch)
tree20b592bdfc6a56709f367d131536ebcd5896e18b /include/drm
parent942d8344d5f14b9ea2ae43756f319b9f44216ba4 (diff)
drm/simple-helper: drm_gem_simple_display_pipe_prepare_fb as default
It's tedious to review this all the time, and my audit showed that arcpgu actually forgot to set this. Make this the default and stop worrying. Again I sprinkled WARN_ON_ONCE on top to make sure we don't have strange combinations of hooks: cleanup_fb without prepare_fb doesn't make sense, and since simpler drivers are all new they better be GEM based drivers. v2: Warn and bail when it's _not_ a GEM driver (Noralf) v3: It's neither ... nor, not not (Sam) Acked-by: Sam Ravnborg <sam@ravnborg.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Noralf Trønnes <noralf@tronnes.org> Acked-by: Noralf Trønnes <noralf@tronnes.org> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20210623162456.3373469-1-daniel.vetter@ffwll.ch
Diffstat (limited to 'include/drm')
-rw-r--r--include/drm/drm_simple_kms_helper.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/include/drm/drm_simple_kms_helper.h b/include/drm/drm_simple_kms_helper.h
index ef9944e9c5fc..cf07132d4ee8 100644
--- a/include/drm/drm_simple_kms_helper.h
+++ b/include/drm/drm_simple_kms_helper.h
@@ -116,8 +116,11 @@ struct drm_simple_display_pipe_funcs {
* the documentation for the &drm_plane_helper_funcs.prepare_fb hook for
* more details.
*
- * Drivers which always have their buffers pinned should use
- * drm_gem_simple_display_pipe_prepare_fb() for this hook.
+ * For GEM drivers who neither have a @prepare_fb nor @cleanup_fb hook
+ * set drm_gem_simple_display_pipe_prepare_fb() is called automatically
+ * to implement this. Other drivers which need additional plane
+ * processing can call drm_gem_simple_display_pipe_prepare_fb() from
+ * their @prepare_fb hook.
*/
int (*prepare_fb)(struct drm_simple_display_pipe *pipe,
struct drm_plane_state *plane_state);