From 44d1240d006c9cd0249263b5449c8e4752500f6a Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Mon, 13 Jun 2016 11:11:26 +0200 Subject: drm: add generic zpos property MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit version 8: - move drm_blend.o from drm-y to drm_kms_helper-y to avoid EXPORT_SYMBOL(drm_atomic_helper_normalize_zpos) - remove dead function declarations in drm_crtc.h version 7: - remove useless EXPORT_SYMBOL() - better z-order wording in Documentation version 6: - add zpos in gpu documentation file - merge Ville patch about zpos initial value and API improvement. I have split Ville patch between zpos core and drivers version 5: - remove zpos range check and comeback to 0 to N-1 normalization algorithm version 4: - make sure that normalized zpos value is stay in the defined property range and warn user if not This patch adds support for generic plane's zpos property property with well-defined semantics: - added zpos properties to plane and plane state structures - added helpers for normalizing zpos properties of given set of planes - well defined semantics: planes are sorted by zpos values and then plane id value if zpos equals Normalized zpos values are calculated automatically when generic muttable zpos property has been initialized. Drivers can simply use plane_state->normalized_zpos in their atomic_check and/or plane_update callbacks without any additional calls to DRM core. Signed-off-by: Marek Szyprowski Compare to Marek's original patch zpos property is now specific to each plane and no more to the core. Normalize function take care of the range of per plane defined range before set normalized_zpos. Signed-off-by: Benjamin Gaignard Reviewed-by: Ville Syrjälä Acked-by: Laurent Pinchart Tested-by: Laurent Pinchart Cc: Inki Dae Cc: Daniel Vetter Cc: Ville Syrjala Cc: Joonyoung Shim Cc: Seung-Woo Kim Cc: Andrzej Hajda Cc: Krzysztof Kozlowski Cc: Bartlomiej Zolnierkiewicz Cc: Tobias Jakobi Cc: Gustavo Padovan Cc: vincent.abriou@st.com Cc: fabien.dessenne@st.com Cc: Laurent Pinchart --- drivers/gpu/drm/drm_crtc_internal.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/gpu/drm/drm_crtc_internal.h') diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h index 47a500b90fd7..0c34e6d906d1 100644 --- a/drivers/gpu/drm/drm_crtc_internal.h +++ b/drivers/gpu/drm/drm_crtc_internal.h @@ -128,3 +128,7 @@ int drm_mode_atomic_ioctl(struct drm_device *dev, int drm_modeset_register_all(struct drm_device *dev); void drm_modeset_unregister_all(struct drm_device *dev); + +/* drm_blend.c */ +int drm_atomic_helper_normalize_zpos(struct drm_device *dev, + struct drm_atomic_state *state); -- cgit v1.2.3-59-g8ed1b