From: Raphael Gallais-Pou Date: Tue, 7 Sep 2021 15:13:23 +0000 (+0200) Subject: drm/stm: ltdc: attach immutable zpos property to planes X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ee2cda7b027753fde555eae91e0f6de7f8c3ea7d;p=linux.git drm/stm: ltdc: attach immutable zpos property to planes Defines plane ordering by hard-coding an immutable Z position from the first plane, used as primary layer, to the next ones as overlay in order of instantiation. This zpos is only an information as it is not possible to modify it, blending operations are still applied from the top to the bottom layer. This patch helps to remove a warning message from the Android Hardware Composer. Signed-off-by: Raphael Gallais-Pou Acked-by: Yannick Fertre Reviewed-by: Yannick Fertre Signed-off-by: Philippe Cornu Link: https://patchwork.freedesktop.org/patch/msgid/20210907151323.5850-1-raphael.gallais-pou@foss.st.com --- diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c index 195de30eb90c7..bd603ef5e935f 100644 --- a/drivers/gpu/drm/stm/ltdc.c +++ b/drivers/gpu/drm/stm/ltdc.c @@ -1024,6 +1024,8 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc) return -EINVAL; } + drm_plane_create_zpos_immutable_property(primary, 0); + ret = drm_crtc_init_with_planes(ddev, crtc, primary, NULL, <dc_crtc_funcs, NULL); if (ret) { @@ -1046,6 +1048,7 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc) DRM_ERROR("Can not create overlay plane %d\n", i); goto cleanup; } + drm_plane_create_zpos_immutable_property(overlay, i); } return 0;