[PATCH v2 1/3] drm: xlnx: zynqmp_dpsub: Fix graphics layer blending
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: 2021-05-20 12:21:44
Also in:
dri-devel
Subsystem:
drm drivers, drm drivers and misc gpu patches, drm drivers for xilinx, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Laurent Pinchart, Tomi Valkeinen, Linus Torvalds
To display the graphics layer, the global alpha needs to be enabled. Enable it when the graphics plane is enabled (with full opacity), and disable it otherwise. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> --- drivers/gpu/drm/xlnx/zynqmp_disp.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
index a061a75a9de7..27b3829fb7e0 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c@@ -415,6 +415,11 @@ static void zynqmp_disp_avbuf_write(struct zynqmp_disp *disp, int reg, u32 val) writel(val, disp->avbuf.base + reg); } +static bool zynqmp_disp_layer_is_gfx(const struct zynqmp_disp_layer *layer) +{ + return layer->id == ZYNQMP_DISP_LAYER_GFX; +} + static bool zynqmp_disp_layer_is_video(const struct zynqmp_disp_layer *layer) { return layer->id == ZYNQMP_DISP_LAYER_VID;
@@ -1157,6 +1162,9 @@ zynqmp_disp_plane_atomic_disable(struct drm_plane *plane, return; zynqmp_disp_layer_disable(layer); + + if (zynqmp_disp_layer_is_gfx(layer)) + zynqmp_disp_blend_set_global_alpha(layer->disp, false, 0); } static void
@@ -1186,6 +1194,9 @@ zynqmp_disp_plane_atomic_update(struct drm_plane *plane, zynqmp_disp_layer_update(layer, new_state); + if (zynqmp_disp_layer_is_gfx(layer)) + zynqmp_disp_blend_set_global_alpha(layer->disp, true, 255); + /* Enable or re-enable the plane is the format has changed. */ if (format_changed) zynqmp_disp_layer_enable(layer);
@@ -1447,7 +1458,6 @@ zynqmp_disp_crtc_atomic_enable(struct drm_crtc *crtc, zynqmp_disp_blend_set_output_format(disp, ZYNQMP_DPSUB_FORMAT_RGB); zynqmp_disp_blend_set_bg_color(disp, 0, 0, 0); - zynqmp_disp_blend_set_global_alpha(disp, false, 0); zynqmp_disp_enable(disp);
--
Regards,
Laurent Pinchart
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