From c8090a08e08c4229daac48a382297f1fb597b5ef Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Sun, 7 Mar 2021 02:56:58 +0200
Subject: drm: xlnx: zynqmp_dpsub: Add global alpha support
Git-commit: 650f12042b85322e1459b7e49d50ae09c60e28d3
Patch-mainline: v5.15-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
The graphics plane has a global alpha setting. Expose it through the
plane's alpha property.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/xlnx/zynqmp_disp.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
index 27b3829fb7e0..d87af7cb3340 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
@@ -1164,7 +1164,8 @@ zynqmp_disp_plane_atomic_disable(struct drm_plane *plane,
zynqmp_disp_layer_disable(layer);
if (zynqmp_disp_layer_is_gfx(layer))
- zynqmp_disp_blend_set_global_alpha(layer->disp, false, 0);
+ zynqmp_disp_blend_set_global_alpha(layer->disp, false,
+ plane->state->alpha >> 8);
}
static void
@@ -1195,7 +1196,8 @@ 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);
+ zynqmp_disp_blend_set_global_alpha(layer->disp, true,
+ plane->state->alpha >> 8);
/* Enable or re-enable the plane is the format has changed. */
if (format_changed)
@@ -1249,6 +1251,9 @@ static int zynqmp_disp_create_planes(struct zynqmp_disp *disp)
drm_plane_helper_add(&layer->plane,
&zynqmp_disp_plane_helper_funcs);
+
+ if (zynqmp_disp_layer_is_gfx(layer))
+ drm_plane_create_alpha_property(&layer->plane);
}
return 0;
--
2.38.1