From a0a76244760d8b72ba1bb9c6998e41f5d286d6aa Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Tue, 11 Jun 2019 17:13:04 +1000
Subject: drm/nouveau/kms/gv100-: attach alpha property to planes
Git-commit: a0a76244760d8b72ba1bb9c6998e41f5d286d6aa
Patch-mainline: v5.4-rc1
References: bsc#1152489

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/nouveau/dispnv50/atom.h     | 1 +
 drivers/gpu/drm/nouveau/dispnv50/wndw.c     | 5 +++++
 drivers/gpu/drm/nouveau/dispnv50/wndwc37e.c | 2 +-
 3 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/dispnv50/atom.h b/drivers/gpu/drm/nouveau/dispnv50/atom.h
index 3192f067d291..973074403f3c 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/atom.h
+++ b/drivers/gpu/drm/nouveau/dispnv50/atom.h
@@ -223,6 +223,7 @@ struct nv50_wndw_atom {
 
 	struct {
 		u8 depth;
+		u8 k1;
 	} blend;
 
 	union nv50_wndw_atom_mask {
diff --git a/drivers/gpu/drm/nouveau/dispnv50/wndw.c b/drivers/gpu/drm/nouveau/dispnv50/wndw.c
index 10fcd4e1e44c..76c69c6eca77 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/wndw.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/wndw.c
@@ -288,6 +288,7 @@ nv50_wndw_atomic_check_acquire(struct nv50_wndw *wndw, bool modeset,
 
 	if (wndw->func->blend_set) {
 		asyw->blend.depth = 255 - asyw->state.normalized_zpos;
+		asyw->blend.k1 = asyw->state.alpha >> 8;
 		if (memcmp(&armw->blend, &asyw->blend, sizeof(asyw->blend)))
 			asyw->set.blend = true;
 	}
@@ -656,6 +657,10 @@ nv50_wndw_new_(const struct nv50_wndw_func *func, struct drm_device *dev,
 				nv50_wndw_zpos_default(&wndw->plane), 0, 254);
 		if (ret)
 			return ret;
+
+		ret = drm_plane_create_alpha_property(&wndw->plane);
+		if (ret)
+			return ret;
 	} else {
 		ret = drm_plane_create_zpos_immutable_property(&wndw->plane,
 				nv50_wndw_zpos_default(&wndw->plane));
diff --git a/drivers/gpu/drm/nouveau/dispnv50/wndwc37e.c b/drivers/gpu/drm/nouveau/dispnv50/wndwc37e.c
index 4d2d54a8c659..3c6d64d1b708 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/wndwc37e.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/wndwc37e.c
@@ -88,7 +88,7 @@ wndwc37e_blend_set(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw)
 	if ((push = evo_wait(&wndw->wndw, 8))) {
 		evo_mthd(push, 0x02ec, 7);
 		evo_data(push, asyw->blend.depth << 4);
-		evo_data(push, 0x000000ff);
+		evo_data(push, asyw->blend.k1);
 		evo_data(push, 0x00007722);
 		evo_data(push, 0xffff0000);
 		evo_data(push, 0xffff0000);
-- 
2.28.0