From 0f3e896df0b472bd838aa04204d606469b8ed3fc Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Tue, 28 Jul 2020 15:48:10 +0200
Subject: drm/sun4i: backend: Disable alpha on the lowest plane on the A20
Git-commit: 5e2e2600a3744491a8b49b92597c13b693692082
Patch-mainline: v5.9-rc5
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322

Unlike we previously thought, the per-pixel alpha is just as broken on the
A20 as it is on the A10. Remove the quirk that says we can use it.

Fixes: dcf496a6a608 ("drm/sun4i: sun4i: Introduce a quirk for lowest plane alpha support")
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Cc: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200728134810.883457-2-maxime@cerno.tech
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/sun4i/sun4i_backend.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.c b/drivers/gpu/drm/sun4i/sun4i_backend.c
index 30672c4c634d..ed5d86617802 100644
--- a/drivers/gpu/drm/sun4i/sun4i_backend.c
+++ b/drivers/gpu/drm/sun4i/sun4i_backend.c
@@ -994,7 +994,6 @@ static const struct sun4i_backend_quirks sun6i_backend_quirks = {
 
 static const struct sun4i_backend_quirks sun7i_backend_quirks = {
 	.needs_output_muxing = true,
-	.supports_lowest_plane_alpha = true,
 };
 
 static const struct sun4i_backend_quirks sun8i_a33_backend_quirks = {
-- 
2.29.2