linux-kernel - [PATCH AUTOSEL 6.0 36/39] drm/amd/display: Use viewport height for subvp mall allocation size

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Date:   Mon, 28 Nov 2022 12:36:16 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Dillon Varone <Dillon.Varone@....com>,
        Alvin Lee <Alvin.Lee2@....com>,
        Martin Leung <Martin.Leung@....com>,
        Brian Chang <Brian.Chang@....com>,
        Daniel Wheeler <daniel.wheeler@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>, harry.wentland@....com,
        sunpeng.li@....com, Rodrigo.Siqueira@....com,
        christian.koenig@....com, Xinhui.Pan@....com, airlied@...il.com,
        daniel@...ll.ch, Jun.Lei@....com, Syed.Hassan@....com,
        Ethan.Wellenreiter@....com, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.0 36/39] drm/amd/display: Use viewport height for subvp mall allocation size

From: Dillon Varone <Dillon.Varone@....com>

[ Upstream commit dd2c028c1395d622df7ddd6837f8ab2dc94008ee ]

[WHY?]
MALL allocation size depends on the viewport height, not the addressable
vertical lines, which will not match when scaling.

[HOW?]
Base MALL allocation size calculations off viewport height.

Reviewed-by: Alvin Lee <Alvin.Lee2@....com>
Reviewed-by: Martin Leung <Martin.Leung@....com>
Acked-by: Brian Chang <Brian.Chang@....com>
Signed-off-by: Dillon Varone <Dillon.Varone@....com>
Tested-by: Daniel Wheeler <daniel.wheeler@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
index 13cd1f2e50ca..902c69d126d5 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
@@ -101,7 +101,7 @@ uint32_t dcn32_helper_calculate_num_ways_for_subvp(struct dc *dc, struct dc_stat
 			mall_alloc_width_blk_aligned = full_vp_width_blk_aligned;
 
 			/* mall_alloc_height_blk_aligned_l/c = CEILING(sub_vp_height_l/c - 1, blk_height_l/c) + blk_height_l/c */
-			mall_alloc_height_blk_aligned = (pipe->stream->timing.v_addressable - 1 + mblk_height - 1) /
+			mall_alloc_height_blk_aligned = (pipe->plane_res.scl_data.viewport.height - 1 + mblk_height - 1) /
 					mblk_height * mblk_height + mblk_height;
 
 			/* full_mblk_width_ub_l/c = mall_alloc_width_blk_aligned_l/c;
-- 
2.35.1