From 78fecf032314d80a11a293f2b850c31106b4419f Mon Sep 17 00:00:00 2001 From: Josip Pavic Date: Fri, 17 Apr 2020 15:55:15 +0800 Subject: [PATCH] drm/amd/display: fix dcc swath size calculations on dcn1 [ Upstream commit a0275dfc82c9034eefbeffd556cca6dd239d7925 ] [Why] Swath sizes are being calculated incorrectly. The horizontal swath size should be the product of block height, viewport width, and bytes per element, but the calculation uses viewport height instead of width. The vertical swath size is similarly incorrectly calculated. The effect of this is that we report the wrong DCC caps. [How] Use viewport width in the horizontal swath size calculation and viewport height in the vertical swath size calculation. Signed-off-by: Josip Pavic Reviewed-by: Aric Cyr Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin Signed-off-by: Yang Yingliang --- drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c index 1ea91e153d3a..c1adac888fd8 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c @@ -684,8 +684,8 @@ static void hubbub1_det_request_size( hubbub1_get_blk256_size(&blk256_width, &blk256_height, bpe); - swath_bytes_horz_wc = height * blk256_height * bpe; - swath_bytes_vert_wc = width * blk256_width * bpe; + swath_bytes_horz_wc = width * blk256_height * bpe; + swath_bytes_vert_wc = height * blk256_width * bpe; *req128_horz_wc = (2 * swath_bytes_horz_wc <= detile_buf_size) ? false : /* full 256B request */ -- GitLab