42 lines
1.6 KiB
Diff
42 lines
1.6 KiB
Diff
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From 51109530891c981b681816152bd205724deabcca Mon Sep 17 00:00:00 2001
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From: Jitao Shi <jitao.shi@mediatek.com>
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Date: Sat, 10 Oct 2020 15:09:09 +0800
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Subject: [PATCH] Revert "drm/mediatek: dsi: Fix scrolling of panel with small
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hfp or hbp"
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This reverts commit 35bf948f1edbf507f6e57e0879fa6ea36d2d2930.
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Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
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Reviewed-by: Bilal Wasim <bilal.wasim@imgtec.com>
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Tested-by: Bilal Wasim <bilal.wasim@imgtec.com>
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---
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drivers/gpu/drm/mediatek/mtk_dsi.c | 9 +++++----
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1 file changed, 5 insertions(+), 4 deletions(-)
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diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
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index 80b7a082e874..16fd99dcdacf 100644
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--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
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+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
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@@ -466,13 +466,14 @@ static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi)
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horizontal_sync_active_byte = (vm->hsync_len * dsi_tmp_buf_bpp - 10);
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if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
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- horizontal_backporch_byte = vm->hback_porch * dsi_tmp_buf_bpp;
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+ horizontal_backporch_byte =
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+ (vm->hback_porch * dsi_tmp_buf_bpp - 10);
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else
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- horizontal_backporch_byte = (vm->hback_porch + vm->hsync_len) *
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- dsi_tmp_buf_bpp;
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+ horizontal_backporch_byte = ((vm->hback_porch + vm->hsync_len) *
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+ dsi_tmp_buf_bpp - 10);
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data_phy_cycles = timing->lpx + timing->da_hs_prepare +
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- timing->da_hs_zero + timing->da_hs_exit;
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+ timing->da_hs_zero + timing->da_hs_exit + 3;
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if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) {
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if ((vm->hfront_porch + vm->hback_porch) * dsi_tmp_buf_bpp >
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--
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2.25.1
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