Commit 35bf948f authored by Jitao Shi's avatar Jitao Shi Committed by Chun-Kuang Hu

drm/mediatek: dsi: Fix scrolling of panel with small hfp or hbp

horizontal_backporch_byte should be hbp * bpp - hbp extra bytes.
So remove the wrong subtraction 10.

Fixes: 7a5bc4e2 ("drm/mediatek: change the dsi phytiming calculate method")
Signed-off-by: default avatarJitao Shi <jitao.shi@mediatek.com>
Signed-off-by: default avatarChun-Kuang Hu <chunkuang.hu@kernel.org>
parent 9123e3a7
...@@ -466,14 +466,13 @@ static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi) ...@@ -466,14 +466,13 @@ static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi)
horizontal_sync_active_byte = (vm->hsync_len * dsi_tmp_buf_bpp - 10); horizontal_sync_active_byte = (vm->hsync_len * dsi_tmp_buf_bpp - 10);
if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
horizontal_backporch_byte = horizontal_backporch_byte = vm->hback_porch * dsi_tmp_buf_bpp;
(vm->hback_porch * dsi_tmp_buf_bpp - 10);
else else
horizontal_backporch_byte = ((vm->hback_porch + vm->hsync_len) * horizontal_backporch_byte = (vm->hback_porch + vm->hsync_len) *
dsi_tmp_buf_bpp - 10); dsi_tmp_buf_bpp;
data_phy_cycles = timing->lpx + timing->da_hs_prepare + data_phy_cycles = timing->lpx + timing->da_hs_prepare +
timing->da_hs_zero + timing->da_hs_exit + 3; timing->da_hs_zero + timing->da_hs_exit;
if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) { if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) {
if ((vm->hfront_porch + vm->hback_porch) * dsi_tmp_buf_bpp > if ((vm->hfront_porch + vm->hback_porch) * dsi_tmp_buf_bpp >
......
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