drm/mediatek: dsi: Fix scrolling of panel with small hfp or hbp (35bf948f) · Commits · 戴 / test

horizontal_backporch_byte should be hbp * bpp - hbp extra bytes. So remove the wrong subtraction 10. Fixes: ("drm/mediatek: change the dsi phytiming calculate method") Signed-off-by:

Jitao Shi <jitao.shi@mediatek.com> Signed-off-by:

Chun-Kuang Hu <chunkuang.hu@kernel.org>

drivers/gpu/drm/mediatek/mtk_dsi.c

+4 −5

Original line number	Diff line number	Diff line
		@@ -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);

		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
		horizontal_backporch_byte =
		(vm->hback_porch * dsi_tmp_buf_bpp - 10);
		horizontal_backporch_byte = vm->hback_porch * dsi_tmp_buf_bpp;
		else
		horizontal_backporch_byte = ((vm->hback_porch + vm->hsync_len) *
		dsi_tmp_buf_bpp - 10);
		horizontal_backporch_byte = (vm->hback_porch + vm->hsync_len) *
		dsi_tmp_buf_bpp;

		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 ((vm->hfront_porch + vm->hback_porch) * dsi_tmp_buf_bpp >

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