From effb34b720cea33f2fe895b55b84768ab460884f Mon Sep 17 00:00:00 2001
From: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Date: Tue, 5 Jul 2022 18:25:27 +0800
Subject: drm/mediatek: dpi: Add config to support direct connection to dpi
 panels
Git-commit: c83da6233d05715a1e5841aa0b874faaa8150074
Patch-mainline: v6.0-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225 jsc#PED-2849

MediaTek dpi supports direct connection to dpi panels while dp_intf does
not support. Therefore, add a config "support_direct_pin" to control this.

Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20220705102530.1344-3-rex-bc.chen@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/mediatek/mtk_dpi.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index d65e5410394a..ac1b14e84cd1 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -125,6 +125,7 @@ struct mtk_dpi_yc_limit {
  * @num_output_fmts: Quantity of supported output formats.
  * @is_ck_de_pol: Support CK/DE polarity.
  * @swap_input_support: Support input swap function.
+ * @support_direct_pin: IP supports direct connection to dpi panels.
  * @dimension_mask: Mask used for HWIDTH, HPORCH, VSYNC_WIDTH and VSYNC_PORCH
  *		    (no shift).
  * @hvsize_mask: Mask of HSIZE and VSIZE mask (no shift).
@@ -141,6 +142,7 @@ struct mtk_dpi_conf {
 	u32 num_output_fmts;
 	bool is_ck_de_pol;
 	bool swap_input_support;
+	bool support_direct_pin;
 	u32 dimension_mask;
 	u32 hvsize_mask;
 	u32 channel_swap_shift;
@@ -581,11 +583,13 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
 	mtk_dpi_config_channel_limit(dpi);
 	mtk_dpi_config_bit_num(dpi, dpi->bit_num);
 	mtk_dpi_config_channel_swap(dpi, dpi->channel_swap);
-	mtk_dpi_config_yc_map(dpi, dpi->yc_map);
 	mtk_dpi_config_color_format(dpi, dpi->color_format);
-	mtk_dpi_config_2n_h_fre(dpi);
-	mtk_dpi_dual_edge(dpi);
-	mtk_dpi_config_disable_edge(dpi);
+	if (dpi->conf->support_direct_pin) {
+		mtk_dpi_config_yc_map(dpi, dpi->yc_map);
+		mtk_dpi_config_2n_h_fre(dpi);
+		mtk_dpi_dual_edge(dpi);
+		mtk_dpi_config_disable_edge(dpi);
+	}
 	mtk_dpi_sw_reset(dpi, false);
 
 	return 0;
@@ -844,6 +848,7 @@ static const struct mtk_dpi_conf mt8173_conf = {
 	.num_output_fmts = ARRAY_SIZE(mt8173_output_fmts),
 	.is_ck_de_pol = true,
 	.swap_input_support = true,
+	.support_direct_pin = true,
 	.dimension_mask = HPW_MASK,
 	.hvsize_mask = HSIZE_MASK,
 	.channel_swap_shift = CH_SWAP,
@@ -860,6 +865,7 @@ static const struct mtk_dpi_conf mt2701_conf = {
 	.num_output_fmts = ARRAY_SIZE(mt8173_output_fmts),
 	.is_ck_de_pol = true,
 	.swap_input_support = true,
+	.support_direct_pin = true,
 	.dimension_mask = HPW_MASK,
 	.hvsize_mask = HSIZE_MASK,
 	.channel_swap_shift = CH_SWAP,
@@ -875,6 +881,7 @@ static const struct mtk_dpi_conf mt8183_conf = {
 	.num_output_fmts = ARRAY_SIZE(mt8183_output_fmts),
 	.is_ck_de_pol = true,
 	.swap_input_support = true,
+	.support_direct_pin = true,
 	.dimension_mask = HPW_MASK,
 	.hvsize_mask = HSIZE_MASK,
 	.channel_swap_shift = CH_SWAP,
@@ -890,6 +897,7 @@ static const struct mtk_dpi_conf mt8192_conf = {
 	.num_output_fmts = ARRAY_SIZE(mt8183_output_fmts),
 	.is_ck_de_pol = true,
 	.swap_input_support = true,
+	.support_direct_pin = true,
 	.dimension_mask = HPW_MASK,
 	.hvsize_mask = HSIZE_MASK,
 	.channel_swap_shift = CH_SWAP,
-- 
2.38.1