linux-kernel - [PATCH v16 2/5] drm/mediatek: dpi: add config to support direct connection to dpi panels

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Date:   Tue, 5 Jul 2022 18:25:27 +0800
From:   Bo-Chen Chen <rex-bc.chen@...iatek.com>
To:     <chunkuang.hu@...nel.org>, <p.zabel@...gutronix.de>,
        <daniel@...ll.ch>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <matthias.bgg@...il.com>,
        <airlied@...ux.ie>
CC:     <msp@...libre.com>, <granquet@...libre.com>,
        <jitao.shi@...iatek.com>, <wenst@...omium.org>,
        <angelogioacchino.delregno@...labora.com>, <ck.hu@...iatek.com>,
        <xinlei.lee@...iatek.com>, <liangxu.xu@...iatek.com>,
        <dri-devel@...ts.freedesktop.org>,
        <linux-mediatek@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        Bo-Chen Chen <rex-bc.chen@...iatek.com>
Subject: [PATCH v16 2/5] drm/mediatek: dpi: add config to support direct connection to dpi panels

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@...iatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Reviewed-by: CK Hu <ck.hu@...iatek.com>
---
 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 79060f272e4a..da7b2c72881b 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -123,6 +123,7 @@ 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).
@@ -139,6 +140,7 @@ 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;
@@ -580,11 +582,13 @@ 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;
@@ -843,6 +847,7 @@ 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,
@@ -859,6 +864,7 @@ 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,
@@ -874,6 +880,7 @@ 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,
@@ -889,6 +896,7 @@ 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,
-- 
2.18.0