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@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>

diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index 5ee7420..fcdd050 100644 (file)
--- 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;
@@ -579,11 +581,13 @@ 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;
@@ -842,6 +846,7 @@ 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,
@@ -858,6 +863,7 @@ 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,
@@ -873,6 +879,7 @@ 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,
@@ -888,6 +895,7 @@ 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,