Commit c64cad81 authored by AngeloGioacchino Del Regno's avatar AngeloGioacchino Del Regno Committed by Chun-Kuang Hu
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drm/mediatek: mtk_dpi: Add local helpers for bus format parameters 



In preparation for adding support for additional color formats,
add local helpers to map media bus format parameters to this
driver's bit_num, channel_swap and color_format.

This commit brings no functional changes.

Signed-off-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: default avatarCK Hu <ck.hu@mediatek.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20250409131306.108635-3-angelogioacchino.delregno@collabora.com/


Signed-off-by: default avatarChun-Kuang Hu <chunkuang.hu@kernel.org>
parent 618dfbe0

drivers/gpu/drm/mediatek/mtk_dpi.c

+40 −6
Original line number Diff line number Diff line
@@ -738,6 +738,43 @@ static u32 *mtk_dpi_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge, 
	return input_fmts;

}



static unsigned int mtk_dpi_bus_fmt_bit_num(unsigned int out_bus_format)

{

	switch (out_bus_format) {

	default:

	case MEDIA_BUS_FMT_RGB888_1X24:

	case MEDIA_BUS_FMT_RGB888_2X12_LE:

	case MEDIA_BUS_FMT_RGB888_2X12_BE:

	case MEDIA_BUS_FMT_YUYV8_1X16:

		return MTK_DPI_OUT_BIT_NUM_8BITS;

	}

}



static unsigned int mtk_dpi_bus_fmt_channel_swap(unsigned int out_bus_format)

{

	switch (out_bus_format) {

	default:

	case MEDIA_BUS_FMT_RGB888_1X24:

	case MEDIA_BUS_FMT_RGB888_2X12_LE:

	case MEDIA_BUS_FMT_RGB888_2X12_BE:

	case MEDIA_BUS_FMT_YUYV8_1X16:

		return MTK_DPI_OUT_CHANNEL_SWAP_RGB;

	}

}



static unsigned int mtk_dpi_bus_fmt_color_format(unsigned int out_bus_format)

{

	switch (out_bus_format) {

	default:

	case MEDIA_BUS_FMT_RGB888_1X24:

	case MEDIA_BUS_FMT_RGB888_2X12_LE:

	case MEDIA_BUS_FMT_RGB888_2X12_BE:

		return MTK_DPI_COLOR_FORMAT_RGB;

	case MEDIA_BUS_FMT_YUYV8_1X16:

		return MTK_DPI_COLOR_FORMAT_YCBCR_422;

	}

}



static int mtk_dpi_bridge_atomic_check(struct drm_bridge *bridge,

				       struct drm_bridge_state *bridge_state,

				       struct drm_crtc_state *crtc_state,
@@ -757,13 +794,10 @@ static int mtk_dpi_bridge_atomic_check(struct drm_bridge *bridge, 
		bridge_state->output_bus_cfg.format);



	dpi->output_fmt = out_bus_format;

	dpi->bit_num = MTK_DPI_OUT_BIT_NUM_8BITS;

	dpi->channel_swap = MTK_DPI_OUT_CHANNEL_SWAP_RGB;

	dpi->bit_num = mtk_dpi_bus_fmt_bit_num(out_bus_format);

	dpi->channel_swap = mtk_dpi_bus_fmt_channel_swap(out_bus_format);

	dpi->yc_map = MTK_DPI_OUT_YC_MAP_RGB;

	if (out_bus_format == MEDIA_BUS_FMT_YUYV8_1X16)

		dpi->color_format = MTK_DPI_COLOR_FORMAT_YCBCR_422;

	else

		dpi->color_format = MTK_DPI_COLOR_FORMAT_RGB;

	dpi->color_format = mtk_dpi_bus_fmt_color_format(out_bus_format);



	return 0;

}