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drm/mediatek: mtk_dpi: Add local helpers for bus format parameters

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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: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20250409131306.108635-3-angelogioacchino.delregno@collabora.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
This commit is contained in:
AngeloGioacchino Del Regno 2025-04-09 15:13:03 +02:00 committed by Chun-Kuang Hu
parent 618dfbe01a
commit c64cad81e6
1 changed files with 40 additions and 6 deletions
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46
drivers/gpu/drm/mediatek/mtk_dpi.c
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@ -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;
}