On Mon, 2022-05-30 at 15:50 +0800, CK Hu wrote:
> Hi, Guillaume:
>
>
> On Mon, 2022-05-23 at 12:47 +0200, Guillaume Ranquet wrote:
> > Adds a bit of flexibility to support SoCs without swap_input
> > support
> >
> > Signed-off-by: Guillaume Ranquet <granquet@xxxxxxxxxxxx>
> > Reviewed-by: AngeloGioacchino Del Regno <
> > angelogioacchino.delregno@xxxxxxxxxxxxx>
> > Reviewed-by: Rex-BC Chen <rex-bc.chen@xxxxxxxxxxxx>
> > ---
> > drivers/gpu/drm/mediatek/mtk_dpi.c | 14 +++++++++++---
> > 1 file changed, 11 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c
> > b/drivers/gpu/drm/mediatek/mtk_dpi.c
> > index 545a1337cc89..454f8563efae 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> > @@ -126,6 +126,7 @@ struct mtk_dpi_conf {
> > const u32 *output_fmts;
> > u32 num_output_fmts;
> > bool is_ck_de_pol;
> > + bool swap_input_support;
> > const struct mtk_dpi_yc_limit *limit;
> > };
> >
> > @@ -378,18 +379,21 @@ static void
> > mtk_dpi_config_color_format(struct
> > mtk_dpi *dpi,
> > (format == MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL)) {
> > mtk_dpi_config_yuv422_enable(dpi, false);
> > mtk_dpi_config_csc_enable(dpi, true);
> > - mtk_dpi_config_swap_input(dpi, false);
> > + if (dpi->conf->swap_input_support)
> > + mtk_dpi_config_swap_input(dpi, false);
> > mtk_dpi_config_channel_swap(dpi,
> > MTK_DPI_OUT_CHANNEL_SWAP_BGR);
> > } else if ((format == MTK_DPI_COLOR_FORMAT_YCBCR_422) ||
> > (format == MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL)) {
> > mtk_dpi_config_yuv422_enable(dpi, true);
> > mtk_dpi_config_csc_enable(dpi, true);
> > - mtk_dpi_config_swap_input(dpi, true);
> > + if (dpi->conf->swap_input_support)
> > + mtk_dpi_config_swap_input(dpi, true);
>
> As [1], please keep in touch with Mediatek engineer.
>
> Regards,
> CK
>
> [1]
>
https://patchwork.kernel.org/project/linux-mediatek/patch/20220218145437.18563-8-granquet@xxxxxxxxxxxx/
>
Hello CK,
the reason is the hardware design of dp_intf does not support input
swap.
I will add this in commit message.
BRs,
Bo-Chen
> > mtk_dpi_config_channel_swap(dpi,
> > MTK_DPI_OUT_CHANNEL_SWAP_RGB);
> > } else {
> > mtk_dpi_config_yuv422_enable(dpi, false);
> > mtk_dpi_config_csc_enable(dpi, false);
> > - mtk_dpi_config_swap_input(dpi, false);
> > + if (dpi->conf->swap_input_support)
> > + mtk_dpi_config_swap_input(dpi, false);
> > mtk_dpi_config_channel_swap(dpi,
> > MTK_DPI_OUT_CHANNEL_SWAP_RGB);
> > }
> > }
> > @@ -808,6 +812,7 @@ static const struct mtk_dpi_conf mt8173_conf =
> > {
> > .output_fmts = mt8173_output_fmts,
> > .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts),
> > .is_ck_de_pol = true,
> > + .swap_input_support = true,
> > .limit = &mtk_dpi_limit,
> > };
> >
> > @@ -819,6 +824,7 @@ static const struct mtk_dpi_conf mt2701_conf =
> > {
> > .output_fmts = mt8173_output_fmts,
> > .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts),
> > .is_ck_de_pol = true,
> > + .swap_input_support = true,
> > .limit = &mtk_dpi_limit,
> > };
> >
> > @@ -829,6 +835,7 @@ static const struct mtk_dpi_conf mt8183_conf =
> > {
> > .output_fmts = mt8183_output_fmts,
> > .num_output_fmts = ARRAY_SIZE(mt8183_output_fmts),
> > .is_ck_de_pol = true,
> > + .swap_input_support = true,
> > .limit = &mtk_dpi_limit,
> > };
> >
> > @@ -839,6 +846,7 @@ static const struct mtk_dpi_conf mt8192_conf =
> > {
> > .output_fmts = mt8173_output_fmts,
> > .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts),
> > .is_ck_de_pol = true,
> > + .swap_input_support = true,
> > .limit = &mtk_dpi_limit,
> > };
> >
>
>
