[PATCH] drm/mediatek: mtk_dpi: Reorder output formats on MT8195/88

[PATCH] drm/mediatek: mtk_dpi: Reorder output formats on MT8195/88

[Louis-Alexis Eyraud]

Reorder output format arrays in both MT8195 DPI and DP_INTF block
configuration by decreasing preference order instead of alphanumeric
one, as expected by the atomic_get_output_bus_fmts callback function
of drm_bridge controls, so the RGB ones are used first during the
bus format negotiation process.

Fixes: 20fa6a8fc588 ("drm/mediatek: mtk_dpi: Allow additional output formats on MT8195/88")
Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>
---
 drivers/gpu/drm/mediatek/mtk_dpi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index 6fb85bc6487a019cdcdb3770dc06a1deab8d5bda..a2fdceadf209f6d2166e7523b82ca18c82c7d435 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -1095,7 +1095,6 @@ static const u32 mt8183_output_fmts[] = {
 };
 
 static const u32 mt8195_dpi_output_fmts[] = {
-	MEDIA_BUS_FMT_BGR888_1X24,
 	MEDIA_BUS_FMT_RGB888_1X24,
 	MEDIA_BUS_FMT_RGB888_2X12_LE,
 	MEDIA_BUS_FMT_RGB888_2X12_BE,
@@ -1103,18 +1102,19 @@ static const u32 mt8195_dpi_output_fmts[] = {
 	MEDIA_BUS_FMT_YUYV8_1X16,
 	MEDIA_BUS_FMT_YUYV10_1X20,
 	MEDIA_BUS_FMT_YUYV12_1X24,
+	MEDIA_BUS_FMT_BGR888_1X24,
 	MEDIA_BUS_FMT_YUV8_1X24,
 	MEDIA_BUS_FMT_YUV10_1X30,
 };
 
 static const u32 mt8195_dp_intf_output_fmts[] = {
-	MEDIA_BUS_FMT_BGR888_1X24,
 	MEDIA_BUS_FMT_RGB888_1X24,
 	MEDIA_BUS_FMT_RGB888_2X12_LE,
 	MEDIA_BUS_FMT_RGB888_2X12_BE,
 	MEDIA_BUS_FMT_RGB101010_1X30,
 	MEDIA_BUS_FMT_YUYV8_1X16,
 	MEDIA_BUS_FMT_YUYV10_1X20,
+	MEDIA_BUS_FMT_BGR888_1X24,
 	MEDIA_BUS_FMT_YUV8_1X24,
 	MEDIA_BUS_FMT_YUV10_1X30,
 };

---
base-commit: b3bded85d838336326ce78e394e7818445e11f20
change-id: 20250606-mtk_dpi-mt8195-fix-wrong-color-5aab0f6d2d27

Best regards,
-- 
Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>

Re: [PATCH] drm/mediatek: mtk_dpi: Reorder output formats on MT8195/88

[AngeloGioacchino Del Regno]

Il 06/06/25 14:50, Louis-Alexis Eyraud ha scritto:
> Reorder output format arrays in both MT8195 DPI and DP_INTF block
> configuration by decreasing preference order instead of alphanumeric
> one, as expected by the atomic_get_output_bus_fmts callback function
> of drm_bridge controls, so the RGB ones are used first during the
> bus format negotiation process.
> 
> Fixes: 20fa6a8fc588 ("drm/mediatek: mtk_dpi: Allow additional output formats on MT8195/88")
> Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>

Well actually there is a way to make this still behave while having those
alphabetically sorted, which I was thinking that was already properly implemented
for MediaTek drivers.

Apparently it's not true for *all* of them... but then, just keeping things ordered
by preference is a simpler solution and probably the best one for now.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Re: [PATCH] drm/mediatek: mtk_dpi: Reorder output formats on MT8195/88

[CK Hu (胡俊光)]

On Fri, 2025-06-06 at 14:50 +0200, Louis-Alexis Eyraud wrote:
> External email : Please do not click links or open attachments until you have verified the sender or the content.
> 
> 
> Reorder output format arrays in both MT8195 DPI and DP_INTF block
> configuration by decreasing preference order instead of alphanumeric
> one, as expected by the atomic_get_output_bus_fmts callback function
> of drm_bridge controls, so the RGB ones are used first during the
> bus format negotiation process.

Reviewed-by: CK Hu <ck.hu@mediatek.com>

> 
> Fixes: 20fa6a8fc588 ("drm/mediatek: mtk_dpi: Allow additional output formats on MT8195/88")
> Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_dpi.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
> index 6fb85bc6487a019cdcdb3770dc06a1deab8d5bda..a2fdceadf209f6d2166e7523b82ca18c82c7d435 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> @@ -1095,7 +1095,6 @@ static const u32 mt8183_output_fmts[] = {
>  };
> 
>  static const u32 mt8195_dpi_output_fmts[] = {
> -       MEDIA_BUS_FMT_BGR888_1X24,
>         MEDIA_BUS_FMT_RGB888_1X24,
>         MEDIA_BUS_FMT_RGB888_2X12_LE,
>         MEDIA_BUS_FMT_RGB888_2X12_BE,
> @@ -1103,18 +1102,19 @@ static const u32 mt8195_dpi_output_fmts[] = {
>         MEDIA_BUS_FMT_YUYV8_1X16,
>         MEDIA_BUS_FMT_YUYV10_1X20,
>         MEDIA_BUS_FMT_YUYV12_1X24,
> +       MEDIA_BUS_FMT_BGR888_1X24,
>         MEDIA_BUS_FMT_YUV8_1X24,
>         MEDIA_BUS_FMT_YUV10_1X30,
>  };
> 
>  static const u32 mt8195_dp_intf_output_fmts[] = {
> -       MEDIA_BUS_FMT_BGR888_1X24,
>         MEDIA_BUS_FMT_RGB888_1X24,
>         MEDIA_BUS_FMT_RGB888_2X12_LE,
>         MEDIA_BUS_FMT_RGB888_2X12_BE,
>         MEDIA_BUS_FMT_RGB101010_1X30,
>         MEDIA_BUS_FMT_YUYV8_1X16,
>         MEDIA_BUS_FMT_YUYV10_1X20,
> +       MEDIA_BUS_FMT_BGR888_1X24,
>         MEDIA_BUS_FMT_YUV8_1X24,
>         MEDIA_BUS_FMT_YUV10_1X30,
>  };
> 
> ---
> base-commit: b3bded85d838336326ce78e394e7818445e11f20
> change-id: 20250606-mtk_dpi-mt8195-fix-wrong-color-5aab0f6d2d27
> 
> Best regards,
> --
> Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>
> 

Re: [PATCH] drm/mediatek: mtk_dpi: Reorder output formats on MT8195/88

[Chun-Kuang Hu]

Hi, Louis:

Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com> 於 2025年6月6日 週五 下午8:52寫道：
>
> Reorder output format arrays in both MT8195 DPI and DP_INTF block
> configuration by decreasing preference order instead of alphanumeric
> one, as expected by the atomic_get_output_bus_fmts callback function
> of drm_bridge controls, so the RGB ones are used first during the
> bus format negotiation process.

Applied to mediatek-drm-fixes [1], thanks.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git/log/?h=mediatek-drm-fixes

Regards,
Chun-Kuang.

>
> Fixes: 20fa6a8fc588 ("drm/mediatek: mtk_dpi: Allow additional output formats on MT8195/88")
> Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_dpi.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
> index 6fb85bc6487a019cdcdb3770dc06a1deab8d5bda..a2fdceadf209f6d2166e7523b82ca18c82c7d435 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> @@ -1095,7 +1095,6 @@ static const u32 mt8183_output_fmts[] = {
>  };
>
>  static const u32 mt8195_dpi_output_fmts[] = {
> -       MEDIA_BUS_FMT_BGR888_1X24,
>         MEDIA_BUS_FMT_RGB888_1X24,
>         MEDIA_BUS_FMT_RGB888_2X12_LE,
>         MEDIA_BUS_FMT_RGB888_2X12_BE,
> @@ -1103,18 +1102,19 @@ static const u32 mt8195_dpi_output_fmts[] = {
>         MEDIA_BUS_FMT_YUYV8_1X16,
>         MEDIA_BUS_FMT_YUYV10_1X20,
>         MEDIA_BUS_FMT_YUYV12_1X24,
> +       MEDIA_BUS_FMT_BGR888_1X24,
>         MEDIA_BUS_FMT_YUV8_1X24,
>         MEDIA_BUS_FMT_YUV10_1X30,
>  };
>
>  static const u32 mt8195_dp_intf_output_fmts[] = {
> -       MEDIA_BUS_FMT_BGR888_1X24,
>         MEDIA_BUS_FMT_RGB888_1X24,
>         MEDIA_BUS_FMT_RGB888_2X12_LE,
>         MEDIA_BUS_FMT_RGB888_2X12_BE,
>         MEDIA_BUS_FMT_RGB101010_1X30,
>         MEDIA_BUS_FMT_YUYV8_1X16,
>         MEDIA_BUS_FMT_YUYV10_1X20,
> +       MEDIA_BUS_FMT_BGR888_1X24,
>         MEDIA_BUS_FMT_YUV8_1X24,
>         MEDIA_BUS_FMT_YUV10_1X30,
>  };
>
> ---
> base-commit: b3bded85d838336326ce78e394e7818445e11f20
> change-id: 20250606-mtk_dpi-mt8195-fix-wrong-color-5aab0f6d2d27
>
> Best regards,
> --
> Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>
>