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| author | Hsiao Chien Sung <shawn.sung@mediatek.com> | 2024-06-20 00:38:53 +0800 |
|---|---|---|
| committer | Chun-Kuang Hu <chunkuang.hu@kernel.org> | 2024-06-20 13:57:36 +0000 |
| commit | bc46eb5d5d7780782c70c7915f59ed25a908d550 (patch) | |
| tree | 4cc8b7717cf8efe2aa148ded52d2cbfa9f564f42 | |
| parent | 2606aac50dfb6aed48dca40560fe7e3ff349a1b5 (diff) | |
| download | lwn-bc46eb5d5d7780782c70c7915f59ed25a908d550.tar.gz lwn-bc46eb5d5d7780782c70c7915f59ed25a908d550.zip | |
drm/mediatek: Support DRM plane alpha in OVL
Set the plane alpha according to DRM plane property.
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20240620-igt-v3-13-a9d62d2e2c7e@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c index 943db4f1bd6b..4b370bc0746d 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c @@ -458,8 +458,10 @@ void mtk_ovl_layer_config(struct device *dev, unsigned int idx, } con = ovl_fmt_convert(ovl, fmt); - if (state->base.fb && state->base.fb->format->has_alpha) - con |= OVL_CON_AEN | OVL_CON_ALPHA; + if (state->base.fb) { + con |= OVL_CON_AEN; + con |= state->base.alpha & OVL_CON_ALPHA; + } /* CONST_BLD must be enabled for XRGB formats although the alpha channel * can be ignored, or OVL will still read the value from memory. |