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| author | Hsiao Chien Sung <shawn.sung@mediatek.com> | 2024-06-20 00:38:44 +0800 |
|---|---|---|
| committer | Chun-Kuang Hu <chunkuang.hu@kernel.org> | 2024-06-20 13:57:35 +0000 |
| commit | 8e418bee401b7cfd0bc40d187afea2c6b08b44ec (patch) | |
| tree | 22c374f2a5943a6f9567c8d2f2d4aebba1228989 | |
| parent | 765f284f1fe172573021056f7e337ee53f252969 (diff) | |
| download | lwn-8e418bee401b7cfd0bc40d187afea2c6b08b44ec.tar.gz lwn-8e418bee401b7cfd0bc40d187afea2c6b08b44ec.zip | |
drm/mediatek: Fix XRGB setting error in Mixer
Although the alpha channel in XRGB formats can be ignored, ALPHA_CON
must be configured accordingly when using XRGB formats or it will still
affects CRC generation.
Fixes: d886c0009bd0 ("drm/mediatek: Add ETHDR support for MT8195")
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20240620-igt-v3-4-a9d62d2e2c7e@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_ethdr.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_ethdr.c b/drivers/gpu/drm/mediatek/mtk_ethdr.c index d7d16482c947..5c52e514ae30 100644 --- a/drivers/gpu/drm/mediatek/mtk_ethdr.c +++ b/drivers/gpu/drm/mediatek/mtk_ethdr.c @@ -153,6 +153,7 @@ void mtk_ethdr_layer_config(struct device *dev, unsigned int idx, unsigned int offset = (pending->x & 1) << 31 | pending->y << 16 | pending->x; unsigned int align_width = ALIGN_DOWN(pending->width, 2); unsigned int alpha_con = 0; + bool replace_src_a = false; dev_dbg(dev, "%s+ idx:%d", __func__, idx); @@ -167,7 +168,15 @@ void mtk_ethdr_layer_config(struct device *dev, unsigned int idx, if (state->base.fb && state->base.fb->format->has_alpha) alpha_con = MIXER_ALPHA_AEN | MIXER_ALPHA; - mtk_mmsys_mixer_in_config(priv->mmsys_dev, idx + 1, alpha_con ? false : true, + if (state->base.fb && !state->base.fb->format->has_alpha) { + /* + * Mixer doesn't support CONST_BLD mode, + * use a trick to make the output equivalent + */ + replace_src_a = true; + } + + mtk_mmsys_mixer_in_config(priv->mmsys_dev, idx + 1, replace_src_a, MIXER_ALPHA, pending->x & 1 ? MIXER_INX_MODE_EVEN_EXTEND : MIXER_INX_MODE_BYPASS, align_width / 2 - 1, cmdq_pkt); |