diff mbox series

[v4,02/17] soc: mediatek: Disable 9-bit alpha in ETHDR

Message ID 20231212121957.19231-3-shawn.sung@mediatek.com (mailing list archive)
State New, archived
Headers show
Series Support IGT in display driver | expand

Commit Message

Shawn Sung (宋孝謙) Dec. 12, 2023, 12:19 p.m. UTC 
ETHDR 9-bit alpha should be disabled by default,
otherwise alpha blending will not work.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com>
---
 drivers/soc/mediatek/mtk-mmsys.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c
index a456c3e0aee7..e471be3bafc1 100644
--- a/drivers/soc/mediatek/mtk-mmsys.c
+++ b/drivers/soc/mediatek/mtk-mmsys.c
@@ -226,6 +226,7 @@  void mtk_mmsys_mixer_in_config(struct device *dev, int idx, bool alpha_sel, u16
 
 	mtk_mmsys_update_bits(mmsys, MT8195_VDO1_MIXER_IN1_ALPHA + (idx - 1) * 4, ~0,
 			      alpha << 16 | alpha, cmdq_pkt);
+	mtk_mmsys_update_bits(mmsys, MT8195_VDO1_HDR_TOP_CFG, BIT(15 + idx), 0, cmdq_pkt);
 	mtk_mmsys_update_bits(mmsys, MT8195_VDO1_HDR_TOP_CFG, BIT(19 + idx),
 			      alpha_sel << (19 + idx), cmdq_pkt);
 	mtk_mmsys_update_bits(mmsys, MT8195_VDO1_MIXER_IN1_PAD + (idx - 1) * 4,