From: Yongqiang Niu <yongqiang.niu@mediatek.com>
To: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Philipp Zabel <p.zabel@pengutronix.de>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
Jassi Brar <jassisinghbrar@gmail.com>,
Yongqiang Niu <yongqiang.niu@mediatek.com>,
Fabien Parent <fparent@baylibre.com>,
Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>,
<devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <dri-devel@lists.freedesktop.org>,
<Project_Global_Chrome_Upstream_Group@mediatek.com>,
Hsin-Yi Wang <hsinyi@chromium.org>
Subject: [PATCH v2] drm/mediatek: add dither 6 setting
Date: Mon, 19 Jul 2021 16:24:42 +0800 [thread overview]
Message-ID: <1626683082-29570-2-git-send-email-yongqiang.niu@mediatek.com> (raw)
In-Reply-To: <1626683082-29570-1-git-send-email-yongqiang.niu@mediatek.com>
in the first version dither patch
https://patchwork.kernel.org/project/linux-mediatek/patch/1553667561-25447-13-git-send-email-yongqiang.niu@mediatek.com/
dither 6 setting is included in that patch
bit 1 is lfsr_en( "Enables LFSR-type dithering"), need enable
bit 2 is rdither_en(Enables running order dithering), need disable
in this issue
https://partnerissuetracker.corp.google.com/issues/190643544
dither 6 setting missed in set dither common patch
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c?h=next-20210430&id=a6b7c98afdcad0f149010ae028b24f2d0dc24cdb
Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
---
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
index 99cbf44..7dd8e05 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
@@ -26,6 +26,7 @@
#define DISP_OD_CFG 0x0020
#define DISP_OD_SIZE 0x0030
#define DISP_DITHER_5 0x0114
+#define DISP_DITHER_6 0x0118
#define DISP_DITHER_7 0x011c
#define DISP_DITHER_15 0x013c
#define DISP_DITHER_16 0x0140
@@ -135,6 +136,7 @@ void mtk_dither_set_common(void __iomem *regs, struct cmdq_client_reg *cmdq_reg,
if (bpc >= MTK_MIN_BPC) {
mtk_ddp_write(cmdq_pkt, 0, cmdq_reg, regs, DISP_DITHER_5);
+ mtk_ddp_write(cmdq_pkt, 0x3002, cmdq_reg, regs, DISP_DITHER_6);
mtk_ddp_write(cmdq_pkt, 0, cmdq_reg, regs, DISP_DITHER_7);
mtk_ddp_write(cmdq_pkt,
DITHER_LSB_ERR_SHIFT_R(MTK_MAX_BPC - bpc) |
--
1.8.1.1.dirty
next prev parent reply other threads:[~2021-07-19 9:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-19 8:24 [PATCH v2] drm/mediatek: add dither 6 setting Yongqiang Niu
2021-07-19 8:24 ` Yongqiang Niu [this message]
2021-07-20 5:00 ` Hsin-Yi Wang
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