From: Hsin-Yi Wang <hsinyi@chromium.org>
To: CK Hu <ck.hu@mediatek.com>,
Philipp Zabel <p.zabel@pengutronix.de>,
Matthias Brugger <matthias.bgg@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org,
Yongqiang Niu <yongqiang.niu@mediatek.com>,
David Airlie <airlied@linux.ie>,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-mediatek@lists.infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v13 6/8] drm/mediatek: enable dither function
Date: Fri, 29 Jan 2021 17:22:07 +0800 [thread overview]
Message-ID: <20210129092209.2584718-7-hsinyi@chromium.org> (raw)
In-Reply-To: <20210129092209.2584718-1-hsinyi@chromium.org>
From: Yongqiang Niu <yongqiang.niu@mediatek.com>
Enable dither function to improve the display quality for dither
supported bpc 4, 6, 8. For not supported bpc, use relay mode.
Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
---
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
index ac2cb25620357..5761dd15eedf2 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
@@ -53,6 +53,7 @@
#define DITHER_EN BIT(0)
#define DISP_DITHER_CFG 0x0020
#define DITHER_RELAY_MODE BIT(0)
+#define DITHER_ENGINE_EN BIT(1)
#define DISP_DITHER_SIZE 0x0030
#define LUT_10BIT_MASK 0x03ff
@@ -314,9 +315,17 @@ static void mtk_dither_config(struct device *dev, unsigned int w,
unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
{
struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
-
- mtk_ddp_write(cmdq_pkt, h << 16 | w, &priv->cmdq_reg, priv->regs, DISP_DITHER_SIZE);
- mtk_ddp_write(cmdq_pkt, DITHER_RELAY_MODE, &priv->cmdq_reg, priv->regs, DISP_DITHER_CFG);
+ bool valid_bpc = (bpc == 4 || bpc == 6 || bpc == 8);
+
+ mtk_ddp_write(cmdq_pkt, h << 16 | w, &priv->cmdq_reg, priv->regs,
+ DISP_DITHER_SIZE);
+ if (valid_bpc)
+ mtk_dither_set_common(priv->regs, &priv->cmdq_reg, bpc,
+ DISP_DITHER_CFG, DITHER_ENGINE_EN,
+ cmdq_pkt);
+ else
+ mtk_ddp_write(cmdq_pkt, DITHER_RELAY_MODE, &priv->cmdq_reg,
+ priv->regs, DISP_DITHER_CFG);
}
static void mtk_dither_start(struct device *dev)
--
2.30.0.365.g02bc693789-goog
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next prev parent reply other threads:[~2021-01-30 11:29 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-29 9:22 [PATCH v13 0/8] drm/mediatek: add support for mediatek SOC MT8183 Hsin-Yi Wang
2021-01-29 9:22 ` [PATCH v13 1/8] arm64: dts: mt8183: rename rdma fifo size Hsin-Yi Wang
2021-01-29 9:22 ` [PATCH v13 2/8] arm64: dts: mt8183: refine gamma compatible name Hsin-Yi Wang
2021-01-29 9:22 ` [PATCH v13 3/8] drm/mediatek: add mtk_dither_set_common() function Hsin-Yi Wang
2021-01-30 9:50 ` Chun-Kuang Hu
2021-01-29 9:22 ` [PATCH v13 4/8] drm/mediatek: separate gamma module Hsin-Yi Wang
2021-01-30 10:05 ` Chun-Kuang Hu
2021-01-29 9:22 ` [PATCH v13 5/8] drm/mediatek: add has_dither private data for gamma Hsin-Yi Wang
2021-01-30 10:12 ` Chun-Kuang Hu
2021-01-29 9:22 ` Hsin-Yi Wang [this message]
2021-01-31 3:39 ` [PATCH v13 6/8] drm/mediatek: enable dither function Chun-Kuang Hu
2021-01-29 9:22 ` [PATCH v13 7/8] soc: mediatek: add mtk mutex support for MT8183 Hsin-Yi Wang
2021-02-09 14:48 ` Enric Balletbo Serra
2021-02-10 12:14 ` Matthias Brugger
2021-03-17 16:31 ` Matthias Brugger
2021-01-29 9:22 ` [PATCH v13 8/8] drm/mediatek: add support for mediatek SOC MT8183 Hsin-Yi Wang
2021-01-30 10:47 ` Chun-Kuang Hu
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