Thread (3 messages) 3 messages, 2 authors, 2021-02-01

Re: [PATCH] drm/mediatek: enable dither function

From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Date: 2021-02-01 13:38:10
Also in: dri-devel, linux-devicetree, linux-mediatek, lkml

Hi, Hsin-Yi:

Chun-Kuang Hu [off-list ref] 於 2021年2月1日 週一 上午12:20寫道:
Hi, Hsin-Yi:

Hsin-Yi Wang [off-list ref] 於 2021年1月31日 週日 下午1:11寫道:
quoted
From: Yongqiang Niu <redacted>

Enable dither function to improve the display quality.
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Applied to mediatek-drm-next [1], thanks.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git/log/?h=mediatek-drm-next
quoted
Signed-off-by: Yongqiang Niu <redacted>
Signed-off-by: Hsin-Yi Wang <redacted>
---
Previous version:
https://patchwork.kernel.org/project/linux-mediatek/patch/20210129092209.2584718-7-hsinyi@chromium.org/
---
 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
index c730029ac8fc7..0444b429daf00 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
@@ -315,8 +316,12 @@ static void mtk_dither_config(struct device *dev, unsigned int w,
 {
        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);
+       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);
+       mtk_dither_set_common(priv->regs, &priv->cmdq_reg, bpc, DISP_DITHER_CFG,
+                             DITHER_ENGINE_EN, cmdq_pkt);
 }

 static void mtk_dither_start(struct device *dev)
--
2.30.0.365.g02bc693789-goog


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