From: Yongqiang Niu <yongqiang.niu@mediatek.com>
To: CK Hu <ck.hu@mediatek.com>,
Philipp Zabel <p.zabel@pengutronix.de>,
"Rob Herring" <robh+dt@kernel.org>,
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,
Project_Global_Chrome_Upstream_Group@mediatek.com,
linux-mediatek@lists.infradead.org,
Daniel Vetter <daniel@ffwll.ch>,
Hsin-Yi Wang <hsinyi@chromium.org>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v9, 06/11] drm/mediatek: add RDMA fifo size error handle
Date: Thu, 7 Jan 2021 11:11:16 +0800 [thread overview]
Message-ID: <1609989081-29353-7-git-send-email-yongqiang.niu@mediatek.com> (raw)
In-Reply-To: <1609989081-29353-1-git-send-email-yongqiang.niu@mediatek.com>
This patch add RDMA fifo size error handle
rdma fifo size will not always bigger than the calculated threshold
if that case happened, we need set fifo size as the threshold
Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
---
drivers/gpu/drm/mediatek/mtk_disp_rdma.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
index 8c64d5c..2d2cca2 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
@@ -152,6 +152,10 @@ static void mtk_rdma_config(struct mtk_ddp_comp *comp, unsigned int width,
* account for blanking, and with a pixel depth of 4 bytes:
*/
threshold = width * height * vrefresh * 4 * 7 / 1000000;
+
+ if (threshold > rdma_fifo_size)
+ threshold = rdma_fifo_size;
+
reg = RDMA_FIFO_UNDERFLOW_EN |
RDMA_FIFO_PSEUDO_SIZE(rdma_fifo_size) |
RDMA_OUTPUT_VALID_FIFO_THRESHOLD(threshold);
--
1.8.1.1.dirty
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next prev parent reply other threads:[~2021-01-07 3:12 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-07 3:11 [PATCH v9, 00/11] drm/mediatek: add support for mediatek SOC MT8183 Yongqiang Niu
2021-01-07 3:11 ` [PATCH v9, 01/11] dt-bindings: mediatek: add rdma-fifo-size description for mt8183 display Yongqiang Niu
2021-01-07 9:54 ` Chun-Kuang Hu
2021-01-12 14:49 ` Rob Herring
2021-01-13 15:28 ` Chun-Kuang Hu
2021-01-07 3:11 ` [PATCH v9, 02/11] dt-bindings: mediatek: add " Yongqiang Niu
2021-01-07 10:17 ` Chun-Kuang Hu
2021-01-07 3:11 ` [PATCH v9, 03/11] arm64: dts: mt8183: rename rdma fifo size Yongqiang Niu
2021-01-07 9:58 ` Chun-Kuang Hu
2021-01-07 3:11 ` [PATCH v9, 04/11] arm64: dts: mt8183: refine gamma compatible name Yongqiang Niu
2021-01-07 3:11 ` [PATCH v9, 05/11] drm/mediatek: add fifo_size into rdma private data Yongqiang Niu
2021-01-07 10:05 ` Chun-Kuang Hu
2021-01-14 23:27 ` Chun-Kuang Hu
2021-01-07 3:11 ` Yongqiang Niu [this message]
2021-01-07 3:11 ` [PATCH v9, 07/11] drm/mediatek: separate gamma module Yongqiang Niu
2021-01-07 10:25 ` Chun-Kuang Hu
2021-01-07 3:11 ` [PATCH v9, 08/11] drm/mediatek: add has_dither private data for gamma Yongqiang Niu
2021-01-07 10:29 ` Chun-Kuang Hu
2021-01-07 3:11 ` [PATCH v9, 09/11] drm/mediatek: enable dither function Yongqiang Niu
2021-01-07 3:11 ` [PATCH v9, 10/11] drm/mediatek: add DDP support for MT8183 Yongqiang Niu
2021-01-07 12:08 ` Chun-Kuang Hu
2021-01-07 3:11 ` [PATCH v9, 11/11] This patch add support for mediatek SOC MT8183 Yongqiang Niu
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