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,
Project_Global_Chrome_Upstream_Group@mediatek.com,
linux-mediatek@lists.infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v10 3/9] drm/mediatek: add RDMA fifo size error handle
Date: Wed, 27 Jan 2021 12:54:16 +0800 [thread overview]
Message-ID: <20210127045422.2418917-4-hsinyi@chromium.org> (raw)
In-Reply-To: <20210127045422.2418917-1-hsinyi@chromium.org>
From: Yongqiang Niu <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>
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
---
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 b84004394970f..04b9542010b00 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
@@ -168,6 +168,10 @@ void mtk_rdma_config(struct device *dev, 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);
--
2.30.0.280.ga3ce27912f-goog
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next prev parent reply other threads:[~2021-01-27 8:30 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-27 4:54 [PATCH v10 0/9] drm/mediatek: add support for mediatek SOC MT8183 Hsin-Yi Wang
2021-01-27 4:54 ` [PATCH v10 1/9] arm64: dts: mt8183: rename rdma fifo size Hsin-Yi Wang
2021-01-27 4:54 ` [PATCH v10 2/9] arm64: dts: mt8183: refine gamma compatible name Hsin-Yi Wang
2021-01-27 4:54 ` Hsin-Yi Wang [this message]
2021-01-27 7:59 ` [PATCH v10 3/9] drm/mediatek: add RDMA fifo size error handle CK Hu
2021-01-27 4:54 ` [PATCH v10 4/9] drm/mediatek: generalize mtk_dither_set() function Hsin-Yi Wang
2021-01-28 4:39 ` CK Hu
2021-01-28 5:09 ` Hsin-Yi Wang
2021-01-28 5:21 ` CK Hu
2021-01-27 4:54 ` [PATCH v10 5/9] drm/mediatek: separate gamma module Hsin-Yi Wang
2021-01-28 5:33 ` CK Hu
2021-01-27 4:54 ` [PATCH v10 6/9] drm/mediatek: add has_dither private data for gamma Hsin-Yi Wang
2021-01-28 5:34 ` CK Hu
2021-01-27 4:54 ` [PATCH v10 7/9] drm/mediatek: enable dither function Hsin-Yi Wang
2021-01-28 6:01 ` CK Hu
2021-01-27 4:54 ` [PATCH v10 8/9] drm/mediatek: add DDP support for MT8183 Hsin-Yi Wang
2021-01-28 6:13 ` CK Hu
2021-01-28 6:15 ` Hsin-Yi Wang
2021-01-28 7:00 ` CK Hu
2021-01-28 6:19 ` CK Hu
2021-01-27 4:54 ` [PATCH v10 9/9] drm/mediatek: add support for mediatek SOC MT8183 Hsin-Yi Wang
2021-01-28 6:17 ` CK Hu
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