linux-kernel - Re: [PATCH 2/7] drm/mediatek: fix CCORR mtk_ctm_s31_32_to_s1

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Message-ID: <9d3886e7-f7dc-494e-b77c-1e44e7114d84@collabora.com>
Date: Wed, 19 Feb 2025 13:49:19 +0100
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Jay Liu <jay.liu@...iatek.com>, Chun-Kuang Hu <chunkuang.hu@...nel.org>,
 Philipp Zabel <p.zabel@...gutronix.de>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Matthias Brugger
 <matthias.bgg@...il.com>, Yongqiang Niu <yongqiang.niu@...iatek.com>,
 CK Hu <ck.hu@...iatek.com>, Hsin-Yi Wang <hsinyi@...omium.org>
Cc: dri-devel@...ts.freedesktop.org, linux-mediatek@...ts.infradead.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org,
 Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH 2/7] drm/mediatek: fix CCORR mtk_ctm_s31_32_to_s1_n
 function issue

Il 19/02/25 10:20, Jay Liu ha scritto:
> if matrixbit is 11,
> The range of color matrix is from 0 to (BIT(11) - 1).
> Values from 0 to (BIT(11) - 1) represent positive numbers,
> values from BIT(11) to (BIT(12) - 1) represent negative numbers.
> For example, -1 need converted to 8191.
> 
> Fixes: 738ed4156fba ("drm/mediatek: Add matrix_bits private data for ccorr")
> 
> Signed-off-by: Jay Liu <jay.liu@...iatek.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>