From: Bryan O'Donoghue <bod@kernel.org>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Loic Poulain <loic.poulain@oss.qualcomm.com>,
vladimir.zapolskiy@linaro.org, kieran.bingham@ideasonboard.com,
robh@kernel.org, krzk+dt@kernel.org, andersson@kernel.org,
konradybcio@kernel.org, linux-media@vger.kernel.org,
linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, johannes.goede@oss.qualcomm.com,
mchehab@kernel.org
Subject: Re: [RFC PATCH 2/3] media: qcom: camss: Add CAMSS Offline Processing Engine driver
Date: Sun, 5 Apr 2026 21:28:31 +0100 [thread overview]
Message-ID: <e85dec04-afc6-4942-bc06-d46c508d2584@kernel.org> (raw)
In-Reply-To: <20260405202431.GE1213462@killaraus.ideasonboard.com>
On 05/04/2026 21:24, Laurent Pinchart wrote:
>> We make the buffer in user-space which could be used by CDM but stage
>> the implementation.
> My proposal is to use an abstraction for the ISP parameters buffer, with
> logical parameters, and translate that to the CDM buffer in kernelspace,
> but in userspace context instead of IRQ handler context.
As I understand it, the parameters buffers can top out at nearly 2.5
megabytes.
However I haven't looked into the CDM format in detail so - it needs
anaylsis.
TBH I'm happy enough to follow a precedent, let's discuss further with
an analysis of CDM in hand.
---
bod
next prev parent reply other threads:[~2026-04-05 20:28 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <xy6TKmdveRx4cMshSHEUGZ7s3lbsurWcsc2vq05A7_N4bCialR7EelZitouugtZDkpFCAghjqY4NDdSQEIPprw==@protonmail.internalid>
2026-03-23 12:58 ` [RFC PATCH 0/3] media: qcom: camss: CAMSS Offline Processing Engine support Loic Poulain
2026-03-23 12:58 ` [RFC PATCH 1/3] dt-bindings: media: qcom: Add CAMSS Offline Processing Engine (OPE) Loic Poulain
2026-03-23 13:03 ` Krzysztof Kozlowski
2026-03-23 16:03 ` Loic Poulain
2026-03-23 16:10 ` Krzysztof Kozlowski
2026-03-23 13:03 ` Bryan O'Donoghue
2026-03-23 12:58 ` [RFC PATCH 2/3] media: qcom: camss: Add CAMSS Offline Processing Engine driver Loic Poulain
2026-03-23 13:43 ` Bryan O'Donoghue
2026-03-23 15:31 ` Loic Poulain
2026-03-24 11:00 ` Bryan O'Donoghue
2026-03-24 15:57 ` Loic Poulain
2026-03-24 21:27 ` Dmitry Baryshkov
2026-03-26 12:06 ` johannes.goede
2026-03-30 11:37 ` Dmitry Baryshkov
2026-03-30 13:46 ` johannes.goede
2026-03-30 14:11 ` Bryan O'Donoghue
2026-03-30 14:27 ` johannes.goede
2026-03-30 14:32 ` Bryan O'Donoghue
2026-03-30 18:59 ` Dmitry Baryshkov
2026-03-30 19:07 ` Loic Poulain
2026-04-05 20:23 ` Laurent Pinchart
2026-03-30 18:55 ` Dmitry Baryshkov
2026-03-30 22:51 ` Bryan O'Donoghue
2026-03-31 8:11 ` Konrad Dybcio
2026-04-05 20:14 ` Laurent Pinchart
2026-03-25 9:30 ` Konrad Dybcio
2026-04-05 20:11 ` Laurent Pinchart
2026-04-05 20:15 ` Bryan O'Donoghue
2026-04-05 20:24 ` Laurent Pinchart
2026-04-05 20:28 ` Bryan O'Donoghue [this message]
2026-03-25 17:08 ` kernel test robot
2026-03-25 18:10 ` kernel test robot
2026-03-25 21:08 ` kernel test robot
2026-08-13 22:33 ` sashiko-bot
2026-03-23 12:58 ` [RFC PATCH 3/3] arm64: dts: qcom: qcm2290: Add CAMSS OPE node Loic Poulain
2026-03-23 13:03 ` Bryan O'Donoghue
2026-03-23 13:24 ` Konrad Dybcio
2026-03-23 13:33 ` Bryan O'Donoghue
2026-03-23 16:15 ` Krzysztof Kozlowski
2026-03-24 10:30 ` Bryan O'Donoghue
2026-03-23 16:31 ` Loic Poulain
2026-03-24 10:43 ` Konrad Dybcio
2026-03-24 12:54 ` [RFC PATCH 0/3] media: qcom: camss: CAMSS Offline Processing Engine support Bryan O'Donoghue
2026-03-24 16:16 ` Loic Poulain
2026-04-05 19:48 ` Laurent Pinchart
2026-04-05 19:55 ` Bryan O'Donoghue
2026-04-05 20:47 ` Laurent Pinchart
2026-04-05 21:29 ` Bryan O'Donoghue
2026-04-05 23:02 ` Bryan O'Donoghue
2026-04-06 13:22 ` Loic Poulain
2026-04-05 19:57 ` Laurent Pinchart
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