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From: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
To: Loic Poulain <loic.poulain@oss.qualcomm.com>,
	Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Kees Cook <kees@kernel.org>,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>,
	Bryan O'Donoghue <bod@kernel.org>, Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Bjorn Andersson <andersson@kernel.org>,
	Konrad Dybcio <konradybcio@kernel.org>
Cc: linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org,
	devicetree@vger.kernel.org, laurent.pinchart@ideasonboard.com,
	kieran.bingham@ideasonboard.com, johannes.goede@oss.qualcomm.com
Subject: Re: [PATCH v3 05/15] media: qcom: camss: Add camss-isp-sched helper
Date: Fri, 8 May 2026 11:05:58 +0100	[thread overview]
Message-ID: <f6121050-3b27-4651-9fa9-9300ad299df7@linaro.org> (raw)
In-Reply-To: <20260508-camss-isp-ope-v3-5-bb1055274603@oss.qualcomm.com>

On 07/05/2026 23:49, Loic Poulain wrote:
> +/**
> + * struct camss_isp_job_ops - per-job operation callbacks
> + *
> + * @ready:  Optional; return %true if the job can be submitted to hardware.
> + *          Called outside the scheduler spinlock.  May be NULL (always ready).
> + * @run:    Start the hardware for this job.  Called from workqueue context.
> + *          @ctx_changed is %true when this job differs from the previously
> + *          run job (i.e. first run ever, or a different context took over).
> + * @abort:  Optional; abort a running job (e.g. trigger a HW reset).
> + *          Called from process context during camss_isp_sched_cancel().
> + *          May be NULL.
> + */
> +struct camss_isp_job_ops {
> +	bool	(*ready)(void *priv);
> +	void	(*run)(void *priv, bool ctx_changed);
> +	void	(*abort)(void *priv);
> +};

I'll reiterate, I don't think this is needed and is overkill.

v4l2_m2m_ops already has device_run(), job_abort() and job_ready().

:g/ISP_SCHED_PAUSED/s//v4l2_m2m->suspend()/resume()/g

This seems like codebomb of a parallel implementation, which can be 
largely covered by existing v4l2 stuff and if not then should be 
justified in v4l2 as a new design paradigm.

---
bod

  reply	other threads:[~2026-05-08 10:06 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-07 22:49 [PATCH v3 00/15] media: qcom: camss: CAMSS Offline Processing Engine support Loic Poulain
2026-05-07 22:49 ` [PATCH v3 01/15] media: qcom: camss: Add PM clock support and integrate with runtime PM Loic Poulain
2026-05-07 22:49 ` [PATCH v3 02/15] media: qcom: camss: Add PM clock definitions for QCM2290 Loic Poulain
2026-05-07 22:49 ` [PATCH v3 03/15] media: qcom: camss: Drop top_ahb/axi from QCM2290 subdevice clocks Loic Poulain
2026-05-07 22:49 ` [PATCH v3 04/15] media: qcom: camss: Add camss-isp-bufq helper Loic Poulain
2026-05-08  9:57   ` Bryan O'Donoghue
2026-05-09 14:30     ` Loic Poulain
2026-05-07 22:49 ` [PATCH v3 05/15] media: qcom: camss: Add camss-isp-sched helper Loic Poulain
2026-05-08 10:05   ` Bryan O'Donoghue [this message]
2026-05-09 14:47     ` Loic Poulain
2026-05-07 22:49 ` [PATCH v3 06/15] media: qcom: camss: Add camss-isp-pipeline helper Loic Poulain
2026-05-07 22:49 ` [PATCH v3 07/15] media: qcom: camss: Add V4L2 meta format for CAMSS ISP parameters Loic Poulain
2026-05-07 22:49 ` [PATCH v3 08/15] media: qcom: camss: Add camss-isp-params helper Loic Poulain
2026-05-07 22:49 ` [PATCH v3 09/15] dt-bindings: media: qcom: Add CAMSS Offline Processing Engine (OPE) Loic Poulain
2026-05-07 22:49 ` [PATCH v3 10/15] dt-bindings: media: qcom,qcm2290-camss: Add OPE ISP subnode Loic Poulain
2026-05-07 22:49 ` [PATCH v3 11/15] media: qcom: camss: Populate CAMSS child devices via DT Loic Poulain
2026-05-07 22:49 ` [PATCH v3 12/15] media: uapi: Add CAMSS ISP configuration definition Loic Poulain
2026-05-08  9:19   ` Bryan O'Donoghue
2026-05-09 14:06     ` Loic Poulain
2026-05-07 22:49 ` [PATCH v3 13/15] media: qcom: camss: Add CAMSS Offline Processing Engine driver Loic Poulain
2026-05-07 22:49 ` [PATCH v3 14/15] arm64: dts: qcom: agatti: Assigned clock rate for CAMSS AXI Loic Poulain
2026-05-07 22:49 ` [PATCH v3 15/15] arm64: dts: qcom: agatti: Add OPE node Loic Poulain

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