From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CA7EF3FA5E2; Tue, 24 Mar 2026 12:54:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774356853; cv=none; b=tSyFy8alLSoHcDrA+5Aa8mZ5Hh6ihRRMQMUk9+lLkiooinQNRXxDvl70lS15fWVmlHf6C5QyGVDdNTF9gATjmWwO7mVgHW1rH4qZXV5yOQSA6M8bUF57uJJF+L6HwQxC4p92UKlYdGYWmdo7spxR2/PSdzACSWZ073Ibv/EDz9Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774356853; c=relaxed/simple; bh=X056UQ+E8ZZsLbM4gsXZpqj2276GOk+0DrTcty1UD14=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=bGG0ojipPNdodaSDOvQ7uwQITPbK64w8SxhXL4MXOeYmGlegJN26G++G3D5FOjN79OoskPWO7Y/LgB+SrN2whS5ZeCSdtM2A3k2zrwqaPEeYlad0Ne8czmiqTx/30edeg2iCPS2sUgayYTFvhRtvME5zxhfy4sYiPV1ZKjvjTo0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mV/4d8fS; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="mV/4d8fS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A4EF6C19424; Tue, 24 Mar 2026 12:54:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774356853; bh=X056UQ+E8ZZsLbM4gsXZpqj2276GOk+0DrTcty1UD14=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=mV/4d8fSYxWZlacVCKui2jT4IWSbZ0wkmj1Gdjanmz1rq8qI9nnnG6p5rzgdmVz8j hB1+BnNtTvQrsmC80g3ypsPBiimtxXnj2mC61+DvlP6aBAVD/sAKB6zof9HRD32odj UC+IibluOupx7w685nD6lBeAkHICRjHpwfgaf0PpchK1pi2Rn2e3uPfCFsqrkQt2g+ jqovuJ5FEh7tFLVlYmkRhcFwKT+mxx1p5G0tH6xjgSKRKR+qaumN85LX9ibR7E3V0W fbWy7lkmozPbE7rfcckoEEZaDfOOFyH/x6wZYAwF4pczJV4mzhGivCBcUxy04DanFZ wNSvigWbLZ7yQ== Message-ID: <055a7281-3e41-4e26-a8c8-5e28d69c0685@kernel.org> Date: Tue, 24 Mar 2026 12:54:08 +0000 Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH 0/3] media: qcom: camss: CAMSS Offline Processing Engine support To: Loic Poulain , vladimir.zapolskiy@linaro.org, laurent.pinchart@ideasonboard.com, kieran.bingham@ideasonboard.com, robh@kernel.org, krzk+dt@kernel.org, andersson@kernel.org, konradybcio@kernel.org Cc: 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 References: <20260323125824.211615-1-loic.poulain@oss.qualcomm.com> From: Bryan O'Donoghue Content-Language: en-US In-Reply-To: <20260323125824.211615-1-loic.poulain@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 23/03/2026 12:58, Loic Poulain wrote: > This first version is intentionally minimalistic. It provides a working > configuration using a fixed set of static processing parameters, mainly > to achieve correct and good-quality debayering. You need the other 50% of the kernel side - the generation of bayer statistics in the IFE, as well as generation of parameters to feed back into the OPE - which requires a user-space implementation too, so a lot of work there too. I'd also say when we have an ICP we should be using it via the HFI protocol, thus burying all of the IPE/OPE BPS and CDM complexity in the firmware. Understood Agatti has no ICP so you're limited to direct OPE/IFE register access here. For HFI capable platforms - the majority - HFI is the way to go. I'll publish an RFC for Hamoa for that soonish so we can make sure both coexist. --- bod