linux-kernel - Re: [PATCH v5 03/16] media: rkisp1: Add user space ABI definitions

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Message-ID: <e6160bef-29af-3905-6535-a18cb0caa601@xs4all.nl>
Date:   Wed, 7 Feb 2018 13:00:23 +0100
From:   Hans Verkuil <hverkuil@...all.nl>
To:     Shunqian Zheng <zhengsq@...k-chips.com>,
        linux-rockchip@...ts.infradead.org, linux-media@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        mchehab@...nel.org, sakari.ailus@...ux.intel.com,
        hans.verkuil@...co.com, tfiga@...omium.org,
        laurent.pinchart@...asonboard.com, zyc@...k-chips.com,
        eddie.cai.linux@...il.com, jeffy.chen@...k-chips.com,
        allon.huang@...k-chips.com, devicetree@...r.kernel.org,
        heiko@...ech.de, robh+dt@...nel.org, Joao.Pinto@...opsys.com,
        Luis.Oliveira@...opsys.com, Jose.Abreu@...opsys.com,
        jacob2.chen@...k-chips.com
Subject: Re: [PATCH v5 03/16] media: rkisp1: Add user space ABI definitions

On 12/29/17 08:52, Shunqian Zheng wrote:
> From: Jeffy Chen <jeffy.chen@...k-chips.com>
> 
> Add the header for userspace

General note: I saw four cases where this documentation referred to the
datasheet. Three comments on that:

1) You don't say which datasheet.
2) I assume the datasheet is under NDA?
3) You do need to give enough information so a reasonable default can be
   used. I mentioned in an earlier review that creating an initial params
   struct that can be used as a templete would be helpful (or even
   required), and that would be a good place to put such defaults.

Regards,

	Hans