linux-kernel - Re: [PATCH v9 4/4] [media] cxusb: add raw mode support for Medion MD95700

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Date:   Tue, 16 Apr 2019 01:41:23 +0200
From:   "Maciej S. Szmigiero" <mail@...iej.szmigiero.name>
To:     Hans Verkuil <hverkuil@...all.nl>
Cc:     Michael Krufky <mkrufky@...uxtv.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Andy Walls <awalls@...metrocast.net>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-media@...r.kernel.org
Subject: Re: [PATCH v9 4/4] [media] cxusb: add raw mode support for Medion
 MD95700

On 12.04.2019 11:27, Hans Verkuil wrote:
> On 3/30/19 12:51 AM, Maciej S. Szmigiero wrote:
>> This adds raw (unprocessed) BT.656 stream capturing support for the analog
>> part of Medion 95700.
>> It can be enabled by setting CXUSB_EXTENDEDMODE_CAPTURE_RAW flag in
>> parm.capture.extendedmode passed to VIDIOC_S_PARM.
> 
> What is the point of this feature? I think this should just be dropped.

It simply provides an ability to capture a raw BT.656 stream as received
by the driver from the device.
This functionality is very useful for both debugging and for developing
the driver features.

Since I have to prepare this part anyway to make sure it's not broken by
some newly introduced change I am posting this, too.

> Regards,
> 
> 	Hans
> 

Thanks and best regards,
Maciej