linux-kernel - Re: [PATCH v3 00/24] i.MX Media Driver

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Date:   Fri, 3 Feb 2017 09:56:18 -0800
From:   Steve Longerbeam <slongerbeam@...il.com>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Steve Longerbeam <slongerbeam@...il.com>
Cc:     Philipp Zabel <p.zabel@...gutronix.de>, robh+dt@...nel.org,
        mark.rutland@....com, shawnguo@...nel.org, kernel@...gutronix.de,
        fabio.estevam@....com, linux@...linux.org.uk, mchehab@...nel.org,
        hverkuil@...all.nl, nick@...anahar.org, markus.heiser@...marit.de,
        laurent.pinchart+renesas@...asonboard.com, bparrot@...com,
        geert@...ux-m68k.org, arnd@...db.de, sudipm.mukherjee@...il.com,
        minghsiu.tsai@...iatek.com, tiffany.lin@...iatek.com,
        jean-christophe.trotin@...com, horms+renesas@...ge.net.au,
        niklas.soderlund+renesas@...natech.se, robert.jarzmik@...e.fr,
        songjun.wu@...rochip.com, andrew-ct.chen@...iatek.com,
        gregkh@...uxfoundation.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-media@...r.kernel.org, devel@...verdev.osuosl.org
Subject: Re: [PATCH v3 00/24] i.MX Media Driver



On 02/03/2017 06:41 AM, Laurent Pinchart wrote:
> Hello,
>
> On Wednesday 01 Feb 2017 16:19:27 Steve Longerbeam wrote:
>> On 02/01/2017 01:30 AM, Philipp Zabel wrote:
>>
>>> media-ctl propagates the output pad format to all remote subdevices'
>>> input pads for all enabled links:
>>>
>>> https://git.linuxtv.org/v4l-utils.git/tree/utils/media-ctl/libv4l2subdev.c
>>> #n693
>> Ah cool, I wasn't aware media-ctl did this, but it makes sense and
>> makes it easier on the user.
> To be precise, userspace is responsible for propagating formats *between*
> subdevs (source to sink, over a link) and drivers for propagating formats *in*
> subdevs (sink to source, inside the subdev).

Hi Laurent, yes thanks for that clarification.

Steve