linux-kernel - Re: [PATCH v3 0/9] Add MT8173 Video Decoder Driver

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Date:	Tue, 14 Jun 2016 16:44:36 +0800
From:	Wu-Cheng Li (李務誠) 
	<wuchengli@...omium.org>
To:	Hans Verkuil <hansverk@...co.com>
Cc:	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Tiffany Lin <tiffany.lin@...iatek.com>,
	Hans Verkuil <hans.verkuil@...co.com>,
	Daniel Thompson <daniel.thompson@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Daniel Kurtz <djkurtz@...omium.org>,
	Pawel Osciak <posciak@...omium.org>,
	Eddie Huang <eddie.huang@...iatek.com>,
	Yingjoe Chen <yingjoe.chen@...iatek.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
	linux-mediatek@...ts.infradead.org,
	Lin PoChun <PoChun.Lin@...iatek.com>
Subject: Re: [PATCH v3 0/9] Add MT8173 Video Decoder Driver

On Wed, Jun 8, 2016 at 6:13 AM, Hans Verkuil <hansverk@...co.com> wrote:
>
>
> On 06/07/2016 11:22 PM, Mauro Carvalho Chehab wrote:
>>
>> Em Mon, 30 May 2016 20:29:14 +0800
>> Tiffany Lin <tiffany.lin@...iatek.com> escreveu:
>>
>>> ==============
>>>   Introduction
>>> ==============
>>>
>>> The purpose of this series is to add the driver for video codec hw
>>> embedded in the Mediatek's MT8173 SoCs.
>>> Mediatek Video Codec is able to handle video decoding of in a range of
>>> formats.
>>>
>>> This patch series add Mediatek block format V4L2_PIX_FMT_MT21, the
>>> decoder driver will decoded bitstream to
>>> V4L2_PIX_FMT_MT21 format.
>>>
>>> This patch series rely on MTK VPU driver in patch series "Add MT8173
>>> Video Encoder Driver and VPU Driver"[1]
>>> and patch "CHROMIUM: v4l: Add V4L2_PIX_FMT_VP9 definition"[2] for VP9
>>> support.
>>> Mediatek Video Decoder driver rely on VPU driver to load, communicate
>>> with VPU.
>>>
>>> Internally the driver uses videobuf2 framework and MTK IOMMU and MTK SMI
>>> both have been merged in v4.6-rc1.
>>>
>>> [1]https://patchwork.linuxtv.org/patch/33734/
>>> [2]https://chromium-review.googlesource.com/#/c/245241/
>>
>>
>> Hmm... I'm not seeing the firmware for this driver at the
>> linux-firmware tree:
>>
>> https://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git/log/
Tiffany. Can you check the license and add the firmware to linux-firmware?

For the information, both encoder and decoder drivers require the
firmware to work.
>>
>> Nor I'm seeing any pull request for them. Did you send it?
>> I'll only merge the driver upstream after seeing such pull request.
>
>
> Mauro, are you confusing the decoder and encoder driver? I haven't
> thoroughly reviewed the decoder driver
> yet, so there is no pull request for the decoder driver.
>
> The only pull request I made was for the encoder driver.
>
> Regards,
>
>         Hans
>
> --
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