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

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Message-ID: <8a46c1e7-1f27-1e67-8c05-b133598b6a66@xs4all.nl>
Date:	Fri, 1 Jul 2016 12:11:51 +0200
From:	Hans Verkuil <hverkuil@...all.nl>
To:	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	tiffany lin <tiffany.lin@...iatek.com>
Cc:	Hans Verkuil <hansverk@...co.com>,
	Hans Verkuil <hans.verkuil@...co.com>,
	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, PoChun.Lin@...iatek.com
Subject: Re: [PATCH v3 0/9] Add MT8173 Video Decoder Driver

On 06/16/2016 12:54 PM, Mauro Carvalho Chehab wrote:
> Em Tue, 14 Jun 2016 19:08:08 +0800
> tiffany lin <tiffany.lin@...iatek.com> escreveu:
> 
>> Hi Mauro,
>>
>>
>> On Wed, 2016-06-08 at 07:13 +0900, Hans Verkuil 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/
>>>>
>>>> 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.  
>>>   
>> Sorry, I am not familiar with how to upstream firmware.
>> Do you mean we need to upstream vpu firmware first before merge encoder
>> driver upstream?
> 
> Please look at this page:
> 	https://linuxtv.org/wiki/index.php/Development:_How_to_submit_patches#Firmware_submission
> 
> The information here can also be useful:
> 	https://www.kernel.org/doc/readme/firmware-README.AddingFirmware
> 
> In summary, you need to provide redistribution rights for the
> firmware blob. You can either submit it to me or directly to
> linux-firmware. In the latter, please c/c me on such patch.

Tiffany, what is the status of the firmware submission?

Regards,

	Hans