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

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Message-ID: <7ee128a2-f026-5404-bbac-6b5c1bee51e7@xs4all.nl>
Date:	Fri, 1 Jul 2016 14:00:54 +0200
From:	Hans Verkuil <hverkuil@...all.nl>
To:	andrew-ct chen <andrew-ct.chen@...iatek.com>
Cc:	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	tiffany lin <tiffany.lin@...iatek.com>,
	devicetree@...r.kernel.org, daniel.thompson@...aro.org,
	linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Hans Verkuil <hansverk@...co.com>, PoChun.Lin@...iatek.com,
	Rob Herring <robh+dt@...nel.org>,
	Hans Verkuil <hans.verkuil@...co.com>,
	linux-arm-kernel@...ts.infradead.org,
	Matthias Brugger <matthias.bgg@...il.com>,
	Yingjoe Chen <yingjoe.chen@...iatek.com>,
	Eddie Huang <eddie.huang@...iatek.com>,
	Pawel Osciak <posciak@...omium.org>,
	linux-media@...r.kernel.org
Subject: Re: [PATCH v3 0/9] Add MT8173 Video Decoder Driver

On 07/01/2016 01:53 PM, andrew-ct chen wrote:
> On Fri, 2016-07-01 at 12:11 +0200, Hans Verkuil wrote:
>> 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
> 
> Hi Hans,
> We are working on firmware test to make sure that both decoder and
> encoder work well. Hopes it can be ready (firmware submission) on July 4
> or July 5.

OK, great! Just wanted to make sure that this work was progressing and not stalled.

Thanks!

	Hans