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

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Date:	Tue, 14 Jun 2016 19:08:08 +0800
From:	tiffany lin <tiffany.lin@...iatek.com>
To:	Hans Verkuil <hansverk@...co.com>
CC:	Mauro Carvalho Chehab <mchehab@....samsung.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>,
	<tiffany.lin@...iatek.com>
Subject: Re: [PATCH v3 0/9] Add MT8173 Video Decoder Driver

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?

In
https://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git/tree/README, it mentions that 
"To submit firmware to this repository, please send either a git binary
diff or preferably a git pull request to: linux-firmware@...nel.org and
also cc: to related mailing lists."

How we made a git pull request to linux-firmware@...nel.org? 
How we find out related mailing lists?

best regards,
Tiffany

> 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