Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Mauro Carvalho Chehab]

As we did in 2012, we're planning to do a media summit again at KS/2012.

The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
before the LinuxCon North America.

In order to do it, I'd like to know who is interested on participate,
and to get proposals about what subjects will be discussed there,
in order to start planning the agenda.

Thanks!
Mauro

-------- Mensagem original --------
Assunto: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit
Data: Fri, 13 Jul 2012 13:37:08 -0400
De: Theodore Ts'o <tytso@mit.edu>
Para: James Bottomley <James.Bottomley@HansenPartnership.com>
CC: ksummit-2012-discuss@lists.linux-foundation.org, linux-kernel <linux-kernel@vger.kernel.org>

On Wed, Jul 11, 2012 at 09:09:15AM +0100, James Bottomley wrote:
> Hi All,
> 
> We have set aside the second day of the kernel summit (Tuesday 28
> August) as mini-summit day.  So far we have only the PCI mini summit on
> this day, so if you can think of other topics, please send them to the
> kernel summit discuss list:
> 
> ksummit-2012-discuss@lists.linux-foundation.org
> 
> Looking at the available rooms, we think we can run about four or five
> mini summits.
> 
> As an added incentive, mini summit organisers get to pick who they
> invite and all the people they pick will get an automatic invitation to
> the third day of the kernel summit (but not the core first day) and the
> evening events.

OK, so far I believe I've heard concrete suggestions from identified
(or fairly well identified :-) stuckees willing to organize
mini-summits for:

* ARM
* Media
* PCI
* memcg

I may have missed some, so if people could send a message to the
discuss list with [MINI-SUMMIT] in the subbject line and the name of
the proposed mini-summit, that would be really helpful.  Please
indicate whether you are volunteering to help organize the proposed
mini-summit, or identify someone you think can be volunteered.  :-)

Things that we will be asking the mini-summit chars to determine, in
addition to who should be given invites for Tuesday and Wednesday is
an estimate of how much time you need, and a list of sub-topics (and
who might lead the sub-topic discussion).  We will be asking you to
create a fairly well-defined schedule, with 30 and 60 minute slots, so
that we can publish a schedule and so that people who might need to
hop between mini-summits, have a chance to do so.  So please start
thinking about how long each of your sub-topics will need to be, and
who might be needed for a particular sub-topic's discussion to be
successful.  There may be a number of developers, with fingers in
multiple subsystem, where scheduling may become a bit of a challenge.

Thanks!!

						- Ted
_______________________________________________
Ksummit-2012-discuss mailing list
Ksummit-2012-discuss@lists.linux-foundation.org
https://lists.linux-foundation.org/mailman/listinfo/ksummit-2012-discuss

Re: Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Steven Toth]

> As we did in 2012, we're planning to do a media summit again at KS/2012.

Excellent.

> The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> before the LinuxCon North America.
>
> In order to do it, I'd like to know who is interested on participate,
> and to get proposals about what subjects will be discussed there,
> in order to start planning the agenda.

I'm interested. I like the idea of some cross-subsystem pollination,
talking with the ALSA people for example ... and given that ARM is
growing, I'd like to catch up and understand where ARM silicon is
heading in terms of embedded video decoding and any support for
hardware specific features we may / may not have / need.

... and of course, if we have anyone from Intel then we should be
asking if/when their Intel Media SDK (hardware H264  encoding) is
going to become a reality, or possibly kickstart that process.

-- 
Steven Toth - Kernel Labs
http://www.kernellabs.com

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Laurent Pinchart]

Hi Steven,

On Tuesday 17 July 2012 13:49:43 Steven Toth wrote:
> > As we did in 2012, we're planning to do a media summit again at KS/2012.
> 
> Excellent.
> 
> > The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> > before the LinuxCon North America.
> > 
> > In order to do it, I'd like to know who is interested on participate,
> > and to get proposals about what subjects will be discussed there,
> > in order to start planning the agenda.
> 
> I'm interested. I like the idea of some cross-subsystem pollination, talking
> with the ALSA people for example ...

That's very much in line with the KS/LPC spirit, I'd like to see that happen 
as well. We've been talking about media controller support in ALSA for ages 
:-)

> and given that ARM is growing, I'd like to catch up and understand where ARM
> silicon is heading in terms of embedded video decoding and any support for
> hardware specific features we may / may not have / need.

Information about future directions is unfortunately usually private, but we 
can always ask. To be honest I sometimes feel like even SoC vendors themselves 
don't know where they're heading to :-) If only that, a presentation about the 
latest media-related hardware developments on ARM would be good to get 
everybody up to speed.

> ... and of course, if we have anyone from Intel then we should be asking
> if/when their Intel Media SDK (hardware H264  encoding) is going to become a
> reality, or possibly kickstart that process.

-- 
Regards,

Laurent Pinchart

Re: Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Hans Verkuil]

On Tue July 17 2012 19:30:53 Mauro Carvalho Chehab wrote:
> As we did in 2012, we're planning to do a media summit again at KS/2012.
> 
> The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> before the LinuxCon North America.
> 
> In order to do it, I'd like to know who is interested on participate,
> and to get proposals about what subjects will be discussed there,
> in order to start planning the agenda.

I'd like to have 30 minutes to discuss a few V4L2 API ambiguities or just
plain weirdness, just like I did last year. I'll make an RFC issues to discuss
beforehand. I might also have a short presentation/demo of v4l2-compliance, as
I believe more people need to know about that utility.

Regards,

	Hans

> 
> Thanks!
> Mauro
> 
> -------- Mensagem original --------
> Assunto: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit
> Data: Fri, 13 Jul 2012 13:37:08 -0400
> De: Theodore Ts'o <tytso@mit.edu>
> Para: James Bottomley <James.Bottomley@HansenPartnership.com>
> CC: ksummit-2012-discuss@lists.linux-foundation.org, linux-kernel <linux-kernel@vger.kernel.org>
> 
> On Wed, Jul 11, 2012 at 09:09:15AM +0100, James Bottomley wrote:
> > Hi All,
> > 
> > We have set aside the second day of the kernel summit (Tuesday 28
> > August) as mini-summit day.  So far we have only the PCI mini summit on
> > this day, so if you can think of other topics, please send them to the
> > kernel summit discuss list:
> > 
> > ksummit-2012-discuss@lists.linux-foundation.org
> > 
> > Looking at the available rooms, we think we can run about four or five
> > mini summits.
> > 
> > As an added incentive, mini summit organisers get to pick who they
> > invite and all the people they pick will get an automatic invitation to
> > the third day of the kernel summit (but not the core first day) and the
> > evening events.
> 
> OK, so far I believe I've heard concrete suggestions from identified
> (or fairly well identified :-) stuckees willing to organize
> mini-summits for:
> 
> * ARM
> * Media
> * PCI
> * memcg
> 
> I may have missed some, so if people could send a message to the
> discuss list with [MINI-SUMMIT] in the subbject line and the name of
> the proposed mini-summit, that would be really helpful.  Please
> indicate whether you are volunteering to help organize the proposed
> mini-summit, or identify someone you think can be volunteered.  :-)
> 
> Things that we will be asking the mini-summit chars to determine, in
> addition to who should be given invites for Tuesday and Wednesday is
> an estimate of how much time you need, and a list of sub-topics (and
> who might lead the sub-topic discussion).  We will be asking you to
> create a fairly well-defined schedule, with 30 and 60 minute slots, so
> that we can publish a schedule and so that people who might need to
> hop between mini-summits, have a chance to do so.  So please start
> thinking about how long each of your sub-topics will need to be, and
> who might be needed for a particular sub-topic's discussion to be
> successful.  There may be a number of developers, with fingers in
> multiple subsystem, where scheduling may become a bit of a challenge.
> 
> Thanks!!
> 
> 						- Ted
> _______________________________________________
> Ksummit-2012-discuss mailing list
> Ksummit-2012-discuss@lists.linux-foundation.org
> https://lists.linux-foundation.org/mailman/listinfo/ksummit-2012-discuss
> 
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Laurent Pinchart]

Hi Hans,

On Tuesday 17 July 2012 21:32:22 Hans Verkuil wrote:
> On Tue July 17 2012 19:30:53 Mauro Carvalho Chehab wrote:
> > As we did in 2012, we're planning to do a media summit again at KS/2012.
> > 
> > The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> > before the LinuxCon North America.
> > 
> > In order to do it, I'd like to know who is interested on participate,
> > and to get proposals about what subjects will be discussed there,
> > in order to start planning the agenda.
> 
> I'd like to have 30 minutes to discuss a few V4L2 API ambiguities or just
> plain weirdness, just like I did last year. I'll make an RFC issues to
> discuss beforehand. I might also have a short presentation/demo of
> v4l2-compliance, as I believe more people need to know about that utility.

That's a good idea. On the topic of ambiguities, could you add VIDIOC_STREAMON 
and VIDIOC_STREAMOFF behaviour when the stream is already started/stopped 
respectively ?

-- 
Regards,

Laurent Pinchart

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Laurent Pinchart]

On Tuesday 17 July 2012 21:41:18 Laurent Pinchart wrote:
> Hi Hans,
> 
> On Tuesday 17 July 2012 21:32:22 Hans Verkuil wrote:
> > On Tue July 17 2012 19:30:53 Mauro Carvalho Chehab wrote:
> > > As we did in 2012, we're planning to do a media summit again at KS/2012.
> > > 
> > > The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> > > before the LinuxCon North America.
> > > 
> > > In order to do it, I'd like to know who is interested on participate,
> > > and to get proposals about what subjects will be discussed there,
> > > in order to start planning the agenda.
> > 
> > I'd like to have 30 minutes to discuss a few V4L2 API ambiguities or just
> > plain weirdness, just like I did last year. I'll make an RFC issues to
> > discuss beforehand. I might also have a short presentation/demo of
> > v4l2-compliance, as I believe more people need to know about that utility.
> 
> That's a good idea. On the topic of ambiguities, could you add
> VIDIOC_STREAMON and VIDIOC_STREAMOFF behaviour when the stream is already
> started/stopped respectively ?

Another ambiguity for your list: what should a driver return in TRY_FMT/S_FMT 
if the requested format is not supported (possible behaviours include 
returning the currently selected format or a default format).

-- 
Regards,

Laurent Pinchart

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Devin Heitmueller]

On Wed, Jul 18, 2012 at 10:00 AM, Laurent Pinchart
<laurent.pinchart@ideasonboard.com> wrote:
> Another ambiguity for your list: what should a driver return in TRY_FMT/S_FMT
> if the requested format is not supported (possible behaviours include
> returning the currently selected format or a default format).

Whatever gets decided in terms of eliminating the ambiguity, we should
definitely do a v4l2-compliance test for this.  I've seen drivers in
the past that return -EINVAL if the requested format is not supported
(which resulted in various userland apps inventing their own
workarounds over the years).

Devin

-- 
Devin J. Heitmueller - Kernel Labs
http://www.kernellabs.com

Re: Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Sylwester Nawrocki]

Hi Hans,

On 07/17/2012 09:32 PM, Hans Verkuil wrote:
> On Tue July 17 2012 19:30:53 Mauro Carvalho Chehab wrote:
>> As we did in 2012, we're planning to do a media summit again at KS/2012.
>>
>> The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
>> before the LinuxCon North America.
>>
>> In order to do it, I'd like to know who is interested on participate,
>> and to get proposals about what subjects will be discussed there,
>> in order to start planning the agenda.
>
> I'd like to have 30 minutes to discuss a few V4L2 API ambiguities or just
> plain weirdness, just like I did last year. I'll make an RFC issues to discuss
> beforehand. I might also have a short presentation/demo of v4l2-compliance, as
> I believe more people need to know about that utility.

What do you think about adding new M2M capability flag for memory-to-memory
video devices ? I prepared an RFC patch for that already:
http://www.mail-archive.com/linux-media@vger.kernel.org/msg48497.html

I think that at least qualifies to your list of V4L2 API ambiguities, even
though we have device_caps now. Using ORed OUTPUT and CAPTURE flags implies 
all existing applications must check now both flags when they're trying to 
discover a video capture or video output device.

--
Regards,
Sylwester

Re: Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Hans Verkuil]

On Sat July 21 2012 14:16:22 Sylwester Nawrocki wrote:
> Hi Hans,
> 
> On 07/17/2012 09:32 PM, Hans Verkuil wrote:
> > On Tue July 17 2012 19:30:53 Mauro Carvalho Chehab wrote:
> >> As we did in 2012, we're planning to do a media summit again at KS/2012.
> >>
> >> The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> >> before the LinuxCon North America.
> >>
> >> In order to do it, I'd like to know who is interested on participate,
> >> and to get proposals about what subjects will be discussed there,
> >> in order to start planning the agenda.
> >
> > I'd like to have 30 minutes to discuss a few V4L2 API ambiguities or just
> > plain weirdness, just like I did last year. I'll make an RFC issues to discuss
> > beforehand. I might also have a short presentation/demo of v4l2-compliance, as
> > I believe more people need to know about that utility.
> 
> What do you think about adding new M2M capability flag for memory-to-memory
> video devices ? I prepared an RFC patch for that already:
> http://www.mail-archive.com/linux-media@vger.kernel.org/msg48497.html
> 
> I think that at least qualifies to your list of V4L2 API ambiguities, even
> though we have device_caps now. Using ORed OUTPUT and CAPTURE flags implies 
> all existing applications must check now both flags when they're trying to 
> discover a video capture or video output device.

I agree. I've added to my list (which is getting pretty long BTW, I will
probably need more than 30 minutes).

When adding support for M2M devices to v4l2-compliance I also noticed that
using CAPTURE+OUTPUT is a rather awkward way to signal this capability, so
I agree to adding a special cap bit for that.

Regards,

	Hans

Re: Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Laurent Pinchart]

Hi Hans,

On Tuesday 17 July 2012 21:32:22 Hans Verkuil wrote:
> On Tue July 17 2012 19:30:53 Mauro Carvalho Chehab wrote:
> > As we did in 2012, we're planning to do a media summit again at KS/2012.
> > 
> > The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> > before the LinuxCon North America.
> > 
> > In order to do it, I'd like to know who is interested on participate,
> > and to get proposals about what subjects will be discussed there,
> > in order to start planning the agenda.
> 
> I'd like to have 30 minutes to discuss a few V4L2 API ambiguities or just
> plain weirdness, just like I did last year.

Another ambiguity for your list, should video output drivers fill the sequence 
and timestamp fields when returning a v4l2_buffer from VIDIOC_DQBUF ?

-- 
Regards,

Laurent Pinchart

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Guennadi Liakhovetski]

Hi Mauro

On Tue, 17 Jul 2012, Mauro Carvalho Chehab wrote:

> As we did in 2012, we're planning to do a media summit again at KS/2012.
> 
> The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> before the LinuxCon North America.
> 
> In order to do it, I'd like to know who is interested on participate,
> and to get proposals about what subjects will be discussed there,
> in order to start planning the agenda.

I'd love to attend, especially since, as you have seen, I've started doing 
some work on V4L DT bindings, but so far it very much looks like I won't 
be able to do so unfortunately.

Thanks
Guennadi

> 
> Thanks!
> Mauro
> 
> -------- Mensagem original --------
> Assunto: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit
> Data: Fri, 13 Jul 2012 13:37:08 -0400
> De: Theodore Ts'o <tytso@mit.edu>
> Para: James Bottomley <James.Bottomley@HansenPartnership.com>
> CC: ksummit-2012-discuss@lists.linux-foundation.org, linux-kernel <linux-kernel@vger.kernel.org>
> 
> On Wed, Jul 11, 2012 at 09:09:15AM +0100, James Bottomley wrote:
> > Hi All,
> > 
> > We have set aside the second day of the kernel summit (Tuesday 28
> > August) as mini-summit day.  So far we have only the PCI mini summit on
> > this day, so if you can think of other topics, please send them to the
> > kernel summit discuss list:
> > 
> > ksummit-2012-discuss@lists.linux-foundation.org
> > 
> > Looking at the available rooms, we think we can run about four or five
> > mini summits.
> > 
> > As an added incentive, mini summit organisers get to pick who they
> > invite and all the people they pick will get an automatic invitation to
> > the third day of the kernel summit (but not the core first day) and the
> > evening events.
> 
> OK, so far I believe I've heard concrete suggestions from identified
> (or fairly well identified :-) stuckees willing to organize
> mini-summits for:
> 
> * ARM
> * Media
> * PCI
> * memcg
> 
> I may have missed some, so if people could send a message to the
> discuss list with [MINI-SUMMIT] in the subbject line and the name of
> the proposed mini-summit, that would be really helpful.  Please
> indicate whether you are volunteering to help organize the proposed
> mini-summit, or identify someone you think can be volunteered.  :-)
> 
> Things that we will be asking the mini-summit chars to determine, in
> addition to who should be given invites for Tuesday and Wednesday is
> an estimate of how much time you need, and a list of sub-topics (and
> who might lead the sub-topic discussion).  We will be asking you to
> create a fairly well-defined schedule, with 30 and 60 minute slots, so
> that we can publish a schedule and so that people who might need to
> hop between mini-summits, have a chance to do so.  So please start
> thinking about how long each of your sub-topics will need to be, and
> who might be needed for a particular sub-topic's discussion to be
> successful.  There may be a number of developers, with fingers in
> multiple subsystem, where scheduling may become a bit of a challenge.
> 
> Thanks!!
> 
> 						- Ted
> _______________________________________________
> Ksummit-2012-discuss mailing list
> Ksummit-2012-discuss@lists.linux-foundation.org
> https://lists.linux-foundation.org/mailman/listinfo/ksummit-2012-discuss
> 
> 
> 
> _______________________________________________
> Workshop-2011 mailing list
> Workshop-2011@linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011
> 

---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Laurent Pinchart]

Hi Guennadi,

On Tuesday 17 July 2012 21:51:02 Guennadi Liakhovetski wrote:
> On Tue, 17 Jul 2012, Mauro Carvalho Chehab wrote:
> > As we did in 2012, we're planning to do a media summit again at KS/2012.
> > 
> > The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> > before the LinuxCon North America.
> > 
> > In order to do it, I'd like to know who is interested on participate,
> > and to get proposals about what subjects will be discussed there,
> > in order to start planning the agenda.
> 
> I'd love to attend, especially since, as you have seen, I've started doing
> some work on V4L DT bindings,

As you already know, that's a topic I'm very interested in. DT bindings will 
likely involve rethinking how the V4L2 core and V4L2 drivers instantiate 
subdevices, a media summit would have been a good occasion to discuss that. 
However, we probably need an RFC to start with.

> but so far it very much looks like I won't be able to do so unfortunately.

:-/

-- 
Regards,

Laurent Pinchart

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Guennadi Liakhovetski]

Hi Laurent

On Wed, 18 Jul 2012, Laurent Pinchart wrote:

> Hi Guennadi,
> 
> On Tuesday 17 July 2012 21:51:02 Guennadi Liakhovetski wrote:
> > On Tue, 17 Jul 2012, Mauro Carvalho Chehab wrote:
> > > As we did in 2012, we're planning to do a media summit again at KS/2012.
> > > 
> > > The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> > > before the LinuxCon North America.
> > > 
> > > In order to do it, I'd like to know who is interested on participate,
> > > and to get proposals about what subjects will be discussed there,
> > > in order to start planning the agenda.
> > 
> > I'd love to attend, especially since, as you have seen, I've started doing
> > some work on V4L DT bindings,
> 
> As you already know, that's a topic I'm very interested in. DT bindings will 
> likely involve rethinking how the V4L2 core and V4L2 drivers instantiate 
> subdevices, a media summit would have been a good occasion to discuss that. 
> However, we probably need an RFC to start with.

You've certainly seen these two RFCs currently being discussed:

http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/50755
http://thread.gmane.org/gmane.linux.kernel.samsung-soc/11143

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Laurent Pinchart]

Hi Guennadi,

On Wednesday 18 July 2012 10:30:28 Guennadi Liakhovetski wrote:
> On Wed, 18 Jul 2012, Laurent Pinchart wrote:
> > On Tuesday 17 July 2012 21:51:02 Guennadi Liakhovetski wrote:
> > > On Tue, 17 Jul 2012, Mauro Carvalho Chehab wrote:
> > > > As we did in 2012, we're planning to do a media summit again at
> > > > KS/2012.
> > > > 
> > > > The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> > > > before the LinuxCon North America.
> > > > 
> > > > In order to do it, I'd like to know who is interested on participate,
> > > > and to get proposals about what subjects will be discussed there,
> > > > in order to start planning the agenda.
> > > 
> > > I'd love to attend, especially since, as you have seen, I've started
> > > doing
> > > some work on V4L DT bindings,
> > 
> > As you already know, that's a topic I'm very interested in. DT bindings
> > will likely involve rethinking how the V4L2 core and V4L2 drivers
> > instantiate subdevices, a media summit would have been a good occasion to
> > discuss that. However, we probably need an RFC to start with.
> 
> You've certainly seen these two RFCs currently being discussed:
> 
> http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/50755

Sorry, I meant RFC patches. The devil (or part of it) will be in the details, 
solving race conditions and other similarly fun issues will require 
experimentation.

> http://thread.gmane.org/gmane.linux.kernel.samsung-soc/11143

I still need to review that one :-)

-- 
Regards,

Laurent Pinchart

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Guennadi Liakhovetski]

Hi Mauro

On Tue, 17 Jul 2012, Guennadi Liakhovetski wrote:

> Hi Mauro
> 
> On Tue, 17 Jul 2012, Mauro Carvalho Chehab wrote:
> 
> > As we did in 2012, we're planning to do a media summit again at KS/2012.
> > 
> > The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> > before the LinuxCon North America.
> > 
> > In order to do it, I'd like to know who is interested on participate,
> > and to get proposals about what subjects will be discussed there,
> > in order to start planning the agenda.
> 
> I'd love to attend, especially since, as you have seen, I've started doing 
> some work on V4L DT bindings, but so far it very much looks like I won't 
> be able to do so unfortunately.

Things change and sometimes also to the better:-) Looks like I'll be able 
to attend actually. So, please add me to the list.

Thanks
Guennadi

> > Thanks!
> > Mauro
> > 
> > -------- Mensagem original --------
> > Assunto: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit
> > Data: Fri, 13 Jul 2012 13:37:08 -0400
> > De: Theodore Ts'o <tytso@mit.edu>
> > Para: James Bottomley <James.Bottomley@HansenPartnership.com>
> > CC: ksummit-2012-discuss@lists.linux-foundation.org, linux-kernel <linux-kernel@vger.kernel.org>
> > 
> > On Wed, Jul 11, 2012 at 09:09:15AM +0100, James Bottomley wrote:
> > > Hi All,
> > > 
> > > We have set aside the second day of the kernel summit (Tuesday 28
> > > August) as mini-summit day.  So far we have only the PCI mini summit on
> > > this day, so if you can think of other topics, please send them to the
> > > kernel summit discuss list:
> > > 
> > > ksummit-2012-discuss@lists.linux-foundation.org
> > > 
> > > Looking at the available rooms, we think we can run about four or five
> > > mini summits.
> > > 
> > > As an added incentive, mini summit organisers get to pick who they
> > > invite and all the people they pick will get an automatic invitation to
> > > the third day of the kernel summit (but not the core first day) and the
> > > evening events.
> > 
> > OK, so far I believe I've heard concrete suggestions from identified
> > (or fairly well identified :-) stuckees willing to organize
> > mini-summits for:
> > 
> > * ARM
> > * Media
> > * PCI
> > * memcg
> > 
> > I may have missed some, so if people could send a message to the
> > discuss list with [MINI-SUMMIT] in the subbject line and the name of
> > the proposed mini-summit, that would be really helpful.  Please
> > indicate whether you are volunteering to help organize the proposed
> > mini-summit, or identify someone you think can be volunteered.  :-)
> > 
> > Things that we will be asking the mini-summit chars to determine, in
> > addition to who should be given invites for Tuesday and Wednesday is
> > an estimate of how much time you need, and a list of sub-topics (and
> > who might lead the sub-topic discussion).  We will be asking you to
> > create a fairly well-defined schedule, with 30 and 60 minute slots, so
> > that we can publish a schedule and so that people who might need to
> > hop between mini-summits, have a chance to do so.  So please start
> > thinking about how long each of your sub-topics will need to be, and
> > who might be needed for a particular sub-topic's discussion to be
> > successful.  There may be a number of developers, with fingers in
> > multiple subsystem, where scheduling may become a bit of a challenge.
> > 
> > Thanks!!
> > 
> > 						- Ted
> > _______________________________________________
> > Ksummit-2012-discuss mailing list
> > Ksummit-2012-discuss@lists.linux-foundation.org
> > https://lists.linux-foundation.org/mailman/listinfo/ksummit-2012-discuss
> > 
> > 
> > 
> > _______________________________________________
> > Workshop-2011 mailing list
> > Workshop-2011@linuxtv.org
> > http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011
> > 
> 
> ---
> Guennadi Liakhovetski, Ph.D.
> Freelance Open-Source Software Developer
> http://www.open-technology.de/
> 
> _______________________________________________
> Workshop-2011 mailing list
> Workshop-2011@linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011
> 

---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Michael Krufky]

Apologies for my late reply -- I plan to attend the conference!!!   I
am looking to book everything today...  I think I'm going to Barcelona
as well -- will you guys go to both conferences?

On Sat, Jul 21, 2012 at 1:06 AM, Guennadi Liakhovetski
<g.liakhovetski@gmx.de> wrote:
> Hi Mauro
>
> On Tue, 17 Jul 2012, Guennadi Liakhovetski wrote:
>
>> Hi Mauro
>>
>> On Tue, 17 Jul 2012, Mauro Carvalho Chehab wrote:
>>
>> > As we did in 2012, we're planning to do a media summit again at KS/2012.
>> >
>> > The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
>> > before the LinuxCon North America.
>> >
>> > In order to do it, I'd like to know who is interested on participate,
>> > and to get proposals about what subjects will be discussed there,
>> > in order to start planning the agenda.
>>
>> I'd love to attend, especially since, as you have seen, I've started doing
>> some work on V4L DT bindings, but so far it very much looks like I won't
>> be able to do so unfortunately.
>
> Things change and sometimes also to the better:-) Looks like I'll be able
> to attend actually. So, please add me to the list.
>
> Thanks
> Guennadi
>
>> > Thanks!
>> > Mauro
>> >
>> > -------- Mensagem original --------
>> > Assunto: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit
>> > Data: Fri, 13 Jul 2012 13:37:08 -0400
>> > De: Theodore Ts'o <tytso@mit.edu>
>> > Para: James Bottomley <James.Bottomley@HansenPartnership.com>
>> > CC: ksummit-2012-discuss@lists.linux-foundation.org, linux-kernel <linux-kernel@vger.kernel.org>
>> >
>> > On Wed, Jul 11, 2012 at 09:09:15AM +0100, James Bottomley wrote:
>> > > Hi All,
>> > >
>> > > We have set aside the second day of the kernel summit (Tuesday 28
>> > > August) as mini-summit day.  So far we have only the PCI mini summit on
>> > > this day, so if you can think of other topics, please send them to the
>> > > kernel summit discuss list:
>> > >
>> > > ksummit-2012-discuss@lists.linux-foundation.org
>> > >
>> > > Looking at the available rooms, we think we can run about four or five
>> > > mini summits.
>> > >
>> > > As an added incentive, mini summit organisers get to pick who they
>> > > invite and all the people they pick will get an automatic invitation to
>> > > the third day of the kernel summit (but not the core first day) and the
>> > > evening events.
>> >
>> > OK, so far I believe I've heard concrete suggestions from identified
>> > (or fairly well identified :-) stuckees willing to organize
>> > mini-summits for:
>> >
>> > * ARM
>> > * Media
>> > * PCI
>> > * memcg
>> >
>> > I may have missed some, so if people could send a message to the
>> > discuss list with [MINI-SUMMIT] in the subbject line and the name of
>> > the proposed mini-summit, that would be really helpful.  Please
>> > indicate whether you are volunteering to help organize the proposed
>> > mini-summit, or identify someone you think can be volunteered.  :-)
>> >
>> > Things that we will be asking the mini-summit chars to determine, in
>> > addition to who should be given invites for Tuesday and Wednesday is
>> > an estimate of how much time you need, and a list of sub-topics (and
>> > who might lead the sub-topic discussion).  We will be asking you to
>> > create a fairly well-defined schedule, with 30 and 60 minute slots, so
>> > that we can publish a schedule and so that people who might need to
>> > hop between mini-summits, have a chance to do so.  So please start
>> > thinking about how long each of your sub-topics will need to be, and
>> > who might be needed for a particular sub-topic's discussion to be
>> > successful.  There may be a number of developers, with fingers in
>> > multiple subsystem, where scheduling may become a bit of a challenge.
>> >
>> > Thanks!!
>> >
>> >                                             - Ted
>> > _______________________________________________
>> > Ksummit-2012-discuss mailing list
>> > Ksummit-2012-discuss@lists.linux-foundation.org
>> > https://lists.linux-foundation.org/mailman/listinfo/ksummit-2012-discuss
>> >
>> >
>> >
>> > _______________________________________________
>> > Workshop-2011 mailing list
>> > Workshop-2011@linuxtv.org
>> > http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011
>> >
>>
>> ---
>> Guennadi Liakhovetski, Ph.D.
>> Freelance Open-Source Software Developer
>> http://www.open-technology.de/
>>
>> _______________________________________________
>> Workshop-2011 mailing list
>> Workshop-2011@linuxtv.org
>> http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011
>>
>
> ---
> Guennadi Liakhovetski, Ph.D.
> Freelance Open-Source Software Developer
> http://www.open-technology.de/
>
> _______________________________________________
> Workshop-2011 mailing list
> Workshop-2011@linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Hans Verkuil]

On Tue July 24 2012 19:40:27 Michael Krufky wrote:
> Apologies for my late reply -- I plan to attend the conference!!!

Looking forward to seeing you again!

> I am looking to book everything today...  I think I'm going to Barcelona
> as well -- will you guys go to both conferences?

I'll be in Barcelona as well.

Regards,

	Hans

> 
> On Sat, Jul 21, 2012 at 1:06 AM, Guennadi Liakhovetski
> 
> <g.liakhovetski@gmx.de> wrote:
> > Hi Mauro
> > 
> > On Tue, 17 Jul 2012, Guennadi Liakhovetski wrote:
> >> Hi Mauro
> >> 
> >> On Tue, 17 Jul 2012, Mauro Carvalho Chehab wrote:
> >> > As we did in 2012, we're planning to do a media summit again at
> >> > KS/2012.
> >> > 
> >> > The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> >> > before the LinuxCon North America.
> >> > 
> >> > In order to do it, I'd like to know who is interested on participate,
> >> > and to get proposals about what subjects will be discussed there,
> >> > in order to start planning the agenda.
> >> 
> >> I'd love to attend, especially since, as you have seen, I've started
> >> doing some work on V4L DT bindings, but so far it very much looks like
> >> I won't be able to do so unfortunately.
> > 
> > Things change and sometimes also to the better:-) Looks like I'll be able
> > to attend actually. So, please add me to the list.
> > 
> > Thanks
> > Guennadi
> > 
> >> > Thanks!
> >> > Mauro
> >> > 
> >> > -------- Mensagem original --------
> >> > Assunto: Re: [Ksummit-2012-discuss] Organising Mini Summits within the
> >> > Kernel Summit Data: Fri, 13 Jul 2012 13:37:08 -0400
> >> > De: Theodore Ts'o <tytso@mit.edu>
> >> > Para: James Bottomley <James.Bottomley@HansenPartnership.com>
> >> > CC: ksummit-2012-discuss@lists.linux-foundation.org, linux-kernel
> >> > <linux-kernel@vger.kernel.org>
> >> > 
> >> > On Wed, Jul 11, 2012 at 09:09:15AM +0100, James Bottomley wrote:
> >> > > Hi All,
> >> > > 
> >> > > We have set aside the second day of the kernel summit (Tuesday 28
> >> > > August) as mini-summit day.  So far we have only the PCI mini summit
> >> > > on this day, so if you can think of other topics, please send them
> >> > > to the kernel summit discuss list:
> >> > > 
> >> > > ksummit-2012-discuss@lists.linux-foundation.org
> >> > > 
> >> > > Looking at the available rooms, we think we can run about four or
> >> > > five mini summits.
> >> > > 
> >> > > As an added incentive, mini summit organisers get to pick who they
> >> > > invite and all the people they pick will get an automatic invitation
> >> > > to the third day of the kernel summit (but not the core first day)
> >> > > and the evening events.
> >> > 
> >> > OK, so far I believe I've heard concrete suggestions from identified
> >> > (or fairly well identified :-) stuckees willing to organize
> >> > mini-summits for:
> >> > 
> >> > * ARM
> >> > * Media
> >> > * PCI
> >> > * memcg
> >> > 
> >> > I may have missed some, so if people could send a message to the
> >> > discuss list with [MINI-SUMMIT] in the subbject line and the name of
> >> > the proposed mini-summit, that would be really helpful.  Please
> >> > indicate whether you are volunteering to help organize the proposed
> >> > mini-summit, or identify someone you think can be volunteered.  :-)
> >> > 
> >> > Things that we will be asking the mini-summit chars to determine, in
> >> > addition to who should be given invites for Tuesday and Wednesday is
> >> > an estimate of how much time you need, and a list of sub-topics (and
> >> > who might lead the sub-topic discussion).  We will be asking you to
> >> > create a fairly well-defined schedule, with 30 and 60 minute slots, so
> >> > that we can publish a schedule and so that people who might need to
> >> > hop between mini-summits, have a chance to do so.  So please start
> >> > thinking about how long each of your sub-topics will need to be, and
> >> > who might be needed for a particular sub-topic's discussion to be
> >> > successful.  There may be a number of developers, with fingers in
> >> > multiple subsystem, where scheduling may become a bit of a challenge.
> >> > 
> >> > Thanks!!
> >> > 
> >> >                                             - Ted
> >> > 
> >> > _______________________________________________
> >> > Ksummit-2012-discuss mailing list
> >> > Ksummit-2012-discuss@lists.linux-foundation.org
> >> > https://lists.linux-foundation.org/mailman/listinfo/ksummit-2012-discu
> >> > ss
> >> > 
> >> > 
> >> > 
> >> > _______________________________________________
> >> > Workshop-2011 mailing list
> >> > Workshop-2011@linuxtv.org
> >> > http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011
> >> 
> >> ---
> >> Guennadi Liakhovetski, Ph.D.
> >> Freelance Open-Source Software Developer
> >> http://www.open-technology.de/
> >> 
> >> _______________________________________________
> >> Workshop-2011 mailing list
> >> Workshop-2011@linuxtv.org
> >> http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011
> > 
> > ---
> > Guennadi Liakhovetski, Ph.D.
> > Freelance Open-Source Software Developer
> > http://www.open-technology.de/
> > 
> > _______________________________________________
> > Workshop-2011 mailing list
> > Workshop-2011@linuxtv.org
> > http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011
> 
> _______________________________________________
> Workshop-2011 mailing list
> Workshop-2011@linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Mauro Carvalho Chehab]

Em 24-07-2012 14:40, Michael Krufky escreveu:
> Apologies for my late reply -- I plan to attend the conference!!!   

Great!

> I am looking to book everything today...  I think I'm going to Barcelona
> as well -- will you guys go to both conferences?

Didn't planned yet to be in Barcelona.

Regards,
Mauro

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Hans Verkuil]

On Tue July 24 2012 19:40:27 Michael Krufky wrote:
> Apologies for my late reply -- I plan to attend the conference!!!   I
> am looking to book everything today...  I think I'm going to Barcelona
> as well -- will you guys go to both conferences?

I plan on going to Barcelona as well.

Regards,

	Hans

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Mauro Carvalho Chehab]

Em 21-07-2012 02:06, Guennadi Liakhovetski escreveu:
> Hi Mauro
> 
> On Tue, 17 Jul 2012, Guennadi Liakhovetski wrote:
> 
>> Hi Mauro
>>
>> On Tue, 17 Jul 2012, Mauro Carvalho Chehab wrote:
>>
>>> As we did in 2012, we're planning to do a media summit again at KS/2012.
>>>
>>> The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
>>> before the LinuxCon North America.
>>>
>>> In order to do it, I'd like to know who is interested on participate,
>>> and to get proposals about what subjects will be discussed there,
>>> in order to start planning the agenda.
>>
>> I'd love to attend, especially since, as you have seen, I've started doing 
>> some work on V4L DT bindings, but so far it very much looks like I won't 
>> be able to do so unfortunately.
> 
> Things change and sometimes also to the better:-) Looks like I'll be able 
> to attend actually. So, please add me to the list.

Great to know!

Regards,
Mauro

RE: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Naveen KRISHNAMURTHY]

Hi Mauro,

Can you please provide the schedule for the linuxTV discussions this time at San Diego? Which day will it be on? If you have a detailed schedule, please pass on. I am planning to be in only on that day as I cannot stay back more than that this time around.

Regards
Naveen

-----Original Message-----
From: workshop-2011-bounces@linuxtv.org [mailto:workshop-2011-bounces@linuxtv.org] On Behalf Of Mauro Carvalho Chehab
Sent: Tuesday, July 31, 2012 10:23 AM
To: Guennadi Liakhovetski
Cc: workshop-2011@linuxtv.org; Linux Media Mailing List
Subject: Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

Em 21-07-2012 02:06, Guennadi Liakhovetski escreveu:
> Hi Mauro
> 
> On Tue, 17 Jul 2012, Guennadi Liakhovetski wrote:
> 
>> Hi Mauro
>>
>> On Tue, 17 Jul 2012, Mauro Carvalho Chehab wrote:
>>
>>> As we did in 2012, we're planning to do a media summit again at KS/2012.
>>>
>>> The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
>>> before the LinuxCon North America.
>>>
>>> In order to do it, I'd like to know who is interested on participate,
>>> and to get proposals about what subjects will be discussed there,
>>> in order to start planning the agenda.
>>
>> I'd love to attend, especially since, as you have seen, I've started doing 
>> some work on V4L DT bindings, but so far it very much looks like I won't 
>> be able to do so unfortunately.
> 
> Things change and sometimes also to the better:-) Looks like I'll be able 
> to attend actually. So, please add me to the list.

Great to know!

Regards,
Mauro


_______________________________________________
Workshop-2011 mailing list
Workshop-2011@linuxtv.org
http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Mauro Carvalho Chehab]

Hi Naveen,

Em 22-08-2012 18:39, Naveen KRISHNAMURTHY escreveu:
> Hi Mauro,
> 
> Can you please provide the schedule for the linuxTV discussions this time at San Diego?
> Which day will it be on? If you have a detailed schedule, please pass on. I am planning 
> to be in only on that day as I cannot stay back more than that this time around.

The media workshop will be at Tuesday, August 28th, with the following agenda,
for the ones that got the invitation:

    morning:
           V4L2 API ambiguities + v4l2 compliance tool: 60 min
           Media Controller library: 30 min
           ALSA and V4L/Media Controller: 30 min
           ARM and needed features for V4L/DVB: 30 min
    - after lunch: 
           SoC Vendors feedback – how to help them to go upstream: 45 min
           V4L2/DVB issues from userspace perspective: 45 min
           Android's V4L2 cam library: 30 min
           HDMI CEC: 30 min
           Synchronization, shared resource and optimizations: 30 min

On Wednesday, August 29th, there will be open plenary sections, together
with the other Kernel Summit participants.

Regards,
Mauro

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Guennadi Liakhovetski]

Hi Mauro

On Fri, 24 Aug 2012, Mauro Carvalho Chehab wrote:

> Hi Naveen,
> 
> Em 22-08-2012 18:39, Naveen KRISHNAMURTHY escreveu:
> > Hi Mauro,
> > 
> > Can you please provide the schedule for the linuxTV discussions this time at San Diego?
> > Which day will it be on? If you have a detailed schedule, please pass on. I am planning 
> > to be in only on that day as I cannot stay back more than that this time around.
> 
> The media workshop will be at Tuesday, August 28th, with the following agenda,
> for the ones that got the invitation:
> 
>     morning:
>            V4L2 API ambiguities + v4l2 compliance tool: 60 min
>            Media Controller library: 30 min
>            ALSA and V4L/Media Controller: 30 min
>            ARM and needed features for V4L/DVB: 30 min
>     - after lunch: 
>            SoC Vendors feedback – how to help them to go upstream: 45 min
>            V4L2/DVB issues from userspace perspective: 45 min
>            Android's V4L2 cam library: 30 min

Wow, this is interesting... Have I proposed this? :-) Or is anyone else 
working on an alternative solution?... I don't mind talking about this, if 
indeed my work is meant, just really cannot remember discussing taking 
this topic to the KS... I might have forgotten though... /me confused :-)

>            HDMI CEC: 30 min
>            Synchronization, shared resource and optimizations: 30 min

What happened to the V4L DT topic? I believe, Sylwester and I have been 
discussing this pretty intensively over the last couple of weeks and, 
hopefully, are just about to submit an example V4L .dts fragment.

> On Wednesday, August 29th, there will be open plenary sections, together
> with the other Kernel Summit participants.

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Laurent Pinchart]

Hi Guennadi,

On Friday 24 August 2012 14:11:58 Guennadi Liakhovetski wrote:
> On Fri, 24 Aug 2012, Mauro Carvalho Chehab wrote:
> > Em 22-08-2012 18:39, Naveen KRISHNAMURTHY escreveu:
> > > Hi Mauro,
> > > 
> > > Can you please provide the schedule for the linuxTV discussions this
> > > time at San Diego? Which day will it be on? If you have a detailed
> > > schedule, please pass on. I am planning to be in only on that day as I
> > > cannot stay back more than that this time around.> 
> >
> > The media workshop will be at Tuesday, August 28th, with the following
> > agenda, for the ones that got the invitation:
> >     morning:
> >            V4L2 API ambiguities + v4l2 compliance tool: 60 min
> >            Media Controller library: 30 min
> >            ALSA and V4L/Media Controller: 30 min
> >            ARM and needed features for V4L/DVB: 30 min
> >     
> >     - after lunch:
> >            SoC Vendors feedback – how to help them to go upstream: 45 min
> >            V4L2/DVB issues from userspace perspective: 45 min
> >            Android's V4L2 cam library: 30 min
> 
> Wow, this is interesting... Have I proposed this? :-) Or is anyone else
> working on an alternative solution?... I don't mind talking about this, if
> indeed my work is meant, just really cannot remember discussing taking
> this topic to the KS... I might have forgotten though... /me confused :-)
> 
> >            HDMI CEC: 30 min
> >            Synchronization, shared resource and optimizations: 30 min
> 
> What happened to the V4L DT topic? I believe, Sylwester and I have been
> discussing this pretty intensively over the last couple of weeks and,
> hopefully, are just about to submit an example V4L .dts fragment.

I believe it was deemed to be a too complex topic that would take too much 
time to fit in the schedule. I will be free on Monday to discuss this, should 
we organize a (informal) meeting ?

> > On Wednesday, August 29th, there will be open plenary sections, together
> > with the other Kernel Summit participants.

-- 
Regards,

Laurent Pinchart

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Guennadi Liakhovetski]

Hi Laurent

On Fri, 24 Aug 2012, Laurent Pinchart wrote:

> Hi Guennadi,
> 
> On Friday 24 August 2012 14:11:58 Guennadi Liakhovetski wrote:
> > On Fri, 24 Aug 2012, Mauro Carvalho Chehab wrote:
> > > Em 22-08-2012 18:39, Naveen KRISHNAMURTHY escreveu:
> > > > Hi Mauro,
> > > > 
> > > > Can you please provide the schedule for the linuxTV discussions this
> > > > time at San Diego? Which day will it be on? If you have a detailed
> > > > schedule, please pass on. I am planning to be in only on that day as I
> > > > cannot stay back more than that this time around.> 
> > >
> > > The media workshop will be at Tuesday, August 28th, with the following
> > > agenda, for the ones that got the invitation:
> > >     morning:
> > >            V4L2 API ambiguities + v4l2 compliance tool: 60 min
> > >            Media Controller library: 30 min
> > >            ALSA and V4L/Media Controller: 30 min
> > >            ARM and needed features for V4L/DVB: 30 min
> > >     
> > >     - after lunch:
> > >            SoC Vendors feedback – how to help them to go upstream: 45 min
> > >            V4L2/DVB issues from userspace perspective: 45 min
> > >            Android's V4L2 cam library: 30 min
> > 
> > Wow, this is interesting... Have I proposed this? :-) Or is anyone else
> > working on an alternative solution?... I don't mind talking about this, if
> > indeed my work is meant, just really cannot remember discussing taking
> > this topic to the KS... I might have forgotten though... /me confused :-)
> > 
> > >            HDMI CEC: 30 min
> > >            Synchronization, shared resource and optimizations: 30 min
> > 
> > What happened to the V4L DT topic? I believe, Sylwester and I have been
> > discussing this pretty intensively over the last couple of weeks and,
> > hopefully, are just about to submit an example V4L .dts fragment.
> 
> I believe it was deemed to be a too complex topic that would take too much 
> time to fit in the schedule. I will be free on Monday to discuss this, should 
> we organize a (informal) meeting ?

Sure, everyone is most welcome to join me on the plane;-) I should arrive 
to the airport at 18:15, so, if anyone would like to talk to me after a 
13.5-hour trip - we can try that:-)

> > > On Wednesday, August 29th, there will be open plenary sections, together
> > > with the other Kernel Summit participants.

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Mauro Carvalho Chehab]

Em 24-08-2012 09:41, Guennadi Liakhovetski escreveu:
> Hi Laurent
> 
> On Fri, 24 Aug 2012, Laurent Pinchart wrote:
> 
>> Hi Guennadi,
>>
>> On Friday 24 August 2012 14:11:58 Guennadi Liakhovetski wrote:
>>> On Fri, 24 Aug 2012, Mauro Carvalho Chehab wrote:
>>>> Em 22-08-2012 18:39, Naveen KRISHNAMURTHY escreveu:
>>>>> Hi Mauro,
>>>>>
>>>>> Can you please provide the schedule for the linuxTV discussions this
>>>>> time at San Diego? Which day will it be on? If you have a detailed
>>>>> schedule, please pass on. I am planning to be in only on that day as I
>>>>> cannot stay back more than that this time around.> 
>>>>
>>>> The media workshop will be at Tuesday, August 28th, with the following
>>>> agenda, for the ones that got the invitation:
>>>>     morning:
>>>>            V4L2 API ambiguities + v4l2 compliance tool: 60 min
>>>>            Media Controller library: 30 min
>>>>            ALSA and V4L/Media Controller: 30 min
>>>>            ARM and needed features for V4L/DVB: 30 min
>>>>     
>>>>     - after lunch:
>>>>            SoC Vendors feedback – how to help them to go upstream: 45 min
>>>>            V4L2/DVB issues from userspace perspective: 45 min
>>>>            Android's V4L2 cam library: 30 min
>>>
>>> Wow, this is interesting... Have I proposed this? :-) Or is anyone else
>>> working on an alternative solution?... I don't mind talking about this, if
>>> indeed my work is meant, just really cannot remember discussing taking
>>> this topic to the KS... I might have forgotten though... /me confused :-)

It was proposed by someone ;) I think you said you would be giving this
talk, if I'm not mistaken, on the discussions we had. So, we're counting
on you ;)


>>>
>>>>            HDMI CEC: 30 min
>>>>            Synchronization, shared resource and optimizations: 30 min
>>>
>>> What happened to the V4L DT topic? I believe, Sylwester and I have been
>>> discussing this pretty intensively over the last couple of weeks and,
>>> hopefully, are just about to submit an example V4L .dts fragment.

There was some discussions about having a DT summit or BoF there, so
it was left away from the media workshop, due to the lack of time for all
panels there (and since this is really a DT-specific theme). I didn't
track if the DT workshop got actually scheduled or not.
>>
>> I believe it was deemed to be a too complex topic that would take too much 
>> time to fit in the schedule. I will be free on Monday to discuss this, should 
>> we organize a (informal) meeting ?
> 
> Sure, everyone is most welcome to join me on the plane;-) I should arrive 
> to the airport at 18:15, so, if anyone would like to talk to me after a 
> 13.5-hour trip - we can try that:-)

I'm sure you'll be able to find some time along the week to do such
meeting. In my case, I don't feel I need to be on such discussions,
as this is not directly related to the media API, and such patches go
though other trees (or though media tree, but with DT maintainers
acks). Yet, I'd like to know about the end results of such discussions, 
in order to keep track of it.

Regards,
Mauro

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Guennadi Liakhovetski]

On Fri, 24 Aug 2012, Mauro Carvalho Chehab wrote:

> Em 24-08-2012 09:41, Guennadi Liakhovetski escreveu:
> > Hi Laurent
> > 
> > On Fri, 24 Aug 2012, Laurent Pinchart wrote:
> > 
> >> Hi Guennadi,
> >>
> >> On Friday 24 August 2012 14:11:58 Guennadi Liakhovetski wrote:
> >>> On Fri, 24 Aug 2012, Mauro Carvalho Chehab wrote:
> >>>> Em 22-08-2012 18:39, Naveen KRISHNAMURTHY escreveu:
> >>>>> Hi Mauro,
> >>>>>
> >>>>> Can you please provide the schedule for the linuxTV discussions this
> >>>>> time at San Diego? Which day will it be on? If you have a detailed
> >>>>> schedule, please pass on. I am planning to be in only on that day as I
> >>>>> cannot stay back more than that this time around.> 
> >>>>
> >>>> The media workshop will be at Tuesday, August 28th, with the following
> >>>> agenda, for the ones that got the invitation:
> >>>>     morning:
> >>>>            V4L2 API ambiguities + v4l2 compliance tool: 60 min
> >>>>            Media Controller library: 30 min
> >>>>            ALSA and V4L/Media Controller: 30 min
> >>>>            ARM and needed features for V4L/DVB: 30 min
> >>>>     
> >>>>     - after lunch:
> >>>>            SoC Vendors feedback – how to help them to go upstream: 45 min
> >>>>            V4L2/DVB issues from userspace perspective: 45 min
> >>>>            Android's V4L2 cam library: 30 min
> >>>
> >>> Wow, this is interesting... Have I proposed this? :-) Or is anyone else
> >>> working on an alternative solution?... I don't mind talking about this, if
> >>> indeed my work is meant, just really cannot remember discussing taking
> >>> this topic to the KS... I might have forgotten though... /me confused :-)
> 
> It was proposed by someone ;) I think you said you would be giving this
> talk, if I'm not mistaken, on the discussions we had. So, we're counting
> on you ;)

Ok, np, I'll make something up ;-)

> >>>>            HDMI CEC: 30 min
> >>>>            Synchronization, shared resource and optimizations: 30 min
> >>>
> >>> What happened to the V4L DT topic? I believe, Sylwester and I have been
> >>> discussing this pretty intensively over the last couple of weeks and,
> >>> hopefully, are just about to submit an example V4L .dts fragment.
> 
> There was some discussions about having a DT summit or BoF there, so
> it was left away from the media workshop, due to the lack of time for all
> panels there (and since this is really a DT-specific theme). I didn't
> track if the DT workshop got actually scheduled or not.
> >>
> >> I believe it was deemed to be a too complex topic that would take too much 
> >> time to fit in the schedule. I will be free on Monday to discuss this, should 
> >> we organize a (informal) meeting ?
> > 
> > Sure, everyone is most welcome to join me on the plane;-) I should arrive 
> > to the airport at 18:15, so, if anyone would like to talk to me after a 
> > 13.5-hour trip - we can try that:-)
> 
> I'm sure you'll be able to find some time along the week to do such
> meeting. In my case, I don't feel I need to be on such discussions,
> as this is not directly related to the media API, and such patches go
> though other trees (or though media tree, but with DT maintainers
> acks). Yet, I'd like to know about the end results of such discussions, 
> in order to keep track of it.

ok, we'll see what becomes possible.

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Laurent Pinchart]

Hi Mauro,

On Tuesday 17 July 2012 14:30:53 Mauro Carvalho Chehab wrote:
> As we did in 2012, we're planning to do a media summit again at KS/2012.

Great news!

> The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just before
> the LinuxCon North America.
> 
> In order to do it, I'd like to know who is interested on participate, and to
> get proposals about what subjects will be discussed there, in order to start
> planning the agenda.

Sakari and I will spend time on the long-awaited media controller library in a 
couple of weeks, I hope to have results to present during the summit.

Depending on the audience, I would also be interested in getting feedback from 
SoC vendors who are not (yet) active in the V4L2 community on our approach and 
how we could best help them. This could include discussions about Android, as 
I believe we need to push V4L2 on that platform. Guennadi's recent work on an 
Android V4L2 camera library is a good first step in that direction.

-- 
Regards,

Laurent Pinchart

RE: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Palash Bandyopadhyay]

Count me in when we have this discussion as this is something we too are working on.

Rgds,
Palash

-----Original Message-----
From: workshop-2011-bounces@linuxtv.org [mailto:workshop-2011-bounces@linuxtv.org] On Behalf Of Laurent Pinchart
Sent: Tuesday, July 17, 2012 3:47 PM
To: workshop-2011@linuxtv.org
Cc: Linux Media Mailing List
Subject: Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

Hi Mauro,

On Tuesday 17 July 2012 14:30:53 Mauro Carvalho Chehab wrote:
> As we did in 2012, we're planning to do a media summit again at KS/2012.

Great news!

> The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just 
> before the LinuxCon North America.
> 
> In order to do it, I'd like to know who is interested on participate, 
> and to get proposals about what subjects will be discussed there, in 
> order to start planning the agenda.

Sakari and I will spend time on the long-awaited media controller library in a couple of weeks, I hope to have results to present during the summit.

Depending on the audience, I would also be interested in getting feedback from SoC vendors who are not (yet) active in the V4L2 community on our approach and how we could best help them. This could include discussions about Android, as I believe we need to push V4L2 on that platform. Guennadi's recent work on an Android V4L2 camera library is a good first step in that direction.

-- 
Regards,

Laurent Pinchart


_______________________________________________
Workshop-2011 mailing list
Workshop-2011@linuxtv.org
http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011

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Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Laurent Pinchart]

Hi Palash,

On Tuesday 17 July 2012 15:57:18 Palash Bandyopadhyay wrote:
> Count me in when we have this discussion as this is something we too are
> working on.

Which one, the media controller library, or Android ?

> On Tuesday, July 17, 2012 3:47 PM Laurent Pinchart wrote:
> > On Tuesday 17 July 2012 14:30:53 Mauro Carvalho Chehab wrote:
> > > As we did in 2012, we're planning to do a media summit again at KS/2012.
> > 
> > Great news!
> > 
> > > The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> > > before the LinuxCon North America.
> > > 
> > > In order to do it, I'd like to know who is interested on participate,
> > > and to get proposals about what subjects will be discussed there, in
> > > order to start planning the agenda.
> > 
> > Sakari and I will spend time on the long-awaited media controller library
> > in a couple of weeks, I hope to have results to present during the summit.
> > 
> > Depending on the audience, I would also be interested in getting feedback
> > from SoC vendors who are not (yet) active in the V4L2 community on our
> > approach and how we could best help them. This could include discussions
> > about Android, as I believe we need to push V4L2 on that platform.
> > Guennadi's recent work on an Android V4L2 camera library is a good first
> > step in that direction.

-- 
Regards,

Laurent Pinchart

RE: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Palash Bandyopadhyay]

Android

-palash

-----Original Message-----
From: Laurent Pinchart [mailto:laurent.pinchart@ideasonboard.com] 
Sent: Wednesday, July 18, 2012 4:37 AM
To: Palash Bandyopadhyay
Cc: workshop-2011@linuxtv.org; Linux Media Mailing List
Subject: Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

Hi Palash,

On Tuesday 17 July 2012 15:57:18 Palash Bandyopadhyay wrote:
> Count me in when we have this discussion as this is something we too 
> are working on.

Which one, the media controller library, or Android ?

> On Tuesday, July 17, 2012 3:47 PM Laurent Pinchart wrote:
> > On Tuesday 17 July 2012 14:30:53 Mauro Carvalho Chehab wrote:
> > > As we did in 2012, we're planning to do a media summit again at KS/2012.
> > 
> > Great news!
> > 
> > > The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, 
> > > just before the LinuxCon North America.
> > > 
> > > In order to do it, I'd like to know who is interested on 
> > > participate, and to get proposals about what subjects will be 
> > > discussed there, in order to start planning the agenda.
> > 
> > Sakari and I will spend time on the long-awaited media controller 
> > library in a couple of weeks, I hope to have results to present during the summit.
> > 
> > Depending on the audience, I would also be interested in getting 
> > feedback from SoC vendors who are not (yet) active in the V4L2 
> > community on our approach and how we could best help them. This 
> > could include discussions about Android, as I believe we need to push V4L2 on that platform.
> > Guennadi's recent work on an Android V4L2 camera library is a good 
> > first step in that direction.

--
Regards,

Laurent Pinchart


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Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Mauro Carvalho Chehab]

Em 17-07-2012 19:46, Laurent Pinchart escreveu:
> Hi Mauro,
> 
> On Tuesday 17 July 2012 14:30:53 Mauro Carvalho Chehab wrote:
>> As we did in 2012, we're planning to do a media summit again at KS/2012.
> 
> Great news!
> 
>> The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just before
>> the LinuxCon North America.
>>
>> In order to do it, I'd like to know who is interested on participate, and to
>> get proposals about what subjects will be discussed there, in order to start
>> planning the agenda.
> 
> Sakari and I will spend time on the long-awaited media controller library in a 
> couple of weeks, I hope to have results to present during the summit.

Great!

> Depending on the audience, I would also be interested in getting feedback from 
> SoC vendors who are not (yet) active in the V4L2 community on our approach and 
> how we could best help them. This could include discussions about Android, as 
> I believe we need to push V4L2 on that platform. Guennadi's recent work on an 
> Android V4L2 camera library is a good first step in that direction.

Excelent idea. I'll be adding it at the topics proposal summary.

Thanks,
Mauro

Re: Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Pawel Osciak]

Hi Mauro,
Great news, please count me in. We are currently building a new
ChromeOS graphics/media stack based on V4L2, vb2, dmabuf, DRM and GL.
Synchronization/shared resource usage is one important topic for
discussion, as well as, depending on interest, perhaps optimizations
like CPU cache maintenance, dmabuf hint/caching sglists, sharing
mappings between drivers, etc. Perhaps others would also have
something to add to this list.

Thanks!
Pawel Osciak


On Tue, Jul 17, 2012 at 10:30 AM, Mauro Carvalho Chehab
<mchehab@redhat.com> wrote:
> As we did in 2012, we're planning to do a media summit again at KS/2012.
>
> The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> before the LinuxCon North America.
>
> In order to do it, I'd like to know who is interested on participate,
> and to get proposals about what subjects will be discussed there,
> in order to start planning the agenda.
>
> Thanks!
> Mauro
>
> -------- Mensagem original --------
> Assunto: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit
> Data: Fri, 13 Jul 2012 13:37:08 -0400
> De: Theodore Ts'o <tytso@mit.edu>
> Para: James Bottomley <James.Bottomley@HansenPartnership.com>
> CC: ksummit-2012-discuss@lists.linux-foundation.org, linux-kernel <linux-kernel@vger.kernel.org>
>
> On Wed, Jul 11, 2012 at 09:09:15AM +0100, James Bottomley wrote:
>> Hi All,
>>
>> We have set aside the second day of the kernel summit (Tuesday 28
>> August) as mini-summit day.  So far we have only the PCI mini summit on
>> this day, so if you can think of other topics, please send them to the
>> kernel summit discuss list:
>>
>> ksummit-2012-discuss@lists.linux-foundation.org
>>
>> Looking at the available rooms, we think we can run about four or five
>> mini summits.
>>
>> As an added incentive, mini summit organisers get to pick who they
>> invite and all the people they pick will get an automatic invitation to
>> the third day of the kernel summit (but not the core first day) and the
>> evening events.
>
> OK, so far I believe I've heard concrete suggestions from identified
> (or fairly well identified :-) stuckees willing to organize
> mini-summits for:
>
> * ARM
> * Media
> * PCI
> * memcg
>
> I may have missed some, so if people could send a message to the
> discuss list with [MINI-SUMMIT] in the subbject line and the name of
> the proposed mini-summit, that would be really helpful.  Please
> indicate whether you are volunteering to help organize the proposed
> mini-summit, or identify someone you think can be volunteered.  :-)
>
> Things that we will be asking the mini-summit chars to determine, in
> addition to who should be given invites for Tuesday and Wednesday is
> an estimate of how much time you need, and a list of sub-topics (and
> who might lead the sub-topic discussion).  We will be asking you to
> create a fairly well-defined schedule, with 30 and 60 minute slots, so
> that we can publish a schedule and so that people who might need to
> hop between mini-summits, have a chance to do so.  So please start
> thinking about how long each of your sub-topics will need to be, and
> who might be needed for a particular sub-topic's discussion to be
> successful.  There may be a number of developers, with fingers in
> multiple subsystem, where scheduling may become a bit of a challenge.
>
> Thanks!!
>
>                                                 - Ted
> _______________________________________________
> Ksummit-2012-discuss mailing list
> Ksummit-2012-discuss@lists.linux-foundation.org
> https://lists.linux-foundation.org/mailman/listinfo/ksummit-2012-discuss
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html



-- 
Best regards,
Pawel Osciak

Re: Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Rémi Denis-Courmont]

	Hello,

Le mardi 17 juillet 2012 20:30:53 Mauro Carvalho Chehab, vous avez écrit :
> As we did in 2012, we're planning to do a media summit again at KS/2012.
> 
> The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> before the LinuxCon North America.
> 
> In order to do it, I'd like to know who is interested on participate,
> and to get proposals about what subjects will be discussed there,
> in order to start planning the agenda.

If it's of interest to anyone, I could probably present a bunch of issues with 
V4L2 and DVB from userspace perspective.

Regards,

-- 
Rémi Denis-Courmont
http://www.remlab.net/
http://fi.linkedin.com/in/remidenis

Re: Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Devin Heitmueller]

On Tue, Jul 24, 2012 at 4:05 PM, Rémi Denis-Courmont <remi@remlab.net> wrote:
> If it's of interest to anyone, I could probably present a bunch of issues with
> V4L2 and DVB from userspace perspective.

Remi,

I would strongly be in favor of this.  One thing that we get far to
little of is feedback from actual userland developers making use of
the V4L and DVB interfaces (aside from the SoC vendors, which is a
completely different target audience than the traditional V4L and DVB
consumers)

Devin

-- 
Devin J. Heitmueller - Kernel Labs
http://www.kernellabs.com

Re: Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Andy Walls]

Devin Heitmueller <dheitmueller@kernellabs.com> wrote:

>On Tue, Jul 24, 2012 at 4:05 PM, Rémi Denis-Courmont <remi@remlab.net>
>wrote:
>> If it's of interest to anyone, I could probably present a bunch of
>issues with
>> V4L2 and DVB from userspace perspective.
>
>Remi,
>
>I would strongly be in favor of this.  One thing that we get far to
>little of is feedback from actual userland developers making use of
>the V4L and DVB interfaces (aside from the SoC vendors, which is a
>completely different target audience than the traditional V4L and DVB
>consumers)
>
>Devin
>
>-- 
>Devin J. Heitmueller - Kernel Labs
>http://www.kernellabs.com
>--
>To unsubscribe from this list: send the line "unsubscribe linux-media"
>in
>the body of a message to majordomo@vger.kernel.org
>More majordomo info at  http://vger.kernel.org/majordomo-info.html

Ditto.  Input from user application developers  is something that kernel developers need and value greatly.

Note, that I will not be at the workshop of Plumbers this year. :( 

Regards,
Andy

Re: Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Rémi Denis-Courmont]

Le mardi 24 juillet 2012 23:31:42 Andy Walls, vous avez écrit :
> >I would strongly be in favor of this.  One thing that we get far to
> >little of is feedback from actual userland developers making use of
> >the V4L and DVB interfaces (aside from the SoC vendors, which is a
> >completely different target audience than the traditional V4L and DVB
> >consumers)
> >
> >Devin
> 
> Ditto.  Input from user application developers  is something that kernel
> developers need and value greatly.
> 
> Note, that I will not be at the workshop of Plumbers this year. :(

Is the media summit timed with LPC or the kernel summit? If I come, I have to 
leave on Thursday to catch the VideoLAN conference in Paris on the next week-
end...

-- 
Rémi Denis-Courmont
http://www.remlab.net/
http://fi.linkedin.com/in/remidenis

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Hans Verkuil]

On Tue July 24 2012 22:37:35 Rémi Denis-Courmont wrote:
> Le mardi 24 juillet 2012 23:31:42 Andy Walls, vous avez écrit :
> > >I would strongly be in favor of this.  One thing that we get far to
> > >little of is feedback from actual userland developers making use of
> > >the V4L and DVB interfaces (aside from the SoC vendors, which is a
> > >completely different target audience than the traditional V4L and DVB
> > >consumers)
> > >
> > >Devin
> > 
> > Ditto.  Input from user application developers  is something that kernel
> > developers need and value greatly.
> > 
> > Note, that I will not be at the workshop of Plumbers this year. :(
> 
> Is the media summit timed with LPC or the kernel summit? If I come, I have
> to leave on Thursday to catch the VideoLAN conference in Paris on the next
> week- end...

It's timed with the kernel summit and it will be on Tuesday. So you should 
have ample time.

And feedback to us from a user perspective would be very useful. As others
have mentioned, we do not see that often enough.

Regards,

	Hans

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Rémi Denis-Courmont]

On Wed, 25 Jul 2012 08:21:05 +0200, Hans Verkuil <hverkuil@xs4all.nl>

wrote:

> On Tue July 24 2012 22:37:35 Rémi Denis-Courmont wrote:

>> Le mardi 24 juillet 2012 23:31:42 Andy Walls, vous avez écrit :

>> > >I would strongly be in favor of this.  One thing that we get far to

>> > >little of is feedback from actual userland developers making use of

>> > >the V4L and DVB interfaces (aside from the SoC vendors, which is a

>> > >completely different target audience than the traditional V4L and

DVB

>> > >consumers)

>> > >

>> > >Devin

>> > 

>> > Ditto.  Input from user application developers  is something that

>> > kernel

>> > developers need and value greatly.

>> > 

>> > Note, that I will not be at the workshop of Plumbers this year. :(

>> 

>> Is the media summit timed with LPC or the kernel summit? If I come, I

>> have

>> to leave on Thursday to catch the VideoLAN conference in Paris on the

>> next

>> week- end...

> 

> It's timed with the kernel summit and it will be on Tuesday. So you

should 

> have ample time.



Oh? Is this firm yet? There's some pressure to book flights early here...



-- 

Rémi Denis-Courmont

Sent from my collocated server

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Hans Verkuil]

On Thu 26 July 2012 11:32:56 Rémi Denis-Courmont wrote:
> On Wed, 25 Jul 2012 08:21:05 +0200, Hans Verkuil <hverkuil@xs4all.nl>
> wrote:
> > On Tue July 24 2012 22:37:35 Rémi Denis-Courmont wrote:
> >> Le mardi 24 juillet 2012 23:31:42 Andy Walls, vous avez écrit :
> >> > >I would strongly be in favor of this.  One thing that we get far to
> >> > >little of is feedback from actual userland developers making use of
> >> > >the V4L and DVB interfaces (aside from the SoC vendors, which is a
> >> > >completely different target audience than the traditional V4L and
> DVB
> >> > >consumers)
> >> > >
> >> > >Devin
> >> > 
> >> > Ditto.  Input from user application developers  is something that
> >> > kernel
> >> > developers need and value greatly.
> >> > 
> >> > Note, that I will not be at the workshop of Plumbers this year. :(
> >> 
> >> Is the media summit timed with LPC or the kernel summit? If I come, I
> >> have
> >> to leave on Thursday to catch the VideoLAN conference in Paris on the
> >> next
> >> week- end...
> > 
> > It's timed with the kernel summit and it will be on Tuesday. So you
> should 
> > have ample time.
> 
> Oh? Is this firm yet? There's some pressure to book flights early here...

Yes, that's firm.

Regards,

	Hans

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Rémi Denis-Courmont]

On Thu, 26 Jul 2012 11:42:15 +0200, Hans Verkuil <hverkuil@xs4all.nl>

wrote:

>> > It's timed with the kernel summit and it will be on Tuesday. So you

>> > should have ample time.

>> 

>> Oh? Is this firm yet? There's some pressure to book flights early

here...

> 

> Yes, that's firm.



Sorry again... Does that mean nothing happens on Sunday and Monday?

Also, when do get confirmed invitations to attend the media summit?



-- 

Rémi Denis-Courmont

Sent from my collocated server

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Hans Verkuil]

On Thu 26 July 2012 14:05:51 Rémi Denis-Courmont wrote:
> On Thu, 26 Jul 2012 11:42:15 +0200, Hans Verkuil <hverkuil@xs4all.nl>
> wrote:
> >> > It's timed with the kernel summit and it will be on Tuesday. So you
> >> > should have ample time.
> >> 
> >> Oh? Is this firm yet? There's some pressure to book flights early
> here...
> > 
> > Yes, that's firm.
> 
> Sorry again... Does that mean nothing happens on Sunday and Monday?

To my knowledge there is nothing planned with respect to V4L/DVB.

Monday is the closed session of the kernel summit. All workshops of the
various subsystems are scheduled on Tuesday.

That doesn't mean nothing happens: I'll be attending the gstreamer
conference on Monday myself.

> Also, when do get confirmed invitations to attend the media summit?

I'll make sure you'll be invited. I'm not even sure you need an official
invite for the workshop. I know that anyone who also attends the LPC can
get an invite for the workshops on Tuesday for free.

Anyway, I'll put your name on the list and make sure that Mauro will pass
that on to the organizers once he's back from vacation.

Regards,

	Hans

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Laurent Pinchart]

Hi Rémi,

On Thursday 26 July 2012 14:05:51 Rémi Denis-Courmont wrote:
> On Thu, 26 Jul 2012 11:42:15 +0200, Hans Verkuil wrote:
> >> > It's timed with the kernel summit and it will be on Tuesday. So you
> >> > 
> >> > should have ample time.
> >> 
> >> Oh? Is this firm yet? There's some pressure to book flights early
> 
> here...
> 
> > Yes, that's firm.
> 
> Sorry again... Does that mean nothing happens on Sunday and Monday?

"Nothing" is a bit too strong of a word :-)

Several developers will already be present on Sunday and Monday, so it could 
be possible to already hold meetings (although getting a room might not be 
easy). You can also attend the GStreamer Conference on Monday if you wish.

> Also, when do get confirmed invitations to attend the media summit?

I expect Mauro to send them when he will be back from holidays.

-- 
Regards,

Laurent Pinchart

Re: Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Antti Palosaari]

On 07/24/2012 11:11 PM, Devin Heitmueller wrote:
> On Tue, Jul 24, 2012 at 4:05 PM, Rémi Denis-Courmont <remi@remlab.net> wrote:
>> If it's of interest to anyone, I could probably present a bunch of issues with
>> V4L2 and DVB from userspace perspective.
>
> Remi,
>
> I would strongly be in favor of this.  One thing that we get far to
> little of is feedback from actual userland developers making use of
> the V4L and DVB interfaces (aside from the SoC vendors, which is a
> completely different target audience than the traditional V4L and DVB
> consumers)

I wonder if it is wise to merge both DVB and V4L2 APIs, add needed DVB 
stuff to V4L2 API and finally remove whole DVB API. V4L2 API seems to be 
much more feature rich, developed more actively and maybe has less 
problems than current DVB API.


regards
Antti

-- 
http://palosaari.fi/

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Michael Krufky]

On Tue, Jul 24, 2012 at 5:50 PM, Antti Palosaari <crope@iki.fi> wrote:
> On 07/24/2012 11:11 PM, Devin Heitmueller wrote:
>>
>> On Tue, Jul 24, 2012 at 4:05 PM, Rémi Denis-Courmont <remi@remlab.net>
>> wrote:
>>>
>>> If it's of interest to anyone, I could probably present a bunch of issues
>>> with
>>> V4L2 and DVB from userspace perspective.
>>
>>
>> Remi,
>>
>>
>> I would strongly be in favor of this.  One thing that we get far to
>> little of is feedback from actual userland developers making use of
>> the V4L and DVB interfaces (aside from the SoC vendors, which is a
>> completely different target audience than the traditional V4L and DVB
>> consumers)
>
>
> I wonder if it is wise to merge both DVB and V4L2 APIs, add needed DVB stuff
> to V4L2 API and finally remove whole DVB API. V4L2 API seems to be much more
> feature rich, developed more actively and maybe has less problems than
> current DVB API.

lets never do that.

Re: Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Devin Heitmueller]

On Tue, Jul 24, 2012 at 5:50 PM, Antti Palosaari <crope@iki.fi> wrote:
> I wonder if it is wise to merge both DVB and V4L2 APIs, add needed DVB stuff
> to V4L2 API and finally remove whole DVB API. V4L2 API seems to be much more
> feature rich, developed more actively and maybe has less problems than
> current DVB API.

This may just be a case of "the grass is always greener on the other
side of the fence".  The V4L2 subsystem has more than it's share of
problems - you just don't see them since you don't work with that code
on a regular basis.

Devin

-- 
Devin J. Heitmueller - Kernel Labs
http://www.kernellabs.com

RE: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Naveen KRISHNAMURTHY]

Hello Mauro,

We would like to participate in the media summit at San Diego. Can you please reserve 2 seats for us. If possible we would like to reserve a session to present how we have used the linuxTV to model our devices and support our use cases. We will also consolidate and pass on a list of questions related to spec ambiguities and hope to get it clarified during the summit!

Can you please confirm back on the feasibility of our attendance?

Regards
Naveen Krishnamurthy
ST Microelectronics.

-----Original Message-----
From: workshop-2011-bounces@linuxtv.org [mailto:workshop-2011-bounces@linuxtv.org] On Behalf Of Mauro Carvalho Chehab
Sent: Tuesday, July 17, 2012 10:31 AM
To: Linux Media Mailing List; workshop-2011@linuxtv.org
Subject: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

As we did in 2012, we're planning to do a media summit again at KS/2012.

The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
before the LinuxCon North America.

In order to do it, I'd like to know who is interested on participate,
and to get proposals about what subjects will be discussed there,
in order to start planning the agenda.

Thanks!
Mauro

-------- Mensagem original --------
Assunto: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit
Data: Fri, 13 Jul 2012 13:37:08 -0400
De: Theodore Ts'o <tytso@mit.edu>
Para: James Bottomley <James.Bottomley@HansenPartnership.com>
CC: ksummit-2012-discuss@lists.linux-foundation.org, linux-kernel <linux-kernel@vger.kernel.org>

On Wed, Jul 11, 2012 at 09:09:15AM +0100, James Bottomley wrote:
> Hi All,
> 
> We have set aside the second day of the kernel summit (Tuesday 28
> August) as mini-summit day.  So far we have only the PCI mini summit on
> this day, so if you can think of other topics, please send them to the
> kernel summit discuss list:
> 
> ksummit-2012-discuss@lists.linux-foundation.org
> 
> Looking at the available rooms, we think we can run about four or five
> mini summits.
> 
> As an added incentive, mini summit organisers get to pick who they
> invite and all the people they pick will get an automatic invitation to
> the third day of the kernel summit (but not the core first day) and the
> evening events.

OK, so far I believe I've heard concrete suggestions from identified
(or fairly well identified :-) stuckees willing to organize
mini-summits for:

* ARM
* Media
* PCI
* memcg

I may have missed some, so if people could send a message to the
discuss list with [MINI-SUMMIT] in the subbject line and the name of
the proposed mini-summit, that would be really helpful.  Please
indicate whether you are volunteering to help organize the proposed
mini-summit, or identify someone you think can be volunteered.  :-)

Things that we will be asking the mini-summit chars to determine, in
addition to who should be given invites for Tuesday and Wednesday is
an estimate of how much time you need, and a list of sub-topics (and
who might lead the sub-topic discussion).  We will be asking you to
create a fairly well-defined schedule, with 30 and 60 minute slots, so
that we can publish a schedule and so that people who might need to
hop between mini-summits, have a chance to do so.  So please start
thinking about how long each of your sub-topics will need to be, and
who might be needed for a particular sub-topic's discussion to be
successful.  There may be a number of developers, with fingers in
multiple subsystem, where scheduling may become a bit of a challenge.

Thanks!!

						- Ted
_______________________________________________
Ksummit-2012-discuss mailing list
Ksummit-2012-discuss@lists.linux-foundation.org
https://lists.linux-foundation.org/mailman/listinfo/ksummit-2012-discuss



_______________________________________________
Workshop-2011 mailing list
Workshop-2011@linuxtv.org
http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Hans Verkuil]

Hi Naveen,

On Wed July 25 2012 02:17:25 Naveen KRISHNAMURTHY wrote:
> Hello Mauro,
> 
> We would like to participate in the media summit at San Diego. Can you
> please reserve 2 seats for us. If possible we would like to reserve a
> session to present how we have used the linuxTV to model our devices and
> support our use cases. We will also consolidate and pass on a list of
> questions related to spec ambiguities and hope to get it clarified during
> the summit!

Please pass that list on to me. I'm doing the section on V4L2 spec ambiguities 
etc., so I'd like to merge all just questions in one session.

Note that my session only deals with V4L2 issues. For DVB issues someone
else would have to coordinate that.

Regards,

	Hans

> 
> Can you please confirm back on the feasibility of our attendance?
> 
> Regards
> Naveen Krishnamurthy
> ST Microelectronics.
> 
> -----Original Message-----
> From: workshop-2011-bounces@linuxtv.org
> [mailto:workshop-2011-bounces@linuxtv.org] On Behalf Of Mauro Carvalho
> Chehab Sent: Tuesday, July 17, 2012 10:31 AM
> To: Linux Media Mailing List; workshop-2011@linuxtv.org
> Subject: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re:
> [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit
> 
> As we did in 2012, we're planning to do a media summit again at KS/2012.
> 
> The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> before the LinuxCon North America.
> 
> In order to do it, I'd like to know who is interested on participate,
> and to get proposals about what subjects will be discussed there,
> in order to start planning the agenda.
> 
> Thanks!
> Mauro
> 
> -------- Mensagem original --------
> Assunto: Re: [Ksummit-2012-discuss] Organising Mini Summits within the
> Kernel Summit Data: Fri, 13 Jul 2012 13:37:08 -0400
> De: Theodore Ts'o <tytso@mit.edu>
> Para: James Bottomley <James.Bottomley@HansenPartnership.com>
> CC: ksummit-2012-discuss@lists.linux-foundation.org, linux-kernel
> <linux-kernel@vger.kernel.org>
> 
> On Wed, Jul 11, 2012 at 09:09:15AM +0100, James Bottomley wrote:
> > Hi All,
> > 
> > We have set aside the second day of the kernel summit (Tuesday 28
> > August) as mini-summit day.  So far we have only the PCI mini summit on
> > this day, so if you can think of other topics, please send them to the
> > kernel summit discuss list:
> > 
> > ksummit-2012-discuss@lists.linux-foundation.org
> > 
> > Looking at the available rooms, we think we can run about four or five
> > mini summits.
> > 
> > As an added incentive, mini summit organisers get to pick who they
> > invite and all the people they pick will get an automatic invitation to
> > the third day of the kernel summit (but not the core first day) and the
> > evening events.
> 
> OK, so far I believe I've heard concrete suggestions from identified
> (or fairly well identified :-) stuckees willing to organize
> mini-summits for:
> 
> * ARM
> * Media
> * PCI
> * memcg
> 
> I may have missed some, so if people could send a message to the
> discuss list with [MINI-SUMMIT] in the subbject line and the name of
> the proposed mini-summit, that would be really helpful.  Please
> indicate whether you are volunteering to help organize the proposed
> mini-summit, or identify someone you think can be volunteered.  :-)
> 
> Things that we will be asking the mini-summit chars to determine, in
> addition to who should be given invites for Tuesday and Wednesday is
> an estimate of how much time you need, and a list of sub-topics (and
> who might lead the sub-topic discussion).  We will be asking you to
> create a fairly well-defined schedule, with 30 and 60 minute slots, so
> that we can publish a schedule and so that people who might need to
> hop between mini-summits, have a chance to do so.  So please start
> thinking about how long each of your sub-topics will need to be, and
> who might be needed for a particular sub-topic's discussion to be
> successful.  There may be a number of developers, with fingers in
> multiple subsystem, where scheduling may become a bit of a challenge.
> 
> Thanks!!
> 
> 						- Ted
> _______________________________________________
> Ksummit-2012-discuss mailing list
> Ksummit-2012-discuss@lists.linux-foundation.org
> https://lists.linux-foundation.org/mailman/listinfo/ksummit-2012-discuss
> 
> 
> 
> _______________________________________________
> Workshop-2011 mailing list
> Workshop-2011@linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011
> 
> _______________________________________________
> Workshop-2011 mailing list
> Workshop-2011@linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011

RE: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Naveen KRISHNAMURTHY]

Sure Hans, we will collate the spec ambiguities and pass it on to you before the meeting for you.

Regards
Naveen

-----Original Message-----
From: Hans Verkuil [mailto:hverkuil@xs4all.nl] 
Sent: Tuesday, July 24, 2012 11:18 PM
To: workshop-2011@linuxtv.org
Cc: Naveen KRISHNAMURTHY; Mauro Carvalho Chehab; Linux Media Mailing List
Subject: Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

Hi Naveen,

On Wed July 25 2012 02:17:25 Naveen KRISHNAMURTHY wrote:
> Hello Mauro,
> 
> We would like to participate in the media summit at San Diego. Can you
> please reserve 2 seats for us. If possible we would like to reserve a
> session to present how we have used the linuxTV to model our devices and
> support our use cases. We will also consolidate and pass on a list of
> questions related to spec ambiguities and hope to get it clarified during
> the summit!

Please pass that list on to me. I'm doing the section on V4L2 spec ambiguities 
etc., so I'd like to merge all just questions in one session.

Note that my session only deals with V4L2 issues. For DVB issues someone
else would have to coordinate that.

Regards,

	Hans

> 
> Can you please confirm back on the feasibility of our attendance?
> 
> Regards
> Naveen Krishnamurthy
> ST Microelectronics.
> 
> -----Original Message-----
> From: workshop-2011-bounces@linuxtv.org
> [mailto:workshop-2011-bounces@linuxtv.org] On Behalf Of Mauro Carvalho
> Chehab Sent: Tuesday, July 17, 2012 10:31 AM
> To: Linux Media Mailing List; workshop-2011@linuxtv.org
> Subject: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re:
> [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit
> 
> As we did in 2012, we're planning to do a media summit again at KS/2012.
> 
> The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just
> before the LinuxCon North America.
> 
> In order to do it, I'd like to know who is interested on participate,
> and to get proposals about what subjects will be discussed there,
> in order to start planning the agenda.
> 
> Thanks!
> Mauro
> 
> -------- Mensagem original --------
> Assunto: Re: [Ksummit-2012-discuss] Organising Mini Summits within the
> Kernel Summit Data: Fri, 13 Jul 2012 13:37:08 -0400
> De: Theodore Ts'o <tytso@mit.edu>
> Para: James Bottomley <James.Bottomley@HansenPartnership.com>
> CC: ksummit-2012-discuss@lists.linux-foundation.org, linux-kernel
> <linux-kernel@vger.kernel.org>
> 
> On Wed, Jul 11, 2012 at 09:09:15AM +0100, James Bottomley wrote:
> > Hi All,
> > 
> > We have set aside the second day of the kernel summit (Tuesday 28
> > August) as mini-summit day.  So far we have only the PCI mini summit on
> > this day, so if you can think of other topics, please send them to the
> > kernel summit discuss list:
> > 
> > ksummit-2012-discuss@lists.linux-foundation.org
> > 
> > Looking at the available rooms, we think we can run about four or five
> > mini summits.
> > 
> > As an added incentive, mini summit organisers get to pick who they
> > invite and all the people they pick will get an automatic invitation to
> > the third day of the kernel summit (but not the core first day) and the
> > evening events.
> 
> OK, so far I believe I've heard concrete suggestions from identified
> (or fairly well identified :-) stuckees willing to organize
> mini-summits for:
> 
> * ARM
> * Media
> * PCI
> * memcg
> 
> I may have missed some, so if people could send a message to the
> discuss list with [MINI-SUMMIT] in the subbject line and the name of
> the proposed mini-summit, that would be really helpful.  Please
> indicate whether you are volunteering to help organize the proposed
> mini-summit, or identify someone you think can be volunteered.  :-)
> 
> Things that we will be asking the mini-summit chars to determine, in
> addition to who should be given invites for Tuesday and Wednesday is
> an estimate of how much time you need, and a list of sub-topics (and
> who might lead the sub-topic discussion).  We will be asking you to
> create a fairly well-defined schedule, with 30 and 60 minute slots, so
> that we can publish a schedule and so that people who might need to
> hop between mini-summits, have a chance to do so.  So please start
> thinking about how long each of your sub-topics will need to be, and
> who might be needed for a particular sub-topic's discussion to be
> successful.  There may be a number of developers, with fingers in
> multiple subsystem, where scheduling may become a bit of a challenge.
> 
> Thanks!!
> 
> 						- Ted
> _______________________________________________
> Ksummit-2012-discuss mailing list
> Ksummit-2012-discuss@lists.linux-foundation.org
> https://lists.linux-foundation.org/mailman/listinfo/ksummit-2012-discuss
> 
> 
> 
> _______________________________________________
> Workshop-2011 mailing list
> Workshop-2011@linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011
> 
> _______________________________________________
> Workshop-2011 mailing list
> Workshop-2011@linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011

Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Mauro Carvalho Chehab]

Em 24-07-2012 21:17, Naveen KRISHNAMURTHY escreveu:
> Hello Mauro,
> 
> We would like to participate in the media summit at San Diego. Can you please reserve 2 seats for us. 

Who are you planning to send to the media summit?

> If possible we would like to reserve a session to present how we have used the linuxTV to model our 
> devices and support our use cases. We will also consolidate and pass on a list of questions related 
> to spec ambiguities and hope to get it clarified during the summit!
> 
> Can you please confirm back on the feasibility of our attendance?

I'll be doing it along this week.

Regards,
Mauro

RE: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

[Naveen KRISHNAMURTHY]

Hi Mauro,

For the summit this time it is be just me who would be attending. The another person who was slated to  join me cannot make it this time.

Sorry for the delay in response.

Regards
Naveen

-----Original Message-----
From: Mauro Carvalho Chehab [mailto:mchehab@redhat.com] 
Sent: Tuesday, July 31, 2012 10:50 AM
To: Naveen KRISHNAMURTHY
Cc: Linux Media Mailing List; workshop-2011@linuxtv.org
Subject: Re: [Workshop-2011] Media summit at the Kernel Summit - was: Fwd: Re: [Ksummit-2012-discuss] Organising Mini Summits within the Kernel Summit

Em 24-07-2012 21:17, Naveen KRISHNAMURTHY escreveu:
> Hello Mauro,
> 
> We would like to participate in the media summit at San Diego. Can you please reserve 2 seats for us. 

Who are you planning to send to the media summit?

> If possible we would like to reserve a session to present how we have used the linuxTV to model our 
> devices and support our use cases. We will also consolidate and pass on a list of questions related 
> to spec ambiguities and hope to get it clarified during the summit!
> 
> Can you please confirm back on the feasibility of our attendance?

I'll be doing it along this week.

Regards,
Mauro

Media summit/KS-2012 proposals

[Mauro Carvalho Chehab]

In order to sum-up the discussions around the media summit,
this is what we've got so far:

Proposals									     	proposed by
=====================================================================================|=========================================================================================
Common device tree bindings for media devices						Sylvester Nawrocki / Guennadi Liakhovetski
ALSA and V4L/Media Controller								Steven Toth / Laurent Pinchart
ARM and needed features for V4L/DVB							Steven Toth
Intel media SDK										Steven Toth
V4L compiance tool									Hans Verkuil
V4L2 API ambiguities									Hans Verkuil
Media Controller library								Laurent Pincart / Sakari Ailus
SoC Vendors feedback – how to help them to go upstream – Android's V4L2 cam library	Laurent Pincart / Guennadi Liakhovetski / Palash Bandyopadhyay / Naveen Krishnamurthy
Synchronization, shared resource and optimizations					Pawel Osciak
V4L2/DVB issues from userspace perspective						Rémi Denis-Courmont

As we'll have only one day for the summit, we may need to remove some
themes, or maybe to get an extra time during LPC for the remaining
discussions.
	
Possible attendents:
===================

Guennadi Liakhovetski
Laurent Pinchart
Mauro Carvalho Chehab
Michael Krufky
Naveen Krishnamurthy
+1 seat from ST (waiting Naveen to define who will be the other seat)
Palash Bandyopadhyay
Pawel Osciak
Rémi Denis-Courmont
Sakari Ailus
Steven Toth
Sylvester Nawrocki

Am I missing something?

Are there other proposals or people intending to participate?

Regards,
Mauro

Re: Media summit/KS-2012 proposals

[Mauro Carvalho Chehab]

Em 31-07-2012 14:58, Mauro Carvalho Chehab escreveu:
> In order to sum-up the discussions around the media summit,
> this is what we've got so far:
> 
> Proposals									     	proposed by
> =====================================================================================|=========================================================================================
> Common device tree bindings for media devices						Sylvester Nawrocki / Guennadi Liakhovetski
> ALSA and V4L/Media Controller								Steven Toth / Laurent Pinchart
> ARM and needed features for V4L/DVB							Steven Toth
> Intel media SDK										Steven Toth
> V4L compiance tool									Hans Verkuil
> V4L2 API ambiguities									Hans Verkuil
> Media Controller library								Laurent Pincart / Sakari Ailus
> SoC Vendors feedback – how to help them to go upstream – Android's V4L2 cam library	Laurent Pincart / Guennadi Liakhovetski / Palash Bandyopadhyay / Naveen Krishnamurthy
> Synchronization, shared resource and optimizations					Pawel Osciak
> V4L2/DVB issues from userspace perspective						Rémi Denis-Courmont
> 
> As we'll have only one day for the summit, we may need to remove some
> themes, or maybe to get an extra time during LPC for the remaining
> discussions.
> 	
> Possible attendents:
> ===================
> 
> Guennadi Liakhovetski
> Laurent Pinchart
> Mauro Carvalho Chehab
> Michael Krufky
> Naveen Krishnamurthy
> +1 seat from ST (waiting Naveen to define who will be the other seat)
> Palash Bandyopadhyay
> Pawel Osciak
> Rémi Denis-Courmont
> Sakari Ailus
> Steven Toth
> Sylvester Nawrocki
> 
> Am I missing something?

Of course I am missing something: for the DT, ALSA and ARM proposals, we'll
need attendants from those subsystems ;)

> 
> Are there other proposals or people intending to participate?
> 
> Regards,
> Mauro
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

RE: [Workshop-2011] Media summit/KS-2012 proposals

[Palash Bandyopadhyay]

Mauro,

  Can you add Sri Deevi to the list too?

Thanks,
Palash

-----Original Message-----
From: workshop-2011-bounces@linuxtv.org [mailto:workshop-2011-bounces@linuxtv.org] On Behalf Of Mauro Carvalho Chehab
Sent: Tuesday, July 31, 2012 10:58 AM
To: workshop-2011@linuxtv.org; Linux Media Mailing List
Subject: [Workshop-2011] Media summit/KS-2012 proposals

In order to sum-up the discussions around the media summit, this is what we've got so far:

Proposals									     	proposed by
=====================================================================================|=========================================================================================
Common device tree bindings for media devices						Sylvester Nawrocki / Guennadi Liakhovetski
ALSA and V4L/Media Controller								Steven Toth / Laurent Pinchart
ARM and needed features for V4L/DVB							Steven Toth
Intel media SDK										Steven Toth
V4L compiance tool									Hans Verkuil
V4L2 API ambiguities									Hans Verkuil
Media Controller library								Laurent Pincart / Sakari Ailus
SoC Vendors feedback - how to help them to go upstream - Android's V4L2 cam library	Laurent Pincart / Guennadi Liakhovetski / Palash Bandyopadhyay / Naveen Krishnamurthy
Synchronization, shared resource and optimizations					Pawel Osciak
V4L2/DVB issues from userspace perspective						Rémi Denis-Courmont

As we'll have only one day for the summit, we may need to remove some themes, or maybe to get an extra time during LPC for the remaining discussions.
	
Possible attendents:
===================

Guennadi Liakhovetski
Laurent Pinchart
Mauro Carvalho Chehab
Michael Krufky
Naveen Krishnamurthy
+1 seat from ST (waiting Naveen to define who will be the other seat)
Palash Bandyopadhyay
Pawel Osciak
Rémi Denis-Courmont
Sakari Ailus
Steven Toth
Sylvester Nawrocki

Am I missing something?

Are there other proposals or people intending to participate?

Regards,
Mauro


_______________________________________________
Workshop-2011 mailing list
Workshop-2011@linuxtv.org
http://www.linuxtv.org/cgi-bin/mailman/listinfo/workshop-2011

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RE: Media summit/KS-2012 proposals

[Sri Deevi]

Hi 

I would like to participate in the workshop. 
Can you please add me to the list ? 

Thanks
Sri

-------- Mensagem original --------
Assunto: Media summit/KS-2012 proposals
Data: Tue, 31 Jul 2012 14:58:23 -0300
De: Mauro Carvalho Chehab <mchehab@redhat.com>
Para: workshop-2011@linuxtv.org,  Linux Media Mailing List <linux-media@vger.kernel.org>

In order to sum-up the discussions around the media summit, this is what we've got so far:

Proposals									     	proposed by
=====================================================================================|=========================================================================================
Common device tree bindings for media devices						Sylvester Nawrocki / Guennadi Liakhovetski
ALSA and V4L/Media Controller								Steven Toth / Laurent Pinchart
ARM and needed features for V4L/DVB							Steven Toth
Intel media SDK										Steven Toth
V4L compiance tool									Hans Verkuil
V4L2 API ambiguities									Hans Verkuil
Media Controller library								Laurent Pincart / Sakari Ailus
SoC Vendors feedback - how to help them to go upstream - Android's V4L2 cam library	Laurent Pincart / Guennadi Liakhovetski / Palash Bandyopadhyay / Naveen Krishnamurthy
Synchronization, shared resource and optimizations					Pawel Osciak
V4L2/DVB issues from userspace perspective						Rémi Denis-Courmont

As we'll have only one day for the summit, we may need to remove some themes, or maybe to get an extra time during LPC for the remaining discussions.
	
Possible attendents:
===================

Guennadi Liakhovetski
Laurent Pinchart
Mauro Carvalho Chehab
Michael Krufky
Naveen Krishnamurthy
+1 seat from ST (waiting Naveen to define who will be the other seat)
Palash Bandyopadhyay
Pawel Osciak
Rémi Denis-Courmont
Sakari Ailus
Steven Toth
Sylvester Nawrocki

Am I missing something?

Are there other proposals or people intending to participate?

Regards,
Mauro




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Re: [Workshop-2011] Media summit/KS-2012 proposals

[Laurent Pinchart]

Hi Mauro,

On Tuesday 31 July 2012 14:58:23 Mauro Carvalho Chehab wrote:
> In order to sum-up the discussions around the media summit,
> this is what we've got so far:
> 
> Proposals									     	proposed by
> ============================================================================
> =========|==================================================================
> ======================= Common device tree bindings for media
> devices						Sylvester Nawrocki / Guennadi Liakhovetski ALSA 
and V4L/Media
> Controller								Steven Toth / Laurent Pinchart ARM 
and needed features
> for V4L/DVB							Steven Toth
> Intel media SDK										Steven Toth
> V4L compiance tool									Hans Verkuil
> V4L2 API ambiguities									Hans Verkuil
> Media Controller library								Laurent Pincart / 
Sakari Ailus
> SoC Vendors feedback – how to help them to go upstream – Android's V4L2 cam
> library	Laurent Pincart / Guennadi Liakhovetski / Palash Bandyopadhyay /
> Naveen Krishnamurthy Synchronization, shared resource and
> optimizations					Pawel Osciak V4L2/DVB issues from userspace
> perspective						Rémi Denis-Courmont
> 
> As we'll have only one day for the summit, we may need to remove some
> themes, or maybe to get an extra time during LPC for the remaining
> discussions.
> 
> Possible attendents:
> ===================
> 
> Guennadi Liakhovetski
> Laurent Pinchart
> Mauro Carvalho Chehab
> Michael Krufky
> Naveen Krishnamurthy
> +1 seat from ST (waiting Naveen to define who will be the other seat)
> Palash Bandyopadhyay
> Pawel Osciak
> Rémi Denis-Courmont
> Sakari Ailus
> Steven Toth
> Sylvester Nawrocki
> 
> Am I missing something?
> 
> Are there other proposals or people intending to participate?

I think Hans Verkuil is.

-- 
Regards,

Laurent Pinchart

Re: [Workshop-2011] Media summit/KS-2012 proposals

[Hans Verkuil]

On Tue 31 July 2012 19:58:23 Mauro Carvalho Chehab wrote:
> In order to sum-up the discussions around the media summit,
> this is what we've got so far:
> 
> Proposals									     	proposed by
> =====================================================================================|=========================================================================================
> Common device tree bindings for media devices						Sylvester Nawrocki / Guennadi Liakhovetski
> ALSA and V4L/Media Controller								Steven Toth / Laurent Pinchart
> ARM and needed features for V4L/DVB							Steven Toth
> Intel media SDK										Steven Toth
> V4L compiance tool									Hans Verkuil
> V4L2 API ambiguities									Hans Verkuil
> Media Controller library								Laurent Pincart / Sakari Ailus
> SoC Vendors feedback – how to help them to go upstream – Android's V4L2 cam library	Laurent Pincart / Guennadi Liakhovetski / Palash Bandyopadhyay / Naveen Krishnamurthy
> Synchronization, shared resource and optimizations					Pawel Osciak
> V4L2/DVB issues from userspace perspective						Rémi Denis-Courmont
> 
> As we'll have only one day for the summit, we may need to remove some
> themes, or maybe to get an extra time during LPC for the remaining
> discussions.
> 	
> Possible attendents:
> ===================
> 
> Guennadi Liakhovetski
> Laurent Pinchart
> Mauro Carvalho Chehab
> Michael Krufky
> Naveen Krishnamurthy
> +1 seat from ST (waiting Naveen to define who will be the other seat)
> Palash Bandyopadhyay
> Pawel Osciak
> Rémi Denis-Courmont
> Sakari Ailus
> Steven Toth
> Sylvester Nawrocki
> 
> Am I missing something?
> 
> Are there other proposals or people intending to participate?

Yes: I would like to discuss how to add support for HDMI CEC to the kernel.
In particularly I need some feedback from the GPU driver developers on what
their ideas are, since CEC is something that touches both V4L2 and GPU.

I'm not sure what the best place is to do this, it's a fairly specialized
topic. It might be better suited to just get a few interested devs together
in the evening or during some other suitable time and just see if we can
hammer out some scheme. I'll have a presentation on the topic ready.

Rob, what are your ideas on this?

Who else might be interested in this?

Regards,

	Hans

Re: [Workshop-2011] Media summit/KS-2012 proposals

[Jun Nie]

2012/8/1 Hans Verkuil <hverkuil@xs4all.nl>:
> On Tue 31 July 2012 19:58:23 Mauro Carvalho Chehab wrote:
>> In order to sum-up the discussions around the media summit,
>> this is what we've got so far:
>>
>> Proposals                                                                             proposed by
>> =====================================================================================|=========================================================================================
>> Common device tree bindings for media devices                                         Sylvester Nawrocki / Guennadi Liakhovetski
>> ALSA and V4L/Media Controller                                                         Steven Toth / Laurent Pinchart
>> ARM and needed features for V4L/DVB                                                   Steven Toth
>> Intel media SDK                                                                               Steven Toth
>> V4L compiance tool                                                                    Hans Verkuil
>> V4L2 API ambiguities                                                                  Hans Verkuil
>> Media Controller library                                                              Laurent Pincart / Sakari Ailus
>> SoC Vendors feedback – how to help them to go upstream – Android's V4L2 cam library   Laurent Pincart / Guennadi Liakhovetski / Palash Bandyopadhyay / Naveen Krishnamurthy
>> Synchronization, shared resource and optimizations                                    Pawel Osciak
>> V4L2/DVB issues from userspace perspective                                            Rémi Denis-Courmont
>>
>> As we'll have only one day for the summit, we may need to remove some
>> themes, or maybe to get an extra time during LPC for the remaining
>> discussions.
>>
>> Possible attendents:
>> ===================
>>
>> Guennadi Liakhovetski
>> Laurent Pinchart
>> Mauro Carvalho Chehab
>> Michael Krufky
>> Naveen Krishnamurthy
>> +1 seat from ST (waiting Naveen to define who will be the other seat)
>> Palash Bandyopadhyay
>> Pawel Osciak
>> Rémi Denis-Courmont
>> Sakari Ailus
>> Steven Toth
>> Sylvester Nawrocki
>>
>> Am I missing something?
>>
>> Are there other proposals or people intending to participate?
>
> Yes: I would like to discuss how to add support for HDMI CEC to the kernel.
> In particularly I need some feedback from the GPU driver developers on what
> their ideas are, since CEC is something that touches both V4L2 and GPU.
>
I am not familiar with CEC implementation in GPU. But CEC should be
independent in functionality with audio/video though it is A/V
related. I prefer to support only CEC frame TX/RX in kernel. CEC
include different category features that need parsing and may need
application interaction. Venders may also configure some features as
not supported.  If kernel support more than TX/RX, policy may be
separated to user space part and kernel space part. The kernel
interface also becomes complex, maybe ambiguous too. An user space
library is more suitable for this task to interact with OS/media
player/audio control/etc.

> I'm not sure what the best place is to do this, it's a fairly specialized
> topic. It might be better suited to just get a few interested devs together
> in the evening or during some other suitable time and just see if we can
> hammer out some scheme. I'll have a presentation on the topic ready.
>
> Rob, what are your ideas on this?
>
> Who else might be interested in this?
>
> Regards,
>
>         Hans
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: [Workshop-2011] Media summit/KS-2012 proposals

[Hans Verkuil]

On Fri August 3 2012 07:37:13 Jun Nie wrote:
> 2012/8/1 Hans Verkuil <hverkuil@xs4all.nl>:
> > On Tue 31 July 2012 19:58:23 Mauro Carvalho Chehab wrote:
> >> In order to sum-up the discussions around the media summit,
> >> this is what we've got so far:
> >>
> >> Proposals                                                                             proposed by
> >> =====================================================================================|=========================================================================================
> >> Common device tree bindings for media devices                                         Sylvester Nawrocki / Guennadi Liakhovetski
> >> ALSA and V4L/Media Controller                                                         Steven Toth / Laurent Pinchart
> >> ARM and needed features for V4L/DVB                                                   Steven Toth
> >> Intel media SDK                                                                               Steven Toth
> >> V4L compiance tool                                                                    Hans Verkuil
> >> V4L2 API ambiguities                                                                  Hans Verkuil
> >> Media Controller library                                                              Laurent Pincart / Sakari Ailus
> >> SoC Vendors feedback – how to help them to go upstream – Android's V4L2 cam library   Laurent Pincart / Guennadi Liakhovetski / Palash Bandyopadhyay / Naveen Krishnamurthy
> >> Synchronization, shared resource and optimizations                                    Pawel Osciak
> >> V4L2/DVB issues from userspace perspective                                            Rémi Denis-Courmont
> >>
> >> As we'll have only one day for the summit, we may need to remove some
> >> themes, or maybe to get an extra time during LPC for the remaining
> >> discussions.
> >>
> >> Possible attendents:
> >> ===================
> >>
> >> Guennadi Liakhovetski
> >> Laurent Pinchart
> >> Mauro Carvalho Chehab
> >> Michael Krufky
> >> Naveen Krishnamurthy
> >> +1 seat from ST (waiting Naveen to define who will be the other seat)
> >> Palash Bandyopadhyay
> >> Pawel Osciak
> >> Rémi Denis-Courmont
> >> Sakari Ailus
> >> Steven Toth
> >> Sylvester Nawrocki
> >>
> >> Am I missing something?
> >>
> >> Are there other proposals or people intending to participate?
> >
> > Yes: I would like to discuss how to add support for HDMI CEC to the kernel.
> > In particularly I need some feedback from the GPU driver developers on what
> > their ideas are, since CEC is something that touches both V4L2 and GPU.
> >
> I am not familiar with CEC implementation in GPU.

As far as I am aware there isn't any.

> But CEC should be
> independent in functionality with audio/video though it is A/V
> related. I prefer to support only CEC frame TX/RX in kernel. CEC
> include different category features that need parsing and may need
> application interaction. Venders may also configure some features as
> not supported.  If kernel support more than TX/RX, policy may be
> separated to user space part and kernel space part. The kernel
> interface also becomes complex, maybe ambiguous too. An user space
> library is more suitable for this task to interact with OS/media
> player/audio control/etc.

I wish that were possible. Our current implementation internally is as you
proposed, but we recently discovered that for HDMI 1.4a this won't fly.

There the CEC channel is also used for control of the ethernet and audio
return channel, and even for hotplug detect in some cases.

That's something that has to be handled entirely in kernelspace. So some
parts of the CEC protocol have to be internally processed, other parts
have to be processed in userspace.

This really complicates things and it makes it even more important that
the subsystems that need CEC work together on this.

Regards,

	Hans

Re: [Workshop-2011] Media summit/KS-2012 proposals

[Jun Nie]

2012/8/3 Hans Verkuil <hverkuil@xs4all.nl>:
> On Fri August 3 2012 07:37:13 Jun Nie wrote:
>> 2012/8/1 Hans Verkuil <hverkuil@xs4all.nl>:
>> > On Tue 31 July 2012 19:58:23 Mauro Carvalho Chehab wrote:
>> >> In order to sum-up the discussions around the media summit,
>> >> this is what we've got so far:
>> >>
>> >> Proposals                                                                             proposed by
>> >> =====================================================================================|=========================================================================================
>> >> Common device tree bindings for media devices                                         Sylvester Nawrocki / Guennadi Liakhovetski
>> >> ALSA and V4L/Media Controller                                                         Steven Toth / Laurent Pinchart
>> >> ARM and needed features for V4L/DVB                                                   Steven Toth
>> >> Intel media SDK                                                                               Steven Toth
>> >> V4L compiance tool                                                                    Hans Verkuil
>> >> V4L2 API ambiguities                                                                  Hans Verkuil
>> >> Media Controller library                                                              Laurent Pincart / Sakari Ailus
>> >> SoC Vendors feedback – how to help them to go upstream – Android's V4L2 cam library   Laurent Pincart / Guennadi Liakhovetski / Palash Bandyopadhyay / Naveen Krishnamurthy
>> >> Synchronization, shared resource and optimizations                                    Pawel Osciak
>> >> V4L2/DVB issues from userspace perspective                                            Rémi Denis-Courmont
>> >>
>> >> As we'll have only one day for the summit, we may need to remove some
>> >> themes, or maybe to get an extra time during LPC for the remaining
>> >> discussions.
>> >>
>> >> Possible attendents:
>> >> ===================
>> >>
>> >> Guennadi Liakhovetski
>> >> Laurent Pinchart
>> >> Mauro Carvalho Chehab
>> >> Michael Krufky
>> >> Naveen Krishnamurthy
>> >> +1 seat from ST (waiting Naveen to define who will be the other seat)
>> >> Palash Bandyopadhyay
>> >> Pawel Osciak
>> >> Rémi Denis-Courmont
>> >> Sakari Ailus
>> >> Steven Toth
>> >> Sylvester Nawrocki
>> >>
>> >> Am I missing something?
>> >>
>> >> Are there other proposals or people intending to participate?
>> >
>> > Yes: I would like to discuss how to add support for HDMI CEC to the kernel.
>> > In particularly I need some feedback from the GPU driver developers on what
>> > their ideas are, since CEC is something that touches both V4L2 and GPU.
>> >
>> I am not familiar with CEC implementation in GPU.
>
> As far as I am aware there isn't any.
>
>> But CEC should be
>> independent in functionality with audio/video though it is A/V
>> related. I prefer to support only CEC frame TX/RX in kernel. CEC
>> include different category features that need parsing and may need
>> application interaction. Venders may also configure some features as
>> not supported.  If kernel support more than TX/RX, policy may be
>> separated to user space part and kernel space part. The kernel
>> interface also becomes complex, maybe ambiguous too. An user space
>> library is more suitable for this task to interact with OS/media
>> player/audio control/etc.
>
> I wish that were possible. Our current implementation internally is as you
> proposed, but we recently discovered that for HDMI 1.4a this won't fly.
>
> There the CEC channel is also used for control of the ethernet and audio
> return channel, and even for hotplug detect in some cases.
>
> That's something that has to be handled entirely in kernelspace. So some
> parts of the CEC protocol have to be internally processed, other parts
> have to be processed in userspace.
>
Thanks for your reminder. I was not aware of HEAC/ARC dependence on
CEC for our product does not include these features. Maybe we can
parse CDC CEC message in kernel and leave others to user space. But it
is also an ugly propose.
BTW: Do you see any scenario that EDID is changed dynamically? I do
not know why to add hot-plug to CEC control while no physical HPD
changes.

> This really complicates things and it makes it even more important that
> the subsystems that need CEC work together on this.
>
> Regards,
>
>         Hans

Re: [Workshop-2011] Media summit/KS-2012 proposals

[Hans Verkuil]

On Mon August 6 2012 15:22:38 Jun Nie wrote:
> 2012/8/3 Hans Verkuil <hverkuil@xs4all.nl>:
> > On Fri August 3 2012 07:37:13 Jun Nie wrote:
> >> 2012/8/1 Hans Verkuil <hverkuil@xs4all.nl>:
> >> > On Tue 31 July 2012 19:58:23 Mauro Carvalho Chehab wrote:
> >> >> In order to sum-up the discussions around the media summit,
> >> >> this is what we've got so far:
> >> >>
> >> >> Proposals                                                                             proposed by
> >> >> =====================================================================================|=========================================================================================
> >> >> Common device tree bindings for media devices                                         Sylvester Nawrocki / Guennadi Liakhovetski
> >> >> ALSA and V4L/Media Controller                                                         Steven Toth / Laurent Pinchart
> >> >> ARM and needed features for V4L/DVB                                                   Steven Toth
> >> >> Intel media SDK                                                                               Steven Toth
> >> >> V4L compiance tool                                                                    Hans Verkuil
> >> >> V4L2 API ambiguities                                                                  Hans Verkuil
> >> >> Media Controller library                                                              Laurent Pincart / Sakari Ailus
> >> >> SoC Vendors feedback – how to help them to go upstream – Android's V4L2 cam library   Laurent Pincart / Guennadi Liakhovetski / Palash Bandyopadhyay / Naveen Krishnamurthy
> >> >> Synchronization, shared resource and optimizations                                    Pawel Osciak
> >> >> V4L2/DVB issues from userspace perspective                                            Rémi Denis-Courmont
> >> >>
> >> >> As we'll have only one day for the summit, we may need to remove some
> >> >> themes, or maybe to get an extra time during LPC for the remaining
> >> >> discussions.
> >> >>
> >> >> Possible attendents:
> >> >> ===================
> >> >>
> >> >> Guennadi Liakhovetski
> >> >> Laurent Pinchart
> >> >> Mauro Carvalho Chehab
> >> >> Michael Krufky
> >> >> Naveen Krishnamurthy
> >> >> +1 seat from ST (waiting Naveen to define who will be the other seat)
> >> >> Palash Bandyopadhyay
> >> >> Pawel Osciak
> >> >> Rémi Denis-Courmont
> >> >> Sakari Ailus
> >> >> Steven Toth
> >> >> Sylvester Nawrocki
> >> >>
> >> >> Am I missing something?
> >> >>
> >> >> Are there other proposals or people intending to participate?
> >> >
> >> > Yes: I would like to discuss how to add support for HDMI CEC to the kernel.
> >> > In particularly I need some feedback from the GPU driver developers on what
> >> > their ideas are, since CEC is something that touches both V4L2 and GPU.
> >> >
> >> I am not familiar with CEC implementation in GPU.
> >
> > As far as I am aware there isn't any.
> >
> >> But CEC should be
> >> independent in functionality with audio/video though it is A/V
> >> related. I prefer to support only CEC frame TX/RX in kernel. CEC
> >> include different category features that need parsing and may need
> >> application interaction. Venders may also configure some features as
> >> not supported.  If kernel support more than TX/RX, policy may be
> >> separated to user space part and kernel space part. The kernel
> >> interface also becomes complex, maybe ambiguous too. An user space
> >> library is more suitable for this task to interact with OS/media
> >> player/audio control/etc.
> >
> > I wish that were possible. Our current implementation internally is as you
> > proposed, but we recently discovered that for HDMI 1.4a this won't fly.
> >
> > There the CEC channel is also used for control of the ethernet and audio
> > return channel, and even for hotplug detect in some cases.
> >
> > That's something that has to be handled entirely in kernelspace. So some
> > parts of the CEC protocol have to be internally processed, other parts
> > have to be processed in userspace.
> >
> Thanks for your reminder. I was not aware of HEAC/ARC dependence on
> CEC for our product does not include these features. Maybe we can
> parse CDC CEC message in kernel and leave others to user space. But it
> is also an ugly propose.
> BTW: Do you see any scenario that EDID is changed dynamically? I do
> not know why to add hot-plug to CEC control while no physical HPD
> changes.

Switching between an EDID for analog or digital input when using a DVI-I cable
is the most common use-case that I know of. But this does not apply as such to
an HDMI connector since that's digital only.

Another might be that a simple EDID is setup when the device boots, and once
it is booted and all the features of the device are known a more advanced EDID
might be written.

I'm sure that there are more creative uses as well...

Regards,

	Hans

Re: [Workshop-2011] Media summit/KS-2012 proposals

[Jun Nie]

Is there any summary for this summit or presentation material? I am
looking forward for some idea on CEC. It is really complex in
functionality.
Maybe other guys is expecting simiar fruite from summit too.

B.R.
Jun

Re: [Workshop-2011] Media summit/KS-2012 proposals

[Hans Verkuil]

On Wed 5 September 2012 10:04:41 Jun Nie wrote:
> Is there any summary for this summit or presentation material? I am
> looking forward for some idea on CEC. It is really complex in
> functionality.
> Maybe other guys is expecting simiar fruite from summit too.

Yes, there will be a summit report. It's not quite finished yet, I think.

With respect to CEC we had some useful discussions. It will have to be a
new class of device (/dev/cecX), so the userspace API will be separate from
drm or v4l.

And the kernel will have to take care of the core CEC protocol w.r.t. control
and discovery due to the HDMI 1.4a requirements.

I plan on starting work on this within 1-2 weeks.

My CEC presentation can be found here:

http://hverkuil.home.xs4all.nl/presentations/v4l2-workshop-cec.odp

Regards,

	Hans

Re: [Workshop-2011] Media summit/KS-2012 proposals

[Jun Nie]

2012/9/5 Hans Verkuil <hverkuil@xs4all.nl>:
> On Wed 5 September 2012 10:04:41 Jun Nie wrote:
>> Is there any summary for this summit or presentation material? I am
>> looking forward for some idea on CEC. It is really complex in
>> functionality.
>> Maybe other guys is expecting simiar fruite from summit too.
>
> Yes, there will be a summit report. It's not quite finished yet, I think.
>
> With respect to CEC we had some useful discussions. It will have to be a
> new class of device (/dev/cecX), so the userspace API will be separate from
> drm or v4l.
>
> And the kernel will have to take care of the core CEC protocol w.r.t. control
> and discovery due to the HDMI 1.4a requirements.
>
> I plan on starting work on this within 1-2 weeks.
>
> My CEC presentation can be found here:
>
> http://hverkuil.home.xs4all.nl/presentations/v4l2-workshop-cec.odp
>
> Regards,
>
>         Hans

Thanks for quick response! It's good to know that CEC is independent
with DRM/V4L for my HDMI implementation is FB/lcd-device based. CEC is
also deserved to have independent management in both hardware signal
and functionality. Someone also expressed similar thoughts before.
Will remote control protocal parsing are done in userspace reference
library? Or not decided yet?

B.R.
Jun

Re: [Workshop-2011] Media summit/KS-2012 proposals

[Hans Verkuil]

On Thu September 6 2012 06:09:44 Jun Nie wrote:
> 2012/9/5 Hans Verkuil <hverkuil@xs4all.nl>:
> > On Wed 5 September 2012 10:04:41 Jun Nie wrote:
> >> Is there any summary for this summit or presentation material? I am
> >> looking forward for some idea on CEC. It is really complex in
> >> functionality.
> >> Maybe other guys is expecting simiar fruite from summit too.
> >
> > Yes, there will be a summit report. It's not quite finished yet, I think.
> >
> > With respect to CEC we had some useful discussions. It will have to be a
> > new class of device (/dev/cecX), so the userspace API will be separate from
> > drm or v4l.
> >
> > And the kernel will have to take care of the core CEC protocol w.r.t. control
> > and discovery due to the HDMI 1.4a requirements.
> >
> > I plan on starting work on this within 1-2 weeks.
> >
> > My CEC presentation can be found here:
> >
> > http://hverkuil.home.xs4all.nl/presentations/v4l2-workshop-cec.odp
> >
> > Regards,
> >
> >         Hans
> 
> Thanks for quick response! It's good to know that CEC is independent
> with DRM/V4L for my HDMI implementation is FB/lcd-device based. CEC is
> also deserved to have independent management in both hardware signal
> and functionality. Someone also expressed similar thoughts before.
> Will remote control protocal parsing are done in userspace reference
> library? Or not decided yet?

Are you referring to the remote control pass-through functionality?
I don't know yet whether that will go through a userspace library or
through the RC kernel subsystem, or possibly both.

Most of the other non-system messages will go to a userspace library.

But I haven't started coding yet, so it is very early days :-)

The main thing is that at least I now have a high-level design that
I can start to work with.

Regards,

	Hans

Re: [Workshop-2011] Media summit/KS-2012 proposals

[Jun Nie]

2012/9/6 Hans Verkuil <hverkuil@xs4all.nl>:
> On Thu September 6 2012 06:09:44 Jun Nie wrote:
>> 2012/9/5 Hans Verkuil <hverkuil@xs4all.nl>:
>> > On Wed 5 September 2012 10:04:41 Jun Nie wrote:
>> >> Is there any summary for this summit or presentation material? I am
>> >> looking forward for some idea on CEC. It is really complex in
>> >> functionality.
>> >> Maybe other guys is expecting simiar fruite from summit too.
>> >
>> > Yes, there will be a summit report. It's not quite finished yet, I think.
>> >
>> > With respect to CEC we had some useful discussions. It will have to be a
>> > new class of device (/dev/cecX), so the userspace API will be separate from
>> > drm or v4l.
>> >
>> > And the kernel will have to take care of the core CEC protocol w.r.t. control
>> > and discovery due to the HDMI 1.4a requirements.
>> >
>> > I plan on starting work on this within 1-2 weeks.
>> >
>> > My CEC presentation can be found here:
>> >
>> > http://hverkuil.home.xs4all.nl/presentations/v4l2-workshop-cec.odp
>> >
>> > Regards,
>> >
>> >         Hans
>>
>> Thanks for quick response! It's good to know that CEC is independent
>> with DRM/V4L for my HDMI implementation is FB/lcd-device based. CEC is
>> also deserved to have independent management in both hardware signal
>> and functionality. Someone also expressed similar thoughts before.
>> Will remote control protocal parsing are done in userspace reference
>> library? Or not decided yet?
>
> Are you referring to the remote control pass-through functionality?
> I don't know yet whether that will go through a userspace library or
> through the RC kernel subsystem, or possibly both.
I mean all the feature that can involved in handhold remote control,
one touch play, standby, on screen display, etc, such as
play/pause/poweroff. I want to mention all non CDC features that can
be implemented in user space. They are hard to be covered by any
sub-system and user space library is more proper. Just like your
metaphor, kitchen sink for CEC. I like your words.
>
> Most of the other non-system messages will go to a userspace library.
Does routing/address is included in system message here?
>
> But I haven't started coding yet, so it is very early days :-)
>
> The main thing is that at least I now have a high-level design that
> I can start to work with.
>
> Regards,
>
>         Hans

Re: [Workshop-2011] Media summit/KS-2012 proposals

[Hans Verkuil]

On Thu 6 September 2012 12:29:17 Jun Nie wrote:
> 2012/9/6 Hans Verkuil <hverkuil@xs4all.nl>:
> > On Thu September 6 2012 06:09:44 Jun Nie wrote:
> >> 2012/9/5 Hans Verkuil <hverkuil@xs4all.nl>:
> >> > On Wed 5 September 2012 10:04:41 Jun Nie wrote:
> >> >> Is there any summary for this summit or presentation material? I am
> >> >> looking forward for some idea on CEC. It is really complex in
> >> >> functionality.
> >> >> Maybe other guys is expecting simiar fruite from summit too.
> >> >
> >> > Yes, there will be a summit report. It's not quite finished yet, I think.
> >> >
> >> > With respect to CEC we had some useful discussions. It will have to be a
> >> > new class of device (/dev/cecX), so the userspace API will be separate from
> >> > drm or v4l.
> >> >
> >> > And the kernel will have to take care of the core CEC protocol w.r.t. control
> >> > and discovery due to the HDMI 1.4a requirements.
> >> >
> >> > I plan on starting work on this within 1-2 weeks.
> >> >
> >> > My CEC presentation can be found here:
> >> >
> >> > http://hverkuil.home.xs4all.nl/presentations/v4l2-workshop-cec.odp
> >> >
> >> > Regards,
> >> >
> >> >         Hans
> >>
> >> Thanks for quick response! It's good to know that CEC is independent
> >> with DRM/V4L for my HDMI implementation is FB/lcd-device based. CEC is
> >> also deserved to have independent management in both hardware signal
> >> and functionality. Someone also expressed similar thoughts before.
> >> Will remote control protocal parsing are done in userspace reference
> >> library? Or not decided yet?
> >
> > Are you referring to the remote control pass-through functionality?
> > I don't know yet whether that will go through a userspace library or
> > through the RC kernel subsystem, or possibly both.

> I mean all the feature that can involved in handhold remote control,
> one touch play, standby, on screen display, etc, such as
> play/pause/poweroff. I want to mention all non CDC features that can
> be implemented in user space. They are hard to be covered by any
> sub-system and user space library is more proper. Just like your
> metaphor, kitchen sink for CEC. I like your words.

Yes, that will all be userspace.

My plan is to have the CEC adapter driver handle the core CEC protocol,
allow other drivers to intercept messages that are relevant for them and
send messages themselves, and anything that remains will be available to
userspace for which a new library will be created.

Now, don't ask me about any of the details, since I don't have them yet :-)
My plan is to start working on this next week or the week after.

Are you willing to test early versions of this work? Can you test HDMI 1.4a
features as well? Testing this might well be one of the harder things to do.

Regards,

	Hans

Re: [Workshop-2011] Media summit/KS-2012 proposals

[Jun Nie]

2012/9/6 Hans Verkuil <hverkuil@xs4all.nl>:
> On Thu 6 September 2012 12:29:17 Jun Nie wrote:
>> 2012/9/6 Hans Verkuil <hverkuil@xs4all.nl>:
>> > On Thu September 6 2012 06:09:44 Jun Nie wrote:
>> >> 2012/9/5 Hans Verkuil <hverkuil@xs4all.nl>:
>> >> > On Wed 5 September 2012 10:04:41 Jun Nie wrote:
>> >> >> Is there any summary for this summit or presentation material? I am
>> >> >> looking forward for some idea on CEC. It is really complex in
>> >> >> functionality.
>> >> >> Maybe other guys is expecting simiar fruite from summit too.
>> >> >
>> >> > Yes, there will be a summit report. It's not quite finished yet, I think.
>> >> >
>> >> > With respect to CEC we had some useful discussions. It will have to be a
>> >> > new class of device (/dev/cecX), so the userspace API will be separate from
>> >> > drm or v4l.
>> >> >
>> >> > And the kernel will have to take care of the core CEC protocol w.r.t. control
>> >> > and discovery due to the HDMI 1.4a requirements.
>> >> >
>> >> > I plan on starting work on this within 1-2 weeks.
>> >> >
>> >> > My CEC presentation can be found here:
>> >> >
>> >> > http://hverkuil.home.xs4all.nl/presentations/v4l2-workshop-cec.odp
>> >> >
>> >> > Regards,
>> >> >
>> >> >         Hans
>> >>
>> >> Thanks for quick response! It's good to know that CEC is independent
>> >> with DRM/V4L for my HDMI implementation is FB/lcd-device based. CEC is
>> >> also deserved to have independent management in both hardware signal
>> >> and functionality. Someone also expressed similar thoughts before.
>> >> Will remote control protocal parsing are done in userspace reference
>> >> library? Or not decided yet?
>> >
>> > Are you referring to the remote control pass-through functionality?
>> > I don't know yet whether that will go through a userspace library or
>> > through the RC kernel subsystem, or possibly both.
>
>> I mean all the feature that can involved in handhold remote control,
>> one touch play, standby, on screen display, etc, such as
>> play/pause/poweroff. I want to mention all non CDC features that can
>> be implemented in user space. They are hard to be covered by any
>> sub-system and user space library is more proper. Just like your
>> metaphor, kitchen sink for CEC. I like your words.
>
> Yes, that will all be userspace.
>
> My plan is to have the CEC adapter driver handle the core CEC protocol,
> allow other drivers to intercept messages that are relevant for them and
> send messages themselves, and anything that remains will be available to
> userspace for which a new library will be created.
>
> Now, don't ask me about any of the details, since I don't have them yet :-)
> My plan is to start working on this next week or the week after.
>
> Are you willing to test early versions of this work? Can you test HDMI 1.4a
> features as well? Testing this might well be one of the harder things to do.
>
I am willing to test or contribute to the library. But my hardware
does not include HEAC. So my test scope limites to the features that
can be implemented in user space.

> Regards,
>
>         Hans

Re: [Workshop-2011] Media summit/KS-2012 proposals

[Laurent Pinchart]

Hi Hans,

On Wednesday 05 September 2012 10:28:30 Hans Verkuil wrote:
> On Wed 5 September 2012 10:04:41 Jun Nie wrote:
> > Is there any summary for this summit or presentation material? I am
> > looking forward for some idea on CEC. It is really complex in
> > functionality.
> > Maybe other guys is expecting simiar fruite from summit too.
> 
> Yes, there will be a summit report. It's not quite finished yet, I think.
> 
> With respect to CEC we had some useful discussions. It will have to be a
> new class of device (/dev/cecX), so the userspace API will be separate from
> drm or v4l.

This is a repeat of a comment from the KS discussion: what about using the 
socket API instead of a device node ?

> And the kernel will have to take care of the core CEC protocol w.r.t.
> control and discovery due to the HDMI 1.4a requirements.
> 
> I plan on starting work on this within 1-2 weeks.
> 
> My CEC presentation can be found here:
> 
> http://hverkuil.home.xs4all.nl/presentations/v4l2-workshop-cec.odp

-- 
Regards,

Laurent Pinchart

Re: [Workshop-2011] Media summit/KS-2012 proposals

[Hans Verkuil]

On Thu 13 September 2012 03:01:34 Laurent Pinchart wrote:
> Hi Hans,
> 
> On Wednesday 05 September 2012 10:28:30 Hans Verkuil wrote:
> > On Wed 5 September 2012 10:04:41 Jun Nie wrote:
> > > Is there any summary for this summit or presentation material? I am
> > > looking forward for some idea on CEC. It is really complex in
> > > functionality.
> > > Maybe other guys is expecting simiar fruite from summit too.
> > 
> > Yes, there will be a summit report. It's not quite finished yet, I think.
> > 
> > With respect to CEC we had some useful discussions. It will have to be a
> > new class of device (/dev/cecX), so the userspace API will be separate from
> > drm or v4l.
> 
> This is a repeat of a comment from the KS discussion: what about using the 
> socket API instead of a device node ?

What benefit would that give me? I frankly don't think it maps that well to
a socket API. Some parts of the CEC protocol are more or less network like,
but others are point-to-point. Basically CEC is a mess, protocol-wise, and
I much prefer a char-device where you have more flexibility.

Regards,

	Hans

> > And the kernel will have to take care of the core CEC protocol w.r.t.
> > control and discovery due to the HDMI 1.4a requirements.
> > 
> > I plan on starting work on this within 1-2 weeks.
> > 
> > My CEC presentation can be found here:
> > 
> > http://hverkuil.home.xs4all.nl/presentations/v4l2-workshop-cec.odp
> 
> 

Re: Media summit/KS-2012 proposals

[Sylwester Nawrocki]

Hi Mauro,

On 07/31/2012 07:58 PM, Mauro Carvalho Chehab wrote:
> In order to sum-up the discussions around the media summit,
> this is what we've got so far:
> 
> Proposals									     	proposed by
> =====================================================================================|=========================================================================================
> Common device tree bindings for media devices						Sylvester Nawrocki / Guennadi Liakhovetski
> ALSA and V4L/Media Controller								Steven Toth / Laurent Pinchart
> ARM and needed features for V4L/DVB							Steven Toth
> Intel media SDK										Steven Toth
> V4L compiance tool									Hans Verkuil
> V4L2 API ambiguities									Hans Verkuil
> Media Controller library								Laurent Pincart / Sakari Ailus
> SoC Vendors feedback – how to help them to go upstream – Android's V4L2 cam library	Laurent Pincart / Guennadi Liakhovetski / Palash Bandyopadhyay / Naveen Krishnamurthy
> Synchronization, shared resource and optimizations					Pawel Osciak
> V4L2/DVB issues from userspace perspective						Rémi Denis-Courmont
> 
> As we'll have only one day for the summit, we may need to remove some
> themes, or maybe to get an extra time during LPC for the remaining
> discussions.
> 	
> Possible attendents:
> ===================
> 
> Guennadi Liakhovetski
> Laurent Pinchart
> Mauro Carvalho Chehab
> Michael Krufky
> Naveen Krishnamurthy
> +1 seat from ST (waiting Naveen to define who will be the other seat)
> Palash Bandyopadhyay
> Pawel Osciak
> Rémi Denis-Courmont
> Sakari Ailus
> Steven Toth
> Sylvester Nawrocki
> 
> Am I missing something?
> 
> Are there other proposals or people intending to participate?

Unfortunately I won't be attending the media summit this time.
Instead, my colleagues: Bartlomiej Zolnierkiewicz and Marek Szyprowski
could cover the topic I proposed. Can you please add them to the
list of attendants instead of me ?

Best regards,
Sylwester