All of lore.kernel.org
 help / color / mirror / Atom feed
From: Detlev Zundel <dzu@denx.de>
To: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Anatolij Gustschin <agust@denx.de>,
	linux-media@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	Dan Williams <dan.j.williams@intel.com>,
	Markus Niebel <Markus.Niebel@tqs.de>
Subject: Re: [PATCH 2/2 v2] dma: ipu_idmac: do not lose valid received data in the irq handler
Date: Mon, 07 Feb 2011 14:01:48 +0100	[thread overview]
Message-ID: <m24o8g80cj.fsf@ohwell.denx.de> (raw)
In-Reply-To: <Pine.LNX.4.64.1102071232440.29036@axis700.grange> (Guennadi Liakhovetski's message of "Mon, 7 Feb 2011 12:35:44 +0100 (CET)")

Hi Guennadi,

>> How small are the frames in you test? What is the highest fps value in
>> your test?
>
> QVGA, don't know fps exactly, pretty high, between 20 and 60fps, I think. 
> Just try different frams sizes, go down to 64x48 or something.

Is this a "real" usage scenario?  It feels that this is not what most
users will do and it certainly is not relevant for our application.  

Is it possible that if you are interested in such a scenario that you do
the testing?  We have spent quite a lot of time to fix the driver for
real (well full frame) capturing already and I am relucatant to spend
more time for corner cases.  Maybe we should document this as "known
limitations" of the setup?  What do you think?  I'll much rather have a
driver working for real world scenarios than for marginal test cases.

Thanks
  Detlev

--
DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu@denx.de

WARNING: multiple messages have this Message-ID (diff)
From: dzu@denx.de (Detlev Zundel)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2 v2] dma: ipu_idmac: do not lose valid received data in the irq handler
Date: Mon, 07 Feb 2011 14:01:48 +0100	[thread overview]
Message-ID: <m24o8g80cj.fsf@ohwell.denx.de> (raw)
In-Reply-To: <Pine.LNX.4.64.1102071232440.29036@axis700.grange> (Guennadi Liakhovetski's message of "Mon, 7 Feb 2011 12:35:44 +0100 (CET)")

Hi Guennadi,

>> How small are the frames in you test? What is the highest fps value in
>> your test?
>
> QVGA, don't know fps exactly, pretty high, between 20 and 60fps, I think. 
> Just try different frams sizes, go down to 64x48 or something.

Is this a "real" usage scenario?  It feels that this is not what most
users will do and it certainly is not relevant for our application.  

Is it possible that if you are interested in such a scenario that you do
the testing?  We have spent quite a lot of time to fix the driver for
real (well full frame) capturing already and I am relucatant to spend
more time for corner cases.  Maybe we should document this as "known
limitations" of the setup?  What do you think?  I'll much rather have a
driver working for real world scenarios than for marginal test cases.

Thanks
  Detlev

--
DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de

  reply	other threads:[~2011-02-07 13:01 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-26  8:49 [PATCH 0/2] Fix issues with frame reception from CSI on i.MX31 Anatolij Gustschin
2011-01-26  8:49 ` Anatolij Gustschin
2011-01-26  8:49 ` [PATCH 1/2] v4l: soc-camera: start stream after queueing the buffers Anatolij Gustschin
2011-01-26  8:49   ` Anatolij Gustschin
2011-01-29 19:16   ` Guennadi Liakhovetski
2011-01-29 19:16     ` Guennadi Liakhovetski
2011-01-29 19:24     ` Anatolij Gustschin
2011-01-29 19:24       ` Anatolij Gustschin
2011-01-31 12:19   ` [PATCH 1/2 v2] " Anatolij Gustschin
2011-01-31 12:19     ` Anatolij Gustschin
2011-01-26  8:49 ` [PATCH 2/2] dma: ipu_idmac: do not lose valid received data in the irq handler Anatolij Gustschin
2011-01-26  8:49   ` Anatolij Gustschin
2011-01-27  8:22   ` Anatolij Gustschin
2011-01-27  8:22     ` Anatolij Gustschin
2011-01-31  5:56     ` Dan Williams
2011-01-31  5:56       ` Dan Williams
2011-01-31 12:22   ` [PATCH 2/2 v2] " Anatolij Gustschin
2011-01-31 12:22     ` Anatolij Gustschin
2011-02-03 10:09     ` Guennadi Liakhovetski
2011-02-03 10:09       ` Guennadi Liakhovetski
2011-02-04  9:19       ` Markus Niebel
2011-02-04  9:19         ` Markus Niebel
2011-02-04  9:37         ` Guennadi Liakhovetski
2011-02-04  9:37           ` Guennadi Liakhovetski
2011-02-04 11:37           ` Markus Niebel
2011-02-04 11:37             ` Markus Niebel
2011-02-04  9:35       ` Anatolij Gustschin
2011-02-04  9:35         ` Anatolij Gustschin
2011-02-05 13:35       ` Anatolij Gustschin
2011-02-05 13:35         ` Anatolij Gustschin
2011-02-05 16:36         ` Guennadi Liakhovetski
2011-02-05 16:36           ` Guennadi Liakhovetski
2011-02-05 20:04           ` Anatolij Gustschin
2011-02-05 20:04             ` Anatolij Gustschin
2011-02-07 11:09             ` Guennadi Liakhovetski
2011-02-07 11:09               ` Guennadi Liakhovetski
2011-02-07 11:21               ` Anatolij Gustschin
2011-02-07 11:21                 ` Anatolij Gustschin
2011-02-07 11:35                 ` Guennadi Liakhovetski
2011-02-07 11:35                   ` Guennadi Liakhovetski
2011-02-07 13:01                   ` Detlev Zundel [this message]
2011-02-07 13:01                     ` Detlev Zundel
2011-02-07 13:35                     ` Guennadi Liakhovetski
2011-02-07 13:35                       ` Guennadi Liakhovetski
2011-02-07 14:43                       ` Detlev Zundel
2011-02-07 14:43                         ` Detlev Zundel
2011-02-07 13:45                   ` Anatolij Gustschin
2011-02-07 13:45                     ` Anatolij Gustschin
2011-02-07 14:00                     ` Guennadi Liakhovetski
2011-02-07 14:00                       ` Guennadi Liakhovetski
2011-02-07 16:49                     ` Guennadi Liakhovetski
2011-02-07 16:49                       ` Guennadi Liakhovetski
2011-02-14  9:57                       ` Dan Williams
2011-02-14  9:57                         ` Dan Williams
2011-01-28  7:46 ` [PATCH 0/2] Fix issues with frame reception from CSI on i.MX31 Anatolij Gustschin
2011-01-28  7:46   ` Anatolij Gustschin

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=m24o8g80cj.fsf@ohwell.denx.de \
    --to=dzu@denx.de \
    --cc=Markus.Niebel@tqs.de \
    --cc=agust@denx.de \
    --cc=dan.j.williams@intel.com \
    --cc=g.liakhovetski@gmx.de \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-media@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.