From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-out.m-online.net ([212.18.0.10]:33184 "EHLO mail-out.m-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751954Ab1BGNBv (ORCPT ); Mon, 7 Feb 2011 08:01:51 -0500 From: Detlev Zundel To: Guennadi Liakhovetski Cc: Anatolij Gustschin , linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Dan Williams , Markus Niebel Subject: Re: [PATCH 2/2 v2] dma: ipu_idmac: do not lose valid received data in the irq handler References: <1296031789-1721-3-git-send-email-agust@denx.de> <1296476549-10421-1-git-send-email-agust@denx.de> <20110205143505.0b300a3a@wker> <20110205210457.7218ecdc@wker> <20110207122147.4081f47d@wker> Date: Mon, 07 Feb 2011 14:01:48 +0100 In-Reply-To: (Guennadi Liakhovetski's message of "Mon, 7 Feb 2011 12:35:44 +0100 (CET)") Message-ID: MIME-Version: 1.0 Content-Type: text/plain List-ID: Sender: 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 From mboxrd@z Thu Jan 1 00:00:00 1970 From: dzu@denx.de (Detlev Zundel) Date: Mon, 07 Feb 2011 14:01:48 +0100 Subject: [PATCH 2/2 v2] dma: ipu_idmac: do not lose valid received data in the irq handler In-Reply-To: (Guennadi Liakhovetski's message of "Mon, 7 Feb 2011 12:35:44 +0100 (CET)") References: <1296031789-1721-3-git-send-email-agust@denx.de> <1296476549-10421-1-git-send-email-agust@denx.de> <20110205143505.0b300a3a@wker> <20110205210457.7218ecdc@wker> <20110207122147.4081f47d@wker> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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