From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [GIT PULL] Samsung devel-dma ops for v3.6 Date: Wed, 11 Jul 2012 08:18:03 +0000 Message-ID: <201207110818.04091.arnd@arndb.de> References: <0c5001cd5e41$87daa1b0$978fe510$%kim@samsung.com> <201207101242.41867.arnd@arndb.de> <0e1301cd5f34$008fe1e0$01afa5a0$%kim@samsung.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from moutng.kundenserver.de ([212.227.126.171]:58589 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750829Ab2GKIS3 (ORCPT ); Wed, 11 Jul 2012 04:18:29 -0400 In-Reply-To: <0e1301cd5f34$008fe1e0$01afa5a0$%kim@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org List-Id: linux-samsung-soc@vger.kernel.org To: Kukjin Kim Cc: 'Mark Brown' , 'Olof Johansson' , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, 'Grant Likely' , w.sang@pengutronix.de, 'Boojin Kim' , 'Kyoungil Kim' , 'Vinod Koul' , 'Dan Williams' , 'Ben Dooks' On Wednesday 11 July 2012, Kukjin Kim wrote: > Yeah, let me explain the status for Samsung SoCs' DMA. There are 3 different > DMA IPs, samsung specific s3c24xx dma, pl080 and pl330. As you know, pl330 > already moved in drivers/dma for using common DMA engine and Alim is > re-working on pl080 > (http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg10954.html > ) and let me check its progress. But s3c24xx dma is not ready yet. When > pl330 was moving, my colleague, Boojin Kim posted to use common DMA APIs for > Samsung drivers which are using DMA such as spi and ASoC. But it was > including too many ifdef for checking which DMA is used and it can occur > breakage for multiplatform > (http://www.spinics.net/lists/arm-kernel/msg131137.html). So we implemented > to use some dma_ops after discussing with Grant Likely > (http://lists.infradead.org/pipermail/linux-arm-kernel/2011-July/058171.html > ). > > Anyway, we will try to use common DMA APIs for all Samsung SoCs. But need > more time ;) Ok, sounds good. Thanks for the background information! Arnd From mboxrd@z Thu Jan 1 00:00:00 1970 From: arnd@arndb.de (Arnd Bergmann) Date: Wed, 11 Jul 2012 08:18:03 +0000 Subject: [GIT PULL] Samsung devel-dma ops for v3.6 In-Reply-To: <0e1301cd5f34$008fe1e0$01afa5a0$%kim@samsung.com> References: <0c5001cd5e41$87daa1b0$978fe510$%kim@samsung.com> <201207101242.41867.arnd@arndb.de> <0e1301cd5f34$008fe1e0$01afa5a0$%kim@samsung.com> Message-ID: <201207110818.04091.arnd@arndb.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wednesday 11 July 2012, Kukjin Kim wrote: > Yeah, let me explain the status for Samsung SoCs' DMA. There are 3 different > DMA IPs, samsung specific s3c24xx dma, pl080 and pl330. As you know, pl330 > already moved in drivers/dma for using common DMA engine and Alim is > re-working on pl080 > (http://www.mail-archive.com/linux-samsung-soc at vger.kernel.org/msg10954.html > ) and let me check its progress. But s3c24xx dma is not ready yet. When > pl330 was moving, my colleague, Boojin Kim posted to use common DMA APIs for > Samsung drivers which are using DMA such as spi and ASoC. But it was > including too many ifdef for checking which DMA is used and it can occur > breakage for multiplatform > (http://www.spinics.net/lists/arm-kernel/msg131137.html). So we implemented > to use some dma_ops after discussing with Grant Likely > (http://lists.infradead.org/pipermail/linux-arm-kernel/2011-July/058171.html > ). > > Anyway, we will try to use common DMA APIs for all Samsung SoCs. But need > more time ;) Ok, sounds good. Thanks for the background information! Arnd