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