From mboxrd@z Thu Jan 1 00:00:00 1970 From: arnd@arndb.de (Arnd Bergmann) Date: Thu, 12 Mar 2015 09:54:05 +0100 Subject: [PATCH 1/2 v2] dmaengine: remove Renesas Audio DMAC peri peri In-Reply-To: <87oanzf3r1.wl%kuninori.morimoto.gx@renesas.com> References: <87pp8ff3sb.wl%kuninori.morimoto.gx@renesas.com> <87oanzf3r1.wl%kuninori.morimoto.gx@renesas.com> Message-ID: <2564817.a7ILq7Cdmi@wuerfel> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thursday 12 March 2015 00:39:49 Kuninori Morimoto wrote: > From: Kuninori Morimoto > > Renesas R-Car sound (= rsnd) needs 2 DMAC which are called as > Audio DMAC (= 1st DMAC) and Audio DMAC peri peri (2nd DMAC). > And rsnd had assumed that 1st / 2nd DMACs are implemented as DMAEngine. > But, in result of DMA ML discussion, 2nd DMAC was concluded that it is > not a general purpose DMAC (2nd DMAC is for Device to Device inside > sound system). Additionally, current DMAEngine can't support Device to > Device, and we don't have correct DT bindings for it at this point. > So the easiest solution for it is that move it from DMAEngine to rsnd > driver. > Audio DMAC peri peri on DMAEngine is no longer needed. remove it. > > Signed-off-by: Kuninori Morimoto > Acked-by: Geert Uytterhoeven Acked-by: Arnd Bergmann