From mboxrd@z Thu Jan 1 00:00:00 1970 From: lars@metafoo.de (Lars-Peter Clausen) Date: Thu, 16 May 2013 13:38:52 +0200 Subject: [RFC/PATCH] dma: of: Make of_dma_simple_xlate match on DMA device and channel ID In-Reply-To: <16693906.m6Wa34B7F1@avalon> References: <1368624449-29003-1-git-send-email-laurent.pinchart@ideasonboard.com> <3106852.EdI2KVGSEm@avalon> <5193A113.4050301@metafoo.de> <16693906.m6Wa34B7F1@avalon> Message-ID: <5194C54C.10300@metafoo.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 05/16/2013 01:30 PM, Laurent Pinchart wrote: > Hi Lars-Peter, > > On Wednesday 15 May 2013 16:52:03 Lars-Peter Clausen wrote: >> On 05/15/2013 03:55 PM, Laurent Pinchart wrote: >>> On Wednesday 15 May 2013 15:39:09 Lars-Peter Clausen wrote: >>>> On 05/15/2013 03:27 PM, Laurent Pinchart wrote: >>>>> When translating a DT DMA channel specifier, the most common use case is >>>>> to match the DMA channel based on the channel DMA engine and channel ID. >>>>> Modify the of_dma_simple_xlate() function to do so, simplifying the API >>>>> for DMA engine drivers. >>>>> >>>>> There is no need to check the DMA cells count in the filter function as >>>>> the check is already performed by the caller in of_dma_get_controller(). >>>>> >>>>> Signed-off-by: Laurent Pinchart >>>> >>>> Hi, >>>> >>>> I've submitted a very similar patch some time ago, see >>>> https://lkml.org/lkml/2013/3/25/250 >>> >>> Thanks. So my patch makes at least some sense :-) >>> >>> I had the impression that this is what omap-dma needs as well, hence the >>> modification to the existing xlate function. I'm fine with a separate >>> function as well if the current code covers different use cases. >> >> My first attempt was to modify simple_xlate function, but I think it didn't >> work for all users (some of which aren't applied yet), so I added a separate >> function. > > OK. Do you plan to push your patch to mainline ? You can add my > Yes, I already submitted it for mainline inclusion. Waiting for Vinod to either apply or comment on it. > Tested-by: Laurent Pinchart > Acked-by: Laurent Pinchart