From mboxrd@z Thu Jan  1 00:00:00 1970
From: lars@metafoo.de (Lars-Peter Clausen)
Date: Fri, 01 Aug 2014 20:09:17 +0200
Subject: [PATCH] Documentation: dmaengine: Add a documentation for the
 dma controller API
In-Reply-To: <20140801171551.GG8181@intel.com>
References: <1406736193-26685-1-git-send-email-maxime.ripard@free-electrons.com>
 <20140730160607.GM8181@intel.com> <20140731074440.GY3952@lukather>
 <53DA3A48.8070900@metafoo.de> <20140731161331.GD3952@lukather>
 <53DA74B3.6060502@metafoo.de> <20140731173730.GH3952@lukather>
 <53DB490A.5040709@metafoo.de> <20140801085707.GI3952@lukather>
 <20140801171551.GG8181@intel.com>
Message-ID: <53DBD7CD.3030103@metafoo.de>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On 08/01/2014 07:15 PM, Vinod Koul wrote:
> On Fri, Aug 01, 2014 at 10:57:07AM +0200, Maxime Ripard wrote:
>> On Fri, Aug 01, 2014 at 10:00:10AM +0200, Lars-Peter Clausen wrote:
>>> On 07/31/2014 07:37 PM, Maxime Ripard wrote:
>>>> On Thu, Jul 31, 2014 at 06:54:11PM +0200, Lars-Peter Clausen wrote:
>>>>> On 07/31/2014 06:13 PM, Maxime Ripard wrote:
>>>>> [...]
>>>>>>  From what you're saying, and judging from the drivers that already
>>>>>> implement it, can't it be moved directly to the framework itself ?
>>>>>>
>>>>>
>>>>> What exactly do you mean by moving it directly to the framework? The
>>>>> slave_caps API is part of the DMAengine framework.
>>>>
>>>> Not its implementation, which is defined by each and every driver,
>>>> while the behaviour of device_slave_caps is rather generic.
>>>>
>>>
>>> Do you mean something like adding a dma_slave_caps struct field to
>>> the DMA channel that gets initialized when the channel is created
>>> and then remove the callback? That makes some sense.
>>
>> I was rather thinking into something like:
>>    - Splitting device_control into independant functions
> I like this part :)

I started working on this a while ago by splitting out the slave_config 
functionality into its own callback. Haven't managed to finalize it since it 
wasn't really top priority.

- Lars