linux-kernel - Re: [PATCH] DMAEngine: Define generic transfer request api

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Message-ID: <DD211C52-97D7-4E55-A2F8-3C88A6D45A75@ti.com>
Date:	Tue, 23 Aug 2011 10:43:05 -0400
From:	Matt Porter <mporter@...com>
To:	"Koul, Vinod" <vinod.koul@...el.com>
CC:	Linus Walleij <linus.walleij@...aro.org>,
	Jassi Brar <jaswinder.singh@...aro.org>, <sundaram@...com>,
	<dan.j.williams@...el.com>, <linux-kernel@...r.kernel.org>,
	<linux-omap@...r.kernel.org>, <rmk+kernel@....linux.org.uk>,
	<nsekhar@...com>
Subject: Re: [PATCH] DMAEngine: Define generic transfer request api

On Aug 19, 2011, at 9:43 AM, Koul, Vinod wrote:

> On Tue, 2011-08-16 at 15:06 +0200, Linus Walleij wrote:
>> On Tue, Aug 16, 2011 at 2:56 PM, Koul, Vinod <vinod.koul@...el.com> wrote:
>> 
>>> Currently we have two approaches to solve this problem first being the
>>> DMA_STRIDE_CONFIG proposed by Linus W, I feel this one is better
>>> approach as this can give client ability to configure each transfer
>>> rather than set for the channel. Linus W, do you agree?
>> 
>> I think Sundaram is in the position of doing some heavy work on
>> using one or the other of the API:s, and I think he is better
>> suited than anyone else of us to select what scheme to use,
>> in the end he's going to write the first code using the API.
> And Unfortunately TI folks don't seem to care about this discussion :(
> Haven't seen anything on this from them, or on previous RFC by Jassi

IIRC, Sundaram went on holiday. I suspect he cares a lot about this
discussion as he has a session on the topic at LPC.

-Matt
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