linux-kernel - Re: [PATCH V2 11/13] dw_dmac: Allow src/dst msize & flow controller to be configured at runtime

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Date:	Fri, 4 Mar 2011 15:27:26 +0530
From:	viresh kumar <viresh.kumar@...com>
To:	"vinod.koul@...el.com" <vinod.koul@...el.com>,
	"dan.j.williams@...el.com" <dan.j.williams@...el.com>
Cc:	Viresh KUMAR <viresh.kumar@...com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"viresh.linux@...il.com" <viresh.linux@...il.com>,
	"jamie@...ieiles.com" <jamie@...ieiles.com>,
	Armando VISCONTI <armando.visconti@...com>,
	Shiraz HASHIM <shiraz.hashim@...com>,
	amitgoel <amit.goel@...com>,
	"hans-christian.egtvedt@...el.com" <hans-christian.egtvedt@...el.com>
Subject: Re: [PATCH V2 11/13] dw_dmac: Allow src/dst msize & flow controller
 to be configured at runtime

On 03/03/2011 03:47 PM, Viresh KUMAR wrote:
> From: Viresh KUMAR <viresh.kumar@...com>
> 
> Msize or Burst Size is peripheral dependent in case of slave_sg transfers, and
> in case of memcpy transfers it is platform dependent. So msize configuration
> must come from platform data.
> 
> Also some peripherals (ex: JPEG), need to be flow controller for dma transfers,
> so this information in case of slave_sg transfers must come from platform data.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...com>
> ---
>  drivers/dma/dw_dmac.c      |   10 ++++++----
>  drivers/dma/dw_dmac_regs.h |    1 +
>  include/linux/dw_dmac.h    |   30 ++++++++++++++++++++++++++++++
>  3 files changed, 37 insertions(+), 4 deletions(-)
> 

Sorry, i missed similar changes for dw_dma_cyclic_prep(). Will resend it.

--
viresh
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