linux-kernel - Re: [PATCH v2 2/3] dmaengine: at_hdmac: implement pause and resume in atc

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Message-ID: <4DC42841.9040103@atmel.com>
Date:	Fri, 06 May 2011 18:56:33 +0200
From:	Nicolas Ferre <nicolas.ferre@...el.com>
To:	vinod.koul@...el.com
CC:	dan.j.williams@...el.com, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/3] dmaengine: at_hdmac: implement pause and resume
 in atc_control

Le 06/05/2011 19:56, Nicolas Ferre :
> Pause and resume controls are useful for audio devices. This also returns
> correct status from atc_tx_status() in case chan is paused.
> 
> Idea from dw_dmac patch by Linus Walleij.
> 
> Signed-off-by: Nicolas Ferre <nicolas.ferre@...el.com>
> ---

V2: In case of pause, some peripheral are not draining data out of FIFO
    if they are stopped or not clocked: we need to find a way out with
    a simple timeout.

[..]

Best regards,
-- 
Nicolas Ferre

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