linux-kernel - Re: [PATCH 1/2] dmaengine: sun4i: Add support for cyclic requests with dedicated DMA

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Message-ID: <20200110161815.iyvtjg35uxfehlqp@gilmour.lan>
Date:   Fri, 10 Jan 2020 17:18:15 +0100
From:   Maxime Ripard <mripard@...nel.org>
To:     Stefan Mavrodiev <stefan@...mex.com>
Cc:     Dan Williams <dan.j.williams@...el.com>,
        Vinod Koul <vkoul@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        open list <linux-kernel@...r.kernel.org>,
        "open list:DMA GENERIC OFFLOAD ENGINE SUBSYSTEM" 
        <dmaengine@...r.kernel.org>,
        "moderated list:ARM/Allwinner sunXi SoC support" 
        <linux-arm-kernel@...ts.infradead.org>,
        "open list:DRM DRIVERS FOR ALLWINNER A10" 
        <dri-devel@...ts.freedesktop.org>, linux-sunxi@...glegroups.com
Subject: Re: [PATCH 1/2] dmaengine: sun4i: Add support for cyclic requests
 with dedicated DMA

On Fri, Jan 10, 2020 at 04:11:39PM +0200, Stefan Mavrodiev wrote:
> Currently the cyclic transfers can be used only with normal DMAs. They
> can be used by pcm_dmaengine module, which is required for implementing
> sound with sun4i-hdmi encoder. This is so because the controller can
> accept audio only from a dedicated DMA.
>
> This patch enables them, following the existing style for the
> scatter/gather type transfers.
>
> Signed-off-by: Stefan Mavrodiev <stefan@...mex.com>

Acked-by: Maxime Ripard <mripard@...nel.org>

Thanks!
Maxime

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