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

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Message-ID: <20200115170731.vt6twfhvuwjrbbup@gilmour.lan>
Date:   Wed, 15 Jan 2020 18:07:31 +0100
From:   Maxime Ripard <mripard@...nel.org>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     Stefan Mavrodiev <stefan@...mex.com>,
        Dan Williams <dan.j.williams@...el.com>,
        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 Wed, Jan 15, 2020 at 06:01:37PM +0530, Vinod Koul wrote:
> On 10-01-20, 16:11, 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.
>
> I presume you want this to go with drm tree (if not let me know) so:
>
> Acked-by: Vinod Koul <vkoul@...nel.org>

There's no need for it to go through DRM, it can go through your tree :)

Maxime

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