linux-kernel - Re: [PATCH 05/12] ASoC: sun4i-codec: Add support for A31 playback through headphone output

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Date:   Sat, 8 Oct 2016 20:29:03 -0500
From:   Rob Herring <robh@...nel.org>
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        alsa-devel@...a-project.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-sunxi@...glegroups.com
Subject: Re: [PATCH 05/12] ASoC: sun4i-codec: Add support for A31 playback
 through headphone output

On Mon, Oct 03, 2016 at 07:07:57PM +0800, Chen-Yu Tsai wrote:
> The A31 has a similar codec to the A10/A20. The PCM parts are very
> similar, with just different register offsets. The analog paths are
> very different. There are more inputs and outputs.
> 
> The quirks structure is expanded to include different register offsets
> and separate callbacks for creating the ASoC card. Also the DMA burst
> length is increased to 8. While the A10 DMA engine supports bursts of
> 1, 4 and 8, the A31 engine only supports 1 and 8.
> 
> This patch adds support for the basic playback path of the A31 codec,
> from the DAC to the headphones. Headphone detection, microphone,
> signaling, other inputs/outputs and capture will be added later.
> 
> Signed-off-by: Chen-Yu Tsai <wens@...e.org>
> ---
>  .../devicetree/bindings/sound/sun4i-codec.txt      |   6 +-

Acked-by: Rob Herring <robh@...nel.org>

>  sound/soc/sunxi/sun4i-codec.c                      | 396 +++++++++++++++++----
>  2 files changed, 334 insertions(+), 68 deletions(-)