linux-kernel - Re: [PATCH v3 2/9] ASoC: sun4i-i2s: Add regmap field to sign extend sample

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Message-ID: <CAGb2v67NS8QenKMYSE9DBsCSSbhMDZbsG=agkxxQWUgOtqtMfg@mail.gmail.com>
Date:   Sat, 22 Dec 2018 01:06:52 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Code Kipper <codekipper@...il.com>
Cc:     Maxime Ripard <maxime.ripard@...e-electrons.com>,
        linux-sunxi <linux-sunxi@...glegroups.com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Linux-ALSA <alsa-devel@...a-project.org>,
        "Andrea Venturi (pers)" <be17068@...rbole.bo.it>
Subject: Re: [PATCH v3 2/9] ASoC: sun4i-i2s: Add regmap field to sign extend sample

On Fri, Dec 21, 2018 at 11:21 PM <codekipper@...il.com> wrote:
>
> From: Marcus Cooper <codekipper@...il.com>
>
> On the newer SoCs this is set by default to transfer a 0 after
> each sample in each slot. Add the regmap field to configure this
> and set it so that it pads the sample with 0s.
>
> Signed-off-by: Marcus Cooper <codekipper@...il.com>

The code matches the description, however I lack the in depth
knowledge to understand the difference.

ChenYu