linux-kernel - Re: [PATCH 4/4] ASoC: wm8940: Read chip ID when wm8940 codec probing

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Message-ID: <20221214131014.GO105268@ediswmail.ad.cirrus.com>
Date:   Wed, 14 Dec 2022 13:10:14 +0000
From:   Charles Keepax <ckeepax@...nsource.cirrus.com>
To:     Lukasz Majewski <lukma@...x.de>
CC:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, Stephen Kitt <steve@....org>,
        <patches@...nsource.cirrus.com>, <alsa-devel@...a-project.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 4/4] ASoC: wm8940: Read chip ID when wm8940 codec probing

On Wed, Dec 14, 2022 at 01:37:43PM +0100, Lukasz Majewski wrote:
> The wm8940 provides the chip ID information via I2C. In this
> patch this information is read and if not matching expected
> value, the probe function is aborted.
> 
> This prevents from using (i.e. inserting) other wm89* modules
> which use the sam I2C bus address.
> 
> Signed-off-by: Lukasz Majewski <lukma@...x.de>
> ---

Acked-by: Charles Keepax <ckeepax@...nsource.cirrus.com>

Thanks,
Charles