linux-kernel - Re: [PATCH v4 09/13] ASoC: arizona-jack: convert into a helper library for codec drivers

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20210130152528.GT106851@ediswmail.ad.cirrus.com>
Date:   Sat, 30 Jan 2021 15:25:28 +0000
From:   Charles Keepax <ckeepax@...nsource.cirrus.com>
To:     Hans de Goede <hdegoede@...hat.com>
CC:     Lee Jones <lee.jones@...aro.org>,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
        Jie Yang <yang.jie@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        <patches@...nsource.cirrus.com>, <linux-kernel@...r.kernel.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        <alsa-devel@...a-project.org>
Subject: Re: [PATCH v4 09/13] ASoC: arizona-jack: convert into a helper
 library for codec drivers

On Sat, Jan 23, 2021 at 01:13:09PM +0100, Hans de Goede wrote:
> Convert the arizona extcon driver into a helper library for direct use
> from the arizona codec-drivers, rather then being bound to a separate
> MFD cell.
> 
> Note the probe (and remove) sequence is split into 2 parts:
> 
> 1. The arizona_jack_codec_dev_probe() function inits a bunch of
> jack-detect specific variables in struct arizona_priv and tries to get
> a number of resources where getting them may fail with -EPROBE_DEFER.
> 
> 2. Then once the machine driver has create a snd_sock_jack through
> snd_soc_card_jack_new() it calls snd_soc_component_set_jack() on
> the codec component, which will call the new arizona_jack_set_jack(),
> which sets up jack-detection and requests the IRQs.
> 
> This split is necessary, because the IRQ handlers need access to the
> arizona->dapm pointer and the snd_sock_jack which are not available
> when the codec-driver's probe function runs.
> 
> Note this requires that machine-drivers for codecs which are converted
> to use the new helper functions from arizona-jack.c are modified to
> create a snd_soc_jack through snd_soc_card_jack_new() and register
> this jack with the codec through snd_soc_component_set_jack().
> 
> Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
> Signed-off-by: Hans de Goede <hdegoede@...hat.com>
> ---

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

Thanks,
Charles