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Subject: Re: [PATCH 01/14] mfd: arizona: Add jack pointer to struct arizona
To:     Mark Brown <broonie@kernel.org>
Cc:     Charles Keepax <ckeepax@opensource.cirrus.com>,
        Lee Jones <lee.jones@linaro.org>,
        MyungJoo Ham <myungjoo.ham@samsung.com>,
        Chanwoo Choi <cw00.choi@samsung.com>,
        Cezary Rojewski <cezary.rojewski@intel.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
        Liam Girdwood <liam.r.girdwood@linux.intel.com>,
        Jie Yang <yang.jie@linux.intel.com>,
        patches@opensource.cirrus.com, linux-kernel@vger.kernel.org,
        alsa-devel@alsa-project.org
References: <20201227211232.117801-1-hdegoede@redhat.com>
 <20201227211232.117801-2-hdegoede@redhat.com>
 <20201228122138.GA5352@sirena.org.uk>
 <44f84485-8efc-39f9-d0a7-cb8db2ea3faa@redhat.com>
 <20201228162807.GE5352@sirena.org.uk>
 <20201229130657.GN9673@ediswmail.ad.cirrus.com>
 <19c2d056-4f71-2c4c-c243-cdcc0115876c@redhat.com>
 <20201229150807.GF4786@sirena.org.uk>
 <07037a8a-1d35-362e-1b82-b73b81f7c6ac@redhat.com>
 <20201230133803.GC4428@sirena.org.uk>
From:   Hans de Goede <hdegoede@redhat.com>
Message-ID: <fca91ed2-408b-bb31-f6e8-4391f06b0ccc@redhat.com>
Date:   Fri, 1 Jan 2021 14:24:34 +0100
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Hi,

On 12/30/20 2:38 PM, Mark Brown wrote:
> On Tue, Dec 29, 2020 at 04:33:09PM +0100, Hans de Goede wrote:
>> On 12/29/20 4:08 PM, Mark Brown wrote:

<snip>
 
>>> The whole purpose of creating sound/core/jack.c is to abstract away the
>>> userspace interfaces from the drivers, most audio devices shouldn't be
>>> working with extcon directly just as they shouldn't be creating input
>>> devices or ALSA controls directly.  The missing bit there is to add
>>> extcon into jack.c.
> 
>> So what you are suggesting is making sound/core/jack.c register the
>> extcon device and then have arizona-extcon.c talk to sound/core/jack.c
>> and no longer do any extcon stuff itself.
> 
> Yes.

Ok, so this seems to be the same solution as which the opensource.cirrus.com
folks want in that both you and the opensource.cirrus.com people want to
change the arizona-extcon.c driver to be changed to stop reporting extcon
info directly itself and instead do all the reporting through sound/core/jack.c.

Where the thoughts on this seem to differ is that the opensource.cirrus.com
folks seem to be fine with dropping extcon support, where as you suggest
to extend sound/core/jack.c to register an extcon device and have it report
extcon events.

I'm with the opensource.cirrus.com folks here that ATM it seems best to just
drop extcon support since the only user is Android, which also supports the
input_dev API.

If the need arises we can always add extcon-support to sound/core/jack.c
later.

So I'll start on reworking this patch-series to change the arizona-extcon.c
driver to stop it reporting extcon info directly itself and instead do all
the reporting through sound/core/jack.c.

Regards,

Hans