linux-kernel - Re: [PATCH 1/4] ASoC: rockchip: add rockchip machine driver

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]

Date:	Wed, 13 May 2015 10:21:32 -0700
From:	Dylan Reid <dgreid@...omium.org>
To:	Mark Brown <broonie@...nel.org>
Cc:	zhengxing <zhengxing@...k-chips.com>,
	Xing Zheng <acgzxing@...il.com>,
	Douglas Anderson <dianders@...omium.org>,
	Heiko Stübner <heiko@...ech.de>,
	Sonny Rao <sonnyrao@...omium.org>,
	linux-rockchip@...ts.infradead.org,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 1/4] ASoC: rockchip: add rockchip machine driver

On Wed, May 13, 2015 at 9:42 AM, Mark Brown <broonie@...nel.org> wrote:
> On Wed, May 13, 2015 at 09:23:01PM +0800, zhengxing wrote:
>> On 2015年05月13日 03:22, Mark Brown wrote:
>
>> >Is it not possible to extend simple card to handle your use cases?
>> >Given the very generic naming and the fact that things like jack
>> >detection and so on should depend on the CODEC and board usually rather
>> >than on the SoC it doesn't sound like this is Rockchip specific.
>
>> >This also looks like you're reimplementing some device model enumeration
>> >stuff which probably shouldn't be happening but let's understand the
>> >problem you're trying to solve here before going too far into the code.
>
>> Because we are trying to bring rt5650 in the project, so we intend to
>> describe supported codecs with DTS via only a rockchip machine driver file,
>> others remain pre-implement(like max98090 / rt5645 that vendor machine
>> driver).
>
> I don't undertand what you're saying here, sorry - why is this not just
> a case of writing multiple machine drivers?

I don't understand this either.  I'd think the best solution is
simple-card, configured through DTS for each device.

>
>> I communicated with Dylan, and he told me that the jack detection is an
>> issue in the simple-card, and suggested we are better to send them at
>> present.
>
> But what are these issues?

The issue I was referring to when I spoke with rock chip was the need
to pass the jack simple-card creates to the headset chip or codec.  We
need a way to specify a device like a tsa227e or rt5650 to pass the
jack to, which events are supported by the jack, and a generic API for
passing the jack.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/