From: Koro Chen <koro.chen@mediatek.com>
To: Mark Brown <broonie@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>, <robh+dt@kernel.org>,
<matthias.bgg@gmail.com>, <perex@perex.cz>, <tiwai@suse.de>,
<srv_heupstream@mediatek.com>,
<linux-mediatek@lists.infradead.org>, <galak@codeaurora.org>,
<lgirdwood@gmail.com>, <devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <alsa-devel@alsa-project.org>
Subject: Re: [RESEND RFC PATCH 1/3] ASoC: mediatek: Add binding support for AFE driver
Date: Mon, 4 May 2015 09:57:19 +0800 [thread overview]
Message-ID: <1430704639.4497.6.camel@mtksdaap41> (raw)
In-Reply-To: <20150430201207.GK22845@sirena.org.uk>
On Thu, 2015-04-30 at 21:12 +0100, Mark Brown wrote:
> On Wed, Apr 22, 2015 at 11:17:20AM +0800, Koro Chen wrote:
>
> > If using DPCM, it seems the most suitable FE DAIs will be memif, and
> > external interface like I2S should be BE DAIs. Do you think it is
> > suitable for our memif to be FE DAIs? Then which memif to used can be
> > described in a machine driver's FE DAIs. But I think this has a problem
> > that our memif is one-direction, playback or capture. So the binded pcm
> > device cannot have playback and capture capability together. May it
> > cause trouble for user space apps that assumes there will be pcmC0D0p,
> > pcmC0D0c?
>
> I think the only userspace application you really have to worry about
> here is PulseAudio which (at least with UCM) should be able to cope
> since it needs to handle things like USB microphones. I think
> everything else I can think of can either cope or has to handle the same
> use cases as PulseAudio does so should have support.
Thank you very much for the feedback, I will try DPCM.
next prev parent reply other threads:[~2015-05-04 1:57 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1428653649-38200-1-git-send-email-koro.chen@mediatek.com>
[not found] ` <1428653649-38200-2-git-send-email-koro.chen@mediatek.com>
2015-04-18 17:34 ` [RESEND RFC PATCH 1/3] ASoC: mediatek: Add binding support for AFE driver Mark Brown
2015-04-20 4:37 ` Sascha Hauer
2015-04-20 20:48 ` Mark Brown
2015-04-21 9:49 ` Sascha Hauer
2015-04-21 10:14 ` Mark Brown
2015-04-21 10:15 ` Koro Chen
2015-04-21 10:56 ` Mark Brown
2015-04-22 3:17 ` Koro Chen
2015-04-30 20:12 ` Mark Brown
2015-05-04 1:57 ` Koro Chen [this message]
[not found] ` <1428653649-38200-3-git-send-email-koro.chen@mediatek.com>
2015-04-18 17:37 ` [RESEND RFC PATCH 2/3] ASoC: mediatek: Add AFE connection control Mark Brown
2015-04-20 4:50 ` Sascha Hauer
2015-04-20 20:52 ` Mark Brown
2015-04-21 5:50 ` Sascha Hauer
2015-04-21 10:15 ` Mark Brown
[not found] ` <1428653649-38200-4-git-send-email-koro.chen@mediatek.com>
2015-04-18 17:51 ` [RESEND RFC PATCH 3/3] ASoC: mediatek: Add AFE platform driver Mark Brown
2015-04-20 6:22 ` Koro Chen
2015-04-20 20:55 ` Mark Brown
2015-04-21 2:27 ` Koro Chen
2015-04-21 10:05 ` Mark Brown
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