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From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: jassi brar <jassisinghbrar@gmail.com>
Cc: alsa-devel@alsa-project.org, linux-samsung-soc@vger.kernel.org,
	Jassi Brar <jassi.brar@samsung.com>,
	ben-linux@fluff.org, linux-arm-kernel@lists.infradead.org,
	lrg@slimlogic.co.uk
Subject: Re: [PATCH 3/3] ARM: SMDK64XX: Enable AC97 device
Date: Tue, 26 Jan 2010 10:59:01 +0000	[thread overview]
Message-ID: <20100126105901.GH15759@rakim.wolfsonmicro.main> (raw)
In-Reply-To: <1b68c6791001260252t7f43cb97n710381508040f7d4@mail.gmail.com>

On Tue, Jan 26, 2010 at 07:52:45PM +0900, jassi brar wrote:
> On Tue, Jan 26, 2010 at 7:19 PM, Mark Brown

> > This one needs a bit more explanation - why are you changing the AC97
> > slot?  Is this a general problem with the S3C AC97 controller?  It'd
> > also be better to use the symbolic register name rather than a number.

> It is no problem.
> wm9713 can be configured to place data in one of four possible pair of slots
> 3-4 or 6-9 or 7-8 or 10-11. This call ensures the selected pair is 3-4(standard
> and compatible with Samsung AC97 controllers). Though we don't need to
> explicitly set this if we drop mic dai_link.

Ah, OK.  In this case dropping the second DAI link is the better option
- the CODEC only presents a single stereo ADC pair on the AC97 bus with
selectable inputs rather than having separate ADC(s) for microphone(s).
This means you can't run both DAIs in parallel anyway.

WARNING: multiple messages have this Message-ID (diff)
From: broonie@opensource.wolfsonmicro.com (Mark Brown)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/3] ARM: SMDK64XX: Enable AC97 device
Date: Tue, 26 Jan 2010 10:59:01 +0000	[thread overview]
Message-ID: <20100126105901.GH15759@rakim.wolfsonmicro.main> (raw)
In-Reply-To: <1b68c6791001260252t7f43cb97n710381508040f7d4@mail.gmail.com>

On Tue, Jan 26, 2010 at 07:52:45PM +0900, jassi brar wrote:
> On Tue, Jan 26, 2010 at 7:19 PM, Mark Brown

> > This one needs a bit more explanation - why are you changing the AC97
> > slot? ?Is this a general problem with the S3C AC97 controller? ?It'd
> > also be better to use the symbolic register name rather than a number.

> It is no problem.
> wm9713 can be configured to place data in one of four possible pair of slots
> 3-4 or 6-9 or 7-8 or 10-11. This call ensures the selected pair is 3-4(standard
> and compatible with Samsung AC97 controllers). Though we don't need to
> explicitly set this if we drop mic dai_link.

Ah, OK.  In this case dropping the second DAI link is the better option
- the CODEC only presents a single stereo ADC pair on the AC97 bus with
selectable inputs rather than having separate ADC(s) for microphone(s).
This means you can't run both DAIs in parallel anyway.

  reply	other threads:[~2010-01-26 10:59 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-01-26  5:51 [PATCH 1/3] ARM: S3C64XX: Add AC97 platform resources jassisinghbrar
2010-01-26  5:51 ` jassisinghbrar at gmail.com
2010-01-26  5:51 ` [PATCH 2/3] ASoC: AC97: S3C: Add controller driver jassisinghbrar
2010-01-26  5:51   ` jassisinghbrar at gmail.com
2010-01-26  5:51   ` [PATCH 3/3] ARM: SMDK64XX: Enable AC97 device jassisinghbrar
2010-01-26  5:51     ` jassisinghbrar at gmail.com
2010-01-26 10:19     ` Mark Brown
2010-01-26 10:19       ` Mark Brown
2010-01-26 10:52       ` jassi brar
2010-01-26 10:52         ` jassi brar
2010-01-26 10:59         ` Mark Brown [this message]
2010-01-26 10:59           ` Mark Brown
2010-01-26  7:32   ` [PATCH 2/3] ASoC: AC97: S3C: Add controller driver jassi brar
2010-01-26  7:32     ` jassi brar
2010-01-26 10:53     ` Mark Brown
2010-01-26 10:53       ` Mark Brown
2010-01-26 11:49       ` jassi brar
2010-01-26 11:49         ` jassi brar
2010-01-26 10:23   ` Ben Dooks
2010-01-26 10:23     ` Ben Dooks
2010-01-26 11:03     ` jassi brar
2010-01-26 11:03       ` jassi brar
2010-01-26 11:09       ` Mark Brown
2010-01-26 11:09         ` Mark Brown
2010-01-26 11:57         ` jassi brar
2010-01-26 11:57           ` jassi brar
2010-01-26 12:04           ` Mark Brown
2010-01-26 12:04             ` Mark Brown
2010-01-27  2:45       ` jassi brar
2010-01-27  2:45         ` jassi brar
2010-01-27 10:25         ` Mark Brown
2010-01-27 10:25           ` Mark Brown
2010-01-26 10:47   ` Mark Brown
2010-01-26 10:47     ` Mark Brown
2010-01-26 11:17     ` jassi brar
2010-01-26 11:17       ` jassi brar
2010-01-26 11:52       ` Mark Brown
2010-01-26 11:52         ` Mark Brown
2010-01-26 12:11         ` jassi brar
2010-01-26 12:11           ` jassi brar
2010-01-26 13:00           ` Mark Brown
2010-01-26 13:00             ` Mark Brown
2010-01-26 10:12 ` [PATCH 1/3] ARM: S3C64XX: Add AC97 platform resources Mark Brown
2010-01-26 10:12   ` Mark Brown

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