From: Mark Brown <broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
To: Lars-Peter Clausen <lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org>
Cc: uclinux-dist-devel-ZG0+EudsQA8dtHy/vicBwGD2FQJk+8+b@public.gmane.org,
alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org,
Liam Girdwood <lrg-l0cyMroinI0@public.gmane.org>
Subject: Re: [PATCH 2/8] ASoC: Add support for virtual switch controls
Date: Fri, 11 Jan 2013 12:19:12 +0000 [thread overview]
Message-ID: <20130111121912.GY20956@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <1357833977-3682-2-git-send-email-lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org>
[-- Attachment #1.1: Type: text/plain, Size: 983 bytes --]
On Thu, Jan 10, 2013 at 05:06:11PM +0100, Lars-Peter Clausen wrote:
> More specific this will be used by the ADAU1361 driver where the hardware has
> a mute control for each of the DAC output paths, but we have to make sure that
> the path is muted whenever the DAC is disabled. So the mute switches needs
> to be controlled by DAPM so it can disable them before disabling the DAC. On the
> other hand we still want to be to mute individual paths. This will be
> accomplished by using virtual switch controls.
This doesn't sound like it does quite what you want - it means you don't
actually end up with a mute control, only a power control (which is also
going to affect everything else in the path). I'd expect to see
something like this implemented by having a control that has a specified
value forced in the register while the control is enabled (kind of the
opposite of a supply). This is a fairly common need for older parts
though it's unusual to see it on a new device.
[-- Attachment #1.2: Digital signature --]
[-- Type: application/pgp-signature, Size: 836 bytes --]
[-- Attachment #2: Type: text/plain, Size: 213 bytes --]
_______________________________________________
Uclinux-dist-devel mailing list
Uclinux-dist-devel-ZG0+EudsQA8dtHy/vicBwGD2FQJk+8+b@public.gmane.org
https://blackfin.uclinux.org/mailman/listinfo/uclinux-dist-devel
next prev parent reply other threads:[~2013-01-11 12:19 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-10 16:06 [PATCH 1/8] regmap: Add support for 24 bit wide register addresses Lars-Peter Clausen
2013-01-10 16:06 ` [PATCH 2/8] ASoC: Add support for virtual switch controls Lars-Peter Clausen
[not found] ` <1357833977-3682-2-git-send-email-lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org>
2013-01-11 12:19 ` Mark Brown [this message]
2013-01-11 12:38 ` Lars-Peter Clausen
2013-01-11 12:45 ` Mark Brown
[not found] ` <20130111124535.GZ20956-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
2013-01-11 12:56 ` Lars-Peter Clausen
2013-01-11 13:57 ` Mark Brown
2013-01-11 15:05 ` Lars-Peter Clausen
[not found] ` <50F02A51.3010108-Qo5EllUWu/uELgA04lAiVw@public.gmane.org>
2013-01-11 15:08 ` [alsa-devel] " Lars-Peter Clausen
2013-01-11 15:22 ` Mark Brown
2013-01-11 16:24 ` Mark Brown
[not found] ` <1357833977-3682-1-git-send-email-lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org>
2013-01-10 16:06 ` [PATCH 3/8] ASoC: Add ADAU1X61 and ADAU1X81 CODECs common code Lars-Peter Clausen
2013-01-10 16:06 ` [PATCH 4/8] ASoC: Add ADAU1361/ADAU1761 CODEC support Lars-Peter Clausen
2013-01-10 16:06 ` [PATCH 5/8] ASoC: Add ADAU1381/ADAU1781 " Lars-Peter Clausen
2013-01-10 16:06 ` [PATCH 6/8] ASoC: Constify ops and compr_ops fields of snd_soc_dai_link Lars-Peter Clausen
2013-01-13 22:55 ` Mark Brown
2013-01-10 16:06 ` [PATCH 7/8] ASoC: Blackfin: ADAU1X61 eval board support Lars-Peter Clausen
2013-01-10 16:06 ` [PATCH 8/8] ASoC: Blackfin: ADAU1X81 " Lars-Peter Clausen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20130111121912.GY20956@opensource.wolfsonmicro.com \
--to=broonie-yzvpicuk2aatku/dhu1wvuem+bqzidxxqq4iyu8u01e@public.gmane.org \
--cc=alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org \
--cc=lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org \
--cc=lrg-l0cyMroinI0@public.gmane.org \
--cc=uclinux-dist-devel-ZG0+EudsQA8dtHy/vicBwGD2FQJk+8+b@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).