From: Lu Guanqun <guanqun.lu@intel.com>
To: Takashi Iwai <tiwai@suse.de>
Cc: "alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
Mark Brown <broonie@opensource.wolfsonmicro.com>,
Rajeev Kumar <rajeev-dlh.kumar@st.com>,
"lrg@slimlogic.co.uk" <lrg@slimlogic.co.uk>
Subject: Re: [PATCH V3 1/5] sound: asoc: Adding support for STA529 Audio Codec
Date: Fri, 15 Apr 2011 22:10:27 +0800 [thread overview]
Message-ID: <20110415141027.GA19186@qtel.sh.intel.com> (raw)
In-Reply-To: <s5hk4evlv9a.wl%tiwai@suse.de>
On Fri, Apr 15, 2011 at 05:27:29PM +0800, Takashi Iwai wrote:
> In alsa-mixer abstraction, the "Capture Source" enum control is split
> over multiple switches (a switch per enum item). This was a historical
> design at the time SoundBlaster is still standard.
>
> One of the problems with this abstraction is that it can't handle
> multiple capture-source controls. So, many drivers use nowadays
> "Input Source" control instead. But, in the earlier alsa-lib, this
> wasn't handled as the capture control, thus it appears as a global
> (both directional) control in alsamixer.
>
> Now, this control is handled as a capture control in alsa-lib, so the
> appearance is corrected.
>
Thanks for your insightful information. :)
Much appreciated!
--
guanqun
next prev parent reply other threads:[~2011-04-15 14:11 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-11 5:29 [PATCH V3 0/5] Adding ASoC drivers for SPEAr13XX platform Rajeev Kumar
2011-04-11 5:30 ` [PATCH V3 1/5] sound: asoc: Adding support for STA529 Audio Codec Rajeev Kumar
2011-04-11 5:30 ` [PATCH V3 2/5] sound: asoc: Adding support for SPEAr13XX ASoC platform driver Rajeev Kumar
2011-04-11 5:30 ` [PATCH V3 3/5] sound: asoc: Adding support for SPEAr13XX ASoC machine driver Rajeev Kumar
2011-04-11 5:30 ` [PATCH V3 4/5] sound: asoc: Adding Kconfig and Makefile to support SPEAr13XX ASoC driver Rajeev Kumar
2011-04-11 5:30 ` [PATCH V3 5/5] sound: asoc: Adding support for SPEAr13XX in soc Rajeev Kumar
2011-04-11 13:00 ` [PATCH V3 2/5] sound: asoc: Adding support for SPEAr13XX ASoC platform driver Lu Guanqun
2011-04-18 5:00 ` rajeev
2011-04-11 12:53 ` [PATCH V3 1/5] sound: asoc: Adding support for STA529 Audio Codec Lu Guanqun
2011-04-11 13:35 ` Mark Brown
2011-04-11 15:09 ` Lu Guanqun
2011-04-11 23:54 ` Mark Brown
2011-04-12 0:06 ` Lu Guanqun
2011-04-11 14:56 ` Mark Brown
2011-04-14 9:54 ` Takashi Iwai
2011-04-14 12:18 ` Mark Brown
2011-04-14 12:25 ` Takashi Iwai
2011-04-14 14:19 ` Lu Guanqun
2011-04-14 14:28 ` Lu Guanqun
2011-04-15 9:27 ` Takashi Iwai
2011-04-15 14:10 ` Lu Guanqun [this message]
2011-04-15 9:23 ` Takashi Iwai
2011-04-20 4:24 ` rajeev
2011-04-20 10:56 ` Mark Brown
2011-04-20 11:41 ` rajeev
2011-04-20 11:42 ` rajeev
2011-04-11 15:45 ` Lu Guanqun
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