From: Timur Tabi <timur@freescale.com>
To: Sean Thayne <sthayne@summitmediagroupllc.com>
Cc: alsa-devel@alsa-project.org
Subject: Re: How can you tell if the speaker jack on your sound card has anything plugged into it???
Date: Fri, 25 Apr 2008 15:56:46 -0500 [thread overview]
Message-ID: <4812458E.5030508@freescale.com> (raw)
In-Reply-To: <481244BD.3060501@summitmediagroupllc.com>
Sean Thayne wrote:
> How would one go about getting this info? I'm trying to create a
> monitoring tool for a specific sound card, so the driver's standardized...
First, the hardware has to detect insertion. Then, it has to send a
signal to the driver (either via a status register or an interrupt).
Assuming you have all that (I've never seen a sound card that provides
this info), perhaps you can specify the output jack only when something
is plugged in? That is, you register the output jack when something is
plugged in, and then deregister it when something is removed.
next prev parent reply other threads:[~2008-04-25 20:56 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-25 19:29 How can you tell if the speaker jack on your sound card has anything plugged into it??? Sean Thayne
2008-04-25 19:49 ` Mark Brown
2008-04-25 20:53 ` Sean Thayne
2008-04-25 20:56 ` Timur Tabi [this message]
2008-04-25 21:02 ` Sean Thayne
2008-04-25 21:04 ` Timur Tabi
2008-04-25 22:02 ` Mark Brown
2008-04-25 21:08 ` Robert Jarzmik
2008-04-25 21:28 ` Lennart Poettering
2008-04-25 21:32 ` Tobin Davis
2008-04-25 21:55 ` Mark Brown
2008-04-25 21:40 ` Mark Brown
-- strict thread matches above, loose matches on Subject: below --
2008-04-25 19:29 Sean Thayne
2008-04-25 19:28 Sean Thayne
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=4812458E.5030508@freescale.com \
--to=timur@freescale.com \
--cc=alsa-devel@alsa-project.org \
--cc=sthayne@summitmediagroupllc.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.