From: Eliot Blennerhassett <linux@audioscience.com>
To: alsa-devel@alsa-project.org
Cc: SUBHRANIL CHOUDHURY <subhra85@gmail.com>
Subject: Re: Additing a new Hardware Specific feature in the ALSA driver
Date: Tue, 23 Dec 2008 10:48:32 +1300 [thread overview]
Message-ID: <49500B30.8030201@audioscience.com> (raw)
In-Reply-To: <35fa40850812212118i479dcd57s35c3d50b7b8ab40d@mail.gmail.com>
SUBHRANIL CHOUDHURY wrote:
> Eliot,
> Suppose i need to change the DAC gain, ADC gain of the audio codec and
> also disable and enable AGC of the codec i need to put some IOCTLs in
> the driver.
> So, in case of ALSA how do i implement those IOCTLs in the driver and
> also expose them to the application through the ALSA library.
No! For this kind of control You just need to implement standard alsa
controls in your driver.
BOOLEAN: AGC ON/OFF
INTEGER: DAC gain.
See "writing an ALSA driver" for details, and study the source of any
ALSA driver.
http://www.alsa-project.org/~tiwai/writing-an-alsa-driver/c843.htm
--
Eliot
next prev parent reply other threads:[~2008-12-22 21:48 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-20 13:54 Additing a new Hardware Specific feature in the ALSA driver SUBHRANIL CHOUDHURY
2008-12-21 21:01 ` Eliot Blennerhassett
[not found] ` <35fa40850812212118i479dcd57s35c3d50b7b8ab40d@mail.gmail.com>
2008-12-22 21:48 ` Eliot Blennerhassett [this message]
-- strict thread matches above, loose matches on Subject: below --
2008-12-20 14:13 SUBHRANIL CHOUDHURY
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