From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jochen =?iso-8859-1?B?Vm/f?= Subject: Re: [RFC] Add dB scale information to AK4xxx codec Date: Mon, 4 Sep 2006 12:13:06 +0100 Message-ID: <20060904111303.GA24842@localhost.localdomain> References: <20060903155357.GA10408@tarte.seehuhn.de> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0585033378==" Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@lists.sourceforge.net Errors-To: alsa-devel-bounces@lists.sourceforge.net To: Takashi Iwai Cc: alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org --===============0585033378== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="9amGYk9869ThD9tj" Content-Disposition: inline --9amGYk9869ThD9tj Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi Takashi, On Mon, Sep 04, 2006 at 11:58:57AM +0200, Takashi Iwai wrote: > > From table 17 (page 35) of the AK5365 specs I think that IPGA and DATT > > are only separate units inside the chip, but should be treated as one > > continuous scale for the purpose of the driver. The table looks like > > the input volume can be adjusted in steps from "mute" to +12dB. Why > > would we want two controls here? >=20 > Actually they are treated independently in the chip. IPGA works like > a preamp, and the total volume is IPGA + DATT. Even if you set a > value to IPGA with MSB, say 0x82, DATT won't be changed and the old > value is kept. And it's vice versa - if you set 0x02 later, IPGA will > stay as 0x82. This is so, at least with AK4524 and AK4528. Possibly > this was changed on AK5365, though... Did you have a look at table 17? I think the old behaviour was better. > Hm, there is no "PCM Capture Gain Capture", maybe "PCM Capture Gain > Volume"? It's IPGA. I will send the amixer output this evening when I get back home. All the best, Jochen --=20 http://www.maths.warwick.ac.uk/~voss/ --9amGYk9869ThD9tj Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) iD8DBQFE/Ao/f+iD8yEbECURAol8AJ9a96ke2utvlEa046YKiMLGPJg0+wCeLmb6 ywmqZsq1yyikYPQywNwmCbc= =WRRl -----END PGP SIGNATURE----- --9amGYk9869ThD9tj-- --===============0585033378== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 --===============0585033378== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Alsa-devel mailing list Alsa-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-devel --===============0585033378==--