Re: [LAD] announcing envy24control, mudita (*) edition.

From: Niels Mayer <nielsmayer@email-addr-hidden>
Date: Wed Jul 28 2010 - 22:06:16 EEST

On Mon, Jul 26, 2010 at 10:25 PM, Tim E. Real <termtech@rogers.com> wrote:
> For now here's the code, throw it inside
>  dac_volume_to_db() and
>  adc_volume_to_db() but *replace* DAC_VOLUME_NAME with ADC_VOLUME_NAME,
>  and I believe mixer_volume_to_db() and wherever else required.
> Do you need a patch?

No patch needed... I've made the suggested change and it works identically.

I still need to make a similar change in mixer_volume_to_db() and get
the value of my MAX_MIXER_ATTENUATION_DB constant out of ALSA , even
though this is an unchanging aspect across all ICE1712 chips per
architecture: http://nielsmayer.com/envy24control/envy24mixer-architecture.png

#define MAX_MIXER_ATTENUATION_DB 144.0 /* for -144dB */
#define MIN_MIXER_ATTENUATION_DB 0.0 /* for 0dB */
/* NPM: the control values for the digital mixer are 0-96 and not the
   dB attenuation values of MAX_MIXER_ATTENUATION_DB/MIN_MIXER_ATTENUATION_DB
   The following values comprise all the signals mixed in the ice1712's digital
   mixer: MULTI_PLAYBACK_VOLUME, HW_MULTI_CAPTURE_VOLUME,
IEC958_MULTI_CAPTURE_VOLUME:
> amixer -c M66 cget iface=MIXER,name='Multi Playback Volume'
    numid=11,iface=MIXER,name='Multi Playback Volume'
      ; type=INTEGER,access=rw---R--,values=2,min=0,max=96,step=0
      : values=78,67
      | dBscale-min=-144.00dB,step=1.50dB,mute=0
> amixer -c M66 cget iface=MIXER,name="H/W Multi Capture Volume"
    numid=27,iface=MIXER,name='H/W Multi Capture Volume'
      ; type=INTEGER,access=rw---R--,values=2,min=0,max=96,step=0
      : values=0,0
      | dBscale-min=-144.00dB,step=1.50dB,mute=0
> amixer -c M66 cget iface=MIXER,name="IEC958 Multi Capture Volume"
    numid=31,iface=MIXER,name='IEC958 Multi Capture Volume'
      ; type=INTEGER,access=rw------,values=2,min=0,max=96,step=0
      : values=16,0
*/

-- Niels
http://nielsmayer.com
_______________________________________________
Linux-audio-dev mailing list
Linux-audio-dev@lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-dev
Received on Thu Jul 29 00:15:03 2010

This archive was generated by hypermail 2.1.8 : Thu Jul 29 2010 - 00:15:03 EEST