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mixer failed to set recording source in 2011R1-RC1

Question asked by karthikeyan on Nov 11, 2011
Latest reply on Nov 14, 2011 by Aaronwu


   I am using a bf527 based board with 2011R1-RC1 distro and 2011R1-RC2 tool chain. I did the following setting for the sound card.



Linux/blackfin 3.0.8 kernal configuration--> Device Drivers -->

<*> Sound card support  --->

        [*]   Preclaim OSS device numbers

      <*>   Advanced Linux Sound Architecture  --->

               <*>   OSS Mixer API

               <*>   OSS PCM (digital audio) API

                [*]     OSS PCM (digital audio) API - Include plugin system

                [*]   Support old ALSA API

                [*]   Verbose procfs contents

                [*]   Generic sound devices  --->

               <*>   ALSA for SoC audio support  --->

                         <*>   SoC I2S Audio for the ADI BF5xx chip

                         <*>     SoC SSM2602 Audio support for BF52x ezkit

                         (0)   Set a SPORT for Sound chip

    < >   Open Sound System (DEPRECATED)  --->



We built mixer and ALSA Utils. When we were trying to set the mic as recording device we go the following results.


root:/> mixer +rec mic
Invalid recording source mic
root:/> amixer sset 'Input Mux' 'Mic'
Simple mixer control 'Input Mux',0
  Capabilities: enum
  Items: 'Line' 'Mic'
  Item0: 'Mic'


What might be the issue with the mixer application?