>From a printk in the soc driver: SNDRV_CTL_IOCTL_ELEM_READ is 0xc2c85512 Is that correct? On 5/11/07, Takashi Iwai <tiwai@xxxxxxx> wrote: > At Fri, 11 May 2007 12:36:01 +0200, > Michel Benoit wrote: > > > > Hello > > > > Now that I have my pcm playback working with aplay with our at91 aSoc > > sound driver I would like to control the volume with softvol. > > > > I followed the instructions from > > http://alsa.opensrc.org/How_to_use_softvol_to_control_the_master_volume > > and I have the following asound.con file in /etc > > > > pcm.!default { > > type plug > > slave.pcm "softvol" > > } > > > > pcm.softvol { > > type softvol > > slave { > > pcm "plughw:0,0" > > } > > control { > > name "PCM volume" > > card 0 > > } > > } > > > > When I play a wav file directly to the device it works fine: > > > > # aplay -Dplughw:0,0 Front_Center.wav > > Playing WAVE 'Front_Center.wav' : Signed 16 bit Little Endian, Rate > > 48000 Hz, Mono > > > > but when I try to use the default softvol device I get the following > > output (and no sound): > > > > # aplay Front_Center.wav > > Playing WAVE 'Front_Center.wav' : Signed 16 bit Little Endian, Rate > > 48000 Hz, Mono > > ALSA sound/core/control.c:1244: unknown ioctl = 0xc2c45512 > > ALSA sound/core/control.c:1244: unknown ioctl = 0xc2c45512 > > ALSA sound/core/control.c:1244: unknown ioctl = 0xc2c45512 > > ALSA sound/core/control.c:1244: unknown ioctl = 0xc2c45512 > > ALSA sound/core/control.c:1244: unknown ioctl = 0xc2c45512 > > ... > > > > Does anyone have any ideas as to why this is happening? > > This should be SNDRV_CTL_IOCTL_ELEM_READ. > > Could you check which number this ioctl is in the kernel code? > e.g. try printk("0x%x\n", SNDRV_CTL_IOCTL_ELEM_READ) in kernel > and in alsa-lib, too. > > > Takashi > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
