Dne 9.11.2011 09:13, Takashi Iwai napsal(a):
At Wed, 09 Nov 2011 08:50:12 +0100, Pavel Hofman wrote:
Dne 9.11.2011 06:28, ajay khandelwal napsal(a):
Hi Pavel, Thanks for reply
Simple mixer control 'IEC958 Playback AC97-SPSA',0 Capabilities: volume volume-joined penum Playback channels: Mono Capture channels: Mono Limits: 0 - 3 Mono: 3 [100%]
Thanks. I assume you mean this control. For meaning of this control see e.g. http://alsa.opensrc.org/Realtek_ALC650#SPDIF_support
It is not related to volume, IMO capabilities of this control are incorrect, there should be "enum" instead. Perhaps changing SNDRV_CTL_ELEM_TYPE_INTEGER to SNDRV_CTL_ELEM_TYPE_ENUMERATED ?
Yes, from the design POV, it should have been an enum. But changing this would break many working user-space setups, so no-go for now. Since AC97 is a legacy stuff, the worst thing is to break something.
Fair enough :)
Thanks,
Pavel.