Hi, I am wondering if it is a good idea to create support for a phone hook switch, or a handset pick up switch, like that found on Amstrad E3 (Delta) videophone, using alsa jack framework. After my initial attempt to add support for the switch using gpio-keys driver, I am no longer sure if it is a good idea to follow the keyboard model, that the driver has been designed after, for driving a switch that has nothing to do with keyboards and may required a different approach. OTOH, the switch is closely related to a handset, and handsets can be seen as sound devices, can't they? So maybe alsa jack would fit better than keyboard? However, I am not sure if the switch in question matches the alsa jack model closely enough. I see the switch usage not as simple as turning handset microphone/speaker on or off. It can be used for other purposes as well, like accepting a phone call or actually dialing a number that has been just typed in. Furthermore, it can be used to turn off a speakerphone function, while, in turn, the related handset microphone/speaker pair can be turned off not only with this switch, but with a handsfree button as well, for example. All that extra functionality looks like belonging to userspace rather then kernel, not like other alsa jack implementations that seem to do all the job of switching media paths inside the kernel. That is why I am not sure if the jack model is suitable for the purpose. Thanks, Janusz -- To unsubscribe from this list: send the line "unsubscribe alsa-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
