Hi, I was looking into creating jack sense device. I see that I can create jack sense for headphones/headset/mic etc,. but if I want to send events like long press and short press of headset keys, can I use this same framework in someway? Is there any way to event these kinds of actions to user space through ALSA? Thanks, Harsha >-----Original Message----- >From: Mark Brown [mailto:broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx] >Sent: Wednesday, July 08, 2009 3:16 PM >To: Harsha, Priya >Cc: Koul, Vinod; alsa-devel@xxxxxxxxxxxxxxxx >Subject: Re: [PATCH] [RFC 8/13] Intel SST sound card driver > >On Wed, Jul 08, 2009 at 11:14:07AM +0530, Harsha, Priya wrote: >> >-----Original Message----- >> >From: Mark Brown [mailto:broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx] > >> >Yes, the jacks currently appear as input devices to applications. >> >Takashi was also considering adding some ALSA-specific ways of reading >> >the state to go alongside these. > >> If I create a jack sense device, how would an application use it? >> Currently do we have any mechanism in ALSA to send events to user space >> when a jack is detected? If not, would it be ok if I stick to netlink > >Yes, they see it as a normal input device under /dev/input. The jack >input device will provide one or more switches and buttons depending on >what it can detect. > >> events for now. We have a platform specific daemon that is being >> developed that listens on netlink events and that is why the driver >> sends them. > >Your daemon should be able to use /dev/input for this. This will also >help if users run other applications on the system since the standard >API for jack sense will be there. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
