On Mon, Jun 25, 2012 at 10:47 PM, anish kumar <anish198519851985@xxxxxxxxx> wrote: > On Mon, 2012-06-25 at 18:52 +0530, Dharam Kumar wrote: >> Hi, >> I'm working on a module which is an input device and hence it needs to >> report certain key events. >> >> While browsing through the <linux/input.h>, I did find most of the >> key-codes(which I need to use)already defined but not all. >> >> >> Few of the KEY_xxx which i could not find are: >> >> >> a.) A Key for going to the previous channel. >> b.) Keys for Moving upper-right, lower-right, upper-left and >> lower-left direction(probably a GUI(grid of icons),where you move >> diagonally) >> d.) A key for Subpicture (this 'subpicture' key is deeined in >> CEA-931C). > I think you are interested in the user space implementation of > the keys reported by the input subsystem of kernel. > Keys reported by the driver->input subsystem->reported to user space. > > I am not sure about linux way of reporting keys but in android the key > is reported at a particular sysfs file and this sysfs file is read by > eventhub.cpp.This file in turn is responsible for sending the events > to particular application and it is the responsibility of the > application how they interpret this keys.It can interpret events by > moving diagonally a pointer/touch or going left/right. > Thanks Anish ! To be clear, i just want to know the key-code which will be used by the Input Subsytem of the Kernel. For example, in <linux/input.h> file you will find a lot of #defines like the below,mapping different kind of key events to some key-code or value : #define KEY_UP 0xXYZ #define KEY_DOWN 0xABC and so on... Now, I'm looking for key events like: #define KEY_PREVIOUSCHANNEL <???> #define KEY_RIGHTUP <???> #define kEY_RIGHTLEFT <???> #define kEY_SUBPICTURE <???> and so on... You are probably right , that Userspace reads the key-events/key-codes from certain sysfs entries exported by Android Linux Kernel and these key-codes/events will be handled accordingly by the respective Framework/Application. But I'm really not interested in how and what Userspace gets from Kernel. I'm interested in what values the Kernel or input subsystem will provide to such keys.. > Not sure if this is what you are interested in but would have been > better if you had described the problem in more detail. >> >> >> Does anybody have any idea about this? >> >> >> - >> Dharam >> _______________________________________________ >> Kernelnewbies mailing list >> Kernelnewbies@xxxxxxxxxxxxxxxxx >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
