On 06/26/2012 08:47 AM, Dharam Kumar wrote: > On Tue, Jun 26, 2012 at 12:02 PM, anish kumar > <anish198519851985@xxxxxxxxx> wrote: >> On Mon, 2012-06-25 at 23:24 +0530, Dharam Kumar wrote: >>> 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.. >> Do you have such keys in your device KEY_RIGHTUP? >> > Yes, my device is supposed to support such keys: > RIGHTUP --> moves cursor upper-right direction. > RIGHTDOWN ---> moves cursor lower-right direction. > and similar keys for upper-left and lower-left cursor direction. > Sadly, I could not find any #define in input.h file for such key events. From your response I interpret that you have some kind of custom key-pad, or anything similar which is not a standard keyboard. If there are no such defines in the Kernel, it's probably because no one has had the need for them up to now. I think the implementation should be done as Anish described beforehand. Anyway you can add some defines to your Kernel if this is a requirement for you. Regards, Matthias >>>> 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 > _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
