how to pass event to l4linux

[Stefan Kalkowski]

Hi,

On 05/08/2013 11:47 AM, Stefan Kalkowski wrote:
> Hi,
> 
> On 05/07/2013 04:27 PM, gaober_bupt at ...176... wrote:
>> Hi!
>> i implement touch screen driver in os\src\input\ft5406,and can get the coordinate x, y,then i use:
>> _ev_queue.add(Input::Event(Input::Event::MOTION, 0, _abs_x, _abs_y, 0, 0));
>> _ev_queue.add(Input::Event(Input::Event::PRESS, Input::BTN_TOUCH, _abs_x, _abs_y, 0, 0));
>> _ev_queue.add(Input::Event(Input::Event::RELEASE, Input::BTN_TOUCH, _abs_x, _abs_y, 0, 0));
>> to add the event to the event queue.
>> now the question is how can i pass the events to linux.
> 
> normally, you don't have to care about that. It should work out of the
> box. The virtual input driver in L4Linux takes all input events it gets
> as a client of either nit_fb, or the input driver itself. Which input
> service L4Linux is using depends on your configuration, and the routing
> you've set within it.

I forgot to add:
In fact, Genode's virtual input driver for L4Linux consists of two
devices a mouse and a keyboard device, which are registered at the Linux
kernel. BTN_TOUCH events are delegated to the mouse device, as long as
you've enabled CONFIG_ANDROID in your Linux Kernel configuration. Have a
look at file 'ports-foc/src/drivers/genode_fb.c:332'.

Do you get any touch events in Linux? You might poll the appropriate
'/dev/input/eventX' file. You can search in '/sys/class/input/*' for the
appropriate event file that represents the Genode mouse.

Regards
Stefan

> 
> Regards
> Stefan
> 
>> the bot modules are:
>> set boot_modules {
>>  core
>>  init
>>  timer
>>  omap4_gpio_drv
>>  omap4_i2c_drv
>>  omap4_fb_drv
>>  input_ft5406_drv
>>  sd_card_drv
>>  usb_drv
>>  nic_bridge
>>  nitpicker
>>  nit_fb
>>  part_blk
>>  terminal
>>  terminal_log
>>  l4android
>>  root-ginger.gz
>> }
>> thank you very much!!!
> 

-- 
Stefan Kalkowski
Genode Labs

http://www.genode-labs.com/ · http://genode.org/