Thread (13 messages) 13 messages, 3 authors, 2016-12-28

disable input event device

From: Ran Shalit <hidden>
Date: 2016-12-28 06:54:44

On Sun, Dec 4, 2016 at 12:33 PM, Greg KH [off-list ref] wrote:
On Sat, Dec 03, 2016 at 07:18:50PM +0200, Ran Shalit wrote:
quoted

On Sat, Dec 3, 2016 at 3:15 PM, Greg KH [off-list ref] wrote:

    On Sat, Dec 03, 2016 at 02:43:30PM +0200, Ran Shalit wrote:
    > Hello,
    >
    > Is there some way to disable input event device ?
    > Maybe a way to disable its irq usage ?
    >
    > I actually rather do that from shell, not from kernel, because the kernel
    > source is not available, and I thought that issue is also relevant in the
    > forum.

    But the Linux kernel source is available, why not just not load the
    driver for the device you are wanting to not be "connected"?


Hi Greg,

I am trying to do that from android, in a device where the kernel source is not
available :( .....
By the way, I think the company (No.1 for D6 smartwatch) should supply the
source because kernel is GPL , Right ?
Yes it is, please contact the company about this to get the source code
for your device.  If you have problems with this, please try the Linux
Foundation's form for this type of thing at:
        https://www.linuxsources.org/content/open-compliance-directory-request-contact-information
as it works really well.
quoted
Therefore I try to achieve it by doing some actions in shell.
Disconnect the device from the driver by writing the device id to the
"unbind" sysfs file for the driver that is controling the device.
Examples of how to do this in detail should be on the web somewhere, I
think I wrote a lwn.net article about this a long time ago...
Hi,

Just wanted to update:
the unbind method worked with some kernels, but not all.
In one device&kernel, after doing the unbind, on entering event, the
device immediately has boot itself !

Yet , luckily, I have found another method which works:
   chmod 777 /dev/input/eventX
   rm /dev/input/eventX
It works :) !

Thanks,
Ran
good luck!

greg k-h
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