Re: [DIGImend-devel] Some problems with hidrd-convert

[Mitch D. <mjd...@af...>]

On Sun, Jul 8, 2012 at 6:21 PM, Nikolai Kondrashov <sp...@gm...> wrote:
>
> echo 0003:172F:0502.0002 | sudo tee /sys/bus/hid/drivers/generic-usb/unbind
> echo 0003:172F:0502.0002 | sudo tee /sys/bus/hid/drivers/waltop/bind
>
> The format of HID bus device ID is this:
>
> TRANSPORT_BUS_ID:VENDOR_ID:PRODUCT_ID.DEVICE_NUMBER

Very strange, the numbers I need are not what I expect:

[root@xiaomao /]# cd /sys/bus/hid/drivers/hid-generic/
[root@xiaomao hid-generic]# ls -la
total 0
drwxr-xr-x.  2 root root    0 Jul 14 18:37 .
drwxr-xr-x. 15 root root    0 Jul 14 18:37 ..
lrwxrwxrwx.  1 root root    0 Jul 14 19:20 0003:040B:2013.0001 ->
../../../../devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0/0003:040B:2013.0001
lrwxrwxrwx.  1 root root    0 Jul 14 19:20 0003:040B:2013.0002 ->
../../../../devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.1/0003:040B:2013.0002
lrwxrwxrwx.  1 root root    0 Jul 14 19:20 0003:08F2:6370.0003 ->
../../../../devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3:1.0/0003:08F2:6370.0003
--w-------.  1 root root 4096 Jul 14 18:37 bind
--w-------.  1 root root 4096 Jul 14 18:37 new_id
--w-------.  1 root root 4096 Jul 14 18:37 uevent
--w-------.  1 root root 4096 Jul 14 18:37 unbind
[root@xiaomao hid-generic]# lsusb
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0402:9665 ALi Corp.
Bus 002 Device 003: ID 040b:2013 Weltrend Semiconductor
Bus 002 Device 004: ID 08f2:6370 Gotop Information Inc.

## Note the bus and device number.  I'll try according to your formula:

[root@xiaomao hid-generic]# echo 0002:08f2:6370:0004 > unbind
bash: echo: write error: No such device

## Let's try the symlink from the dir listing:

[root@xiaomao hid-generic]# echo 0003:08F2:6370.0003 > unbind

## No error message!

[root@xiaomao hid-generic]# ls -la
total 0
drwxr-xr-x.  2 root root    0 Jul 14 18:37 .
drwxr-xr-x. 15 root root    0 Jul 14 18:37 ..
lrwxrwxrwx.  1 root root    0 Jul 14 19:20 0003:040B:2013.0001 ->
../../../../devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0/0003:040B:2013.0001
lrwxrwxrwx.  1 root root    0 Jul 14 19:20 0003:040B:2013.0002 ->
../../../../devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.1/0003:040B:2013.0002
--w-------.  1 root root 4096 Jul 14 18:37 bind
--w-------.  1 root root 4096 Jul 14 18:37 new_id
--w-------.  1 root root 4096 Jul 14 18:37 uevent
--w-------.  1 root root 4096 Jul 14 19:22 unbind
[root@xiaomao hid-generic]#

Also, I'm having a problem with loading modules:

  https://bugzilla.redhat.com/show_bug.cgi?id=840267

I think I'll have to wait for a solution to that before proceeding.

> You can copy the approach used in drivers/hid/hid-uclogic.c - it is
> hard to do simpler. I can help you with making a report descriptor, if
> needed.

Yes I'd like your help please?  Do you understand the format of the
current report?

Mitch.