From: John Zaitseff <J.Zaitseff@zap.org.au>
The following patch to Linux kernel 2.6.23 enables most of the

extra keys found on the Microsoft Natural Ergonomic 4000 USB

keyboard.  I had to add one keycode to include/linux/input.h; feel

free to reallocate the ID assigned to it (KEY_SPELL).
Main changes:
* Enabled the use of the extra "(" and ")" in the top right-hand

  part of the keyboard, above the keypad
* Enable the My Favorites key in the centre of the keyboard (mapped

  to KEY_FAVORITES)
* Map the F1-F12 keys to appropriate keys when the F Lock is off

  (this is quite easy as the keyboard already generates different

  USB key events)
Changes still to be made:
* Map the five buttons above My Favorites to KEY_FN_F1 to KEY_FN_F5
I am not sure how to do this last change correctly: the keyboard

returns a usage->hid of (HID_UP_MSVENDOR | 0xff05) whenever any of

the five keys are pressed or let go (as well as at certain other

times, when the value is 0):
  value = 0x00  --->  none of the five keys are pressed

  value = 0x01  --->  key 1 is pressed

  value = 0x02  --->  key 2 is pressed

  value = 0x04  --->  key 3 is pressed

  value = 0x08  --->  key 4 is pressed

  value = 0x10  --->  key 5 is pressed
Note that although this looks like a bitfield, multiple keys CANNOT

in effect be pressed simultaneously: only one of these six values

is ever returned (as tested).
In any case, this will be for a second patch, once the one in this

e-mail is applied.
Please apply if at all possible!  Please CC me on any discussion,

as I am not subscribed to the mailing lists.
Signed-off-by: John Zaitseff <J.Zaitseff@zap.org.au>

---
 drivers/hid/hid-debug.c     |    4 +++-

 drivers/hid/hid-input.c     |    4 +++-

 drivers/hid/usbhid/usbkbd.c |    2 +-

 include/linux/input.h       |    1 +

 4 files changed, 8 insertions(+), 3 deletions(-)
diff -ruNp linux-2.6.23.orig/drivers/hid/hid-debug.c linux-2.6.23/drivers/hid/hid-debug.c

--- linux...
[ message continues ]

Hi John,
thanks a lot for the patch! However I think I have already added all the

needed support for this keyboard. It is currently in my tree, queued until

Linus opens the merge window for 2.6.24. Please look at

http://git.kernel.org/?p=linux/kernel/git/jikos/hid.git;a=commitdiff;h=0...
Commit 945bcc3a in the same branch is also related.
--

Jiri Kosina

SUSE Labs

-

Dear Jiri,
Excellent!  However, I don't see the following:
* case 0x182: map_key_clear(KEY_FAVORITES);

  ... in drivers/usb/input/hid-input.c, to handle the My Favorites key
* the change to drivers/hid/usbhid/usbkbd.c to enable the "(" and

  ")" on the right hand side of the keyboard
Have these already been included elsewhere?
Yours truly,
John Zaitseff
--

John Zaitseff                    ,--_|\    The ZAP Group

Phone:  +61 2 9643 7737         /      \   Sydney, Australia

E-mail: J.Zaitseff@zap.org.au   \_,--._*   http://www.zap.org.au/

                                      v

-

There is also a patch queued on top of the patchset you were looking at,

which adds support for Natural Ergonomic 6000 Keyboard, which also 
usbkbd.c is not used under normal circumstances (it uses the hid boot

protocol), I don't think it is needed to care too much for updating the

keymap there.
Thanks,
--

Jiri Kosina

SUSE Labs

-