Re: [Qemu-devel] [PATCH 2/2] kbd: add brazil kbd keys to x11 evdev map

[Daniel P. Berrange]

On Wed, May 27, 2015 at 01:19:06PM +0200, Markus Armbruster wrote:
> Gerd Hoffmann <address@hidden> writes:
> 
> > This patch adds the two extra brazilian keys to the evdev keymap for
> > X11.  This patch gets the two keys going with the gtk and sdl1 UIs.
> >
> > With vnc (remote-viewer) only one of the two works correctly.
> > Probably a client-side issue.  Not investigated in detail though.
> >
> > The SDL2 library complains it doesn't know these keys, so the SDL2
> > library must be fixed before we can update ui/sdl2-keymap.h
> >
> > Signed-off-by: Gerd Hoffmann <address@hidden>
> > ---
> >  ui/x_keymap.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/ui/x_keymap.c b/ui/x_keymap.c
> > index b9b0944..4e899b4 100644
> > --- a/ui/x_keymap.c
> > +++ b/ui/x_keymap.c
> > @@ -94,7 +94,7 @@ static const uint8_t x_keycode_to_pc_keycode[115] = {
> >   */
> >  
> >  static const uint8_t evdev_keycode_to_pc_keycode[61] = {
> > -    0,         /*  97 EVDEV - RO   ("Internet" Keyboards) */
> > +    0x73,      /*  97 EVDEV - RO   ("Internet" Keyboards) */
> >      0,         /*  98 EVDEV - KATA (Katakana) */
> >      0,         /*  99 EVDEV - HIRA (Hiragana) */
> >      0x79,      /* 100 EVDEV - HENK (Henkan) */
> > @@ -126,7 +126,7 @@ static const uint8_t evdev_keycode_to_pc_keycode[61] = {
> >      0,         /* 126 EVDEV - I126 ("Internet" Keyboards) */
> >      0,         /* 127 EVDEV - PAUS */
> >      0,         /* 128 EVDEV - ???? */
> > -    0,         /* 129 EVDEV - I129 ("Internet" Keyboards) */
> > +    0xf0,      /* 129 EVDEV - I129 ("Internet" Keyboards) */
> >      0xf1,      /* 130 EVDEV - HNGL (Korean Hangul Latin toggle) */
> >      0xf2,      /* 131 EVDEV - HJCV (Korean Hangul Hanja toggle) */
> >      0x7d,      /* 132 AE13 (Yen)*/
> 
> The two patches together associate
> 
>     name        number      evdev
>     ro          0x73        97
>     kp_comma    0xf0        129
> 
> If I understand things correctly, we can freely choose number (we choose
> it to match PS/2 scancodes, however), but evdev is externally defined.
> Correct?
> 
> My /usr/share/X11/xkb/keycodes/evdev has
> 
>       // Keys that are generated on Japanese keyboards
>       <AB11> = 97;    // backslash/underscore
>       //<RO>   =  97; // Romaji
> 
> and
> 
>       // Extended keys that may be generated on "Internet" keyboards.
>       // evdev has standardize names for these.
>       <I129> = 129;   // #define KEY_KPCOMMA             121
> 
> I guess this is where you got the name 'ro'.  Okay.
> 
> I'm pretty ignorant about evdev, so please excuse if my questions are
> stupid:
> 
> 1. Can you explain why you picked <RO> over <AB11>?

/usr/include/linux/input.h calls it KEY_RO - not sure why
X11 would use AB11 for that keycode instead, but I figure
it is better for use to use the Linux names here.

> 
> 2. Should the comment in your second hunk be changed from
> 
>         EVDEV - I129 ("Internet" Keyboards)
> 
>    to something mentioning KPCOMMA?

Yeah, I think it would make sense.

Regards,
Daniel
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