Input: add support for Braille devices

- Add KEY_BRL_* input keys and K_BRL_* keycodes;
- Add emulation of how braille keyboards usually combine braille dots
  to the console keyboard driver;
- Add handling of unicode U+28xy diacritics.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/linux/input.h b/include/linux/input.h
index 393da04f4301..b0e612dda0cf 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -512,6 +512,15 @@ struct input_absinfo {
 #define KEY_FN_S                0x1e3
 #define KEY_FN_B                0x1e4
 
+#define KEY_BRL_DOT1            0x1f1
+#define KEY_BRL_DOT2            0x1f2
+#define KEY_BRL_DOT3            0x1f3
+#define KEY_BRL_DOT4            0x1f4
+#define KEY_BRL_DOT5            0x1f5
+#define KEY_BRL_DOT6            0x1f6
+#define KEY_BRL_DOT7            0x1f7
+#define KEY_BRL_DOT8            0x1f8
+
 /* We avoid low common keys in module aliases so they don't get huge. */
 #define KEY_MIN_INTERESTING     KEY_MUTE
 #define KEY_MAX                 0x1ff