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>
diff --git a/include/linux/input.h b/include/linux/input.h
index 393da04..b0e612d 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -512,6 +512,15 @@
#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
diff --git a/include/linux/kbd_kern.h b/include/linux/kbd_kern.h
index e87c32a..4eb851e 100644
--- a/include/linux/kbd_kern.h
+++ b/include/linux/kbd_kern.h
@@ -135,6 +135,8 @@
#define U(x) ((x) ^ 0xf000)
+#define BRL_UC_ROW 0x2800
+
/* keyboard.c */
struct console;
diff --git a/include/linux/keyboard.h b/include/linux/keyboard.h
index 0848804..de76843 100644
--- a/include/linux/keyboard.h
+++ b/include/linux/keyboard.h
@@ -44,6 +44,7 @@
#define KT_ASCII 9
#define KT_LOCK 10
#define KT_SLOCK 12
+#define KT_BRL 14
#define K(t,v) (((t)<<8)|(v))
#define KTYP(x) ((x) >> 8)
@@ -427,5 +428,17 @@
#define NR_LOCK 8
+#define K_BRL_BLANK K(KT_BRL, 0)
+#define K_BRL_DOT1 K(KT_BRL, 1)
+#define K_BRL_DOT2 K(KT_BRL, 2)
+#define K_BRL_DOT3 K(KT_BRL, 3)
+#define K_BRL_DOT4 K(KT_BRL, 4)
+#define K_BRL_DOT5 K(KT_BRL, 5)
+#define K_BRL_DOT6 K(KT_BRL, 6)
+#define K_BRL_DOT7 K(KT_BRL, 7)
+#define K_BRL_DOT8 K(KT_BRL, 8)
+
+#define NR_BRL 9
+
#define MAX_DIACR 256
#endif