Basic braille screen reader support

This adds a minimalistic braille screen reader support.  This is meant to
be used by blind people e.g.  on boot failures or when / cannot be mounted
etc and thus the userland screen readers can not work.

[akpm@linux-foundation.org: fix exports]
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Cc: Jiri Kosina <jikos@jikos.cz>
Cc: Dmitry Torokhov <dtor@mail.ru>
Acked-by: Alan Cox <alan@redhat.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 4 insertions, 0 deletions

diff --git a/drivers/char/consolemap.c b/drivers/char/consolemap.c
index 6b104e45a322..4246b8e36cb3 100644
--- a/drivers/char/consolemap.c
+++ b/drivers/char/consolemap.c
@@ -277,6 +277,7 @@ u16 inverse_translate(struct vc_data *conp, int glyph, int use_unicode)
                         return p->inverse_translations[m][glyph];
         }
 }
+EXPORT_SYMBOL_GPL(inverse_translate);
 
 static void update_user_maps(void)
 {
diff --git a/drivers/char/keyboard.c b/drivers/char/keyboard.c
index d1c50b3302e5..7f7e798c1384 100644
--- a/drivers/char/keyboard.c
+++ b/drivers/char/keyboard.c
@@ -110,6 +110,7 @@ const int max_vals[] = {
 const int NR_TYPES = ARRAY_SIZE(max_vals);
 
 struct kbd_struct kbd_table[MAX_NR_CONSOLES];
+EXPORT_SYMBOL_GPL(kbd_table);
 static struct kbd_struct *kbd = kbd_table;
 
 struct vt_spawn_console vt_spawn_con = {
@@ -260,6 +261,7 @@ void kd_mksound(unsigned int hz, unsigned int ticks)
         } else
                 kd_nosound(0);
 }
+EXPORT_SYMBOL(kd_mksound);
 
 /*
  * Setting the keyboard rate.
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 71cf203d282d..e458b08139af 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -4004,6 +4004,7 @@ u16 screen_glyph(struct vc_data *vc, int offset)
                 c |= 0x100;
         return c;
 }
+EXPORT_SYMBOL_GPL(screen_glyph);
 
 /* used by vcs - note the word offset */
 unsigned short *screen_pos(struct vc_data *vc, int w_offset, int viewed)