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author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2006-04-02 05:10:28 (GMT) |
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committer | Dmitry Torokhov <dtor_core@ameritech.net> | 2006-04-02 05:10:28 (GMT) |
commit | b9ec4e109d7a342e83e1210e05797222e36555c3 (patch) | |
tree | 47ff5cb19c3b43f9907006e7b491df547f29b71e /drivers/char/keyboard.c | |
parent | 53a2670cd9611cf7c3b3bf9875b0b4041160fa60 (diff) | |
download | linux-fsl-qoriq-b9ec4e109d7a342e83e1210e05797222e36555c3.tar.xz |
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>
Diffstat (limited to 'drivers/char/keyboard.c')
-rw-r--r-- | drivers/char/keyboard.c | 118 |
1 files changed, 101 insertions, 17 deletions
diff --git a/drivers/char/keyboard.c b/drivers/char/keyboard.c index 8b603b2..935670a 100644 --- a/drivers/char/keyboard.c +++ b/drivers/char/keyboard.c @@ -74,7 +74,7 @@ void compute_shiftstate(void); k_self, k_fn, k_spec, k_pad,\ k_dead, k_cons, k_cur, k_shift,\ k_meta, k_ascii, k_lock, k_lowercase,\ - k_slock, k_dead2, k_ignore, k_ignore + k_slock, k_dead2, k_brl, k_ignore typedef void (k_handler_fn)(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs); @@ -100,7 +100,7 @@ static fn_handler_fn *fn_handler[] = { FN_HANDLERS }; const int max_vals[] = { 255, ARRAY_SIZE(func_table) - 1, ARRAY_SIZE(fn_handler) - 1, NR_PAD - 1, NR_DEAD - 1, 255, 3, NR_SHIFT - 1, 255, NR_ASCII - 1, NR_LOCK - 1, - 255, NR_LOCK - 1, 255 + 255, NR_LOCK - 1, 255, NR_BRL - 1 }; const int NR_TYPES = ARRAY_SIZE(max_vals); @@ -126,7 +126,7 @@ static unsigned long key_down[NBITS(KEY_MAX)]; /* keyboard key bitmap */ static unsigned char shift_down[NR_SHIFT]; /* shift state counters.. */ static int dead_key_next; static int npadch = -1; /* -1 or number assembled on pad */ -static unsigned char diacr; +static unsigned int diacr; static char rep; /* flag telling character repeat */ static unsigned char ledstate = 0xff; /* undefined */ @@ -394,22 +394,30 @@ void compute_shiftstate(void) * Otherwise, conclude that DIACR was not combining after all, * queue it and return CH. */ -static unsigned char handle_diacr(struct vc_data *vc, unsigned char ch) +static unsigned int handle_diacr(struct vc_data *vc, unsigned int ch) { - int d = diacr; + unsigned int d = diacr; unsigned int i; diacr = 0; - for (i = 0; i < accent_table_size; i++) { - if (accent_table[i].diacr == d && accent_table[i].base == ch) - return accent_table[i].result; + if ((d & ~0xff) == BRL_UC_ROW) { + if ((ch & ~0xff) == BRL_UC_ROW) + return d | ch; + } else { + for (i = 0; i < accent_table_size; i++) + if (accent_table[i].diacr == d && accent_table[i].base == ch) + return accent_table[i].result; } - if (ch == ' ' || ch == d) + if (ch == ' ' || ch == (BRL_UC_ROW|0) || ch == d) return d; - put_queue(vc, d); + if (kbd->kbdmode == VC_UNICODE) + to_utf8(vc, d); + else if (d < 0x100) + put_queue(vc, d); + return ch; } @@ -419,7 +427,10 @@ static unsigned char handle_diacr(struct vc_data *vc, unsigned char ch) static void fn_enter(struct vc_data *vc, struct pt_regs *regs) { if (diacr) { - put_queue(vc, diacr); + if (kbd->kbdmode == VC_UNICODE) + to_utf8(vc, diacr); + else if (diacr < 0x100) + put_queue(vc, diacr); diacr = 0; } put_queue(vc, 13); @@ -615,7 +626,7 @@ static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag, s printk(KERN_ERR "keyboard.c: k_lowercase was called - impossible\n"); } -static void k_self(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs) +static void k_unicode(struct vc_data *vc, unsigned int value, char up_flag, struct pt_regs *regs) { if (up_flag) return; /* no action, if this is a key release */ @@ -628,7 +639,10 @@ static void k_self(struct vc_data *vc, unsigned char value, char up_flag, struct diacr = value; return; } - put_queue(vc, value); + if (kbd->kbdmode == VC_UNICODE) + to_utf8(vc, value); + else if (value < 0x100) + put_queue(vc, value); } /* @@ -636,13 +650,23 @@ static void k_self(struct vc_data *vc, unsigned char value, char up_flag, struct * dead keys modifying the same character. Very useful * for Vietnamese. */ -static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs) +static void k_deadunicode(struct vc_data *vc, unsigned int value, char up_flag, struct pt_regs *regs) { if (up_flag) return; diacr = (diacr ? handle_diacr(vc, value) : value); } +static void k_self(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs) +{ + k_unicode(vc, value, up_flag, regs); +} + +static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs) +{ + k_deadunicode(vc, value, up_flag, regs); +} + /* * Obsolete - for backwards compatibility only */ @@ -650,7 +674,7 @@ static void k_dead(struct vc_data *vc, unsigned char value, char up_flag, struct { static unsigned char ret_diacr[NR_DEAD] = {'`', '\'', '^', '~', '"', ',' }; value = ret_diacr[value]; - k_dead2(vc, value, up_flag, regs); + k_deadunicode(vc, value, up_flag, regs); } static void k_cons(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs) @@ -835,6 +859,62 @@ static void k_slock(struct vc_data *vc, unsigned char value, char up_flag, struc } } +/* by default, 300ms interval for combination release */ +static long brl_timeout = 300; +MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for combination on first release, < 0 for dead characters)"); +module_param(brl_timeout, long, 0644); +static void k_brl(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs) +{ + static unsigned pressed,committing; + static unsigned long releasestart; + + if (kbd->kbdmode != VC_UNICODE) { + if (!up_flag) + printk("keyboard mode must be unicode for braille patterns\n"); + return; + } + + if (!value) { + k_unicode(vc, BRL_UC_ROW, up_flag, regs); + return; + } + + if (value > 8) + return; + + if (brl_timeout < 0) { + k_deadunicode(vc, BRL_UC_ROW | (1 << (value - 1)), up_flag, regs); + return; + } + + if (up_flag) { + if (brl_timeout) { + if (!committing || + jiffies - releasestart > (brl_timeout * HZ) / 1000) { + committing = pressed; + releasestart = jiffies; + } + pressed &= ~(1 << (value - 1)); + if (!pressed) { + if (committing) { + k_unicode(vc, BRL_UC_ROW | committing, 0, regs); + committing = 0; + } + } + } else { + if (committing) { + k_unicode(vc, BRL_UC_ROW | committing, 0, regs); + committing = 0; + } + pressed &= ~(1 << (value - 1)); + } + } else { + pressed |= 1 << (value - 1); + if (!brl_timeout) + committing = pressed; + } +} + /* * The leds display either (i) the status of NumLock, CapsLock, ScrollLock, * or (ii) whatever pattern of lights people want to show using KDSETLED, @@ -1125,9 +1205,13 @@ static void kbd_keycode(unsigned int keycode, int down, } if (keycode > NR_KEYS) - return; + if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8) + keysym = K(KT_BRL, keycode - KEY_BRL_DOT1 + 1); + else + return; + else + keysym = key_map[keycode]; - keysym = key_map[keycode]; type = KTYP(keysym); if (type < 0xf0) { |