drivers/s390/char/keyboard.h

   1 /*
   2  *    ebcdic keycode functions for s390 console drivers
   3  *
   4  *    Copyright IBM Corp. 2003
   5  *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
   6  */
   7
   8 #include <linux/tty.h>
   9 #include <linux/tty_flip.h>
  10 #include <linux/keyboard.h>
  11
  12 #define NR_FN_HANDLER   20
  13
  14 struct kbd_data;
  15
  16 typedef void (fn_handler_fn)(struct kbd_data *);
  17
  18 /*
  19  * FIXME: explain key_maps tricks.
  20  */
  21
  22 struct kbd_data {
  23         struct tty_port *port;
  24         unsigned short **key_maps;
  25         char **func_table;
  26         fn_handler_fn **fn_handler;
  27         struct kbdiacruc *accent_table;
  28         unsigned int accent_table_size;
  29         unsigned int diacr;
  30         unsigned short sysrq;
  31 };
  32
  33 struct kbd_data *kbd_alloc(void);
  34 void kbd_free(struct kbd_data *);
  35 void kbd_ascebc(struct kbd_data *, unsigned char *);
  36
  37 void kbd_keycode(struct kbd_data *, unsigned int);
  38 int kbd_ioctl(struct kbd_data *, unsigned int, unsigned long);
  39
  40 /*
  41  * Helper Functions.
  42  */
  43 static inline void
  44 kbd_put_queue(struct tty_port *port, int ch)
  45 {
  46         struct tty_struct *tty = tty_port_tty_get(port);
  47         if (!tty)
  48                 return;
  49         tty_insert_flip_char(tty, ch, 0);
  50         tty_schedule_flip(tty);
  51         tty_kref_put(tty);
  52 }
  53
  54 static inline void
  55 kbd_puts_queue(struct tty_port *port, char *cp)
  56 {
  57         struct tty_struct *tty = tty_port_tty_get(port);
  58         if (!tty)
  59                 return;
  60         while (*cp)
  61                 tty_insert_flip_char(tty, *cp++, 0);
  62         tty_schedule_flip(tty);
  63         tty_kref_put(tty);
  64 }