drivers/s390/char/keyboard.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  *    ebcdic keycode functions for s390 console drivers
   4  *
   5  *    Copyright IBM Corp. 2003
   6  *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
   7  */
   8
   9 #include <linux/tty.h>
  10 #include <linux/tty_flip.h>
  11 #include <linux/keyboard.h>
  12
  13 #define NR_FN_HANDLER   20
  14
  15 struct kbd_data;
  16
  17 typedef void (fn_handler_fn)(struct kbd_data *);
  18
  19 /*
  20  * FIXME: explain key_maps tricks.
  21  */
  22
  23 struct kbd_data {
  24         struct tty_port *port;
  25         unsigned short **key_maps;
  26         char **func_table;
  27         fn_handler_fn **fn_handler;
  28         struct kbdiacruc *accent_table;
  29         unsigned int accent_table_size;
  30         unsigned int diacr;
  31         unsigned short sysrq;
  32 };
  33
  34 struct kbd_data *kbd_alloc(void);
  35 void kbd_free(struct kbd_data *);
  36 void kbd_ascebc(struct kbd_data *, unsigned char *);
  37
  38 void kbd_keycode(struct kbd_data *, unsigned int);
  39 int kbd_ioctl(struct kbd_data *, unsigned int, unsigned long);
  40
  41 /*
  42  * Helper Functions.
  43  */
  44 static inline void
  45 kbd_put_queue(struct tty_port *port, int ch)
  46 {
  47         tty_insert_flip_char(port, ch, 0);
  48         tty_schedule_flip(port);
  49 }
  50
  51 static inline void
  52 kbd_puts_queue(struct tty_port *port, char *cp)
  53 {
  54         while (*cp)
  55                 tty_insert_flip_char(port, *cp++, 0);
  56         tty_schedule_flip(port);
  57 }