LXR linux/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
  15struct kbd_data;
  16
  17extern int ebc_funcbufsize, ebc_funcbufleft;
  18extern char *ebc_func_table[MAX_NR_FUNC];
  19extern char ebc_func_buf[];
  20extern char *ebc_funcbufptr;
  21extern unsigned int ebc_keymap_count;
  22
  23extern struct kbdiacruc ebc_accent_table[];
  24extern unsigned int ebc_accent_table_size;
  25extern unsigned short *ebc_key_maps[MAX_NR_KEYMAPS];
  26extern unsigned short ebc_plain_map[NR_KEYS];
  27
  28typedef void (fn_handler_fn)(struct kbd_data *);
  29
  30/*
  31 * FIXME: explain key_maps tricks.
  32 */
  33
  34struct kbd_data {
  35        struct tty_port *port;
  36        unsigned short **key_maps;
  37        char **func_table;
  38        fn_handler_fn **fn_handler;
  39        struct kbdiacruc *accent_table;
  40        unsigned int accent_table_size;
  41        unsigned int diacr;
  42        unsigned short sysrq;
  43};
  44
  45struct kbd_data *kbd_alloc(void);
  46void kbd_free(struct kbd_data *);
  47void kbd_ascebc(struct kbd_data *, unsigned char *);
  48
  49void kbd_keycode(struct kbd_data *, unsigned int);
  50int kbd_ioctl(struct kbd_data *, unsigned int, unsigned long);
  51
  52/*
  53 * Helper Functions.
  54 */
  55static inline void
  56kbd_put_queue(struct tty_port *port, int ch)
  57{
  58        tty_insert_flip_char(port, ch, 0);
  59        tty_schedule_flip(port);
  60}
  61
  62static inline void
  63kbd_puts_queue(struct tty_port *port, char *cp)
  64{
  65        while (*cp)
  66                tty_insert_flip_char(port, *cp++, 0);
  67        tty_schedule_flip(port);
  68}
  69