blob: 23f61850f3639ae1686f9f83e0bac6e6a5015ba5 [file] [log] [blame]
* Character LCD driver for Linux
* Copyright (C) 2000-2008, Willy Tarreau <>
* Copyright (C) 2016-2017 Glider bvba
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
struct charlcd {
const struct charlcd_ops *ops;
const unsigned char *char_conv; /* Optional */
int ifwidth; /* 4-bit or 8-bit (default) */
int height;
int width;
int bwidth; /* Default set by charlcd_alloc() */
int hwidth; /* Default set by charlcd_alloc() */
void *drvdata; /* Set by charlcd_alloc() */
struct charlcd_ops {
/* Required */
void (*write_cmd)(struct charlcd *lcd, int cmd);
void (*write_data)(struct charlcd *lcd, int data);
/* Optional */
void (*write_cmd_raw4)(struct charlcd *lcd, int cmd); /* 4-bit only */
void (*clear_fast)(struct charlcd *lcd);
void (*backlight)(struct charlcd *lcd, int on);
struct charlcd *charlcd_alloc(unsigned int drvdata_size);
int charlcd_register(struct charlcd *lcd);
int charlcd_unregister(struct charlcd *lcd);
void charlcd_poke(struct charlcd *lcd);