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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Character LCD driver for Linux
*
* Copyright (C) 2000-2008, Willy Tarreau <w@1wt.eu>
* Copyright (C) 2016-2017 Glider bvba
*/
#ifndef _CHARLCD_H
#define _CHARLCD_H
enum charlcd_onoff {
CHARLCD_OFF = 0,
CHARLCD_ON,
};
struct charlcd {
const struct charlcd_ops *ops;
const unsigned char *char_conv; /* Optional */
int height;
int width;
void *drvdata;
};
struct charlcd_ops {
/* Required */
void (*write_cmd)(struct charlcd *lcd, int cmd);
/* Optional */
void (*write_cmd_raw4)(struct charlcd *lcd, int cmd); /* 4-bit only */
void (*clear_fast)(struct charlcd *lcd);
void (*backlight)(struct charlcd *lcd, enum charlcd_onoff on);
};
struct charlcd *charlcd_alloc(void);
void charlcd_free(struct charlcd *lcd);
int charlcd_register(struct charlcd *lcd);
int charlcd_unregister(struct charlcd *lcd);
void charlcd_poke(struct charlcd *lcd);
#endif /* CHARLCD_H */
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