1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 #define DEFAULT_LCD_BWIDTH 40
4 #define DEFAULT_LCD_HWIDTH 64
6 struct hd44780_common
{
7 int ifwidth
; /* 4-bit or 8-bit (default) */
8 int bwidth
; /* Default set by hd44780_alloc() */
9 int hwidth
; /* Default set by hd44780_alloc() */
10 unsigned long hd44780_common_flags
;
11 void (*write_data
)(struct hd44780_common
*hdc
, int data
);
12 void (*write_cmd
)(struct hd44780_common
*hdc
, int cmd
);
13 /* write_cmd_raw4 is for 4-bit connected displays only */
14 void (*write_cmd_raw4
)(struct hd44780_common
*hdc
, int cmd
);
18 int hd44780_common_print(struct charlcd
*lcd
, int c
);
19 int hd44780_common_gotoxy(struct charlcd
*lcd
, unsigned int x
, unsigned int y
);
20 int hd44780_common_home(struct charlcd
*lcd
);
21 int hd44780_common_clear_display(struct charlcd
*lcd
);
22 int hd44780_common_init_display(struct charlcd
*lcd
);
23 int hd44780_common_shift_cursor(struct charlcd
*lcd
,
24 enum charlcd_shift_dir dir
);
25 int hd44780_common_shift_display(struct charlcd
*lcd
,
26 enum charlcd_shift_dir dir
);
27 int hd44780_common_display(struct charlcd
*lcd
, enum charlcd_onoff on
);
28 int hd44780_common_cursor(struct charlcd
*lcd
, enum charlcd_onoff on
);
29 int hd44780_common_blink(struct charlcd
*lcd
, enum charlcd_onoff on
);
30 int hd44780_common_fontsize(struct charlcd
*lcd
, enum charlcd_fontsize size
);
31 int hd44780_common_lines(struct charlcd
*lcd
, enum charlcd_lines lines
);
32 int hd44780_common_redefine_char(struct charlcd
*lcd
, char *esc
);
33 struct hd44780_common
*hd44780_common_alloc(void);
