1/* SPDX-License-Identifier: GPL-2.0-or-later */
2
3#define DEFAULT_LCD_BWIDTH      40
4#define DEFAULT_LCD_HWIDTH      64
5
6struct 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);
15	void *hd44780;
16};
17
18int hd44780_common_print(struct charlcd *lcd, int c);
19int hd44780_common_gotoxy(struct charlcd *lcd, unsigned int x, unsigned int y);
20int hd44780_common_home(struct charlcd *lcd);
21int hd44780_common_clear_display(struct charlcd *lcd);
22int hd44780_common_init_display(struct charlcd *lcd);
23int hd44780_common_shift_cursor(struct charlcd *lcd,
24		enum charlcd_shift_dir dir);
25int hd44780_common_shift_display(struct charlcd *lcd,
26		enum charlcd_shift_dir dir);
27int hd44780_common_display(struct charlcd *lcd, enum charlcd_onoff on);
28int hd44780_common_cursor(struct charlcd *lcd, enum charlcd_onoff on);
29int hd44780_common_blink(struct charlcd *lcd, enum charlcd_onoff on);
30int hd44780_common_fontsize(struct charlcd *lcd, enum charlcd_fontsize size);
31int hd44780_common_lines(struct charlcd *lcd, enum charlcd_lines lines);
32int hd44780_common_redefine_char(struct charlcd *lcd, char *esc);
33struct hd44780_common *hd44780_common_alloc(void);
34