drivers/auxdisplay/hd44780_common.h

0001 /* SPDX-License-Identifier: GPL-2.0-or-later */
0002
0003 #define DEFAULT_LCD_BWIDTH      40
0004 #define DEFAULT_LCD_HWIDTH      64
0005
0006 struct hd44780_common {
0007     int ifwidth;            /* 4-bit or 8-bit (default) */
0008     int bwidth;         /* Default set by hd44780_alloc() */
0009     int hwidth;         /* Default set by hd44780_alloc() */
0010     unsigned long hd44780_common_flags;
0011     void (*write_data)(struct hd44780_common *hdc, int data);
0012     void (*write_cmd)(struct hd44780_common *hdc, int cmd);
0013     /* write_cmd_raw4 is for 4-bit connected displays only */
0014     void (*write_cmd_raw4)(struct hd44780_common *hdc, int cmd);
0015     void *hd44780;
0016 };
0017
0018 int hd44780_common_print(struct charlcd *lcd, int c);
0019 int hd44780_common_gotoxy(struct charlcd *lcd, unsigned int x, unsigned int y);
0020 int hd44780_common_home(struct charlcd *lcd);
0021 int hd44780_common_clear_display(struct charlcd *lcd);
0022 int hd44780_common_init_display(struct charlcd *lcd);
0023 int hd44780_common_shift_cursor(struct charlcd *lcd,
0024         enum charlcd_shift_dir dir);
0025 int hd44780_common_shift_display(struct charlcd *lcd,
0026         enum charlcd_shift_dir dir);
0027 int hd44780_common_display(struct charlcd *lcd, enum charlcd_onoff on);
0028 int hd44780_common_cursor(struct charlcd *lcd, enum charlcd_onoff on);
0029 int hd44780_common_blink(struct charlcd *lcd, enum charlcd_onoff on);
0030 int hd44780_common_fontsize(struct charlcd *lcd, enum charlcd_fontsize size);
0031 int hd44780_common_lines(struct charlcd *lcd, enum charlcd_lines lines);
0032 int hd44780_common_redefine_char(struct charlcd *lcd, char *esc);
0033 struct hd44780_common *hd44780_common_alloc(void);