/* SPDX-License-Identifier: GPL-2.0-or-later */ #define DEFAULT_LCD_BWIDTH 40 #define DEFAULT_LCD_HWIDTH 64 struct hd44780_common { int ifwidth; /* 4-bit or 8-bit (default) */ int bwidth; /* Default set by hd44780_alloc() */ int hwidth; /* Default set by hd44780_alloc() */ unsigned long hd44780_common_flags; void (*write_data)(struct hd44780_common *hdc, int data); void (*write_cmd)(struct hd44780_common *hdc, int cmd); /* write_cmd_raw4 is for 4-bit connected displays only */ void (*write_cmd_raw4)(struct hd44780_common *hdc, int cmd); void *hd44780; }; int hd44780_common_print(struct charlcd *lcd, int c); int hd44780_common_gotoxy(struct charlcd *lcd, unsigned int x, unsigned int y); int hd44780_common_home(struct charlcd *lcd); int hd44780_common_clear_display(struct charlcd *lcd); int hd44780_common_init_display(struct charlcd *lcd); int hd44780_common_shift_cursor(struct charlcd *lcd, enum charlcd_shift_dir dir); int hd44780_common_shift_display(struct charlcd *lcd, enum charlcd_shift_dir dir); int hd44780_common_display(struct charlcd *lcd, enum charlcd_onoff on); int hd44780_common_cursor(struct charlcd *lcd, enum charlcd_onoff on); int hd44780_common_blink(struct charlcd *lcd, enum charlcd_onoff on); int hd44780_common_fontsize(struct charlcd *lcd, enum charlcd_fontsize size); int hd44780_common_lines(struct charlcd *lcd, enum charlcd_lines lines); int hd44780_common_redefine_char(struct charlcd *lcd, char *esc); struct hd44780_common *hd44780_common_alloc(void);