drivers/auxdisplay/hd44780_common.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 #define DEFAULT_LCD_BWIDTH      40
   4 #define DEFAULT_LCD_HWIDTH      64
   5
   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);
  15         void *hd44780;
  16 };
  17
  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);