linux/drivers/auxdisplay/hd44780_common.h
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   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