diff options
Diffstat (limited to 'drivers/auxdisplay/hd44780_common.h')
| -rw-r--r-- | drivers/auxdisplay/hd44780_common.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/auxdisplay/hd44780_common.h b/drivers/auxdisplay/hd44780_common.h new file mode 100644 index 000000000..a16aa8c29 --- /dev/null +++ b/drivers/auxdisplay/hd44780_common.h @@ -0,0 +1,33 @@ +/* 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); |