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