| /* |
| * Character LCD driver for Linux |
| * |
| * Copyright (C) 2000-2008, Willy Tarreau <w@1wt.eu> |
| * Copyright (C) 2016-2017 Glider bvba |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| |
| struct charlcd { |
| const struct charlcd_ops *ops; |
| const unsigned char *char_conv; /* Optional */ |
| |
| int ifwidth; /* 4-bit or 8-bit (default) */ |
| int height; |
| int width; |
| int bwidth; /* Default set by charlcd_alloc() */ |
| int hwidth; /* Default set by charlcd_alloc() */ |
| |
| void *drvdata; /* Set by charlcd_alloc() */ |
| }; |
| |
| struct charlcd_ops { |
| /* Required */ |
| void (*write_cmd)(struct charlcd *lcd, int cmd); |
| void (*write_data)(struct charlcd *lcd, int data); |
| |
| /* Optional */ |
| void (*write_cmd_raw4)(struct charlcd *lcd, int cmd); /* 4-bit only */ |
| void (*clear_fast)(struct charlcd *lcd); |
| void (*backlight)(struct charlcd *lcd, int on); |
| }; |
| |
| struct charlcd *charlcd_alloc(unsigned int drvdata_size); |
| |
| int charlcd_register(struct charlcd *lcd); |
| int charlcd_unregister(struct charlcd *lcd); |
| |
| void charlcd_poke(struct charlcd *lcd); |