projects / mirror_ubuntu-hirsute-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 39f8ea46 GU |
2 | /* |
| 3 | * Character LCD driver for Linux | |
| 4 | * | |
| 5 | * Copyright (C) 2000-2008, Willy Tarreau <w@1wt.eu> | |
| 6 | * Copyright (C) 2016-2017 Glider bvba | |
| 39f8ea46 GU |
7 | */ |
| 8 | ||
| 390235c3 MY |
9 | #ifndef _CHARLCD_H |
| 10 | #define _CHARLCD_H | |
| 11 | ||
| 39f8ea46 GU |
12 | struct charlcd { |
| 13 | const struct charlcd_ops *ops; | |
| 14 | const unsigned char *char_conv; /* Optional */ | |
| 15 | ||
| ac201479 | 16 | int ifwidth; /* 4-bit or 8-bit (default) */ |
| 39f8ea46 GU |
17 | int height; |
| 18 | int width; | |
| 19 | int bwidth; /* Default set by charlcd_alloc() */ | |
| 20 | int hwidth; /* Default set by charlcd_alloc() */ | |
| 21 | ||
| 22 | void *drvdata; /* Set by charlcd_alloc() */ | |
| 23 | }; | |
| 24 | ||
| 25 | struct charlcd_ops { | |
| 26 | /* Required */ | |
| 27 | void (*write_cmd)(struct charlcd *lcd, int cmd); | |
| 28 | void (*write_data)(struct charlcd *lcd, int data); | |
| 29 | ||
| 30 | /* Optional */ | |
| ac201479 | 31 | void (*write_cmd_raw4)(struct charlcd *lcd, int cmd); /* 4-bit only */ |
| 39f8ea46 GU |
32 | void (*clear_fast)(struct charlcd *lcd); |
| 33 | void (*backlight)(struct charlcd *lcd, int on); | |
| 34 | }; | |
| 35 | ||
| 36 | struct charlcd *charlcd_alloc(unsigned int drvdata_size); | |
| 8e44fc85 | 37 | void charlcd_free(struct charlcd *lcd); |
| 39f8ea46 GU |
38 | |
| 39 | int charlcd_register(struct charlcd *lcd); | |
| 40 | int charlcd_unregister(struct charlcd *lcd); | |
| 41 | ||
| 42 | void charlcd_poke(struct charlcd *lcd); | |
| 390235c3 MY |
43 | |
| 44 | #endif /* CHARLCD_H */ |