diff options
Diffstat (limited to 'include/misc/charlcd.h')
| -rw-r--r-- | include/misc/charlcd.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/include/misc/charlcd.h b/include/misc/charlcd.h new file mode 100644 index 000000000000..23f61850f363 --- /dev/null +++ b/include/misc/charlcd.h @@ -0,0 +1,42 @@ +/* + * 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); |