diff options
Diffstat (limited to 'drivers/auxdisplay/charlcd.h')
| -rw-r--r-- | drivers/auxdisplay/charlcd.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/auxdisplay/charlcd.h b/drivers/auxdisplay/charlcd.h index ff4896af2189..94922e3c1c4c 100644 --- a/drivers/auxdisplay/charlcd.h +++ b/drivers/auxdisplay/charlcd.h @@ -30,9 +30,21 @@ struct charlcd { void *drvdata; }; +/** + * struct charlcd_ops - Functions used by charlcd. Drivers have to implement + * these. + * @clear_fast: Clear the whole display and set cursor to position 0, 0. + * Optional. + * @backlight: Turn backlight on or off. Optional. + * @print: Print one character to the display at current cursor position. + * The cursor is advanced by charlcd. + * The buffered cursor position is advanced by charlcd. The cursor should not + * wrap to the next line at the end of a line. + */ struct charlcd_ops { void (*clear_fast)(struct charlcd *lcd); void (*backlight)(struct charlcd *lcd, enum charlcd_onoff on); + int (*print)(struct charlcd *lcd, int c); }; struct charlcd *charlcd_alloc(void); |