auxdisplay: provide hd44780_common_gotoxy

Provide a hd44780_common_gotoxy function and a pointer in the ops for
charlcd to use to move the cursor.

Reviewed-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/auxdisplay/charlcd.h b/drivers/auxdisplay/charlcd.h
index 94922e3c1c4c..f36cc80ce385 100644
--- a/drivers/auxdisplay/charlcd.h
+++ b/drivers/auxdisplay/charlcd.h
@@ -37,14 +37,16 @@ struct charlcd {
  * 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.
+ * @gotoxy: Set cursor to x, y. The x and y values to set the cursor to are
+ * previously set in addr.x and addr.y by charlcd.
  */
 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);
+	int (*gotoxy)(struct charlcd *lcd);
 };
 
 struct charlcd *charlcd_alloc(void);