Geert Uytterhoeven ac201479cc auxdisplay: charlcd: Add support for 4-bit interfaces
In 4-bit mode, 8-bit commands and data are written using two raw writes
to the data interface: high nibble first, low nibble last.  This must be
handled by the low-level driver.

However, as we don't know in which mode (4-bit or 8-bit) nor 4-bit phase
the LCD was left, initialization must always be handled using raw
writes, and needs to configure the LCD for 8-bit mode first.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-17 15:10:49 +09:00
..
2017-03-03 21:36:56 -08:00
2017-02-23 15:57:04 -08:00
2017-03-03 16:15:48 -08:00
2017-03-09 15:12:27 +01:00
2017-03-10 09:53:00 -08:00
2017-03-04 11:26:18 -08:00
2017-02-23 15:57:04 -08:00
2017-02-21 11:51:42 -08:00
2017-02-22 19:23:14 -08:00
2017-02-23 11:53:22 -08:00
2017-03-01 09:46:02 -08:00
2017-02-20 17:23:57 -08:00
2017-02-23 15:57:04 -08:00
2017-03-02 13:53:13 -08:00
2017-03-11 00:08:39 -08:00
2017-03-09 12:23:30 -08:00
2017-02-23 11:53:22 -08:00