[lcd4linux] Keypad support?

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Hi,

i have a question about lcd4linux and its keypad support.

Originally i use a LCD2USB (no pushbuttons connected) and a keypad
matrix connected to parport0 together with LCDproc/LCDd.

The keypad is connected as following:

        +5V ----------+--------+--------+--------+
                      |        |        |        |
                     22k      22k      22k      22k
                      |        |        |        |
 /STRB (1)  -|<---+--------+--------+--------+   |
                  |   |    |   |    |   |    |   |
                  o   |    o   |    o   |    o   |
                S1 \  |  S2 \  |  S3 \  |  S4 \  |
                  o   |    o   |    o   |    o   |
                  |   |    |   |    |   |    |   |
                  +---+    +---+    +---+    +---+
                      |        |        |        |
 /LF (14)   -|<---+-----------------+--------+   |
                  |   |        |    |   |    |   |
                  o   |        |    o   |    o   |
                S5 \  |        |  S6 \  |  S7 \  |
                  o   |        |    o   |    o   |
                  |   |        |    |   |    |   |
                  +---+        |    +---+    +---+
                      |        |        |        |
 /ACK (10)  ----------+        |        |        |
 BUSY (11)  -------------------+        |        |
 PE (12)    ----------------------------+        |
 SELIN (13) -------------------------------------+

Is it possible to use the LCD2USB together with the keypad with
lcd4linux? If there is no direct keypad support, can i use the
GPIO support of lcd4linux to make the keypad usable?

Thanks in advance.

Regards, Thorsten