----- Forwarded message from "Greeen-III" <email@example.com> -----
From: "Greeen-III" <firstname.lastname@example.org>
Date: Mon, 12 Mar 2001 09:17:24 +0100 (MET)
To: "LinuxEmbeddedMailList" <email@example.com>,
Subject: Keypad driver!!
Hi all experts,
I am trying to implement a keypad driver on Linux/MIPS.
Could Any one explain the keypad work?
I traced the /drivers/char/keyboard.c.
It seemed to create a timer interrupt.
The timer toggle the handle to check the status of the keyboard.
But!! How could we know the keypad is pressed?
The driver didn't need to call request_irq()??
----- End forwarded message -----