# STMPE IO-Port Expander guide

Rabin
Vincent

          rabin.vincent@stericsson.com

2010
ST-Ericsson
Linux standard functions

This documentation is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

For more details see the file COPYING in the source distribution of Linux.

## Introduction

This documentation describes the driver for STMicroelectronics STMPExxxx port expander devices.

## Known Bugs And Assumptions

None.

  None.

## Public Functions Provided

List of public interfaces in stmpe driver

!Edrivers/mfd/stmpe.c

## Private Functions

STMPE Keypad driver STMPE GPIO driver

### stmpe-keypad.c

!Idrivers/input/keyboard/stmpe-keypad.c

## Other Data Structures

This Section lists some of the Data structure used by the stmpe driver and client drivers.

!Iinclude/linux/mfd/stmpe.h !Idrivers/mfd/stmpe.h