mirror of
https://github.com/u-boot/u-boot.git
synced 2024-11-24 12:44:23 +08:00
e92739d34e
Initial support for NXP's 4 and 8 bit I2C gpio expanders (eg pca9537, pca9557, etc). The CONFIG_PCA953X define enables support for the devices while the CONFIG_CMD_PCA953X define enables the pca953x command. The CONFIG_CMD_PCA953X_INFO define enables an 'info' sub-command which provides summary information for the given pca953x device. Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
/*
|
|
* Copyright 2008 Extreme Engineering Solutions, Inc.
|
|
*
|
|
* This program 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
|
|
*/
|
|
|
|
#ifndef __PCA953X_H_
|
|
#define __PCA953X_H_
|
|
|
|
#define PCA953X_IN 0x00
|
|
#define PCA953X_OUT 0x01
|
|
#define PCA953X_POL 0x02
|
|
#define PCA953X_CONF 0x03
|
|
|
|
#define PCA953X_OUT_LOW 0
|
|
#define PCA953X_OUT_HIGH 1
|
|
#define PCA953X_POL_NORMAL 0
|
|
#define PCA953X_POL_INVERT 1
|
|
#define PCA953X_DIR_OUT 0
|
|
#define PCA953X_DIR_IN 1
|
|
|
|
int pca953x_set_val(u8 chip, uint mask, uint data);
|
|
int pca953x_set_pol(u8 chip, uint mask, uint data);
|
|
int pca953x_set_dir(u8 chip, uint mask, uint data);
|
|
int pca953x_get_val(u8 chip);
|
|
|
|
#endif /* __PCA953X_H_ */
|