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/*
* Copyright (C) 2010 ST-Ericsson SA
*
* Author: Rabin Vincent <rabin.vincent@stericsson.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* 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
*/
#include <common.h>
#include <i2c.h>
#include <tc35892.h>
#define GPIODATA0 0xC0
#define GPIODATA1 0xC2
#define GPIODATA2 0xC4
#define GPIODIR0 0xC6
#define GPIODIR1 0xC7
#define GPIODIR2 0xC8
int tc35892_gpio_dir(int addr, int pin, int dir)
{
uchar reg = GPIODIR0 + pin / 8;
uchar pos = pin % 8;
uchar data;
int ret;
ret = i2c_read(addr, reg, sizeof(reg), &data, sizeof(data));
if (ret)
return ret;
if (dir)
data |= (1 << pos);
else
data &= ~(1 << pos);
return i2c_write(addr, reg, sizeof(reg), &data, sizeof(data));
}
int tc35892_gpio_get(int addr, int pin, int val)
{
uchar reg = GPIODATA0 + (pin / 8) * 2;
uchar pos = pin % 8;
uchar data;
int ret;
ret = i2c_read(addr, reg, sizeof(reg), &data, sizeof(data));
if (ret < 0)
return ret;
return !!(data & (1 << pos));
}
int tc35892_gpio_set(int addr, int pin, int val)
{
uchar reg = GPIODATA0 + (pin / 8) * 2;
uchar pos = pin % 8;
uchar data[] = {val << pos, 1 << pos};
return i2c_write(addr, reg, sizeof(reg), data, sizeof(data));
}
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