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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <device/i2c_simple.h>
#include <stdint.h>
int i2c_read_field(unsigned int bus, uint8_t chip, uint8_t reg, uint8_t *data,
uint8_t mask, uint8_t shift)
{
int ret;
uint8_t buf = 0;
ret = i2c_readb(bus, chip, reg, &buf);
buf &= (mask << shift);
*data = (buf >> shift);
return ret;
}
int i2c_write_field(unsigned int bus, uint8_t chip, uint8_t reg, uint8_t data,
uint8_t mask, uint8_t shift)
{
int ret;
uint8_t buf = 0;
ret = i2c_readb(bus, chip, reg, &buf);
buf &= ~(mask << shift);
buf |= (data << shift);
ret |= i2c_writeb(bus, chip, reg, buf);
return ret;
}
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