/* SPDX-License-Identifier: GPL-2.0-only */ #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; }