Function software_i2c_transfer

src/device/software_i2c.c:233–259

}

int software_i2c_transfer(unsigned int bus, struct i2c_msg *segments, int count)
{
	int i, ret;
	struct i2c_msg *seg;

	for (seg = segments; seg - segments < count; seg++) {
		if ((ret = start_cond(bus)) < 0)
			return ret;
		const u8 addr_dir = seg->slave << 1 | !!(seg->flags & I2C_M_RD);
		if ((ret = out_byte(bus, addr_dir)) < 0)
			return ret;
		for (i = 0; i < seg->len; i++) {
			if (seg->flags & I2C_M_RD) {
				ret = in_byte(bus, i < seg->len - 1);
				seg->buf[i] = (u8)ret;
			} else {
				ret = out_byte(bus, seg->buf[i]);
			}
			if (ret < 0)
				return ret;
		}
	}
	if ((ret = stop_cond(bus)) < 0)
		return ret;

	return 0;
}

void software_i2c_wedge_ack(unsigned int bus, u8 chip)
{