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1// SPDX-License-Identifier: GPL-2.02/*3 * cxd2880_common.c4 * Sony CXD2880 DVB-T2/T tuner + demodulator driver5 * common functions6 *7 * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation8 */9 10#include "cxd2880_common.h"11 12int cxd2880_convert2s_complement(u32 value, u32 bitlen)13{14 if (!bitlen || bitlen >= 32)15 return (int)value;16 17 if (value & (u32)(1 << (bitlen - 1)))18 return (int)(GENMASK(31, bitlen) | value);19 else20 return (int)(GENMASK(bitlen - 1, 0) & value);21}22