1a3ef038d0
These are common files for the driver for the Sony CXD2880 DVB-T2/T tuner + demodulator. These contains helper functions for the driver. Signed-off-by: Yasunari Takiguchi <Yasunari.Takiguchi@sony.com> Signed-off-by: Masayuki Yamamoto <Masayuki.Yamamoto@sony.com> Signed-off-by: Hideki Nozawa <Hideki.Nozawa@sony.com> Signed-off-by: Kota Yonezawa <Kota.Yonezawa@sony.com> Signed-off-by: Toshihiko Matsumoto <Toshihiko.Matsumoto@sony.com> Signed-off-by: Satoshi Watanabe <Satoshi.C.Watanabe@sony.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
22 lines
493 B
C
22 lines
493 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* cxd2880_common.c
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* Sony CXD2880 DVB-T2/T tuner + demodulator driver
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* common functions
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*
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* Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation
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*/
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#include "cxd2880_common.h"
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int cxd2880_convert2s_complement(u32 value, u32 bitlen)
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{
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if (!bitlen || bitlen >= 32)
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return (int)value;
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if (value & (u32)(1 << (bitlen - 1)))
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return (int)(GENMASK(31, bitlen) | value);
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else
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return (int)(GENMASK(bitlen - 1, 0) & value);
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}
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