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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
| commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
| tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/media/dvb-frontends/cxd2880/cxd2880_common.c | |
| parent | Initial commit. (diff) | |
| download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip | |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/media/dvb-frontends/cxd2880/cxd2880_common.c')
| -rw-r--r-- | drivers/media/dvb-frontends/cxd2880/cxd2880_common.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/cxd2880/cxd2880_common.c b/drivers/media/dvb-frontends/cxd2880/cxd2880_common.c new file mode 100644 index 000000000..d6f5af660 --- /dev/null +++ b/drivers/media/dvb-frontends/cxd2880/cxd2880_common.c @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * cxd2880_common.c + * Sony CXD2880 DVB-T2/T tuner + demodulator driver + * common functions + * + * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation + */ + +#include "cxd2880_common.h" + +int cxd2880_convert2s_complement(u32 value, u32 bitlen) +{ + if (!bitlen || bitlen >= 32) + return (int)value; + + if (value & (u32)(1 << (bitlen - 1))) + return (int)(GENMASK(31, bitlen) | value); + else + return (int)(GENMASK(bitlen - 1, 0) & value); +} |