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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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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_io.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_io.c')
-rw-r--r-- | drivers/media/dvb-frontends/cxd2880/cxd2880_io.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/cxd2880/cxd2880_io.c b/drivers/media/dvb-frontends/cxd2880/cxd2880_io.c new file mode 100644 index 000000000..9d932bccf --- /dev/null +++ b/drivers/media/dvb-frontends/cxd2880/cxd2880_io.c @@ -0,0 +1,66 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * cxd2880_io.c + * Sony CXD2880 DVB-T2/T tuner + demodulator driver + * register I/O interface functions + * + * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation + */ + +#include "cxd2880_io.h" + +int cxd2880_io_common_write_one_reg(struct cxd2880_io *io, + enum cxd2880_io_tgt tgt, + u8 sub_address, u8 data) +{ + if (!io) + return -EINVAL; + + return io->write_regs(io, tgt, sub_address, &data, 1); +} + +int cxd2880_io_set_reg_bits(struct cxd2880_io *io, + enum cxd2880_io_tgt tgt, + u8 sub_address, u8 data, u8 mask) +{ + int ret; + + if (!io) + return -EINVAL; + + if (mask == 0x00) + return 0; + + if (mask != 0xff) { + u8 rdata = 0x00; + + ret = io->read_regs(io, tgt, sub_address, &rdata, 1); + if (ret) + return ret; + + data = (data & mask) | (rdata & (mask ^ 0xff)); + } + + return io->write_reg(io, tgt, sub_address, data); +} + +int cxd2880_io_write_multi_regs(struct cxd2880_io *io, + enum cxd2880_io_tgt tgt, + const struct cxd2880_reg_value reg_value[], + u8 size) +{ + int ret; + int i; + + if (!io) + return -EINVAL; + + for (i = 0; i < size ; i++) { + ret = io->write_reg(io, tgt, reg_value[i].addr, + reg_value[i].value); + if (ret) + return ret; + } + + return 0; +} |