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// 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;
}
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