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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;
| }
|
|
