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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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