// 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; } |