67 lines · c
1// SPDX-License-Identifier: GPL-2.02/*3 * cxd2880_io.c4 * Sony CXD2880 DVB-T2/T tuner + demodulator driver5 * register I/O interface functions6 *7 * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation8 */9 10#include "cxd2880_io.h"11 12int cxd2880_io_common_write_one_reg(struct cxd2880_io *io,13 enum cxd2880_io_tgt tgt,14 u8 sub_address, u8 data)15{16 if (!io)17 return -EINVAL;18 19 return io->write_regs(io, tgt, sub_address, &data, 1);20}21 22int cxd2880_io_set_reg_bits(struct cxd2880_io *io,23 enum cxd2880_io_tgt tgt,24 u8 sub_address, u8 data, u8 mask)25{26 int ret;27 28 if (!io)29 return -EINVAL;30 31 if (mask == 0x00)32 return 0;33 34 if (mask != 0xff) {35 u8 rdata = 0x00;36 37 ret = io->read_regs(io, tgt, sub_address, &rdata, 1);38 if (ret)39 return ret;40 41 data = (data & mask) | (rdata & (mask ^ 0xff));42 }43 44 return io->write_reg(io, tgt, sub_address, data);45}46 47int cxd2880_io_write_multi_regs(struct cxd2880_io *io,48 enum cxd2880_io_tgt tgt,49 const struct cxd2880_reg_value reg_value[],50 u8 size)51{52 int ret;53 int i;54 55 if (!io)56 return -EINVAL;57 58 for (i = 0; i < size ; i++) {59 ret = io->write_reg(io, tgt, reg_value[i].addr,60 reg_value[i].value);61 if (ret)62 return ret;63 }64 65 return 0;66}67