mirror of https://gitee.com/openkylin/linux.git
67 lines
1.2 KiB
C
67 lines
1.2 KiB
C
// 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;
|
|
}
|