1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * cxd2880_io.c
4*4882a593Smuzhiyun * Sony CXD2880 DVB-T2/T tuner + demodulator driver
5*4882a593Smuzhiyun * register I/O interface functions
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include "cxd2880_io.h"
11*4882a593Smuzhiyun
cxd2880_io_common_write_one_reg(struct cxd2880_io * io,enum cxd2880_io_tgt tgt,u8 sub_address,u8 data)12*4882a593Smuzhiyun int cxd2880_io_common_write_one_reg(struct cxd2880_io *io,
13*4882a593Smuzhiyun enum cxd2880_io_tgt tgt,
14*4882a593Smuzhiyun u8 sub_address, u8 data)
15*4882a593Smuzhiyun {
16*4882a593Smuzhiyun if (!io)
17*4882a593Smuzhiyun return -EINVAL;
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun return io->write_regs(io, tgt, sub_address, &data, 1);
20*4882a593Smuzhiyun }
21*4882a593Smuzhiyun
cxd2880_io_set_reg_bits(struct cxd2880_io * io,enum cxd2880_io_tgt tgt,u8 sub_address,u8 data,u8 mask)22*4882a593Smuzhiyun int cxd2880_io_set_reg_bits(struct cxd2880_io *io,
23*4882a593Smuzhiyun enum cxd2880_io_tgt tgt,
24*4882a593Smuzhiyun u8 sub_address, u8 data, u8 mask)
25*4882a593Smuzhiyun {
26*4882a593Smuzhiyun int ret;
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun if (!io)
29*4882a593Smuzhiyun return -EINVAL;
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun if (mask == 0x00)
32*4882a593Smuzhiyun return 0;
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun if (mask != 0xff) {
35*4882a593Smuzhiyun u8 rdata = 0x00;
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun ret = io->read_regs(io, tgt, sub_address, &rdata, 1);
38*4882a593Smuzhiyun if (ret)
39*4882a593Smuzhiyun return ret;
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun data = (data & mask) | (rdata & (mask ^ 0xff));
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun return io->write_reg(io, tgt, sub_address, data);
45*4882a593Smuzhiyun }
46*4882a593Smuzhiyun
cxd2880_io_write_multi_regs(struct cxd2880_io * io,enum cxd2880_io_tgt tgt,const struct cxd2880_reg_value reg_value[],u8 size)47*4882a593Smuzhiyun int cxd2880_io_write_multi_regs(struct cxd2880_io *io,
48*4882a593Smuzhiyun enum cxd2880_io_tgt tgt,
49*4882a593Smuzhiyun const struct cxd2880_reg_value reg_value[],
50*4882a593Smuzhiyun u8 size)
51*4882a593Smuzhiyun {
52*4882a593Smuzhiyun int ret;
53*4882a593Smuzhiyun int i;
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun if (!io)
56*4882a593Smuzhiyun return -EINVAL;
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun for (i = 0; i < size ; i++) {
59*4882a593Smuzhiyun ret = io->write_reg(io, tgt, reg_value[i].addr,
60*4882a593Smuzhiyun reg_value[i].value);
61*4882a593Smuzhiyun if (ret)
62*4882a593Smuzhiyun return ret;
63*4882a593Smuzhiyun }
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun return 0;
66*4882a593Smuzhiyun }
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