1a3ef038d0
These are common files for the driver for the Sony CXD2880 DVB-T2/T tuner + demodulator. These contains helper functions for the driver. Signed-off-by: Yasunari Takiguchi <Yasunari.Takiguchi@sony.com> Signed-off-by: Masayuki Yamamoto <Masayuki.Yamamoto@sony.com> Signed-off-by: Hideki Nozawa <Hideki.Nozawa@sony.com> Signed-off-by: Kota Yonezawa <Kota.Yonezawa@sony.com> Signed-off-by: Toshihiko Matsumoto <Toshihiko.Matsumoto@sony.com> Signed-off-by: Satoshi Watanabe <Satoshi.C.Watanabe@sony.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
67 lines
1.2 KiB
C
67 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* cxd2880_io.c
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* Sony CXD2880 DVB-T2/T tuner + demodulator driver
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* register I/O interface functions
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*
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* Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation
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*/
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#include "cxd2880_io.h"
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int cxd2880_io_common_write_one_reg(struct cxd2880_io *io,
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enum cxd2880_io_tgt tgt,
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u8 sub_address, u8 data)
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{
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if (!io)
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return -EINVAL;
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return io->write_regs(io, tgt, sub_address, &data, 1);
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}
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int cxd2880_io_set_reg_bits(struct cxd2880_io *io,
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enum cxd2880_io_tgt tgt,
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u8 sub_address, u8 data, u8 mask)
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{
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int ret;
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if (!io)
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return -EINVAL;
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if (mask == 0x00)
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return 0;
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if (mask != 0xff) {
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u8 rdata = 0x00;
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ret = io->read_regs(io, tgt, sub_address, &rdata, 1);
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if (ret)
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return ret;
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data = (data & mask) | (rdata & (mask ^ 0xff));
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}
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return io->write_reg(io, tgt, sub_address, data);
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}
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int cxd2880_io_write_multi_regs(struct cxd2880_io *io,
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enum cxd2880_io_tgt tgt,
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const struct cxd2880_reg_value reg_value[],
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u8 size)
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{
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int ret;
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int i;
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if (!io)
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return -EINVAL;
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for (i = 0; i < size ; i++) {
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ret = io->write_reg(io, tgt, reg_value[i].addr,
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reg_value[i].value);
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if (ret)
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return ret;
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}
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return 0;
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}
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